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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D">Thanks Maria,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D">This question is for small, split system AC units, no duct work. The shop drawing doesn’t provide an external static pressure drop, not total.
The shop drawing does not include the rated fan motor power. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D">I will check with the design team to see if they can get the supplier to provide the answer.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><img width="108" height="43" id="_x0000_i1029" src="cid:image001.png@01D0BB01.57AC85B0" alt="cid:image003.png@01D09C46.E75BA0D0"></span><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";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/">www.wspgroup.com</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:11.0pt;font-family:"Franklin Gothic Book","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""> Equest-users [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Maria Karpman<br>
<b>Sent:</b> Friday, July 10, 2015 11:06 AM<br>
<b>To:</b> 'Nicholas Caton'; Jones, Christopher; 'Equest-users'<br>
<b>Subject:</b> Re: [Equest-users] Efficiency conversions revisited<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I believe example below from 90.1 2007 User’s Manual answers the COP part of your question. (Note that all of the parameters in the Q portion of the example
are for ARI conditions, which are usually identified in manufacturer’s catalogs).<o:p></o:p></span></p>
<p class="MsoNormal"><img border="0" width="546" height="456" id="Picture_x0020_1" src="cid:image002.png@01D0BB01.57AC85B0"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Fan power modeled in the proposed design must come from project drawings. If it is not shown, I would ask design team to add it
as this is required for documenting code compliance: <o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:10.0pt">6.5.3.1.2 Motor Nameplate Horsepower.
</span></b><span style="font-size:10.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt">….The fan bhp must<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt">be indicated on the design documents to allow for compliance<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt">verification by the code official.</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Alternatively, you can calculate fan power as BHP=PD × CFM/4131, where PD is the
<i>total</i> pressure drop (not just external pressure drop). PD should again come from design team. BHP can then be converted to Watts (fan input power) as bhp × 746 / Fan Motor Efficiency.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hope this helps,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Maria<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">--
<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif";color:#666666">Maria Karpman
</span></b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif";color:#666666">LEED AP, BEMP, CEM</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif";color:#666666">________________</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif";color:#666666">Karpman Consulting<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#666666"><a href="http://www.karpmanconsulting.net/">www.karpmanconsulting.net</a>
</span><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:#666666">Phone </span><span style="font-size:7.5pt;font-family:"Helvetica","sans-serif";color:#666666;background:white">860.430.1909 </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#666666">41C New London Turnpike</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#666666">Glastonbury, CT 06033</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","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""> Nicholas Caton [<a href="mailto:ncaton@catonenergy.com">mailto:ncaton@catonenergy.com</a>]
<br>
<b>Sent:</b> Thursday, July 09, 2015 5:41 PM<br>
<b>To:</b> Jones, Christopher; Maria Karpman; Equest-users<br>
<b>Subject:</b> RE: Efficiency conversions revisited<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060">I haven’t heard any rumors of GBCI enforcing/requesting 90.1-2013 be utilized… yet.
