[Bldg-sim] How the get the "estimated load profile"?

[RobertWichert]

First off, I have no idea...

But I would start with the load profile of a building representative of 
the median or average age of the buildings on the system, even if I had 
to build the model.  Then I would apply that to the central plant, 
scaled up to the capacity of the central plant, or where you think the 
capacity factor falls.  If I was doing this in Energy Pro, which I use 
most often, I might build a "typical" model building and add it to the 
model of the proposed building (all being heated and cooled by the 
central plant), with an appropriate multiplier to use up the capacity of 
the central plant, minus the new proposed building, on a design day.  I 
would then consider leaving those "bogey buildings" in the model as I 
proceeded forward.  Perhaps (just perhaps) calling them "existing" might 
allow the software to ignore them for the LEED calculations.

You could also find out what other buildings are on the system, and 
model those.  Probably more accurate than just a "typical building".  If 
you modeled all the buildings being provided heating and cooling by the 
central plant, that would be a pretty good way to go.


But, like I said, I have no idea.


Robert Wichert P.Eng. LEED AP BD&C
+1 916 966 9060
FAX +1 916 966 9068







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On 4/15/2013 6:49 PM, Esmireta wrote:
> Dear all,
> When simulating district cooling for LEED, a virtual plant is required 
> to be added to the proposed building, according to the "Treatment of 
> District or Campus Thermal Energy in LEED V2 and LEED 2009 -- Design & 
> Construction".
> The efficiency of the virtual plant is obtained through modeling if 
> the district cooling system is new.
> The "Treatment of District or Campus Thermal Energy in LEED V2 and 
> LEED 2009 -- Design & Construction" said, "Apply measured or estimated 
> load profiles as "process loads" to reflect the estimated total loads 
> on the district energy plant".
> My question is:
> What is the estimated load? If the district cooling system provides 
> cold to any other buildings that are not in the LEED certificate 
> scope, how can I get the estimated load?
> Regards,
> Esmi
>
>
>
>
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