[Bldg-sim] Cooling Loads Question

Carol Gardner cmg750 at gmail.com
Wed Oct 13 00:18:48 PDT 2010


Where is the building located and what is it's use? It's not too unusual to
have cooling loads that are much higher than heating loads as all the
internal gains go against you during the cooling season but assist you
during the heating season.


On Tue, Oct 12, 2010 at 7:34 PM, Cory Estep <90estep at cardinalmail.cua.edu>wrote:

> Good Evening Everyone:
> I have a question about high cooling loads I am getting in my simulation.
> I have developed a simulation in Design Builder, using Energy+ as the
> simulation engine.  It has been developed acording to ASHRAE 90.1-2007 AppG,
> and it is for a leased space of 11,000+ SF.  Additionally, I specified
> System #4 - PSZ-HP.
> I double checked my weather file, equipment loads, and lighting loads, and
> they are within range.  However, my cooling loads are almost 4 times as high
> as my heating (Heating = 3.4 kbtu/sqft-yr & Cooling = 12.4 kbtu/sqft-yr).
> My major concern with this is that when I use CBECS as a reference the
> heating and cooling loads are almost reversed from what I am getting.
> I have read over the Design Builder Users Manual to verify that I have not
> overlooked anything, but I am at a loss...
> My simulation may be correct, however I did want to get a second opinion.
> Any information or suggestions is appreciated.
> Thanks,
> Cory Estep
> MARCH/MSSD Candidate
> The Catholic University of America
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Carol Gardner PE
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