Life Support Systems factored in to EAp2 or EAc1?

Lance Collins

Director

Partner Energy

LEEDuser Basic Member

10 thumbs up

September 23, 2010

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Thu, 09/23/2010 - 21:15

Basically you are required to model the proposed building as it has been designed and in alignment with how you expect it to be operated. You should model the project as accurately as possible within reason, taking into account the amount of effort relative to effect. So you cannot separate out any expected energy uses, they all must be included in the model. Even non-regulated, process energy loads must be included.

Lance Collins

Director

Partner Energy

LEEDuser Basic Member

10 thumbs up

Fri, 09/24/2010 - 16:56

Marcus, thank you for your reply. To give you more details on our condition......The challenge with our project is that it isa vivarium occupancy. Our understanding is the requirement for the base model to reflect the same outdoor air intake requirements as the design model. The project is interested in operating at 10 air changer per hour within the animal space, the recognition that vivariums are often designed for 15 air changes is not applied to the LEED model. The base LEED model would reflect 10 air changes as well, resulting in a zero net energy savings. Although you can take credit for reduced airflow by controls strategies, these strategies are associated with reductions from the design outdoor air requirements. Since the animals remain within the holding rooms, no reduction based on non-occupancy can be applied. Any additional advice or input is appreciated.

Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Fri, 09/24/2010 - 17:49

Yes according to the modeling protocol the ventialtion rates should be the same. In order to claim any savings you will have to follow the exceptional calculation method. You will need to prove that the 15 ACH is standard industry practice for the application. In order to do so you should cite sources which back up your claim like an ASHRAE Handbook for example.