<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>I'm with Nick. I find the GBCI reviewer comment as reported to be a bit strange and I wonder if there is some context missing. Is it possible that the seasonal efficiency was much lower than 80% in the baseline, suggesting either oversizing of the baseline boilers or a curve that is different from the proposed curve? </div><div><br></div><div>Best,</div><div>Dan</div><div><br><div>—</div><div>Sent from my phone</div></div><div><br>On May 24, 2015, at 11:38 AM, Nicholas Caton <<a href="mailto:ncaton@catonenergy.com">ncaton@catonenergy.com</a>> wrote:<br><br></div><blockquote type="cite"><div><meta http-equiv="Content-Type" content="text/html; charset=gb2312">
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--></style><div class="WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">I’m happy you are arriving at the same result, however to be clear I do not think the reviewer is correct to assert the prescribed efficiency is anything other than the full-load efficiency.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Follow the cited Test Procedure CFR 431 led me to:</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><a href="https://www.law.cornell.edu/cfr/text/10/431.86">https://www.law.cornell.edu/cfr/text/10/431.86</a></span></p><p class="MsoNormal" style="text-indent:.5in"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">“§ 431.86 (c) (3) (ii) Thermal Efficiency. Use the calculation procedure for the thermal efficiency test specified in Section 11.1 of the HI BTS-2000, Rev 06.07 (incorporated by reference, see§ 431.85).”</span></i></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">I then found the referenced HI standard here (PDF link): <a href="https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CB8QFjAA&url=https%3A%2F%2Flaw.resource.org%2Fpub%2Fus%2Fcfr%2Fibr%2F004%2Fhi.BTS-2000.2007.pdf&ei=R-dhVZr3FoffoASKxYC4Bw&usg=AFQjCNGb2HahzcO_Q-BftBzCugY5sPtifg&sig2=k1fojL9GcpjnN6T2fdzOug">https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CB8QFjAA&url=https%3A%2F%2Flaw.resource.org%2Fpub%2Fus%2Fcfr%2Fibr%2F004%2Fhi.BTS-2000.2007.pdf&ei=R-dhVZr3FoffoASKxYC4Bw&usg=AFQjCNGb2HahzcO_Q-BftBzCugY5sPtifg&sig2=k1fojL9GcpjnN6T2fdzOug</a></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">In that standard, section 5 reads:</span></p><p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><b><span style="font-family:"Arial",sans-serif">5.0 TYPES OF TESTS</span></b></p><p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">5.1 </span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Thermal Efficiency Test</span></p><p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Shall consist of a test point conducted at 100% ± 2% of the nameplate boiler input. The test shall</span></p><p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">yield a complete accounting of the energy input in terms of output and losses.</span></p><p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">5.2 </span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Combustion Efficiency Test</span></p><p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Shall consist of a test point conducted at 100% ± 2% of the input to the boiler and shall yield an</span></p><p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">accounting of energy input in terms of products of combustion only.</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">From this, it is clear Et and Ec as prescribed by 90.1 are only the efficiencies as measured at full load. The test procedures following under section 9 deliberately exclude the effects of warmup/standby (equipment is made to warm up and arrive at the mandated operating conditions prior to measurements).</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Section 11.1 of the standard prescribes all the calculations required, including Et = 100*Q</span><span style="font-size:8.0pt;font-family:"Calibri",sans-serif;color:#1f497d">OUT</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> / Q</span><span style="font-size:8.0pt;font-family:"Calibri",sans-serif;color:#1f497d">IN</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> , however the preceding sections makes clear we are in no way standardizing part load performance or warmup/standby performance.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Rounding back to 90.1… section 6.4.1.1 further cements the notion (“packaged boilers” fall under 1992 EPACT):</span></p><p class="MsoNormal"><img border="0" width="398" height="337" id="_x0000_i1028" src="cid:image001.png@01D095FD.12D7EE30"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">All this reinforces the point that 90.1 simply does not prescribe part load performance for baseline boilers. To perform a simulation in compliance with Appendix G the onus is upon the energy modeler to make reasonable, defensible assumptions on that front. I don’t see how forcing full-load efficiencies at all part-load conditions and removing standby/startup operation energies is more reasonable or reflects reality better than the defaults. </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">If this is a new GBCI position they plan to hard-line on, then I would speculate it would be equally fair (albeit far more unrealistic for condensing cases) to give your proposed boilers the same treatment… extra work for a step backwards from reality…?