LEADPlus 2014 Tutorial and User Manual
Contents
1. Flow Rate 3 0 gpmiton Unit Inlet F 12 Step 2 LOADS AND PUMPS Chapter How Do I Choose A Pump The Zone Manager Loads module offers three methods for selecting pumps e Automatic selection based on the active heat pump series e Manual selection from a list of all available pumps e Custom input of pump data In this tutorial we will have the program automatically select a heat pump from the active heat pump series By active heat pump series we mean that the user first selects a heat pump manufacturer and pump family the active series and then the program auto selects a pump from the family to match the loads Automatic selection based on the active heat pump series First select the active heat pump series by clicking on the HEAT PUMPS tabs as seen below When you do so a screen similar to the one below will become visible 13 LOADS AND PUMPS a Zone Manager Heat Pumps mHeat Pump Selection 4nd Design Load Temperatures Select Heat Pump Manufacturer 4nd Series WaterFurnace Premier P Series Pumps Available in this Series Design Heat Pump Inlet Load Temperatures Inlet Gir Temperatures Water to Air Pumps Cooling WB eth leas Heating DB 7b E Entering Water Temperatures Water to Water Pumps Cooling See lee Heating 100 0 F Heat Pump Series Selection In this panel you can select a manufacturer and heat pump family and view the pumps avai2. Circuit length Number of GHX circuits Fittings per circuit 4 GPM Circuit 30 23 ioo HDPESORII x 0 75 HDPE SDR 11 1 00 HDPE SDR 11 Next you must enter the number of GHX circuits you would like to use in the GHX and the size of pipe you are planning on using LEAD Plus will automatically split the total amount of pipe used into the number of equal length circuits you have selected in the drop down menu When designing a GHX you are trying to do two things e Maintain turbulent flow in the GHX circuits this means you want to maintain a Reynolds number greater than approximately 2 500 e Design a system with a low pressure drop to minimize pumping power Total system pressure drop at recommended flow rate and minimum flow rates 2 748 System Operation Reynolds numbers in GHX circuits at recommended and minimum flow rates Most people in the geothermal industry agree that a GHX should be designed to operate with a Reynolds number no less than 2 300 to 2 900 LEAD Plus shows a warning when the Reynolds number is less than 2 300 You can increase the Reynolds number by e Reducing the percentage of antifreeze e Reducing the GHX circuit size e Reducing the number of GHX circuits With the information you have entered in GHX PD module LEAD Plus develops a system pressure drop curve and a pump curve based on the pump selection you make in the drop down menus Two points are shown on the system curve the reco
3. Fluid Soil U Tube Pattern Extra kW Information Undisturbed Ground Temperature Ground Temperature 55 0 e Soil Thermal Properties Soil Type Heavy Soil Saturated Modeling Time Period F Prediction Time 10 0 years 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 type See the User Manual for the thermal conductivity and thermal diffusivity values associated with each listed soil type Since 25 STEP 4 10 HEAT EXCHANGER DESIGN thermal conductivity has a particularly large effect on the bore length calculations the soil type should be determined with care through in situ tests or comparisons with other projects installed in the local vicinity In addition the modeling time period can be modified here Note For the modeling time period ten years is used as a standard length of time for the ground temperature to stabilize although other time periods may be entered if desired For more information click the Button on the Soil panel For this demo input the following values into the Soil panel e Ground Temperature 55 F e Soil Type Heavy Soil Saturated e Prediction Time 10 years Now we are ready for the Fluid panel Please click on the Fluid tab Your screen will look like this la Borehole Design Project 1 Results Fluid soi U Tube Pattern Extra kw Information Des
4. 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 For this demo input the following values into the Fluid panel e Cooling Inlet Temperature 80 F e Heating Inlet Temperature 40 F e Fluid Type Propylene Glycol e Freezing Point 25 F We are now ready to perform our initial calculation Navigate to the Results panel and click on the Calculate button Your screen should look something like this 27 HEAT EXCHANGER DESIGN A Borehole Design Project 1 Results Fluid Soil U Tube Pattern Extra kii l Information COOLING HEATING Calculate Total Length ift Borehole Number Borehole Length ft Unit Inlet F Unit Outlet F Total Unit Capacity kBtufHr i Peak Load kKBtu Hr i Peak Demand ky Heat Pump EER SCOP System EER SCOP System Flow Rate fgorni 474 3 3 158 1 35 0 94 6 36 3 32 0 2g 15 5 10 9 3 0 439 6 4 246 2 40 0 34 0 47 9 40 0 3 8 4 0 3 1 10 0 The Initial Calculation The two columns on the Results 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 In this demo the heat exchanger is heating dominated as expected from the loads data Noti
5. CITT This box indicates that the two modules are linked and have bidirectional communication 20 T Step 4 HEAT EXCHANGER DESIGN Now click the unlink icon You will notice that the position and color of the light has changed indicating that the two modules are no longer communicating It looks like this CTT Push the link button again to reestablish communications Now That My Loads Data Are Linked To The Borehole Designer How Do I Start 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 Borehole Design Panel List Click on the Information tab to open the Information panel Any information you type in this panel will be included in printable reports In the Information panel please enter the following data e project name Gaia Headquarters e chlentname Your Choice e address Your Choice Now click on the Extra kW panel that is directly to the left of the Information Panel This is what you will see 21 HEAT EXCHANGER DESIGN Bil Borehole Design Project 1 a J Results Fluid Soil U Tube Pattern Extra kW Information Circulation Pumps Required Input Power o0 kW Pump Power 00 pP Pump Motor Efficiency or Oo Pump Power Calculator Extra kW panel The entry box Circulation Pumps is for the energy required by the system circulation p
