B13_26_1980_Jul_EASI User`s Manual, Version 1.0_Public Works
Contents
1. Public Works Canada Design and Construction Technology bI ae MEN 5 RE DUE E S REMIS i This draft is not a departmental publication of PWC Do not cite as a refer ence or catalogue a library EASI USER S MANUAL Version 1 0 July 1980 Computer Aided Design CAD Information assistance and user feedback CAD Centre Public Works Canada 7E Sir Charles Tupper Building Ottawa Ontario KIA 0M2 613 998 9513 Public Works Canada EASI a Design and Construction USER S MANUAL Technology Version 1 0 July 1980 Computer Aided Design CAD Information assistance and user feedback CAD Centre Public Works Canada 7E Sir Charles Tupper Building Ottawa Ontario 0 2 613 998 9513 4 This draft is not a departmental publication of Do not cite as a ence or catalogue in a library 11 INTRODUCTION This report describes a prototype version of the EASI program This program is presently under development It is not in its final form and has not yet been thoroughly tested therefore it is not intended to be relied upon as a design tool at this time The purpose of this prototype version is to obtain some user feedback which will influence the final form of the program OBJECTIVES OF THE EASI PROGRAM The ultimate objective is to provide a fast easy to use me2. The EASI program requires an IM70 minicomputer with 4 floppy disk drives line printer and CRT Terminal This manual assumes some familiarity with using the IM70 system The inexperienced are referred to An Introduction to Running Fortran Programs on the IM70 for instruction on starting up etc The EASI program uses 3 floppy diskettes The working file disk is mounted in drive 1 the program disk is mounted in drive 2 the weather data disk is mounted in drive 3 A separate weather data disk is required for each location At present the choice is limited to Vancouver and Montreal weather To execute the EASI program type BA F2 EASI followed by carriage return It takes approximately 1 minute for the program to load After this you will be prompted for input as described below Overview of Input Procedure The first time through the program you will be prompted for basic zone data This basic data is that which might apply to all zones whether they are internal or external zones this is discussed in Section 3 After the basic data has been input it will be displayed on the screen and you are given the option of adding surface data surface is a wall window combination Each surface faces one direction but there may be as many as surfaces in one zone If the zone is interior there would be no surfaces i e reply 0 If the zone is perimeter you must add a surface reply ADD Again you are prompted for input va
3. enter 1 line description to identify the zone FLOOR AREA DEFAULT 1 000 Sq Ft enter the floor area of the zone Vol dap BUILDING THERMAL RESPONSE DEFAULT L valid responses are X instantaneous i e no thermal mass 2 heavy 4 8 6 bef cket 4 Brick Lia very heavy i e 8 concrete floor M H Y 5 oc L light XILAZ Frenne amp 44 medium ije 4 hoor 27 4 Layers 4 tice ue lls Crisp 5070 e sol feeds 7 f cer Hing Hols amp TIME SCHEDULE IDENTIFIER DEFAULT 3 time variations for lights people and infiltration are specified by giving values for occupied unoccupied and part occupied periods These time periods are defined for different types of building use in a library see Appendix A for description of time schedules in library You must enter one of these identifiers choose that which best describes your application Ex OFFI for tyical office SCHO for school SHOP for shopping centre HOUS for residence INPUT TO LIGHTS OCCUPIED DEFAULT 0 000 WATTS S4 RT enter power input per unit area to lights during c yhoccupied period INPUT TO LIGHTS UNOCCUPIED DEFAULT 0 000 MATTSJShZET ditto during unoccupied period INPUT TO LIGHTS PART OCCUPIED DEFAULT 0 000 WATTS Y ditto during part occupied period rir un Pei EAR Ld OF LIGHTS HE