</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Thoughts?</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">~Nick</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></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></p><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#561782"> </span></b></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></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></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><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#561782"></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p><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"> </span><span lang="ZH-CN" style="font-size:11.0pt;font-family:SimSun">冷面寒枪</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> [mailto:<a href="mailto:zhaoyongqing1987@qq.com">zhaoyongqing1987@qq.com</a>] <br><b>Sent:</b> Sunday, May 24, 2015 7:13 AM<br><b>To:</b> Nicholas Caton; Julien Marrec<br><b>Cc:</b> <a href="mailto:equest-users@lists.onebuilding">equest-users@lists.onebuilding</a><br><b>Subject:</b> </span><span lang="ZH-CN" style="font-size:11.0pt;font-family:SimSun">回复：</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">RE: [Equest-users] Reply</span><span lang="ZH-CN" style="font-size:11.0pt;font-family:SimSun">：</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> The problem of minimum equipment efficiency requirement of Ashrae 90.1-2007</span></p><p class="MsoNormal"> </p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana",sans-serif">Hi,Nick</span></p><div><p class="MsoNormal"> </p><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana",sans-serif"> Than you for your insight!</span></p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana",sans-serif"> Except default curve and start up time, Min-Ratio also will result in discrepancy between annual equivalent HIR and nominal HIR. After I revised curve ,set start-time and Min-Ratio to 0,and hourly report and PS-C report indicate that the annual equivalent HIR is accord with nominal HIR</span></p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Verdana",sans-serif"> </span></p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal"> </p></div><div><div><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial Narrow",sans-serif;color:#909090">------------------</span></p></div><div><div><div><p class="MsoNormal"><strong><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#3366ff">Yongqing Zhao</span></strong><span style="font-size:10.5pt;font-family:"Verdana",sans-serif;color:black"></span></p></div><div><p class="MsoNormal"><strong><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#006600">Changsha Green Building & Energy Saving Technology CO.,LTD</span></strong><b><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#006600"><br></span></b><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#3366ff">NO.438,Shaoshan Road,Changsha,Hunan,China<br>Telephone:13574805636</span><span style="font-size:10.5pt;font-family:"Verdana",sans-serif;color:black"></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#3366ff"><a href="mailto:Email%3Azhaoyongqing1987@126.com">Email:zhaoyongqing1987@126.com</a></span><span style="font-size:10.5pt;font-family:"Verdana",sans-serif;color:black"></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black"> <a href="mailto:503271081@qq.com">503271081@qq.com</a></span><span style="font-size:10.5pt;font-family:"Verdana",sans-serif;color:black"> </span></p></div></div></div></div><div><p class="MsoNormal"> </p></div><div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial Narrow",sans-serif">------------------ </span><span lang="JA" style="font-size:9.0pt;font-family:"MS Mincho"">原始</span><span lang="JA" style="font-size:9.0pt;font-family:"Microsoft JhengHei",sans-serif">邮</span><span lang="JA" style="font-size:9.0pt;font-family:"MS Mincho"">件</span><span style="font-size:9.0pt;font-family:"Arial Narrow",sans-serif"> ------------------</span></p></div><div><div><p class="MsoNormal" style="background:#efefef"><b><span lang="JA" style="font-size:9.0pt;font-family:"Microsoft JhengHei",sans-serif">发</span></b><b><span lang="JA" style="font-size:9.0pt;font-family:"MS Mincho"">件人</span></b><b><span style="font-size:9.0pt">:</span></b><span style="font-size:9.0pt"> "Nicholas Caton";<<a href="mailto:ncaton@catonenergy.com">ncaton@catonenergy.com</a>>;</span></p></div><div><p