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User Manual - Ungerboeck Software

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1. SpcFuncDefaults v Bldg Name Primary School Name ConsPhase NewConstruction lt ConsPhase gt Status New Status FuncClassMthd AreaCategoryMethod FuncClassMthd CompleteBldgFunc Office Building CompleteBldgFunc CompleteBldgOccClass NonResidential CompleteBldgc lt CBCOccGrp gt GroupEducational CBCOcCGrp RelocPubSchool8l dg lt RelocPubSchoolBldg gt NAng e lt NANE gt TotStoryCnt 1 TotStoryCnt AbovecrdStoryCnt 1 Abovecr dStoryCnt TotFlrArea 24412 6 TotFlrArea TotCondFlrArea 24412 6 TotCondFlraArea TotCondvol 360421 TotCondvol NonResFlrArea 24412 6 lt NonResFlrArea gt ResFlrArea e ResFlrArea lt LivingunitCnt gt e LivingunitCnt NRad 8 NRad lt UvectorNi gt 8 UvectorNi UVectorNj 1 UVectorNj ResAreaRatio 8e ResAreaRatio NonResAreaRatio 1 NonResAreaRatio ExtWallarea 13950 1 Extwallarea lt WestExtwallArea gt 2228 14 lt westExtwallArea gt lt ExtwinArea gt 4963 39 ExtWinarea WestExtwinarea 180 667 lt westExtwinArea gt DisplayPerim 8e DisplayPerim westDisplayPerim 8e lt westDisplayPerim gt CondWWR 0 355796 CondWwWR westCondwWWR 0 0810845 WestCondWwWR lt PrelimwinScaleFactor gt 1 PrelimwinScaleractor WestwinSscaleFactor 1 WestwinScaleFactor
2. 74 CBECC COM User Manual 2013 Version 1f e Status Defines if equipment is new existing or modified e Inlet FluidSeg The boiler inlet connection to hot water return or HWR e Outlet FluidSeg The boiler outlet connection to hot water supply or HWS e UnldRatMin The minimum load on the boiler at which the boiler can operate without cycling expressed as a fraction of the full load capacity At loads less than this the boiler cycles at the minimum capacity as needed to meet the load e HIR fPLRCrvRef The name of the performance curve which modifies the boiler efficiency heat input ratio for the time step as a function of the part load ratio e HasBypass checkbox Whether or not the Boiler has Bypass 75 CBECC COM User Manual 2013 Version 1f Heat Rejection Device Data Screen Heat Rejection Device Data Currently Active Ht Rejection Device ES RIS MN Name Cooling Towert4 Status New ME Type lOpenTower Rated Capacity 5 026 633 Btu h Inlet FluidSeg Name CW Return FluidSegment Number of Cells po Outlet FluidSeg Name CW Supply FluidSegment Tower Air Flow 84396 cfm Fan Type Axial v Total Fan HP 20 3 hp Condenser water flow rate 854 gpm Modulation Control VariableSpeedDrive Low Speed Air Flow Ratio 0 50 Minimum Speed Ratio 0 30 OK Input Summary e Currently Active Ht Rejection Device The name of the currently selected heat rejection device e
3. E BasementCoilCooling ChilledWater MW Cooling Coil Data E BasementCoilHeating HotVater Basement CAVFan Centrifugal ing Coi penes amp Basement Relief AirSeqment iit CoilHeating BasementReheat HotWater Terminal Unit Data m UT Basement OAControl i i Bottom VAV VAV Mid VAV VAV didis za Hi VAV VAV TEN Top VAV VAV jew iy Perimeter mid ZN 4 Thermal Zone Conditioned ia Perimeter hi ZN 1 Thermal Zone Conditioned 2 sna ig Perimeter_mid_ZN_1 Thermal Zone Conditioned Envelope Mechanical Ta Project 040012 Offl rg CECStd Eb I SHWFluidSys1 ServiceHotWater TT fe ChW Loop Chilled Water f HotWater Loop HotWater Ir CondenserWater Loop CondenserVVater EI Ej Large Office 13 stories 498 589 cond ft CHIVEE INGORE Part Load Curve Data Em CurveQuadratics f BIrHWBIrFIRRatio f Ratio Linear up t WtHtrStorFIRRatio f Ratio suada Eee fy CurveCubics l on HtRejVSDFanPwrRatio fQRatio SSMO 8 VSDSprFanPwrRatio fCFMRatio Double Quadratic 2 ssn VSDFanPwrRatio_fCFMRatio 8 PumpVSDPwrRatio fGPMRatio Ep CurveDoubleQuadratics ions amp BIrCondHWBIrFIRRatio fORatioTewtSl 67 CBECC COM User Manual 2013 Version 1f Mechanical Input Screen Details Project Data Screen Note that the Project Data input screen is identical to that described above in the Envelope Input Screen Details Users may edit Projec
4. Gaeeiirescisieesesc J Building Data Ei Primary School 1 story 24 413 cond ft2 a TOM Cafeteria Spc DirectlyConditioned Been Lobby Spc DirectlyConditioned Main Corridor Spc DirectlyConditioned su Ig Mech Elec Spe DirectlyConditioned oss n Office Spc DirectlyConditioned Biene Restroom Spc DirectlyConditioned gf Wing Corridor Spc DirectlyConditioned 1 Wing1 Sidet Class Spc DirectlyConditioned TM Wing1_Side1_Class2_ Spe DirectlyConditioned ON Wingi Side1 Class3 Spc DirectlyConditioned Tw Wingi Side Class4 Spc DirectlyConditioned iis Wing1 Side2 Class Spc DirectlyConditioned yosun Wing1_Side2_Class2_Spc DirectlyConditioned D Wingi Side2 Class3 Spc DirectlyConditioned Wing1 Side Class4 Spe DirectlyConditioned Space Data 1 i Wing Corridor Spe DirectlyConditioned E diee Wing2 Side1 Class1 Spc DirectlyConditioned B OS Surface 105 S facing 484 ft2 HB OS Subsurface 13 Base AllCZ FixedWindowU36 NT tai bs ES PolyLoop 126 pd OS Surface 106 Surface Data Interior Wall X PI So sex t3 ee 4 PolyLoop 128 BM OS Surface 108 X Surface Data Roof j m PolyLoop 129 m Os Surface 102 WELL P oo PolyLoop 125 ood PolyLoop 124 gop Wing2 Side1 Class2 Spc DirectlyConditioned zs Wing2 Sidet Class3 Spc DirectlyConditioned 2 5S Wing2_Side1_Class4_Spe Direc
5. Classroom Defaults Corridor Lobby Defaults P Restroom Defaults Cafeteria Defaults m Elec Mech Room Defaults Luminaires Severe Z Recessed 4 x 4 Lamp T 8 Chalkboard Track Luminaire ae 4 Stage Lighting For Help press F1 21 CBECC COM User Manual 2013 Version 1f Envelope Input Screen Details The Envelope Input Screen contains four tabs Project Data Design Team Exceptional Conditions and Non Compliance Analysis See each screen and its input information below Project Data Screen Project Data Tab To access this screen in the Envelope tab double click on the Project name Building Model Data E Project Data Design Team Exceptional Conditions Non Compliance Analysis Project Name Analysis Type Run Title Owner Info Organization Contact Name Email Location St Address City Zip Code Climate Zone 010012 SchSml CECStd Generate Reports PDF Full XML Title24Compliance v specify specify Title specify specify Phone specify specify Latitude 38 58 deg arc specify State CA Longitude 121 49 deg arc 95814 Elevation 940 0 ft ClimateZone12 Y Weather Station ISACRAMENTO EXECUTIVE 724830 Y File Management Creation 20 48 Fri Dec 06 2013 Last Mod 15 21 Wed Feb 05 2014 Last Run 15 21 Wed Feb 05 2014 Input summary for the Project Data screen Project Name Na
6. Non Compliance Analysis Architect Info Organization specify Name specify Title specify Email specify Phone specify HVAC Engineer Info Organization speciy 0000000000 Name specify Title specify Email specify Phone specify Lighting Designer Info Organization specify 000 Name specify Title specify Email specify Phone specify Energy Modeler Info Organization specify 5 0 Name specify Title specify Email specify Phone specify Input summary for the Design Team tab Architect Info section e Organization Architect Organization input is optional e Name Architect primary contact name input is optional e Title Architect primary contact title input is optional e Email Architect primary contact email input is optional e Phone Architect primary contact phone input is optional 23 CBECC COM User Manual 2013 Version 1f HVAC Engineer Info section e Organization HVAC Engineer Organization input is optional e Name HVAC Engineer primary contact name input is optional e Title HVAC Engineer primary contact title input is optional e Email HVAC Engineer primary contact email input is optional e Phone HVAC Engineer primary contact phone input is optional Lighting Designer Info section e Organization Lighting Designer Organization input is optional e Name Li
7. 1 Test_00401 OfficeLarge BlrsChirsProp cibd 2 Test 00101 SchoolPrimary CustomProp cibd 3 Test Q0200 OfficeSmall CECRefProp cibd 4 00300 OfficeMedium CECRefProp cibd 5 00400 OfficeLarge CECRefProp cibd 6 00200 OfficeSmall CECRefProp cibd Exit Open an existing document NUM A Go to the folder where you saved the SDD XML file Select the file type SDD XML Project Files In the example below see the drop down list in the lower right corner Click Open to import the file gt I CBECC Comi3 Projects _DC Test Models OSSDDXMLEports id CBECC ERU gt CBECC Coml3 Projects _DC Test Models OSSDDXMLExports we gt DC Test Models OSSDD XML Eppu tr Seon 05500 HL spos P Search OS SOD XML Search OS SDD XML Epos New folder Hz FH X Favorites Name Date modified Type RE Desktop Example Building xml 8 20 2013 5 44PM XML File Jg Downloads E Recent Places i Libraries E Documents RU Music i Pictures E Subversion Em Videos 1 Computer ti Network ES Files cibd 14 CBECC COM User Manual 2013 Version 1f Simplified Geometry Creating Building Geometry Using the CBECC Com Interface The Simplified Geometry option within CBECC Com GUI allows users to create a building model without specifying coordinates in space for various building surfaces such as walls roofs fenestrations etc The GUI allows a user to create various building
8. Ending Month Index of ending month 1 12 for the first referenced week schedule e Ending Day Index of ending day 1 31 for the first referenced week schedule e Ending Week Schedule The week schedule used in the time period 46 CBECC COM User Manual 2013 Version 1f Schedules Weeks Data Weekly Screen To access this screen under Project name expand ScheduleWeeks and double click an option Week Schedule Data Currently Active Week Schedule School Occup Week Name School Occup Week Sch Type Fraction w Defaulting Assignments All Days none B Weekday School Occup WD Y Weekend nnme e Simulation Assignments sunday School Occup Sun Monday ISchod Occup WD Tuesday School Occup WD Wednesday School Occup WD Thursday School OccupWwD Friday School Occup wD Saturday School Occup Sat Holiday School Occup Sun Clg Design School Occup WD Htg Design School Occup Sun Input summary for ScheduleWeeks Data e Currently Active Week Schedule The name of the currently selected week schedule e Name The name of the schedule e Sch Type A list of schedule control mechanisms comprising of Fraction OnOff and Temperature Defaulting Assignments section e All Days Reference to the All Days schedule e Weekday Reference to the Weekday schedule e Weekend Reference to the Weekend schedule Simulation
9. NonwestwinScaleFactor 1 NonwestwinScaleFactor CondExtRoofArea 24412 7 CondExtRoofArea CondExtSkyltarea CondExtSkyltarea m Version 1f Mat Mat Mat Mat Mat Mat Mat Mat FenCons SpcFuncDefauts SpcFuncDefauks SpcFuncDefaults SpcFuncDefaults SpcFuncDefaults Figure 4 Echo of All Building Inputs in the AnalysisResults XML File Log File A log file is associated with every CBECC project It is located in the same folder as the project cibd file and is named project name log The log file contains a history of when the project was opened saved analysis performed and any errors or warnings that occurred during analysis CBECC COM User Manual 2013 Version 1f EnergyPlus Output Files A set of EnergyPlus output files are generated during each simulation performed and are listed below For additional details on these EnergyPlus output files please refer to the EnergyPlus documentation that can be found here http apps1 eere energy gov buildings energyplus energvplus documentation cfm 4 Energy ni eplusaut audit eplusaut bnd eplusaut eia eplusaut end eplusaut err eplusaut mdd eplusaut rntd eplusout mtr eplusaut rdd eplusaut shd eplusaut sal eplusssz csv c eplustbl htm epluszsz csv sglite err stderr stdout Error Reporting CBECC Com provides error messages if the compliance analysis fails Each error message has a numerical code listed below B8 pe I e
10. The name of the thermal zone made up of 50 or fewer alphanumeric characters HVAC Zone Count The number of building HVAC zones represented by the modeled thermal zone This property is used to simuluate multiples of a single thermal zone All spaces that reference the thermal zone must have the same multiplier and spaces with multipliers greater than one cannot be children of different Story objects The following SDD modeling rules for Multipliers must be followed 1 All spaces that are combined into a thermal zone must have the same Multiplier 2 Spaces that are combined into a thermal zone cannot span multiple stories e Floor Area The gross floor area of a thermal zone before multiplier is applied including walls and minor spaces for mechanical or electrical services such as chases that are not assigned to other thermal zones Larger mechanical spaces and electrical rooms should not be combined e Type Designation of the thermal zone as directly conditioned space indirectly conditioned space i e conditioned only by passive heating or cooling from an adjacent thermal zone or plenum i e unoccupied but partially conditioned as a consequence of its role as a path for returning air e Zone Multiplier This property is used to simulate multiples of a single thermal zone All spaces that reference the thermal zone must have the same multiplier and thermal zones with multipliers greater than one cannot be children of different Story ob
11. by thermal zone Building Model Data Proposed Proposed Standard Design Design Design Site therms kTDV ft yr Site MWh 292 10 0 71 6 99 81 0 19 6 169 5 0 35 8 79 461 203 5 374 109 8 23 6 461 313 3 61 0 Attic Thermal Zone Core ZN Thermal Zone Perimeter_ZN_1 Thermal Zone Perimeter_ZN_2 Thermal Zone Perimeter ZN 3 Thermal Zone o Figure 1 Basic Output Results Certificate of Compliance Report NEN Standard Standard Compliance Design Design Margin Site therms kITDV ft yr kTDV ft yr 292 10 0 717 0 1 81 0 169 5 0 35 8 461 203 6 0 2 109 8 Result PASS 461 313 4 0 Attic Thermal Zone Core ZN Thermal Zone Perimeter_ZN_1 Thermal Zone Perimeter ZN 2 Thermal Zone Perimeter ZN 3 Thermal Zone o CBECC Com produces the Certificate of Compliance for the Nonresidential Performance Compliance Method NRCC PRF 01 E Refer to the section Sample Compliance Documentation for a detailed description of the report CBECC COM User Manual 2013 Version 1f Analysis Results XML File Additionally a full summary of all building inputs and outputs used in the compliance analysis are generated during the analysis This data is captured in an XML file called project file name Analysis Results XML The AnalysisResults XML file is saved in the same folder location as the project CIBD file The AnalysisResults XML file contains data for each model use
12. Air System Basement CAV _ yl Name Basement CAV Availability Sch Office HVACAval v Type VAV Y Count 1 Night Cycle Ctr CycleOnCallPrimaryzone Sub Type SinglePackage Ventilation Ctrl AverageFlow DsgnOAFlow 5753 Control Zone Basement Thermal Zone Ctrl System Type Other sy Reheat Ctrl SingleMaximum Description Cooling Heating Supply Flow Design Flow Area 0753 Design Supply Air Temp 60 0 F 70 0 F Design Flow Ton 5861 Net Capacity 991 294 Btuh 592 613 Btuh 28 880 cfm Reflects capacity of a single system if Count is 1 Fan Position DrawThrough i v Supply Temp Control Fixed amp Fixed Supply Temp 600 oF Setpoint Temp Sch nne F Outdoor Temp E F Outdoor Temp E Reset Supply High Reset Supply Low Input Summary e Currently Active Air System The name of the currently selected Air System e Name The name of the Air System e Type A unique descriptor that identifies high level attributes of a HVAC system Options available are PVAV VAV SZAC SZHP SZVAVAC SZVAVHP and HV e Count The number of duplicate systems represented by the current system The number of duplicate systems can only be 1 when all attributes of the system are the same If Count is specified to be gt 1 all parameters capacities power etc should be specified for the single piece of equipment The ruleset applies multipliers for the final simulati
13. Boiler The name of the currently selected boiler Name The name of the boiler Type Type of boiler in terms of steam or hot water Boiler type in terms of fuel used or draft type are defined in other descriptors and rules Fuel The primary fuel used by the boiler to generate heat Options are gas oil or electric Draft Type Draft type for fuel fired boilers Options include Mechanical and Natural Rtd Capacity Heat output of the boiler at full load and rated conditions Des Entering T The temperature of the hot water returned to the boiler at design conditions This may not be the return water temperature during normal operation Des Leaving T The temperature of the hot water supplied by the boiler at design conditions This may not be the supply water temperature during normal operation AFUE The Annual Fuel Utilization Efficiency of the boiler Applies only to smaller gas propane or oil fired boilers with output heating capacities of less than 300 000 Btu hr For larger fuel fired boilers use thermal efficiency and for electric boilers use EIR Thermal Eff The Thermal Efficiency of the boiler Applies only to larger gas propane or oil fired boilers with output heating capacities of 300 000 Btu hr or more For smaller fuel fired boilers use AFUE For electric boilers use EIR Draft Fan HP The nameplate horsepower of the draft fan motor for boilers with mechanical draft Fuel at Full Ld The fuel consumption at design conditions
14. Construction assembly reference construction name for a demising wall input is optional A reference to a construction assembly e Adjacent Space This references the space on the other side of an interior partition 43 CBECC COM User Manual 2013 Version 1f Roof Data Surface Data Screen To access this screen under Space Data double click Surface Data Roof Roof Data Currently Active Roof OS Surface 29 M Roof Name OS Surface 29 Construction Assm NACM Roof M Roof Area 1 722 2 it Exterior Roughness Roof Surface Properties Field Applied Coating CRRC Properties Initial Aged Solar Reflectance 0 900 0 650 Thermal Emittance 0 650 0 650 Product ID Input summary for Surface Data Roof e Currently Active Roof The name of the currently selected roof e Roof Name A unique name that identifies the roof A unique name or code that identifies the roof and ties it to the construction documents submitted for energy code review It is not mandatory to name roofs e Construction Assm Construction assembly reference for a roof input is optional e Roof Area Calculate area of each roof not editable e Exterior Roughness The surface texture affecting convection Roof Surface Properties section e Field Applied Coating checkbox Option used if a coating was applied in the field e Solar Reflectance The fraction of solar energy reflected by the coating e Thermal Emi
15. EIR_ffempCrvRef Normalized curve that varies full load efficiency EIR as a function of indoor coil and condenser conditions 87 CBECC COM User Manual 2013 Version 1f e Compressor Lockout OAT The outside dry bulb temperature below which the heat pump supplemental heating is allowed to operate e Supp Htr Coil Name Select the Heating Coil e Supp Htr Limit OAT The outside dry bulb temperature below which the heating coil is allowed to operate e Defrost Htr Source The fuel used for defrosting the evaporator e Defrost Htr Capacity The designed power of the defrost e Defrost Control Select if defrost operates at a specific time or when required e Defrost Htr Limit OAT The outside dry bulb temperature below which the defrost is allowed to operate e Crankcase Htr Limit OAT The outside dry bulb temperature below which the crankcase heater is allowed to operate e Crankcase Htr Capacity The designed power of the crankcase heater 88 CBECC COM User Manual 2013 Version 1f Heating Coil Data Screen Resistance Furnace Heat Pump Heating Coil Data Performance Curves Name Type Fuel Source Currently Active Heating Coil BaseSys5 CoilHtg v BaseSys5 CoilHtg Condenser Type M Resistance Component Qty 1 Electric Input Code Minimum HSPF COP ld ER Capacity For single system terminal if Component Qty gt 1 Num Heating Stages pem ot Gross Capacity 140770 Btu h Compressor
16. Exterior Wall and scroll down to Create in the drop down box Then click Door Door Data Currently Active Door Interior Door vi Door Name Interior Door Door Construction NACM Door hi Input summary for SubSurface Data Door Data e Currently Active Door The name of the currently selected door e Door Name The name or description used to identify the door e Door Construction Door construction Input is optional 41 CBECC COM User Manual 2013 Version 1f Poly Loop Data Screen To access this screen under Surface Data Exterior Wall double click Poly Loop Data Poly Loop Data Poly Loop Name Poly 105a Area temporary 21 00 Input summary for the Poly Loop Data screen e Poly Loop Name The name or description used to identify the Poly Loop e Area temporary Area of Poly Loop 42 CBECC COM User Manual 2013 Version 1f Surface Data Interior Wall Screen To access this screen under Space Data double click on Surface Data Interior Wall Interior Wall Data Currently Active Interior Wall OS Surface 24 v Interior Wall Name OS Surface 24 Construction Assm NACM_ Interior Wall Adjacent Space Wing1 Corridor Spc m Input summary for Surface Data Interior Wall e Currently Active Interior Wall The name of the currently selected interior wall e Interior Wall Name The name or description used to identify the interior wall e Construction Assm
