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<p class=MsoNormal><span style='color:#1F497D'>Rick,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>We typically model this sort of
scenario outside of eQUEST as it won’t do it for you. We use hourly report
values for loads/CFMs to determine the load balance and thus the operation of
the heat pump chiller. The challenge is getting a heat pump manufacturer to
share performance curves with you. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Paul<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt;color:#660000;text-transform:uppercase'>Paul Erickson</span></b><b><span
style='font-size:9.0pt;color:#333333'> </span></b><span
style='font-size:9.0pt;color:#333333'>LEED® AP <br>
</span><span style='font-size:10.0pt;color:#1F497D;text-transform:uppercase'>Sustainable
Practice Leader</span><span style='font-size:9.0pt;color:#333333'><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:9.0pt;color:#333333'> <o:p></o:p></span></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:9.0pt;color:#660000'>AEI</span></b><span style='font-size:
9.0pt;color:#333333'> | AFFILIATED ENGINEERS, INC. <br>
5802 Research Park Blvd. | Madison, WI 53719<br>
<br>
</span><span style='font-size:9.0pt;color:#660000'>P: 608.236.1112 | F:
608.238.2614</span><span style='font-size:9.0pt;color:#333333'> <br>
</span><span style='font-size:9.0pt;color:#660000'><a
href="mailto:perickson@aeieng.com"><span style='color:#660000;text-decoration:
none'>perickson@aeieng.com</span></a> | </span><b><span
style='font-size:9.0pt;color:#660000'><a href="http://www.aeieng.com"><span
style='color:#660000;text-decoration:none'>www.aeieng.com</span></a></span></b><span
style='font-size:9.0pt;color:#333333'> <o:p></o:p></span></p>
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<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><span style='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>Routh
Consulting Engineers<br>
<b>Sent:</b> Monday, April 26, 2010 12:06 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Exhaust Air Heat Recovery<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Does anyone have a suggestion on how to model a heat pump
chiller with chilled water coils in zone exhaust airstreams that rejects its
heat to a water loop to preheat incoming outside air to an air handling unit.
The idea is to cool the exhaust airstreams from room temperature to say 50F,
kind of normal chilled water cooling ranges for the exhaust side. The chiller
needs to be able to make say 140F hot water for preheating use. My air handling
systems are 100% outside air, it’s an older laboratory building. The heat
recovery chiller isn’t appropriate because I don’t have internal loads
requiring mechanical cooling in the winter, the 100% outside air pretty much
takes care of those. Any experience or suggestion anyone might have would be
appreciated.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Regards,<o:p></o:p></p>
<p class=MsoNormal>Rick Routh<o:p></o:p></p>
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