6. English Metric units conversion button miy hft It can be found at the top of the GLD program at the very right end of the row of icons Now save the loads data Click on the floppy disk icon at the top of the Zone Manager 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 Zone Manager Loads module and selected a pump This is what your Zone Manager Loads module should look like 17 demo continues on page 19 LOADS AND PUMPS 4 Zone Manager Heat Pumps Loads b Oe fe B ea ge Untitled zon fone 1 zone 1 Loads Panel Reference Label Loads Information Maximum Loads Cooling Heating fkBtufHr kBtusHr3 320 W 40 0 Annual Running Time 0 100 Heat Pump Specifications at Design Temperature and Flow Rate Pump Mame Custom Pump Cooling Heating Guto Select Capacity kBtu Hr Power ki FER COP Flow Rate gor Partial Load Factor Select Flow Rate 3 0 gpmjton Unit Inlet F Zone Manager Loads Module Ready for Heat Exchanger Design 18 T STEP 3 HEAT EXCHANGER DESIGN CI i Heat Exchanger Design 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 so much flexibility Although each module is stand alone and independent the modules communicate and shar
7. been completed on the home this can only be your best estimate A drop down menu allows you select the type of construction that most closely matches the home you are designing a system for Wind affects the amount of infiltration into a home by creating an area of high pressure on one side of the home and a low pressure area on the opposite side If a home is located in a wide open prairie setting the infiltration is greater than if the home is in a well protected wooded area or surrounded by many other homes A drop down menu allows you to select the type of area the home is located in Building codes in many regions require that a ventilation system be installed in a new home Exhaust fans and intake fans must be installed to ensure that a certain amount of fresh air is introduced into the home Fresh air can be introduced directly into a home If the outdoor air temperature is very cold or very warm this will greatly affect the heat loss and heat gain of the home It has become common especially in areas affected by extreme temperatures for heating ventilation and air LOADS amp ENERGY ANALYSIS conditioning HVAC contractors to install heat recovery or energy recovery ventilation devices HRV or ERV These devices are typically designed to recover 60 to 85 of the heat from the air being exhausted to the outdoors and preheat the fresh air being introduced into the home To model how a home will operate enter the air flow in cubi
8. either system the cost of paying back the principle and the interest over the term you entered Then it adds the operating cost based on the information you entered in the Energy Cost module adds the annual inflation rate you entered and totals the two to calculate the total annual cost for up to a 30 year mortgage ee es sioe s22 C2 sa soo saae Ce sa soro 2 307 a siz s02 s2330 C s sar s1135 s2372 e s2 sieo 2 408 Co ar aa saat sF 47 e star sia se 10 siaar_ siste S263 Ti sa sass 92 502 e i sa sa S2633 2 sir size s2675 Se we Bd 25 4 CONFIGURING THE GHX After calculating the charts as shown above LEAD Plus also shows you and your client graphically the annual cost of either system Annual Cash Flow Comparison Between Natural Gas amp Geothermal System 7 000 6 000 5 000 4 000 Yes 2dU tsg cretese8 t aOHe VR Ewe BH BH BBWAA E Aa ase a BS w ae a O a gt gt D c Ww n 3 a a a v oD a o t re 2 a i o d a o O W 3 S lt Total Cost of Natural Gas System Cost Total Cost of Geothermal System CO2 Emissions With all of the data you have entered in the various modules LEAD Plus calculates the effect the geothermal system you have designed on the environment LEAD Plus includes a database for each state and province in the U S and Canada as well as the locations in Great Brit
9. how to print reports and email project files as well as how to begin taking advantage of some of the more powerful GLD features 29 u Step 5 STEP 5 0 REPORTS AND DESIGN TIPS Chapter Reports And Design Tips i 7 hether you have finished your design and want to send customized reports to vendors clients 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 one type of heat exchanger report Zone Reports You should still have the Zone Manager 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 Tone Report Options Dialog Fone Report Selection f Concise Form i Equipment Detailed Form Loads i Names Cancel Loads Report Choices 30 STEP 5 1 N ge ON STEP 6 0 STEP 6 1 REPORTS AND DESIGN TIPS Zone or loads reports include only the project information and data from the zones Five different zone reports exi
10. the same time Peak Cooling Load Mbtu hr C 449 Peak Heat Loss Mbtu hr run time in cooling mode run time in heating mo e Open GLD Residential When you click on the Zone Manager icon in the top left hand corner of GLD e The Zone Manager Screen will open 4 Zone Manager Heat Pumps Loads D Not linked or no load information entered Flow Rate 3 0 gpm ton Unit Inlet F 85 0 50 0 ooo e To start click on the New Zone icon i e Confirm that GLD is in the units format metric English that matches your loads data before you import You can convert between the two formats via this button tal e When the New Zone is open you will see an Excel icon When you click on this icon the information you ana fon LEAD PLUS will be transferred into GLD 11 LOADS amp ENERGY ANALYSIS In the following chapter you will learn how to use GLD to calculate the length of pipe required for the system you are designing 4 Zone Manager Heat Pumps Loads noe Bs saa 9 Zone 1 Loads Panel Reference Label Loads Information Maximum Loads Cooling Heating kBtusHr kBtu Hr 32 0 40 0 Annual Running Time 0 100 fal mHeat Pump Specifications at Design Temperature and Flow Rate Pump Name V Custom Pump as ra Cooling Heating Auto Select Capacity kBtusHr Power kv ace EER COP Details Flow Rate apm Partial Load Factor
11. GURING THE GHX m ea HeatPump2 GAA nas Petom Lor s5 Piping to Heat Pump ESo25 70 Heat Pump 3 Pipefrom Dtom 70 50 Maximum Heat Pump P D D Heat Pump hose amp fittings with greates PD Petom AwB 15 r poe e 2 Pipe fom Boc 125 01 iero e 10 2 Interior Piping Pipe from CtoD 7 0 50 1 25 HOPESDRI3 5 im w0 2 Configuration Pipe from EtoF 6o 50 1 00 HOPESORII o j a Pipefrom FtoG ms o firmes e 3 Pipe from GtoH 185 141 2oo Horesonizs w 5 2 When you have entered all of the dimensions and selected the type of pipe enter the length of pipe needed for the GHX in the way described for a single heat pump system ensuring the Reynolds number is high enough and the pressure drop is reasonable 38 ADDITIONAL FEATURES Chapter Additional Features in LEAD Plus LEAD Plus includes several additional modules to help you as a designer determine the most cost effective and environmentally system for your client They include ENERGY COST allows the designer to input the cost of various fuels electricity natural gas propane and oil in English or Metric units as well as the appliance efficiency to estimate the cost of providing heating cooling and domestic hot water to the specific home the data has been entered for ECONOMICS allows the designer to enter the estimated cost of installing a specific geothermal system as well as a selected electric of fos