17. Name The name of the heat rejection device e Type The type of heat rejection device Heat rejection devices include cooling towers and ground source types The available options are OpenTower ClosedTower GroundSourceHeatExchanger Lake and Well e Rated Capacity The rated cooling capacity at CTI test conditions The cooling capacity at rated conditions of 95 F condenser water return 85 F condenser water supply and 78 F wet bulb with a 3 gpm nominal ton water flow where a nominal ton is 15 000 Btu hr e Number of Cells The number of cells in the cooling tower Each cell has its own fan and water flow allowing for responding to lower load conditions Each cell will be modeled as equal size Cells are subdivisions of cooling towers into individual cells each with their own fan and water flow allowing the cooling system to respond more efficiently to lower load conditions e Tower Air Flow The rate of air moving through the tower e Fan Type The type of fan used in a cooling tower Fan type options are axial or centrifugal e Total fan HP The sum of the nameplate rated horsepower hp of all fan motors on the cooling tower e Condenser water flow rate The rate of water flowing through the condenser 76 CBECC COM User Manual 2013 Version 1f e Modulation Control The method used by the heat rejection device to modulate capacity e Low Speed Air Flow Ratio Ratio of the low speed airflow to full speed airflow The percentage f
18. Project Data Scree Monin rU ov c 68 FH id System Data SCEeeD ioo Pesca aa aa N wea abecsaaaeuiaueaneeaes 68 CET Dat oree ierra a E E aD i cen ct apie oem LN e estu ee 70 Fluid Se bermment Data SCEeBFLu susc etie oed epu vam tov eesbiobe ca deesset ca dumlices diee irae pe dod ce cod e caius MuR 72 PUMO Dala SCEeOnuuedietds d eI Ar eonsidia ed Nes Pbp t i qu I adiu iIsrU 73 EVO Se Aa SCIO ese uedts terms torii iseneituri metusa cdm sateen Role rM cip autos weet eames M CE erc at 74 Heat Rejection Device Data Screen lessen eene nennen nnns sesu esee stesse es 76 Budne Datdsckeeliccetunescatu Su tci a eT e s Op RIO 77 Air System Data SCILeeb sceau vede o PER eU EUER saad e VENE te ERLPE EVA HERR DER VIE Y aie DPA V ER Ve RE CEDE 78 Air Segment Data SChE CM is cisciocatsavcnsacdnicsualonictunlacucaes antowan had OPER EU Pr UP A ERU Do UV UR OP Ee M EPUR TORRE VE URNA 81 Cooling Coil Data Screen Chilled Water oaker is D tei ad eR oae Dader ef Dedi ua dea bee ai 82 CBECC COM User Manual 2013 Version 1f Cooling Coil Data Screen Direct Expansion ccesccccccsssseccccceesseccceeeeesececeseueeseceeeseeeneceeetaeenes 84 Heating Coil Data Screen Hot Water Steam ssseeseeeeeeeneeenee enne nennen nnne 86 Heating Coil Data Screen Resistance Furnace Heat Pump c csscccccsesssecceeeeeseeceeeeeeeeeeeeees 89 Fan Data SOCKS I EA T 9
19. Standard final model Error s encountered retrieving Proposed model simulation results Error s encountered retrieving Standard Sizing model simulation results Error s encountered retrieving Standard final model simulation results Proposed model zone s exceed unmet load hours limits Error initializing building model database Error loading analysis ruleset User aborted analysis via progress dialog Cancel button Invalid results object types Error copying results objects from a previous model Error copying equipment sizes flows from source model Error s encountered reading building model input project file Error EnergyPlus simulation engine not found Error Version of EnergyPlus installed not compatible with analysis Error setting up check of weather amp design day file hashes DHW simulation not successful Return values in the range 101 200 describe issues encountered during by simulation 101 102 103 105 135 162 SDD XML simulation input file not found Simulation weather file not found Simulation processing path not valid 104 Simulation executable path not valid Simulation error output path file not valid 106 131 132 133 134 User aborted analysis Error encountered in OpenStudio loading SDD XML file Error encountered in OpenStudio saving model to OSM file Unable to locate EnergyPlus simulation SQL output file OpenStudio Model not valid following simulation OpenStudio Faci
20. The fraction of floor area that is exempt from the Minimum Daylit Area requirement 2013 T 24 Standards Sec 140 3 c e Excluded Area Total area excepted from the skylight Minimum Daylit Area requirement e Exception The specific exception to the Minimum Daylit Area requirement Possible exceptions include o The building is not located in climate zone 1 or climate zone 16 automatically identified by CBECC software EM o Designed general lighting is less than 0 5 W ft2 automatically identified by CBECC software o Existing walls on plans result in enclosed spaces less than 5 000 ft2 o Future walls or ceilings on plans result in enclosed spaces less than 5 000 ft2 or ceiling heights less than 15 feet 33 CBECC COM User Manual 2013 Version 1f o Plans or documents show that space is an auditorium religious building of worship movie theater museum or refrigerated warehouse Skylit Daylit Area The skylit area is the portion of the floor area that gets daylighting from a skylight PriSide Daylit Area The primary sidelit daylit area is the portion of the floor area that gets the highest illumination from a window Primary sidelit daylit area is defined as a band near the window with a depth equal to the distance from the floor to the top of the window and width equal to window width plus 0 5 times window head height wide on each side of the window opening SecSide Daylit Area The secondary sidelit daylit area is th
21. Type Selection allows for constant or variable speed pump Design Flow Rate The capacity of the pump Minimum Flow Rate The lowest flow rate available for the pump Motor Eff Indicates how well the motor converts electrical power into mechanical power and is defined as output power divided by input power expressed as a ratio Impeller Eff Full load efficiency of the pump impeller Pump Head The pressure head of the pump at design flow conditions Nameplate Motor HP The nameplate horsepower of the pump motor Power The design power of the pump This inputs gets calculated by the software based on user inputs for other pump parameters Power Per Flow Ref The power of the pump per unit flow at design flow capacity Pwr fPLR Curve Name The name of the power as a function of PLR curve This is normally a biquadratic curve 73 CBECC COM User Manual 2013 Version 1f Boiler Data Screen Boiler Data Name Type Fuel DrattT ype Rtd Capacity Des Entering T Des Leaving T AFUE Thermal Eff Draft Fan HP Fuel at Full Ld Currently Active Boiler Elec HW Bir M Elec HW Blr HotWater Status New Electric hi E Inlet FluidSeg HW Frimary Return Z HasBypass 5 000 000 Btu h Outlet FluidSeg HW Primary Supply 1350 F UnidRatMin 0 000 frac 1850 F HIR fPLRCmReft none 0 800 frac HP Btu h Input Summary Currently Active
22. etc Schedules ProcElecPwrDens Reference to a schedule that describes the fraction of receptacle use on an hourly basis RadFrac ProcElecPwrDens The fraction of radiant heat gain to a space based on appliance energy use LatFrac ProcElecPwrDens The fraction of latent heat gain to a space based on appliance energy use LostFrac ProcElecPwrDens The fraction of heat lost to the exterior is based on appliance energy use RfrgPwrDens The amount of power supplied to a unit area for refrigeration Schedules RfrgPwrDens Reference to a schedule that describes the fraction of refrigeration use on an hourly basis Natural Gas Use section GasEqpPwrDens Commercial gas power density is the average power density for all commercial gas equipment assuming constant year round operation Schedules GasEqpPwrDens Reference to a schedule that describes the fraction of gas equipment use on an hourly basis ProcGasPwrDens Process load is the gas energy consumption in the conditioned space of a building resulting from an activity or treatment not related to the space conditioning lighting service water heating or ventilating of a building as it relates to 63 CBECC COM User Manual 2013 Version 1f human occupancy Process load may include convective sensible and or latent components Schedules ProcGasPwrDens Reference to a schedule that describes the fraction of process gas equipment use on an hourly basis RadFrac ProcGasPwr
23. fraction of heat lost to the exterior based on appliance energy use 32 CBECC COM User Manual 2013 Space Data Screen Daylighting Tab To access this screen double click on Space Data and then click on the Daylighting tab Space Data Daylighting Infiltration Currently Active Space Lobby_Spc M Minimum Daylit Area per 2013 T 24 Standards Sec 140 3 c Skylt Req Exception Fraction 0 00 Excluded Area Daylighting Control Positions Skylit Daylit Area 0 00 ft2 Daylighting Controls No PriSide Daylit Area 324 96 ft2 Daylighting Controls Yes X Controlled Power 194 975 Watts Y Controlled Fraction f 0 479199 Z Illum Set Point T5 lux SecSide Daylit Area 324 96 ft2 Daylighting Controls Yes x Controlled Power 194 975 Watts Y Controlled Fraction 0 479199 z Illum Set Point T5 lux 3 m Ref Position Ref Position Ref Position Building Model Data Exception none Daylighting Control Parameters DayltgCtriType Continuous NumOfCtriSteps MinDimL tgFrac 03 MinDimPwrF rac 0 2 GIrAz mm MaxGirldx EN Version 1f ES Input summary for the Space Data screen Daylighting tab e Currently Active Space The name of the currently selected space e Minimum Daylit Area per 2013 T 24 Standards Sec 140 3 c Area Required to be daylit Skylit Primary Sidelit by Section 140 3c of Title 24 Standards e Skylt Req Exception Fraction
24. is determined in accordance with AHRI standards e SEER Code Minimum Code Minimum SEER value 84 CBECC COM User Manual 2013 Version 1f e EER Input The cooling efficiency of a direct expansion DX cooling system at AHRI rated conditions e EER Code Minimum Code Minimum EER value e EIR Input The cooling efficiency of a direct expansion DX cooling system described for simulation purposes Energy Input Ratio EIR is the inverse of the COP 85 CBECC COM User Manual 2013 Version 1f Heating Coil Data Screen Hot Water Steam Heating Coil Data Performance Curves Currently Active Heating Coil BasementCoilHeating Y Name BasementCoilHeating Condenser Type Type Hotwater v Component Qty 1 Inlet FluidSeg Hw Primary Supply X Input Code Minimum Outlet FluidSeg Hw Primary Return Y PET COP Capacity For single system terminal if Component Qty gt 1 EIR Num Heating Stages Compressor Lockout OAT E Gross Capacity 395 076 Btu h 5 Supp Htr Coil Name none Supp Htr Limit OAT SE Design Flow Rate 19 7 gpm PP Defrost Htr Source none e Input Code Minimum Defrost Htr Capacity Btu h AFUE Defrost Control specify Thermal Eff 07 T Defrost Htr Limit OAT ignition Type o Crankcase Htr Limit OAT F Pilot Fuel Input Btu h Crankcase Htr Capacity SS Btu h Heating Coil Data Screen Hot Water Steam Perfo
25. of CEC default properties e Skylit Glazing This property describes the skylight glazing material and allows for lookup of baseline performance parameters e Skylt Curb This property describes the skylight curb configuration and allows for calculation of CEC default properties using the NA 6 calculation method e Product Type This property describes the type of window or skylight and allows for lookup of CEC default and Standard Design properties e Oper Config This property describes the configuration of operable windows and allows for lookup of CEC default properties Possible Selections are 58 CBECC COM User Manual 2013 Version 1f o Casement Awning e SlidingPanes This property describes the window pane configuration and allows for lookup of CEC default properties e Frame This property describes the window framing and allows for calculation of CEC default properties using the NA 6 calculation method e Win Divider This property describes the window divider configuration and allows for lookup of CEC default properties e Tint This property describes the window tinting and allows for lookup of CEC default properties e U Factor The rate of heat transfer of the fenestration e SHGC The fraction of solar energy transmitted through the fenestration e Vis Trans The fraction of visible light transmitted through the fenestration 59 CBECC COM User Manual 2013 Version 1f Exterior Shading Object Data Screen To a
26. pm One hour occurrence between 10 p m and 11 p m e 11 Mdnt One hour occurrence between 11 p m and midnight 50 CBECC COM User Manual 2013 Version 1f Construction Assembly Data Screen To access this screen under Project name expand ConstructAssemblies and double click Exterior Wall Building Model Data x Construction Assembly Data Currently Active Cons Assembly Base CZ12 NonresMetalF rameWallU062 Name Base CZ12 NonresMetalF rameWValll U Fctr 0 062 Btu h F ft2 Interior Exterior Compatible Surface ExteriorWall ha Solar Absorbance 0 700 0 920 Thermal Absorptance 0 900 0 750 Outside gt Inside Layers Visible Absorptance 0 900 0 750 Outside Lyr Succo 7 8in 1 o Exterior Roughness MediumRough Layer 2 Compliance Insulation RI399 Layer 3 Air Metal Wall Framing 16 or 24 in OC Layer 4 Gypsum Board 1 2 in Layer 5 none o v OK Input summary for Construction Assembly Data Currently Active Cons Assembly The name of the currently selected construction assembly Name The name or description used to identify the construction assembly U Fctr The overall U Factor of the selected Construction Assembly Compatible Surface The type of surface object that this construction assembly can be assigned to Solar Absorbance Interior Represents the fraction of incident solar radiation that is absorbed by the inward facing surface of the overall
27. power fraction when controlled lighting is fully dimmed Minimum power fraction Minimum power Full rated power e GlrAz This field specifies the view direction for calculating glare It is the angle measured clockwise in the horizontal plane between the zone y axis and the occupant view direction e MaxGlridx If a daylit zone has windows with shading devices except exterior screens the shades will be deployed if the daylight glare at the First Reference Point exceeds the value of this field 35 CBECC COM User Manual 2013 Version 1f Space Data Screen Infiltration Tab To access this screen double click on Space Data and then click on the Infiltration tab Building Model Data xX Space Data Daylighting Infiltration Infiltration DsgninfRt InfMthd FlowExteriorWallArec v School Inf Sch v 0 0448 cfm ft2 Infiltration Model Coefficients A 0 00000 B 0 00000 1 F C 0 10016 hr mile D 0 00000 hr2 mile2 Input summary for the Infiltration tab e InfMthd The method used to calculate infiltration rate specified by the ACM to be leakage through the building walls per unit area cfm ft Methods available to calculate infiltration include effective leakage area which is generally applicable for small residential scale buildings The required component leakage method requires the user to specify the average leakage through the building wall per unit area cfm ft Component leakage rates can also be applied to
28. pump at AHRI rated conditions COP Code Minimum The Code minimum COP EIR Input The heating efficiency of a heat pump heating coil described for simulation purposes Energy Input Ratio EIR is the inverse of the COP 89 CBECC COM User Manual 2013 Version 1f e Compressor Lockout OAT The outside dry bulb temperature below which the heat pump supplemental heating is allowed to operate e Supp Htr Coil Name Select the Heating Coil e Supp Htr Limit OAT The outside dry bulb temperature below which the heating coil is allowed to operate e Defrost Htr Source The fuel used for defrosting the evaporator e Defrost Htr Capacity The designed power of the defrost e Defrost Control Select if defrost operates at a specific time or when required e Defrost Htr Limit OAT The outside dry bulb temperature below which the defrost is allowed to operate e Crankcase Htr Limit OAT The outside dry bulb temperature below which the crankcase heater is allowed to operate e Crankcase Htr Capacity The designed power of the crankcase heater e AFUE Input The Annual Fuel Utilization Efficiency AFUE is an indicator of expected seasonal furnace efficiency It is determined in accordance with DOE Test Standards e AFUE Code Minimum The Code minimum AFUE e Thermal Eff Input The heating efficiency of a furnace at AHRI rated conditions e Thermal Eff Code Minimum The Code minimum Thermal efficiency e Ignition Type The method us
29. the total building envelope area Specification of a maximum rate usually as air changes per hour is also used For all methods the rate is modified by a schedule e Infiltration Model Coefficients The constant and linear coefficients to affect the infiltration e DesgninfRt Design infiltration airflow 36 CBECC COM User Manual 2013 Version 1f Interior Lighting System Data Screen To access this screen right click on a space and scroll down to Create in the drop down box Then click InteriorLightingSystem The Create InteriorLightingSystem dialog box appears Make your selections and click OK Interior Lighting System Data Currently Active Interior Lighting System Classroom Sys 1 m IntLtgSys Name Classroom Sys 1 SchRef School Lighting Sch Pwr 1 060 0 W Ww PwrReg Regulated Power This System Parent Space DaylitAreaType F none LumMntgHat 14 76 HtGnSpcFrac 0 45 LumRef 1 Recessed 4 x 4 Lamp T 8 LumCnt 1 10 HtGnRadFrac 0 67 4 LumRet 2 p none LumCnt 2 0 PAFCredType none specified PAF 0 00 frac TailoredMthdAllowType E none specified AreaCatAllowType p none specified AllowBoardWd 0 0 ft AllowArea 0 0 ft2 Input summary for Interior Lighting System Data e Currently Active Interior Lighting System The name of the currently selected interior lighting system e IntLtgSys Name The name of the Interior Lighting System e PwrReg Regulat
30. 002 CMF pdf 2012 Appliance Efficiency Regulations http www energy ca gov 2012publications CEC 400 2012 019 CEC 400 2012 019 CMF pdf Reference Nonresidential Appendices http www energy ca gov 2012publications CEC 400 2012 005 CEC 400 2012 005 CMF pdf Reference Joint Appendices http www energy ca gov 2012publications CEC 400 2012 005 CEC 400 2012 005 CMF pdf 105
31. 1 Terminal Unit Data SCEeBn ous pt HE ERRASSE IDE HUE CI I UEM dep eve Pap Sed IqE I SES 93 Outside Air Control Data Sree enaren Ev iE Ever P x ro t ras 95 ThermalZone Data SCCM siii ooi tuia tle E 97 binear CURED dla SChEC TTE TI TUTUP Tp 99 Quadratic Curve Data SGre EM eei ato ev uade oo et Ouod do entente pue t ettet ree ul eet bu nb sr boob enas 100 CUBIC CURVE Data SCEeepc sese pp erhebt de oae o Puede uis odvbese desde doe os rro E bc beoe 101 Double Ouadratic Curve Data SCEeBniasesnipei bt d ed o petu ti braces ttes env atu a Nor bara aca Sa o eR 102 SPECIAL FEATURES AND MODELING ASSUMPTIONS eene eee eene eene eese she heres testes o un 103 FIELD VERIFICATION m 104 CHECKLIST FOR COMPLIANCE SUBMILITTAL res neu e en ss Ta eek een sna PYa ka Ta voe EE Pu KUVEY V Fu e URS Cao aaO Eon Dea da eae op YR 104 SAMPLE COMPLIANCE DOCUMENTATION eee eene eene nene nens hn sense sh sse se sese ss esee se sesso seo un 104 COMPLIANCE STATEMENT iei voee SIRE VUE TE Eu VERRE Eri MS Vengo os uS E vRn STEYR QUE NIME ENa 105 RELATED PUBLICATIONS 5555s vab eode eui exa vah aive qu Coo veda qe Fa e Pre Pa eeu ba x a red eu bop ive ibn v feti uere Dd PES 105 CBECC COM User Manual 2013 Version 1f Overview CBECC COM 2013 is an open source software program developed by the California Energy Commission for use in complying with the 2013 update to the Non Resi
32. 13 Version 1f Terminal Unit Data Screen Terminal Unit Data Currently Active Terminal Unit BaseVAVTrmlUnit X Name BaseVAV TrmlUnit of Terminal Units 1 Type VAVReheatBox v Component Qty 1 Zone Served CorridorFIr1 Thermal Zone M Primary AirSeg Ref BaseSys5 SupAirSeg Air Flow For single terminal if Terminals or Component Qty gt 1 Max Primary Flow Min Primary Flow Max Heating Flow Reheat Ctrl Method 1 644 cfm 329 cfm 822 cfm DualMaximum OK Input Summary Currently Active Terminal Unit The name of the currently selected terminal unit Name The name of the terminal unit of Terminal Units The number of duplicate terminal units represented by the current terminal unit Type The type of terminal used to deliver and if applicable regulate air delivery to a thermal zone Component Qty The number of duplicate systems represented by the current system The number of duplicate systems can only be 1 when all attributes of the system are the same If Count is specified to be gt 1 all parameters capacities power etc should be specified for the single piece of equipment The ruleset applies multipliers for the final simulation Zone Served The name of the thermal zone that the terminal unit provides air to Primary AirSeg Ref Definition of the supply air segment that provides primary air to the terminal unit Air Flow section Max Primary Flow The zon
33. 2013 Version 1f is reset based on warmest zone specifies the minimum supply air temperature for reset e Outdoor Temp Low The maximum high outdoor air temperature at the low reset supply air temperature during cooling If cooling supply air temperature is reset based on outside air temperature specifies the supply air low setpoint to at the outside drybulb high 80 CBECC COM User Manual 2013 Version 1f Air Segment Data Screen Air Segment Data Currently Active Ar Segment Basement CAV Airseqment Supp Name Basement CAV AirSegment Sup Type Su pply E Input Summary e Currently Active Air Segment The name of the currently selected Air Segment e Name The name of the air segment e Type The type of Air Segment Options are Supply Return Relief DualDuctSplitter ExhaustSegment and MakeUpAlr 81 CBECC COM User Manual 2013 Version 1f Cooling Coil Data Screen Chilled Water Cooling Coil Data Performance Curves Currently Active Cooling Coil BasementCoilCooling Name BasementCoilCooling Condenser Type TO Type ChilledWater Y Component Qty 1 Inlet FluidSeg Chw Secondary Supply v Input Code Minimum Outlet FluidSeg Chw Secondary Return SEER EER Capacity For single system terminal if Component Qty gt 1 EIR Total Gross Capacity 591 294 Btu h Design Flow Rate 59 1 gpm Cooling Coil Data Screen Chilled Water Performance Cu
