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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Todd,<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'>The only real constraints on your ground loop temperature are
those imposed by the HP mfgr. For example, a Climate Master unit with the
extended range option can operate with source EWTs in the 20F-120F range.
Once you’ve decided what you want to design your source side temperatures
around, you then have to iterate your other loop field design parameters until
you find a configuration that doesn’t exceed your loop temperature
limits. Hope that helps.<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>
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<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Anthony Hardman<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:black'>Mechanical Engineer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";
color:#9BBB59'>Geo-Energy Services<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<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>Todd
Lagus<br>
<b>Sent:</b> Tuesday, June 17, 2008 11:01 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] eQuest GSHP inputs<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hello
All,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I
can’t seem to get my space to cool using my GSHP even when I specify
sufficient cooling in terms of capacity and flow. This is my first shot
at this type of system, so there are a lot of things that could possibly be
incorrect. I imported coefficients from a ClimateMaster GSHP for
operating curves, but that still may be an issue. What should the
temperature inputs be for the ground source heat exchanger loops, specifically
the HW, CHW design temperatures, and the minimum/maximum reset and alarm
temperatures. I’m trying to model a GSHP system with 45 degree
ground source water in heating and 55 degree ground source water in
cooling. I always end up with a warning about going above the maximum
alarm temperature, and the loop shuts down.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thanks
in advance.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><strong><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Todd
Lagus, EIT</span></strong><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Mechanical
Engineer</span><o:p></o:p></p>
<p class=MsoNormal><em><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sebesta
Blomberg</span></em><o:p></o:p></p>
<p class=MsoNormal><em><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>2381
Rosegate</span></em><o:p></o:p></p>
<p class=MsoNormal><em><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Roseville,
MN 55113</span></em><o:p></o:p></p>
<p class=MsoNormal><em><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Phone:
651-634-7236</span></em><o:p></o:p></p>
<p class=MsoNormal><em><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Fax:
651-634-7400</span></em><o:p></o:p></p>
<p class=MsoNormal><em><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><a
href="http://www.sebesta.com"><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>www.sebesta.com</span></a></span></em><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><em><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>This
message has been sent via the Internet. Internet communications are not secure
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guarantee that this message has not been modified in transit. This message and
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