12. LD Link GHX PI LEAD PLUS composed of seven design modules is designed to work with GLD Residential to provide a complete residential geothermal system design suite The design modules include e LOADS is a quick user friendly module designed to provide accurate heat loss and heat gain analysis for up to ten zones in a typical home based off of CSA standards The main objective of determining the loads accurately is to determine the heating and cooling capacity required for a home and the size of the ground heat exchanger GHX required LOADS allows the designer to enter the data required to estimate the effect of occupancy lighting and electrical equipment solar gains and building construction to more accurately determine the actual loads to the GHX e SUMMARY provides an overview of the building heating and cooling loads The summary tab provides an opportunity to enter a heat loss and heat gain calculated by another method and to enter the data required to calculate the domestic hot water consumption e ENERGY ANALYSIS draws on a climate database that includes more than 320 locations in the United States Canada Great Britain and across the world The bin method is used to estimate the energy consumption of a specific system in a specific home at a specific location The designer can select from hundreds of included heat pump models from a range of different manufacturers Additional models are constantly being added to the heat pump d
13. NERGY ANALYSIS LEAD PLUS includes a climate data base with hundreds of cities in the United States and Canada as well as other international locations The first step 1s to select the city or nearest city near the home you are working on Then enter the temperature you would like to maintain the home at in Summer and winter Select State or Province then select nearest city 7 Guelph ON EA Winter Indoor Setpoint za Winter Design Temp EE 4 Summer Indoor Setpoint Summer Design Temp i Walls Floors Windows amp Doors In the current version of the software the dimensions must be entered in feet and inches and temperatures must be entered in degrees Fahrenheit Hints about the type of data needed to calculate the heat loss gain accurately are indicated by small red triangles Comments pop up at cells with the red triangles when the cursor hovers over the cell When entering the dimensions of the exterior walls the software is looking only for the wall area that is exposed to the outdoor air for the zone you are working on The information that is needed is the length and height of the wall exposed to the outdoors Do not include any interior walls within the home This is true also for roof areas and floors exposed to the outdoors If there is no wall roof or floor exposed to the outdoors there is no heat loss and the cells should be left blank There are often areas where the wall of the home is exposed not directly to t
14. RING THE GHX LEAD Plus automatically enters the cost of operating the geothermal system you selected in the Energy Analysis module and when you select the fuel you want to compare it with it automatically enters the cost of operating the system and fuel you select Now you can work with your client and enter the information needed to customize the Economic Analysis for their situation It is often a more powerful tool if you allow your client to select the inflation rate of the fuel they want to compare with the inflation rate of electricity You now enter the cost of the geothermal system and the alternate system the interest rate if the system will be included in their mortgage If your client isn t borrowing money to install a system enter an interest rate greater than 0 and enter 0 in the cell asking for the term of the loan Note that different loan terms can be entered for the geothermal system and an alternate system and that you can enter the value of a utility or government incentive for the geothermal system LEAD Plus calculates a simple payback as well as a cash flow payback The simple payback simply calculates the number of years it will take for the savings realized from installing a geothermal system to pay back the difference in cost of an alternate system A more realistic method of calculating the payback is the cash flow method In the cash flow payback LEAD Plus calculates the annual cost of purchasing
15. Tutorial GLD LEAD PLUS Residential Version 2014 for Windows Ground Loop Desig Residential Edition IP nt eu l cds Ses ii Powered By www galageo com Copyright Notice Ground Loop Design LEAD PLUS Residential Version 2014 Tutorial 2014 Celsia LLC All Rights Reserved 2014 Geo Xergy Systems Inc All Rights Reserved This guide as well as the software described in it is furnished for informational purposes only to licensed users of the Ground Loop Design LEAD PLUS 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 Celsia LLC and LEAD Software Celsia LLC and Geo Xergy Systems Inc assume 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 Celsia LLC and Geo Xergy Systems Inc 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 W
16. age 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 WELCOME TO GROUND LOOP DESIGN LEAD PLUS 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 Tutonal The primary purpose of this tutorial is to show you how to design quickly and effectively with GLD LEAD To meet this goal this tutorial will take you step by step through the design of a vertical borehole heat exchanger for a mid sized residence In chapter 2 you will learn to calculate the heat loss and heat gain of a typical residence and determine the capacity of heat pump s required for the home You will also learn how to export the building heating and cooling loads into GLD to calculate the size of the GHX In chapter 3 you will learn how to match the pumps to the loads using GLD s automatic and manual pump selection options After mastering the loads side of the program you will look at the heat exchanger side In Chapter 4 you will design a vertical borehole system for the project using the loads data we import in Chapter 3 You can explore the horizontal design module and surface water module on your own In chapter 5 you will learn how to print out professional reports that are as impressive as your
