[Equest-users] why more heating usage with evaporative cooler

[Keith Swartz]

Yitian,

Is the evaporative cooler also controlling the humidity during the heating season? If so, that might explain it. More heating would be needed to compensate for the cooling effect of adding cold moisture to the airstream.

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Keith Swartz, P.E., LEED AP

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From: Yitian Zhu [mailto:yitian at efficiency20.com]
Sent: Friday, January 06, 2012 4:01 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] why more heating usage with evaporative cooler

Hi,

I'm new to eQuest, recently I'm modeling a office building with evaporative cooler, I did a sample test and found out that, for the same building, significantly more heating is consumed with the model using evaporative cooler than others using DX coil or chilled water cooler. Does anybody noticed that and, why is that?

Great thanks!

Yitian
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