Hi Derek,<br><br>This is one of the shortcomings of eQuest.  You can't couple the loop-to-loop heat pump to a ground loop heat exchanger.  I've actually had issues using the loop-to-loop heat pump just with standard loop types.<br>
<br>Usually what I do for these systems is model air-to-air heat pumps, but adjust the EIR, HIR and fan power to make up the difference.  Not perfect, but pretty close.<br><br>Hope this helps,<br><br>--<br>Karen<br><br><div class="gmail_quote">
On Thu, Nov 13, 2008 at 7:51 PM, Derek Hengeveld <span dir="ltr"><<a href="mailto:hengeveld@btu-engineering.com">hengeveld@btu-engineering.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
















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<p><font size="2" face="Arial"><span style="font-size: 10pt; font-family: Arial;">I am trying to model a central geothermal heat pump in
eQUEST which can provide simultaneous heating/cooling. The heat pump generates
conditioned water for both hot and chilled water loops which serve induction
units throughout the building. It seems that I can only couple the central heat
pump to a ground water source and not the ground heat exchanger option. Has
anyone been able to do model a central geothermal heat pump? If so, how? Thanks.
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<p><font size="2" face="Times New Roman"><span style="font-size: 10pt;">Derek
Hengeveld, P.E.<br>
BTU Engineering, Inc.<br>
3727 Western Ave. S.<br>
Brookings, SD 57006<br>
Phone: 605.690.1612<br>
FAX: 866.461.8182<br>
</span></font><a href="mailto:hengeveld@BTU-Engineering.com" target="_blank"><font size="2"><span style="font-size: 10pt;">hengeveld@BTU-Engineering.com</span></font></a><br>
<a href="http://www.BTU-Engineering.com" target="_blank"><font size="2"><span style="font-size: 10pt;">www.BTU-Engineering.com</span></font></a></p>

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