17. ain that contains the information as published by these countries regarding the CO2 emissions produced in the production of electricity If electricity is produced by wind solar hydro electric power or nuclear very little carbon dioxide is emitted When electricity is produced by burning fossil fuels CO2 is emitted The amount of CO2 emitted varies with each state or province Burning natural gas or other fossil fuels to heat a home releases CO2 to the atmosphere How much is released depends on the efficiency of the appliance LEAD Plus calculates the CO2 emissions based on the information you have entered and the location 42 CONFIGURING THE GHX CO2 Emissions Comparison a 2 a D e o o Oo P3 E O oHesting aCooing oot Water 43 SAVING PROJECT FILES IN LEAD Chapter Saving Exporting Project Files It is often useful to save project files for future reference when you are working on a project over a few days or when your client has made some changes in the building LEAD Plus allows you to save the information from a specific file to a very small file that you can name with a project number or client information Small project files can be easily emailed to co workers for review or to add information Note that files should be exported and not saved If you have Microsoft Excel version 2007 the following screen shot illustrates the method of saving or expo
18. ata base e ENERGY COST allows the designer to input the cost of various fuels electricity natural gas propane and oil in English or Metric units as well as the appliance efficiency to estimate the cost of providing heating cooling and domestic hot water to the specific home the data has been entered for e ECONOMICS allows the designer to enter the estimated cost of installing a specific geothermal system as well as a selected electric of fossil fuel system and determine the simple payback for the system It also allows the designer to enter financial data needed to determine the cash flow payback for a specific system based on fuel inflation rates and mortgage rates for up to a 30 year term e CO2 provides the designer with the CO2 emissions from a specific system and compares it with the CO2 emissions from various fossil fuel systems that have been selected e GLD Link provides the designer with the information required by the GLD software to calculate the size of vertical horizontal or surface water GHX s WELCOME TO GROUND LOOP DESIGN LEAD PLUS e GHX PD allows the designer to configure the GHX to ensure that turbulent flow is maintained and select the circulation pump s required to maintain the appropriate flow for the system The designer can select the three most commonly used heat transfer fluids methanol ethanol and propylene glycol at various percentages and a range of minimum operating temperatures The volume of fluid a
19. attern and the borehole separation See the full user manual for information about the fixed borehole length design option Note The separation between vertical bores value is the center to center distance between adjacent bores For this demo project input the following values e Fixed Length Mode Off e Number of Rows Across 1 e Number of Rows Down 3 e Borehole Separation 20 ft After we finish our initial design and determine what our total pipe and drilling requirements are we will be able to modify these input values if necessary Now click on the U Tube tab The screen will look like this ES Borehole Design Project 1 Results Fluicl Soil U Tube Pattern Extra ki Information Pipe Parameters Fipe Size 1 1 4 in E 32 mim J Fipe Type SOR11 Flow Type Turbulent Borehole Diameter Borehole Diameter 5 00 in Backfill Grout Information Thermal Conductivity 0 50 9 Beoffh Fe ry U Tube Information 24 HEAT EXCHANGER DESIGN 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 In this demo input the following values e Pipe Size 1 1 4 in e Pipe Type SDR11 e Flow Type Turbulent e Borehole Diameter 5 00 in e Grout Thermal Conductivity 0 80 Now click on the Soil tabbed panel You should see the following screen BE Borehole Design Project 1 a Eg Results
20. c feet per minute CFM into the software and enter the percentage of heat recovery from the appliance manufacturer s specifications Often these appliances are controlled by a dehumidistat or timer that controls the fan speed In most installations the appliance may operate at high fan speed only part of the day The number of hours the appliance operates at high speed is directly affected by the lifestyle of the occupants In a residence where occupants are home most of the day and creating moisture by cooking showers etc the HRV will run more hours than it will in a home where the occupants leave for much of the day Again this is a judgement call How a home is used has an impact on the amount of energy required to heat the building as well as the cooling capacity required The occupants in a home the type and orientation of the windows and the lighting and appliances in the home all generate heat that provides a percentage of the heat heat that does not have to be produced by the heating system or extracted from the ground In other words how the home is built and used has an impact on the energy consumption required for heating and cooling the home This is referred to as internal gains To calculate the effect of the internal gains on the heating equipment selected LEAD PLUS requires some information about the number of occupants typically in the home and an estimate of the lighting and appliances in the zone you are design
21. ce that there are 3 boreholes in the Pattern panel we specified a 1 x 3 grid arrangement and that each borehole is about 246 feet long We now will quickly optimize the design STEP 4 13 In this demo we do not want to drill deeper than 200 feet Change the grid arrangement on the Pattern tab e Number of Rows Down 1 e Number of Rows Down 4 e Separation Between Boreholes 20 ft 28 STEP 4 14 demo continues on page 25 HEAT EXCHANGER DESIGN Click on the Calculate button again The individual borehole length has dropped to about 185 feet lj Borehole Design Project 1 Results Fluid Soil L Tube Pattern Extra kw l Information Calculate COOLING Total Length ift 473 6 Borehole Mumber 4 Borehole Length tt 118 4 Unit Inlet F 3 85 0 Unit Outlet F g4 8 Total Unit Capacity kBtuHr 56 3 Peak Load kBtu Hr 42 0 Peak Demand ikw 2 9 Heat Pump EER SCOP 15 5 System EER COP 10 9 System Flow Rate gomi 8 0 Optimized Design Results HEATING 739 3 4 184 9 40 0 34 0 47 9 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 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
