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Not sure how much this would be of help but the following link
provides comparison of EnergyPlus results with analytical results
and also comparison with the results of other simulation tools. <br>
<br>
<a
href="http://apps1.eere.energy.gov/buildings/energyplus/energyplus_testing.cfm">http://apps1.eere.energy.gov/buildings/energyplus/energyplus_testing.cfm</a><br>
<br>
Don't know much about it but it may give you some idea about what
the energy simulation results are with different simulation engines
and also as compare to analytical results.<br>
<br>
Regards,<br>
<br>
Chandan<br>
<br>
On 2/16/2011 7:14 AM, David Eldridge wrote:
<blockquote
cite="mid:34028966-C10D-4B97-8D35-D605162236E9@grummanbutkus.com"
type="cite">
<div>If you haven't done this already, I would suggest comparing
the other annual end-uses for the models as well.</div>
<div><br>
</div>
<div>If cooling is the only one varying then you have some
questions about specific inputs. (equip efficiency,
infiltration, etc.)</div>
<div><br>
</div>
<div>However, if all of the end-uses are varying between the two
models then you'll have a wider group of inputs to consider.
(internal gains, occupancy, envelope construction, etc., plus
those above.)</div>
<div><br>
-DSE
<div><br>
</div>
<div>Sent from my iPhone</div>
</div>
<div><br>
On Feb 16, 2011, at 5:07 AM, Chris Yates <<a
moz-do-not-send="true"
href="mailto:chris.malcolm.yates@gmail.com">chris.malcolm.yates@gmail.com</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div> Vaibhav <br>
<br>
Sorry to nit pick... don't you mean kWh/sq.m/year?<br>
<br>
It's difficult to say what you're discrepancy comes from
without having the models.<br>
All I can recommend is reviewing both model's results at
successively deeper levels detail. You've already covered the
first level of detail - the cooling consumption doesn't match.
<br>
Your next courses of action may be: <br>
<ol>
<li>Review monthly consumption<br>
</li>
<li>I haven't used equest but assume you can review <b>hourly
</b>air temps and loads, so compare these next.</li>
<li>Solar gain</li>
</ol>
Are your figures based on zone demand or plant? You've got
quite a few layers to compare.<br>
<br>
Cheers<br>
<br>
Chris<br>
<br>
On 16/02/2011 06:49, Vaibhav Jain wrote:
<blockquote
cite="mid:AANLkTi=RbRm7SfhSBVd7OQus3Q5xZc+BZumitnW3VT2D@mail.gmail.com"
type="cite">Hello,
<div><br>
We are trying to compare cooling energy consumption of a
typical office building model in EnergyPlus and eQUEST.
Simulation model is a simple 5 zone model with PTAC
system. Climate is New Delhi. Heating consumption is near
zero in both the models. We tried our best to closely
match models in these two software. The result says,
cooling electricity consumption/sq.m./year is about- 35
KW/sq.m./year (in Energyplus) and 100 KW/sq.m./year (in
Equest). Some of the guidelines says that cooling
consumption should be around 100-120KW/sq.m./year. Is this
correct? Does any one has come across this phenomenon.<br>
<br>
Why EnergyPlus is giving very less consumption as compared
to Equest or references?</div>
<div><br>
</div>
<div>Thanks & regards,</div>
<div>Vaibhav Jain</div>
<div><br>
</div>
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<pre class="moz-signature" cols="72">--
Chandan Sharma
Assistant Engineer
Florida Solar Energy Center
University of Central Florida
1679 Clearlake Road
Cocoa, FL 32922-5703
Phone : (321) 633-2205
Fax : (321) 638-1439
e-mail: <a class="moz-txt-link-freetext" href="mailto:csharma@fsec.ucf.edu">mailto:csharma@fsec.ucf.edu</a>
Visit our web site at: <a class="moz-txt-link-freetext" href="http://www.fsec.ucf.edu">http://www.fsec.ucf.edu</a></pre>
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