<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1536959737391_12018"><span>Hi Nick:</span></div><div id="yui_3_16_0_ym19_1_1536959737391_12165"><span><br></span></div><div id="yui_3_16_0_ym19_1_1536959737391_12164"><span id="yui_3_16_0_ym19_1_1536959737391_12163">Thanks for the idea. I can calculate in Excel and tweak a fan schedule in eQuest to match the energy consumption of the fan.<br></span></div><div id="yui_3_16_0_ym19_1_1536959737391_12183"><span><br></span></div><div id="yui_3_16_0_ym19_1_1536959737391_12104"><span id="yui_3_16_0_ym19_1_1536959737391_12103">This crawlspace is 20' from the ocean and the designer assumes there will be excessive humidity buildup. <br></span></div><div id="yui_3_16_0_ym19_1_1536959737391_12178"><span id="yui_3_16_0_ym19_1_1536959737391_12103"><br></span></div><div id="yui_3_16_0_ym19_1_1536959737391_12184"><span id="yui_3_16_0_ym19_1_1536959737391_12103">Regards,</span></div><div id="yui_3_16_0_ym19_1_1536959737391_12102"> </div><div class="signature" id="yui_3_16_0_ym19_1_1536959737391_12019">Paul Diglio<br>87 Fairmont Avenue <br>New Haven, CT 06513 <br><br><br></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1536959737391_12020"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1536959737391_12134" style="display: block;"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1536959737391_12133"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1536959737391_12132"> <div dir="ltr" id="yui_3_16_0_ym19_1_1536959737391_12131"> <font id="yui_3_16_0_ym19_1_1536959737391_12135" size="2" face="Arial"> <hr id="yui_3_16_0_ym19_1_1536959737391_12151" size="1"> <b><span style="font-weight:bold;">From:</span></b> Nicholas Caton <Nicholas.Caton@schneider-electric.com><br> <b><span style="font-weight: bold;">To:</span></b> Paul Diglio <paul.diglio@sbcglobal.net>; "equest-users@onebuilding.org" <equest-users@onebuilding.org> <br> <b id="yui_3_16_0_ym19_1_1536959737391_12195"><span style="font-weight: bold;" id="yui_3_16_0_ym19_1_1536959737391_12194">Sent:</span></b> Friday, September 14, 2018 12:56 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> RE: [Equest-users] Exhaust Fan for Humidity Control<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1536959737391_12136"><br><div id="yiv3524171782"><style>#yiv3524171782 #yiv3524171782 --
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<div class="yiv3524171782MsoNormal" id="yui_3_16_0_ym19_1_1536959737391_12137">Hi Paul,</div>
<div class="yiv3524171782MsoNormal" id="yui_3_16_0_ym19_1_1536959737391_12140"> </div>
<div class="yiv3524171782MsoNormal" id="yui_3_16_0_ym19_1_1536959737391_12142">To my knowledge, there’s no explicit option in equest for tying a fan/process energy to an interior/exterior humidity state. Some pre-processing/work outside your model would be necessary.
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<div class="yiv3524171782MsoNormal" id="yui_3_16_0_ym19_1_1536959737391_12144">You could do an analysis separately in excel (ideally informed with field measurements of an existing/built situation) with intent to ultimately estimate fan runtime, and then “spoon feed” the outcome of your efforts into an eQuest model
in the form of a fan schedule and some power inputs at the meter. The likes of EMIT can make the transition from spreadsheet efforts easier.</div>
<div class="yiv3524171782MsoNormal" id="yui_3_16_0_ym19_1_1536959737391_12145"> </div>
<div class="yiv3524171782MsoNormal" id="yui_3_16_0_ym19_1_1536959737391_12146">I might however first want to take a step back and draw caution towards understanding more of the context behind this measure… I’m reminded that Mr. Lstiburek’s articles in the ASHRAE journals and beyond (hosted here:
<a rel="nofollow" shape="rect" target="_blank" href="https://buildingscience.com/document-search" id="yui_3_16_0_ym19_1_1536959737391_12147">https://buildingscience.com/document-search</a> <-- you can filter results by ticking the box for “Crawlspaces”) repeatedly warn against passively/actively ventilating building crawlspaces to/from the exterior.