4. You are then asked for the depth of the overhang reply 0 if no overhang If you specified a depth of overhang you are prompted for other dimensions pertaining to the overhang 12 You are then asked for depth of right side fin reply O if no right side fin If you specified a depth you are prompted for other dimensions pertaining to right side fin The above process is then repeated for the left side fin An example is shown in Table IV Azmith and Tilt Option An optional input permits you to specify the exact orientation of a surface really the window do this reply AZMI or AZMITH to the orientaton prompt You will be asked for the azmith in degrees from south with west positive and east negative and then for the tilt angle degrees from horizontal facing sky Example ADD DELETE OR CHANGE A SURFACE DEFAULT NO CHANGE SURFACE IDENTIFIER 4CHARACTERS 2551 CHANGE WALL WIND DIRX SHOW NO DEFAULT NO DIRX ORIENTATION DEFAULT WEST AZMITH WALL AZMITH DEGREES FROM SOUTH DEFAULT 90 00 DEGREES 281 TILT ANGLE 0 HORIZ 90 VERT DEFAULT 90 00 DEGREES 260 CHANGE WALL WIND DIRX SHOW NO DEFAULT NO SURFACE ID SSI WALL GROSS AREA 800 SQ FT U YALUE 110 BTU HR SQ FT F WIND AREA 400 SQ FT SHADING COEFFICIENT 1 00 U VALUE 1 000 BTU HR SQ FT DEG F DIRX AZMITH 81 DEGREES TILT 60 DEGREES C 13 4 Units Conversion The first time input or BEGI
5. 4 95 1114 9 95 441 5 83 49 1 15 8 9 d 8 9 600 6 9 2317 9 95 FORM NO TABLE Example J ada ing 4surjiace 91152 TELETE OR CHANGE SUF DEFAULT sun SURFACE 4 Assi GRASS ARES OF SURFACE HEFL FRAO JALE GF WALL DEFAULT A E TRG PAL WING AREA LEFT 5039 80 0D LE UINDO UALUE DEFAULT 1 WINE SHADING COEFFTCTENT DEFAULT 1 DF IENTATTQNT DEFAULT zNDRT 75TH hi SW RAAT HE CR ET DEG F 0 000 SURFACE 10 991 WALL GROSS AREA 809 S FT U VALUES 110 BTU HR TILIT TIEGL AREA 290 SOFT SHOWING COEF FCIENT 1 6595 U VALUEZ 1 000 RT HE Q FT DEB F RIPXi ORIENTATIONSSQUT ADM DELETE OR CHANSE A SURFACE BEFAULT zNO COMMAND DEFAULT LIST 7hNE ZONE LzSCRIPTION TEXGMPLE 21 SOUTH PERIMETER ZONE OF VANDI UER OFFICE PEEING E CORNAS T DEFAULT 21151 aS PPRINT DESIGNER CHECKED BY JABLE UL ZONE EXANFLE 2 FLOOR ARER THERMAL RESPONSE L AREA RESP TIME ID OFFI TYPICAL OFFICE OCCUR PARTI x UNO LITE OCCUPIED 2 50 WRTT SO FT Reip Cn CONSULT SOUTH PERINETER 20 1700 4 Su FT 2 RADIANT 55 FEOF QOCUPIED 208 50 FT PERSON IHL QCCUPIED 18 CFH S FT ROOF RRER 100006 SQ SURFRCE 10 551 WALL GROSS RRER 886 50 FT WIND RRER 250 SQ FT i SHADING COEFICIENT 1 00 D
6. HA TASR FT 1 PLS t OF LIGHTS HEAT TQ RETURN AIR 0 0009 X OF LIGHTS HEAT WHICH TS RADIANT TFFAULT 55 0000 PENNE TENSITY DOCCUPTED Q Q0 SQ FT PERSON 200 DENSITY UNOCCUPIED priam i 001 SR FT PERSOAD CNN PEOPLE DENSITY PART DEFAULT 0 00080 P PERSON 720000 INFILTRATION RATE OCCUPIED 0 090 EF A790 71 INFILTRATION RATE UNOCCUPIED OQ Gee tee 790 FT 7 1 INFILTFATIOM FART OCCUPIER Q HO0 PFM S0 FT 7 1 R F AREA EPMELT Q G0039 FT 71970 ROGS U VALUE GFFAWLT DENH STU HR EQ T TIEG LF 7 07 ZONES EXAMPLE 1t INTERIOR ZONE GF UANZQUUFR DFFTCE AREA FLOOR AREA 1000 0 SQ FT RESP THERMAL RESPONSFzI TIME IDSOFFI TYPICAL OFFICE OCCUPIED B S WEEKDAYS PARTLY DOCURTED 7 8 4M 5 7 WEEKDAYS UNDCCUPTES THER TIKES UMITEUPLEDs 209 WATT SDAFTS PARTLY DCCUPIS2 1 2 WATT SQ FT 4 TO 8 4 5 0 0 200 SQ FT PERSON UNDCCUPTED 0 SQ FT PERSONS PARTLY QDCCUPTED 20000 SQ FT PFREIN UNOPTUP TE 16 CFH 8g PTj PARTLY QCCURTER 10 OFM 59 FT U VALUES 070 RTU HR SQ FT DEG F LITE GCCUPIED 2 50 WATI SG FTi X RADIANT 55 0 QCCUPIED OCCUPIED 410 CFH SG FT ROOF 1000 0 SQ FT ADI BELETE OR CHANGE SURFACE 0 AE 5 DEFAULT LIST PRINT Example l first d e F J T o DESIGN
7. ADD DELETE OR CHANGE A SURFACE DEFAULT NO We will assume that this is an interior zone therefore the appropriate response would be NO This results in the following prompt COMMAND DEFAULT LIST In the command mode you have the option of editing your input data or of executing a number of commands These will be discussed in the following section An example of first time input is shown in Table Ia Note that the convention used in examples is to underline the users input I E from keyboard Note that a blank line indicates that carriage return was pressed to indicate that the default value is to be used Command Mode In response to the command prompt you may either edit input data or execute commands The valid responses are summarized in Section IV In order examine your basic input data type LIST basic input data will be displayed on the screen You can now examine your input to determine if it is what you want to input If there are any errors you may change the input as will be described later If you are satisfied with the input data type PRIN to perform the load calculation The input data will be printed on the line printer followed by the results of the calculations This takes approximately 30 seconds example for an interior zone is shown on Table Ib Let us now suppose that you wish to change some basic input data either because you noticed a mistake or because you wish