34. 6 DMG 69 1 MB Linux 7 0 0 036 5H B8 2 MB Windows d 1 0 DIZ EXE dy Ti Macintash 1 0 03172 Oli 68 1 hie Linux T 1 0 012 15H 88 2 MB Windows 7 2 0 O06 EXE 30 3 ME 0 Macintosh 7 2 0 6 OMG 76 3 MB Linux 7 2 0 006 8H 87 6 MB Windows 0 DD EXE 5 Linux 6 0 0 007 34 100 6 Linux 8 0 0 DDB SH 109 7 54 Bit 64 Blit Windows 64 bit 7 0 0 036 EXE 81 4 MB Macintosh 54 bit 0 0 Usb DS 69 3 MEI Linux amp 4 bs 7 0 0 036 SH B8 7 MB Windows 64 bit 7 1 0 012 EXE 81 4 MB Macintosh 64 bit 7 1 0 D12 DM G 69 4 MB Linux EE bit 7 1 0 012 SH 85 7 MB c Windows 64 bit 7 2 0 006 EXE 32 ME Macintosh 64 bit 7 2 0 DDG DMG 77 7 MB Linux Ed bit 7 2 0 006 SH BB 7 ME BART E EAE WIESE RTT ETIN 2 Macintosh 4 bit 8 0 0 ODE DMG 759 8 2 Linux amp bit 8 0 0 Q0 SH 101 6 E hi 1 00E EXE 93 7 W Macintosh 64 bit B O 0 DOF DMG TT 7 Linux 64 bit 8 0 0 008 SH 101 7 OpenStudio Translator No additional download is required This functionality is included in the CBECC Com installation Creating Building Geometry Using the OpenStudio Plug In for Trimble SketchUp The OpenStudio plug in for SketchUp allows users to create a representation of a building s geometry The tool should be used for the following steps e Draw the building s floor plans and generate all Building Stories and Spaces in the building e Draw all Surfaces e g walls floors roofs and sub surfaces e g windows doors skylights and verify that they are ac
35. AULT rule expression is present in the ruleset then the default selection displays in the UI using this color User Defined Dark Red Any field that was input or specified by the user These data are all written to project CIBD XML files to persist across each CBECC session Some data that is set by the program is also characterized as User Defined whenever it is something that is important to be available in future CBECC sessions of that project Simulation Results Dark Green When simulation results are pulled directly out of sim output files and posted to the building model then they are typically flagged as SimResults Most of the results shown in CBECC are processed by the ruleset and therefore display as Rule Defined but some data including zone UMLH results are displayed in green immediately following the analysis CBECC COM User Manual 2013 Version 1f Preparing Basic Input In order to start a new project the user must first prepare basic input into a model that describes his her building project This model is called the User Model During the analysis calculation procedure this model is used to automatically define the two compliance models 1 The Proposed Design Model the Proposed Design model is very similar to the User Model however some inputs such as schedules plug loads and others are replaced with prescribed values specified in the NACM 2 The Standard Baseline Design Model the Standard Design model is genera
36. Assignments section e Sunday Reference to the Sunday schedule 47 CBECC COM User Manual 2013 Version 1f e Monday Reference to the Monday schedule e Tuesday Reference to the Tuesday schedule e Wednesday Reference to the Wednesday schedule e Thursday Reference to the Thursday schedule e Friday Reference to the Friday schedule e Saturday Reference to the Saturday schedule e Holiday Reference to the Holiday schedule e Clg Design Reference to the Cooling Design sizing day schedule e Htg Design Reference to the Heating Design sizing day schedule 48 CBECC COM User Manual 2013 Version 1f Schedules Days Data Daily Screen To access this screen under Project name expand ScheduleDays and double click an option Day Schedule Data Currently Active Day Schedule School Occup WD X Name School Occup WD Sch Type Fraction vi M 1 am 0 000 noon 1 0 800 Avg 0 296 1 2 am 0 000 1 2 pm 0 800 Sum 7 10 2 3am 0 000 2 3 pm 0 600 3 4 am 0 000 3 4 pm 0 450 4 5 am 0 000 4 5 pm 0 150 5 5 amr 0 000 5 6 pm 0 050 ii al elel amp 7am 0 000 6 7 pm 0 150 T 8 am 0 050 T 8 pm 0 200 r r 8 9 am 0 750 8 9 pm 0 200 9 10 am 0 300 9 10 pm 0 100 10 11 am 0 300 10 11 pm 0 000 r 11 noon 0 800 11 Mdnt 0 000 Input Summary screen for ScheduleDays Data e Currently Active Day Schedule The name of the currently selected day schedule e Name T
37. ConstructionAssembly with respect to the Space that the surface is assigned to Solar Absorbance Exterior Represents the fraction of incident solar radiation that is absorbed by the outward facing surface of the overall ConstructionAssembly with respect to the Space that the surface is assigned to Thermal Absorptance Interior Represents the fraction of incident long wavelength radiation that is absorbed by the inward facing surface of the overall ConstructionAssembly with respect to the Space that the surface is assigned to Thermal Absorptance Exterior Represents the fraction of incident long wavelength radiation that is absorbed by the outward facing surface of the overall ConstructionAssembly with respect to the Space that the surface is assigned to 51 CBECC COM User Manual 2013 Version 1f e Visible Absorptance Interior Represents the fraction of incident visible wavelength radiation that is absorbed by the inward facing surface of the overall ConstructionAssembly with respect to the Space that the surface is assigned to e Visible Absorptance Exterior Represents the fraction of incident visible wavelength radiation that is absorbed by the outward facing surface of the overall ConstructionAssembly with respect to the Space that the surface is assigned to e Exterior Roughness The relative roughness of the exterior surface The roughness affects convective heat transfer of the surface Outside Inside Layers sectio
38. Dens The fraction of radiant heat gain to a space based on appliance energy use LatFrac ProcGasPwrDens The fraction of latent heat gain to a space based on appliance energy use LostFrac ProcGasPwrDens The fraction of heat lost to the exterior is based on appliance energy use Space Function Defaults Infiltration Infiltration InfMthd Building Model Data EJ DsgninfRt FlowExteriorWallAre v School Inf Sch 0 0448 cfm ft2 Infiltration Model Coefficients A 0 00000 B 0 00000 1 F C 0 10016 hr mile D 0 00000 hr2 mile2 d OK Infiltration tab InfMthd Method used for modeling uncontrolled air leakage or infiltration Options include FlowZone FlowArea FlowExteriorArea FlowExteriorWallArea and AirChangesPerHour DsgninfRt The infiltration rate specified as cfm ft of exterior wall area at a wind speed of 10 mph and an infiltration schedule value of 1 The default value of 0 0448 cfm ft must be used unless specific air sealing methods beyond requirements of the standard are applied and documented Infiltration Model Coefficients A Infiltration overall coefficient Infiltration Model Coefficients B Infiltration temperature coefficient Infiltration Model Coefficients C Infiltration windspeed coefficient Infiltration Model Coefficients D Infiltration windspeed squared coefficient 64 CBECC COM User Manual 2013 Version 1f Luminaires Data Screen To access this screen under t
39. Flow Ton Air flow per net cooling ton for auto hardsizing the system e Fan Position The position of the supply fan relative to the cooling coil e Supply Temp Control The method of controlling the supply air temperature of a single duct system or the cold duct of dual duct system e Fixed Supply Temp The temperature of the air being supplied to the space e Setpoint Temp Sch The scheduled supply air temperature setpoint of a single duct air system or the scheduled setpoint temperature of the cold duct in a dual duct system e Reset Supply High The maximum high reset supply air temperature for a single duct system or for the cold duct of a dual duct system If supply air temperature is reset based on outside air temperature specifies the supply air high setpoint to at the outside drybulb low If supply air temperature is reset based on Warmest zone specifies the maximum supply air temperature for reset e Outdoor Temp High The minimum low outdoor air temperature at the high reset supply air temperature during cooling Applicable when cooling supply air temperature is reset based on outside air temperature specifies the outside drybulb low e Reset Supply Low The minimum low reset supply air temperature during cooling If cooling supply air temperature is reset based on outside air temperature specifies the supply air low setpoint to at the outside drybulb high If cooling supply air temperature 79 CBECC COM User Manual
40. Lockout OAT E Supp Htr Coil Name none e Supp Htr Limit OAT oF Defrost Htr Source nne Input Code Minimum Defrost Htr Capacity Btu h AFUE Defrost Control specify l Thermal Eff it Tf 4 Defrost Htr Limit OAT Ignition Type pe Crankcase Htr Limit OAT F Pilot Fuel Input I Btu h Crankcase Htr Capacity 4i Btu h Input Summary OK Currently Active Heating Coil The name of the currently selected heating coil Name The name of the heating coil Type The type of heating coil Options are Resistance Furnace Heat Pump Hot Water and Steam Condenser Type The type of condenser for heat pump heating systems Options include Air WaterSource Groundwater Source and GroundSource Fuel Source The fuel driving the heating coil Num Heating Stages The number of heating stages for a furnace or heat pump heating coil This applies to heating coils with more than one stage of heating This system is typically a packaged unit with multiple heat pump compressors or a furnace with multiple firing rates Gross Capacity The gross heating capacity of the coil at AHRI conditions without adjustments for fan heat HSPF Input The Heating Season Performance Factor HSPF is an indicator of expected average seasonal heat pump efficiency It is determined in accordance with AHRI Standards HSPF Code Minimum The Code minimum HSPF COP Input The heating efficiency of a heat
41. Manual 2013 Version 1f Organization of the Envelope Tab continued FU 010012 SchSml CECStd CBECC Com 2013 File Edit Ruleset View Tools Help ScheduleDays been W Base CZ12 NonresMetalFrameWallUO62 ExteriorWall errata W Base C 12 FlatNonresWoodFramingAndOtherRoofU039 Roof ee W Base C 12 SlabOnOrBelowGradeF073 UndergroundFloor 2 epe BE NACM Interior Wall InteriorWall bii EK Base CZ12 NonresOtherFloorUO71 ExteriorFloor Materials m sueco 7 8 in Materials Single Layer Data Compliance Insulation R13 99 gt Gypsum Board 1 2 in Materials Composite Data 5 Metal Standing Seam 1 16 in Note single layer A omnia tM use the Ei Compliance Insulation R24 86 Se available a NACM Gypsum Board 5 8in a Compliance Insulation R9 83 e Plywood 5 8 in zw Carpet 3 4 in FenestrationConstructions i Base AIICZ FixedWindowU36 Fenestration Construction Data DoorConstructions Luminaires 20 CBECC COM User Manual 2013 Organization of the Envelope Tab continued pu 010012 SchSml CECStd CBECC Com 2013 Version 1f File Edit Ruleset View Tools Help 010012 SchSml CECStd g Primary School 1 story 24 413 cond fi 7 ia Level 1 fc schedules pois ScheduleWeeks oe ScheduleDays ns ConstructAssemblies Materials FenestrationConstructions DoorConstructions opaceF unctionDetaults Office Defaults Space Function Defaults Data
42. R Value of the composite Layer 55 CBECC COM User Manual 2013 Version 1f Materials Data Single Layer Screen Category Concrete To access this screen under Project name expand Materials and double click the Concrete option Note Selecting Category Concrete prompts you to add additional inputs red box below Material Data Currently Active Material NACM Concrete Ain Name MACM Concrete 4in ICC Eval Svc Rpt Num RefCnt Category Concrete Cont Insulation Outside Roofs Waterprf Membrane FrmD pth selection Concrete 140 Ib ft3 4 in v SimpleR R Value F t2 h Btu Thickness in Thermal Cond Btu h F ft Specific Heat Btu lb F Density Ib ft3 CMU Properties Weight speiy Fil specify Input summary for Materials Data Category Concrete e Weight The relative density of a CodeCategory CMU material layer The definitions correspond to the following density values o 105 Ib ft 3 for lightweight o 115 lb ft 3 for medium weight o 125 b ft 3 for normal weight o 130 Ib ft 3 for clay unit e Fill The fill condition of hollow unit masonry walls The definitions correspond to the following conditions o Solid Where every cell is grouted o Empty Where the cells are partially grouted and the remaining cells are left empty o Insulated Where the cells are partially grouted and the remaining cells are filled with perlite or some other insulating materi
43. User Manual for CBECC COM 2013 CBECC COM 2013 User Manual Version 1f March 21 2014 CBECC COM User Manual 2013 Version 1f About This User Manual This user manual provides information for using CBECC Com in one comprehensive document The information presented is current as of the release on the title page Please refer to the Quick Start Guide for CBECC Com 2013 at http bees archenergy com for the latest enhancements and updates to the software Document Conventions For emphasis Italic type is used Menu commands commands options user input and tabs These items found in the user interface are bolded This word in a text box indicates an important tip reminder or additional information about a particular item e g informational notes or definitions Support Information If you experience any issues with the software we welcome your feedback to help improve CBECC Com Prior to submitting an issue please verify that you are using the latest release of CBECC Com If you are using an older version refer to the current Quick Start Guide and check the release notes to see whether it has been addressed If you are using the latest release then please submit an issue in as much detail as possible using the form at http bees archenergy com issue html CBECC COM User Manual 2013 Version 1f Table of Contents OVERVIEW T P VI Ene
44. ace DHW Recirc The domestic hot water loop coming into the space Electric Use section IntPDReg Total regulated connected lighting power density for all interior lighting systems in a Space This includes the loads for lamps and ballasts Schedules drop down box Reference to a schedule that describes interior lighting use Fraction to Space Fraction of regulated interior lighting heat gain going to space air Radiant Fraction Fraction of regulated interior lighting radiant heat gain going to space surfaces IntPDNonReg Total non regulated connected lighting power density for all interior lighting systems in a Space This includes the loads for lamps and ballasts Schedules drop down box Reference to a schedule that describes the fraction of lighting use on an hourly basis Fraction to Space Fraction of non regulated interior lighting heat gain going to space air Radiant Fraction Fraction of non regulated interior lighting radiant heat gain going to space surfaces RecptPwrDens The usage of electrical devices plugged into receptacles in a space based on the occupancy type Schedules drop down box Reference to a schedule that describes the fraction of receptacle use on an hourly basis ProcElecPwrDens Process electrical power density resulting from an activity or treatment not related to the space conditioning lighting service water heating or ventilating of a building as it relates to human occupancy Process load may in
45. al 56 CBECC COM User Manual 2013 Version 1f Materials Data Composite Screen To access this screen under Project name expand Materials and double click the Air Metal Wall Framing option Then in Category select Composite Note Selecting Category Composite in the Material Data screen prompts you to add additional inputs red box below describing the framing configuration and cavity insulation Material Data Currently Active Material NACM AGVWall Framing Cavity m Name NACM AGVWVall Framing Cavity ICC Eval Sve Rpt Num RefCnt Category Compo site m Cont Insulation Outside Roofs Waterprf Membrane FrmDpth SimpleR R Value F R2 h Btu Framing Material Metal Configuration Wall24inOC Depth 5 Sin Cavity Ins R Wal R 21 F t2 h Btu Framing Factors Cavity Frm Input summary for Materials Data Composite screen Framing section e Material The framing is constructed with the selected material e Configuration The framing is constructed with the selected configuration e Depth The framing is constructed with the selected depth e Cavity Ins R Val Nominal R value of composite layer cavity insulation e Notes A space to leave detailed information about the framing material and construction Framing Factors Section e Cavity Fraction of cavity in the composite layer e Frm Framing factor fraction of framing members 57 CBECC COM User Man
46. al Gross Capacity 321 919 Btu h Net Capacity 308 551 Btu h OK Input Summary e Currently Active Cooling Coil The name of the currently selected cooling coil e Name Name of the cooling coil e Type The type of cooling coil Options available are Chilled Water and Direct Expansion e Fuel Source Electric is the only source of fuel for direct expansion e Num Cooling Stages The number of mechanical cooling stages for a DX cooling coil This applies to DX systems with more than one stage of DX cooling This system is typically a packaged unit with multiple compressors and a two speed or variable speed fan e Net Capacity Total The net total both sensible and latent cooling capacity both sensible and latent of a cooling coil in unitary system at AHRI conditions The net capacity is the total cooling capacity of the coil after adjusting for fan heat at rated conditions e Gross Capacity Total The gross total both sensible and latent cooling capacity of a cooling coil or packaged DX system at AHRI rating conditions The gross capacity is the total cooling capacity without adjustments for fan heat e Condenser Type The type of condenser for a direct expansion DX cooling system Options available are Air Evaporatively Cooled Water Source Groundwater Source and Ground Source e SEER Input The Seasonal Energy Efficiency Ratio SEER is a term used to describe the seasonal performance of a DX cooling system It
47. are there is a means to specify the refrigeration capacity Btu h and the location of the condenser remote or in the space CBECC assumes a fixed COP of 2 8 to calculate the heat rejection for condensers that are not located remotely Refrigeration for modeling purposes is considered a neutral load the same value is used in the proposed design and standard design model 103 CBECC COM User Manual 2013 Version 1f Field Verification The following list of features must be verified in the field e NRFC rating for Fenestration e Thermal performance of Window Films For details refer NA7 of 2013 Nonresidential Appendices e Thermal performance of Dynamic Glazing For details refer NA7 of 2013 Nonresidential Appendices e Lighting Controls installed to earn a Power Adjustment Factor PAF in accordance with Section 140 6 a 2 For details refer NA7 of 2013 Nonresidential Appendices e Lighting for a Videoconferencing Studio in accordance with Exception to Section 140 6 a 3T For details refer NA7 of 2013 Nonresidential Appendices e Kitchen Exhaust Systems with Type Hood Systems For details refer NA7 of 2013 Nonresidential Appendices e Fault Detection and Diagnostic Systems this is a mandatory feature for systems with capacity of 54 000 Btu h and above e DHW Distribution Diagnostic Testing Duct System Leakage Diagnostic Testing Duct leakage testing for systems serving less than 5 000 ft2 of space that have ducts in un
48. are AirFoil Backwardlnclined ForwardCurved e Control Method The method used to control fan flow Options are Constant Volume VariableSpeedDrive Dampers and InletVanes Capacity and Power section e Flow Capacity The design air flow rate of the fan at design conditions This building descriptor sets the 100 percent point for the fan part load curve This input should be at least as great as the sum of the design air flow specified for each of the thermal zones that are served by the fan system For multiple deck systems a separate entry should be made for each deck e Flow Minimum The lowest flow rate rated for a fan e Position The position of the supply fan relative to the cooling coil 91 CBECC COM User Manual 2013 Version 1f e Modeling Method The method used to describe the design power consumption of a fan Software commonly models fans in three ways The simple method is for the user to enter the electric power per unit of flow W cfm This method is commonly used for unitary equipment and other small fan systems A more detailed method is to model the fan as a system whereby the static pressure fan efficiency part load curve and motor efficiency are specified at design conditions A third method is to specify brake horsepower at design conditions instead of fan efficiency and static pressure This is a variation of the second method whereby brake horsepower is specified in lieu of static pressure and fan efficiency The l
