Your approach should work well.
p.s., Do not specify a return fan and think about how you specify infiltration, since the building’s internal pressure may offset it somewhat.
p.p.s., This is not such a “glaring deficiency” as it may first appear. You will be avoiding the operating cost associated with duct pressure drop and perhaps a return fan, too. Duct is not cheap, either, especially if installed in an existing facility where access is difficult.
One of my past jobs was for a manufacturer who routinely used no duct for (relatively open) industrial facilities that were >100,000 square feet … with great success and amazingly uniform temperatures. They did NOT use 100% outdoor air; rather the controls maintained a very slight positive building pressure, essentially countering infiltration. (Just in case you were interested J)
The Building Performance Team
James V. Dirkes II, P.E., BEMP , LEED AP
1631 Acacia Drive NW
Grand Rapids, MI 49504
616 450 8653
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of ntraughpee
Sent: Friday, October 28, 2011 4:49 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Fresh Air Issues
Hey Everybody,
So I am
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