<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>Vikram:</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><span>FYI; Jeff Hirsh responded to a question that I posed and stated that eQuest does not support an OA-from systems with an ERV. While I find it possible to add one, the airflow and recovery through the ERV do not make sense.</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px;
font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><span>Have you found a work-around?<br></span></div><div> </div><div>Paul Diglio</div><div><br><br></div><div>87 Fairmont Avenue<br>New Haven, CT 06513<br>203-415-0082</div><br> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight:bold;">From:</span></b> "Sami, Vikram" <vikram.sami@zgf.com><br> <b><span style="font-weight: bold;">To:</span></b> "Sami, Vikram" <vikram.sami@zgf.com>; James Mathias <mathias@engr.siu.edu>; "equest-users@lists.onebuilding.org" <equest-users@lists.onebuilding.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, September 18, 2013 3:03 PM<br> <b><span style="font-weight:
bold;">Subject:</span></b> Re: [Equest-users] One question about eQUEST<br> </font> </div> <div class="y_msg_container"><br><div id="yiv773304835">
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<div class="yiv773304835MsoNormal"><span style="color:#1F497D;">Ok here goes – copying the group in case anyone else has better feedback</span></div>
<div class="yiv773304835MsoNormal"><span style="color:#1F497D;"> </span></div>
<div class="yiv773304835MsoNormal"><span style="color:#1F497D;">At first glance here’s a couple of impression. I don’t do too many single family homes, so my mental validation might be off.
</span></div>
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<div class="yiv773304835MsoListParagraph" style=""><span style="font-family:Symbol;color:#1F497D;"><span style="">·<span style="font:7.0pt;">
</span></span></span><span style="color:#1F497D;">The fan load is high compared to everything else. Partly because everything else is really low. Your annual EUI is 13.2 KBTU/ft2-yr – that’s very low – even for
a house. This makes sense with a GSHP. </span></div>
<div class="yiv773304835MsoListParagraph" style=""><span style="font-family:Symbol;color:#1F497D;"><span style="">·<span style="font:7.0pt;">
</span></span></span><span style="color:#1F497D;">1” static pressure on your fans might be high for a residential terminal unit that’s not ducted.
</span></div>
<div class="yiv773304835MsoListParagraph" style=""><span style="font-family:Symbol;color:#1F497D;"><span style="">·<span style="font:7.0pt;">
</span></span></span><span style="color:#1F497D;">PVVT might not be the best system choice to go with a ground loop – try a water loop heat pump. You will still have fan energy, but with a terminal unit (as opposed
to a ducted one) you should see that go down. </span></div>
<div class="yiv773304835MsoListParagraph" style=""><span style="font-family:Symbol;color:#1F497D;"><span style="">·<span style="font:7.0pt;">
</span></span></span><span style="color:#1F497D;">The heat recovery system for the ventilator is a more complex matter that will require you to go well beyond the SD wizard. You will need to model a DOAS with
energy recovery. </span></div>
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<div class="yiv773304835MsoNormal" style="line-height:12.0pt;"><b><span style="font-size:9.0pt;color:#E33B45;">Vikram Sami</span></b><span style="font-size:12.0pt;color:#1F497D;"><br>
</span><span style="font-size:9.0pt;color:#666666;">Associate Partner</span><span style="font-size:12.0pt;color:#1F497D;"></span></div>
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<div class="yiv773304835MsoNormal" style="line-height:12.0pt;"><span style="font-size:9.0pt;color:#666666;">ZGF ARCHITECTS LLP</span><span style="font-size:12.0pt;color:#1F497D;"><br>
</span><b><span style="font-size:7.5pt;color:#E33B45;">T
</span></b><span style="font-size:9.0pt;color:#666666;">206.521.3509
</span><b><span style="font-size:7.5pt;color:#E33B45;">E
</span></b><span style="font-size:9.0pt;color:#666666;">vikram.sami@zgf.com</span><span style="font-size:12.0pt;color:#1F497D;"><br>
</span><span style="font-size:9.0pt;color:#666666;">925 Fourth Avenue, Suite 2400
<br>
Seattle, WA 98104</span><span style="font-size:12.0pt;color:#1F497D;"></span></div>
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<div class="yiv773304835MsoNormal"><b><span style="font-size:10.0pt;">From:</span></b><span style="font-size:10.0pt;"> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Sami, Vikram<br>
<b>Sent:</b> Tuesday, September 17, 2013 3:17 PM<br>
<b>To:</b> James Mathias; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] One question about eQUEST</span></div>
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<div class="yiv773304835MsoNormal"><span style="color:#1F497D;">James,</span></div>
<div class="yiv773304835MsoNormal"><span style="color:#1F497D;"> </span></div>
<div class="yiv773304835MsoNormal"><span style="color:#1F497D;">What is your system selection? Also – could you attach your inp file?