49. atter two methods are commonly used for VAV and other larger fan systems e Total Static Pressure The total static pressure drop across the fan at design conditions The total static pressure TSP drop includes the pressure drop across components both internal and external to an air handler It is important for both fan electric energy usage and fan heat gain calculations e Overall Fan Eff The efficiency of the fan at design conditions Overall fan efficiency includes belt drive and fan efficiency but does not include the efficiency of the fan motor e Motor Brake HP The design motor shaft brake horsepower of the fan The motor brake horse power is the power at the motor shaft including fan and drive efficiencies e Power Per Flow Ref The supply fan power in Watts per unit of flow in CFM e Fan Power Curve A part load power curve which represents the percentage full load power draw of the supply fan as a function of the percentage full load air flow Motor Information section e Position The position of the supply fan motor relative to the cooling air stream e Nameplate HP The nameplate HP of the fan motor e Type Defines if the motor is open or closed e Pole Count The number of pole electromagnetic windings in the motor s stator and used to assign MotorEfficiency Poles are always paired so PoleCount is always a multiple of 2 e Efficiency The efficiency of the motor serving a fan 92 CBECC COM User M anual 20
50. ccess this screen right click on Building and scroll down to Create Then click ExternalShadingObject Make selections in the Create ExternalShadingObject dialog box and click OK Exterior Shading Object Data Currently Active Shade Test Window Shade Mi Shade Name Test Window Shade TransSchRef OpqShdglTrans Sch vi SolRefl 0 100 VisRefl 0 100 Input summary for Exterior Shading Object Data screen e Currently Active Shade The name of the currently selected shade e Shade Name The name or description used to identify the shade e TransSchRef The schedule when the shade is in operation e SolRefl The fraction of solar energy reflected by the shade e VisRefl The fraction of visible light reflected by the shade 60 CBECC COM User Manual 2013 Version 1f Door Construction Data Screen To access this screen under Project name right click on DoorConstructions and scroll down to Create Then click DoorConstruction Make selections in the Create DoorConstruction dialog box and click OK Door Construction Data Currently Active Door Construction NACM_ Door Name NACM_ Door Type InsulatedSingleLayerSectionalMetal Cert Method NFRCRaed GlassArea pl Frame Pl GlassPane pl Open pl UF actor 0680 Btu h F ft2 Input summary for Door Construction Data Currently Active Door Construction The name of the currently selected door construction Name The name or descripti
51. clude o No economizer Fixed outside are fraction at the system s design outside air flow when the system fan runs o Fixed dry bulb The system shifts to 100 percent outside air and shuts off the cooling when the temperature of the outside air is equal to or lower than the supply air temperature o Differential dry bulb The system shifts to 100 percent outside air when the temperature of the outside air is lower than the return air temperature but continues to operate the cooling system until outside air temperature reaches the supply air temperature o Differential enthalpy The system shifts to 100 percent outside air when the enthalpy of the outside air is lower than the return air enthalpy but continues to operate the cooling system until the outside air enthalpy reaches the supply air enthalpy o Differential enthalpy and dry bulb Utilizes combination of both the DifferentialDryBulb and DifferentialEnthalpy economizer control strategies e Integration Specifies whether or not the economizer is integrated with mechanical cooling Options include o Nonlntegrated The system runs the economizer as the first stage of cooling When the economizer is unable to meet the load the economizer returns the outside air damper to the minimum position and the compressor turns on as the second stage of cooling o Integrated The system can operate with the economizer fully open to outside air and mechanical cooling active compressor running simul
52. clude sensible and or latent components For data centers this includes transformers UPS PDU server fans power supplies etc Schedules drop down box Reference to a schedule that describes fraction of process electric use on an hourly basis RadFrac The fraction of radiant heat gain to a space based on appliance energy use LatFrac The fraction of latent heat gain to a space based on appliance energy use LostFrac The fraction of heat lost to the exterior is based on appliance energy use RefrigPwrDens The energy consumption of commercial refrigeration equipment in a space expressed in watts per square foot of space floor area Commercial refrigeration EPD is used for walk in freezers walk in coolers and refrigerated casework Other 31 CBECC COM User Manual 2013 Version 1f equipment such as Plug in coolers vending machines and plug in refrigerators should be accounted for in receptacle loads Schedules drop down box Reference to a schedule that describes fraction of refrigeration use on an hourly basis Elevator Count The number of individual elevators within the space Schedules drop down box The use of an elevator represented by a 24 hour schedule fraction of density associated with the occupancy type selected from the Area Category Method or Complete Building Method in ACM Appendix 5 4B LostFrac The fraction of heat lost to the exterior based on appliance energy use Fraction convective sensible is typically equa
53. conditioned space Refer to NA2 for field test details To claim the prescriptive required leakage level 696 or lower the tests in Reference Appendix NA2 must be completed Otherwise a higher default level is assumed in the compliance model e Low Leakage Air handling Unit verification Checklist for Compliance Submittal CBECC Com will produce the Certificate of Compliance for the Nonresidential Performance Compliance Method NRCC PRF 01 E which meets the requirements of a compliance submittal Note Please check Compliance Statement to make sure that the version you are using has been certified by the California Energy Commission to show compliance with California s 2013 Building Energy Efficiency Standards Sample Compliance Documentation To be updated 104 CBECC COM User Manual 2013 Version 1f Compliance Statement CBECC Com 2013 v1f may not be used to show compliance with California s 2013 Building Energy Efficiency Standards Related Publications The following documents provide the basis for compliance with the 2013 Standards 2013 Building Energy Efficiency Standards http www energy ca gov 2012publications CEC 400 2012 004 CEC 400 2012 004 CMF pdf 2013 Nonresidential Alternate Calculation Method Reference Manual http www energy ca gov 2013publications CEC 400 2013 004 CEC 400 2013 004 CMF pdf 2013 Nonresidential Compliance Manual http www energy ca gov 2013publications CEC 400 2013 002 CEC 400 2013
54. curately assigned as exterior or interior surfaces e Assign all Spaces to Thermal Zones 10 CBECC COM User Manual 2013 Version 1f e Additionally you may wish to give the spaces and zones meaningful names e g as they appear on the building floor plans Detailed tutorials for creating building geometry can be found at the following link http openstudio nrel gov sketchup plug tutorials Figure 6 below shows an example of a two story building created with the OpenStudio plug in pot ilaia Ei FE E SSSR CLMB OT erie eee Be SAT WADED aF J i s D Figure 6 Example Building Created With the OpenStudio Plug In Exporting the Model to SDD XML Once the building geometry has been created export to SDD XML The export function is located in the Plugins menu refer to Figure 7 below To access this menu click Plugins Export Export SDD Model Save the XML file to your project folder or other desired location 11 CBECC COM User Manual 2013 TE 9t g Edt View Camera Draw Tooli Window BUAT Hel PS eS ee a d CNN BLESI c OpenStudio UterSeipty mw boen aana Qe ET d 3 Neer Snadeng Surface Group Preferences Help Check For Update New Openstudio Model New OpenStudio Model From Tarnplate Open Openstudra Model i Save OperStudio Model Save CpenStudic Madel As pene Export Export CpenStudio Modat New Space Expat Uritranslubed EnergPlus df Ex
55. d in the analysis e The Original User Model e The Proposed Design Model e The Standard Design Model Figure 2 below shows the organization of the XML file containing details for each of the three analysis models v SDDXML xmins xsi http w w w w 3 org 2 001 XM RulesetFilename file CEC 2013 NonRes bin Model Name User Input Model Name Proposed Model Name Standard Figure 2 AnalysisResults XML Three Analysis Models Figure 3 shows an example of the analysis output results for the Proposed Model The EUseSummary tag contains annual TDV energy results for each end use which are reported in the Basic Output Results screen shown in Figure 1 The EnergyUse tag shows a detailed energy consumption summary for each building end use The data includes total TDV energy consumption total site energy consumption and a breakdown of TDV and site energy by each fuel type for that end use CBECC COM User Manual 2013 Version 1f IlUUSEIZ LUCA 7 7 LILI FI Enduse12 index 3 276 7 Enduse12 zoneuMLHsLoaded index gt 1 ZoneUMLHsLoaded vy SDOXML xmins xsi httpi www w3 org 2001 XMLSche lt ZONEUMLHS indexs 8 clg e htg e Common Restroom zn clg e htg RulesetFilename file CEC 2013 NonRes bin 2564 Common Mech Elec zn clg 67 htg e y 7 Wingi Sidel zn clg e htg e Wingl Corridor zn gt Model Name User Input Clg 12 htg 8 Wingl Side2 zn clg 6 htg e v Model Name Proposed Com
56. dc Or Jed eere WN F O pszBEMBasePathFile doesn t exist pszRulesetPathFile doesn t pszSimWeatherPath doesn t pszDHWDLLPath specified but doesn t Invalid project log file name too long Error writing to project log Building model input project file not found Error reading initializing model input project file Errors encountered evaluating input model defaulting rules Errors encountered evaluating input model defaulting rules multiple times Error s encountered performing required data amp numeric range checks Error s encountered checking input model for simulation compatibility Error s encountered checking input model for code requirements CBECC COM User Manual 2013 Version 1f 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 Error encountered initializing weather file locations and or names Error creating or accessing the analysis processing directory Error generating Proposed Sizing model Error generating Proposed final model Error generating Standard Sizing model Error generating Standard final model Error initializing Standard Sizing model Error initializing Standard final model Analysis aborted user chose not to overwrite SDD XML file Error Unable to write SDD XML file Error s encountered simulating Proposed model Error s encountered simulating Standard Sizing model Error s encountered simulating
57. deeds ale beret o etch 47 Schedules Days Data Daily SEFGer 2 ier sida REI E RM MEtE SI COPINES REL RO IDEO IAE 49 Construction Assembly Data SCEeeH ever eesshet Gelade ed Di vovit esr odd oe Doe ef D td e eo TNT seid 51 Construction Assembly Data Screen Compatible Surface Roof eese 53 Construction Assembly Data Screen Compatible Surface UndergroundFloor 54 Material Data Single Layer Scree iss dies c sd b t tni Ces ER dico Eo usd ebbe Leti ture vrac uod 55 Materials Data Single Layer Screen Category Concrete eese 56 Materials Data Composite SCFeern oues coax e ri re a pa eve rav etx EY RU CERE VR CERRAR NV ERES 57 Fenestration Construction Data SCreen ccsccsssccssccessccessccessccsscceseccessesesscsaseseessessesassenaesenes 58 Exterior Shading Object Data Screensaver cb tta edel ed cu evt veu usibus UU RA RR 60 Door ohstruction Data Screensaver EH E deeds ISO P ades I P EIU HAE 61 Space Function Defaults Data Screen e canta ise cites ors bt to Aes 62 Eumipnalres Data SCC CU esso vant b ora pas tutte pra al apo Renta sou bane an al na au VER UD UM S alpes Uieediaiirs 65 Organization ot the Mecharical Tabs ee oi ratas enia eue ooa Dep intu pae UoE ei eaae sadadmodnedaat Gale toaeidareioase 66 Organization of the Mechanical Tab continued nennen 67 Mechanical Input Seres n Detalls xc sabua m ete eter ciu us bua vedi te ober oup I PEU M EL ORUD PUEDE 68
58. dential Building Energy Efficiency Standards This user manual for CBECC COM 2013 was written to accompany beta test versions of the software released starting in June 2013 This user manual provides detailed descriptions of the software program s major features It is a good idea to review the Quick Start Guide for CBECC Com 2013 before using the program for the first time or if you have questions while using the program Additional Help features will be added to future versions of the program Calculate the annual energy use for both the Proposed Design and the 2013 Standard Design of typical non residential buildings The feature set of CBECC Com is listed in the section Software Capabilities Energy Commission Approval TBD Software Capabilities The CBECC Com software s scope features and capabilities are listed below Scope 1 Newly constructed buildings 2 CBECC Com will produce results of the performance tests described in the 2013 Title 24 Nonresidential ACM Reference Manual 3 The 2013 Standards ruleset and rules processing software have the capability to be included in third party compliance software using Dynamic Linked Libraries DLLs and includes ruleset encryption to lock the 2013 Standards ruleset Site Building 1 Include identifying information 2 Include other general information required for compliance forms 3 Include location information 4 Identify climate zone and weather design day files from the project s
59. ding and all its elements using a drawing tool in this case SketchUp with the OpenStudio plug in This approach accurately represents a building and its elements in the 3 dimensional form Spatial relationships and properties of the building surfaces such as areas orientation and tilt are automatically calculated the 3 dimensional drawings The Simplified Geometry approach on the other hand defines the properties areas orientation tilt etc of the building surfaces within the CBECC Com interface but the spatial relationship between surfaces is not defined Description of the Simplified Geometry approach can be found in subsequent sections of the manual e After building geometry has been created the remainder of the User Model building inputs is entered in the CBECC Com user interface e The compliance analysis is launched within the CBECC Com user interface When the analysis is launched CBECC Com automatically generates the Proposed Design model and the Standard Design also referred to as the Baseline Design model in SDD XML format e The SDD XML files are translated by the OpenStudio Translator to EnergyPlus IDF files This process is automated by CBECC Com and requires no intervention by the users e The IDF files are be simulated by the EnergyPlus v8 0 engine Three simulations occur o The Proposed Design annual simulation to calculate annual energy and TDV energy consumption CBECC COM User Manual 2013 Version 1f o The Standard D
60. e Coef1 The constant coefficient in the equation Coef2 The linear coefficient in the equation Coef3 The quadratic coefficient in the equation Coef5 The cubic coefficient in the equation MaxOut The maximum allowable output value optional MaxVar1 The maximum allowable value for the independent variable MinOut The minimum allowable output value optional MinVar1 The minimum allowable value for the independent variable 101 CBECC COM User Manual 2013 Double Quadratic Curve Data Screen Double Quadratic Curve Data ently Active Double Quadratic Curve ChirWtrPosDispPathAAllORatia fTchwsTcw Name Coef1 Coet Coef3 MaxOQOut MaxVar1 MinQut MinVar1 ChlrWtrPasDispPathAAllORatio fTchwsTewsS 0 36744001 Coef1 0 00583700 0 03708200 Coef2 0 00004900 0 00043400 Coef3 0 00027400 pO Maxva2 E EE MinVa2 The double quadratic curve consists of two independent variables and three coefficients for each variable The minimum and maximum values for the independent variable can be specified as well as the minimum and maximum output of the performance curve Out Coef1 Coef1 Coef2 Var1 Coef2 Var2 Coef3 Var1 2 Coef3 Var2 2 Input Summary e Currently Active Double Quadratic Curve The name of the active double quadratic curve e Name The name of the double quadratic curve e Coef1 The constant coefficient in t
61. e This includes the loads for lamps and ballasts Schedules IntPDReg Reference to a schedule that describes the fraction of lighting use on an hourly basis Fraction to Space IntPDReg Fraction of regulated interior lighting heat gain going to space air Radiant Fraction IntPDReg Fraction of regulated interior lighting radiant heat gain going to space surfaces IntPDNonReg Total non regulated connected lighting power density for all interior lighting systems in a Space This includes the loads for lamps and ballasts Schedules IntPDNonReg Reference to a schedule that describes the fraction of lighting use on an hourly basis Fraction to Space IntPDNonReg Fraction of non regulated interior lighting heat gain going to space air Radiant Fraction IntPDNonReg Fraction of non regulated interior lighting radiant heat gain going to space surfaces RecptPwrDens The usage of electrical devices plugged into receptacles in a space based on the occupancy type Schedules RecptPwrDens Reference to a schedule that describes the fraction of receptacle use on an hourly basis ProcElecPwrDens Process electrical power density resulting from an activity or treatment not related to the space conditioning lighting service water heating or ventilating of a building as it relates to human occupancy Process load may include sensible and or latent components For data centers this includes transformers UPS PDU server fans power supplies
62. e air delivery rate at design conditions For uncontrolled terminal units describes the design air flow rate provided to zones when the system is on For VAV systems specifies the maximum air flow delivered to the zone by the terminal unit Min Primary Flow The minimum air flow rate of variable volume terminal units Max Heating Flow The maximum primary air flow to the terminal in heating mode 93 CBECC COM User Manual 2013 Version 1f e Reheat Ctrl Method The air temperature control strategy for VAV reheat box in heating mode Options available are Single Maximum and Dual Maximum o Single Maximum The airflow is set to a minimum constant value in both the deadband and heating mode The minimum airflow setpoint is typically 30 to 50 percent of maximum This control mode typically has a higher minimum airflow than the minimum used in the dual maximum below resulting in more frequent reheat o Dual Maximum Raises the SAT as the first stage of heating and increases the airflow to the zone as the second stage of heating as follows 1 The first stage of heating consists of modulating the zone supply air temperature setpoint up to a maximum setpoint no larger than 95 F while the airflow is maintained at the deadband flow rate 2 The second stage of heating consists of modulating the airflow rate from the deadband flow rate up to the heating maximum flow rate 50 percent of design flow rate 94 CBECC COM User Manual 2013 Version 1
63. e of the orientation of a planar surface The azimuth of any planar building surface element is measured in the plane upon which the building sits the base plane Itis the angle measured clockwise between the true North vector and the outward pointing normal to the building surface element The azimuth of a North facing building surface is thus O degrees Units degrees Cardinal orientation of north south east and west can be derived from the Azimuth Solar Absorbance The fraction of the solar energy absorbed by the wall Thermal Absorptance The fraction of infrared energy absorbed by the wall Visible Absorptance The fraction of visible light absorbed by the wall 39 CBECC COM User Manual 2013 Version 1f Subsurface Data Window Screen To access this screen under SubSurface Data Window double click Subsurface Data Window Data Currently Active Window OS SubSurface 13 vi Window Mame OS SubSurface 13 Fen Construction Win Fixed DblArg AlumBrk Tint LowE Window Area 1929 t2 Input summary for the SubSurface Window Data e Currently Active Window The name of the currently selected window e Window Name The name or description used to identify the window e Fen Construction Fenestration Construction reference for a window e Window Area Calculate Area of each window 40 CBECC COM User Manual 2013 Version 1f Sub Surface Door Data Screen To access this screen right click Surface
64. e portion of the floor area that gets less high but still useful daylighting from a window Secondary sidelit daylit area is defined as a band beyond the primary daylighted area that extends a distance double the distance from the floor to the top of the window and width equal to window width plus 0 5 times window head height wide on each side of the window opening Daylighting Control Positions Each daylit area type Skylit Primary Sidelit and Secondary Sidelit is automatically assigned a daylighting control position which controls how the space lighting responds to the daylight illuminance measured at the control position Each daylighting control position utilizes the following inputs Daylighting Controls Identifies the presence of active daylighting controls associated with the Daylighting Control Position Controlled Power The total lighting power Watts controlled by dayighting controls associated with the Daylighting Control Position Controlled Fraction The total fraction of the space lighting power controlled by daylighting controls associated with the Daylighting Control Position Illum Set Point The design illuminance for the daylit area associated with the Daylighting Control Position Lighting controls are simulated so that the illuminance at the reference position is always maintained at or above the illuminance setpoint Ref Position The position of the daylight reference points within the daylit space ident