22. designs The guide concludes with a series of tips that will help you take full advantage of the program In chapter 6 you will use the calculations generated in GLD to determine the amount of pipe needed to build the GHX to configure the GHX You will go back to LEAD PLUS to configure the GHX The information you will require Chapter 7 will show you some of the additional features in LEAD PLUS The Energy Cost module uses the data generated in the Energy Analysis module to compare the cost of heating and cooling the home with various fossil fuels or electric heat based on the efficiency of the appliance and the cost of energy in a specific region Chapter 8 will show you how to save and open files in LEAD PLUS The secondary purpose of this tutorial 1s to introduce you to some of the more advanced features of the program A complete description of the program can be found in the full User Manual The following icons appear throughout the guide WHAT ABOUT THE LOADS 5 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 See the full user manual for installation and license dongle information LOADS amp ENERGY ANALYSIS CI i Heating and C
23. e heat pump system design software GLD LEAD offers designers a suite of rapid user friendly customizable and accurate design optimization tools With GLD LEAD designers spend less time designing and more time offering competitive proposals installing systems and satisfying customers Together GLD LEAD provides a full set of design tools including loads calculations energy analysis and cost comparison cash flow payback a greenhouse gas emissions reduction calculator and a ground heat exchanger GHX configuration and circulation pump sizing tool As you progress through this Tutorial in the next 20 minutes you will create your first design and also will learn how GLD LEAD can help you design faster and more effectively Thank you for your interest in GLD LEAD Residential We think you will enjoy the program New in Version 2014 Ground Loop Design LEAD PLUS Residential Version 2014 add a range of features to the program including e Advanced hybrid design controls in the borehole and horizontal design modules now enable the designer to independently control the peak and total loads that transfer energy with the loopfield and the hybrid mechanical system Assuming that the designer has a good understanding of the building loads this new tool can significantly enhance hybrid system design accuracy WELCOME TO GROUND LOOP DESIGN LEAD PLUS LEAD PLUS Features H Loads Summary Eneray b Energy Cost Economics CO G
24. e data with each other via the Studio Link system What Is the Studio Link System The best way to describe the Studio Link system is to demonstrate it 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 When you click it a new window will open in GLD This is the Vertical Borehole Design window or module It looks like this 5 Round Loop Design includes vertical horizontal and surface 19 HEAT EXCHANGER DESIGN a 4 Pe Se Results Fluid Soil U Tube Pattern Extra kW Information EE Borehole Design Project 1 Project Information Date 1 3 2008 Project Start Date 13 2008 chet Name TO Address Line 1 Address Line 2 City Phone State Fax zip Email Comments New Vertical Borehole Design Module We first have to connect the data we entered in the Zone Manager 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 4 21 e H 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 the color may vary
25. he outdoors but to an unheated space such as a garage or to an unheated crawlspace In this case the dimensions of these walls or floors should be entered in the cells allocated for this Concrete floor 2 below grade p z i W Insert thickness of the oncrete slab on Grade perimeter concrete slab in inches Concrete Slab on Grade to grounds The insulation values of the different components of the home walls roof floors windows doors etc are selected from drop down menus Simply LOADS amp ENERGY ANALYSIS select the type of construction that most closely matches the home you are designing a system forU f there is a certain type of construction not included in the drop down menus please let us know 152 9 2 x 4 wood frame wall 2 x 6 wood frame wall 2 x 4 wood frame amp 2 foam 2 x 6 wood frame amp 2 foam 8 double wall const 10 double wall const Styrofoam block const 4 sandwich panel const 6 sandwich panel const Infiltration amp Ventilation Outside air produces a significant heating and cooling load on a home Outside air enters the home in two ways either by infiltrating through cracks around windows doors and other holes in the structure or it is introduced via a ventilation system Infiltration is affected by two things construction quality and wind Some types of home construction produce homes that allow very little outside air into the home Unless a blower door test has
26. heat pump data base and entered into the module LEAD Plus allows you to select from one to three heat pumps for one residential project and to calculate the pressure drop through the heat pumps internal piping and the GHX For the first example select a single heat pump a nominal 4 ton heat pump The recommended design is shown on the system diagram between the heat pump and the pump module Pump Module 12 0 gpm A Return from GHX Return run out Supply to GHX l Supply run out 34 as Step 7 STEP 7 0 CONFIGURING THE GHX The first step is to select the type and percentage of antifreeze you are using for your project As a higher percentage of antifreeze is used the fluid becomes more viscous Consequently higher flow rates are required to achieve turbulent flow in the GHX and the pressure drop becomes greater Antifreeze Selection Methanal GHX Fluid and Anitireeze Percentage 15 by volume f Operati ng Condition G Lowest expected operating tempe rature 30 F Freeze protection to You should also enter the lowest temperature you expect the system to operate at during the heating season Again as the fluid temperature drops the fluid becomes more viscous and more difficult to pump In some situations this may mean that a second circulation pump is required to achieve the flow rate required in your system After you have selected the fluid and minimum system operating temperature the le
