Getting Started Guide v. 3.0
Contents
1. Total Length ft 0 0 0 0 Borehole Number 24 24 Borehole Length ft 0 0 0 0 Ground Temperature Change F 0 0 0 0 Unit Inlet F 85 0 50 0 Unit Outlet F 95 0 50 0 Total Unit Capacity MBtu Hr 0 0 0 0 Peak Load MBtu Hr 0 0 0 0 Peak Demand kW 0 0 0 0 Heat Pump EER COP 0 0 0 0 System EER COP 0 0 0 0 System Flow Rate gpm 0 0 0 0 Optional Cooling Tower Condenser Capacity MBtu hr 0 Cooling Tower Flow Rate gpm Cooling Range F Annual Operating Hours hr yr Load Balance New Vertical Borehole Design Module Push the Calculate button and see what happens Nothing happens because there is no loads data that are linked to the Borehole module We now have to connect the data we entered in the Average Block Loads module to the Borehole Design module The Studio Link system will help us do this At the top of GLD look for the following two icons ae Se os link unlink The icon on the left is the link icon and the icon on the right is the unlink icon Click on the link icon and see what happens Notice in the bottom left corner of both modules the Borehole module and the Loads module that there is a lighted box It looks like this BRER This box indicates that the two modules are linked and have bidirectional communication 25 HEAT EXCHANGER DESIGN STEP 43 Now click the unlink icon You will notice that the position and color of the light has changed i2. HEAT EXCHANGER DESIGN Diffusivity Calculator For the designer s assistance Ground Loop Design includes a Diffusivity Calculator that can be used to determine the actual diffusivity if all the soil parameters are known To access the calculator click on the Diffusivity Calculator button located near the bottom of the Soil tabbed panel For this demo input the following values into the Soil panel e Ground Temperature 58 F e Thermal Conductivity 1 22 e Thermal Diffusivity 0 75 Now we are ready for the Fluid panel Please click on the Fluid tab Your screen will look like this AH Borehole Design Project 1 E x Calculate Fluid Soil U Tube Pattern Extra kw Information Fluid Temperatures and Flow Rate Design Heat Pump Inlet Fluid Temperatures Cooling 85 0 F Heating 50 0 F Design System Flow Rate Flow Rate 3 0 gpm ton m Solution Properties Fluid Type 100 Water Specific Heat Cp 1 00 Btu F lbm Density rho 62 4 Ib ft 3 Check Fluid Tables Fluid Panel The circulating fluid parameters may be entered in the Fluid panel Note The system flow rate per installed ton is included on the Fluid panel This is the system flow rate per ton of peak load not installed capacity This is because it is assumed that all units will not be running at full load simultaneously even in the peak load condition 32 STEP 5 11 STEP 5 12
3. Finish a complete design print out a report and then change which manufacturer s pump s you are using Print out another report and compare Using the Heat Pump Module User Manual chapter 2 input data for a brand new heat pump confirm that you input the data properly via the test function and then create a design with the new pump In the Zone Manager Loads module there is a summary view button that allows users to quickly look at all the zone data simultaneously The summary button looks like this 42 REPORTS AND DESIGN TIPS and can be found in the middle of the row of icons at the top of the Zone Manager This is useful when you want to quickly review all the work you have done on a multi zone installation e GLD comes complete with a full set of reference files including Fluid Properties Soil Properties Pipe Properties and Unit Conversions These files can be accessed from the Tables dropdown menu found at the top of GLD These files are HTML based and can be modified customized or added to by the user using a text editor or HTML editor More information about customizing these files can be found in Chapter 7 of the User Manual e GLD contains a searchable database of information about the program Click on the Help dropdown menu and choose help e GLD stores and models heat pump information in the Heat Pumps module This can be accessed via the HeatPumps drop down menu found at the top of the program GLD stores
4. All results for both the heating and the cooling calculations can be viewed at any time on the Calculate panel After all data has been entered or any changes have been made the user can calculate interim or final results using the Calculate button The two lists on the Calculate panel are for heating and cooling Although all of the numbers shown are valid and respond to changes the side with the longer required length is printed in bold type so that it stands out The Optional Cooling Tower section is included to assist in the sizing of a cooling tower This is a convenient tool for hybrid type designs which may be desirable when the cooling length exceeds that of heating In this demo the heat exchanger is cooling dominated as expected from the loads data Notice that there are 20 boreholes in the Pattern panel we specified a 10x2 grid arrangement and that each borehole is about 550 feet long We now will quickly optimize the design 34 STEP 5 14 STEP 5 15 STEP 5 16 HEAT EXCHANGER DESIGN In this demo we do not want to drill deeper than 300 feet and we have access to a large parking lot and field for drilling Click on the Pattern panel again and change the grid arrangement by modifying the following data e Number of Rows Down 7 e Number of Rows Down 4 e Separation Between Boreholes 22 ft Now go back to the Calculate panel and click on the Calculate button The individual borehole length has dropped to abou
5. As a final step in optimizing the loads data change the following input e Cooling Partial Load Factor 0 93 22 as demo continues on page 24 LOADS AND PUMPS When you do so notice how the other performance characteristics on the cooling side are modified automatically At the top of the Loads module enter the following reference label e Reference Label Vertical Demo Project Now save the loads data Click on the floppy disk icon at the top of the Average Block Loads module Save the file in Program Files Gaia Geothermal Ground Loop Design Zones as Demo zon Summary We have imported loads data into the Average Block Loads module set the occupation level to 5 0 days a week selected a pump and modified the cooling partial load factor This is what your Average Block Loads module should look like I hverage Bock Loads demo a s 3 S a demo2 zon Reference Label j Vertical Demo Project Design Day Loads j Design Day Loads Days Occupied Time of Day Heat Gains Heat Losses per Week MBtu Hr MBtu Hr 5 0 8a m Noon 157 2 410 0 e Noon 4p m 552 1 110 9 _Transfer__ 4p m 8p m 157 2 110 9 Calculate Hours 8p m 8am 157 2 110 9 Annual Equivalent Full Load Hours mHeat Pump Specifications at Design Temperature and Flow Rate T custom Pump Pump Name Cooling Heating Select Capacity MBtu Hr 593 7 605 2 Details Power kW 47 50 4241 Clear EER COP 125 EZS Flo
6. the heat exchanger files separately Colleagues that use GLD can receive these files as email attachments and view modify the project designs and or the loads data Below is a brief description of the two types of files Zone Files Zone loads files are stored as zon files in the Ground Loop Design zones directory They have a general format that can be read into any loads module and they can be used simultaneously in different design modules Project Files GLD saves project files as gld files in the Ground Loop Design work files directory Each project file type vertical borehole horizontal surface water has a specific format that GLD automatically recognizes Sharing Files GLD expects to find the files in the following folders Zone files Program Files Gaia Geothermal Ground Loop Design Zones Project Files Program Files Gaia Geothermal Ground Loop Design Work Files When you send or receive files confirm that the files are in the appropriate directories before trying to open them within the program Note GLD is available in foreign languages contact your distributor for more information If you are working with clients or coworkers in other countries you can just email your files to them and they will be able to read the files in their native language Geoexchange designs can be complex In our increasingly interconnected world you can use GLD to 41 REPORTS AND DESIGN TIPS minimize the risk of c