65. ed Power Whether this lighting system s power is Regulated vs Non Regulated Defaults to True regulated e SchRef Reference to a unique Schedule Name of interior type for association with an interior lighting system e Pwr Luminaire power taking Count into account e DaylitAreaType The origin of the daylight e LumMntgHgt The Luminaire Height of an IntLtgSys only necessary for Tailored Method Baseline General and Additional Lighting Power Allowances Assumed by default to be the same as the space floor to ceiling height e LumRef 1 Whether or not first luminaire is assigned e LumRef 2 Whether or not second luminaire is assigned e LumCnt 1 Luminaire count e LumCnt 2 Luminaire count e HtGnSpcFrac Fraction of interior lighting heat gain going to space air e HtGnRadFrac Fraction of interior lighting radiant heat gain going to space surfaces 37 CBECC COM User Manual 2013 Version 1f e PAFCredType Selection of PAF Credit Type allows the software to apply the power adjustment factors PAF which represents the percent reduction in lighting power that will approximate the effect of the control Models account for such controls by multiplying the controlled watts by 1 PAF e PAF Power adjustment factors PAFs represent the percent reduction in lighting power that will approximate the effect of the control Models account for such controls by multiplying the controlled watts by 1 PAF e TailoredMthdAl
66. ed to start combustion in fuel fired furnaces e Pilot Fuel Input The fuel input for a pilot light on a furnace 90 CBECC COM User Manual 2013 Version 1f Fan Data Screen Fan Data Currently Active Fan BaseSys5 Fan Name BaseSys5 Fan Component Qty 1 Classification Centrifugal v Centifugal Type AirFoil Control Method VariableSpeedDrive v Capacity and Power For single system terminal if Component Qty gt 1 Motor Information Flow Capacity 10 290 cfm Position InAirStream Flow Minimum 3 904 cfm Nameplate HP 15 000 hp Position DrawThrough Type Open Modeling Method StaticPressure Pole Count 4 Total Static Pressure 4 000 inches H20 Efficiency 0 924 Overall Fan Eff 0 620 Motor Brake HP 10 462 hp Power Per Flow Ref 0 758 Wicfm Fan Power Curve none E Input Summary e Currently Active Fan The name of the currently selected fan e Name The name of the fan e Component Qty The number of duplicate systems represented by the current system The number of duplicate systems can only be 1 when all attributes of the system are the same If Count is specified to be gt 1 all parameters capacities power etc should be specified for the single piece of equipment The ruleset applies multipliers for the final simulation e Classification Fan classification based on centrifugal or axial types e Centrifugal Type The type of blade type used in a centrifugal fan Options
67. esign sizing simulation to automatically determine HVAC system sizes for the Standard Design o The Standard Design annual simulation to calculate annual energy and TDV energy consumption Note the simulation processes are automated by CBECC Com and require no intervention by the users A progress indicator provides feedback to users on the status of the simulations e Results from the EnergyPlus simulations are automatically retrieved by CBECC Com and presented in a results summary screen This workflow is illustrated below in Figure 5 Additional details for each step in the workflow are also provided below Open Studio Detailed Geometry CBECC Com Simple Geometry CBECC Com OpenStudio EnergyPlus Results Figure 5 Workflow for Non Residential Compliance Analysis Where to Get Additional Software Tools Additional software tools can be found either within CBECC Com or at the following websites Trimble SketchUp v8 0 http www sketchup com download all OpenStudio SketchUp Plug In http openstudio nrel gov downloads CBECC COM User Manual 2013 Version 1f Note For CBECC Com vif you no longer need to install EnergyPlus 8 0 separately EnergyPlus executables are now included in the CBECC Com vif installer For previous versions please make sure EnergyPlus v8 0 is installed per the instructions below EnergyPlus v8 0 only to be downloaded when installing CBECC Com v1d Installation files may be downloaded fr
68. ew IA WirScrew Chiller Pump i iiis WirRecip Chiller Reciprocating e Chiller Data D cec WtrRecip Chiller Pump E ere lt P WirCentrifugal Chiller Centrifugal WirCentrifugal Chiller Pump CN fe ChW Primary Supply PrimarySupply pem fe ChW Primary Return PrimaryReturn ee fe ChW Secondary Return SecondaryReturn Ej CHW Secondary Supply SecondarySupply pee c Cn Secondary Pump Ert HotWater Loop HotWater E m ga Elec HW Bir HotWater fly Mech Gas HW Bir HotWater prom iiid gh Atmos Oil HW Bir HotWater HW Primary Supply PrimarySupply a fey HW Primary Return PrimaryReturn E qe HotWater Pump Ir CondenserVWater Loop CondenserWater Serer i amp Cooling Tower 1 OpenTower Mete i Cooling Tower 2 OpenTower lt Cooling Tower 3 OpenTower d fe CW Supply FluidSegment PrimarySupply ew amp Condenser Water Pump fe CW Return FluidSegment PrimaryReturn 66 CBECC COM User Manual 2013 Version 1f Organization of the Mechanical Tab continued Envelope Mechanical TaProject 040012 Offl rg CECStd fist SHWFluidSys1 ServiceHotWater J i CHW Loop ChilledWater fet HotWater Loop HotWater Building Data same info as Envelope tab ae Ir CondenserVWater Loop CondenserWater E n 8 Large Office 13 stories 498 589 cond f D E ett aH Basement CAV VAV E Hg Basement CAV AirSegment Supply
69. f Outside Air Control Data Screen Outside Air Control Data Currently Active OA Control BaseSys5 OACtrI v Name BaseSys5 OACtrI Component Qty 1 Supply AirSeg BaseSys5 SupAirSeg v Return AirSeg BaseSys5 RetAirSeg Outside Air For single system if Component Qty gt 1 Design OA Flow 3 572 cfm Schedule Method FollowHVAC Availability Delay OA During Start Up By 1 hrs Max OA Ratio 1 00 Min Fraction Sch nne o Economizer Controls Control Method DifferentialDryBulb Integration integrated v High DB Temp Lockout E Low DB Temp Lockout MEM F High Enthalpy Lockout poet Btu lb OK Input Summary e Currently Active OA Control The name of the currently selected outdoor air control e Name The name of the outside air control e Component Qty The number of duplicate systems represented by the current system The number of duplicate systems can only be 1 when all attributes of the system are the same If Count is specified to be gt 1 all parameters capacities power etc should be specified for the single piece of equipment The ruleset applies multipliers for the final simulation e Supply AirSeg Defines the supply air segment of the Air System e Return AirSeg Defines the return relief air segment of the Air System Outside Air section e OA Flow For individual systems not total if of systems gt 1 Design Flow The rate of outside air that needs t
70. f the system e LvgTemp Rated Rated chilled water leaving temperature e Status Defines if equipment is new existing or modified e Evap Inlet FluidSeg Name of the fluid segment connected to the evaporator inlet This is the chiller evaporator inlet connection to chilled water return e Evap Outlet FluidSeg Name of the fluid segment connected to the evaporator outlet The chiller condenser outlet connection to condenser water return e Evap Has Bypass Whether or not the chiller has Bypass e Cond Inlet FluidSeg Name of the fluid segment connected to the condenser inlet This is the chiller condenser inlet connection to condenser water supply e Cond Otlet FluidSeg Name of the fluid segment connected to the condenser outlet This is the chiller condenser outlet connection to condenser water return e Min Unload Rat Minimum unloading ratio e Min Part Ld Rat Minimum part load ratio e Cap fTempCrvRef The name of the performance curve which describes the chiller cooling capacity as a function of operating temperatures For water cooled chillers the temperatures are the leaving chilled water and entering condenser water temperature For air cooled chillers the temperatures are the leaving chilled water temperature and the outdoor air drybulb 71 CBECC COM User Manual 2013 Version 1f Fluid Segment Data Screen Fluid Segment Data Currently Active Fluid Segment ChW Primary Supply Name ChW Primary Supp
71. ghting Designer primary contact name input is optional e Title Lighting Designer primary contact title input is optional e Email Lighting Designer primary contact email input is optional e Phone Lighting Designer primary contact phone input is optional Energy Modeler Info section e Organization Energy Modeler Organization input is optional e Name Energy Modeler primary contact name input is optional e Title Energy Modeler primary contact title input is optional e Email Energy Modeler primary contact email input is optional e Phone Energy Modeler primary contact phone input is optional Project Data Screen Exceptional Conditions Tab To access this screen in the Envelope tab double click on the Project name and then click the Exceptional Conditions tab Building Model Data RC Project Data Design Team Exceptional Conditions Non Compliance Analysis lYes Yes Yes Yes Yes Yes Yes Yes Does your project contain roofing materials that are certified by the Cool Roof Rating Council Was comparison of window area to prescriptive requirements done using display perimeter for any facade Does any space in your building take credit for the general lighting exceptional allowances Does your project contain any spaces with no lighting installed Does the design illuminance setpoint in any space in your project fall below the lower limit specified in ACM Appendix 5 4 D
72. hanges hr Thrml Zn Vent Spec Method Maximum Occupancy 67 00 people 1 000 ft2 School Occup Sch gt 2750 Btu h person 2750 Btu h person Hot Water Use 0 58 gal h person School HotWtrSch i SHW No Recirc SHWSupply1 DHW Recirc none Electric Use Fraction to Space Radiant Fraction IntLPDReg 1 10 W ft2 School Lighting Sch v 061 075 IntL PDNonReg 000 W ft2 none 0 00 000 RecptPwrDens 050 W ft2 School Plugs Sch v ProcElecPwrDens 000 W ft2 School Plugs Sch i RadFrac 0 00 LatFrac 000 LostFrac 0 00 RefrigPwrDens 000 W ft2 School Plugs Sch i v Elevator Count 0 Elev Space School Elevator Sch Elevator Mechanical Systems LostFrac 0 00 Escalator Count 0 Escal Space School Elevator Sch Moving Sidewalks Included LostFrac 0 00 Natural Gas Use GasEqpPwrDens 1754 Btu h ft2 none amp ProcGasPwrDens 0 00 Btu h ft2 School Plugs Sch v RadFrac 0 00 LatFrac 0 00 LostFrac 0 00 Input summary for the Space Data screen Space Data tab Currently Active Space The name of the currently selected space Space Name The name or description used to identify the space Conditioning Type One of a list of categories that characterize the type of conditioning for a space IntLtg Spec Method The method for selecting baseline lighting and other loads for a space Multiplier The number of duplicate s
73. he Building Data Building Model Data ES Building Data Building Name Primary School FuncClassMthd lAreaCategoryMethod v Construction Phase NewConstruction v Building Azimuth 0 deg Above Grade Stories L3 Relocatable Public School Building Total Story Count s Total Living Units o0 ClgUnmetldHrs HS Total Floor Area 24413 f HtgUnmetLdHrs hE hrs Conditioned Volume 360 421 ft3 CoinDsgnClgl d EE Btu h Conditioned Floor Area 24413 ft2 CoinDsgnHtgL d n Btu h Nonresidential Floor Area 24413 ft2 NonCoinDsgnClgL d Po Btu h Residential Floor Area 4 ft2 NonCoinDsgnHtgL d _ Btu h Fenestration Floor Ratio frac Input summary for the Building Data screen e Building Name The name or description used to identify the building e FuncClassMthd The method of specifying functional area types Identifies whether functional area types will be assigned using the Complete Building Method or the Area Category Method At least 80 percent of the building area is required to be of the selected occupancy e ClgUnmetLdHrs The number of hours during the year when the space temperature is greater than the cooling setpoint temperature The cooling unmet load hours are used to determine if resizing is required e HtgUnmetLdHrs The number of hours during the year when the space temperature is below the heating setpoint temperature The heating unmet load hours are used to determine if resizing is required e C
74. he Project name expand Luminaires and double click the Recessed option Luminaire Data Currently Active Luminaire Recessed 4 x 4 Lamp T 8 Luminaire Name Recessed 4 x 4 Lamp T 8 Cat RecessedFluorescentLuminaireWithL Pwr 106 0 W HtGnSpcFrac Frac HtGnRadFrac NEN Frac Input summary for Luminaires e Currently Active Luminaire The name of the currently selected luminaire e Luminaire Name The name of the luminaire e Cat The type of luminaire used to determine heat gain distribution Options are Downlight Compact Flourescent Luminaire Downlight Incandescent Luminaire NonInCeiling Flourescent Luminaire RecessedFlourescentLuminairewithLens and RecessedFlourescentLuminairewithoutLens e Pwr Luminaire power The Connected power for a luminaire including lamp and ballast e HtGnSpcFrac Fraction of luminaire heat gain going to space air e HtGnRadFrac Fraction of luminaire radiant heat gain going to space surfaces 65 CBECC COM User Manual 2013 Version 1f Organization of the Mechanical Tab File Edit Ruleset View Tools Help n mie slelm Envelope Mechanical Project Data same info as Envelope tab a Project 040012 Offl ra CECStd as IE SHWFluidSys1 ServiceHotWater E f WaterHeater1 Storage 2 m ph sHWSupply1 PrimarySupply cicius fg SHVWMakeup1 MakeupFluid l icd f ChW Loop ChilledWater E WtrScrew Chiller Scr
75. he equation e Coef2 The linear coefficient in the equation e Coef3 The quadratic coefficient in the equation e MaxOut The maximum allowable output value optional e MaxVari The maximum allowable value for the first independent variable e MaxVar2 The maximum allowable value for the second independent variable e MinOut The minimum allowable output value optional e MinVari The minimum allowable value for the first independent variable e MinVar2 The minimum allowable value for the second independent variable 102 Version 1f CBECC COM User Manual 2013 Version 1f Special Features and Modeling Assumptions The Energy Commission is currently discussing the requirements for reporting Special Features in compliance software and will 1 update the ACM Reference Manual and 2 implement the updated requirements in a future version of CBECC Com before January 1 2014 The following modeling assumptions are made by CBECC Com Modeling Assumptions e CBECC Com uses the concept of three parallel sets of input for a single building modeled for compliance 1 The user model is the set of inputs entered by the user that reflect the actual specification of the as designed building 2 The proposed model is generated by the software and applies modeling constraints to user inputs when needed for use in compliance Values of prescribed inputs such as schedules or equipment power density are overridden with inputs to fol
76. he name or description used to identify the day schedule e Sch Type A list of schedule control mechanisms comprising of Fraction OnOff and Temperature e M 1am One hour occurrence between midnight and 1 a m e 1 2 am One hour occurrence between 1 a m and 2 a m e 2 3 am One hour occurrence between 2 a m and 3 a m e 3 4 am One hour occurrence between 3 a m and 4 a m e 4 5 am One hour occurrence between 4 a m and 5 a m e 5 6 am One hour occurrence between 5 a m and 6 a m e 6 7 am One hour occurrence between 6 a m and 7 a m e 7 8 am One hour occurrence between 7 a m and 8 a m 49 CBECC COM User Manual 2013 Version 1f e 8 9 am One hour occurrence between 8 a m and 9 a m e 9 10 am One hour occurrence between 9 a m and 10 a m e 10 11 am One hour occurrence between 10 a m and 11 a m e 11 noon One hour occurrence between 11 a m and noon e noon 1 One hour occurrence between noon and 1 p m e 1 2 pm One hour occurrence between 1 p m and 2 p m e 2 3pm One hour occurrence between 2 p m and 3 p m e 3 4 pm One hour occurrence between 3 p m and 4 p m e 4 5 pm One hour occurrence between 4 p m and 5 p m e 5 6 pm One hour occurrence between 5 p m and 6 p m e 6 7 pm One hour occurrence between 6 p m and 7 p m e 7 8 pm One hour occurrence between 7 p m and 8 p m e 8 9 pm One hour occurrence between 8 p m and 9 p m e 9 10 pm One hour occurrence between 9 p m and 10 p m e 10 11
77. ified by the Cartesian X Y and Z position of the reference point feet with respect to the overall project coordinate system Daylighting Control Parameters The following inputs describe the daylighting control algorithm for all of the controls located within a particular space DayltgCtriType The type of control that is used to control the electric lighting in response to daylight available at the reference point The options are o Stepped Switching Controls vary the electric input power and lighting output power in discrete equally spaced steps See At each step the fraction of light output is equal to the fraction of rated power o Continuous Dimming controls have a fraction to rated power to fraction of rated output that is a linear interpolation of the minimum power fraction at the minimum diming light fraction to rated power power fraction 1 0 at full light output o Continuous Dimming Off controls are the same as continuous dimming controls except that these controls can turn all the way off when none of the controlled light output is needed NumOfControlSteps Number of control steps For step dimming identifies number of steps that require fraction of rated light output and rated power fraction MinDimLtgFrac Minimum light output of controlled lighting when fully dimmed Minimum light fraction Minimum light output Rated light output 34 CBECC COM User Manual 2013 Version 1f e MinDimPwrFrac The minimum
78. in the Simplified Geometry approach does not define the spatial relationships between the various surfaces which can found in the building geometry generated using drawing tools such as SketchUp with the OpenStudio plug in Detailed Geometry approach Thus using the Simplified approach has inherent limitations for compliance analysis Limitations of using Simplified Geometry approach include not being able to model or take credit for certain features such as daylighting daylighting controls and shading from shading devices such as overhangs louvers etc Since no daylighting can be modeled using the Simplified approach projects submitting compliance documents for plan check need to make sure that their project meets all the mandatory and prescriptive daylighting requirements Please note that CBECC Com does not include the ability to mix the modeling inputs for building geometry using the Simplified and Detailed Geometry approaches so project teams must choose one of the two modeling paths when doing compliance analysis 16 CBECC COM User Manual 2013 Version 1f The CBECC Com User Interface Once the building geometry is input the model information is presented in the CBECC Com user interface The data is organized in a tree structure that is defined by the Standards Data Dictionary SDD data model The highest level of the tree is the Project The next level the child of the Project is the Building Beneath the Building level are two
79. ite ZIP code Envelope 1 Provide a comprehensive list of accurately described opaque materials 2 Combine materials into constructions 3 Describe fenestration performance properties via the simplified approach e g U value Solar Heat Gain Coefficient Visible Transmittance Apply exterior insulated constructions to demising surfaces Check that proposed exterior constructions meet mandatory U value requirements Remove user model building shades Retain user model geometry Adjust excess user model fenestration to standard design maximum WWR and SRR values ea SS vi CBECC COM User Manual 2013 Version 1f Lighting and Other Internal Loads 1 Replace user lighting systems with simple Light Power Density LPD values based on space function 2 Allow simple lighting inputs for LPD and lighting schedules without the need to specify details of an interior lighting system 3 Allow detailed lighting inputs for credits and allowances a Lighting Controls and associated PAFs b Area Category Lighting Allowances c Tailored Lighting Allowances 4 Replace user occupancy and equipment loads with ACM specified values 5 Replace user specified infiltration rates with ACM values 6 Replace user specified schedules with ACM schedules 7 Combine space level data into zones HVAC 1 Replace user specified HVAC system with baseline system a Except data center laboratory kitchens b Baseline sizing run is autosized c Baseline run hard sized using ba
