[Bldg-sim] fan coil unit heat energy in winter

King-Scott, Celia Celia.King-Scott at US.KEMA.com
Tue Jan 19 18:02:32 PST 2010


I am modeling a chiller with 4-pipe fan coil units in each of the spaces
for a high school building. The fans are cycling on at night. There is a
Gas Boiler heating system. 
I see some space cooling happening in the winter periods during the
night when there should be very minimal internal load. The only way I
can justify this is that this is the supply fan heat energy for the fan
coil unit in the space and it comes out as cooling electrical end use
(in the BEPU AND BEPS reports) because there is no electrical heating
end use due to it being a gas system and electrical fans end use is for

Has anyone come across this before, do I seem right on my assumption? 

If anyone could help me out, it would be greatly appreciated. Thanks &

Best Regards,

Celia King-Scott
Sustainable Design Consultant

KEMA Services Inc.
3605 5th Avenue, Suite A 
San Diego, CA 92103 
Office +1 619 688 0960 x 15513
Mobile +1 619 309 7441

celia.king-scott at kema.com

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