[TRNSYS-users] dynamic control of flow rate

[David BRADLEY via TRNSYS-users]

Amirreza,

   Often times in situations like this you need to add internal controls 
to the piece of equipment that is being controlled. The cooling coil 
model in the TESS HVAC Library, some of the solar collectors in the TESS 
Solar library, and the detailed cooling tower model in the standard v18 
library are all examples if you want to look at some code. You'd need to 
program an internal iterative scheme into the evaporative cooler that is 
designed to find the flow rate that results in the outlet air 
temperature that you are looking for.

kind regards,

  David



On 06/12/2017 05:28, Amirreza Heidary via TRNSYS-users wrote:
> Dear All
> I have two air streams in my model, each of them passing from some 
> components like evaporatuive cooler.One of them is cold air, and the 
> other is humid. I want to condense the moisture content of one of them 
> using another but in some hours the dew point of moist air is higher 
> then the cold air temperature so the moisture could not be condensed. 
> Tthe humidity of moist air is dependent to the it's flow rate, so if I 
> could adjust the flow rate such as the moist air dew point could be 
> maintained lower than the coild air temperature at each hour, we could 
> produce significant water. Is there any way in TRNSYS to control the 
> air flow rate such as the moist air dew point maintains lower than the 
> cold air temperature?
> Thank you
>
> --------------------------------------------------------------------------------------------------------------------------------------------------
>
> *amirrezaheidary*
> /master student of energy systems Engineering/
> /Sharif university of technology/
> /Tehran-Iran/
> /E-mail address/:
>
>     heidari at energy.sharif.edu <mailto:heidari at energy.sharif.edu>
>
>     a <mailto:sm_mousavi at pwut.ac.ir>mirrezaheidarysbu at gmail.com
>     <mailto:mirrezaheidarysbu at gmail.com>
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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