80. jects The following SDD modeling rules for Multipliers must be followed 97 CBECC COM User Manual 2013 Version 1f o Allspaces that are combined into a thermal zone must have the same Multiplier o Spaces that are combined into a thermal zone cannot span multiple stories o All ThermalZones that are served by the same HVAC system must have the same Multiplier Thrtlg Range Thermostat throttling range is the number of degrees that the room temperature must change to cause the HVAC system to go from no heating or cooling i e space temperatures floating to full heating or cooling Desc A brief description of the thermal zone that ties the thermal zone to the building plans The description may identify the spaces that make up the thermal zone or can be other descriptive information Plenum Zone Name of the plenum zone if the thermal zone has a plenum space Primary Htg Clg System The name of the air or zone system that is the principal source of heating and or cooling for the thermal zone Only one unique AirSystem can be assigned to this field Ventilation section Ventilation Source The source of ventilation for a thermal zone Options are NotRequired Forced and Natural System The name of the air or zone system that provides ventilation air to the thermal zone This is by default the same system as the primary air conditioning system Specification Method Options are NoVentilation Maximum Sum FlowPerPerson FlowPe
81. l section e Temperature Crtl The method used to control the chilled water supply temperature The options are Fixed Scheduled OutsideAirReset and WetBulbReset o Fixed means that a constant temperature setpoint is used o Scheduled means that the temperature is adjusted based on a user specified schedule o OutsideAirReset means that the water supply temperature is adjusted based on the outdoor air temperature o WetBulbReset reset means that the water supply temperature is adjusted based on the cooling load e Fixed Supply Temp The supply water temperature setpoint for Fixed temperature control 69 CBECC COM User Manual 2013 Version 1f Chiller Data Screen Chiller Data Currently Active Chiller Chiller 4 Name Chiller 4 Status INew Type v i Evap Inlet FluidSeg g none Y Cond Type Fluid v PSESE xi Evap Outlet FluidSeg none Input Fuel Evap Has Bypass Rtd Capacity Btu h Cond Inlet FluidSeg none Cond Outlet FluidSeg none EntTemp Dsgn 64 0 F Rated F _ Min Unload Rat 0 150 f LvgTemp Dsgn 440 F Rated E iini a aa Min Part Ld Rat 0 150 frac Cap fTempCrvRef none Input Summary Currently Active Chiller The name of the currently selected chiller Name The name of the chiller Type The type of chiller being used based on the compressor type or absorption process The type of chiller selected from a list Cen
82. l to 1 0 minus fraction radiant minus fraction latent minus fraction lost Escalator Count The number of individual escalators or moving sidewalks within the space Schedules drop down box Reference to a schedule that describes the use of an escalator represented by a 24 hour schedule fraction of density associated with the occupancy type selected from the Area Category Method or Complete Building Method in ACM Appendix 5 4B LostFrac The fraction of heat lost to the exterior based on appliance energy use Fraction convective sensible is typically equal to 1 0 minus fraction radiant minus fraction latent minus fraction lost Natural Gas Use section GasEqpPwrDens Commercial gas power density is the average power density for all commercial gas equipment assuming constant year round operation Schedules drop down box Reference to a schedule that describes the fraction of gas equipment use on an hourly basis ProcGasPwrDens Process load is the gas energy consumption in the conditioned space of a building resulting from an activity or treatment not related to the space conditioning lighting service water heating or ventilating of a building as it relates to human occupancy Process load may include convective sensible and or latent components RadFrac The fraction of radiant heat gain to a space based on appliance energy use LatFrac The fraction of latent heat gain to a space based on appliance energy use LostFrac The
83. lity not valid following simulation 136 161 Error creating OpenStudio Model object Fatal error s occurred in EnergyPlus simulation EnergyPlus simulation did not complete successfully 181 User aborted analysis during building model simulation CBECC COM User Manual 2013 Version 1f Fixed and Restricted Inputs CBECC Com utilizes fixed and restricted inputs for both the Standard Design and elements of the Proposed Design as specified in the 2013 Nonresidential Alternative Calculation Methodology NACM Reference Manual A detailed summary of all fixed and restricted inputs can be found in the Nonresidential Alternative Calculation Method Reference Manual NACM http www energy ca gov 2013publications CEC 400 2013 004 CEC 400 2013 004 SD pdf Classification of Input Types in CBECC Com The user interface provides feedback on different types of inputs by displaying text in a variety of colors The following summarizes the meaning of each text color Typeofinput Text Color Undefined Black Data currently has no value in the building description The only time anything that is undefined is written or displayed in the user interface UI is when an enumeration list selection select from a drop down list or enter information includes a none entry which is displayed in this color Program Default Dark Cyan When an enumeration list is defined in the Enums txt file along with a valid default setting and no DEF
84. low the rules in the ACM Reference Manual 3 The standard design model is the baseline for comparison e The CBECC software applies modeling concepts to identify building model inputs that can be modified by the user from those that cannot O A prescribed input is a modeling input that is fixed for both the proposed design and the standard design baseline Examples of prescribed inputs are occupancy schedules and equipment power density EPD for a given space type A neutral input is a modeling input that is entered by the user but the value for the standard design baseline is set by the software to match the user input Examples of this type of input include climate zone and the building geometry excluding fenestration A user defined input is a modeling input that is entered by the user whose value is allowed to vary above or below the stringency level in the standard design Examples of this type of input include lighting power and HVAC equipment efficiency e The modeling rules and input restrictions are defined in detail in the ACM Reference Manual available on the California Energy Commission website e While most algorithms are handled automatically by the software the CBECC software employs a calculation algorithm for recirculating water heating systems in multi family water heating Refer to Residential ACM Appendix RE for calculation details e While refrigeration systems are not modeled explicitly in the CBECC softw
85. lowType Custom Lighting Power Allowance Type for Interior Lighting Specified via Tailored Method e AreaCatAllowType Custom Lighting Power Allowance Type for Interior Lighting Specified via Area Category Method e AllowBoardWd The Width ft of Chalk Display Board to which the Area Category or Tailored Allowance W ft is applied e AllowArea The Area ft2 of to which the Area Category or Tailored Allowance W ft2 is applied 38 CBECC COM User Manual 2013 Version 1f Exterior Wall Data Screen To access this screen under Space Data double click Surface Data Exterior Wall Exterior Wall Data Building Model Data ES Currently Active Exterior Wall OS Surface 170 Exterior Wall Name Construction Assm Exterior Roughness Wall Azimuth Solar Absorbance OS Surface 170 Base_CZ12 NonresMetalFrameWallU06 MediumRough 0 deg Interior Exterior 0 700 Thermal Absorptance 0 900 0 900 0 900 0 800 Visible Absorptance OK Input summary for the Exterior Wall Data screen Currently Active Exterior Wall The name of the currently selected exterior wall Exterior Wall Name The name or description used to identify the exterior wall Construction Assm Construction assembly reference construction name for an exterior wall input is optional A reference to a construction assembly Exterior Roughness The surface texture affecting convection Wall Azimuth A measur
86. ly Factor A factor applied to the autosized zone cooling air flow 98 CBECC COM User Manual 2013 Version 1f Linear Curve Data Screen Linear Curve Data Currently Active Linear Curve CurveLinear 1 B Mame Coe Coef MaxOQut MaxVar1 MinQut MinVar1 CurveLinear 1 E OF The linear curve consists of two coefficients and an independent variable The minimum and maximum values for the independent variable can be specified as well as the minimum and maximum output of the performance curve Out Coef1 Coef2 Var1 Input Summary Currently Active Linear Curve The name of the selected linear curve Name The name of the linear curve Coef1 The constant coefficient in the equation Coef2 The linear coefficient in the equation MaxOut The maximum allowable output value optional MaxVar1 The maximum allowable value for the independent variable MinOut The minimum allowable output value optional MinVar1 The minimum allowable value for the independent variable 99 CBECC COM User Manual 2013 Version 1f Quadratic Curve Data Screen Quadratic Curve Data Currently Active Quadratic Curve ChirAirscrollElRRatio faRatio Name ChlrAirScrollEIRRatio f Ratio Coef1 0 06369100 Coet2 0584887938 Coef3 0 35280239 MaxQut MaxVar1 MinQut MinVar1 The quadratic curve consists of three coefficients and an independent variable The mi
87. ly Type PrimarySupply SE no external source PriSegRef nane Input Summary e Currently Active Fluid Segment The name of the currently selected fluid segment e Name The name of the fluid segment e Type The type of fluid segment It is used to validate the connections between various FluidSys objects Options include PrimarySupply PrimaryReturn SecondarySupply SecondaryReturn MakeupFluid and Connector e Src The source of the Fluid Segment Available options are No external source and MunicipalWater e PriSegRef Refers to the segment that supplies fluid to a secondary segment Applicable to fluid loops subordinate to the primary loop secondary tertiary etc this property is used to define the inlet and outlet of secondary segment 72 CBECC COM User Manual 2013 Version 1f Pump Data Screen Pump Data Name Operation Speed Type Design Flow Rate Motor Eff Impeller Eff Pump Head Currently Active Pump ChW Secondary Pump v ChW Secondary Pump OnDemand VariableSpeed Y 1 314 8 gpm Minimum Flow Rate 394 4 gpm 0 945 0 600 75 0 ftH20 Nameplate Motor HP 90 0 hp Power 32 762 kW Power Per Flow Ref 24 9 Wigpm Pwr_fPLR Curve Name PumpVSDPwrRatio fGPMRatio Y Input Summary Currently Active Pump The name of the currently selected pump Name The name of the pump Operation The type of system the pump will be operating in Speed
88. main categories of data Envelope and Mechanical The Envelope data encompasses the geometry of the building the properties of the building s construction materials the spaces in the building and the thermal gains within each space The Mechanical data encompasses all of the air and water systems in the building which zones they serve and how they operate The Envelope and Mechanical data are input on two separate tabs in the user interface A detailed summary of the model hierarchy on each tab is presented below Each item on the model tree is an editable object A user can edit an object s properties in an input screen by double clicking it with the mouse or right clicking Edit on the main menu Additionally a user can create child objects by right clicking the parent and selecting Create and then clicking the desired child object Tip Input Units The input screens show the units for numerical inputs For example boiler efficiency is input as a decimal like 0 8 not as a percent 96 like 80 The latter gives heating energy 100 times too big For a detailed description of the software menus and toolbar please refer to the CBECC Com QuicksStartGuide pdf that can be accessed on the Help menu by clicking Quick Start Guide 17 CBECC COM User Manual 2013 Version 1f Organization of the Envelope Tab Fi 010012 SchSml CECStd CBECC Com 2013 0 ies File Edit Ruleset View Tools Help Digal 3 Envelo i pe Mechanical
89. me used for the project if one is applicable Analysis Type Type of analysis to be performed Run Title Title that appears on reports to identify this analysis input is optional Owner Info section Organization Building owning organization Contact Name Building owning organization primary contact name Title Building owning organization primary contact title Email Building owning organization primary contact email Phone Building owning organization primary contact phone Location section St Address Street address where the project is located City City where the project is located State State where the project is located 22 CBECC COM User Manual 2013 Version 1f e Zip Code ZIP code where the project is located Location and Weather File date defaulted based on this value e Climate Zone Climate zone e Weather Station California weather station e Latitude Building latitude e Longitude Building longitude e Elevation Building elevation File Management section e Creation The time and date of creation of the project file e Last Mod The time and date of the last revision of the project file e Last Run The time and date of the last analysis run of the project file Project Data Screen Design Team Tab To access this screen in the Envelope tab double click on the Project name and then click the Design Team tab Building Model Data ES Project Data Design Team Exceptional Conditions
90. mon Lobby zn clg e htg e Common Corridor zn clg e htg e gt Proj Wing2 Corridor zn clg 20e htg e Wing2 Side2 zn clg S1 htg wing2 Sidel Zn Seay Clg e htg e Common Office zn clg 1207 htg e A Eneravis Common Cafeteria zn ZOneUMLHs EnergyUse lt SimSummary index gt Successful 5e EnergyUse warnings SimSummary c EUseSumnary lt EnergyUse gt EnergyUse i kea EnergyUse Name Space Heating lt Name gt EnergyUse EnduseName Space Heating lt EnduseName gt EnergyUse ProposedTDV 61 6938 ProposedTDV EnergyUse PropElecEnergy 62417 3 PropElecEnergy gyu PropNatGasEnergy 1592 36 PropNatGasEnergy EnergyUse PropotherEnergy 6 lt PropotherEnergy gt EnergyUse PropTotalEnergy 15 2468 PropTotalEnergy EnergyUse PropElecTDV 48 9668 PropElecTDV PropNatGasTDV 12 127 PropNatGasTDV PropotherTOV 8 PropotherTOV Model Name Standard EnergyUse EnergyUse Figure 3 Analysis Output Results for each End Use Additionally full reports of all building inputs for each analysis model are echoed in the AnalysisResults XML file The organization of the input data follows the Standards Data Dictionary SDD data model structure Figure 4 illustrates the XML format of the Building data CBECC COM User Manual 2013 CSPCFUMCUETAUICS SpcrFuncDefaults gt SpcruncDefaults gt
91. n e Outside Lyr The material specified in the outside layer e Layer 2 The material specified in the second layer e Layer 3 The material specified in the third layer e Layer 4 The material specified in the fourth layer e Layer 5 The material specified in the fifth layer e Layer 6 The material specified in the sixth layer 52 CBECC COM User Manual 2013 Version 1f Construction Assembly Data Screen Compatible Surface Roof To access this screen under Project name expand ConstructAssemblies and double click Roof option Note Selecting Compatible Surface Roof prompts you to add additional inputs red box below Building Model Data E Construction Assembly Data Currently Active Cons Assembly Base CZ12 FlatNonresWoodFramingAndOthe v Name Base CZ12 FlatNonresWoodF ramin U Fetr 0 039 Btu h F ft2 Compatible Surface Rof Outside gt Inside Layers Outside Lyr Metal Standing Seam 1 16in Exterior Roughness MediumRough Layer 2 Compliance Insulation R24 86 Layer 3 nne ve Roof Surface Properties Field Applied Coating CRRC Properties Initial Aged Solar Reflectance 0 630 0 630 Thermal Emittance 0 850 0 850 Product ID OK Input summary for Roof Surface Properties e Field Applied Coating checkbox A flag to indicate if the roofing surface is from a coating applied on site or not e Solar Reflectance Initial The Initial Reflec
92. nce EnergyPlus Reporting Variables Reporting Interval Hourly v Site Thermal Zone HVAC Secondary v HVAC Primary HVAC Zone Input summary for the Non Compliance Analysis tab Auto Hardsizing Efficiency Input e Auto hardsize Proposed HVAC Components e Auto Populate Proposed HVAC Efficiencies Air side only e Design Flow Area e Design Flow Ton CBECC Com requires that user model HVAC equipment have all capacity and efficiency inputs entered For analysis that is not intended for compliance these inputs may not be known These inputs allow the user to activate rules of thumb to provide required equipment capacities and to tailor these inputs if desired However if the two boxes are checked the run results cannot be used to show compliance with the energy code 25 CBECC COM User Manual 2013 Version 1f EnergyPlus Reporting Variables e Site e Thermal Zone e HVAC Secondary e HVAC Primary e HVAC Zone These check boxes activate writing of designated output variables to special report files These output files are primarily intended for debugging of the rules and EnergyPlus translations but may be useful for simulation debugging as well These check boxes unlike the previous ones on this tab do not disqualify the run results from being used to show code compliance 26 CBECC COM User Manual 2013 Version 1f Building Data Screen To access this screen under the Project name double click on t
93. ng Geometry Using the OpenStudio Plug In for Trimble SketchUp 10 EXDOrt ine the Modelto SDO INI Mer c c TT 11 STARTING A NEW PROJECT ei tne irsn eo t rain tou aa E NaO 13 Importing Geometry into the CBECC Com User INterface cccccesecccessseccecesscccceeseceseeeceeseeceesenseeetas 13 Simplified Geometry Creating Building Geometry Using the CBECC Com Interface 15 THE CBECC COM USER INTERFACE 5 0e eoi e rper Feo braun a Sin pe Ee aUe eeu a ie DIpew aee dera cva sva Deu SUR eaa 17 Organization of the Envelope Ta si iie Hen Ere na to P Ca i ted va tees ees bea cpu Sive 18 Organization of the Envelope Tab continued sseeeeesseeeeneeennnnnennn nennen 19 Organization of the Envelope Tab continued sseeeeessseeeeeeeeennnnnennnnnn nennen enne nnns 20 Organization of the Envelope Tab continued sseeeeesssseeeenenenn nennen nnne nennen 21 Envelope Input Screen Detalls sias ecioc vedo e vas redet e dese o dab vence O EN 22 Project Data Screen Project Data Fa uec entes n i o nue sea te A uasa ee tete 22 Project Data Screen Design Team Tab cccccccsssscccccsssseccccceeeecccseeesecccseeenseeesseeueeeceeseageeeeeetegs 23 Project Data Screen Exceptional Conditions Tab eeeeseeeeeeennene eene 24 Project Data Screen Non Compliance Analysis Tab c ccssccccccssssecccec
94. ng efficiency of a direct expansion DX cooling system at AHRI rated conditions EER Code Minimum Code Minimum EER value EIR Input The cooling efficiency of a direct expansion DX cooling system described for simulation purposes Energy Input Ratio EIR is the inverse of the COP Performance Curves tab Cap fTempCrvRef A curve hat describes the adjustment of cooling coil capacity as a function of temperature Cap fFlowCrvRef Normalized curve that varies cooling capacity as a function of airflow which affects system latent capacity Used for EnergyPlus DX coil model only EIR frempCrv Normalized curve that varies full load efficiency EIR as a function of indoor coil and condenser conditions EIR fPLFCrvRef Normalized curve that varies full load efficiency EIR as a function of part load factor This curve type is specific to EnergyPlus EIR_fFlowCrv Normalized curve that varies full load efficiency EIR as a function of indoor coil flow This curve type is specific to EnergyPlus 83 CBECC COM User Manual 2013 Version 1f Cooling Coil Data Screen Direct Expansion Cooling Coil Data Performance Curves Currently Active Cooling Coil BaseSys5 CoilClg v Name BaseSys5 CoilClg Condenser Type Air Type IDirectExpansion Component Qty 1 Fuel Source Electric Input Code Minimum SEER EER 9 8 98 Capacity For single system terminal if Component Qty gt 1 EIR Num Cooling Stages 1 Tot
95. nimum and maximum values for the independent variable can be specified as well as the minimum and maximum output of the performance curve Out Coef1 Coef2 Var1 Coef3 Var1 2 Input Summary Currently Active Quadratic Curve The name of the active quadratic curve Name The name of the quadratic curve Coef1 The constant coefficient in the equation Coef2 The linear coefficient in the equation Coef3 The quadratic coefficient in the equation MaxOut The maximum allowable output value optional MaxVar1 The maximum allowable value for the independent variable MinOut The minimum allowable output value optional MinVar1 The minimum allowable value for the independent variable 100 CBECC COM User Manual 2013 Version 1f Cubic Curve Data Screen Cubic Curve Data Currently Active Cubic Curve VSDSprFanPwrRatio fCFMRatio m Mame a ng Coef3 Coefh MaxQut MaxVar1 MinQut MinVar1 VSDSprFanPwrRatio fCFMRatio 0 00310000 0 03310000 1 02680004 0 11280000 1 000 The cubic curve consists of four coefficients and an independent variable The minimum and maximum values for the independent variable can be specified as well as the minimum and maximum output of the performance curve Out Coef1 Coef2 Var1 Coef3 Var1 2 Coef5 Var1 2 Input Summary Currently Active Cubic Curve The name of the active cubic curve Name The name of the cubic curv
