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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Yongquing,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">I confirm that I am seeing the doubling of the CH-1-HEATING input electricity in the PS-F compared with PS-H when I run your file.
I have seen this doubling of the input electricity to a loop-to-loop heat pump chiller before.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">In the scenario where I previously saw the doubling of the chiller input energy, I had done as you appear to have – created a dummy
chilled water loop. In the scenario I had, the heat pump chillers did not generate hot water and chilled water simultaneously as the Loop-to-loop heat pump element in eQUEST does. So I created a no load dummy cooling loop which seemed to cause the doubling
of input electricity.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">I resolved the error by removing the dummy loop. This was done by having the heating chillers and the cooling loop-to-loop chillers
on the same chilled water and hot water loops but staged them with equipment controls. In reality, I had 4 chillers that either produced hot water or chilled water simultaneously. I modelled it as 8 chillers – 4 that provided heating only and 4 that provided
cooling only – but all were on the HW loop and all on the CHW loop. The heating equipment control only called on the heating chillers, the cooling equipment control only called on the cooling chillers. Then I tested to make sure they were not operating simultaneously
(they weren’t). This worked for me. In your scenario you may bump up against the limit of 10 pieces of equipment per primary loop so may have to combine some of your chillers.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hoping this helps.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Brian<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">PS – I appreciate the reminder as this issue may be cropping up on a current project and I had forgotten about the prior problem/solution.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:8.0pt;line-height:106%"><b><span style="line-height:106%;font-family:"Arial",sans-serif;color:#006298;mso-fareast-language:EN-US">Footprint<br>
<br>
</span></b><b><span style="font-size:10.0pt;line-height:106%;font-family:"Arial",sans-serif;color:#006298;mso-fareast-language:EN-US">Brian Fountain<br>
</span></b><span style="font-size:9.0pt;line-height:106%;font-family:"Arial",sans-serif;color:#3D3935;mso-fareast-language:EN-US">Associate<br>
</span><b><span style="font-size:9.0pt;line-height:106%;font-family:"Arial",sans-serif;color:#006892;mso-fareast-language:EN-US">d
</span></b><span style="font-size:9.0pt;line-height:106%;font-family:"Arial",sans-serif;color:#3D3935;mso-fareast-language:EN-US">416 572 8501</span><span style="font-size:9.0pt;line-height:106%;font-family:"Arial",sans-serif;color:#006892;mso-fareast-language:EN-US">
m </span><span style="font-size:9.0pt;line-height:106%;font-family:"Arial",sans-serif;color:#3D3935;mso-fareast-language:EN-US">416 562 6831<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;mso-fareast-language:EN-US"><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 <equest-users-bounces@lists.onebuilding.org>
<b>On Behalf Of </b>Yongqing via Equest-users<br>
<b>Sent:</b> October 26, 2020 10:54 AM<br>
<b>To:</b> equest-users <equest-users@lists.onebuilding.org><br>
<b>Subject:</b> [Equest-users] Why the metered energy consumption is two times higher than the energy counsumption reported by PS-H<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">CAUTION: EXTERNAL SENDER <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black">I am woriking on a project that served by loop to loop heat pump.However, when I model it in eQUEST, a very strange probem occured,which is the electricity consumption
metered by <a name="_Toc382906226">ELEC-METER is two times higher than the one reported by PS-H.Below is the output screenshot:<o:p></o:p></a></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_Toc382906226"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black">PS-H report<o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_Toc382906226"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black"><img width="1139" height="649" style="width:11.8645in;height:6.7604in" id="_x0000_i1025" src="cid:image001.png@01D6AB9C.08C71140"><o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_Toc382906226"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black">PS-F for EM2<o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_Toc382906226"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black"><img width="1110" height="638" style="width:11.5625in;height:6.6458in" id="_x0000_i1026" src="cid:image002.png@01D6AB9C.08C71140"><o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_Toc382906226"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_Toc382906226"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black">The electricity meter is only attached to loop to loop heat pump.<o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_Toc382906226"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></span></p>
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