class="MsoNormal" style="background:#efefef"><b><span lang="JA" style="font-size:9.0pt;font-family:"Microsoft JhengHei",sans-serif">发</span></b><b><span lang="JA" style="font-size:9.0pt;font-family:"MS Mincho"">送</span></b><b><span lang="JA" style="font-size:9.0pt;font-family:"Microsoft JhengHei",sans-serif">时间</span></b><b><span style="font-size:9.0pt">:</span></b><span style="font-size:9.0pt"> 2015</span><span lang="JA" style="font-size:9.0pt;font-family:"MS Mincho"">年</span><span style="font-size:9.0pt">5</span><span lang="JA" style="font-size:9.0pt;font-family:"MS Mincho"">月</span><span style="font-size:9.0pt">24</span><span lang="JA" style="font-size:9.0pt;font-family:"MS Mincho"">日</span><span style="font-size:9.0pt">(</span><span lang="JA" style="font-size:9.0pt;font-family:"MS Mincho"">星期天</span><span style="font-size:9.0pt">) </span><span lang="JA" style="font-size:9.0pt;font-family:"MS Mincho"">晚上</span><span style="font-size:9.0pt">9:53</span></p></div><div><p class="MsoNormal" style="background:#efefef"><b><span lang="JA" style="font-size:9.0pt;font-family:"MS Mincho"">收件人</span></b><b><span style="font-size:9.0pt">:</span></b><span style="font-size:9.0pt"> "</span><span lang="JA" style="font-size:9.0pt;font-family:"Microsoft JhengHei",sans-serif">赵</span><span lang="JA" style="font-size:9.0pt;font-family:"MS Mincho"">永青</span><span style="font-size:9.0pt">"<<a href="mailto:503271081@qq.com">503271081@qq.com</a>>; "Julien Marrec"<<a href="mailto:julien.marrec@gmail.com">julien.marrec@gmail.com</a>>; </span></p></div><div><p class="MsoNormal" style="background:#efefef"><b><span lang="JA" style="font-size:9.0pt;font-family:"MS Mincho"">抄送</span></b><b><span style="font-size:9.0pt">:</span></b><span style="font-size:9.0pt"> "<a href="mailto:equest-users@lists.onebuilding">equest-users@lists.onebuilding</a>"<<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>>; </span></p></div><div><p class="MsoNormal" style="background:#efefef"><b><span lang="JA" style="font-size:9.0pt;font-family:"MS Mincho"">主</span></b><b><span lang="JA" style="font-size:9.0pt;font-family:"Microsoft JhengHei",sans-serif">题</span></b><b><span style="font-size:9.0pt">:</span></b><span style="font-size:9.0pt"> RE: [Equest-users] Reply</span><span lang="JA" style="font-size:9.0pt;font-family:"MS Mincho"">：</span><span style="font-size:9.0pt"> The problem of minimum equipment efficiency requirement of Ashrae 90.1-2007</span></p></div></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal" style="">I received some similar review language very recently suggesting 80% efficiency is expected at all/most part load conditions for the baseline boiler…. Similar context in that case with the boiler rarely operating near full load.</p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style="">My comment has other issues that would cloud the topic at-hand, but here is truncated version:</p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style="margin-left:.5in">“…Furthermore, the average boiler efficiencies in the Baseline PS-C output reports, calculated by dividing the boiler energy consumption by the annual boiler heating energy generated was… [approximately 5% lower than the nominal efficiency input & documented]. Revise the baseline boiler efficiency to 80% and revise the boiler curve for the Baseline case as necessary to have an average efficiency that is near 80%. Provide updated PS-C reports for the Baseline confirming that the average baseline efficiency is near 80%.”</p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style="">This is the first time I have run into commentary checking up on PS-C’s output at all, and I’m using the same library curves as always for typical baseline boilers. </p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style="">I believe the PS-C discrepancy is explained both by the non-flat library curve and by the boiler’s default start-up loads, in combination.</p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style="">Here is the default library curve – it is (roughly, but not quite) linear:</p><p class="MsoNormal" style=""><image002.png></p><p class="MsoNormal" style=""><image003.png></p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style="">[For those unfamiliar, the Y-axis is a unitless multiplier] </p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style="">If I’m not mistaken, this curve serves double-duty: it simultaneously applies the hourly PLR to the full capacity (as either input or auto-sized) and also accounts for increased HIR (lower efficiency) as the PLR drops. My understanding in equation form:</p><p class="MsoNormal" style="">Energy Consumed (for the hour) = (Boiler full capacity as input/autosized) * (Boiler nominal HIR input @ full load) * HIRf(PLR)</p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style="">If all of that is true, a perfectly “flat efficiency” curve, returning your nominal input HIR at