96. nt value in both the deadband and heating mode The minimum airflow septoint is typically 30 to 50 percent of maximum This control mode typically has a higher minimum airflow than the minimum used in the dual maximum below resulting in more frequent reheat o Dual Maximum raises the SAT as the first stage of heating and increases the airflow to the zone as the second stage of heating as follows 1 The first stage of heating consists of modulating the zone supply air temperature setpoint up to a maximum setpoint no larger than 95 F while the airflow is maintained at the deadband flow rate 2 The second stage of heating consists of modulating the airflow rate from the deadband flow rate up to the heating maximum flow rate 50 percent of design flow rate e Design Supply Air Temp Cooling The design cooling supply air temperature of single duct system or the cold duct of a dual duct system This is also the control setpoint for Fixed air temperature control e Design Supply Air Temp Heating The design heating supply air temperature of single duct system or the hot duct of a dual duct system This is also the control setpoint for Fixed air temperature control e Net Capacity Cooling Net Capacity of the Cooling System e Net Capacity Heating Net capacity of the Heating System e Net Capacity Supply Flow The capacity of the supply fan in cfm e Design Flow Area Air flow per sq ft of area for auto hardsizing the system e Design
97. o be delivered by the system at design conditions Minimum ventilation requirements specified by Standard 120 b 2 as the greater of 15 cfm person and the minimum ventilation rates specified in Appendix 5 4 For systems serving laboratory spaces the system shall be 100 percent outside air with ventilation rates determined by the Authority Having Jurisdiction e Schedule Method The method used to describe the minimum amount of ventilation outdoor air that is provided by the system e Delay OA During Startup By If the OAScheduleMethod is FollowHVACAvailability this positive integer value indicates the number of hours that the system outside air flow is zero during system start up 95 CBECC COM User Manual 2013 Version 1f e OA Flow For individual systems not total if of systems gt 1 Max Ratio The maximum ratio of outside air that a system can provided defined as a percentage of the design supply air Applies to systems with modulating outside air dampers Economizers for smaller systems 54 000 Btu h are assumed to have a restricted intake capacity e Min Fraction Sch A schedule that defines the minimum outdoor air flow rate as a fraction of total system air flow Economizer Controls section e EconoCtriMthd The method used to control the air side economizer An air side economizer increases outside air ventilation during periods when mechanical cooling loads can be reduced by increasing outside air flow The control types in
98. objects surfaces and their child objects by defining the characteristics that define that object in space without having to use any drawing tools such as SketchUp with the OpenStudio plug in The inputs to define the various building envelope components require the user to have available detailed take offs from the construction drawings for each of those components to be able to input into the building model For example a wall will be defined using area and azimuth whereas a roof will be defined using area azimuth and tilt Envelope Mechanical T Project Project 1 5 Building 1 story 100 cond t2 Er RH BuildingStory 1 E Schedules 3 ScheduleWeeks ScheduleDays gg ConstructAssemblies E Materials be E FenestrationConstructions DoorConstructions SpaceFunctionDefaults E Luminaires Create Exterior Wall ExteriorVVall Creation Option Create New Object ExteriorVVall Name Exterior Wall 1 Parent Component Space 1 OK Cancel Exterior Wall 1 Primary Datz Area m Azimuth Cancel Space 1 DirectlyConditioned 100 ft2 i Edit Rename Delete Copy Paste View Space Footprint Expand Create 15 InteriorLightingSystem DaylightingContro Ceiling ExteriorFloor Exterior Wall InteriorFloor InteriorWall Roof UndergroundFloor UndergroundWall ExternalShadingObject PolyLoop CBECC COM User Manual 2013 Version 1f The data used
99. oes the rated capacity of any HVAC equipment installed for your project not match the value used in the compliance analysis Is a supply fan pressure drop allowance in excess of 1 w g claimed for special filtration or other process requirements Are any HVAC systems certified to meet efficiency and water use requirements of the Western Cooling Challenge 24 CBECC COM User Manual 2013 Version 1f Input summary for the Exceptional Conditions tab It is required that all of the options on this screen are selected Yes or No as appropriate If any are left blank an error will result If any of the exceptional conditions apply to your project mark that item Yes The compliance forms will include guidance for the code reviewer to check the exceptional conditions for compliance Project Data Screen Non Compliance Analysis Tab To access this screen in the Envelope tab double click on the Project name and then click the Non Compliance Analysis tab This tab provides inputs for use in building analysis other than compliance Building Model Data EN Project Data Design Team Exceptional Conditions Non Compliance Analysis Run Title l P yVL Analysis Type Title24Compliance Auto Hardsizing Efficiency Input v Auto hardsize Proposed HVAC Components Design Flow Area 1 390 v Auto Populate Proposed HVAC Efficiencies Air side only Design Flow Ton 358 2 f checked the analysis cannot be used for complia
100. of slab on grade floor insulation e R Value Nominal R value of the underground floor slab 54 CBECC COM User Manual 2013 Version 1f Material Data Single Layer Screen To access this screen under Project name expand Materials and double click the Stucco option Material Data Currently Active Material Stucco 7 8 in E Mame Stucco 7 8 in ICC Eval Svc Rpt Num RefCnt Category Plastering Materials Cont Insulation Outside Roofs Waterprf Membrane FrmDpth selection Stucco 7 8 in vi SimpleR R Value F ft2 h Btu Thickness in Thermal Cond Btu h F ft Specific Heat Btu lb F Density Ib ft3 UK Input summary for Material Data screen single layer e Currently Active Material The name of the currently selected active material e Name The name or description used to identify the active material e Category The name or code for a type of material used as a layer in construction assemblies e Selection The material selected from the available options e ICC Eval Svc Rpt Num The ICC Evaluation Service Report number for a spray foam or other non standard insulating product e Cont Insulation Outside Roof s Waterprf Membrane checkbox Select if insulation is installed on the outside of the membrane completely e RefCnt Number of times this Material is referenced by ConsAssm objects e FrmDpth Depth in inches of composite layer cavity e SimpleR
101. oinDsgnClgLd Coincident Design Cooling Load e CoinDsgnHtgLd Coincident Design Heating Load e NonCoinDsgnClgLd Sum of all Thermal Zone Design Cooling Loads e NonCoinDsgnHtgLd Sum of all Thermal Zone Design Heating Loads e Construction Phase A list categorizing the construction phase of the project Options are Addition Alteration NewConstruction and Repair 27 CBECC COM User Manual 2013 Version 1f e Building Azimuth The angle between the model Y axis and True North measured clockwise from the Y axis from Degree e Above Grade Stories The number of above grade building stories This property is one determining factor for the baseline HVAC system type A floor is considered a Habitable Story defined in the Standards as a story that is at least 50 percent above grade e Total Story Count The total number of stories in a building Includes both above grade stories and any below grade stories e Total Living Units The number of independent residences within the building e Total Floor Area The total floor area conditioned and unconditioned of the building e Conditioned Volume The total building conditioned volume e Conditioned Floor Area The total building conditioned floor area e Nonresidential Floor Area The total building nonresidential conditioned floor area e Residential Floor Area The total building residential conditioned floor area e Fenestration Floor Ratio The area of fenestrations per flo
102. om the US Department of Energy DOE website http apps1 eere energy gov buildings energyplus energyPlus download cfm previous Note EnergyPlus v8 1 is the latest version however CBECC Com uses EnergyPlus v8 0 In order to download v8 0 you are required to set up a user account and will receive a password to use during the installation process Be sure to download v8 0 and keep a record of your installation password Note After logging in you are taken to the main download page for the current version of EnergyPlus On that page click on the link that says Download latest version of EnergyPlus and then select Windows 8 0 0 008 for Windows 32 bit or 64 bit depending upon your computer specification to download See the screenshot below Download Previous Versions of EnergyPlus Accept License Agreement Please choose the appropiate version amd plalTarm and accept tha licerise agreement below L get lhe soSwar 32 Bit Versus 64 Bit Energyelus s available m JZ brt and 54 bet versians Onh dawninad the amp 3 bil version d you Know you have a 64 bit versson of the Windows WinXP B3X Vista 53 Vmdoaws7 54 or Linux operating system For Macintosh an Intel Mac running version 10 7 or higher of Mac OS X is required The 32 bit version of EnergyPlus wall run on both 64 and 32 bit computers The amp 4 bit version requires a 64 bit computer Windows Macintosh Linux A B MI Bit Jz Hit Windres 7 1 0 036 EXE 30 3 MB Macintosh 7 0 0 03
103. on e Sub Type Property used to define rating conditions and efficiency requirements of system components Options available are Single Package and Split System e Control Zone A reference to the Thermal zone name where controls for the Air System are located e Description A brief description of the Air System that summarizes its essential characteristics e Availability Sch Name of the Availability schedule for the Air System e Night Cycle Ctrl The HVAC system control method when heating cooling and fan systems are scheduled to be Off For this control the space is controlled to the setback or setup temperature only this control is not equivalent to night purge control Options for Night Cycle Fan Control include CycleOnCallAnyZone CycleOnCallPrimaryZone CycleZoneFansOnly and StaysOff e Ventilation Ctrl Options are AverageFlow and CriticalZone 78 CBECC COM User Manual 2013 Version 1f e Dsgn OA Flow The design outside air flow of the AirSytem in cfm e Ctrl System Type The type of control system used for an HVAC system Applicable to multizone HVAC systems and their related equipment only This input affects the proposed design system specification for zone level controls supply air temperature reset controls ventilation controls and fan and pump static pressure part load curves e Reheat Ctrl The air temperature control strategy for VAV reheat box in heating mode o Single Maximum The airflow is set to a minimum consta
104. on used to identify the door construction Type The type of door Options are InsulatedSingleLayerSectionalMetal InsulatedSwingingMetal UninsulatedDoubleLayerMetal UninsulatedSingleLayerMetal UninsulatedSingleLayerRollupMetal WoodOther and WoodThick Cert Method The Certification Method CECDefaultPerformance or NRFCRated GlassArea Defines the percentage of the door that is glazed Frame Defines the frame type of the door GlassPane Defines the glass pane type of the door Open Defines the exterior door operation UFactor The rate of heat transfer of the door 61 CBECC COM User Manual 2013 Space Function Defaults Data Screen Version 1f To access this screen under Project name expand SpaceFunctionDefaults and double click Office Defaults Space Function Defaults Office Defaults Currently Active Space Function Defaults Mame Office Defaults Function Office Greater than 250 square feet in floor area schedule Group specify gt schedules Sensible Rate Latent Rate Occupancy mmm people 1 000 ft2 CIT Y mm Btu h person mm Btu h person Hot Water Use Gl gal h person Office HotWtr Sch Ventilation Flow s a cfm person amm cfm ft2 changes hr a Fraction to Space Radiant Fraction IntL PDReg wA Office Lighting Sch JEN EN IntLPDNonReg Wift2 m MP am m RecpPwDens wm Office Plugs Sch ProcElecPwrDens a W ft2 Office Plugs Sch E RadF
105. or area 28 CBECC COM User Manual 2013 Version 1f Building Story Data Screen To access this screen under Building Data double click on the Building Story Data ES Building Model Data Building Story Data Building Story Name Level 4 Story Multiplier Input summary for the Building Story Data screen e Building Story Name The name or description used to identify the building story e Story Multiplier Story multiplier This property is user specified for quickly multiplying the spaces and related thermal zones on each building floor 29 CBECC COM User Manual 2013 Version 1f Space Data Screen Space Data Tab To access this screen under Building Story Data double click Space Data E Building Model Data Space Data Daylighting Infiltration Currently Active Space Cafeteria Spc ti v Daylightable Area Total 2099 t2 73 Top 0 PrimSide 1171 SecSide 928 Space Name Cafeteria Spp Multiplier aay Thermal Zone Ref Common Cafeteria Zn Conditioning Type DirectlyCondiioned Fir to Clg Ht 14 8 ft Plenum Space Ref nne ve IntLtg Spec Method AreaCategoryMethod sss Floor Area 2 8597 ft2 Occupancy Class Nonresidential applicable to IntLigSys children V lime 42 220 t3 Function Defaults Cafeteria Defaults v Function DiningArea s Sehedug roug Restaurant e Ventilation Flow s 150 cfm person 050 cfm ft2 0 000 c
106. paces This value is used for reference only to default the multipliers from thermal zone within the data model Flr to Clg Ht The measurement of height from the top surface of the floor to the bottom surface of the ceiling in an enclosed space Floor Area Used as the measurement of area of the floor that is part of a building object and is calculated by multiplying the length dimension by the width dimension Volume The measurement of space or object calculated by multiplying the three dimensions of the space length width and height Thermal Zone Ref This is a reference to the thermal zone that serves a given space Plenum Space Ref This is a reference to the plenum space that serves a given space 30 CBECC COM User Manual 2013 Version 1f Occupancy Class The occupancy classification of the space Function Defaults Reference to a unique SpaceFunctionDefaults object name Function The area category occupancy type from Nonresidential Appendix 5 4A Schedule Group A type specifying occupancy categories used to determine schedules Ventilation Flow s The amount of outside air provided to a space during occupied hours divided by the floor area of that space Occupancy The areal density of people associated with a space expressed in people per 1000 square feet Hot Water Use The amount of energy required to provide hot water for each person in a space during occupied hours SHW No Recirc The solar hot water loop coming into the sp
107. part EnesqyPlus tat New Interior Partition Surface Group SR NE Maii New Daylighting Control sit tered New Muminance flap ___Export 300 Model New Glare Sensor Sarfisce Motcheng Set Attribute for Selected Spaces Create Spacer From Diagram Project Lease Geometry Inipector Surface Search Ird Tool Show Enron And Wamings Launch Openstudia Wina Renas Rendesing Animation SketchUp Tools Figure 7 Exporting the Model to SDD XML 12 Version 1f CBECC COM User Manual 2013 Version 1f Starting a New Project When CBECC Com is first started a dialog box appears with four options 1 Open Recent Project 2 Select an Existing Project to Open 3 Create a New Simplified Geometry Project 4 Start with a Blank Project One of the first two options must be used when working on a Detailed Geometry project The Open Recent Project option automatically selects the project that was being worked on the last time CBECC Com was open The Select an Existing Project to Open option requires browsing to the desired project If Select an Existing Project to Open is selected the default file type in the browser window is a cibd file However this can be changed to xml allowing the user to open an SDD XML file The second two options are essentially the same and are used when using the Simplified Geometry approach The Create a New Simplified Geometry Project option automatically walks the user through to setting up the initial p
108. pected average seasonal heat pump efficiency It is determined in accordance with AHRI Standards HSPF Code Minimum The Code minimum HSPF COP Input The heating efficiency of a heat pump at AHRI rated conditions COP Code Minimum The Code minimum COP EIR Input The heating efficiency of a heat pump heating coil described for simulation purposes Energy Input Ratio EIR is the inverse of the COP EIR Code Minimum The Code minimum EIR Comp OA Temp Limit The outside dry bulb temperature below which the heat pump supplemental heating is allowed to operate AFUE Input The Annual Fuel Utilization Efficiency AFUE is an indicator of expected seasonal furnace efficiency It is determined in accordance with DOE Test Standards AFUE Code Minimum The Code minimum AFUE Thermal Eff Input The heating efficiency of a furnace at AHRI rated conditions Thermal Eff Code Minimum The Code minimum Thermal efficiency Ignition Type The method used to start combustion in fuel fired furnaces Pilot Fuel Input The fuel input for a pilot light on a furnace HIR fPLRCrvRef Normalized curve that varies full load efficiency as a function of part load ratio Cap fTempCrvRef A curve that describes the adjustment of a heat pump heating coil capacity as a function of temperature EIR fPLFCrvRef Normalized curve that varies full load efficiency EIR as a function of part load factor This curve type is specific to EnergyPlus
109. rArea AirChangesPerHour and FlowPerZone Design Rate The quantity of ventilation air that is provided to the thermal zone at maximum occupancy The default value is the larger of 15 cfm times the design occupancy from Appendix 5 4A or the conditioned floor area times the applicable ventilation rate from Appendix 5 4A or Table 120 1 A of the Standards Control Method The method used to vary the minimum ventilation flow Ventilation airflow may be fixed at a specified rate or it may be reduced by the use of CO2 sensors or shut off based on an occupancy sensor Code Min Rate The minimum quantity of ventilation air that must be provided to the space when it is occupied The default value is the larger of 15 cfm times the design occupancy from Appendix 5 4A or the conditioned floor area times the applicable ventilation rate from Appendix 5 4A or Table 120 1 A of the Standards Thermostat Setpoints and Sizing Parameters section Thermostat Sch HVAC zone cooling temperature schedule The schedules specified in Appendix 5 4A and detailed in Appendix 5 4B is used as default Supply Air Temp The design cooling or heating supply air temperature for sizing zone system airflows Supply Air to Rm Temp Diff The temperature difference between the supply air temperature and room air temperature used for sizing system supply fans Supply Flow The air flow provided to the thermal zone at the design cooling or heating condition Applicable to sizing runs on
110. rac HER LatFrac aum LostFrac a RetigpwDens wm OficePluj Sch Natural Gas Use GasEqpPwrDens a Btu h ft2 nne ProcGasPwrDens mE Btu h ft Office Plugs Sch m RadFrac aum LatFrac aum LostFrac aum Infiltration InflVithd o e School Inf Sch a Bf F ep hr mile D hr2 mile2 Infiltration Model Coefficients Input summary for Space Function Defaults e Currently Active Space Function Defaults The name of the active Space Function Defaults e Name The name of the Space Function Defaults e Function The area category occupancy type from Nonresidential Appendix 5 4A e Schedule Group A type specifying occupancy categories used to determine schedules e Occupancy The people per area in the space e Hot Water Use The rate of domestic hot water used per person e Ventilation Flow s The rate of outdoor air supplied per person e Schedules Occupancy Reference to a schedule that describes the fraction of occupancy on an hourly basis e Schedules HotWater use Reference to a schedule that describes the fraction of hot water use on an hourly basis e Sensible Rate The rate of sensible heat released per person which is a function of activity e Latent Rate The rate of latent heat released per person which is a function of activity 62 CBECC COM User Manual 2013 Version 1f Electric Use section IntPDReg Total regulated connected lighting power density for all interior lighting systems in a Spac
