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<p class="MsoNormal">Garbage in, garbage out. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If the model inputs accurately reflect what’s is really happening, then yes it’s fairly accurate. Which is true for a lot of modeling tools.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Things like weather, schedules (occupancy, lights, equipment, etc.) can frequently be very different than reality, which can lead to a pretty wide range of results.
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If you only want to use default inputs and typical weather and compare that to a real building data, then be prepared to have a 50% difference or more from what’s measured.
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<p class="MsoNormal">Hope that helps. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Fred<o:p></o:p></p>
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<p class="MsoNormal" style="line-height:12.75pt"><b><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#282826">Fred Betz</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#282826">,
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#282826">PhD,</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#282826"> LEED® AP
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#282826">BD+C<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:12.75pt"><b><span style="font-size:8.5pt;font-family:"Verdana",sans-serif;color:#282826">Building Performance</span></b><span style="font-size:8.5pt;font-family:"Verdana",sans-serif;color:#595954"><br>
</span><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#595954">(D) 608-236-1175</span><span style="font-size:8.5pt;font-family:"Verdana",sans-serif;color:#595954"> </span><span style="font-size:8.5pt;font-family:"Verdana",sans-serif;color:#FF422D">|</span><span style="font-size:8.5pt;font-family:"Verdana",sans-serif;color:#595954"> </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#595954">(M)
608-444-4857</span><span style="font-size:8.5pt;font-family:"Verdana",sans-serif;color:#595954"> </span><span style="font-size:8.5pt;font-family:"Verdana",sans-serif;color:#FF422D">|</span><span style="font-size:8.5pt;font-family:"Verdana",sans-serif;color:#595954"> </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#595954">(O)
608-238-2616</span><span style="font-size:8.5pt;font-family:"Verdana",sans-serif;color:#595954"><br>
</span><u><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#282826"><a href="https://aeieng.com/"><span style="color:#282826">Affiliated Engineers, Inc.</span></a></span></u><span style="font-size:8.5pt;font-family:"Verdana",sans-serif;color:#595954"><br>
</span><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#595954">5802 Research Park Boulevard
</span><span style="font-size:8.5pt;font-family:"Verdana",sans-serif;color:#FF422D">|</span><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#595954"> Madison, WI 53719</span><span style="font-size:8.5pt;font-family:"Verdana",sans-serif;color:#595954"><o:p></o:p></span></p>
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<p class="MsoNormal"><b>From:</b> John Aulbach <jra_sac@yahoo.com> <br>
<b>Sent:</b> Saturday, May 8, 2021 12:30 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org; Saroj Lamichhane <213saroj@gmail.com><br>
<b>Subject:</b> Re: [Equest-users] Accuracy of eQUEST<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif">Hello:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif">Not sure about the question you are asking.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif">DOE-2 (the engine of eQuest) has been around since the late 1970s. I know the creators and researchers have done countless benchmarking simulations against existing buildings
to make the program viable. I myself have done runs against buildings with sub metering and the tracking has always been excellent.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif">Also, when I have run EEMs against a Base model, and had those modifications M&V'd later, they always seem to match.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif">So I think there should not be a worry of the accuracy of eQuest/DOE-2.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif">John R. Aulbach, PE<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 Friday, May 7, 2021, 07:58:33 PM PDT, Saroj Lamichhane via Equest-users <<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</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">Hello everyone,<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">Does anybody have information about the effective modeling capability (Accuracy) of eQUEST with respect to the building parameters? Have a nice weekend!<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">Thank you!<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">Saroj Lamichhane<o:p></o:p></span></p>
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