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NC-2009 EAp2:Minimum Energy Performance

Baseline DCV modeling

Greetings, The following issue is somehow not clear and any support is highly appreciated. The project belongs to system 7 (LEEDv2009) and has to be modeled with one AHU system per floor. In one of the floors there is a conference room, which is modeled as DCV. In the Proposed (i.e. original project design) this room is assigned to a separate AHU serving only this room. As for the Baseline - should this room also be assigned to a separate AHU or the AHU serving for the whole floor should be entered in MEPCalc as DCV system. We've been thinking to assign this room to a System 3, but it is mentioned that it refers to public buildings. Is it possible in this case to assign this conference room to a single System 3. This approach however is explained in version 2013, which is not the version we've been registered, so any advice is more than welcome. Thanks.

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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Thu, 07/13/2017 - 15:07

You can't model a secondary baseline system unless one of the exceptions to G3.1.1 applies. How you model this depends on the capabilities of your modeling software. In some software you can apply DCV to individual zones instead of the whole system. In others you might need to create a separate system #7 modeled with the same parameters as the system #7 which serves the larger floor.

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