8. ROOF 1200 1 ex to leave roof area unchanged but change u value to 05 ROOF 05 21 ex to run on printer the zone for light medium and heavy construction RESP L PRINT RESPzM PRINT RESP H PRINT ex to change direction of wall W1 to 10 east of south notice it gets complex so don t go to far SURF CHAN 1 DIRX s AZMI 10 90 NO 2 Units Conversion It may sometimes be convenient to specify an input value in the other system of units program permits you to do this by replying UNIT to a prompt for a numerical value You will then be prompted the other system of units and the value will be converted ex to enter roof area in sq meters ROOF ROOF AREA UNIT ENTER IN SQ M 100 DEFAULT 1000 SQ FT CONVERTED TO 1076 39 Note that the type ahead capability can be combined with units conversion ROOF UNIT 100 The above could be accomplished by DEFICIENCIES AND SUGGESTIONS FOR IMPROVEMENTS This section is to be written by users of the EASI program The only way to get the program you want is to communicate your complaints and your needs the EASI program However keep in mind the objectives of 22 The author will begin with a few items just to get you started program should indicate what weather data is being used needs more locations should be more descriptive labels available for project surface etc need more time sched
9. You will then be prompted for the Surface identifier this may be any maximum 4 character name you like You are then prompted for the following information which will P be discussed in more detail in section 6 D gross area of surface vat e of opaque wall window area window value window shading coefficient orientation When this information has been entered the surface data is displayed on the screen and the surface mode prompt appears If you wish to add another surface reply ADD and respond to the prompts you are finished reply 0 this returns to command mode 10 C 8 You may display all the surface data from either command mode or surface mode by using the SHOW command Table II shows an example of converting the interior zone input to a south perimeter zone by adding a 800 ft wall containing 250 ft of single glazed window Changing Surfaces To change surface data you must be in surface mode i e type SURF if you are in command mode Reply CHAN or CHANGE to the surface prompt You will be asked which surface you wish to change reply with the surface identifier You are then asked if you wish to change wall data window data or orientation You may display the surface by typing SHOW When you have finished making changes reply NO The surface data is displayed on the Screen if you have changed orientation DIRX or window WIND there will be a pause while so
10. to try an alternative LIST to display the data Notice that data is arranged in groups which we will call data groups which have a 4 character identifier To change data type in the appropriate identifier you will then be prompted for the input data in that data group Simply press return for any data which you don t want to change A 755 For example to change the roof U value to 0 1 leaving roof area unchanged COMMAND DEFAULT LIST ROOF ROOF AREA DEFAULT 1 000 000 SQ FT ROOF U VALUE DEFAULT 070 BTU HR SQ FT DEG F 12 COMMAND DEFAULT LIST To convince yourself that it is changed type LIST to calculate loads using new U value type PRIN The commands which apply to surfaces SURF SHOW will be described in the following section The BEGI command causes you to be prompted for all input from the beginning like first time through This may be useful if there are a lot of changes and you are afraid of forgetting something The STOP command is used to terminate the program when you are finished It is important to STOP because this cleans up the scratch files i e don t just take out your disks amp shut off machine Adding Surfaces If the zone is a perimeter zone then you must define at least one surface in addition to the basic data To do this from command mode type SURF You will then be in surface mode as indicated by the following prompt To add surface reply ADD
