[Bldg-sim] Mapping DOAS in Energy Cost Budget
ssagerer at comcast.net
Tue Feb 2 14:51:13 PST 2021
Can you please provide a more detailed description of the proposed guest room fan coils? Are they water source heat pumps? Are only the DOAS served by the chiller?
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On Feb 2, 2021, at 4:41 PM, Saif A via Bldg-sim <bldg-sim at lists.onebuilding.org> wrote:
I’m working on a hotel that has an air cooled chiller, the guest rooms are conditioned by fan coil units and the outdoor air is provided via a DOAS that uses natural gas for heating. According to the energy cost budget method each system should be mapped one-to-one on figure 11.5.2. The fan coils will be mapped as system 8 (heat pump), but I am not sure how to map the dedicated outside air system, I thought to model it identical to the proposed building, but that means a chiller needs to be added to the baseline model which does not make sense to me. I thought of using only system 8 for conditioning and providing the outside air to the guest rooms, but the energy cost budget requires to model the secondary heating source identical to the proposed model so I am not sure how to separate the heating source for outside air from the space heating. Any thoughts on how to model the baseline?
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