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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The curves in the PNNL document are straight from the COMNET modeling guidelines.<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"><a href="https://comnet.org/modeling-guidelines">https://comnet.org/modeling-guidelines</a><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">If you want to check for specific manufacturer/model curves, EnergyPlus comes with a bunch. After installation check in the DataSets folder under the EnergyPlus
installation folder – Chillers.idf file. <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">These curves are fairly straight forward to use with eQuest.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-CA" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><img border="0" width="108" height="34" id="Picture_x0020_2" src="cid:image004.jpg@01D2C80B.20FDB8E0" alt="cid:image001.jpg@01D2A6E9.840756F0"></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:FR"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:6.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:FR"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Christopher R. Jones</span></b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">,
P.Eng.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Technical Specialist</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">WSP Canada Inc.</span></b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"><br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">2300 Yonge Street, Suite 2300<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Toronto, ON M4P 1E4 Canada</span><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"><br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">T +1 416-644-0252<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:EN-CA"><a href="http://www.wspgroup.ca/"><span style="color:blue">www.wspgroup.ca</span></a></span><u><span lang="EN-CA" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:blue;mso-fareast-language:EN-CA"><o:p></o:p></span></u></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#7F7F7F;mso-fareast-language:FR"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="text-autospace:none"><i><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#6EA900;mso-fareast-language:FR">Please consider the environment before printing...<o:p></o:p></span></i></p>
<p class="MsoNormal"><span lang="EN-CA" 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:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Equest-users [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Nicholas Caton via Equest-users<br>
<b>Sent:</b> Friday, May 05, 2017 6:30 PM<br>
<b>To:</b> Harshul Singhal <hsinghal@psdconsulting.com>; Rathna Shree <rathnashreep@yahoo.in><br>
<b>Cc:</b> equest-users@onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] Chiller curves for ASHRAE 90.1 2010<o:p></o:p></span></p>
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</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">IPLV is a functional metric for a consistent, “binary” pass/fail requirement for something resembling part-load performance between manufacturers. IPLV cannot be translated
into a part load performance curve for an energy simulation, however.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Here’s a technical recap for those curious/interested:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">IPLV (or NPLV) = 0.01A+0.42B+0.45C+0.12D<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:1.0in"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Where:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:1.0in"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">A = COP or EER @ 100% Load<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:1.0in"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">B = COP or EER @ 75% Load<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:1.0in"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">C = COP or EER @ 50% Load<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:1.0in"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">D = COP or EER @ 25% Load<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">A, B, C, and D are determined at various operating conditions stipulated by
<a href="https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0ahUKEwj1oNi-3tjTAhVIxCYKHWlbBjwQFggrMAE&url=http%3A%2F%2Fwww.ahrinet.org%2FApp_Content%2Fahri%2Ffiles%2Fstandards%2520pdfs%2FANSI%2520standards%2520pdfs%2FANSI.AHRI%2520Standard%2520550-590%2520(I-P)%2520with%2520Addendum%25203.pdf&usg=AFQjCNEwFDy4kJpL3HbxK4uiL8otyG9RoQ&sig2=yg-KUv7ja0SuR1v_kn_21g">
AHRI 550/590</a>, Section 5.4, Table 3 (page 41 of the linked PDF):<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:1.0in"><img border="0" width="326" height="293" id="Picture_x0020_3" src="cid:image005.png@01D2C80B.20FDB8E0"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">You can’t take a prescribed IPLV of, say, 13.0 and turn that into knowledge of what efficiency your chiller should reflect at 100% or 75% loading conditions. Even if an ASHRAE
standard or a manufacturer publishes those part load factors, you still are going to have conditions in reality (and your simulations) where it isn’t always 65 degrees outside while you’re 50% loaded (for example)… the major message/takeaway here is that IPLV
was made to marry manufacturers and laboratory conditions, to the general benefit of specifiers and prescriptive standards, not for us in the simulation world.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">That’s not to say IPLV can’t be made useful... Someone could (if so inclined) built a “AHRI chiller test bed” model to try and replicate AHRI lab conditions for your simulated
chiller. Custom hourly reports alongside a weather file coving the full range of AHRI conditions to “backtrack” the effective IPLV of a simulated chiller to see how closely the selected library or your own custom curves come to replicating the IPLV prescribed/tested.
If I had such a “test bed” model on-hand I’d share it with the community here, but I haven’t invested time to pursue that concept to completion yet.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">After some spot checking I observe the baseline curves in the cited PNNL reference link below do NOT match up with at least one set of library curves in eQUEST (the one that
came with v3.65 b7163 anyway)… they might match exactly elsewhere… has anyone done the legwork to assess what equipment/research was used to develop those curves in relation to the eQUEST curve library? They might be generally preferable as a default if they’re
built from trustable and better/more current sources, and if so I’d be inclined to transpose into a custom library file (and possibly share with the community thereafter)…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">~Nick<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#3A7A46"><img border="0" width="726" height="9" id="Picture_x0020_1" src="cid:image006.png@01D2C80B.20FDB8E0"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#3A7A46">Nick Caton, P.E., BEMP</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#3A7A46"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469"> Senior Energy Engineer</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469"> Regional Energy Engineering Manager<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469"> Energy and Sustainability Services</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469"> Schneider Electric</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:8.0pt;font-family:"Arial",sans-serif;color:#57B069">D </span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">913.564.6361
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">M </span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">785.410.3317
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">F </span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">913.564.6380</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">E </span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><a href="mailto:nicholas.caton@schneider-electric.com"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">nicholas.caton@schneider-electric.com</span></a><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">15200 Santa Fe Trail Drive<br>
Suite 204<br>
Lenexa, KS 66219<br>
United States</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"><o:p> </o:p></span></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"> Equest-users [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Harshul Singhal via Equest-users<br>
<b>Sent:</b> Friday, May 05, 2017 8:17 AM<br>
<b>To:</b> Rathna Shree <<a href="mailto:rathnashreep@yahoo.in">rathnashreep@yahoo.in</a>>;
<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> Re: [Equest-users] Chiller curves for ASHRAE 90.1 2010<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">I would suggest to use the values from the given reference manual:
<a href="http://www.pnnl.gov/main/publications/external/technical_reports/PNNL-25130.pdf">
http://www.pnnl.gov/main/publications/external/technical_reports/PNNL-25130.pdf</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">I don’t use eQuest these days but a cross-check will be helpful to generate the correct energy consumption figures.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Trebuchet MS",sans-serif;color:black">Harshul Singhal
</span></b><b><span style="font-size:8.0pt;font-family:"Trebuchet MS",sans-serif;color:black">LEED AP BD+C, CMVP</span></b><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:#5F5E5F">Building Energy Modeling Analyst</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"><a href="http://psdconsulting.com/" target="_blank"><span style="color:blue">psdconsulting.com</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></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"> Equest-users [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Rathna Shree via Equest-users<br>
<b>Sent:</b> Friday, May 05, 2017 6:28 AM<br>
<b>To:</b> Equest-users <<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>><br>
<b>Subject:</b> [Equest-users] Chiller curves for ASHRAE 90.1 2010<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">Dear All,<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">Can we use the default chiller curves available in Equest while constructing the baseline case using ASHRAE 90.1 2010? <o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">Since the IPLV changes from previous ASHRAE standard, is it required to change the part load curve?<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">Regards,<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">Rathnashree<o:p></o:p></span></p>
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