27. 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 5 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 6 GLD contains a searchable database of information about the program Click on the Help dropdown menu and choose help 33 CONFIGURING THE GHX Chapter Configuring the GHX In chapter 5 you learned to work in GLD to calculate the amount of pipe your GeoExchange system will require The next step is to determine the configuration of the pipe in the ground In this chapter you will learn how the heat transfer fluid you select affects the configuration of the GHX how to select the number and length of pipe circuits determine the pipe size that should be used for the supply and return runouts and select appropriate pumps for the system The heat pump s selected in the Energy Analysis module are automatically carried forward into the GHX PD module The recommended and minimum flow rates recommended by the manufacturer and the pressure drop of the unit are taken from the
28. ign Heat Pump Inlet Fluid Temperatures Cooling 86 0 F Heating 40g F Design System Flow Rate Flow Rate 3 0 gpm ton Solution Properties Fluid Type Propylene Glycol Freezing Point 25 SE 12 9 by Weight Check Fluid Tables Fluid Panel The circulating fluid parameters may be entered in the Fluid panel 26 STEP 4 11 STEP 4 12 HEAT EXCHANGER DESIGN 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 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 Zone Manager Loads module once again Notice that the flow rate and the unit inlet temperatures at the bottom of the Zone Manager 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 Zone Manager Loads Module The Zone Manager Loads module cooling inlet temperature automatically updates itself along with the pump performance characteristics This connectivity saves designers much time While this
29. indows 2000 Windows XP Windows Vista Windows 7 windows 8 Trane and Trane System Analyzer are registered trademarks of Microsoft Corporation and Trane respectively Netscape Navigator is a registered trademark of Netscape Corporation The LEAD PLUS tool is a trademark of Geo Xergy Systems Inc The Ground Loop Design LEAD PLUS Residential Version 2014 Tutorial Originally printed in January 2014 Printed in USA Part No GGENG 1006 Visit our Web site at http Awww gaiageo com Table of Contents Step 1 Step 2 Step 3 Step 4 T Step 5 Step 6 CHAPTER 1 Welcome To GLD LEAD PLUS New in Version 2014 Features Why This Tutorial CHAPTER 2 Heating and Cooling Loads Energy Analysis Exporting Loads to GLD CHAPTER 3 Choosing Heat Pumps CHAPTER 4 Heat Exchanger Design What Is The Studio Link System How Do Start Designing CHAPTER 5 Reports and Design Tips Reports Sharing Project Files Design Tips 6 10 10 13 19 19 21 30 30 31 32 CHAPTER 6 Configuring the GHX 34 Step 7 CHAPTER 7 Additional LEAD Features 39 CHAPTER 8 Saving LEAD Files 44 NOTE To start designing immediately begin at STEP 1 and continue through STEP 7 WELCOME TO GROUND LOOP DESIGN LEAD PLUS Chapter Welcome To Ground Loop Design LEAD PLUS Residential N 7 elcome to Ground Loop Design LEAD PLUS GLD LEAD Residential Version 2014 Gaia Geothermal s residential ground sourc
30. ing A slide bar allows you to enter information about the gains from appliances and lighting This is a judgement call Be aware that the occupancy of a home can change over time as the owners purchase new more efficient appliances or the number of people in the home will affect the energy consumption No appliances of lighting solar Gains When you have completed entering the data required to calculate the heat loss heat gain for one zone in the home LEAD PLUS calculates three numbers LOADS amp ENERGY ANALYSIS Design heat loss of home based on weather data from Guelph ON Cooling Load Heat Loss of Home minus internal gains Heating capacity required from heating system e Design heat loss based on the data you have entered in Btu hr This is the amount of heat the home would require if it were unoccupied This is the load needed to determine the heating capacity required at design temperature e Heat loss of home minus internal gains This is the average amount of heat required by the home when the occupants and other internal gains are taken into account This allows us to model the performance of the heating cooling system with greater accuracy and to more accurately simulate the performance of the GHX e Cooling load This is the cooling capacity required for the home Energy Analysis When you have completed the heating and cooling load calculations you have the information needed to determine the capaci
31. lable in the family Note that you cannot select individual heat pumps here This list only indicates which pumps are available for auto selection by the program If you want to manually select a particular pump keep reading In this example select the Waterfurnace Premier P series Return to the Loads tab and take a look at the heat pump data panel Heat Pump Specifications at Design Temperature and Flow Rate Pump Mame W Custom Pump Select Cooling Heating Suto Select Capacity kBtusHr T Power ky FER ZOP Flow Rate gpm Details Partial Load Factor 14 LOADS AND PUMPS Prior to Selecting a Heat Pump With no pump currently selected the Custom Pump box is checked and all pump performance values are at 0 0 To have the program auto select a pump from the Waterfurnace Premier P family hit the Auto Select button This is what you will see Heat Pump Specifications at Design Temperature and Flow Rate Pump Mame Custom Pump P046 Cooling Hesting Auto Select Capacity kBtufHr 46 1 Power ky 2 sik FERCOP 16 2 Details Flow Rate gpm 8 0 Partial Load Factor Selected Pump Performance Characteristics The program has selected the PO46 pump based on the peak loads that we entered earlier in this tutorial Click on the Details button to see details about the selected PO46 pump Heat Pump Specifications at Design Temperature and Flow Rate Pump Manufacturer WakberFurnace Return Pu
32. 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 1 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 32 REPORTS AND DESIGN TIPS linked to the same loads data Now you can compare two designs at the same time 2 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 3 Compare and contrast different manufacturers and heat pumps 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 4 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 and can be found in the middle of the row of
