[TRNSYS-users] "Regeneration temperature did not converge" error

[David BRADLEY via TRNSYS-users]

Ahmad,

   I would suggest that you implement a Type65 to watch all of the inlet 
and outlet conditions (temperature, humidity, and flow rate) for the 
desiccant wheel pause the simulation right before the error occurs. 
There is an option in the TRNExe file menu (when the simulation is 
running) that allows you to specify a simulation time at which you want 
to simulation to pause.Looking at the inlet and outlet conditions might 
give you an idea why the device cannot come up with a regeneration 
temperature that results in the desired process stream outlet humidity 
ratio.

   Also I do not know whether you are considering pressure in your 
simulation but it is a good idea to do so. When air gets near its 
saturation point the atmospheric pressure can mean the difference 
between a condensing situation and a state in which condensation does 
not occur.

kind regards,

  David



On 03/04/2017 23:09, ahmad abbasian via TRNSYS-users wrote:
>
> Dear All
>
> Using type 683 ( desiccant wheel) I get this error at the middle of my 
> simulation :
>
> Regeneration temperature did not converge
>
> what should I do ?
>
>
> Thank you
>
>
> ..............................................................................................
> Ahmad abbasianzadeh
> Solar energy Researcher
> *Harrisburg, Pensylvania*
>
>
>
>
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> TRNSYS-users at lists.onebuilding.org
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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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