11. AT TO RETURN AIR DEFAULT 0 000 enter the percent of heat from lights which does not heat the space but rather raises the return air temperature Caution this would seldom exceed 15 except when return air is ducted through light troffers UTITUR imei eiae iri 2 NET LIGHTS HEAT WHICH IS RADIANT DEFAULT 55 000 enter the percent of heat from lights which is transferred by radiation typical values fluorescent lights 50 incandescent lights 80 PEOPLE DENSITY OCCUPIED DEFAULT 0 000 f PERSON enter floor area person during occupied period Note 0 means no people in space PEOPLE UNOCCUPIED DEFAULT 0 000 Et PERSON ditto unoccupied period PEOPLE D NSAUM PART OCCUPIED DEFAULT 0 000 fk PERSON ditto part occupied period INFILTRATION RATE OCCUPIED DEFAULT 0 000 6 lh Sn ET enter infiltration rate per unit floor area during occupied period ACH INFILTRATION RATE UNOCCUPIED DEFAULT 0 000 50 lt ditto unoccupied period Ac H INFILTRATION RATE PART OCCUPIED DEFAULT 0 000 amp FM SQ FT ditto part occupied period ROOF AREA DEFAULT 0 000 SQ FT enter roof area ROOF M VALUE DEFAULT BTU HR SQ 0T DEG F enter roof U value p This completes input of the basic data This input data will now be displayed on the screen Then the following prompt will appear
12. ER CHECKED BY MONTH OO 6 Cn f t4 F2 Mo oc 2 TONE ARER RESP TINE LITE PEOP INFL ROOF REID CROWTHER amp PARTNERS LIMITED CONSULTING ENGINEERS AND PLANNERS TABLE tiene 2 ii INTERIA T VBHCOUNES OFFICE BUILDING FLOOR cll BE d COIEINSESL 5 3 HEERDAYS TYPICAL OFFilz moi 2 TED 7 8 AN amp 5 WEEROAYS LT D TIMES OCF 0 2 59 WATT So Fe UNGE 2a WATT Se Fii 1 98 WATTS FT C5 RBDISMTIAS 8 SB FT PEFSON 20800 5d Pi FERSUN e omer HELUP IEL OCCURIEDS 10 CFM 5 UNCCUPIED 46 FT 18 CEMEG FT RRER 1300 8 SQ FT U VSLUE 8780 BTU HR S rT DEG F oko ODL CONSUMPT TOR PERK CONSUMPTION PEAK KMBTUZHR HBTUD CNBTUSHRD asri 9 8 479 4 62 2287 6 55 353 4 2114 6 34 S68 4 34 Laz 5 88 fad 5 61 1194 4 3 1128 58 87 522 2 63 8 18 595 3 33 1604 3 95 618 2 57 1478 amp 16 351 4 15 1894 6 88 1395 5 19 941 5 2865 6 34 826 4 24 2202 6 67 396 3 83 18277 9 80 49921 9 23 25 DATE __ PROJECT 2 E x app la results T xdg of PRINT daak REFERENCE CONSUMPT IGN PEAK CHBTU TIBTUZHR 8 8 88 6 aa 8 8 8 8 184 7 39 38
13. HE 1 000 STU HE CQ FT REGLF dor u i 3 U DESIGNER CROWTHER amp PARTNERS LIMITED CHECKED BY CONSULTING ENGINEERS AND PLANNERS A PPEr bx A Taine Schell 4 brary OFFI TYPICAL OFFICE OCCUPIED 8 5 WEEKDAYS PARTLY OCCUPIED 7 3 RM amp 5 7 WEEKDAYS UNOCCUPIED OTHER TIMES SCHO SCHOOL OCCUPIED 9 4 MON FRI PARTLY OCCUPIED 8 9 4 6 86 SEWE UNGCCUPIED OTHER CALL OF amp AUG SHOF SHOPPING OCCUPIED 42 5 MON SAT EXCEPT 18 18 THURS PARTLY OCCUPIED 8 108 5 7 MON SAT EXCEPT B 18RM i8 12PH THUR UNGCCUPIED OTHER TIMES HOUS HOUSE OCCUPIED 7 GAM 6 12 EVERY DEW PARTLY OCCUPIED SAM lt eM EVERY DAY UNOCCUPIED 44PH 7AN EVERY DAY PAGE NG eect einem cance nae DATE ass PROJECT FORM NO 3 3
14. IRK ORIENTRTIUNSSQUT e HE RT CONSUMPTION PERK HONTH CNETUD HBTUZH i 1 8198 29 S6 2 272 28 11 x S461 18 95 4 4672 17 68 5 3279 13 75 6 1572 256 7 1432 18 31 8 1562 8 64 9 29518 13 14 19 3412 15 27 1 6822 19 02 12 2288 21 64 ANNEAL 51612 29 56 tt 4 i THER amp PARTNERS LIMITED ENGINEERS AND PLANNERS pose wore i OF VRN DVER OFFICE BUILDING 8 5 WEEKDRYS CCUFIED 7 6 RM 5 7 WEEKDAYS PIED OTHER TIMES 29 59 1 50 HRTT SG FT UNCCCUPTED PARTLY QCCUPIED z TORA UNOCCUPTED 8 Si FT PERSON PARTLY GCCUPIED 28060 50 FT PERSUN UNDCCUPTED 18 CFh SQ FT PARTLY QCCUPIED 18 CFWSG FT U VRLUE 4120 BTU HR SG FT DEG F U VALUE 110 BTU HR SEL FT DEG F U VALUE i G84 F CONSUMPTION PEAK HBTU HK 1596 19 62 1267 23 12 1967 22 05 2776 26 45 2987 27 27 3785 21 77 6228 3156 5288 33 37 4851 31 69 3812 23 98 1781 24 08 767 16 60 35363 33 57 PAGE NO see DATE of print RERE FERENCE CONSUMPTION PERK CMBTUCHR gt 6 a A 8 amp 8 8 08 943 22 180 1592 13 38 3948 3i 1984 23 99 329 5 53 8 0 88 8 8 08 8388 31 56 FORK TABLE HI 7 afhangina surtace Ceca DEFAULT 4751 ADNAAELETE OR CHANGE 4 SURFACE DEFAULT zND SURFACE TDENTIFIE
