[TRNSYS-users] How I should control this evaporative cooler to set nominal cooling capacity?

[Amirreza Heidary via TRNSYS-users]

I have simulated a direct evaporative cooler using EES code and type66. my
EES code determines cooling capacity by this equation:
Q=M*Cp*(Tinletair-Toutletair). I like to have a constant cooling capacity,
so I should set the air mass flow rate to achieve that. as the temperature
difference changes during the time, I should use a variable speed fan and I
should control the air mass flow rate such I achieve desired cooling
capacity. (M=Q/ (Cp*(Tinletair-Toutletair) ). I do not know about
controllers working principles, so would you be so king to explain me how I
should apply appropriate control strategy to achieve this nominal cooling
capacity?
Thank you
[image: Inline image 1]

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*amirrezaheidary*
*master student of energy systems Engineering*
*Sharif university of technology*
*Tehran-Iran*
*E-mail address*:

heidari at energy.sharif.edu

a <sm_mousavi at pwut.ac.ir>mirrezaheidarysbu at gmail.com

*P* *Save a tree... Please don't print this E-mail unless you really need
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