7. 0 gpm ton Unit Inlet F 85 0 50 0 Average Load Block Module With No Open Zone Click on the New icon to open up a new loads file The icon looks like k and can be found at the top of the Average Block Loads module A new loads screen with zeros for every parameter is now open We are now ready to import a sample Trane System Analyzer file that is included with GLD At the top of the Average Block Loads module there are a series of icons je slaja 2 Click on the Loads Files Import button kd A dialog box opens up that allows you to choose a loads file to import into GLD To find the sample Trane file confirm that you are in the Program Files Gaia Geothermal Ground Loop Design Zones folder Open the sample gt1 file When you select a valid import file GLD automatically transfers the loads data into the Average Block Loads module An Import Loads 10 LOADS AND PUMPS window opens as well and shows the imported data in detail Both windows are shown below K jj Import Loads N 5 c la gt o s s 2 T i I Average Block Loads Module With Imported Data 11 LOADS AND PUMPS In the Import Loads window above there are three columns Total Monthly Loads Peak hourly loads for each month and the Monthly Load Factor The Monthly Load Factor is described in great detail in the full User Manual Near the bottom of the window are total MBtus a summation of January through December an
8. 2000 users with internet access If your computer has access to the internet your computer can automatically install the drivers Follow along with the Windows new hardware wizard to install the drivers The process takes a few minutes When the installation is complete the dongle light will turn on All other users Via Windows Explorer navigate to Main Drive Program Files Gaia Geothermal Ground Loop Design Extras In the Extras folder you will find a HASPUserSetup exe program Run the program to install the dongle driver When the installation is complete the dongle light will turn on After Dongle Installation is Complete Now that the dongle is installed you can access the full functionality of the GLD version that you purchased If you remove the dongle the program will revert to demo mode If you reattach the dongle the program will reactivate again LOADS AND PUMPS Chapter What About The Loads And Pumps program and uses a heat transfer model that takes long term thermal effects into account The program is ideally suited for commercial applications but can be used effectively for residential projects as well Regardless of the project type note that the results that GLD calculates are only as good as the information that the designer inputs It is ultimately the designer s responsibility to confirm that input values are reasonable round Loop Design is a commercial grade heat exchanger design Why D
9. HEAT EXCHANGER DESIGN Note GLD is a modular program meaning that the program consists of several modules that work together to assist you with your designs The fluids panel offers one of the most obvious examples of how the different modules communicate with one another Take a look at the Average Block Loads module once again Notice that the flow rate and the unit inlet temperatures at the bottom of the Average Block Loads Module match those of the Fluids panel Change the cooling inlet temperature in the Fluids panel to 90 F Then click your mouse pointer anywhere inside the Average Block Loads Module The Average Block Loads module cooling inlet temperature automatically updates itself along with the pump performance characteristics This connectivity saves designers much time This feature is especially useful when designers are using the Zone Manager Loads module Chapter 3 in the User Manual While this feature is a tremendous time saver the new calculated equipment capacities can lead to changes in selected equipment so the designer must be aware of the changes Customized pump values must be manually adjusted Note Since solution properties vary considerably and non linearly with type and percentage of additive Ground Loop Design does not include detailed automatic antifreeze information Generalized tables of data may be found in the Fluid Properties tables The data in these tables are from IGSHPA manuals and the CRC engin
10. Loads image above indicates the entire hour by hour loads for an entire year for both heating and cooling are distilled down to five key values These values include four time periods 8am noon noon 4pm 4pm 8pm and 8pm 8am and the Annual Equivalent Full Load Hours GLD calculates based on hour by hour data However for simplification average peak loads for the design day the day of heaviest usage in the year for both cooling heat gains and heating heat losses can be input for up to four separate times of the day A detailed description of how GLD determines the loads for each time period can be found in Chapter 3 of the User Manual Finally take a look at the days per week value which represents the STEP 2 8 occupation of the installation In the demo the school is only occupied during weekdays Input the following data wi e Days Occupied Per Week 5 0 demo sche SUMMARY So far we ve imported a Trane System Analyzer loads file o Be into GLD When we imported the file the data were transferred 15 LOADS AND PUMPS automatically into both the Import Loads window and the Average Block Loads module The Import Loads window opened so that we could examine the imported data and also so that we could have a chance to modify it if necessary Since we did modify the data we had to click the transfer button in the Average Block Loads module to transfer the data into the Loads Module GLD does the pump matching and the h
11. MBtu hr e June 7000 MBtu 60 MBtu hr e July 4000 MBtu 33 MBtu hr e August 2600 MBtu 22 MBtu hr e September 4000 MBtu 27 MBtu hr e October 23000 MBtu 145 MBtu hr e November 37000 MBtu 210 MBtu hr e December 55000 MBtu 300 MBtu hr Import Loads Window Modified Heating Data Notice that the total annual MBtus and the Full Load Hours have increased accordingly You also can calculate the Full Load Hours by clicking the Modify button A new window the Equivalent Hours Calculator will open up 13 LOADS AND PUMPS zmizi m Annual Equivalent Full Load Hours Peak Hourly Load MBtu hr Monthly Total Loads MBtu January February 108000 March 54000 April 20000 May 9000 June 7000 July 4000 August 2600 September 4000 October 23000 November 37000 December 55000 Full Load Hours 1009 _ hr Close Calculate Clear ojo Equivalent Hours Calculator The Equivalent Hours Calculator is a handy tool included with GLD to help you calculate the full load hours Notice that the peak hourly load the monthly total load and the full load hours are identical to those in the Import Loads window In the future as you design with GLD use this tool when you want to quickly calculate full load hours For the time being please click the Close button to close the calculator Now we are ready to take our first detailed look at the Average Block Loads module On your screen you should
