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<p class="MsoNormal">Hi everyone!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a couple questions to pose as I’m wading into the new VRF capabilities built into the new eQuest build 3.65-7175, in doe 2.3 mode. Curious if anyone else in parallel has solved any of the following, or else would like to pile on
with additional queries:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Where in the eQuest interface can I review/edit the input for MAX-CAP/UNIT in a VRF system? I’ve seen repeated references to this between the SIM outputs and the reference help files,
and I know the default is affected by the indoor cassette type selection (VRF-TERM-TYPE)… I just can’t find the input in the airside system (PVVT), zonal inputs, or Condensing unit input windows… Probably I’m just missing it, but is it perhaps missing in
the interface?<o:p></o:p></li></ol>
<p class="MsoListParagraph" style="margin-left:1.0in"><img width="748" height="188" style="width:7.7916in;height:1.9583in" id="Picture_x0020_2" src="cid:image001.png@01D47829.1A069BE0"><o:p></o:p></p>
<ol style="margin-top:0in" start="2" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Expanding on the last question, am I correct in understanding the NUMBER-OF-UNITS input within the preceding reference article for MAX-CAP/UNIT is referring to this input under “Unit
Staging” in the Basics tab for Air-Side Systems? Seems from the article this could serve as a proxy for MAX-CAP/UNIT in effect…<o:p></o:p></li></ol>
<p class="MsoListParagraph"><img width="1141" height="677" style="width:11.8854in;height:7.052in" id="Picture_x0020_4" src="cid:image004.png@01D47842.73AE1470"><o:p></o:p></p>
<ol style="margin-top:0in" start="3" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">For determining thermal losses, is refrigerant line insulation an editable input for branch (airside system) and leader/header (condensing unit) refrigerant piping? Is that just a
constant omitted for simplicity of inputs?<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">For illustration, is there a system diagram anywhere at present in the reference manual, similar to those provided for existing SYSTEM articles? (I’m thinking this might provide an
overview of the terminology like leader vs header vs branch piping, and diagram the split between what inputs are specified at the CONDENSING-UNIT vs the airside SYSTEM)<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">I don’t have the impression that the condenser inputs for AUX-POWER are intended to cover auxiliary/secondary heat sources for when a VRF’s heating capacity needs an extra kick during
wintertime operation. I reckon electric baseboards are the natural answer for supplemental heat at the zone, but which inputs fields are most appropriate (if any) for radiators in an outdoor unit enclosure (Literature:
<a href="https://www.daikinac.com/content/assets/DOC/White-papers-/BPG-EXTAMB.pdf">
https://www.daikinac.com/content/assets/DOC/White-papers-/BPG-EXTAMB.pdf</a>)?<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Would it be possible to identify makes/models of real world equipment that the library performance curves are based upon?<o:p></o:p></li></ol>
<p class="MsoNormal" style="margin-left:.75in"><b>… Answering my own question:</b> Comments within the BDLLIB.DAT file (eQuest Data Directory
<span style="font-family:Wingdings">à</span> ../DOE23/BDLLIB.DAT), starting on line 25094, provide some sources for the VRF library performance curves.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.75in">Here is a curve commentary reference I made for myself – may as well share:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.75in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:1.0in"><u>VRF Curve</u>
<u>Comment</u><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF-FAN-EIR-FPLR $1.4 exponent for multi-speed fans
<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF-HP-Resys-ClCap-fSST&ODB $Daikin RXYMQ48MVJU, no SST dependence
<b><o:p></o:p></b></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF-HP-Resys-ClEIR-fSST&ODB $Daikin RXYMQ48MVJU, no SST dependence
<b><o:p></o:p></b></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF-HP-Resys-ClEIR-fPLR $Coefficients from Daikin for EER~11 excluding indoor fan heat
<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF-HP-Resys-Cycle-fPLR $Estimated, 1.6 minutes at 50% cycle<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF-HP-Resys-HtCap-fSCT&OWB $Daikin RXYMQ48MVJU, no SCT dependence<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF-HP-DefrostCap-fOWB $Daikin and Mitsubishi similar<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF-HP-Resys-HtEIR-fSCT&OWB $Daikin RXYMQ48MVJU, no SCT dependence
<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF-HP-Resys-HtEIR-fPLR * no comment *<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF-HP-Resys-Crankcase-fPLR $Used for both heating and cooling<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF-EP-Cap-fSDT&SST $From EnergyPlus sample input - high speed curve<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF-EP-EIR-fSDT&SST $From EnergyPlus sample input - high speed curve<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF-EP-EIR-fPLR $From EnergyPlus sample input, refitted - Ratio & DT<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF044-Cap-fSST&SDT $DanFoss VZH028-035-044
<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF044-EIR-fSST&SDT $DanFoss VZH028-035-044
<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF044-EIR-fPLR $DanFoss VZH028-035-044
<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF088-Cap-fSST&SDT $DanFoss VZH088AG
<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF088-EIR-fSST&SDT $DanFoss VZH088AG
<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF088-EIR-fPLR $DanFoss VZH088AG<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF_CL_ThermLoss_fPLR&SST $From typical piping layout for 20 ton system<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF_HT_ThermLoss_fPLR&SDT $From typical piping layout for 20 ton system<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF_COOL_DTSAT_fSST $From typical piping layout for 20 ton system<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:1.0in">VRF_HEAT_DTSAT_fSDT $From typical piping layout for 20 ton system
<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"><o:p> </o:p></p>
<p class="MsoNormal">~Nick<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#3A7A46"><img border="0" width="726" height="9" style="width:7.5625in;height:.0937in" id="Picture_x0020_1" src="cid:image002.png@01D47829.1A069BE0"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#3A7A46">Nick Caton, P.E., BEMP</span></b><span style="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="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
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</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">E </span><span style="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>
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