<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body dir="auto">
Maybe take a look at ASHRAE standard 140 results, if what the original poster is looking for is a validation of the algorithms in the program.
<div><br>
</div>
<div>There are some basic assumptions of well-mixed thermal zones and uniform construction. </div>
<div><br>
</div>
<div>Then HVAC systems will run with the proscribed sequence and work perfectly. </div>
<div><br>
</div>
<div>So in the end a model assuming everything was constructed perfectly will probably be a little optimistic, but close.</div>
<div><br>
</div>
<div>Then there are the inputs in the modelers control that the program models just fine but the issue is the modeler knowing them to a high degree of confidence.</div>
<div><br>
</div>
<div>But overall with well-known information the results have been shown to be accurate. I hope this helps - if the OP can clarify the question it may help.<br>
<br>
<div dir="ltr">DSE Mobile
<div>773.490.5038</div>
</div>
<div dir="ltr"><br>
<blockquote type="cite">On May 8, 2021, at 4:31 PM, jra_sac via Equest-users <equest-users@lists.onebuilding.org> wrote:<br>
<br>
</blockquote>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="auto">Good points, Fred. I still do not understand the fist of the question !@</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div id="composer_signature" dir="auto">
<div style="font-size:85%;color:#575757" dir="auto">Sent from my T-Mobile 4G LTE Device</div>
</div>
<div dir="auto"><br>
</div>
<div><br>
</div>
<div align="left" dir="auto" style="font-size:100%;color:#000000">
<div>-------- Original message --------</div>
<div>From: Fred Betz <fbetz@aeieng.com> </div>
<div>Date: 5/8/21 2:23 PM (GMT-08:00) </div>
<div>To: John Aulbach <jra_sac@yahoo.com>, equest-users@lists.onebuilding.org, Saroj Lamichhane <213saroj@gmail.com>
</div>
<div>Subject: RE: [Equest-users] Accuracy of eQUEST </div>
<div><br>
</div>
</div>
<div class="WordSection1">
<p class="MsoNormal">Garbage in, garbage out. </p>
<p class="MsoNormal"> </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.
</p>
<p class="MsoNormal"> </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.
</p>
<p class="MsoNormal"> </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.
</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Hope that helps. </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Fred</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"> </p>
<div>
<table style="width:6.25in;border:none;border-left:solid #FF422D 2.25pt" width="600" cellpadding="0" border="1" class="MsoNormalTable">
<tbody>
<tr>
<td style="border:none;padding:.75pt .75pt .75pt 3.75pt">
<p style="line-height:12.75pt" class="MsoNormal"><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</span></p>
<p style="line-height:12.75pt" class="MsoNormal"><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"></span></p>
</td>
</tr>
</tbody>
</table>
<p class="MsoNormal"> </p>
</div>
<p class="MsoNormal"> </p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<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</p>
</div>
</div>
<p class="MsoNormal"> </p>
<div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif">Hello:</span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif"> </span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif">Not sure about the question you are asking.</span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif"> </span></p>
</div>
<div>
<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.</span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif"> </span></p>
</div>
<div>
<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.</span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif"> </span></p>
</div>
<div>
<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.</span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif"> </span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif">John R. Aulbach, PE</span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Verdana",sans-serif"> </span></p>
</div>
</div>
<div id="yahoo_quoted_0720791677">
<div>
<div>
<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: </span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> </span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> </span></p>
</div>
<div>
<div id="yiv4468618897">
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Hello everyone,</span></p>
<div>
<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!</span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Thank you!</span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Saroj Lamichhane</span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> </span></p>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> </span></p>
</div>
</div>
</div>
</div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">_______________________________________________<br>
Equest-users mailing list<br>
<a href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><br>
To unsubscribe from this mailing list send a blank message to <a href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">
EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a></span></p>
</div>
</div>
</div>
</div>
<span>_______________________________________________</span><br>
<span>Equest-users mailing list</span><br>
<span>http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</span><br>
<span>To unsubscribe from this mailing list send a blank message to EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</span><br>
</div>
</blockquote>
</div>
</body>
</html>