12. and colleagues or need to collaborate on a design with a coworker halfway around the world GLD offers a variety of communication tools to help you work effectively In this final chapter we will show you how to choose and print reports how to email project files so that colleagues can review modify or approve designs and how to take advantage of a few of the many other features that GLD offers Reports At any step in the design process you can choose to print out a variety of reports including five types of loads zone reports and two types of heat exchanger reports Zone Reports You should still have the Average Block Loads module open At the top of the module you will see a print icon Click on it and a dialog box will open that looks like this Z Zone Report Options Dialog x r Zone Report Selection Concise Form Equipment Detailed Form Loads Names Cancel Loads Report Choices 39 4 Step 7 REPORTS AND DESIGN TIPS Zone or loads reports include only the project information and data from the zones Five different zone reports exist containing complete or specific information about the zones Zone reports are representative of the actual installation rather than the heat exchanger portion of the system There five different zone report choices include e Concise Form Contains important info about loads and operational parameters of equipment e Detailed Form Contains al
13. reach an individual borehole length that is below 300 feet Your screen will look something like this HJ Borehole Design Project demo x Calculate Fluid Soil U Tube Pattern Extra kw Information m Calculation of Required Bore Lengths Calculate COOLING HEATING Total Length ft 8182 2 7735 1 Borehole Number 28 28 Borehole Length ft 292 2 276 3 Ground Temperature Change F 3 2 3 4 Unit Inlet F 90 0 50 0 Unit Outlet F 101 2 43 4 Total Unit Capacity MBtu Hr 593 7 624 3 Peak Load MBtu Hr 552 1 410 0 Peak Demand kW 50 5 31 5 Heat Pump EER COP 11 6 4 2 System EER COP 10 9 3 8 System Flow Rate gpm 138 0 102 5 Optional Cooling Tower Condenser Capacity MBtu hr 20 Cooling Tower Flow Rate gpm Cooling Range F Aen Annual Operating Hours hr yr Load Balance Cooling Tower Decreases Drilling Requirements With a 20 load balance in the cooling tower and 28 boreholes each borehole is now 292 feet long The cooling tower performance characteristics also can be found at the bottom of the screen Notice that at the 300 ft bore length the total required pipe lengths for cooling and heating are almost the same This is also reflected in the similarity of the reported long term ground temperature changes In a perfectly balanced system the lengths and ground temperature changes for cooling and heating are identical This balance point represents the maxim
14. 6 921 24775 861 239 1434 15 81 486 12 364 According to the import template above GLD requires the following data total heating and cooling in MBtus and peak heating and cooling in Mbtus hour The sample Excel data contains all this information in the proper format Note if the data is not in the proper format the user will have to modify the Excel file prior to importing the loads 17 LOADS AND PUMPS The next step is to select the data The highlighted data should look like this Note that only the data are highlighted Hours per Month Total Heating Total Cooling Peak Heating Peak Cooling Fi 10000 BTU 1000 BTU 1000 BTU hr 1000 BTU hr Mar 744 720 744 Copy the highlighted data to the clipboard Ctrl C then click the green Excel button in the Import Loads window The Import Loads window will look like this 3 Import Loads iol xj Generated By s Total Peak Monthly MBtu MBtu hr Load Factor January February Excel Data Are Imported Successfully The data are simultaneously imported into the Loads Module either Average Block or Zone Manager depending on which one the designers has opened 18 Step 3 LOADS AND PUMPS Summary We have learned how to easily import Excel data into GLD Two key points to remember are the following confirm that the Excel data are in the correct units and make sure the columns are in the appropriate order pr
15. Getting Started with Ground Loop Design Version 3 0 for Windows Powered By Gaia Pa 7 Geothermal www galageo com PMN SEAS Sao I olS lea wat Copyright Notice Ground Loop Design Version 3 0 Getting Started Guide 2006 Celsia LLC All Rights Reserved This guide as well as the software described in it is furnished for information purposes only to licensed users of the Ground Loop Design software product and is furnished on an AS IS basis without any warranties whatsoever express or implied This may be used or copied only in accordance with the terms of the included End User License Agreement The information in this manual is subject to change without notice and should not be construed as a commitment by Gaia Geothermal Gaia Geothermal assumes no responsibility or liability for errors or inaccuracies that may occur in this book Except as permitted by such license no part of this publication may be reproduced stored in a retrieval system or transmitted in any means electronic mechanical recording or otherwise without the prior written consent of Gaia Geothermal Other brand and product names are trademarks or registered trademarks of the respective holders Microsoft Excel Windows Windows 95 Windows 98 Windows NT Windows Explorer Windows ME Windows 2000 Windows XP Trane and Trane System Analyzer are registered trademarks of Microsoft Corporation and Trane respectively Netscape Na
16. Pumplist gld in the Ground Loop Design pumps folder will be overwritten upon re installation If the user has added pumps other than those originally included with the program this file should be copied or moved to a backup directory prior to removal and re installation After re installation the Pumplist gld file can be returned to the Ground Loop Design Pumps folder or the desired contents can be added to the contents of the new Pumplist gld file using a simple text editor like Notepad exe Software License Dongle Your GLD software license is stored on the Aladdin USB dongle that came with your program This dongle enables you effortlessly to transfer GLD from one computer to another Please be careful not to misplace this dongle Lost dongles can not be replaced without the purchase of a new license If the dongle is not attached to your computer GLD will function as a trial version which is fully functional except for a few design parameters that are locked at certain values WELCOME TO GROUND LOOP DESIGN When you insert the dongle into a free USB port on your computer for the first time your computer most likely will recognize the dongle and after a few seconds the dongle light will turn on When it turns on your license will activate However if your computer indicates that the dongle is new hardware you have two options for installing the dongle driver How to Install the Dongle Driver Windows XP and Windows
17. Specifications at Design Temperature and Flow Rate FF Custom Pump Pump Name Cooling Heating Select Capacity MBtu Hr 0 0 0 0 Details Power kW 000 0 00 See EER COP 00 B 0 Flow Rate gpm 0 0 0 0 Partial Load Factor 0 00 0 00 Emo Unit Inlet F 85 0 50 0 aal ooo Pump Characteristics in the Average Block Loads Module With no pump currently selected the Custom Pump box is checked and all pump performance values are at 0 0 To select a pump click the Select button This is what you will see mHeat Pump Specifications at Design Temperature and Flow Rate Addison Horizontal 1 2 10 Ton HGY 7 Pump Name HGY 007 gt Select Pump Cancel Flow Rate 30 Unit Inlet F 85 0 50 0 Pump Selection in the Average Block Loads Module In this screen you can choose a manufacturer pump series and pump name and then click the Select Pump button Note that performance specification data for all the heat pumps in the GLD heat pump database can be accessed through the Heat Pump Module To access this module click on the Edit Add Heat Pumps choice under the Heat Pumps menu item that can be found at the top of the GLD program above the main program icons For this demonstration please choose e manufacturer Florida Heat Pumps e pump series EV Series e pump name EV048 Click on the Select Pump button The screen now looks like this 20 LOADS AND PUMPS mH
