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

jacob goodman jacobgoodman22 at gmail.com
Tue Oct 8 07:17:47 PDT 2013


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 P*SZ*-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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