all efficiencies, would therefore be Z = X. That’s plotted above for reference with a light/thin line. </p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style="">Even with such a “flat efficiency” curve applied to a test-case, PS-C’s outputs still suggest an annual equivalent HIR higher than the nominal input. Zeroing out the startup/standby inputs as well is required to get PS-C to report your nominal HIR = annual fuel / annual load:</p><p class="MsoNormal" style=""><img border="0" width="585" height="179" id="Picture_x0020_5" src="cid:image004.png@01D095FD.12D7EE30"></p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style="">I think the correct response (which perhaps I’ve mostly composed above) is to demonstrate the causes (library curve shape, startup/standby defaults), and to assert these are all appropriately applied to the baseline boiler, though <u>none of this is regulated by 90.1</u> to the best of my knowledge so it might be relatively shaky territory. </p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style="">I would wager 90% of all eQuest baseline boilers submitted to GBCI to date probably don’t mess with the library curves or standby/startup inputs, but that’s pure speculation on my part.</p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style="">Has anybody ever tried to explain/justify the default boiler curve and default startup/standby inputs? Do we know where those defaults come from?</p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style="">~Nick</p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style=""><b>NICK CATON, P.E.</b><br><b>Owner</b></p><p class="MsoNormal" style=""><b> </b></p><p class="MsoNormal" style=""><b>Caton Energy Consulting</b><br> 1150 N. 192<sup>nd</sup> St., #4-202</p><p class="MsoNormal" style=""> Shoreline, WA 98133<br> office: 785.410.3317</p><p class="MsoNormal" style=""><span style="color:#561782"><a href="http://www.catonenergy.com">www.catonenergy.com</a></span></p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style=""><b>From:</b> Equest-users [mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>???<br><b>Sent:</b> Sunday, May 24, 2015 5:34 AM<br><b>To:</b> Julien Marrec<br><b>Cc:</b> <a href="mailto:equest-users@lists.onebuilding">equest-users@lists.onebuilding</a><br><b>Subject:</b> [Equest-users] Reply<span lang="ZH-CN" style="font-size:11.0pt;font-family:SimSun">：</span> The problem of minimum equipment efficiency requirement of Ashrae 90.1-2007</p><p class="MsoNormal" style=""> </p><p class="MsoNormal" style="">Hi,<span class="grn">Julien </span></p><div><p class="MsoNormal" style=""> </p></div><div><p class="MsoNormal" style="">I understand his meaning is keep a constant efficiency and I know the flat efficiency in equest is a curve that is y=x, but I can't confirm if a constant efficiency is Ashrae 90.1-2007's original intent.</p></div><div><p class="MsoNormal" style=""> </p><div><div><div><p class="MsoNormal" style="">------------------</p></div><div><div><div><p class="MsoNormal" style=""><strong>Yongqing Zhao</strong></p></div><div><p class="MsoNormal" style=""><strong>Changsha Green Building & Energy Saving Technology CO.,LTD</strong><b><br></b>NO.438,Shaoshan Road,Changsha,Hunan,China<br>Telephone:13574805636</p></div><div><p class="MsoNormal" style=""><a href="mailto:Email%3Azhaoyongqing1987@126.com">Email:zhaoyongqing1987@126.com</a></p></div><div><p class="MsoNormal" style=""> <a href="mailto:503271081@qq.com">503271081@qq.com</a> </p></div></div></div></div><div><p class="MsoNormal" style=""> </p></div><div><div><p class="MsoNormal" style=""> </p></div><div><p class="MsoNormal" style=""> </p></div><div><p class="MsoNormal" style="">------------------ <span lang="JA" style="font-family:"MS Mincho"">原始</span><span lang="JA" style="font-family:"Microsoft JhengHei",sans-serif">邮</span><span lang="JA" style="font-family:"MS Mincho"">件</span> ------------------</p></div><div><div><p class="MsoNormal" style="background:#efefef"><b><span lang="JA" style="font-family:"Microsoft JhengHei",sans-serif">发</span></b><b><span lang="JA" style="font-family:"MS Mincho"">件人</span></b><b><span style="font-size:9.0pt">:</span></b><span style="font-size:9.0pt"> "Julien Marrec";<<a href="mailto:julien.marrec@gmail.com">julien.marrec@gmail.com</a>>;</span></p></div><div><p class="MsoNormal" style="background:#efefef"><b><span lang="JA" style="font-family:"Microsoft JhengHei",sans-serif">发</span></b><b><span lang="JA" style="font-family:"MS Mincho"">送</span></b><b><span lang="JA" style="font-family:"Microsoft JhengHei",sans-serif">时间</span></b><b><span style="font-size:9.0pt">:</span></b><span style="font-size:9.0pt"> 2015</span><span lang="JA" style="font-family:"MS Mincho"">年</span><span style="font-size:9.0pt">5</span><span lang="JA" style="font-family:"MS Mincho"">月</span><span style="font-size:9.0pt">24</span><span lang="JA" style="font-family:"MS