15. N permits you to specify the system of units Imperial or SI to be used for input and output However there is an option which permits you to enter a value in the other system of units and have the program convert it for you To use this option reply UNIT to the prompt for a value you are then prompted in the other system of units Enter the value and it will be converted Example Suppose that SI units are being used and you wish to enter 0 1 cfm sq ft for the infiltration rate INFILTRATION RATE OCCUPIED DEFAULT 0 000 L SEC SQ M ai ENTER IN CFM SQ FT 1 CONVERTED TO 047 INFILTRATION RATE UNOCCUPIED DEFAULT 0 000 L SEC SQ M UNIT ENTER IN CFM SQ FT 7 1 CONVERTED TO 047 INFILTRATION RATE PART OCCUPIED DEFAULT 0 000 L SEC SQ M UNIT ENTER IN CFM SQ FT 2 1 CONVERTED TO 047 COMMAND DEFAULT LIST 14 gt IV 5 Type Ahead feature After becoming familiar with the use of the program you may become impatient waiting for prompts If you are able to anticipate the next required input s you may type them on one line separated by either comma or equal sign The prompts will be inhibited For example to change building thermal response type RESP H or RESP H to change roof u value leaving roof area unchanged type ROOF 08 the comma indicates no entry for area to perform both changes above and then print results 5 ROOF 08 PRIN You may combine c
16. PERSON UNOCCHEIEL amp S0 FTVPERSON PARTLY OCCUPIED 20008 50 FT PERSON INFL OCCUPIED 18 CRASS FT UNDCCUP IED 18 CFM ASE FT PARTLY GLCUPIED 18 CFH SQ FT ROOF ARER 1008 60 FT U VRLUE 126 ETU HR s FT DEG F SURFRCE 1D s51 WALL GROSS ARER 8688 50 FT U VALUE 118 BTU HR S0 FT DEG F RRER 408 50 Fr SHADING COEFICIENT 1 88 U VALLIE 1 000 BTU HR 50 FT DEG F DIRK ORIENTATION REST Jee COOL CONSUMPTION PEAK CONSUMPTION PERK MONTH HBTU HR NBTED 1 13666 37 93 46 274 2 10671 26 19 268 1 amp 5 3 8642 24 96 8 3 28 15 4 8127 19 62 4183 49 99 5 2727 15 28 5850 49 09 6 983 7 66 8157 46 45 7 1086 18 50 18875 56 86 8 13635 9 34 7153 49 15 9 3636 16 38 2936 35 34 18 6492 18 98 892 21 32 11 10891 24 52 88 5 42 12 13660 20 97 2 46 77865 37 93 48867 56 86 2 9 PAGE NO n DATE Ree NA PROJECT NG a wer ot print CONSUMPTION CHETU MBTUZHRO a 4 8 Ba 8 6 g g 8 aa 861 49 55 3314 34 76 6845 56 86 2767 36 23 296 5 86 8 99 8 8 8 8 9 Q 14803 J 86 TALE hs IN RFI IBEN ISITRT 6 TERS 762 CHANGE MALE NTC o Een 3n an AREA T 26 MINDS 72 WERTH 25 5 m QUERHZA 73 8 PEE Tie aF NID
17. R 4 CHARACTERS 9951 hex VINI AREA 7406 Va au MOLL e INT CIS SEC HN pr om SHAPING COEFFICIENT A CHANGE WALL WIND RIKK SHOW ND OR EN TAT ON WEST CHANGE BALLAMINBATITRX SHOR NA Ph SURFACE Iesst WALLS GROSS AREA 809 SQ FT 400 SB FT SHADING COEFICIENT 1 094 DIRX GRIENTATIONSUEST ARD DELETE Of CHANGE A SURFACE PONE ESCRIPTION TEXAHBLE amp 31 CONKAND PRINT T See ZONE DF VAOOUJER OFFICE Ent DING zn 290 020 20 87 pera T 1 000 ETl HR SQ FT PEG F BEFAULT 1 000 DEFAULT zND SQUT DEFAULT NO U UALUE 410 RTU HR SQ IT EG F U VALUES 1 000 RTL WS CU FT DEG F DEFAULT 540 DEFAULT LIST DEFAULT LIST DEFAULT LIST DESIGNER CHECKED BY TABLE REID CROWTHER amp Partners LIMITED CONSULTING ENGINEERS AND PLANNERS LISE E vsinple Ill uu veo sellz am oc 2 ZONE EXAMPLE 3 WEST PERIMETER ZONE OF VANCOUVER OFFICE BUILDING RRER FLOOR AREAS 1008 8 SQ FT RESP THERMAL RESPONSE L TIME IDz FFI TYPICAL OFFICE OCCUPIED 9 5 WEEKDAYS PARTLY OCCUPIED 7 8 AN amp 5 7 WEEKDAYS UNOCCUPIED OTHER TIMES LITE GOCURIED 2 58 WATT 5 UNOCCUFIZD 25 MRTT SO FT PARTLY GCCUTIED 158 WATT Sa FT X RADISNT 53 d RA PEDP OCCUPIED 200 SQ FT
18. Y 2 EERE LETT EIGE SDE 1 PERTH OF DEPTH GF LEFT FIN 72 FROM LEFT ELSE OF WINDOW 74 ABE TAF 2 AROVE BOTTOM OF 3100047 Pa OF PISHT FIN 72 FROM RIGHT EDSE OF UINDOM 24 ARGUE TL DF JINDON AEE BOTTOM OF AF YINE uIkDOy t uring M U UALUE SHADING COFFFICIENT CHANGE WALL MINDIIERXHSHOQO NI 4 SURFACE 102651 VALLI WIND GROSS amp REA 803 ERFT NUMBER fF YINDGWS 4 WINTH 10 09 FT SHADING QUERHAND DEPTHS 3 50 FT BEYOND LEFT 4 09 FT EYEBRUU 0 00 FT LEFT SITE FINS DEPTH 2 20 FT ABOVE TOP gt 2 00 71 RIGHT SIDE FIN 2 00 FT ABOVE 2 00 FT SHADING COEFICIENTz1 00 DIRX ORIENTATION WEST ex Wo ua gs 1 MES Lu HEPAT CEFAULT MAMET rm t at iF Ae ya Gata ET za 5 a 1 Q 0MIED GEPSILT 0 980672 0 000877 ay m A aces R c E i 0 0004 13 0 089 FT DEFAULT z J MET DEFAULT PANET O DEFAULT 3 000A CETUHR SI FT TIE F DEFAULT 1 000 EFAG T W VALuEs 2110 ET i HR 8 T T DEGSF REISHT 1000 FT RENE HANS 2 09 BEY M RIGHTS 4 03 FT FROM LEFT 4 00 FT AERIS TOTTOM 4 09 FT FRUS RIGHT 4 00 ET ABQVE BOTTOM 0 00 FT U VAL