33. mmended flow rate and the minimum flow rate recommended by the heat pump manufacturer Ideally the recommended flow rate should be on or slightly below the system pressure drop When you follow a vertical line down from the recommended flow rate you will see the estimated flow rate of the pump s you have selected the heat pump s you have selected and the GHX you have designed 36 CONFIGURING THE GHX Grundfos 26 116 Single pump z System Curve Single pump RecFlow Min Flow pri a w i o s u u a e i v 2 vi v ms a 15 Flow Rate Usgpm Multiple Heat Pumps The GHX PD module allows you to calculate the pressure drop with up to three heat pumps connected to a single pump module This is done in the same manner as calculating the pressure drop with a single heat pump but there are some additional numbers that must be entered Pump Module al 21 0 gpm Return from GHX w Return run out P Supply run out 21 0 gpm H 21 0 gpm The diagram representing the heat pumps and pump module includes a number of letters in red These represent sections of pipe in a typical multiple heat pump system Select the type and size of pipe and the length of pipe you will be installing in the system as well as the number of fittings needed Lead Plus automatically calculates the pressure drop through each section of pipe and calculates the volume of fluid required oF CONFI
34. mp Series Premier P Series Pump Type Water bo Air Nominal Flow 1200 CFM Inlet Gir Temperatures and Flow Rate Load EAT Cooling WE 67 0 F Heating DB 700 F Flow Rate Cooling 1200 CFM Heating 4200 CFM 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 tutorial the EAT values will not be modified Click the Return button to go back to the original view 15 LOADS AND PUMPS Heat Pump Specifications at Design ee and Flow Rate Pump Name Custom Pump PO46 ae Fe Cooling Heating e Capacity kKBtu Hr 46 1 A Power ky 2 05 16 2 FER COP Details Flow Rate igprn 50 10 Partial Load Factor 0 69 0 93 Flow Rate 30 3 0 gpmiton Unit Inlet iF 85 0 Selected Pump Performance Characteristics Manual selection from a list of all available pumps If an automatically selected heat pump is for any reason undesirable or a different pump series from the same manufacturer or even from a different manufacturer is required the Select button may be used This button allows the designer to choose any of the database pumps As with the Auto Selec
35. nd antifreeze is calculated as the GHX is configured GLD Features FULL POWER 3 Types of Heat Exchangers Loads Inputs Vertical e Horizontal Surface Water Zone by Zone The Residential 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 GLD also includes the zone loads module for detailed zone by zone loads The loads module 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 programs such as the LEAD Plus tool as well as from Excel files can be imported conveniently into the loads modules COMPLETE CUSTOMIZATION 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 variations 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 e Multilingual With instant direct metric English unit conversions and foreign langu
36. ngth of the various piping components must be entered The large majority of residential systems in North America are installed with rubber hose between the circulation pump module and the heat pump Heat Pump Model Rec GPM Min GPM EM048 120 90 Piping to Heat Pump HeatPump1 MADEO EEE Pipe from J to H 1 00 Rubber Hose pefrom JtoH 120 oo piumone 1 50 Rubber Hose Select the type of hose or pipe you plan to use in your project and enter the length You must also enter the number of fittings used to connect the pump module to the heat pump as this increases the pressure drop When a single heat pump is used in a home there are only a few more selections to make and a few more dimensions to enter These are e The length and type of pipe used as the supply runout from the pump module to the first tee in the GHX If any fittings elbows are used in the supply runout enter the number of fittings used e The length and type of pipe running from the last tee in the return runout to the pump module as well as the number of fittings In GLD you determined the total amount of pipe required in the GHX to operate the system you are designing This number should be entered next VOTE remember to enter the total amount of PIPE required not the total length of borehole or length of trench 35 CONFIGURING THE GHX Supply Run out 9 1 25 HDPE SDR13 5 7 i hac W GHX Configuration Total GHX pipe from GLD
37. ooling Loads amp Energy Analysis Economics CO GLD Link GHX PI and cooling loads and energy analysis The peak heating and cooling loads determine the capacity of the equipment needed for the home while the annual energy loads determine the amount of energy that must be taken from or rejected to the GHX The calculations for the heat loss and heat gain of a home require the entry some information about the climate the home is located in the temperature the home is to be maintained at and the dimensions of the home 4 T he foundation of a geothermal system design is accurate heating The current version of LEAD PLUS allows you to divide the home into as many as ten zones The quickest way to calculate a heat loss heat gain for a complete home is to treat the whole house as a single zone In larger homes it is often advantageous to split the home into a number of zones especially if you and or your client prefers to have the capability of controlling the temperature of different areas of the home separately Climate Data The heat loss heat gain of a home is directly related to the temperature difference between the inside of the home and the outside The first step when you are designing a system is to determine what the design temperature is where the home is being built and to determine the temperature that is to be maintained in the home the temperature difference between indoors and the outdoors LOADS amp E
38. rting a file for future use LEADPius i Compatibility Mode Application a Home Insert Pagelayout Formulas Data Review View Aadi AUS Export Da ia l Import Data End User License Agreement About fz AAA Geo Design E F G H L M N 0 2 Residential Heat Loss amp Cooling Load Analysis Caia fy LE Geothermal 44
