<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"><DIV>I am sure EnergyPlus is a fine and well thought out program (consider the sources and fine people involved). However, since I am in production mode (and don't have time to create a model in two different programs-who pays for THAT), I chose to migrate to eQuest after DOE-2.1 A, B, C, D, and E. There are plenty of resources to ask questions of, the program started out in Windows (didn't need "add ons"), and gives me a 3-D rendering on the building immediately.</DIV>
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<DIV>I dealt with 20 years of "raw" DOE-2, where I didn't know what my building really looked like (until Joe Huang came along with BDL Draw..). So I would need at age (you guess..) to not relearn an entirely new program and stick with what I had learned over the past 25+ years.</DIV>
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<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> deepika khowal <deepika.khowal@gmail.com><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Paul Diglio <paul.diglio@sbcglobal.net><BR><B><SPAN style="FONT-WEIGHT: bold">Cc:</SPAN></B> equest-users@lists.onebuilding.org; energyplus_support <EnergyPlus_Support@yahoogroups.com><BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Thu, April 28, 2011 8:56:34 AM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [Equest-users] equest and energy plus outputs<BR></FONT><BR>As Joe and others mentioned, its really difficult to create all parameters same in both softwares.
<DIV>I am still working on it .</DIV>
<DIV>For ex, which system should I use in equest as equivalent to unitary system in E+?</DIV>
<DIV>I understand its difficult to match every input and hence, getting same results is very tricky.</DIV>
<DIV>Thanks all for their inputs</DIV>
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<DIV class=gmail_quote>On Thu, Apr 28, 2011 at 4:54 AM, Paul Diglio <SPAN dir=ltr><<A href="mailto:paul.diglio@sbcglobal.net" rel=nofollow target=_blank ymailto="mailto:paul.diglio@sbcglobal.net">paul.diglio@sbcglobal.net</A>></SPAN> wrote:<BR>
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<DIV style="FONT-FAMILY: times new roman, new york, times, serif; FONT-SIZE: 10pt">I thought E+ is a free program? I would be interested to hear from anyone who has used Google SketchUp and the Open Studio Plug-in to generate a 3D view in E+.<BR><BR>I would like to hear more about the discrepancies between eQuest and E+ from those who use both programs.<BR><BR>Paul Diglio<BR>
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<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Pasha Korber-Gonzalez <<A href="mailto:pasha.pkconsulting@gmail.com" rel=nofollow target=_blank ymailto="mailto:pasha.pkconsulting@gmail.com">pasha.pkconsulting@gmail.com</A>><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> deepika khowal <<A href="mailto:deepika.khowal@gmail.com" rel=nofollow target=_blank ymailto="mailto:deepika.khowal@gmail.com">deepika.khowal@gmail.com</A>><BR><B><SPAN style="FONT-WEIGHT: bold">Cc:</SPAN></B> energyplus_support <<A href="mailto:EnergyPlus_Support@yahoogroups.com" rel=nofollow target=_blank ymailto="mailto:EnergyPlus_Support@yahoogroups.com">EnergyPlus_Support@yahoogroups.com</A>>; <A href="mailto:equest-users@lists.onebuilding.org" rel=nofollow target=_blank ymailto="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</A><BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Thu, April 28, 2011 1:27:44 AM<BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [Equest-users] equest and energy plus outputs<BR></FONT>
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<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>
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<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>
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<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>
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<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>
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<DIV>Korber Energy Consultants</DIV>
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<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" rel=nofollow target=_blank ymailto="mailto:deepika.khowal@gmail.com">deepika.khowal@gmail.com</A>></SPAN> wrote:<BR>
<BLOCKQUOTE style="BORDER-LEFT: rgb(204,204,204) 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?
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<DIV class=gmail_quote>On Wed, Apr 27, 2011 at 6:06 PM, Joe Huang <SPAN dir=ltr><<A href="mailto:yjhuang@whiteboxtechnologies.com" rel=nofollow target=_blank ymailto="mailto:yjhuang@whiteboxtechnologies.com">yjhuang@whiteboxtechnologies.com</A>></SPAN> wrote:<BR>
<BLOCKQUOTE style="BORDER-LEFT: rgb(204,204,204) 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" rel=nofollow target=_blank ymailto="mailto:yjhuang@whiteboxtechnologies.com">yjhuang@whiteboxtechnologies.com</A><BR><A href="http://www.whiteboxtechnologies.com/" rel=nofollow target=_blank>www.whiteboxtechnologies.com</A><BR>(o) <A rel=nofollow>(925)388-0265</A><BR>(c) <A rel=nofollow>(510)928-2683</A><BR>"building energy simulations at your fingertips"<BR><BR><BR><BR>deepika khowal wrote:<BR>
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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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