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NC-2009 EAc1:Optimize Energy Performance

Modeling Natural ventilation

I have a dormitory model where all the suites in the dorms are provided ventilation through operable windows. Ventilation air is solely meant to meet ASHRAE 62.1 requirements. Cooling and heating will be provided by passive chilled beams. In such a scenario, should ASHRAE ventilation rates be modeled in the spaces/systems for LEED? Please note that, I do not want to know if savings can be claimed for natural ventilation. I just want to know if ventilation rates need to be modeled. Many Thanks Kalyan

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

Wed, 11/28/2012 - 14:23

Model the proposed as design and the baseline with the identical ventilation rate.

Wed, 11/28/2012 - 14:26

Thanks Marcus. Do you think USGBC might raise a question if I don't model any ventilation for these spaces in both baseline and proposed buildings?
Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Wed, 11/28/2012 - 15:03

They should not raise any question as you are meeting the ventilation requirements of 62.1.

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