39. sil fuel system and determine the simple payback for the system It also allows the designer to enter financial data needed to determine the cash flow payback for a specific system based on fuel inflation rates and mortgage rates for up to a 30 year term CO2 provides the designer with the CO2 emissions from a specific system and compares it with the CO2 emissions from various fossil fuel systems that have been selected Energy Cost LEAD Plus allows you to estimate the cost of heating cooling and producing hot water for a home with a GeoExchange system versus a system using electric heat natural gas propane or oil Simply select the units the various fuels are sold in your area enter the cost of the fuel and enter the efficiency of the appliance you would like to compare Energy Cost Comparison for Heating Cost of electricity kWh 0 065 Cost of Gas CCF tS 1 200 Cost of Propane US Gallon v 3 300 Cost of Oil US Gallon e s 4 000 y uN VY 0 065 0 044 0 141 0 115 LEAD Plus presents the information for your client in a chart as well as graphically in an easy to read graph 39 CONFIGURING THE GHX Natural Gas Propane oW teac Geothermal Heating Cost 1 601 5 056 Total Annual Energy Ja Cooling Cost 115 115 Cost Comparison Water Heating Cost 399 942 Total Energy Cost S2114 Annual Energy Cost Comparison Natural Gas Propane Oil i Geothermal OHesting Co
40. st 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 all 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 You will have the option of printing a Concise Form Choose to print the concise form and take a look at it Sharing Project Files With Colleagues GLD saves zone files from the Loads modules and project files from the heat exchanger files separately Colleag
41. st OCooling Cost Economics Most people considering a geothermal system want to justify their choice economically LEAD Plus allows you to show your clients both a simple payback and a cash flow payback for the system you are designing When you have determined the capacity and type of equipment needed and have determined the type and size of GHX you may be able to estimate the cost of installing a system You will also need to estimate the cost of installing the alternate system to which you are comparing the geothermal system If you have entered the information needed in the Energy Cost module you now have all the information needed to present your client with the information he or she needs to make a decision to purchase a geothermal system Select system to compare GEO system to Natural Gas 7 Energy cost of Natural Gas system X Energy cost of GEO system 2 Estimated fuel inflation rate Estimated electricity inflation rate 3 0 Economic Comparison Cost of installing Natural Gas system Cost of installing GEO system of Geothermal System Value of incentives to install GEO system and SELI E N Gas Actual cost of installing GEO system 16 000 Interest rate to purchase Natural Gas system Interest rate to purchase GEO system o system Term of loan in years EE a Term of loan in years o a oI Number of payments per year I Number of payments per year Monthly payment Monthly payment 103 40 CONFIGU
42. t button all of the associated fields are calculated automatically once the pump is selected When the Select button is pressed a selection panel appears After a pump is chosen pressing Select Pump will place the pump in the zone and automatically calculate all of the associated parameters Cancel will return the user to the main display without changing any pumps Note Unlike with Auto Select a pump that is manually selected may or may not match the loads in the zone It is the responsibility of the designer to make sure the pumps match the loads and zones Custom input of pump data 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 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 16 STEP 2 5 LOADS AND PUMPS 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
43. ty of the heating cooling system With the appropriate climate data it is possible to determine the energy consumption required by the home annually The climate data base built into LEAD PLUS includes bin data for over 330 locations Bin data provides the number of hours that the temperature at a specific location is within specific temperature ranges LEAD PLUS uses this data to calculate the amount of energy a home will require over a year to maintain the temperature setpoint This in turn allows LEAD PLUS to calculate how much energy must be extracted from or rejected into the GHX annually This is the information needed by GLD to calculate the size of the GHX required to operate the system Exporting Loads from LEAD PLUS to GLD To determine the length of the GHX for the residential system you are designing GLD requires the heating and cooling loads you have calculated in LEAD PLUS as well as the amount of time that the heat pump you have selected in the Energy Analysis module will run annually 10 LOADS amp ENERGY ANALYSIS This is accomplished by going to the GLD Link module The loads and runtimes are calculated based on your calculations in the previous modules and are found in the bright yellow highlighted cells in GLD Link e Hold down the LEFT mouse button while you move the mouse over the four highlighted cells e Release the LEFT mouse button the press the CTRL key and the C key on your computer at
44. ues 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 31 REPORTS AND DESIGN TIPS 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 minimize the risk of communication problems while working in multiple
45. umps 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 miy ft This button can be found near the top of the program at the far right end of the row of icons Pump Power Calculator Click on the Pump Power Calculator button to open the calculator It looks like this 22 HEAT EXCHANGER DESIGN f Pump Power Calculator Purnp Power Required Pump Power hP Pump Head 60 0 ft hd Flow Rate 100 0 gpm Pump Efficiency 80 0 Mo 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 lhp e Pump Motor Efficiency 85 Now click on the Pattern tab This is what you will see T Borehole Design Project 1 Results Fluicl Soil U Tube Pattern Extra ki Information Fined Length Mode l OnO grenole Lengtl 1 ertical Grid Arrangement Borehole Number Rows Across Rows Down Borehole Separation Pattern Panel 23 STEP 4 5 HEAT EXCHANGER DESIGN Information pertaining to the ground field arrangement is in the Pattern panel This includes the fixed borehole length design option the vertical boreholes p
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