[Bldg-sim] How to model a New Building with an Existing District Cooling Plant

Martin Roy ing. LEED AP martin.roy at mra.qc.ca
Thu Mar 21 14:03:09 PDT 2013


There is also a guide made by the CaGBC

Martin


At 12:24 21/03/2013, Rob Hudson wrote:
>There is a guide that ASHRAE/LEED uses to model 
>the district cooling plants.  There is two 
>methods to utilize, and each have their benefits 
>and constraints.  It is mentioned where to find 
>it in the LEED manual and in the most recent EAp2 Table 1.4 downloads.
>
>Hope this helps,
>Rob
>
>On Thu, Mar 21, 2013 at 12:06 PM, amit bhansali 
><<mailto:amitbhansali7 at gmail.com>amitbhansali7 at gmail.com> wrote:
>Hi all,
>I am trying to get an idea of how to model a new 
>mixed use building (Office + retail) with a 
>existing district cooling plant  serving other 
>office buildings on the site for LEED purposes.
>Since it is a district cooling system, the 
>plant  load, efficiency , performance and 
>operation is dependent on the other existing 
>buildings on the site as well. I am not sure how 
>to separate the energy metrics in the model  for 
>the plant associated with the  new proposed building.
>
>1.Does the baseline building model also has to 
>take into consideration the existing plant in 
>simulation or the baseline will be just modeled 
>is it will be for a new building with the plant 
>type being decided by the conditioned square 
>footage of the new proposed building?
>2. When modeling the proposed building, do i 
>neglect the effects of other building on the 
>district cooling plant performance and use the 
>part load efficiency curves and load shedding 
>schedules for the plant equipments ( towers, 
>pumps, Chillers) as if they were serving only 
>the new proposed building? has anyone done a 
>model like this and how does the LEED guidelines approach this issue?
>
>The simulation community help is much appreciated.
>Please respond if you have any questions as well.
>
>
>--
>Thanks
>
>Sincerely,
>Amit Bhansali, LEED Green Associate, M.S. , EIT
>Mobile: <tel:%28%2B1%29972-207-5180>(+1)972-207-5180
>
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>
>--
>Rob Hudson
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