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Forum discussion

NC-2009 EAp2:Minimum Energy Performance

USGBC DES Guidance - Option 1

Maya Karkour

EcoConsulting

LEEDuser Basic Member

549 thumbs up

November 26, 2014

Dear All, I just want to verify one thing regarding DES Option 1 (building stand-alone scenario): The cooling & heating are modeled as purchased energy (with identical energy rates $) in both the baseline and proposed. This means that if I want to claim savings in my proposed scenario, I can achieve this by having more energy efficient lighting and higher efficiency HVAC fans inside my building. Additionally, if my proposed building has a better insulated envelope (and perhaps lower lighting), then the total proposed HVAC demand will be lower than that of the baseline, and the HVAC energy consumption will be proportionally lower (given that there is no efficiency / COP factor in purchased energy). Is this correct?

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Francesco Passerini

engineer

LEEDuser Basic Member

65 thumbs up

Wed, 11/26/2014 - 13:36

Yes, in my opinion it is correct. I used that option and some savings were due to the fact that the proposed model was cooled and heated through radiant systems. In fact, energy transfer through water requires less energy than through air systems. Best Regards

Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Mon, 12/01/2014 - 00:06

Sounds right to me too.

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