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<p class="MsoNormal">Hi Ahmad,<o:p></o:p></p>
<p class="MsoNormal">My guess is that you have entered the capacity incorrectly – a common mistake in eQUEST for boilers and DHW heaters. The units are million Btus/hour, written as MBtu/h, but MBtu/h is often interpreted the same as kBtu/h. (Boiler manufacturers
often list capacities in MBH by which they mean thousands of btus per hour.)<o:p></o:p></p>
<p class="MsoNormal">For example, a typical 50 gallon tank water heater with a 4.5 kW electric heating element would have a capacity of (4.5kW)*(3413Btu/h-kW)/(1000000Btu/h-Mbtu/h) = 0.015 MBtu/h<o:p></o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">~Bill<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<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<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">Senior Energy Engineer<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><i><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#002060">T: (585) 698-1956</span></i></b><b><i><span style="color:#002060">
</span></i></b><span style="color:#1F497D"> </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D">F: (585) 325-6005</span><b><span style="font-size:3.0pt;font-family:"Arial",sans-serif;color:black"><o:p></o:p></span></b></p>
<p class="MsoNormal"><a href="mailto:wbishop@pathfinder-ea.com"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:blue">bbishop@pathfinder-ea.com</span></a><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black"> </span><a href="http://www.pathfinder-ea.com/"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:blue">www.pathfinder-ea.com</span></a><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D">134 South Fitzhugh Street<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D">Rochester, NY 14608
<img border="0" width="26" height="23" style="width:.2708in;height:.2395in" id="Picture_x0020_6" src="cid:image007.png@01D7B380.1BAEB820">
</span><i><span style="font-size:7.0pt;font-family:"Verdana",sans-serif;color:#00B0F0">Ask me why Carbon Fee & Dividend may be right for you.</span></i><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Equest-users <equest-users-bounces@lists.onebuilding.org>
<b>On Behalf Of </b>Ahmad Fraij via Equest-users<br>
<b>Sent:</b> Monday, September 27, 2021 8:39 AM<br>
<b>To:</b> Brian Fountain <Brian.Fountain@sa-footprint.com><br>
<b>Cc:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] Changing DHW Schedule Does not Change the Gas Consumption<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="line-height:0%"><span style="font-size:1.0pt;color:white">Thanks Brian for your help. I checked the PS-H report and found that the DHW loop flow and the coil load is infinity as per the screen shot below. Do you think this is the
problem? what could be the r <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:black">Warning! This message was sent from outside your organization and we are unable to verify the sender.
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:1.0pt;color:white">sophospsmartbannerend
</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Thanks Brian for your help.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">I checked the PS-H report and found that the DHW loop flow and the coil load is infinity as per the screen shot below. Do you think this is the problem? what could be the
reason?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Looking forward for your advice.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Regards<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><img border="0" width="1453" height="729" style="width:15.1354in;height:7.5937in" id="Picture_x0020_1" src="cid:image001.png@01D7B37E.4EB70F30" alt="Inline image"></span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">On Monday, September 27, 2021, 09:47:17 PM GMT+10, Brian Fountain <<a href="mailto:brian.fountain@sa-footprint.com">brian.fountain@sa-footprint.com</a>> wrote:
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p> </o:p></span></p>
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<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-family:"Arial",sans-serif;color:#1F497D">I am not aware of a general issue with DHW in eQUEST with regards to the schedules so I suspect it is a project specific issue – at which point sharing the
.inp may be helpful. I have been surprised at the impact of the UA value in the DHW heater on the heater’s efficiency, but as the loads change, the natural gas input will also.</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-family:"Arial",sans-serif;color:#1F497D"> </span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-family:"Arial",sans-serif;color:#1F497D">Quick checks:</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="ydp4704dda8yiv2410073866msolistparagraph"><span style="font-family:"Arial",sans-serif;color:#1F497D">-</span><span style="font-size:7.0pt;font-family:"New",serif;color:#1F497D">
</span><span style="font-family:"Arial",sans-serif;color:#1F497D">Are the schedules linked as you expect? Daily->weekly->annual->DHW Loop Process Load</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="ydp4704dda8yiv2410073866msolistparagraph"><span style="font-family:"Arial",sans-serif;color:#1F497D">-</span><span style="font-size:7.0pt;font-family:"New",serif;color:#1F497D">
</span><span style="font-family:"Arial",sans-serif;color:#1F497D">Are the changes being masked by other gas uses? i.e. check the PS-H report in the .sim for the DHW heater – is the load and response there changing?</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="ydp4704dda8yiv2410073866msolistparagraph"><span style="font-family:"Arial",sans-serif;color:#1F497D">-</span><span style="font-size:7.0pt;font-family:"New",serif;color:#1F497D">
</span><span style="font-family:"Arial",sans-serif;color:#1F497D">Check the Process T of your DHW loop. If it is lower than the DHW loop temperature, the DHW flow is “mixed” at the tap with the incoming water temperature reducing the DHW loop flow. Perhaps
this is set much too low?</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="ydp4704dda8yiv2410073866msolistparagraph"><span style="font-family:"Arial",sans-serif;color:#1F497D"><img border="0" width="623" height="326" style="width:6.4895in;height:3.3958in" id="ydp4704dda8yiv2410073866Picture_x0020_1" src="cid:image002.png@01D7B37E.4EB70F30"></span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="ydp4704dda8yiv2410073866msolistparagraph"><span style="font-family:"Arial",sans-serif;color:#1F497D"> </span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="ydp4704dda8yiv2410073866msolistparagraph"><span style="font-family:"Arial",sans-serif;color:#1F497D"> </span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-family:"Arial",sans-serif;color:#1F497D"> </span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-family:"Arial",sans-serif;color:#1F497D">Brian</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-family:"Arial",sans-serif;color:#1F497D"> </span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="ydp4704dda8yiv2410073866msonormal"><b><span style="font-family:"Arial",sans-serif;color:#26282A">From:</span></b><span style="font-family:"Arial",sans-serif;color:#26282A"> Equest-users <<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>>
<b>On Behalf Of </b>Ahmad Fraij via Equest-users<br>
<b>Sent:</b> Monday, September 27, 2021 3:51 AM<br>
<b>To:</b> Fraij via Equest-users <<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>><br>
<b>Subject:</b> [Equest-users] Changing DHW Schedule Does not Change the Gas Consumption</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> <o:p></o:p></span></p>
<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">CAUTION: EXTERNAL SENDER
<o:p></o:p></span></p>
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<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#26282A">Hello Guys,</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#26282A"> </span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#26282A">I am changing the fraction in the Domestics Hot Water (DHW) schedules in eQUEST but the gas consumption is not changing. Does anybody encountered
something like that?</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#26282A"> </span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#26282A">I spent a lot of time trying to fix it but I could not. Your help will be highly appreciated.</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#26282A"> </span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#26282A">Thank you.</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="ydp4704dda8yiv2410073866msonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#26282A">Ahmad</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
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