[Bldg-sim] Cooling Loads Question

[R B]

Not sure if this is the case for you (depends on which report you are
looking at) -
The CBECS would give electricity consumption for cooling and gas consumption
for heating (usually) - so if you factor in the COP of the cooling
equipment, your numbers will look more like what you are expecting. i.e if
COP is 4, the electrical consumption for cooling will be ~3 kbtu/sqft? This
will not reverse the numbers though.

--------------------------------------------------------------------------------
Rohini Brahme, Ph.D. LEED AP
Building energy analysis, tool development, and training
Dallas/Fort Worth, TX

On Wed, Oct 13, 2010 at 7:17 AM, Cory Estep <90estep at cardinalmail.cua.edu>wrote:

> Carol:
> The project is located in Washington DC/Office
> My apologies for excluding that in the initial email... It was late last
> night ; )
>
> On Wed, Oct 13, 2010 at 3:18 AM, Carol Gardner <cmg750 at gmail.com> wrote:
>
>> Corey,
>>
>> 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.
>>
>> Carol
>>
>>   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
>>
>
>
>
> --
> Cory Estep
> MARCH + MSSD Candidate
> The Catholic University of America
>
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