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<p class="MsoNormal"><span style="color:#1F497D">Great idea in theory, but good luck getting that much data from a vendor. Also, I don’t think there is a development team anymore, they all work on E+ now.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I was just looking at this today, I had a job with scroll chillers. Just at a glance I noticed the EIR =f(PLR) curve is a lot more linear than the screw chiller curve. The limited part load data I had for my
chiller seemed to suggest it was a lot more non linear. So your mileage may vary. Also make sure that you normalize any curves that you use to your design EIR. The default curve is EIR2(1) = .1305 .
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Elec<sub>hour</sub> = Cap<sub>hour</sub> * EIR * EIR1f(t1,t2) * EIR2f(PLR) / 3413 Btu/kW<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">So if you don’t normalize it is going to think it’s using a fraction of the energy that it should be.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">Brendan Hall,
</span><span style="font-size:10.0pt;color:#1F497D">M.Sc., LEED AP BD+C<br>
</span><span style="color:#1F497D">Engineer, Mechanical</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.5pt;font-family:"Arial","sans-serif";color:red">karpinski<br>
</span><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#1F497D">ENGINEERING<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D">3135 Euclid Avenue</span><span style="color:#1F497D"><br>
</span><span style="font-size:10.0pt;color:#1F497D">Cleveland, OH 44115</span><span style="color:#1F497D"><br>
</span><b><span style="font-size:10.0pt;color:#1F497D">P</span></b><span style="font-size:10.0pt;color:#1F497D"> 216.391.3700 x 3111<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="SV" style="font-size:10.0pt;color:#1F497D">E </span></b><span lang="SV" style="font-size:10.0pt;color:#1F497D">
</span><span style="font-size:10.0pt;color:#1F497D"><a href="mailto:bhall@karpinskieng.com"><span lang="SV" style="color:#1F497D;text-decoration:none">bhall@karpinskieng.com</span></a></span><span lang="SV" style="font-size:10.0pt;color:#1F497D"><br>
<b>W</b> www.</span><span style="font-size:10.0pt;color:#1F497D"><a href="http://www.karpinskieng.com/" title="http://www.karpinskieng.com/"><span lang="SV" style="color:#1F497D;text-decoration:none">karpinskieng.com</span></a></span><span lang="SV" style="font-size:10.0pt;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="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-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Howe, Timothy<br>
<b>Sent:</b> Tuesday, April 10, 2012 5:35 PM<br>
<b>To:</b> Bishop, Bill; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] Scroll chiller curves in DOE-2 library<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:10.0pt;font-family:"Arial","sans-serif";color:blue">Bill,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue">If you have the time, why don’t you get the vendor rep send you over some data which you can make into curves? See the attached docs if you have not already used/have
them. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue">Steven Gates created the word doc and Jeremy McClanathan the excel spreadsheet.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue">I would not trust those curves unless someone on the eQUEST development team can validate them.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue">Tim.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:black">Timothy Howe, MS, LEED® AP BD+C</span></b><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:black"><br>
Mechanical Engineer<br>
Stantec<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:gray">61 Commercial Street<br>
Rochester NY 14614<br>
Ph: (585) 413-5347<br>
Fx: (585) 272-1814<br>
Cell: (585) 330-8681<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Arial Narrow","sans-serif";color:blue"><a href="http://www.stantec.com"><b><span style="color:#993333;text-decoration:none">stantec</span></b><span style="color:#003F6E;text-decoration:none">.com</span></a>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:black">The content of this email is the confidential property of Stantec and should not be copied, modified, retransmitted, or used for any purpose except with Stantec's
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:Webdings;color:#008040">ü</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:blue"> </span><span style="font-size:10.0pt;font-family:"Arial Narrow","sans-serif";color:#008040">Please
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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"">
<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a> [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Bishop, Bill<br>
<b>Sent:</b> Tuesday, April 10, 2012 5:29 PM<br>
<b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] Scroll chiller curves in DOE-2 library<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am modeling a new air-cooled scroll chiller, but eQUEST doesn’t have a “scroll” chiller type. I’m guessing the “screw” chiller type is the closest option. Out of curiosity, I searched the library and found the following performance curves:<o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in">ScrollChlrAirCoolEIR-fPLR<o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in">ScrollChlrAirCoolEIR-fCHW&OAT<o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in">ScrollChlrAirCoolCap-fCHW&OAT<o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in"><o:p> </o:p></p>
<p class="MsoNormal">Using these curves greatly reduced (by 33%) the cooling energy vs. the default ScrewAir-EIR and ScrewAir-Cap curves. Did I find the eQUEST version of a video game cheat code? (Any reason I shouldn’t use these ScrollChlr curves?)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Bill<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><a href="mailto:wbishop@pathfinder-ea.com"><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium","sans-serif";color:black;text-decoration:none"><img border="0" width="481" height="118" id="_x0000_i1029" src="cid:image001.png@01CD1741.4CBFE550"></span></b></a><o:p></o:p></p>
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