Mincho"">日</span><span style="font-size:9.0pt">(</span><span lang="JA" style="font-family:"MS Mincho"">星期天</span><span style="font-size:9.0pt">) </span><span lang="JA" style="font-family:"MS Mincho"">晚上</span><span style="font-size:9.0pt">8:19</span></p></div><div><p class="MsoNormal" style="background:#efefef"><b><span lang="JA" style="font-family:"MS Mincho"">收件人</span></b><b><span style="font-size:9.0pt">:</span></b><span style="font-size:9.0pt"> "</span><span lang="JA" style="font-family:"Microsoft JhengHei",sans-serif">赵</span><span lang="JA" style="font-family:"MS Mincho"">永青</span><span style="font-size:9.0pt">"<<a href="mailto:503271081@qq.com">503271081@qq.com</a>>; </span></p></div><div><p class="MsoNormal" style="background:#efefef"><b><span lang="JA" style="font-family:"MS Mincho"">抄送</span></b><b><span style="font-size:9.0pt">:</span></b><span style="font-size:9.0pt"> "<a href="mailto:equest-users@lists.onebuilding">equest-users@lists.onebuilding</a>"<<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>>; </span></p></div><div><p class="MsoNormal" style="background:#efefef"><b><span lang="JA" style="font-family:"MS Mincho"">主</span></b><b><span lang="JA" style="font-family:"Microsoft JhengHei",sans-serif">题</span></b><b><span style="font-size:9.0pt">:</span></b><span style="font-size:9.0pt"> Re: [Equest-users] The problem of minimum equipment efficiency requirement of Ashrae 90.1-2007</span></p></div></div><div><p class="MsoNormal" style=""> </p></div><div><p class="MsoNormal" style="">Hey,</p></div><div><p class="MsoNormal" style=""> </p></div><div><p class="MsoNormal" style="">He's saying that you need to make sure that the curve boiler-fPLR gives you a constant efficiency. As far as I remember, the default atmospheric curve from equest is like this.</p></div><div><p class="MsoNormal" style="">Don't be confused by "flat". A flat efficiency curve is when you plot efficiency=f(PLR). In equest, it should be a curve that is y=x</p></div><div><p class="MsoNormal" style=""> </p></div><div><p class="MsoNormal" style="">Look at the curve you used.</p></div><div><p class="MsoNormal" style=""> </p></div><div><p class="MsoNormal" style="">Best,</p></div><div><p class="MsoNormal" style="">Julien</p></div><div><p class="MsoNormal" style=""><br>Envoyé de mon iPhone</p></div><div><p class="MsoNormal" style="margin-bottom:12.0pt"><br>Le 24 mai 2015 à 11:27, "<span lang="JA" style="font-family:"Microsoft JhengHei",sans-serif">赵</span><span lang="JA" style="font-family:"MS Mincho"">永青</span>" <<a href="mailto:503271081@qq.com">503271081@qq.com</a>> a écrit :</p></div><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"><div><div><p class="MsoNormal" style="">I get the energy model comments from LEED reviewer as following:</p></div><div><p class="MsoNormal" style=""> </p></div><div><p class="MsoNormal" style="">The narrative response indicates that the Baseline boiler has been modeled utilizing operating performance curves and a boiler HIR of 1.25. However, since the boiler operation HIR is based on the performance curves, the HIR is less than 1.25 in the part-load condition, which is inappropriate. Revise the Baseline boilers to include a flat efficiency of 80% for all part-loads. Provide eQuest input files or screen shots verifying the boiler efficiency has been modeled as required.</p></div><div><p class="MsoNormal" style=""> <<a href="mailto:545E22AD@FA528147.9F996155">545E22AD@FA528147.9F996155</a>></p></div><div><p class="MsoNormal" style="">However, I can not understand it very much. The minimum equipment efficiency requirement(80 % Et) of Ashrae 90.1-2007 should be base on full load condition.Why the LEED reviewer raise such a question?Any insight is appreciate!!</p></div><div><p class="MsoNormal" style=""> </p></div><div><p class="MsoNormal" style="">Thanks</p></div><div><div><p class="MsoNormal" style="">------------------</p></div><div><div><div><p class="MsoNormal" style=""><strong>Yongqing Zhao</strong></p></div><div><p class="MsoNormal" style=""><strong>Changsha Green Building & Energy Saving Technology CO.,LTD</strong><b><br></b>NO.438,Shaoshan Road,Changsha,Hunan,China<br>Telephone:13574805636</p></div><div><p class="MsoNormal" style="">Email:zhaoyongqing1987@<a href="http://126.com">126.com</a></p></div><div><p class="MsoNormal" style=""> <a href="mailto:503271081@qq.com">503271081@qq.com</a> </p></div></div></div></div><div><p class="MsoNormal" style=""> </p></div></div></blockquote><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"><div><p class="MsoNormal" style="">_______________________________________________<br>Equest-users mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><br>To unsubscribe from this mailing list send a blank message to <a href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a></p></div></blockquote></div></div></div></div></div></div></div>
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