18. Total Length ft 8182 2 Borehole Number 28 Borehole Length ft 292 2 Ground Temperature Change F 3 2 Unit Inlet F 90 0 Unit Outlet F 101 2 Total Unit Capacity MBtu Hr 593 7 Peak Load MBtu Hr 552 1 Peak Demand kW 54 1 Heat Pump EER COP 11 6 System EER COP 10 2 System Flow Rate gpm HEATING Optional Cooling Tower Condenser Capacity MBtu hr Cooling Tower Flow Rate gpm Cooling Range F Annual Operating Hours hr yr i DAR DOA N NO TA R Load Balance The Design is Complete 37 HEAT EXCHANGER DESIGN Note Notice that the System EER COP is adjusted to reflect the additional energy required by the cooling tower pumps Summary In this chapter we learned how to link the loads and heat exchanger modules how to input heat exchanger design parameters and how to optimize a design by modifying parameters including hybrid cooling tower parameters GLD also contains Horizontal and Surface Water Design modules explained in Chapters 5 and 6 in the User Manual which you can use in the same way as the Vertical Borehole module In the next chapter we will show you how to print reports and email project files as well as how to begin taking advantage of some of the more powerful GLD features 38 4 REPORTS AND DESIGN TIPS Chapter Reports And Design Tips hether you have finished your design and want to send customized reports to vendors clients
19. a Does GLD Need GLD is capable of processing hour by hour loads data for both the cooling and the heating sides for an entire year However to save time when inputting the data designers only need the following minimum data to begin using the program Note that the more detailed the loads data are the more accurate the final design will be Minimum Loads Data Requirements for the Average Block Module e Total heating and cooling loads for each month of the year in MBtu or kWh e Peak hourly heating and cooling loads for each month of the year in MBtu hr or kW Minimum Loads Data Requirements for the Zone Manager Module e Total heating and cooling loads for each month of the year for each zone in MBtu or kWh LOADS AND PUMPS e Peak hourly heating and cooling loads for each month of the year for each zone in MBtu hr or kW GLD uses these data both to match pumps to loads and to determine the appropriate length of the heat exchanger The mathematical model that GLD uses is described in great detail in the User Manual Briefly GLD uses the loads data to determine hourly monthly and annual heat pulses into the ground The hourly heat pulse is based on the peak hourly heating cooling loads The monthly heat pulse is related to a monthly load factor which is calculated in the following method Total heating or cooling loads for a given month Peak hourly heating cooling load for a given month x number of hours in that m
20. d the peak hourly MBtu for the year At this step in the design it is possible to modify the imported cooling and or heating loads data Click on the Heating button at the bottom of the Import Loads window It will look like this Ejimporttoads ISTE m Import Data Filename Sample gti Generated By Trane Trace 700 g Total Peak Monthly MBtu MBtu hr Load Factor January 6402 0 February March April May June July August September October November December Total Max Full Load Hours 54 hr _ modiy Import Loads Window Heating In this step you will modify the imported heating loads data GLD offers designers flexibility at every step in the design process and this data modification capability is just one example of that flexibility Modify the imported data by inputting these values in the appropriate Total and Peak boxes e January 90000 MBtu 370 MBtu hr e February 108000 MBtu 410 MBtu hr e March 54000 MBtu 340 MBtu hr LOADS AND PUMPS After inputting this modified data the heating side of the Import Loads window will look like this Import Data Filename Sample gt1 Generated By Trane Trace 700 Total MBtu 3 a January February August September October November December Total Max MBtu hr Lo Peak Monthly ad Factor oar Full Load Hours hr _ Modify Close Cooling Heating e April 20000 MBtu 150 MBtu hr e May 9000 MBtu 70
21. eat Pump Specifications at Design Temperature and Flow Rate Cooling Heating Select Capacity MBtu Hr 552 1 562 8 Custom Pump Pump Name Details Power kW 44 17 36 68 Clear EER COP 125 W 45 Flow Rate gpm 138 0 123 0 Partial Load Factor 1 00 0 87 Flow Rate 3 0 jae Unit Inlet F 85 0 50 0 Selected Pump Performance Characteristics Click on the Details button to see details about the selected EV048 pump mHeat Pump Specifications at Design Temperature and Flow Rate Pump Manufacturer Florida Heat Pump Aetna Pump Series EV Series Pump Type Water to Air m Inlet Air Temperatures and Flow Rate Load EAT Cooling WB 67 0 F Heating 0B 70 0 F Flow Rate 3 0 CAAA Unit Inlet F 85 0 50 0 Selected Pump Details This screen displays details about the selected pump It also displays the load side Entering Air Temperature EAT for both cooling and heating GLD employs an accurate system for modeling heat pump performance Both source and loads side factors affect heat pump performance and GLD models these factors Users can modify the EAT as necessary for specific design applications In this demonstration the EAT values will not be modified More information about how GLD models heat pumps can be found in Chapter 2 of the User Manual Click the Return button to go back to the original view 21 LOADS AND PUMPS Heat Pu
22. eat exchanger design based only on the loads data in the Loads module and not on the data sitting in the Import Loads window Therefore we had to transfer the modified data into the Average Block loads module Excel Data How To Get Excel Based Loads Data Easily Into GLD Designers oftentimes receive loads data in Excel spreadsheets GLD has an Excel import function to handle this situation In this section of the Getting Started Guide we will explain the general procedure for importing Excel data and then work through an example The easiest way to import data from an Excel file is by using the Import Loads command found under the Loads menu which is located at the top of GLD Select Import Loads and a empty Import Loads window will appear lx r Import Data l Filename Generated By Total Peak Monthly MBtu MBtu hr Load Factor January 9 0 0 0 February 0 0 ojo March April May June July August September i 0 0 October 0 0 November 0 December oj 0 0 0 Totana 0 LO cow Full Load Hours km hr Modify cee _ cooing Hens o o o o o o o o o o 9 2 9 o o clo o oj o Empty Import Loads Window The next step is to prepare the data in the Excel file so that it matches the format that GLD expects This is an important step If the designer fails to follow this step data will not be i
23. eering handbook The designer must manually enter the desired values in the input text boxes For this demo input the following values into the Fluid panel e Cooling Inlet Temperature 90 F e Heating Inlet Temperature 50 F e Fluid Type 10 Methanol Note Click on the Check Fluid Properties button found at the bottom of the Fluid panel and select Table I Densities and Specific Heats for Various Solutions to find the following values for a 10 methanol solution e Specific Heat 1 022 e Density 56 448 We are now ready to perform our initial calculation Click on the Calculate tab to open the Calculate panel Then click on the Calculate button Your screen should look something like this 33 STEP 5 13 HEAT EXCHANGER DESIGN AH Borehole Design Project demo x Calculate Fluid Soil U Tube Pattern Extra kw Information m Calculation of Required Bore Lengths COOLING Total Length ft Borehole Number Borehole Length ft 10829 0 20 541 5 Ground Temperature Change F 3 0 Unit Inlet F 90 0 Unit Outlet F 101 2 Total Unit Capacity MBtu Hr 593 7 Peak Load MBtu Hr 552 1 Peak Demand kW 50 5 Heat Pump EER COP 11 6 System EER COP 10 9 System Flow Rate gpm m Optional Cooling Tower Condenser Capacity MBtu hr Cooling Tower Flow Rate apm Cooling Range F Annual Operating Hours hr yr Load Balance The Initial Calculation
