[Equest-users] fan coil unit heat energy

[John Aulbach]

Celia:

Are you sure there is not simulataneous heating and cooling (check your thermostat ranges)? Likewise, there may be short bursts of cooling when a internal space (protected from the outdoor elements) has instantaneous internal load.

Just some additional thoughts.

John R. Aulbach, PE, CEM
Senior Energy Engineer

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________________________________
From: "King-Scott, Celia" <Celia.King-Scott at US.KEMA.com>
To: equest-users at lists.onebuilding.org
Sent: Wed, January 20, 2010 8:40:59 AM
Subject: [Equest-users] fan coil unit heat energy


Hi, 
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 ventilation. 
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
LEED®AP
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
www.kema.com/sustainable-buildings


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