[Equest-users] Basline fan power (again...)

[Bishop, Bill]

Jacob,

You need to modify your bhp equation. You don't just add the 0.5" - you calculate "A" per the equation on Table 6.5.3.1.1A.

Regards,
Bill

William Bishop, PE, BEMP, BEAP, LEED AP | Pathfinder Engineers & Architects LLP
Senior Energy Engineer

134 South Fitzhugh Street                 Rochester, NY 14608
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From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of jacob goodman
Sent: Tuesday, October 08, 2013 10:18 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Basline fan power (again...)

Dear Community,

I'm working on a baseline system fan power calculation and am getting some absurdly high baseline fan powers, but I can't see where I'm going wrong. See attached calculations.

To start, the baseline model contains one system per thermal zone since it is the PSZ-AC type these are named after the VAV terminals or thermal zone in the proposed model. Since the building and corresponding thermal zones are small the the pressure drop adjustment from the MERV 13 filter on the proposed system seems to make a huge difference in the resulting fan powers.

By inputting the kW/CFM values my baseline heating system does almost nothing. Also, I don't think putting a portion of the power in the exhaust stream would get rid of the problem completely, but that is one thing I havn't tried.

Thanks!!!!
Jacob
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