[TRNSYS-users] Unacceptable results of cooling coil !!!

C K Lee via TRNSYS-users trnsys-users at lists.onebuilding.org
Sun May 7 18:46:54 PDT 2017


Hello, Heidary.

I have gone through your file.  I think there is some mismatch in your 
selected parameters for the cooling coil.  The fan mass flow rate is 
1500 kg/hr but you use a coil with a face size of 2 m x 25 m which is 
definitely too large.  Try a much smaller size for the coil and see if 
the problem can be solved.

Best Regards
C. K. Lee
Research Fellow
City University of Hong Kong


On 2017-05-08 02:07, Amirreza Heidary via TRNSYS-users wrote:
> Dear all
> I'm wondering about the type 52b (cooling coil) component. Attached is
> a simple simulation of it. I have used a 13 C inlet water temperature
> for coil. The air enters the coil with ambient conditions but the air
> outlet temperature is negative !
> In my main simulation I found that the air outlet temperature is lower
> than the water mean temperature !!! This caused wrong results of my
> simulation.
> Thank you
> 
> --------------------------------------------------------------------------------------------------------------------------------------------------
> 
> AMIRREZAHEIDARY
> _master student of energy systems Engineering_
> _Sharif university of technology_
> _Tehran-Iran_
> _E-mail address_:
> 
>> heidari at energy.sharif.edu
> 
>> amirrezaheidarysbu at gmail.com
> 
> P_ __SAVE A TREE... PLEASE DON'T PRINT THIS E-MAIL UNLESS YOU REALLY
> NEED TO._
> 
> 
> 
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