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060">Based on the pace of LEED’s 90.1 adoption, it seems to me by the time LEED gets around to 90.1-2013 ASHRAE may well have revised/fleshed out further those passages
(I’m expecting the Ec/Et issue for large boilers to eventually be formally addressed eventually). Until that time comes I’m pretty sure it’s up to the modeler’s discretion to use any method that is considerate of the requirements in play and applied consistently
between projects.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060">I noted you’re talking about “actual” equipment with a cutsheet to reference: GBCI shouldn’t have a problem with you keeping fan energy in your cooling/heating
EIR inputs if the actual system fan does not operate independently of the remote unit. Any effort to pull the fan energy out of your cooling/heating EIR inputs by such curves/equations would net the same results and wouldn’t be meaningful.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060">My copy of 90.1-07 is boxed up right now so I can’t directly cite, but the same passage mandating continuous fan operation during occupied hours for baseline
systems says not to pull fan energies out for cycling systems… all that passage is specific to baseline systems but the framework should carry over to allowing you to simulate the proposed systems in the same fashion. Keep in mind that passage and the new
stuff Maria copied us on below is all specific to BASELINE systems and isn’t directing how to simulate the proposed/actual counterparts ;).</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060">Regards,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060">~Nick</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060"> </span><o:p></o:p></p>
<div>
<p class="MsoNormal"><b><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#002060">NICK CATON, P.E.</span></b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif";color:#1F497D"><br>
</span><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#561782">Owner</span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#561782"> </span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#561782">Caton Energy Consulting</span></b><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:black"><br>
</span><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> 1150 N. 192<sup>nd</sup> St., #4-202</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> Shoreline, WA 98133<br>
office: 785.410.3317</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#561782"><a href="www.catonenergy.com"><span style="color:#561782">www.catonenergy.com</span></a></span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#002060"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> Jones, Christopher [mailto:<a href="mailto:Christopher.r.Jones@wspgroup.com">Christopher.r.Jones@wspgroup.com</a>]
<br>
<b>Sent:</b> Thursday, July 09, 2015 12:10 PM<br>
<b>To:</b> Maria Karpman; 'Nicholas Caton'; 'Equest-users'<br>
<b>Subject:</b> Efficiency conversions revisited</span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D">I am hoping for some insight for modeling the efficiencies of split system heat pumps and other such stand alone systems.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D">In this case, the shop drawing provides the ARI rated efficiencies which include the fan power. But this shop drawing does not provide the fan
motor power.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D">In the past I would convert the rated EER to COP using COP = EER/3.4121 and I would assume no fan power as the rating includes the fan power.
But this project is being submitted to the USGBC and I am worried that the GBCI may have an issue with this.
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D">As Maria pointed out, 90.1-2013 now provides the formula to convert EER to COP, removing the fan power. The baseline fan power would be calculated
using the formulas in G3.1.2.10. Would it be best to use the same method to calculate the proposed case fan power and COP?</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Franklin Gothic Book","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><img border="0" width="108" height="43" id="Picture_x0020_2" src="cid:image001.png@01D0BB01.57AC85B0" alt="cid:image003.png@01D09C46.E75BA0D0"></span><o:p></o:p></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</span><o:p></o:p></p>
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<p class="MsoNormal"><b><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">WSP Canada Inc.</span></b><o:p></o:p></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</span><o:p></o:p></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</span><o:p></o:p></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</span><o:p></o:p></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</span><o:p></o:p></p>
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<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/">www.wspgroup.com</a>
</span><o:p></o:p></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 [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Maria Karpman<br>
<b>Sent:</b> Tuesday, May 26, 2015 10:18 AM<br>
<b>To:</b> 'Nicholas Caton'; 'Equest-users'<br>
<b>Subject:</b>: Reply</span><span lang="JA" style="font-size:10.0pt;font-family:"MS UI Gothic","sans-serif";mso-fareast-language:JA">：</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> The problem of minimum equipment efficiency requirement
of Ashrae 90.1-2007</span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">As far as SEER to EER and HSPF to COP conversions, 90.1 2013 finally provided these in G3.1.2.1, along with the formulas for extracting fan power from efficiency
ratings: </span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:10.0pt;font-family:TimesNewRomanPS-BoldMT"> </span></b><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:10.0pt;font-family:TimesNewRomanPS-BoldMT">G3.1.2.1 Equipment Efficiencies.
