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<div>Got it. One option if you need to use the chiller:</div>
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<div id="AppleMailSignature">1) install a second electricity meter for the chiller (and pump(s)?) in Rev 3 if you think the air-cooled chiller is a fair representation of the district system efficiency and you want to track it separately. (It will still be
in the BEPS, but there is a different report you can use.)</div>
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<div id="AppleMailSignature">Better choice:</div>
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<div id="AppleMailSignature">2) convert the MMBtu of cooling end use to equivalent plant electricity using an assumed average COP and convert to kWh for the district energy plant in Rev 4 in a spreadsheet as post-processing.</div>
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<div id="AppleMailSignature">This works great in case the client has questions about the COP to be used, as you don't have to re-run the model to get kWh for changing efficiency.</div>
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DSE Mobile</div>
<div><br>
On Mar 9, 2016, at 4:37 PM, Kathryn Kerns <<a href="mailto:kathryn.kerns@bceengineers.com">kathryn.kerns@bceengineers.com</a>> wrote:<br>
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<p class="MsoNormal"><span style="color:#1F497D">David, I begin to see your point. Took me a while to get what you were driving at. I may have to reconsider what type of meter I need to use to represent the plant. I think I am looking for some kind of plant
electric meter, not CHW meter. Something to represent the plant electric power used to generate the plant chilled water required.<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">Thanks for the discussion.<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:12.0pt;font-family:"Arial",sans-serif;color:black">Kathryn Kerns</span></b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#1F497D">Systems Specialist</span></b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;font-variant:small-caps;color:teal">BCE</span></b><b><span style="font-size:10.0pt;font-family:"Times New Roman",serif;font-variant:small-caps;color:teal">
</span></b><b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;font-variant:small-caps;color:teal">Engineers, Inc.<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Times New Roman",serif;color:black">| Ph: 253.922.0446 | Fx: 253.922.0896 |</span></b><span style="font-size:7.0pt;font-family:"Times New Roman",serif;color:black">
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> David Eldridge [<a href="mailto:DEldridge@grummanbutkus.com">mailto:DEldridge@grummanbutkus.com</a>]
<br>
<b>Sent:</b> Wednesday, March 09, 2016 12:11 PM<br>
<b>To:</b> Kathryn Kerns <<a href="mailto:kathryn.kerns@bceengineers.com">kathryn.kerns@bceengineers.com</a>>; Bishop, Bill <<a href="mailto:bbishop@pathfinder-ea.com">bbishop@pathfinder-ea.com</a>><br>
<b>Cc:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> RE: [Equest-users] CHW Meter using more cooling energy than a Chiller<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">It is working exactly as you describe – if you setup a report for building cooling load, the two trend files will be identical in Rev 3 and Rev 4.<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">The same thing would happen if you had district heating energy, in that scenario the purchased heating would be less by the amount of the efficiency of the boiler. Even though both models use the same amount
of heat, the amount of fuel input to a boiler would be different. <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">In your case the building cooling loads are the same, the same amount of ton-hours of cooling are being consumed. The site energy in Rev 3 is lower due to how the chiller consumes less (but more expensive) electricity
and then provides thermal cooling output like a heat pump.<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">Think of it this way, if you drew the boundary around the building excluding the chiller plant in Rev3 and purchased the output of the chiller as opposed to the electrical input, it would be identical to the
results you are getting from Rev4 with the purchased chilled water meter alone.<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">It sounds like Rev 4 is exactly what you want, and is working correctly since the Rev 4 thermal cooling BTUs were 2.7 times the electrical input of the Rev 3 chiller BTUs, which was exactly the expected ratio
based on EIR = 0.37 = 1/COP.<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">David<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;color:black"> </span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="color:#244061">Grumman/Butkus Associates</span></b><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><u><span style="color:black">
</span></u><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> </span><span style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Kathryn Kerns [<a href="mailto:kathryn.kerns@bceengineers.com">mailto:kathryn.kerns@bceengineers.com</a>]
<br>
<b>Sent:</b> Wednesday, March 09, 2016 1:36 PM<br>
<b>To:</b> David Eldridge <<a href="mailto:DEldridge@grummanbutkus.com">DEldridge@grummanbutkus.com</a>>; Bishop, Bill <<a href="mailto:bbishop@pathfinder-ea.com">bbishop@pathfinder-ea.com</a>><br>
<b>Cc:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> RE: [Equest-users] CHW Meter using more cooling energy than a Chiller<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">David, what if the Rev4 plant is delivering chilled water via a chiller that exactly matches the chiller detailed in Rev3? The amount of cooling energy for each energy model should be the same.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">This is what I am trying to accomplish with the addition of CM1. I just don’t want the chiller to be included in the energy model. Maybe eQuest can’t do this?<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:12.0pt;font-family:"Arial",sans-serif;color:black">Kathryn Kerns</span></b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#1F497D">Systems Specialist</span></b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;font-variant:small-caps;color:teal">BCE</span></b><b><span style="font-size:10.0pt;font-family:"Times New Roman",serif;font-variant:small-caps;color:teal">
