<div dir="ltr"><div>As I understand it--Energy+ is free-ware in it's raw form. I guess I was wrong to make an assumption that Deepika is using it without an interface. If this is not the case it might explain such a variance in results. When I model in DOE-2 raw form---it is so much harder for me to manage my data and inputs in my head and such----I was not born to be a programmer, and it gives me nightmares from struggling to pass FORTRAN so many years ago...ugh.</div>
<div> </div>
<div>Therefore, I haven't looked at E+ myself for a very long time and purchasing or putting out the cost for the user-interface programs is not as desireable as using the eQuest free-ware. or the future CANQuest free-ware (future SI version).</div>
<div> </div>
<div>BUT-- I know that E+ is supposed to have some great capabilities in which we are limited with DOE-2 (to an extent.) Has anyone else had the time and desire to compare these program engines more closely recently? Also--why is it so difficult to "match" systems in eQuest and E+....forgive my blase'-ness, but isn't a pkgd system a pkgd system...a pkgd system??? :)</div>
<div>Pasha </div>
<div><br> </div>
<div class="gmail_quote">On Thu, Apr 28, 2011 at 11:39 AM, 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">So based on my analysis, there is a difference of about 10% in results of equest and E+. I would believe that because there are certain parameters which are very difficult to match.
<div>this seems reasonable to me.
<div>
<div></div>
<div class="h5"><br><br>
<div class="gmail_quote">On Thu, Apr 28, 2011 at 9:09 AM, John Aulbach <span dir="ltr"><<a href="mailto:jra_sac@yahoo.com" target="_blank">jra_sac@yahoo.com</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
<div>
<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>
<div> </div>
<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>
<div> </div>
<div>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><a name="12f9d3273db3644d_12f9cdf9b04dbece__MailAutoSig"><span style="COLOR: #1f497d"><font face="Calibri">John R. Aulbach, PE, CEM</font></span></a></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span><span style="COLOR: #1f497d"><font face="Calibri">Senior Energy Engineer</font></span></span></p>
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</div>
<div> </div>
<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 size="2" face="Tahoma">
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<b><span style="FONT-WEIGHT: bold">From:</span></b> deepika khowal <<a href="mailto:deepika.khowal@gmail.com" target="_blank">deepika.khowal@gmail.com</a>><br><b><span style="FONT-WEIGHT: bold">To:</span></b> Paul Diglio <<a href="mailto:paul.diglio@sbcglobal.net" target="_blank">paul.diglio@sbcglobal.net</a>><br>
<b><span style="FONT-WEIGHT: bold">Cc:</span></b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a>; energyplus_support <<a href="mailto:EnergyPlus_Support@yahoogroups.com" target="_blank">EnergyPlus_Support@yahoogroups.com</a>><br>
<b><span style="FONT-WEIGHT: bold">Sent:</span></b> Thu, April 28, 2011 8:56:34 AM
<div>
<div></div>
<div><br><b><span style="FONT-WEIGHT: bold">Subject:</span></b> Re: [Equest-users] equest and energy plus outputs<br></div></div></font>
<div>
<div></div>
<div><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>
<div><br>
<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">paul.diglio@sbcglobal.net</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
<div>
<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>
<div><br></div>
<div style="FONT-FAMILY: times new roman, new york, times, serif; FONT-SIZE: 10pt"><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">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">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">EnergyPlus_Support@yahoogroups.com</a>>; <a href="mailto:equest-users@lists.onebuilding.org" rel="nofollow" target="_blank">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>
<div>
<div></div>
<div><br>
<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>
<div> </div>
<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" rel="nofollow" target="_blank">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?
<div><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" rel="nofollow" target="_blank">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">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>
<blockquote style="BORDER-LEFT: rgb(204,204,204) 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
<div>
<div></div>
<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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