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<div class="moz-cite-prefix">Thanks Jeff!<br>
<br>
Can you provide a link to your paper, or a site that sells it if
it is for sale? Please?<br>
<br>
Also, look here for some interesting thoughts on comparing
software. This has been mentioned before on this list:<br>
<a class="moz-txt-link-freetext" href="http://apps1.eere.energy.gov/buildings/tools_directory/software.cfm/ID=85/pagename=alpha_list">http://apps1.eere.energy.gov/buildings/tools_directory/software.cfm/ID=85/pagename=alpha_list</a><br>
<br>
<br>
<pre class="moz-signature" cols="72">Robert Wichert P.Eng. LEED AP BD&C
+1 916 966 9060
FAX +1 916 966 9068
===============================================
</pre>
On 5/2/2014 11:37 AM, Jeff Haberl wrote:<br>
</div>
<blockquote
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<p>Hello Simge:, </p>
<p> </p>
<p>Unfortunately, I don't think you'll ever get EP+ and eQUEST
to agree without significant effort. At best, you can get
specific aspects of the program to agree, but the overall
results can be very different unless you do extrodinary things
to the input files.</p>
<p> </p>
<p>As part of RP1468 we developed a comparison simulation of
the SAMP1E.INP file RUN3A from DOE-2.1e against eQUEST and
EP+, which we could not get to agree very well. In fact, we
could not even get eQUEST and DOE-2.1e to agree. The results
can be found in the final report for 1468. </p>
<p> </p>
<p>In addition we developed a comparison tool the "RASR" that
automatically chooses the correct variables to compare, which
was a major problem with the comparisons...what to compare
against what...not even clear between DOE-2.1e and DOE-2.2.</p>
<p> </p>
<p>Finally, the defaults all need to be "revealed" as well,
since this can be one other areas where you think you're
simulating the same thing...but don't know it because the
defaults are set to X,Y,Z and you don't see it unless you have
the program print all the defaults. In addition, you'll need
to "reset" all the performance curves in one of the other
programs to match.</p>
<p> </p>
<p>In the long run, it may be easier to solve clmate change than
it may be to get the different simulations engines to agree.</p>
<p> </p>
<p>Jeff </p>
<div>
<div style="FONT-FAMILY: Tahoma; FONT-SIZE: 13px">
<div> </div>
<div><font color="#0000ff" face="Tahoma" size="2">8=! 8=)
:=) 8=) ;=) 8=) 8=( 8=) 8=() 8=) 8=| 8=) :=')
8=) 8=?<br>
Jeff S. Haberl, Ph.D.,P.E.inactive,FASHRAE,FIBPSA,......<a
moz-do-not-send="true"
href="mailto:........jhaberl@tamu.edu">jhaberl@tamu.edu</a><br>
Professor........................................................................Office
Ph: 979-845-6507<br>
Department of
Architecture............................................Lab
Ph:979-845-6065<br>
Energy Systems
Laboratory...........................................FAX:
979-862-2457<br>
Texas A&M
University...................................................77843-3581<br>
College Station, Texas, USA,
77843..............................URL:www.esl.tamu.edu<br>
8=/ 8=) :=) 8=) ;=) 8=) 8=() 8=) :=) 8=) 8=!
8=) 8=? 8=) </font><font color="#0000ff" face="Tahoma"
size="2">8=0<br>
</font></div>
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<div style="DIRECTION: ltr" id="divRpF561290"><font
color="#000000" face="Tahoma" size="2"><b>From:</b>
<a class="moz-txt-link-abbreviated" href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>
[<a class="moz-txt-link-abbreviated" href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>] on behalf of
Simge Andolsun [<a class="moz-txt-link-abbreviated" href="mailto:simgeandolsun@gmail.com">simgeandolsun@gmail.com</a>]<br>
<b>Sent:</b> Thursday, May 01, 2014 3:35 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] Significantly Higher
Heating and Cooling Energy Consumption in EnergyPlus When
Compared to eQUEST<br>
</font><br>
</div>
<div>
<div dir="ltr">
<div>Dear eQUEST users (Particularly Dear Joe Huang),</div>
<div><br>
</div>
<div>Please find the attached eQUEST and EnergyPlus files.
They represent identical cases for comparison of the two
programs. The runs are conducted for Los Angeles. The
heating and cooling consumption of EnergyPlus file are,
however, unreasonably higher than that of EQUEST. It is
particularly strange that heating occurs in early
morning time during the summer in EnergyPlus whereas no
heating occurs in eQUEST during these hours.</div>
<div><br>
</div>
<div>We need our results not to deviate extremely from
eQUEST when we start using EnergyPlus. That is why, I am
conducting this comparative analyses for cases
representing identical conditions. I would appreciate it
very much if you could examine these files and let me
know whether there is anything I can do to make the
results of these cases in the two programs as close as
possible to each other.</div>
<div><br>
</div>
<div>Dear Joe Huang,</div>
<div><br>
</div>
<div>Please see the attached charts that show the hourly
variation of temperatures in the system nodes and hourly
energy consumption. There is definitely something weird
going on in the early morning hours when the system just
starts working. I have read your paper in the link
below. Below is a section from your paper that I have
paid particular attention to. Might I be having a
similar issue in my case? </div>
<div><a moz-do-not-send="true"
href="http://gundog.lbl.gov/dirpubs/SB06/huang.pdf"
target="_blank">http://gundog.lbl.gov/dirpubs/SB06/huang.pdf</a>.
</div>
<div>
<p align="left"><font face="Times New Roman"><font
face="Times New Roman"><i>"Heating to the cooling
setpoint</i></font></font><font face="Times New
Roman"><font face="Times New Roman">. Temperature
plots revealed that at times during the shoulder
seasons,
<em>EnergyPlus </em><font face="Times New Roman"><font
face="Times New Roman">had difficulty in
picking between the heating or cooling season
control logic. This resulted in the supply air
being heated to the cooling, rather than the
heating, setpoint during the morning hours.
This problem was corrected by improving the
setpoint manager in
<i><font face="Times New Roman"><font
face="Times New Roman">EnergyPlus</font></font></i><font
face="Times New Roman"><font face="Times New
Roman">."</font></font></font></font></font></font></p>
<font face="Times New Roman"><font face="Times New
Roman">
<p>Looking forward to hearing from you,</p>
<div>Best Regards,</div>
<div>Simge Andolsun, PhD.</div>
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