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Forum discussion

NC-2009 EAp2:Minimum Energy Performance

Cooling only space and system type 2

Laura Brandt

Mechanical Engineer

Luckett & Farley

LEEDuser Basic Member

4 thumbs up

August 7, 2015

I have a dormitory project which has a few cooling only spaces. Being residential and with the requirement to model cooling only spaces as if they had electric heat, this pushes the baseline to System Type 2, or PTHPs. My question is: how do you model the baseline and proposed systems with identical heating when the proposed system is not a heat pump? Any help would be much appreciated.

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Francesco Passerini

engineer

LEEDuser Basic Member

65 thumbs up

Sun, 08/09/2015 - 13:14

Hello. How is the proposed building heated?

Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Wed, 08/12/2015 - 14:09

Not sure we have enough information to provide you with an answer. What is the nature of the cooling only spaces? What type of system is cooling these spaces in the proposed? Not sure why a few cooling only spaces changes the overall baseline, or maybe it does not? Are you applying a G3.1.1 exception? There is a work around for the requirement to add heating or cooling to a space. Simply set the temperature in the space so that the system does not operate. As long as the setting is identical this is allowed. Once you know this you can usually explain to the reviewer that you know about this work around and did not want to waste your time modeling a system that does not exist in the Proposed.

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