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<p class="MsoNormal">Ahhh. I just saw this now. It went directly to my spam folder.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Welp. At least I’m not crazy!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I will give those two alternatives a try and see what I come up with.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks a million!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Nicholas Caton <Nicholas.Caton@se.com> <br>
<b>Sent:</b> Thursday, December 12, 2019 2:28 PM<br>
<b>To:</b> Tom Mickley <tmickley@thekcompany.com><br>
<b>Cc:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> RE: eQuest - District Steam/CW Meters<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hmm… <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">You seem to be describing a 2-pipe system in reality, with district/campus loop HX’s diverted/engaged via 3-way valve depending on whether predominant heating vs. cooling mode?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m running with this markup of a 2-pipe FC system in my mind, so that we’re on a similar wavelength:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><img width="843" height="422" style="width:8.7812in;height:4.3958in" id="Picture_x0020_11" src="cid:image001.png@01D5B198.DB41DE10"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The vol2 dictionary entry for CIRCULATION-LOOP includes the following for TYPE = WLHP:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><img width="1138" height="162" style="width:11.8541in;height:1.6875in" id="Picture_x0020_4" src="cid:image002.png@01D5B198.DB41DE10"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">That last, highlighted line suggests we <b><i><u>should</u></i></b> be able to attach a CHW and/or HW/Steam Meter… but indeed eQuest interface throws an “incompatible type” error when trying to attach these components.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">eQuest interface does provide this on right-clicking the circ-loop selection dropdown for a CHW-METER:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><img width="559" height="428" style="width:5.8229in;height:4.4583in" id="Picture_x0020_7" src="cid:image004.png@01D5B198.DB41DE10"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The loop assignment dropdown for an airside HP system helps us source the following from the reference volumes. The highlighted line seems to seal the deal in that there may not be a way to bridge these components:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><img width="867" height="153" style="width:9.0312in;height:1.5937in" id="Picture_x0020_8" src="cid:image005.png@01D5B198.DB41DE10"><o:p></o:p></p>
<p class="MsoNormal">All that’s to say – you aren’t crazy, and if you’re missing something so am I.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In lieu of a direct fix, I’ll volunteer that I was attempting to simulate DES systems for years before realizing that CHW and Steam/HW meters were a thing… which is to say there are workarounds!<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:l1 level1 lfo3">In this instance, I’d stick with a WLHP and tower/boiler as the wizards spit out a WLHP system:<o:p></o:p></li></ol>
<p class="MsoNormal" style="margin-left:1.0in"><img width="426" height="255" style="width:4.4375in;height:2.6562in" id="Picture_x0020_10" src="cid:image006.png@01D5B198.DB41DE10"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<ol style="margin-top:0in" start="2" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">… then just make the heat rejection and heating equipment “magically efficient” so that they do not contribute meaningful energies to your electric/fuel meters.<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">… then tweak the associated pump power and operating inputs for this loop to match those of the real-world 2-pipe circulation.<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">Alternative A<o:p></o:p>
<ol style="margin-top:0in" start="1" type="a">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level2 lfo3">Set up some custom reports to track Btu’s delivered/rejected (for free) on the WLHP loop<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level2 lfo3">You can then use those custom outputs in combination with your district/campus steam/CHW rates in post-processing to work out associated costs.<o:p></o:p></li></ol>
</li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">Alternative B<o:p></o:p>
<ol style="margin-top:0in" start="1" type="a">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level2 lfo3">Presuming fixed CHW/Steam rates per Btu added/removed from the WLHP loop, you could try to “flatten” the performance curves for the attached primary equipment, with the goal being
to ensure the simulated input energies (electricity/fuel) to these components will always match the Btu’s moved, 1 for 1. Some trial and error testing is implicit here (I vaguely recall writing up a guide to this effect, but it would have been many years
ago – might be worth a search).<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level2 lfo3">Then, you could use the native output reports from eQuest, with the understanding that the end use allocations for heat rejection and space heating may be mis-intepreted and will require
conversion of units likely for use against your metered steam/CHW rates.<o:p></o:p></li></ol>
</li></ol>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Neither alternative is particularly pretty/elegant, but I hope one of these workarounds will help get you over the finish line.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Perhaps with this thread on the record, we may see a future patch that unlocks loop type assignments for district meters? Failing that, the reference manual apparently appears to require at least a little editing in this area for consistency.<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"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#3A7A46"><img width="624" height="8" style="width:6.5in;height:.0833in" id="Picture_x0020_1" src="cid:image007.jpg@01D5B198.DB41DE10" alt="cid:image005.png@01D515A3.47EDD880"><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:9.0pt;font-family:"Arial",sans-serif;color:#626469"> Senior Energy Engineer<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:4.5pt"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469"> Energy and Sustainability Services</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469"> Energy Performance Contracting
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469">913 . 564 . 6361<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469">785 . 410 . 3317<o:p></o:p></span></p>
<p class="MsoNormal"><u><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469"><a href="mailto:nicholas.caton@se.com"><span style="font-family:"Calibri",sans-serif;color:#626469">nicholas.caton@se.com</span></a></span></u><span style="font-size:9.0pt;color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Equest-users <<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>>
<b>On Behalf Of </b>Tom Mickley via Equest-users<br>
<b>Sent:</b> Thursday, December 12, 2019 10:19 AM<br>
<b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] eQuest - District Steam/CW Meters<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p><span style="color:red">[External email: Use caution with links and attachments]</span><o:p></o:p></p>
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<p> <o:p></o:p></p>
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<p class="MsoNormal">Hello all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there a way to use a district chilled water meter and a steam meter w/ HX as the source for water source heat pumps? It looks like I’m only able to use those meters with HW, CW or 2-pipe loops.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there a workaround for this? <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am using 3.65 build 7173 with DOE 2.2<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks in Advance,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Tom<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><br>
______________________________________________________________________<br>
This email has been scanned by the Symantec Email Security.cloud service.<br>
______________________________________________________________________<o:p></o:p></p>
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