</span></b><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">All HVAC equipment</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">in the baseline building design shall be modeled at the mini-</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">mum efficiency levels, both part load and full load, in accordance</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">with Section 6.4. Chillers shall use Path A efficiencies</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">as shown in Table 6.8.1-3 where efficiency ratings include</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">supply fan energy, the efficiency rating shall be adjusted to</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">remove the supply fan energy. For Baseline HVAC Systems 1,</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">2, 3, 4, 5, and 6, calculate the minimum COP</span><i><span style="font-size:8.0pt;font-family:TimesNewRomanPS-ItalicMT">nfcooling
</span></i><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">and</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">COP</span><i><span style="font-size:8.0pt;font-family:TimesNewRomanPS-ItalicMT">nfheating
</span></i><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">using the equation for the applicable performance</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">rating as indicated in Tables 6.8.1-1 through 6.8.1-4.</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">Where a full- and part-load efficiency rating is provided in</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">Tables 6.8.1-1 through 6.8.1-4, the full-load equation below</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">shall be used:</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT"> </span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT;background:yellow">COP</span><i><span style="font-size:8.0pt;font-family:TimesNewRomanPS-ItalicMT;background:yellow">nfcooling
</span></i><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT;background:yellow">= 7.84E-8 × EER ×
</span><i><span style="font-size:10.0pt;font-family:TimesNewRomanPS-ItalicMT;background:yellow">Q
</span></i><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT;background:yellow">+ 0.338 × EER</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT;background:yellow">COP</span><i><span style="font-size:8.0pt;font-family:TimesNewRomanPS-ItalicMT;background:yellow">nfcooling
</span></i><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT;background:yellow">= –0.0076 × SEER</span><span style="font-size:8.0pt;font-family:TimesNewRomanPSMT;background:yellow">2
</span><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT;background:yellow">+ 0.3796 × SEER</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT;background:yellow">COP</span><i><span style="font-size:8.0pt;font-family:TimesNewRomanPS-ItalicMT;background:yellow">nfheating
</span></i><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT;background:yellow">= 1.48E-7 × COP</span><i><span style="font-size:8.0pt;font-family:TimesNewRomanPS-ItalicMT;background:yellow">47
</span></i><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT;background:yellow">×
</span><i><span style="font-size:10.0pt;font-family:TimesNewRomanPS-ItalicMT;background:yellow">Q
</span></i><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT;background:yellow">+ 1.062 × COP</span><i><span style="font-size:8.0pt;font-family:TimesNewRomanPS-ItalicMT;background:yellow">47</span></i><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT;background:yellow">(applies to heat-pump heating efficiency only)</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT;background:yellow">COP</span><i><span style="font-size:8.0pt;font-family:TimesNewRomanPS-ItalicMT;background:yellow">nfheating
</span></i><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT;background:yellow">= –0.0296 × HSPF</span><span style="font-size:8.0pt;font-family:TimesNewRomanPSMT;background:yellow">2
</span><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT;background:yellow">+ 0.7134 × HSPF</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT"> </span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">where COP</span><i><span style="font-size:8.0pt;font-family:TimesNewRomanPS-ItalicMT">nfcooling
</span></i><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">and COP</span><i><span style="font-size:8.0pt;font-family:TimesNewRomanPS-ItalicMT">nfheating
</span></i><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">are the packaged HVAC</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">equipment cooling and heating energy efficiency, respectively,</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">to be used in the baseline building, which excludes</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">supply fan power, and
</span><i><span style="font-size:10.0pt;font-family:TimesNewRomanPS-ItalicMT">Q </span>
</i><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">is the AHRI-rated cooling capacity</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">in Btu/h.</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT"> </span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">EER, SEER, COP, and HSPF shall be at AHRI test conditions.</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">Fan energy shall be modeled separately according to</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT">Section G3.1.2.10.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:TimesNewRomanPSMT"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hope this helps,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Maria</span><o:p></o:p></p>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">--
</span><o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif";color:#666666">Maria Karpman
</span></b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif";color:#666666">LEED AP, BEMP, CEM</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif";color:#666666">________________</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana","sans-serif";color:#666666">Karpman Consulting</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#666666"><a href="http://www.karpmanconsulting.net/">www.karpmanconsulting.net</a>
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:#666666">Phone </span><span style="font-size:7.5pt;font-family:"Helvetica","sans-serif";color:#666666;background:white">860.430.1909 </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#666666">41C New London Turnpike</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#666666">Glastonbury, CT 06033</span><o:p></o:p></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 [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Nicholas Caton<br>
<b>Sent:</b> Friday, May 29, 2015 11:17 AM<br>
<b>To:</b> </span><span lang="JA" style="font-size:10.0pt;font-family:"PMingLiU","serif";mso-fareast-language:JA">赵永青</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">; Equest-users<br>
<b>Subject:</b> Re: [Equest-users] RE: Reply</span><span lang="JA" style="font-size:10.0pt;font-family:"MS UI Gothic","sans-serif";mso-fareast-language:JA">：</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> The problem of minimum equipment
efficiency requirement of Ashrae 90.1-2007</span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Yeah same for my case (not AFUE), though that’s good thinking!