24. er 1o OE Backfill Grout Information 63 C Along Outer Wall Thermal Conductivity 0 85 stu h ft F Borehole Diameter Borehole Diameter 5 00 in zman U Tube Information The U Tube panel contains information related to the pipe and bore The main purpose of the panel is to obtain a value for the borehole thermal resistance The thermal resistance calculation takes into account the pipe parameters and positioning the borehole diameter and the grout thermal conductivity If desired an experimentally determined value of the borehole resistance also may be entered into the textbox which then overrides all calculations Note By pressing the Check Pipe Tables button the Pipe Properties tables will open Note The radial pipe placement can be one of the following e Close together 1 8 average distance between the pipes e Average pipes are centered at a point halfway between the wall and the center of the bore e Along outer wall pipes are along the outer wall as is the case when Geoclips are used in the installation process Note The Double U tube configuration at this stage is added more for reference than for practical use Currently the values Ground Loop Design uses are based on experimental data and a new theoretical model accounting for a lower pipe and convective resistance and a larger displacement of the grout Designers should be aware of th
25. ferring it into GLD This process will be explained below Users with significant residential but limited commercial design experience should note that commercial applications require more detailed data than that with which they may be familiar GLD only outputs good results when the user inputs good loads data How Do I Get The Loads Data Into GLD After calculating or receiving the appropriate loads data there are three easy ways to get the data into GLD e GLD can automatically import the output files from programs such as the Trane System Analyzer e GLD can import the loads data from an Excel spreadsheet provided that the loads data follows a prescribed format more on this below e GLD can accept input directly into the loads screen module dialogue boxes Each of the three methods is explained below For the demonstration project please follow the first method Importing Loads Data From Commercial Loads Analysis Programs For the demo project we will import a Trane System Analyzer file into the Average Block loads screen Open up the GLD program You will see the program desktop also known as the Design Studio Near the top of the program you will see a row of icons The icon for the Average Block Loads module looks like this Click on the icon The Average Block Loads module is now open It looks like this LOADS AND PUMPS A Average Block Loads IOl x f e No load information entered Flow Rate 3
26. individual heat pump data in hpd files If you enter data for a new heat pump it will be saved in the Ground Loop Design pumps directory You can email these small hpd files to coworkers or other users of GLD They can then put the file in their pumps folder and begin using the pumps More information can be found in the Preface and Chapter 2 of the User Manual Concluding Remarks If you have questions about or suggestions for the program please contact your distributor Do you need a particular design feature that GLD does not currently offer Let us know and we will do our best to include it in future versions Thank you for choosing Ground Loop Design 43
27. ior to copying the data onto the clipboard Manually Inputting Data Into The Average Block Loads Module Loads can be entered directly in the individual loads data time slots in the Average Block Loads module If only one peak value during the day is provided to the designer it can be entered into one or several of the time slots depending on how the loads will be expected to change during the course of a day Slightly reduced values can be added for off peak hours if the building still will be in operation but not at full load Insignificant time slots can be left at zero If only cooling or only heating loads data are to be used all of the non used slots should remain as zeroes Only the side with the loads provided will be calculated How Do Choose A Pump With the Average Block Loads module the user selects a single pump type from the GLD Heat Pump Database information about the built in and fully modifiable Database can be found in the full User Manual to approximate the average characteristics of the installation For example if the designer is planning to use the highest efficiency pumps a pump in a series with a higher coefficient of performance COP might be chosen over a lower efficiency pump If specific pump characteristics are required they can be input directly overriding the automatic functions To choose a pump look at the bottom half of the Average Block Loads module 19 LOADS AND PUMPS mHeat Pump
28. is fact and remember that a single U tube is the standard option 30 HEAT EXCHANGER DESIGN In this demo input the following values e Pipe Size lin e Pipe Type SDR11 e Flow Type Turbulent e Radial Pipe Placement Average e U tube Configuration Single e Borehole Diameter 5 00 in e Thermal Conductivity 1 0 Notice that the borehole thermal resistance changes automatically as you modify the pipe size and the thermal conductivity After we complete the initial design we will return to this panel to modify other parameters Now please click on the Soil tabbed panel You should see the following screen AH Borehole Design Project 1 x Calculate Fluid Soil U Tube Pattern Extra kw Information r Soil Temperatures and Properties Undisturbed Ground Temperature Ground Temperature 62 0 F Soil Thermal Properties Thermal Conductivity 1 30 Btu h ft F Thermal Diffusivity J 0 75 ft 2 day Diffusivity Calculator Check Soil Tables Soil Panel Input parameters relating to the soil are located in the Soil panel as shown above These include the average ground temperature and the soil thermal properties Since thermal conductivity has a particularly large effect on the bore length calculations it should be determined with care through in situ tests or comparisons with other projects installed in the local vicinity 31 STEP 5 9 STEP 5 10
29. l info for every zone and a full explanation of the listed parameters e Equipment List Contains the equipment for each zone This report is ideal for engineers or contractors who require only equipment details e Loads List Contains the loads at different times in the day for each zone e Names List Contains the full reference names of every zone the zone number and pump information This report is useful for when a project has many zones Explore the different reports and print one out Notice that the project information you entered in the Information panel of the Borehole Design module appears in all the reports Project Reports Now look at the row of icons at the top of the GLD program Find the print icon and press it if you cannot click on the print icon first click the mouse within the Borehole Design module window This is what you will see Project Report Options Oj x Project Report Selection _ pretecesenensnsssensssesnenseneny Reovencscscessscecssscncovececes Detailed Form OK Cancel Project Report Options The two different project reports include 40 REPORTS AND DESIGN TIPS e Concise Form Contains essential project info while excluding comments e Detailed Form Contains full project info Choose to print a detailed form and take a look at it Sharing Project Files With Colleagues GLD saves zone files from the Loads modules and project files from
30. m a CD or downloaded version Initial Installation The installation should start automatically when you put the CD into the computer If it does not explore the CD drive and click on the Setup exe file T demo continues on page 9 WELCOME TO GROUND LOOP DESIGN included on the disk For the downloaded version click on GLDSetup exe to start the installation procedure The program is set to install in the folder Main Drive Program Files Gaia Geothermal Ground Loop Design If desired the user can specify a different location during the installation sequence The full GLD user manual is installed on you computer when you install GLD You can access it by going to START Program Files Ground Loop Design Manual The full manual contains extensive reference information and a full description of the entire program Reinstallation If the user re installs or replaces the software with a more recent version the user either can uninstall the program see Note below or can just update a current version versions subsequent to Version 2 0 To completely remove a version go to the Windows Start Menu gt Settings gt Control Panel gt Add Remove Programs and choose to remove Ground Loop Design After removing the program please conduct the new installation as described above As long as the user does not manually delete folders existing work files pumps and zone files will not be affected NOTE The file