111. rgy Commmissiofi ADDEOVS Suecia essemus eciat oue doses tat iN ER CUR usb n teo sete oce tds Eod n uus EpUHpEPSC s Due E a out Ee Cre LA vi Software CaDSbIlit IS 55er di reb Erd Cum e dba Ii N le e I eee eee vi STANDARD INPUT AND OUTPUT REPORTS 5 eoe ene obire ren rona oru neon us onse na anra open naa a oo ona ce Roy E aer eau 1 Basic O tput Results va did eu aite a db vta a debeo uua epe dr bue tetod eut peau taser eis aute ded aioe 1 Ccert licate of Compliance REDON udi ecd tope Pipe db taedas ete teur niet cod ttn dud iade Mavens odo tapefuf idit esie 1 Abialusis Results IV POs aces eos iie viter uuu deos set us dicatus Ere p uis iUe en duse ca Met ea Debut uc uds seu timE epu Ua EU EM 2 Log E ecc iuum I IM I MIELE LM Mite UM EIS 4 EnergyPlus Output Files oceano eoa S orco Doa e vn rebate dove au dem bac co ute nues ci de uoc Mete udo MUI eM PN UE DUC gud 5 EOF iee dlin cA ETE IT TE T LT 5 FIXED AND RESTRICTED INPUTS 1 ono e aO ao dn eoe quo ua oves Qo dee oce Loser Des Ice eects 7 Classification Of Input Types in CBECC COM iit occi re ai Rd e dean d Er Es to UP bU irene 7 PREPARING BASIC INPU T 5 rise a te e esset Ebo eescebucs Ebo ise oe LUE D eost o De ERU Uu 8 Building Geometry Detailed vs Simplified cene nennen nennen nenne 8 Where to Get Additional Software TOols cccccccccsssssssseecccccsaeessseeccccesseeussseecesccesssuuauseeesecessuagaaseeeseess 9 Creating Buildi
112. rmance Curves Tab Cooling Coil Data Performance Curves Currently Active Cooling Coil BaseSys5 CoilClg Cap fTempCrvRef nne amp Cap fFlowCrvRef nne EIR fTempCrv nne e EIR fPLFCrvRef Lnne EIR_fFlowCrv nne amp 86 CBECC COM User Manual 2013 Version 1f Input Summary Currently Active Heating Coil The name of the currently selected heating coil Name The name of the heating coil Type The type of heating coil Options are Resistance Furnace Heat Pump Hot Water and Steam Component Qty The number of components Condenser Type The type of condenser for heat pump heating systems Options include Air WaterSource Groundwater Source and GroundSource Inlet FluidSeg Defines the inlet supply side fluid segment of hydronic steam coils Outlet FluidSeg Defines the outlet return side fluid segment of hydronic steam coils Capacity section Num Heating Stages The number of heating stages for a furnace or heat pump heating coil This applies to heating coils with more than one stage of heating This system is typically a packaged unit with multiple heat pump compressors or a furnace with multiple firing rates Gross Capacity The gross heating capacity of the coil at AHRI conditions without adjustments for fan heat Design Flow Rate The design water volume flow rate gpm through the coil HSPF Input The Heating Season Performance Factor HSPF is an indicator of ex
113. roject parameters and building elements whereas the Start with a Blank Project starts a new project with a blank template Users can take either approach to modeling their project however the preferred workflow is to use the Detailed Geometry approach using OpenStudio creating building model geometry using SketchUp with the OpenStudio plugin OpenStudio includes an option for exporting an SDD file which CBECC Com can then open The Simplified Geometry approach is recommended for simpler buildings since this approach comes with certain limitations which could prevent the project from getting credit for certain efficiency measures included in the design For more information on the recommended workflow please view the tutorial videos at http bees archenergy com fag html Importing Geometry into the CBECC Com User Interface Launch CBECC Com On launch a window presents four startup options CBECC Com Startup Options f Open Recent Project Select an Existing Project ta Open f Create a New Simplfied Geometry Project C Start with a Blank Project p l l l Quick Start Guide Exit Click the radio button to Select an Existing Project to Open Alternatively if CBECC is already open then go to the File menu and click Open 13 CBECC COM User Manual 2013 Version 1f File Edit Ruleset View Tools Help New Ctrl N Open Ctrl O Save Ctrl S Save As Print Ctrl P Print Preview Print Setup
114. rves Tab Cooling Coil Data Performance Curves Currently Active Cooling Coil BasementCoilCooling X Cap flTempCrvRef none v Cap fFlowCrvRef none e EIR frempCrv nne v EIR fPLFCrvRef nome ve EIR fFlowCrv none 82 CBECC COM User Manual 2013 Version 1f Input Summary Currently Active Cooling Coil The name of the currently selected cooling coil Name Name of the cooling coil Type The type of cooling coil Options available are Chilled Water and Direct Expansion Inlet FluidSeg Defines the inlet supply side fluid segment of hydronic coils Outlet FluidSeg Defines the outlet return side fluid segment of hydronic coils Capacity section Gross Capacity Total The gross total both sensible and latent cooling capacity of a cooling coil or packaged DX system at AHRI rating conditions The gross capacity is the total cooling capacity without adjustments for fan heat Design Flow Rate The rate of water moving through the coil Condenser Type The type of condenser for a direct expansion DX cooling system Options available are Air Evaporatively Cooled Water Source Groundwater Source and Ground Source SEER Input The Seasonal Energy Efficiency Ratio SEER is a term used to describe the seasonal performance of a DX cooling system It is determined in accordance with AHRI standards SEER Code Minimum Code Minimum SEER value EER Input The cooli
115. sed Design b Proposed and Standard applies rules and simulates the Proposed and Standard Designs 3 CBECC Com Quick Start Guide available from the Help tab 4 CBECC Com software license available from the Help tab Documentation 1 2013 Title 24 Nonresidential ACM Reference Manual 2 EnergyPlus Technical Documentation 3 Meeting criteria in 2013 Nonresidential ACM Approval Manual e g CBECC Com User Manual 4 Issues Log available with each CBECC Com version release to document bugs identified and fixed viii User Manual Standard Input and Output Reports Version CBECC Com 2013 v1 0e A variety of input and output reports are available to review the compliance analysis These reports are described below Basic Output Results At the completion of the analysis the Basic Output Results screen shows the energy use summary for the building and each end use in terms of Site energy by fuel type and kTDV This output screen also reports a summary of unmet load hours a compliance margin for each end use and the whole building and an indication of whether the building passes or fails the compliance analysis See Figure 1 for an example of the Basic Output Results screen Energy Use Summary Proposed Design End Use Site MWh Space Heating Space Cooling 9 9 Indoor Fans 19 6 Heat Rejection Pumps amp Misc Domestic HW Lighting 79 Compliance Total 37 4 Receptacle 23 6 Process Process Ltg TOTAL 60 9 Unmet Load Hours
116. seeeecceesaeeseeceseeeneeeeeeeas 25 BUN GI Da Gal SCC Ehrens dass rte dmt biulidascd cpm vnu Mr itistdacu cp URN EET 27 Building StorvData SCLC Wisse o combo Ec pa ior SEOa e eecssa t Ecc aed sac sea aes sara ete A eani etd enu OE Ide 29 CBECC COM User Manual 2013 Version 1f Space Data Screen Space Data Tab ccscccccccssseecceeeeesecceeseeeseccceeeeeeccsseseeseccesseaueseceeeeauenseess 30 Space Data Screen Daylighting Tab iuo ea d od eb cesarea ta Led c vec d Ds d bp E 33 Space Data Screen nbiltration Fab sssessecub so ctor ao cuneta satt vua Senis tua era S Ur UE oe T qe nates comu tta etu Less D Ora OE 36 Interior Lighting System Data SCIeen uve e o ep eel ox cet vut cua pep isis asa ea dee E REUS 37 Exterior Wall Data Screen cien ER VEREOR MEER PES TbN SEMI M CPP Da ex pU edo pu TOP P SM WI OPOn ud L enu E brosub UR UE 39 Subsurtace Data Window SCEee e ier PEE REP P E PvE er ena lan sb x cotes E aes 40 Sub Surtace Door Data SCRE Cie n ott i eet at de aet aet tonc Cos cath not adotta ea eco 41 Pol MOO DD aike SECRET Bones toe E Ite u don nica ea ueste ccu s cte EE Rud 42 Surtace Data Interior Wall SCEGGTY siae o o tust reed reu bab uror p Ete Na 43 Roof Data Surface Data Scree aeinn EAEE EE TEE E 44 Underground Floor Data Surface Data Screen eessssssssssreessrrrreesrrrrressrrereesrsrrrressrrtreessereresseeeree 45 SCHEGUIES DII ESTRENO Oe 46 Schedules Weeks Data Weekly SCEBeb div duoc videt he eolore st eter
117. seline sizing results 2 Model user specified HVAC systems with user supplied sizing PSZ SZVAV PVAV VAV PTAC PTHP Fan coil units 4 pipe Baseboard heating Heating coils l Gas furnace ii Hot water iii Electric iV DX heat pump j Cooling coils z hoan T l Chilled water ii DX k Boilers l Hot water ii Gas iii Cil iV Electric V Natural draft vi Mechanical draft Chillers l Screw ii Reciprocating iii Centrifugal V Air cooled vii CBECC COM User Manual 2013 Version 1f V Water cooled m Chilled water loop pumping l Primary only ii Primary secondary n Economizers l Non integrated ii Integrated o Economizer Controls l Fixed temperature ii Differential temperature lil Fixed enthalpy iv Differential enthalpy Domestic Water Heating 1 Storage water heaters a Gas b Electric c Oil 2 Recirculating DHW systems for residential occupancies Output 1 Report simulation errors and warnings including useful descriptions 2 Report number of hours with setpoint not met by thermal zone 3 Report energy consumption by fuel and end use 4 Report TDV energy by end use 5 Report TDV energy comparison of Proposed and Standard Design including Compliance Margin 6 Generate Perf 1 summary compliance form Interface 1 Ability to access and modify parameters needed to simulate the above 2 Option to perform simulations in two modes a Proposed Only applies rules and simulates the Propo
118. t Data on either the Envelope or Mechanical tab of the user interface and that data will persist on both tabs Fluid System Data Screen Fluid System Data Currently Fluid System Chw Loop Name ChW Loop Availability Sch none Type Chilled Water v Description Design Supply Temp 44 0 Design Delta T 20 0 Control System Type DDC M Net Clg Capacity Btuh Loop Temperature Control Temperature Ctrl Fixed v Fixed Supply Temp 440 Input Summary e Currently Fluid System Name of the currently selected fluid system e Name The name of the fluid system e Type The type of fluid segment The type is used to validate the connections between various FluidSys objects e Description A brief description of the fluid system that summarizes its essential characteristics e Availability Sch The name of the schedule that determines when the hot water system is available to provide heating The system is not necessarily providing heating at all times it is available but if it is not available no heating will be provided e Design Supply Temp The design supply water temperature of the loop e Design Delta T The design supply water temperature delta T e Control System Type The type of control system used for the fluid system DDC or other This is used to specify part load curves for variable speed pumps e Net Clg Capacity 68 CBECC COM User Manual 2013 Version 1f Loop Temperature Contro
119. tance value from Cool Roof Rating Council CRRC testing of the roofing e Solar Reflectance Aged The Aged Reflectance value from Cool Roof Rating Council testing of the roofing e Thermal Emittance Initial The Initial Emittance value from Cool Roof Rating Council testing of the roofing e Thermal Emittance Aged The Aged Emittance value from Cool Roof Rating Council testing of the roofing e Product ID The unique identifier of the coating 53 CBECC COM User Manual 2013 Version 1f Construction Assembly Data Screen Compatible Surface UndergroundFloor To access this screen under Project name expand ConstructAssemblies and double click Underground Floor option Note Selecting Compatible Surface UndergroundFloor prompts you to add additional inputs red box below Construction Assembly Data Currently Active Cons Assembly NACM Slab Floor Z Name NACM Slab Floor Interior F Fetr Btu h F R Solar Absorbance 0 700 Thermal Absorptance 0 300 sible Absorptance 0 500 Outside gt Inside Layers SS S Compatible Surface UndergroundFloor Underground Floor Slab HeatedSlabOnGrade Insul Orientation FullylnsulatedSlab R Value R10 Input summary for Underground Floor Slab e Type The Underground slab type Available options are HeatedSlabOnGrade HeatedSlabBelowGrade UnheatedSlabOnGrade and UnheatedSlabBelowGrade e insul Orientation The location and extent
120. taneously even on the lowest cooling stage e High DB Temp Lockout The outside air drybulb temperature above which the economizer will return to its minimum position e Low DB Temp Lockout The outside air drybulb temperature below which the economizer will return to its minimum position e High Enthalpy Lockout The outside air drybulb temperature above which the economizer will return to its minimum position 96 CBECC COM User Manual 2013 Version 1f Thermal Zone Data Screen Thermal Zone Data Daylighting Currently Active Thermal Zone CorridorFir1 Thermal Zone Name CoriidorFIrf Thermal Zone HVAC Zone Count X Floor Area 1620 ft2 Type Conditioned X Zone Multiplier 4 Thrtlg Range 2 oF Description Plenum Zone none v Primary Htg Clg System lBaseAirSys5 1 v Ventilation Weighted Space Ventilation Inputs Ventilation Source Forced System BaseAirSys5 1 l 150 cfm person Specification Method Maximum v Design Rate 260 cfm 15 cfmift2 Control Method Fixed Code Min Rate 23 cfm 0 000 changes hr Thermostat Setpoints and Sizing Parameters Cooling Heating Thermostat Sch ResidentialCommon ClgSetPt si ResidentialCommon HtgSetPt si Supply Air Temp 55 0 F 950 Mz Supply Air to Rm Temp Diff 200 E o E Supply Flow e cfm EE cfm Sizing Factor 1 00 1 00 Input Summary e Currently Active Thermal Zone The name of the selected Thermal Zone e Name
121. ted according the Standard Design rules in the NACM Users can think of this model as a hypothetical version of their building if it was designed to just meet the mandatory and prescriptive requirements of the Title 24 Part 6 standards The workflow for preparing the User Model and performing compliance analysis is broken into several steps While the majority of the data input and the analysis procedures take place directly in the CBECC Com user interface additional free software tools identified below are used for some elements of the analysis The data is captured in a data model called the Standards Data Dictionary SDD SDD models are represented by an XML file format that can be read and written by CBECC Com CBECC Com converts this file to a CIBD file extension the software s native file extension e Building geometry and zone assignments can be generated within the CBECC Com interface or using the OpenStudio plug in for Trimble SketchUp v 8 0 Building Geometry Detailed vs Simplified Building geometry generated using the OpenStudio plug in is referred to as the Detailed Geometry approach and geometry generated using the CBECC Com interface is referred to as Simplified Geometry approach Using the OpenStudio plug in the geometry can be exported to SDD XML file format for input into the CBECC Com user interface The key difference between the two approaches is that the Detailed Geometry approach requires the user to draw the buil
122. tlyConditioned inu Wing2 Side2 Class Spc DirectlyConditioned Wing2 Side2 Class2 Spc DirectlyConditioned 2H Wing2 Side2 Class3 Spc DirectlyConditioned Additional spaces follow the 5 same structure tree For Help press F1 18 CBECC COM User Manual 2013 Version 1f Organization of the Envelope Tab continued pt 010012 SchSml CECStd CBECC Com 2013 File Edit Ruleset View Tools Help Bam s jase 2 ejee vl Envelope Mechanical c Schedules ooo School Occup Sch Fraction 1 School Lighting Sch Fraction ___ School Plugs Sch Fraction s d a School HVAC Sch OnOff pt 010012 SchSml CECStd CBECC Com 2013 File Edit Ruleset View Tools Help D aga db Emi em Envelope Mechanical SEEN amp Primary School 1 story 24 413 cond ft2 oe Schedules ScheduleWeeks j 2 mem School Occup Week Fraction 2 School Lighting Week Fraction School Plugs Week Fraction sd School HVAC Week OnOff yt 010012 SchSml CECStd CBECC Com 2013 File Edit Ruleset View Tools Help aj ajaja 2 Envelope Mechanical TalProject 010012 SchSm CECStd g Primary School 1 story 24 413 cond ft 9 Schedules a ScheduleWeeks 9 ScheduleDays School Occup WD Fraction l t School Occup Sat Fraction Muri School Occup Sun Fraction 2 School Lighting WD Fraction d School Lighting Sat Fraction 19 CBECC COM User
123. trifugal Reciprocating Scroll Screw Heat Recovery Heat Pump Single Effect Absorption Double Effect Absorption Triple Effect Absorption Note that the heat rejection process is not included in the Type descriptor See Condenser Type Condenser Type Method used to reject heat from the chiller Air cooled chillers use air to cool the condenser coils Water cooled chillers use cold water to cool the condenser and additionally need either a cooling tower or a local source of cold water Evaporatively cooled chillers are similar to air cooled chillers except they use a water mist to cool the condenser coil which makes them more efficient Input Fuel The form of the primary energy input to the chiller All chillers have a primary energy input along with electricity use for auxiliaries This input describes the form of the primary energy Options are Electricity Steam Hot Water Natural Gas or Oil Rtd Capacity The cooling capacity of the chiller at rating conditions The full load output of the chiller operating at rating temperatures and flows EntTemp Dsgn The chilled water return temperature at design conditions This temperature is used to size the chilled water components of the system EntTemp Rated Rated chilled water entering temperature 70 CBECC COM User Manual 2013 Version 1f e LvgTemp Dsgn The chilled water supply temperature at design conditions This temperature is used to size the chilled water components o
124. ttance The fraction infrared energy emitted by the coating e Product ID The unique identifier of the coating 44 CBECC COM User Manual 2013 Version 1f Underground Floor Data Surface Data Screen To access this screen under Space Data double click Surface Data Floor Underground Floor Data Currently Active Underground Floor OS Surace 17 m Underground Floor Name OS Surface 17 Construction Assembly NACM Slab Floor hi Input summary for Underground Floor Surface Data e Currently Active Underground Floor The name of the currently selected underground floor e Underground Floor Name The name or description used to identify the underground floor e Construction Assembly Construction assembly reference construction name for an Underground Floor input is optional A reference to a construction assembly 45 CBECC COM User Manual 2013 Version 1f Schedules Data Screen To access this screen under Project name expand Schedules and double click an option Schedule Data Currently Active Schedule School Occup Sch Name School Occup Sch Sch Type Fraction Ending Month Day Week Schedule i 12 31 School Occup Week 2 none ied Input summary for Schedules Data e Currently Active Schedule The name of the currently active schedule e Name The name of the schedule e Sch Type A list of schedule control mechanisms comprising of Fraction OnOff and Temperature e
125. ual 2013 Fenestration Construction Data Screen Version 1f To access this screen under Project name expand FenestrationConstructions and double click the FixedWindow option Fenestration Construction Data Building Model Data peg Currently Active Fenestration Cons Base AIICZ FixedWindowU36 Y Name Base AIICZ FixedWindowU36 Fenes Type VerticalFenestration Assm Context Manufactured v Cert Method NFRCRated Greenhouse Garden Window Skylt Glazing na e Skylt Curb Lma Product Type FixedWindow Oper Config a Panes l wa Frame na Win Divider n a Tint Fwa e Overall Product Center of Glass U Factor 0 360 Btu h F ft2 SHGC 0 250 Vis Trans 0 420 OK Input summary for Fenestration Construction Data e Currently Active Fenestration Cons The name of the currently selected fenestration construction e Name The name of the Fenestration construction e Fenes Type This property determines whether the Fenestration Construction can be assigned to Vertical Glazing or Skylights Assm Context Whether the Fenestration Product is Manufactured Site Built or Field Fabricated e Cert Method Whether the Fenestration Construction represents and actual NFRC rated product or is based on T 24 Default Assumptions e Greenhouse Garden Window checkbox This property identifies greenhouse garden windows and allows for lookup
126. ull load airflow that the tower has at low speed or with the pony motor operating This is equivalent to the percentage full load capacity when operating at low speed e Minimum Speed Ratio Minimum fan speed for a variable speed tower The minimum fan speed setting of a VSD controlling a cooling tower fan expressed as a ratio of full load speed e Status Defines if equipment is new existing or modified e Design Entering Water Temp The temperature of the condenser water leaving the cooling tower at design conditions This is set equal to the lesser of 85 F or 10 F above the design wet bulb temperature e Design Leaving Water Temp Cooling Tower Design Return Water Temperature The design condenser water return temperature entering tower that was used for selection and sizing of the cooling tower e Inlet FluidSeg Name The heat rejection inlet connection to condenser water return or CWR e Outlet FluidSeg Name The heat rejection outlet connection to condenser water supply or CWS Building Data Screen Note that Building Data input screen is identical to that described above in the Envelope Input Screen Details Users may edit Building Data on either the Envelope or Mechanical tab of the user interface and that data will persist on both tabs See the Building Data Screen above in the Envelope tab for details 77 CBECC COM User Manual 2013 Air System Data Screen Air System Data Version 1f Currently Active

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