It’s my general sense that active ventilation with exterior conditions can generally cause more problems than it solves with regard to humidity/moisture issues. If however we’re talking about circulation of conditioned (interior) air and treating the crawlspace
like a conditioned/sealed basement, that’s approaching an “ideal” state WRT moisture control.</div>
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<div class="yiv3524171782MsoNormal" id="yui_3_16_0_ym19_1_1536959737391_13846">I hope this is a little helpful!</div>
<div class="yiv3524171782MsoNormal" id="yui_3_16_0_ym19_1_1536959737391_13847"> </div>
<div class="yiv3524171782MsoNormal" id="yui_3_16_0_ym19_1_1536959737391_13848">~Nick</div>
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<div class="yiv3524171782MsoNormal"><span style=""><img id="yiv3524171782Picture_x0020_1" style="width:7.5625in;min-height:.0937in;" src="cid:image001.png@01D44C19.6DAEC290" data-id="803ce7ab-75b3-a355-d8b7-e6807cc023d6" width="726" height="9" border="0"></span></div>
<div class="yiv3524171782MsoNormal"><b><span style="">Nick Caton, P.E., BEMP</span></b><span style="color:#3A7A46;"></span></div>
<table class="yiv3524171782MsoNormalTable yahoo-compose-table-card" style="width:543.0pt;border-collapse:collapse;" width="724" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td colspan="1" rowspan="1" style="width:172.3pt;padding:0in 0in 0in 0in;" width="230" valign="top">
<div class="yiv3524171782MsoNormal"><span style="font-size:8.0pt;"> Senior Energy Engineer</span><span style="font-size:8.0pt;"><br clear="none">
</span><span style="font-size:8.0pt;"> Regional Energy Engineering Manager</span></div>
<div class="yiv3524171782MsoNormal"><span style="font-size:8.0pt;"> Energy and Sustainability Services</span><span style="font-size:8.0pt;"><br clear="none">
</span><span style="font-size:8.0pt;"> Schneider Electric</span><span style="color:#1F497D;"></span></div>
</td><td colspan="1" rowspan="1" style="width:218.3pt;padding:0in 0in 0in 0in;" width="291" valign="top">
<div class="yiv3524171782MsoNormal"><span style="font-size:8.0pt;">D </span><span style="font-size:8.0pt;">913.564.6361
</span><span style="font-size:8.0pt;"><br clear="none">
</span><span style="font-size:8.0pt;">M </span><span style="font-size:8.0pt;">785.410.3317
</span><span style="font-size:8.0pt;"><br clear="none">
</span><span style="font-size:8.0pt;">F </span><span style="font-size:8.0pt;">913.564.6380</span><span style="font-size:8.0pt;"><br clear="none">
</span><span style="font-size:8.0pt;">E </span><span style="color:#1F497D;"><a rel="nofollow" shape="rect" ymailto="mailto:nicholas.caton@schneider-electric.com" target="_blank" href="mailto:nicholas.caton@schneider-electric.com"><span style="font-size:8.0pt;">nicholas.caton@schneider-electric.com</span></a></span></div>
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<div class="yiv3524171782MsoNormal" style="text-align:right;" align="right"><span style="font-size:8.0pt;">15200 Santa Fe Trail Drive<br clear="none">
Suite 204<br clear="none">
Lenexa, KS 66219<br clear="none">
United States</span><span style="color:#1F497D;"></span></div>
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<div class="yiv3524171782MsoNormal"><b>From:</b> Equest-users <equest-users-bounces@lists.onebuilding.org>
<b>On Behalf Of </b>Paul Diglio via Equest-users<br clear="none">
<b>Sent:</b> Tuesday, September 11, 2018 8:07 AM<br clear="none">
<b>To:</b> equest-users@onebuilding.org<br clear="none">
<b>Subject:</b> [Equest-users] Exhaust Fan for Humidity Control</div>
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<div class="yiv3524171782MsoNormal" style="background:white;"><span style="font-size:12.0pt;">Hi All:</span></div>
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<div class="yiv3524171782MsoNormal" style="background:white;"><span style="font-size:12.0pt;">Is there anyway to model an exhaust fan that only runs when the humidity in a crawl space is above a certain setpoint?</span></div>
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<div class="yiv3524171782MsoNormal" style="background:white;"><span style="font-size:12.0pt;">Thank you,</span></div>
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<div class="yiv3524171782MsoNormal" style="background:white;"><span style="font-size:12.0pt;"> </span></div>
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<div class="yiv3524171782MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-size:12.0pt;">Paul Diglio<br clear="none">
87 Fairmont Avenue <br clear="none">
New Haven, CT 06513 <br clear="none">
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