19. ans of performing energy systems analysis inexpensively on the CAD minicomputer design station This process involves calculation of building zone thermal loads amp simulation of HVAC system and equipment such as chillers boilers etc The program described in this report is only one part of this analysis system it performs the thermal load calculations for one zone and stores these on a file for use by the yet to be developed systems simulation phase A more immediate objective is to provide a stand alone capability for evaluation of energy consequences of architectural designs The program described here may be considered to be an enhanced ABC 1 program with the following improvements over the table lookup approach thermal mass of the building is considered the zone may have windows facing different directions maximum the exact orientation of the window azmith amp tilt may be specified This permits consideration of skylights clerestory etc exterior shading devices overhang and side fins may be considered time scheduling capability is more flexible than ABC heating cooling peaks as well as consumptions are computed output is by month as well as annual A primary consideration in EASI is that it be easy to use even though this may require compromises in the capability and accuracy The underlying philosophy is that the user can always use one the very sophisticated and detailed ener
20. gy programs which are available when greater capability is required EASI utilizes a conversational interactive format similar to that of ABC but with type ahead and units conversion features Like ABC and probably all other energy programs this program is best used for comparison of alternatives rather 2 than predictions of performance Before learning how to use EASI it may be worthwhile to examine the results of a zone calculation Referring to Table Ib see page it can be seen that the output consists of 6 quantities Heating energy consumption Heating peak Cooling energy consumption this is the room cooling load If the system uses outdoor air for free cooling this value has little meaning however if the system is fixed outdoor air specified in ventilation this value indicates cooling energy required Cooling peak this is of interest as an indication of terminal unit size ex air flow rate ib a Reference Consumption is the cooling required by idealized VAV system which uses outdoor air for free cooling This ideal system is the same as that in ABC Reference Peak is the peak cooling for the ideal system This is an indication of chiller capacity required The above values based upon a constant indoor temprature Z of 75 F Room temperature variations would be considered in the systems phase of the analysis USER INSTRUCTIONS Initiating the Program
21. ied and part occupied periods Enter of heat of lights to return air Enter of heat of lights which is radiant Typical values are 50 for fluorescent and 80 for incandescent 16 42 INFL Commands LIST CALC PRIN Enter people density expressed as floor area per person for occupied unoccupied and part occupied periods Enter 0 to indicate no people in the room Enter infiltration rate expressed as flow rate per unit floor area for occupied unoccupied and part occupied periods Displays basic input data on screen in data group format Calculates zone heating cooling loads and displays results on screen Note the present format does not fit on the screen therefore recommend using PRINT instead if you wish the reference values Prints input data both basic and surface on the Tine printer then performs heating cooling load SURF SHOW BEGI STOP calculation and prints result on line printer Enters Surface mode This permits adding deleting or changing surface data see section 2 Displays surface data for all surfaces on the screen Starts from beinning with prompts for all input Terminates execution 17 Surface Mode The surface mode is entered from Command Mode by the command SURF data NO SHOW DELE ADD CHAN In this mode you may add delete or change surface Valid commands in surface mode are Mean
22. lar modifiers are calculated and stored on the file Table III illustrates the use of CHANGE to convert the south perimeter zone of example II to a west perimeter zone having a glass area of 400 ft Deleting Surfaces To delete a surface enter surface mode and reply DELE or DELETE to the prompt You are then asked which zone you wish to delete Input Options Up to this point we have discussed the simplest form of input There are a number of optional features which increase the capability and convenience of the EASI program 11 1 Percent Glass Option You may wish to express the glass area as percent of the gross surface area do this reply to the window area prompt you will then be prompted for the percent glass enter value between 0 and 100 Example CHANGE WALL WIND DIRX SHOW NO DEFAULT NO WIND WINDOW AREA DEFAULT 400 000 SQ FT 2 ENTER AS OF GROSS SURFACE AREA DEFAULT 0 000 225 WINDOW U YALUE DEFAULT 1 000 BTU HS SQ FT DEG F 225 WINDOW SHADING COEFFICIENT DEFAULT 1 000 CHANGE WALL WIND DIRX SHOW MO DEFAULT NO 2 Window Shading Option EASI simulates overhang and side fin shading of windows This requires that window dimensions be specified rather than window area To use this option reply for number to the window area prompt You will then be asked the number of windows and the window height and width area equals t of these three