</span></div>
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<div class="yiv773304835MsoNormal" style="line-height:12.0pt;"><b><span style="font-size:9.0pt;color:#E33B45;">Vikram Sami</span></b><span style="font-size:12.0pt;color:#1F497D;"><br>
</span><span style="font-size:9.0pt;color:#666666;">Associate Partner</span><span style="font-size:12.0pt;color:#1F497D;"></span></div>
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<div class="yiv773304835MsoNormal" style="line-height:12.0pt;"><span style="font-size:9.0pt;color:#666666;">ZGF ARCHITECTS LLP</span><span style="font-size:12.0pt;color:#1F497D;"><br>
</span><b><span style="font-size:7.5pt;color:#E33B45;">T
</span></b><span style="font-size:9.0pt;color:#666666;">206.521.3509
</span><b><span style="font-size:7.5pt;color:#E33B45;">E
</span></b><span style="font-size:9.0pt;color:#666666;"><a rel="nofollow" ymailto="mailto:vikram.sami@zgf.com" target="_blank" href="mailto:vikram.sami@zgf.com">vikram.sami@zgf.com</a></span><span style="font-size:12.0pt;color:#1F497D;"><br>
</span><span style="font-size:9.0pt;color:#666666;">925 Fourth Avenue, Suite 2400
<br>
Seattle, WA 98104</span><span style="font-size:12.0pt;color:#1F497D;"></span></div>
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<div class="yiv773304835MsoNormal"><b><span style="font-size:10.0pt;">From:</span></b><span style="font-size:10.0pt;">
<a rel="nofollow" ymailto="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank" href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a> [<a rel="nofollow" ymailto="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank" href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>James Mathias<br>
<b>Sent:</b> Monday, September 16, 2013 3:04 PM<br>
<b>To:</b> <a rel="nofollow" ymailto="mailto:equest-users@lists.onebuilding.org" target="_blank" href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] One question about eQUEST</span></div>
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<div class="yiv773304835MsoNormal"> </div>
<div class="yiv773304835MsoNormal"><span style="font-size:12.0pt;">Hello,</span></div>
<div class="yiv773304835MsoNormal"><span style="font-size:12.0pt;"> </span></div>
<div class="yiv773304835MsoNormal"><span style="font-size:12.0pt;">I have one, I think fairly simple questions about eQUEST.</span></div>
<div class="yiv773304835MsoNormal"><span style="font-size:12.0pt;"> </span></div>
<div class="yiv773304835MsoNormal"><span style="font-size:12.0pt;">1. My simulation shows quite a bit of energy used by ventilation fans but it is for a simulation of a house that does not have ventilation fans. Where can I tell eQUEST
there are no ventilation fans? I do actually have an heat recovery ventilation system but it runs for about only 2 hours each day. Does eQUEST have the ability to simulate that also?</span></div>
<div class="yiv773304835MsoNormal"><span style="font-size:12.0pt;"> </span></div>
<div class="yiv773304835MsoNormal"><span style="font-size:12.0pt;">James Mathias, Ph.D., P.E.</span></div>
<div class="yiv773304835MsoNormal"><span style="font-size:12.0pt;">Associate Professor</span></div>
<div class="yiv773304835MsoNormal"><span style="font-size:12.0pt;">Mechanical Engineering and Energy Processes</span></div>
<div class="yiv773304835MsoNormal"><span style="font-size:12.0pt;">Mailcode 6603</span></div>
<div class="yiv773304835MsoNormal"><span style="font-size:12.0pt;">ENGR E-024, 1230 Lincoln Drive</span></div>
<div class="yiv773304835MsoNormal"><span style="font-size:12.0pt;">Carbondale, IL 62901</span></div>
<div class="yiv773304835MsoNormal"><span style="font-size:12.0pt;">618-453-7016, -7658 fax</span></div>
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