31. mp Specifications at Design Temperature and Flow Rate J Custom Pump Pump Name Cooling Heating Select Capacity MBtu Hr 552 1 562 8 Power kW 44 17 36 68 Details Clear EER COP 125 W45 Flow Rate apm 138 0 123 0 Partial Load Factor 1 00 0 87 Flow Rate 3 0 lames Unit Inlet F 85 0 50 0 oO Selected Pump Performance Characteristics Users now have the opportunity to modify system flow rates unit inlet temperatures and pump performance parameters Note that when we design the vertical borehole heat exchanger in the next chapter you will have the opportunity to modify the flow rate and unit inlet temperatures For the time being use the following values e Flow Rate 3 0 gpm ton e Cooling Inlet Temp 85 F e Heating Inlet Temp 50 F Note that if you want to use metric units just click on the English Metric units conversion button Ty bft It can be found at the top of the GLD program at the very right end of the row of icons In addition users can manually override any performance values by simply clicking in the appropriate dialog box and typing in a new value If you do this the custom pump box will become checked automatically to remind you that you have modified the standard data Modifying the standard pump data is useful when you intend to use a customized pump Also some designers modify the Partial Load Factor by dropping it down from the idealized value of 1 0
32. mported correctly GLD expects the Excel data to be in the following column order and units 16 LOADS AND PUMPS note that Ground Loop Design can accept a maximum of 12 data rows per column Month Total Heating Total Cooling Peak Heating Peak Cooling 1000 BTU 1000 BTU 1000 BTU hr 1000 BTU hr January December o To S To import the Excel data simply highlight the four columns in the Excel spreadsheet and copy them onto the clipboard Ctrl C Note highlight only the numeric data DO NOT highlight the column and row descriptions Then in the Import Loads window click on the green Excel icon found near the top of the Import Loads window The data will be imported Data can be modified if necessary and transferred into the loads modules following the method described in step 2 6 above Note that it is possible to import a single column of data Following the column order listed above put the single column of data in the correct position Fill the remaining columns with zeros and then copy all four columns to the clipboard Now we are ready for a specific example of how to import loads from an Excel sheet Suppose a client sends you the following data Total Cooling Peak Heating Peak Cooling E se UEO i 1000 BTU 1000 BTU 1000 BTU hr 1000 BTU hr 3324 0 1268 3324 15 81 11185 3324 399 304 131659 2789 833 1803 555 62255 2162 927 1074 876 208745 46 204 1886 659 Aug 164235 1565 797 150608 202
33. ndicating that the two modules are no longer communicating It looks like this Ci STEP 4 4 Push the link button again to reestablish communications Now That My Loads Data Are Linked To The Borehole Designer How Do Start Step 5 ee Designing The Borehole Design module allows the user to enter various parameters with respect to the desired vertical borehole system using a tabbed series of panels as seen below Calculate Fluid Sail U Tube Pattern Extra kw Information Borehole Design Panel List Users generally start designing from the Information panel and then work their way to the left In this demo we are designing a loop field for a building that has a number of small identical rooms Just as a reminder we entered the loads into the Average Block Loads module We chose to use the Average Block Loads module instead of the Zone Manager because the Average Block Loads module is ideally suited for situations in which you want to a start designing quickly and or b use the same pump throughout most of the design Click on the Information tab to open the Information panel Any STEP 5 0 information you type in this panel will be included in all reports Reports will be introduced in Chapter 4 In the Information panel please enter the following data STEP 5 1 e project name Gaia Headquarters e clientname Your Choice e address Your Choice 26 HEAT EXCHANGER DESIGN Now click on the Extra kW panel
34. ng Started Guide in the next 25 minutes you will create your first design and also will learn how GLD can help you design faster and more effectively Thank you for your interest in GLD We think you will enjoy the program GLD Features FULL POWER 3 Types of Heat Exchangers 2 Types of Loads Inputs Vertical e Horizontal Surface Water Zone by Zone Average Block The professional version of Ground Loop Design includes three design modules one for vertical borehole one for horizontal and one for surface water pond lake etc installations By combining designs and the built in cooling tower sizer users can quickly create hybrid systems GLD also includes two loads modules one for average block loads and one for detailed zone by zone loads Both can be used to manually or automatically select from hundreds of included water to air and water to water heat pumps The loads data can be shared between modules using Ground Loop Design s unique linking system In addition data from external loads WELCOME TO GROUND LOOP DESIGN programs the Trane System Analyzer for example as well as from Excel files can be imported conveniently into the loads modules COMPLETE CUSTOMIZATION Pumps Data Sheets Reports Help Files Because of the extensive customization and override features included in the software Ground Loop Design is suited ideally for both standard and non standard applications which can involve significant variation
35. oes GLD Have Both Average Block And Zone Loads Screens Modules GLD offers two different loads input systems to match the widest possible range of users needs The following summarizes the benefits of and the differences between the two loads screens modules Average Block Loads Module The Average Block Loads module offers a rapid method of entering whole systems information for users who do not desire to input the loads data for a fully zone divided installation Rather than matching specific pumps to each zone the Average Block Loads module uses a particular user defined style of pump or COP and matches it in an average way to the entire installation Use The Average Block Loads Module When e You want to design the heat exchanger quickly and or LOADS AND PUMPS e You intend to primarily use one type of pump for the entire installation and or e You have total system loads data but not zone by zone data Zone Manager Loads Module The Zone Manager Loads module is provided for designers who desire a full analysis capability Loads are input as separate zones and each zone is matched with a particular pump This mode is more useful when users require thorough designs Use The Zone Manager Loads Module When e You intend to need to match specific pumps to specific zones and or e You intend to design systems with both water to water and water to air pumps and or e You have loads data for each zone What Loads Dat
