<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt">Dear Michael,<br><br>Thanks for your reply. <br><br>I understand that the main purpose of these benchmark models is to provide consistency in modeling methods and implementation in commercial buildings. There is another report from NREL "methodology for modeling building energy performance across the commercial sector":<br><span class="f"><cite><span><a target="_blank" href="http://www.nrel.gov/docs/fy08osti/41956.pdf">http://www.nrel.gov/docs/fy08osti/41956.pdf</a></span><br></cite></span>I am not sure whether there is a direct connection between this report and these reference building models. But as said in this report,<br>"For routine or widespread use, we recommend developing smaller sets of benchmark models to represent the commercial sector." So I think it is reasonable to
compare the results of thsese reference models to actual typical energy use in different types of commercial buildings although more variations of these models need to be created to represent wide range of actual buildings. Whether they match well or not, it may give some clue how the buildings across the commercial sector perform as a whole in practise. Anyway, the results from these kind of bottom up methods are usually very hard to be consistent with each other. <br><br> Jim Terry <div><br></div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><font face="Tahoma" size="2"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> "Deru, Michael" <Michael.Deru@nrel.gov><br><b><span style="font-weight: bold;">To:</span></b> Jin Minming <jminming@yahoo.com>; "bldg-sim@lists.onebuilding.org"
<bldg-sim@lists.onebuilding.org><br><b><span style="font-weight: bold;">Sent:</span></b> Mon, 7 March, 2011 21:10:36<br><b><span style="font-weight: bold;">Subject:</span></b> RE: [Bldg-sim] Compare simulation results of benchmark models to actual typical building energy use<br></font><br><meta http-equiv="x-dns-prefetch-control" content="off"><style><!--
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--></style><div class="WordSection1"><p class="MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Jim and all,</span></p><p class="MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">The DOE reference building models were developed as standard energy simulation models that represent typical building practices. The energy models were developed to form consistent starting points for energy modeling exercises such as evaluating energy standards (they have been used for 90.1 and 189.1) and evaluating new technologies. They are not meant to represent actual energy use of any particular building; however, the results from the models could be used as another reference point for comparing energy performance if the
model is close to your building type. </span></p><p class="MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Michael</span></p><p class="MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><div><p class="MsoNormal"><span style="font-size: 10pt; font-family: "Comic Sans MS"; color: rgb(31, 73, 125);">Michael Deru, Ph.D.</span><span style="color: rgb(31, 73, 125);"></span></p><p class="MsoNormal"><span style="font-size: 10pt; font-family: "Comic Sans MS"; color: rgb(31, 73, 125);">Senior Engineer II</span><span style="color: rgb(31, 73, 125);"></span></p><p class="MsoNormal"><span style="font-size: 10pt; font-family: "Comic Sans MS"; color: rgb(31, 73, 125);">Commercial
Buildings Research Group</span><span style="color: rgb(31, 73, 125);"></span></p><p class="MsoNormal"><span style="font-size: 10pt; font-family: "Comic Sans MS"; color: rgb(31, 73, 125);">National Renewable Energy Laboratory</span><span style="color: rgb(31, 73, 125);"></span></p><p class="MsoNormal"><span style="font-size: 10pt; font-family: "Comic Sans MS"; color: rgb(31, 73, 125);">303-384-7503 (o)</span><span style="color: rgb(31, 73, 125);"></span></p></div><p class="MsoNormal"><span style="font-size: 10pt; font-family: "Comic Sans MS"; color: rgb(31, 73, 125);">303-725-3528 (c)</span><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"></span></p><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; padding: 3pt 0in 0in;"><p class="MsoNormal"><b><span style="font-size: 10pt;
font-family: "sans-serif";">From:</span></b><span style="font-size: 10pt; font-family: "sans-serif";"> bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Jin Minming<br><b>Sent:</b> Monday, March 07, 2011 1:45 PM<br><b>To:</b> bldg-sim@lists.onebuilding.org<br><b>Subject:</b> [Bldg-sim] Compare simulation results of benchmark models to actual typical building energy use</span></p></div></div><p class="MsoNormal"> </p><div><div><p class="MsoNormal">Dear All,<br><br>DOE has developed commercial building benchmark models using EnergyPlus.<br><a rel="nofollow" target="_blank" href="http://www1.eere.energy.gov/buildings/commercial_initiative/reference_buildings.html">http://www1.eere.energy.gov/buildings/commercial_initiative/reference_buildings.html</a><br>I want to know whether someone have compared simulation results of these reference building models with actual typical USA
building energy use (like from <span class="breadcrumbshd">CBECS database</span>). If so, would you please tell me where I can find these reports?<br><br>Thanks a lot,<br><br>Jim Terry </p></div></div><p class="MsoNormal"> </p></div><meta http-equiv="x-dns-prefetch-control" content="on"></div></div>
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