[TRNSYS-users] Type 510 cooling tower -Fan control signal error

David BRADLEY d.bradley at tess-inc.com
Thu Apr 30 07:35:23 PDT 2015


Idris,
   The error message doesn't have to do with the fan control signal. The 
error is that the model cannot determine the energy transfer 
coefficients for the tower given the parameters that you have entered. 
For example, if you give a design outlet fluid temperature that is below 
the design wet bulb temperature then it is physically impossible for a 
tower to deliver such an outlet water temperature and the model will 
generate the error that you received. The fan control signal appears 
involved because the energy transfer coefficients are only calculated if 
the tower is actually on and running.
regards,
  David


On 4/30/2015 12:20 AM, Shofolahan, Idris Adewale wrote:
> Dear all,
>
> I'm currently working on a project using a chiller and type 510 cooling tower. The project is given error when the fan control signal is set at 1 at the input tab. What do you think is the cause of this error? Schematics and error message of the project attached.Thank you.
>
> Regards,
> Idris
>
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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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