</span></b><b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;font-variant:small-caps;color:teal">Engineers, Inc.<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Times New Roman",serif;color:black">| Ph: 253.922.0446 | Fx: 253.922.0896 |</span></b><span style="font-size:7.0pt;font-family:"Times New Roman",serif;color:black">
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> David Eldridge [<a href="mailto:DEldridge@grummanbutkus.com">mailto:DEldridge@grummanbutkus.com</a>]
<br>
<b>Sent:</b> Wednesday, March 09, 2016 11:00 AM<br>
<b>To:</b> Kathryn Kerns <<a href="mailto:kathryn.kerns@bceengineers.com">kathryn.kerns@bceengineers.com</a>>; Bishop, Bill <<a href="mailto:bbishop@pathfinder-ea.com">bbishop@pathfinder-ea.com</a>><br>
<b>Subject:</b> RE: [Equest-users] CHW Meter using more cooling energy than a Chiller<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">We might need some background on what you are using this for. I wouldn’t normally be making those conversions in eQUEST. The site energy
<i><u>should</u></i> be different in these two cases, I’m not getting why it has to be corrected to a different value?<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">Alternately you can use a different (non-BEPS) report or trend the coil loads in the reporting section in order to show that CHW consumption by the building is the same, without modifying the meter.<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">David<o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><u><span style="color:black">
</span></u><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:black"> </span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="color:#244061">Grumman/Butkus Associates</span></b><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><u><span style="color:black">
</span></u><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> </span><span style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> Kathryn Kerns [<a href="mailto:kathryn.kerns@bceengineers.com">mailto:kathryn.kerns@bceengineers.com</a>]
<br>
<b>Sent:</b> Wednesday, March 09, 2016 12:53 PM<br>
<b>To:</b> Bishop, Bill <<a href="mailto:bbishop@pathfinder-ea.com">bbishop@pathfinder-ea.com</a>>; David Eldridge <<a href="mailto:DEldridge@grummanbutkus.com">DEldridge@grummanbutkus.com</a>>;
<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> RE: [Equest-users] CHW Meter using more cooling energy than a Chiller<o:p></o:p></p>
</div>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">So, how do I change the CM1 site energy so that the supplied cooling energy consumption is roughly equivalent to a plant chiller with a COP of 0.3704 providing 44 F water? The chilled water plant is an air
cooled electric hermetic reciprocating chiller with a COP of 0.3704 providing 44 F water.<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">Pump energy is about the same for Rev3 and Rev4 energy models, so that part makes sense.<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:12.0pt;font-family:"Arial",sans-serif;color:black">Kathryn Kerns</span></b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#1F497D">Systems Specialist</span></b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;font-variant:small-caps;color:teal">BCE</span></b><b><span style="font-size:10.0pt;font-family:"Times New Roman",serif;font-variant:small-caps;color:teal">
</span></b><b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;font-variant:small-caps;color:teal">Engineers, Inc.<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Times New Roman",serif;color:black">| Ph: 253.922.0446 | Fx: 253.922.0896 |</span></b><span style="font-size:7.0pt;font-family:"Times New Roman",serif;color:black">
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> Bishop, Bill [<a href="mailto:bbishop@pathfinder-ea.com">mailto:bbishop@pathfinder-ea.com</a>]
<br>
<b>Sent:</b> Wednesday, March 09, 2016 10:38 AM<br>
<b>To:</b> Kathryn Kerns <<a href="mailto:kathryn.kerns@bceengineers.com">kathryn.kerns@bceengineers.com</a>>; David Eldridge <<a href="mailto:DEldridge@grummanbutkus.com">DEldridge@grummanbutkus.com</a>>;
<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> RE: [Equest-users] CHW Meter using more cooling energy than a Chiller<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Kathryn,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Changing the CHW-meter SOURCE-SITE-EFF will change the total source energy reported on BEPS but not the site energy.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">~Bill<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium",sans-serif;color:black">William Bishop, PE, BEMP, BEAP, CEM, LEED AP
</span></b><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium",sans-serif;color:#006600">|</span></b><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium",sans-serif;color:black"> Pathfinder Engineers & Architects LLP<o:p></o:p></span></b></p>
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<p class="MsoNormal" style="line-height:105%"><b><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:black">Senior Energy Engineer<o:p></o:p></span></b></p>
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<p class="MsoNormal" style="line-height:105%"><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:#1F497D">134 South Fitzhugh Street</span><span style="font-size:9.0pt;line-height:105%;color:#1F497D">
</span><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:#1F497D">Rochester, NY 14608<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">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Kathryn Kerns<br>
<b>Sent:</b> Wednesday, March 09, 2016 1:28 PM<br>
<b>To:</b> David Eldridge <<a href="mailto:DEldridge@grummanbutkus.com">DEldridge@grummanbutkus.com</a>>;
<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> Re: [Equest-users] CHW Meter using more cooling energy than a Chiller<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">David, I changed the Source-to-Site variable from 1.5 (default value) to 0.1 and to 2.9 (limits of the variable listed default range). The variable changes did not change the amount of cooling usage shown in
