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

[Yitian Zhu]

Keith,

Thank you very much for replying this.

I've actually did some investigate into this issue and had some ideas about
possible solutions and, I thought it could because that Evaporative Cooler
runs even during heating season, but since I have the same setting of
cooling & fan schedule for DX Coil or Chilled Water Cooling, why would EVP
Cooler have this problem? And which input represents the humidity control
of EVP Cooler? I wonder which input could determine the set point between
cooling and heating season? Or, I should basically create separated seasons
for the cooling,heating & fan schedule? I guess it would be unreliable.

Thank you Again for your help!

Best,

Yitian

Energy Analyst
Efficiency 2.0

On Mon, Jan 9, 2012 at 12:47 PM, Keith Swartz <kswartz at ecw.org> wrote:

> 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.
> ****
>
> ** **
>
> ________________________________****
>
> **Keith Swartz**, P.E., LEED AP****
>
>
> Energy Engineer / Senior Project Manager
> *Energy Center of Wisconsin
> *****455 Science Drive, Suite 200, ********Madison**, **WI** **53711
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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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