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NC-2009 EAp2: Minimum Energy Performance

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Pressure Drop Adjustment for Lab Buildings

April 6, 2011

John Nott

Mr.
Griffith Engineering Inc.

LEEDuser Basic Member

2 thumbs up

April 6, 2011

I am trying to Calculate the required Pressure Drop adjustment for a lab facility, using Addenda "p" from ASHREA 90.1-2007. The credit for "Fully ducted return and/or exhaust air systems is rasied to 2.15 in. w.c. for lab facilities. Does this number already include required filtration in the exhaust, and exhaust airflow control devices, or are those separatly added on to that 2.15 number?

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Marcus Sheffer

LEED Fellow
7group / Energy Opportunities

LEEDuser Expert

5912 thumbs up

April 28, 2011 - 1:26 pm

No it does not already include the other components. They are added separately according to our interpretation of Table 6.5.3.1.1B.

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