BEPS Rev4.<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:12.0pt;font-family:"Arial",sans-serif;color:black">Kathryn Kerns</span></b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#1F497D">Systems Specialist</span></b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D"><o:p></o:p></span></p>
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</span></b><b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;font-variant:small-caps;color:teal">Engineers, Inc.<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Times New Roman",serif;color:black">| Ph: 253.922.0446 | Fx: 253.922.0896 |</span></b><span style="font-size:7.0pt;font-family:"Times New Roman",serif;color:black">
<o:p></o:p></span></p>
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<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"> David Eldridge [<a href="mailto:DEldridge@grummanbutkus.com">mailto:DEldridge@grummanbutkus.com</a>]
<br>
<b>Sent:</b> Wednesday, March 09, 2016 10:24 AM<br>
<b>To:</b> Kathryn Kerns; <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> RE: CHW Meter using more cooling energy than a Chiller<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">When a project has an on-site chiller, electricity is purchased to run the vapor compression cycle with some COP for the equipment, I didn’t open your file yet but let’s assume that it is approximately 4.0 for
the chiller. Let’s also assume pumping is the same in either case and not included in the COP.
<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">Given your example consumption levels below, the COP may be 2.7, but that makes my math more difficult
</span><span style="font-family:Wingdings;color:#1F497D">J</span><span style="color:#1F497D"> COP is cooling provided divided by power consumed, whereas the eQUEST parameter is EIR defined as power consumed divided by cooling provided. (Check if your default
chiller EIR = 0.37)<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">That version of the model with on-site chillers will then purchase site energy in the form of electricity equal to cooling demands divided by 4.0. The electricity might cost $20/MMBtu to $40/MMBtu depending on
your utility, and with a COP of 4.0 the cost to produce chilled water will be $5/MMBtu to $10/MMBtu.<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">If you prefer kW/ton, that COP is approximately 0.88 kW/ton, and if electricity costs $0.10/kWh, the cost to produce chilled water is $0.088/ton-hour.<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">The version of your model that purchases CHW through a meter buys BTUs “equal” to the cooling demands. So site energy in BTUs will be much higher by the factor of the COP.
<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">The cost from the utility will also be different though, but should be comparable to the cost to produce CHW above, except that the district energy system probably recovers capital costs, their other overhead
expenses, etc. so that the cost will likely be more than $10/MMBtu. (But the client avoids construction and operation costs related to an on-site CHW plant…that’s a separate trade-off.)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Using the example $10/MMBtu is equivalent to $0.12/ton-hour for comparison, to verify the concept in terms of order of magnitude.<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">David<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"><u><span style="color:black">
</span></u><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:black"> </span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="color:#244061">Grumman/Butkus Associates</span></b><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><u><span style="color:black">
</span></u><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> </span><span style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="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">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Kathryn Kerns<br>
<b>Sent:</b> Wednesday, March 09, 2016 12:00 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] CHW Meter using more cooling energy than a Chiller<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Everyone, I have an energy model that original had its cooling needs served by an electric hermetic air cooled chiller. All the chiller default values were used. That particular model is Base Rev3 (see attached files). I then replaced the
chiller with a chilled water meter CM1. Once again, all the CHW meter default values were used. That particular model is Base Rev4 (see attached files). The amount of cooling the building used increased from 155 MMbtu/yr, Base Rev3, to 425 MMbtu/yr, Base Rev4.
This makes no sense to me since the amount of cooling the Rev3 and Rev4 energy models required was exactly the same. I would expect the cooling energy COSTS to be different, but not the cooling energy USAGE. Anyone else having this problem and does anyone
know how to fix it?<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"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Kathryn Kerns</span></b><span style="font-size:12.0pt;font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif">Systems Specialist</span></b><span style="font-size:12.0pt;font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;font-variant:small-caps;color:teal">BCE</span></b><b><span style="font-size:10.0pt;font-family:"Times New Roman",serif;font-variant:small-caps;color:teal">
</span></b><b><span style="font-size:12.0pt;font-family:"Times New Roman",serif;font-variant:small-caps;color:teal">Engineers, Inc.<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Times New Roman",serif;color:black">| Ph: 253.922.0446 | Fx: 253.922.0896 |</span></b><span style="font-size:7.0pt;font-family:"Times New Roman",serif;color:black">
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Arial",sans-serif;color:black"> <o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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