23. lues to describe the surface If the zone has more than one exposure you may add more surfaces in the same way reply NO when no more surfaces are to be added Note that there will be a few seconds pause after adding each surface during this time the solar modifiers for that surface are being calculated and filed After replying NO to the surface prompt you return to command mode as indicated by the COMMAND prompt You have the option of displaying your input data editing your input data if you notice some errors or of requesting the program to calculate using your input data These options are discussed in section 4 V One of the commands SURF or SURFACE permits you to indicate that you wish to add delete or change a surface This procedure is described in section 5 The normal procedure for using EASI would be to enter basic data for first zone enter surfaces if any for first zone display data and check for errors use editing procedures to change data if necessary perform calculation edit input data for any alternative to be evaluated and perform calculation for alternative edit data to describe second zone and repeat as above etc First Time Input After initiating the program as described in section 1 you are prompted as follows UNITS IM OR 511 DEFAULT IM reply IM or return if you wish to use imperial units reply SI if you wish to work in SI units ZONE DESCRIPTION
24. ng beyond left edge of window left looking from outside extent of overhang beyond right edge of window right looking from outside depth of eyebrow projection on overhang Note see figure Ia for further clarification of above dimensions depth of left side fin left looking from outside Enter 0 if no left fin The following must be entered only if left fin is specified distance from fin to left edge of window distance from bottom of window to bottom of fin Note see figure Ib for further clarification of above dimensions 19 depth of right side fin right looking from n outside pe Enter 0 if no right fin The following must be entered only if right fin is specified i distance from fin to right edge of window ii extent of fin above top of window iii distance from bottom of window to bottom of fin Note see figure Ic for further clarification of above dimensions Following window area and shading information if appropriate enter window shading coefficient and window U value DIRX The surface orientation may be specified as 5 One of the cardinal directions NORTH N E EAST S E South S W WEST N W or horizontal HORI The keyword AZMI which will result in you being prompted for azmith angle degrees from south west positive east negative amp tilt angle degrees from horizontal i e 0 horizontal facing skyward 90 vertical wall Error Messages All in
25. ommands inputs and option specifications example to specify direction DIRX AZMI 81 60 To use units conversion in changing floor area AREA UNIT 100 This feature can be very convenient Remember however that it is intended to simplify and speed up input Don t allow yourself to become confused by trying to get too far ahead REFERENCE MANUAL Command Mode COMMAND In command mode you may either edit basic input data or execute commands 15 Editing Basic Input Input data is organized into groups called data groups Each data group has a 4 character identifier edit data enter the identifier for the data group for which you wish to make a change program will prompt you for input If you do not wish to enter a new value hit carriage return and data will remain unchanged default value is shown at the right Side of the screen The data groups are ZONE This permits you to supply a label to identify the zone The label may be up to 72 characters one line AREA Enter floor area range 1 to 9999999 RESP Enter thermal response of building X instantaneous no thermal mass L light construction M medium construction H heavy construction Y very heavy construction TIME Enter identifier of time schedule which describes your application See Appendix A for time schedules which are defined in library LITE Enter power input to lights for occupied unoccup
