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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Aaron,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Recently I’ve introduced myself to a great free program that I
plan to use alongside my next eQuest project involving a GLHX. The
program, referenced in the eQuest help files, is GS2000 and is produced and
distributed by some arm of the Canadian government. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>This program lets you, after learning about the parameters of
borefield design, model the thermal (not energy) behavior of an actual GLHX.
There is a good degree of better control over all of the variables than the
eQuest wizards offer. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>When all is said and done, you get results that evaluate your
design over a 10-year period, observing the effects of adding a heat rejection
equipment if you choose to, and it also spits out the monthly average loop
temperatures. The heat rejection equipment has some limited flexibility
in defining its schedule (seems like you just get to say which months of the
year it runs, presumeably continuously). As a side benefit, you get a
real feel of how large such a fluid cooler needs to really be, and what the
economic implications are vs. just doing a larger well field.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I’d suggest as an option to try this, then making a well loop in
eQuest assigning a custom temperature schedule using the monthly averages output
of GS2000. If you give some attention to ensuring your heatpump curves
and your cooling tower operating schedule is well defined in relation to those
temperatures, I think you’ll be set to model the actual system performance
pretty accurately.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I’ll point out that while I’ve dealt with the ins and outs of modeling
GLHX systems in eQuest (you’ll find at least a few posts searching for my name),
I can’t say with certainty that there is no method of modeling cooling tower
effects on a GLHX loop entirely within eQuest as I haven’t tried it yet… <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Are you getting an error when trying to attach the tower to the
loop? Is the attachment “working” but you’re not seeing any effects on the
loop temperatures? Let us as a community know what you’ve tried and what’s
not working more specifically, and you’ll be sure to get more timely/specific
advice ;).<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><img width=119 height=37 id="Picture_x0020_1"
src="cid:image001.jpg@01CA476D.37C7AA80" alt="cid:489575314@22072009-0ABB"></span><b><span
style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Calibri","sans-serif";
color:#CC9900'>PROJECT ENGINEER</span><span style='font-size:7.5pt;font-family:
"Times New Roman","serif";color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>25501 west valley parkway<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>direct 913 344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>fax 913 345.0617<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>Check out our new web-site @ </span></i><span style='font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><a
href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span
style='font-size:10.0pt'>www.smithboucher.com</span></a></span><u><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:blue'> </span></u><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>aaronleelyt<br>
<b>Sent:</b> Tuesday, October 06, 2009 10:51 PM<br>
<b>To:</b> equest-users<br>
<b>Subject:</b> [Equest-users] Hybrid GSHP<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal style='line-height:20.95pt'><span style='font-size:11.5pt'>Dear
All,</span><o:p></o:p></p>
<p class=MsoNormal style='line-height:20.95pt'><span style='font-size:11.5pt'>At
present I am working on a project using Hybrid GSHP.</span><span
style='font-size:11.5pt;font-family:"Times New Roman","serif"'> </span><span
style='font-size:11.5pt'>A cooling tower is attached to the ground heat
exchanger loop to balance the uneven heating and cooling load. Does anyone meet
this problem before? Any suggestions? Thanks a lot!</span><o:p></o:p></p>
<p class=MsoNormal style='line-height:20.95pt'><span style='font-size:11.5pt;
font-family:"Times New Roman","serif"'> </span><o:p></o:p></p>
<p class=MsoNormal style='line-height:20.95pt'><span style='font-size:11.5pt'>Aaron</span><span
style='font-size:11.5pt;font-family:"Times New Roman","serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p>
<div class=MsoNormal align=center style='text-align:center'>
<hr size=2 width="100%" align=center>
</div>
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