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">When I do have an AFUE boiler requirement, I have found it easier to stick with the default library curves / standby inputs & to determine the full load HIR
with the following equations:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">HIR = f(AFUE):
<i> [Reference: California Energy Commission's 2005 "Nonresidential Alternative Calculation Method (ACM) Approval Manual"]</i>
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> For single packaged central furnace (baseline system #3): HIR = (.005163*AFUE+0.4033)^-1
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> For Boilers where 75 ≤ AFUE < 80 (Baseline systems #1, #5 ): HIR = (0.1*AFUE+72.5)^-1*100
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> For Boilers where 80 ≤ AFUE < 100 (Baseline systems #1, #5 ): HIR = (0.875*AFUE+10.5)^-1*100
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">For completeness, here are the other equations I keep handy for converting other seasonal efficiencies to steady-state inputs:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">EER=f(SEER):
<i>[Reference: NREL Building America House Simulation Protocol (Revised), citing Wassmer, M. (2003). A Component-Based Model for Residential Air Conditioner and Heat Pump Energy Calculations.]</i></span><o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">(AC) (Baseline Systems #1, #3, #5 & #6): EER<sub>NET</sub>= -0.0182*SEER^2 + 1.1088*SEER</span><o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">(HP-cooling) (Baseline Systems #2 & #4): EER<sub>NET</sub> = -0.02*SEER^2 + 1.1268*SEER</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">COP=f(HSPF):
<i>[Reference: Wassmer, M. (2003). A Component-Based Model for Residential Air Conditioner and Heat Pump Energy Calculations. Masters Thesis, University of Colorado at Boulder.]</i></span><o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">(HP-heating) (Baseline Systems #2 & #4): COP<sub>NET</sub> = -0.0255*HSPF^2 + 0.6239*HSPF</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">IIRC, each of the above cited references determines these equations based on a survey of real-world equipment from various manufacturers in order to plot a
quadratic trendline. That trendline establishes the relationship between steady state full load efficiency and the associated seasonal efficiency rating. In time (or until such equations are added to Appendix G to regulate how modelers approach seasonal
efficiency requirements), it may be appropriate to seek out similar research to update these equations every so often, but for the present and past couple of years I have had zero problems using this family of equations for my LEED reviews.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">~Nick</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D">NICK CATON, P.E.</span></b><span style="font-size:11.0pt;font-family:"Verdana","sans-serif";color:#1F497D"><br>
</span><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#561782">Owner</span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#561782"> </span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#561782">Caton Energy Consulting</span></b><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:black"><br>
</span><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> 1150 N. 192<sup>nd</sup> St., #4-202</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> Shoreline, WA 98133<br>
office: 785.410.3317</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#561782"><a href="www.catonenergy.com"><span style="color:#561782">www.catonenergy.com</span></a></span><o:p></o:p></p>
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You are receiving this communication because you are listed as a current WSP contact. Should you have any questions regarding WSP’s electronic communications policy, please consult our Anti-Spam Commitment
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