36. of the row of icons Pump Power Calculator Click on the Pump Power Calculator button to open the calculator It looks like this F Pump Power Calculator 5 x Pump Power Required Pump Power hP Pump Head 50 0 ft hd Flow Rate 100 0 gpm Pump Efficiency 80 0 Pump Power Calculator If the pump efficiency system flow rate and head loss are known the Pump Power Calculator can be used to determine the pump power Click on the Close button For this demo we will input the following values in the Extra kW Panel e Pump Power 2hp e Pump Motor Efficiency 85 e Additional Power 1 Kw e Cooling Tower Inputs 0 0 for all After we finish the basic design we can decide whether or not to use a cooling tower If we decide to use a cooling tower we can come back and input the appropriate values later Now click on the Pattern tab This is what you will see 28 HEAT EXCHANGER DESIGN Hj Borehole Design Project 1 x Calculate Fluid Soil U Tube Pattern Extra kw Information r Ground Field Arrangement Vertical Grid Arrangement Number of Rows Across 6 Number of Rows Down 4 r Separation Between Vertical Bores Borehole Separation J 20 0 ft m Boreholes per Parallel Circuit Number of Bores per Parallel Circuit 2 TW Modeling Time Period Prediction Time 10 0 years Pattern Panel Information pertaining to the gr
37. ommunication problems while working in multiple languages Design Tips Congratulations You now know enough about GLD to begin designing world class projects with efficiency and ease Below you will find a list of suggestions for further exploration and design success After inputting loads and selecting pumps in a loads module open up two new heat exchanger design modules Click on one design module to activate it and then click on the link button Then click on the other design module to activate it and once again click on the link button Now both design modules are linked to the same loads data Now you can compare two designs at the same time If you have data in only metric units but want to work in English units or vice versa click the English metric units conversion button Enter the data in the units you have and when you are done click the conversion button again Now all your data is in the format with which you want to work You can also print out reports in different units following the same procedure With the Zone Manager Loads module see the User Manual chapter 3 you choose heat pumps in several different ways a select a manufacturer and let GLD do the sizing work for every zone b select different manufacturers for each zone and let GLD size them c manually select manufacturers and pumps for non standard applications d combine methods a b and c Compare and contrast different manufacturers and heat pumps
38. onth The annual heat pulse calculation is known as the annual equivalent full load hours The full load hours is calculated in the following way Total heating cooling for the year Peak hourly heating cooling load To put it in a less mathematical way full load hours is the number of hours a system would have to run continuously at its peak hourly rate to reach its total annual heating cooling loads For example if the peak hourly cooling load is 100Mbtu hr and the total annual cooling load is 1000Mbtu the full load hours is 1000Mbtu 100Mtu hr 10 hours The full load hours nomenclature is nothing more than a shortcut for representing total annual heating cooling loads The peak hourly loads monthly load factors and the full load hours are all used by the program This nomenclature may seem a bit confusing initially but after designers become accustomed to it they appreciate the time it saves them if and when they have to manually input loads data into GLD It s much faster than inputting hour by hour loads for an entire year Where Can Get The Loads Data GLD users oftentimes get their loads data from commercial loads calculation programs such as the Trane System Analyzer This type of program outputs data that are both detailed and in a format that GLD can import automatically On occasion however the output data needs as LOADS AND PUMPS to be manually manipulated in Excel prior to trans
39. ound field arrangement is in the Pattern panel This includes the vertical boreholes pattern the borehole separation the number of boreholes per parallel loop and the modeling time Note The separation between vertical bores value is the center to center distance between adjacent bores Note For the modeling time period ten years is used as a standard length of time for the ground temperature to stabilize although longer time periods may be entered if desired For this demo project input the following values e Number of Rows Across 10 e Number of Rows Down 2 e Borehole Separation 20 ft e Bores per Parallel Circuit 1 After we finish our initial design and determine what our total pipe and drilling requirements are we will be able to come back to this screen and modify the input values Now click on the U Tube tab The screen will look like this 29 HEAT EXCHANGER DESIGN Hi Borehole Design Project 1 xi Calculate Fluid Soil U Tube Pattern Extra kw Information m Pipe Size and Thermal Resistance Calculated Borehole Equivalent Thermal Resistance Borehole Thermal Resistance 0 227 h ft F Btu Pipe Parameters Pipe Resistance 0 106 h ft F Btu Check Pipe Tables Pipe Size 1 1 2 in 37 5 mm gt Outer Diameter 1 90 in SPEER LEAS Inner Diameter 1 55 in 9 Single Pipe Type SDR11 C Double Flow Type Turbulent X Radial Pipe Placement C Close Togeth
40. s in equipment loads and operational parameters for each zone in the design The user who may prefer to add his or her specific images or data sheets has the freedom to customize the data reference files EFFECTIVE COMMUNICATION English Units Metric Units Pro Reports Multilingual With instant direct metric English unit conversions and foreign language capabilities Ground Loop Design is a truly international program With Ground Loop Design communicating project parameters equipment requirements and loads data with coworkers partners and vendors anywhere in the world is efficient and easy Furthermore after designing a project it is effortless to email the small project and zone files to colleagues Why This Guide The primary purpose of this Getting Started Guide is to show you how to design quickly and effectively with GLD To meet this goal this guide will take you step by step through the design of a vertical borehole heat exchanger for a commercial building e Jn chapter 2 you will learn how to choose the appropriate loads module for the sample project After choosing a module you will discover how easy it is to get the loads into GLD Next you will learn how to match the pumps to the loads using GLD s automatic and manual pump selection options e After mastering the loads side of the program you will look at the heat exchanger side In Chapter 3 you will design a sample vertical borehole system for the projec
41. still have both the Import Loads and the Average Block Loads windows open Take a look at the Average Block Loads data Design Day Loads Design Day Loads Days Occupied Time of Day Heat Gains Heat Losses per Week MBtu Hr MBtu Hr 7 0 8 a m Noon 157 2 201 4 Noon 4p m 552 1 0 0 o mfe 4p m 8p m 157 2 0 0 Calculate Hours 8p m 8a m 157 2 0 0 Annual Equivalent Full Load Hours 1559 Average Block Loads Data 14 LOADS AND PUMPS Notice that the Annual Equivalent Full Load Hours is 1559 for cooling and 54 for heating In the Import Loads window however the full load hours for heating is 1009 The heating value in the Import Loads window is higher because we modified the data To transfer the modified data into the Average Block Loads module do the following e Push the Transfer button in the Average Block Loads module It is located right beneath Days Occupied per Week The heating full load hours value should have increased to 1009 just as we wanted it to do Your screen will look like this m Design Day Loads Design Day Loads Days Occupied Time of Day Heat Gains Heat Losses per Week MBtu Hr MBtu Hr 7 0 8 a m Noon 157 2 410 0 are Noon 4p m 552 1 110 9 Tanfer 4p m 8p m 157 2 110 9 Calculate Hours 8p m 8a m 157 2 110 9 Annual Equivalent Full Load Hours 1559 1009 Modified Average Block Loads Data As the Average Block