26. put is checked for validity and allowable range should an error be detected a message will be displayed on the screen and you will be prompted to re enter the data Most of the error messages should be self explanatory Take care to distinguish between the numeral 0 and the letter 0 20 The kkk kkk following error messages may occur in the Surface Mode WINDOW AREA MAY NOT EXCEED GROSS AREA If you are in the change mode change either gross area WALL or window area WIND You will not be permitted out of the change mode until you correct the input If you are in add mode you will be prompted for all surface input from beginning You must make the correction before you will be allowed to proceed SHADING ONLY PERMITTED ON VERTICAL SURFACE If you are in change mode change either to remove shading WIND or to set tilt angle to 90 degrees DIRX Note that this might no longer describe your application If you are in add mode you will be prompted for all surface input from beginning Advanced Input Features 21 Type ahead capability Once you become familiar with the program you will be able to anticipate what it will ask for next If you are impatient and would rather not wait for the prompts you can enter a number of inputs or commands on one line separated by either comma or equal sign ex to change thermal response to heavy RESP H ex to change roof area to 1200 and u value to 1
27. s you do not wish to add delete or change a Surface This returns you to command mode Displays on the screen the data for all surfaces presently defined Deletes the specified surface You are prompted for the surface identifier Adds a new surface You are prompted for surface identifier Then you are prompted for wall window and orientation information in a manner similar to that described for the change command below Changes data in a specified existing surface You are prompted for surface identifier then prompted for the data group which you wish to change in that surface Valid responses are 0 Means you do not want to make any more changes to this surface Returns you to surface mode SHOW Displays surface data for the surface which you are changing on the screen WALL Enter the gross surface area i e sum of wall and window Enter U value of the opaque wall 18 WIND a b c 1 ii 111 1 11 There are 3 options to specify window area enter the window area in sq ft or sq m enter You will then be prompted for the window area as a percent of the gross area specified under wall enter You will then be prompted for number of windows height of window width of window depth of shading overhang Enter 0 if no overhang The following are required only if overhang is specified dimension from top of window to overhang extent of overha
28. ules in library Probably need a method for the user to define non standard schedules could have more load components ex equipment misc could have more input options ex KW to specify total lights load rather than watt sq ft PERS to specify number of people in space rather than sq ft person QTY to specify total infiltration instead of cfm sq ft DIMS to specify dimensions rather than area for floor area surface area etc to specify R value instead of U value Ax n Could specify window type rather than shading coef and U value This would require a library of window types with transmittance and absorbtion coefficients Could use tranfer function for heat gain through walls and roof Would increase execution time and require library of wall roof types Could have mechanizm for saving and recalling zone input data on disk files Lots more 23 TABLE 2 CIM AS ST EFA LT sij ZONE TECI RIPTION T TEXA e 6 opp TRE JJFP ez Toc anny frg FLAG apta CEFA So PTa 1001 DHS THERMAL EGENHSE DEFAULT zl TIKE I EGLE IDENTIFIER 7 TIRE TYPICAL GICUPIED 6 9 ESTA PARTLY OCCUPIED 2 0 cH i 7 wECKMATYR UNOCOUPTED QTUES INPUT Ty LIGHTS ACCUPTER DEFAULT DQM 92 5 iB LIGHTS UNOCCUPIED DEFAULT D QOOWATTS SOFT 1428 INPUT TQ LIGHTS PART OCCUPIED TEFAILT Q 000
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