<div dir="ltr"><div>Hmmm- an energy plus model showed 50% less energy use (EUI) than eQuest? Did you use the same weather files? (i.e. convert the EPW you used in E+ to .bin and use the same weather file in eQuest?)</div>
<div> </div>
<div>If this is truly the case, this is unsettling as a simulator. Wouldn't it be safer for our clients to error on the conservative side and give the eQuest results instead of the E+ results?</div>
<div> </div>
<div>Also--if this is the case, then what is the market advantage to spending thousands of dollars on E+ software rather than use the FREE-ware eQuest program??</div>
<div> </div>
<div>I'd appreciate any commentary to help me "see the light" of this topic. And if Deepika is willing to share a visual of his energy results output, I'm super curious to see what it is showing...</div>
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<div>Good question/good info...thanks,</div>
<div>Pasha</div>
<div> </div>
<div>Korber Energy Consultants</div>
<div><br><br> </div>
<div class="gmail_quote">On Wed, Apr 27, 2011 at 7:11 PM, deepika khowal <span dir="ltr"><<a href="mailto:deepika.khowal@gmail.com">deepika.khowal@gmail.com</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">Thanks Joe
<div>Even I realized the same thing. the total energy use in Energy plus was almost 50% less than equest.</div>
<div>If this is the case, who would you know that you model is working fine?
<div class="im"><br><br>
<div class="gmail_quote">On Wed, Apr 27, 2011 at 6:06 PM, Joe Huang <span dir="ltr"><<a href="mailto:yjhuang@whiteboxtechnologies.com" target="_blank">yjhuang@whiteboxtechnologies.com</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">I was involved in a two year project 2005-2007 to convert the Calif. Energy Commission's Title-24 certification suite of building tests from DOE-2.1E to EnergyPlus. There are some areas where it's difficult to get comparable inputs due to differences or limitations in the models. The differences between the two programs varied a lot depending on the building, weather, and HVAC system. For the CEC certification suite of 160 runs, cooling results were more consistent, within 10% in most cases, with EnergyPlus almost always on the high side; for heating, the differences were much greater, sometimes with EnergyPlus being 40-60% lower than DOE-2.1E. I have a 120-page report on this comparison, but haven't bothered to put it on the Web.<br>
<br>Joe<br><br>Joe Huang<br>White Box Technologies, Inc.<br>346 Rheem Blvd., Suite 108D<br>Moraga CA 94556<br><a href="mailto:yjhuang@whiteboxtechnologies.com" target="_blank">yjhuang@whiteboxtechnologies.com</a><br><a href="http://www.whiteboxtechnologies.com/" target="_blank">www.whiteboxtechnologies.com</a><br>
(o) <a href="tel:%28925%29388-0265" target="_blank" value="+19253880265">(925)388-0265</a><br>(c) <a href="tel:%28510%29928-2683" target="_blank" value="+15109282683">(510)928-2683</a><br>"building energy simulations at your fingertips"<br>
<br><br><br>deepika khowal wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
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<div>HI All<br>I am trying to create same model in equest and energy plus to see whether i see same results and just to validate my simulation files.<br>has anyone done this before?<br>I would like to know what is the % difference in both software outputs?<br>
Thanks<br>Deepika<br></div></div>------------------------------------------------------------------------
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