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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Hello Julien,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">The entire formula is applied to each air stream, on the system, with an energy recovery device other than Runaround Coil.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">When calculating A for each device, the flow CFM<sub>D</sub>, is the flow through the device, not the total system flow. For example, the flow through an enthalpy
wheel might be the only the outdoor air portion of the total system flow.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">It’s a good question though. I can see how the wording might trip you up.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><img width="108" height="43" id="Picture_x0020_2" src="cid:image001.png@01D0DFE4.3974D540" alt="cid:image003.png@01D09C46.E75BA0D0"></span><b><span style="color:#1C467A"><o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1C467A">Christopher Jones,</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">
</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">P.Eng.<i>
<br>
</i></span><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Senior Engineer<b><o:p></o:p></b></span></p>
<p class="MsoNormal"><b><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">WSP Canada Inc.<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">2300 Yonge Street, Suite 2300<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Toronto, ON M4P 1E4</span><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#595959"><br>
</span><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">T +1 416-644-4226<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">F +1 416-487-9766<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">C +1 416-697-0065<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><a href="http://www.wspgroup.com/"><span style="color:blue">www.wspgroup.com</span></a>
</span><i><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#565656"><o:p></o:p></span></i></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","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""> Bldg-sim [mailto:bldg-sim-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Julien.Dutel@mern.gouv.qc.ca<br>
<b>Sent:</b> Wednesday, August 26, 2015 9:32 AM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] 90.1 2010 - ERV - Fan Power Limitation Pressure Drop Adjustment<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif"">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif"">With 90.1 2010, I wonder how to apply the fan power limitation pressure drop adjustment formula for an ERV:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif"">(2.2 </span>
<span lang="EN-CA" style="font-size:10.0pt">• </span><span lang="EN-CA" style="font-family:"Droid Serif""> Energy Recovery Effectiveness) - 0.5 in w.c. for each airstream<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif"">I don’t find example in the 90.1 user’s manual about ERV, does the “for each stream” statement apply to the “0.5 in w.c.” or to the all formula ?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif"">With a 10,000 cfm ventilation fan and a sensible wheel with a 60% efficiency, what would be the pressure drop adjustment for the ERV?<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in"><span lang="EN-CA" style="font-family:Symbol">·</span><span lang="EN-CA" style="font-size:7.0pt;font-family:"Times New Roman","serif"">
</span><span lang="EN-CA" style="font-family:"Droid Serif"">10,000 • ( (2.2 • 0.6 ) - 0.5 • 2) = 3,200 hp<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif""><o:p> </o:p></span></p>
<p class="MsoListParagraph"><span lang="EN-CA" style="font-family:"Droid Serif"">Or
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif""><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in"><span lang="EN-CA" style="font-family:Symbol">·</span><span lang="EN-CA" style="font-size:7.0pt;font-family:"Times New Roman","serif"">
</span><span lang="EN-CA" style="font-family:"Droid Serif"">10,000 • 2 • ( (2.2 • 0.6 ) - 0.5)=16,400 hp<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif"">It’s definitively not the same !<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif"">Thanks <o:p>
</o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif"">Julien<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:"Droid Serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="FR-CA" style="font-family:"Droid Serif";color:green;mso-fareast-language:FR-CA">Julien Dutel,</span></b><span lang="FR-CA" style="font-family:"Droid Serif";color:green;mso-fareast-language:FR-CA"> ing., CEM, CMVP<b>.<o:p></o:p></b></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="font-size:10.0pt;font-family:"Droid Serif";color:black;mso-fareast-language:FR-CA">Direction des secteurs résidentiel, institutionnel et des affaires</span><span lang="FR-CA" style="mso-fareast-language:FR-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="font-size:10.0pt;font-family:"Droid Serif";color:black;mso-fareast-language:FR-CA">Bureau de l'efficacité et de l'innovation énergétiques<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="font-size:10.0pt;font-family:"Droid Serif";color:black;mso-fareast-language:FR-CA">Ministère des Ressources naturelles</span><span lang="FR-CA" style="font-size:12.0pt;font-family:"Droid Serif";color:black;mso-fareast-language:FR-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="font-size:10.0pt;font-family:"Droid Serif";color:black;mso-fareast-language:FR-CA">5700, 4e Avenue Ouest, B-406<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="font-size:10.0pt;font-family:"Droid Serif";color:black;mso-fareast-language:FR-CA">Québec (Québec) G1H 6R1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="font-size:10.0pt;font-family:"Droid Serif";color:black;mso-fareast-language:FR-CA">Téléphone : 418 627-6379, poste 8060<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="font-size:10.0pt;font-family:"Droid Serif";color:black;mso-fareast-language:FR-CA">Téléphone sans frais : 1 877 727-6655<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="font-size:10.0pt;font-family:"Droid Serif";color:black;mso-fareast-language:FR-CA">Télécopieur : 418 643-5828</span><span lang="FR-CA" style="font-size:12.0pt;font-family:"Droid Serif";color:black;mso-fareast-language:FR-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="mso-fareast-language:FR-CA"> </span><span lang="FR-CA" style="font-size:9.0pt;font-family:"Droid Serif";color:black;mso-fareast-language:FR-CA"><a href="http://www.efficaciteenergetique.mrn.gouv.qc.ca/"><span style="color:blue">http://www.efficaciteenergetique.mrn.gouv.qc.ca</span></a></span><span lang="FR-CA" style="mso-fareast-language:FR-CA"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="FR" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:FR-CA">AVIS DE CONFIDENTIALITÉ</span></b><span lang="FR-CA" style="font-size:9.0pt;font-family:"Droid Serif";color:black;mso-fareast-language:FR-CA"><o:p></o:p></span></p>
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