42. t 390 feet Since we increased the number of boreholes we cut the individual borehole depth Furthermore by increasing the spacing between boreholes we continue to maintain a long term ground temperature change of approximately 3 F However since we have not reached our 300 foot goal more optimization is required Click on the U Tube panel Change the following inputs e Radial Pipe Placement Along Outer Wall Go back to the Calculate panel and calculate again Each borehole should be down to approximately 350 feet in length From here there are a number of ways to continue optimizing the system In the final step of this demonstration we will assume the designer wants to add a cooling tower The cooling tower must have a large enough capacity so that individual boreholes are no longer than 300 feet deep With GLD this calculation is straightforward Click on the Calculate panel and look at the bottom of the panel r Optional Cooling Tower Condenser Capacity MBtu hr 0 0 0 Cooling Tower Flow Rate gpm 0 0 Cooling Range F 10 0 a fI ECN Annual Operating Hours hr yr 0 Load Balance Optimizing the Cooling Tower On the right side of the Optional Cooling Tower section notice that there is a Load Balance at 0 Begin dragging the balance to the right As you do so notice what happens to the cooling side length Keep dragging the 35 HEAT EXCHANGER DESIGN balance to the right until you
43. t using the loads data we import in Chapter 2 You can explore the horizontal design module and surface water module on your own as Step 1 WELCOME TO GROUND LOOP DESIGN e In chapter 4 you will learn how to print out professional reports that are as impressive as your designs The guide concludes with a series of tips that will help you take full advantage of the program The secondary purpose of this guide is to introduce you to some of the more advanced features of the program A complete description of the program can be found in the User Manual The following icons appear throughout the guide T This icon appears in the left margin of this guide at the beginning of every major step in the design process If you want to focus your time mainly on learning how to design STEP 1 just follow these icons step by step through the sample design This icon appears in the left margin when this guide offers more detailed information about GLD With no further ado let s get started First we will install the program System Requirements A full installation has the following minimum hardware requirements e 32MBRam e 50 MB hard disk space 100 MB recommended Ground Loop Design has the following software requirements e System running under Windows 9X ME NT 2000 XP e Netscape Navigator or Internet Explorer Installation Procedure This section describes the installation procedure for Ground Loop Design fro
44. that is directly to the left of the Information Panel This is what you will see fii Borehole Design Project 1 eS xi Calculate Fluid Soil U Tube Pattern Extra kW Information Additional Power Requirements Pump Power Calculator m Circulation Pumps Required Input Power 0 0 kw Pump Power 0 0 hP Pump Motor Efficiency 80 m Optional Cooling Tower Pump Fan Required Input Power 0 0 KW 0 0 kw Power 0 0 hP 0 0 hP Motor Efficiency 85 8 Additional Power Requirements Additional Power 0 0 kw Extra kW panel The top entry box Circulation Pumps is for the energy required by the system circulation pumps The middle entry box Optional Cooling Tower is for the energy required by a cooling tower if used The lower entry box Additional Power Requirements is for all other elements besides the heat pump units in the system that may require energy input Generally cooling tower inputs are left at zero initially and then modified once the program suggests the cooling tower size and flow rate Note To make a kilowatt entry in the Pump Power box switch to metric units enter the kilowatt value and then return to English units You can do this by clicking on the metric English units conversion button Tiy trt 27 HEAT EXCHANGER DESIGN This button can be found near the top of the program at the far right end
45. um cooling towercapacity that could be added maximum reduction of pipe length required for cooling while still having enough installed pipe to fully satisfy the heating requirement In this example the actual balance point occurs at a Load Balance of about 22 with a long term temperature change prediction of about 3 2 degrees Fahrenheit 36 STEP 5 17 STEP 5 18 as demo continues on page 39 HEAT EXCHANGER DESIGN The last step now is to incorporate the extra kW requirements for the cooling tower into the design Click on the Extra kW panel and modify the Optional Cooling Tower pump and fan power requirements These values will be used to calculate overall system COP which can be found on the Calculate panel Modify the following values e Cooling Tower Pump Power 2 0hP e Cooling Tower Pump Motor Efficiency 85 e Cooling Tower Fan Power 2 0hP e Cooling Tower Fan Motor Efficiency 85 This is the final step Go back to the Calculate screen and calculate the updated results You will notice when you hit the calculate button the Cooling Tower load balance returns to 0 Find a load balance that brings each borehole down to a 300 ft depth After you do that your design is complete Congratulations Your calculate screen should look like this now ij Borehole Design Project demo x Calculate Fluid Soil U Tube Pattern Extra kw Information m Calculation of Required Bore Lengths Calculate COOLING
46. vigator is a registered trademark of Netscape Corporation The Ground Loop Design Version 3 0 Getting Started Guide Originally printed in April 2006 Printed in USA Part No GGENG 1005 Visit our Web site at http Awww gaiageo com Table of Contents 7 Step 1 al Step 2 7 Step 3 7 Step 4 jar Step 5 CHAPTER 1 Welcome To GLD GLD Features Why This Guide System Requirements Installation Procedure Software License Dongle CHAPTER 2 Loads and Pumps Why Two Loads Modules What Loads Data Does GLD Need Where Can I Get The Loads Data How Do I Get the Loads Data Into GLD How Do I Choose A Pump CHAPTER 3 Heat Exchanger Design What Is The Studio Link System How Do I Start Designing BWWYNeE 24 24 26 CHAPTER 4 Reports and Design Tips Reports Sharing Project Files Design Tips Concluding Remarks NOTE To start designing immediately begin at STEP 1 and continue through STEP 7 39 a Step 6 and 7 39 41 42 43 WELCOME TO GROUND LOOP DESIGN Chapter Welcome To Ground Loop Design 7 elcome to Ground Loop Design GLD Gaia Geothermal s comprehensive Geoexchange design software GLD offers engineers and designers a suite of rapid user friendly customizable and accurate design optimization tools With GLD designers spend less time designing and more time offering competitive proposals installing systems and satisfying customers As you progress through this Getti
47. w Rate gpm 138 0 102 5 Partial Load Factor 0 93 0 68 Flow Rate 30 nee Unit Inlet F 85 0 50 0 Average Block Loads Module Ready for Heat Exchanger Design 23 HEAT EXCHANGER DESIGN Chapter Heat Exchanger Design surface water heat exchanger design modules As you continue with the vertical heat exchanger design you will begin to see how the modular nature of GLD offers powerful design assistance modular meaning the Average Block loads module is a separate and independent module the Vertical Borehole design module is a separate and independent module etc Although each module is stand alone and independent the modules communicate and share data with each T other via the Studio Link system l Round Loop Design GLD includes vertical horizontal and STEP 4 What Is the Studio Link System The best way to describe the Studio Link system is to demonstrate it STEP 4 0 Please open a new Vertical Borehole Design module You can do this by clicking on the Vertical Borehole icon It is the first icon to be found in the top left corner of GLD and looks like this T When you click it a new window will open in GLD This is the Vertical Borehole Design window or module It looks like this 24 HEAT EXCHANGER DESIGN HJ Borehole Design Project 1 x Calculate Fluid Soil U Tube Pattern Extra kw Information Calculation of Required Bore Lengths Calculate COOLING HEATING
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