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NC-2009 EAp2:Minimum Energy Performance

ASHRAE 90.1 does not apply to portions of Building

A portion of our new building will be dedicated to maintenance of large vehicles (large trucks, earth movers, etc) and is priimarily industrial in nature. These areas are provided with exhaust fans, but are not conditioned (no heating, no cooling, no indirect cooling). We are excluding these portion of the building from our simulation model based on the fact that ASHRAE 90.1 does not apply to equipment and potions of building sysems that use energy primarily for industrial, manufacturing or commercial purposes (ASHRAE 90.1 section 2.3.c). My questions are: 1. Do we need to include the power for the exhaust fans serving these areas in our model as process loads? 2. Do we need to include the lighting of these areas in our model? 3. If the lighting must be included, does it need to be treated as a process load, i.e. same in Baseline and Proposed cases, or can we use ASHRAE LPD for the Baseline case and the As-Design LPD for the proposed case?

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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
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Wed, 04/25/2012 - 12:52

These areas should be included in your model. LEED has consistently applied 90.1 to building types for which the Standard was not written. Many manufacturing facilities have obtained certification. The credit language clearly requires that the model include all energy use associated with the building project, including all process loads. 1. yes 2. yes 3. Use the most appropriate ASHRAE LPD in the Baseline and the actual design in the Proposed.

Wed, 04/25/2012 - 18:45

Thanks for your response.

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