[TRNSYS-users] Type51b Error with psychrometrics routine

[C K Lee]

Hello, SAULNIER.

Whether the flow rates are appropriate or not depends also on the values 
you set for the various parameters in the parameter tab.  You better 
check if the ones you use in the cooling tower model cohere with the 
designer's data.

Best Regards
C. K. Lee

On 2014-04-02 17:37, Saulnier Remy wrote:
> Dear Lee,
> Thank you for your answer. The errors disappear when I divide the air
> flow or the water flow by 10.
> But I have checked and my flow rates are well set and given by the
> evaporative cooler designer.
> Moreover, it is weird that the errors disappear wether I divide the
> air flow by 10 or the water flow by 10...
> Do you have any idea?
> 
> Best regards.
> 
> Salutations,
> Rémy SAULNIER
> Chargé d’affaires énergie
> Ligne directe : +33(0)4 13 10 82 24
> Mobile : +33(0)6 14 49 07 63
> 
> 1 Rue Mahatma Gandhi, Le Décisium, Bâtiment B,
> 13090 AIX-EN-PROVENCE
> www.girus.fr
> -------------------------------------------------------------
> 
> -----Message d'origine-----
> De : C K Lee [mailto:a8304506 at graduate.hku.hk]
> Envoyé : mardi 1 avril 2014 11:11
> À : TRNSYS users mailing list at the Solar Energy Lab, UW-Madison
> Objet : Re: [TRNSYS-users] Type51b Error with psychrometrics routine
> 
> Hello, SAULNIER.
> 
> I think you should check whether the water and/or air flow rates are
> set appropriately.  Try changing the flow rate of either stream to see
> if the warnings still appear.
> 
> Best Regards
> C. K. Lee
> City University of Hong Kong
> 
> 
> On 2014-04-01 16:41, Saulnier Remy wrote:
>> Dear Trnsys users,
>> 
>> I would like to model an evaporative cooling tower type51b. When the
>> inputs for dry bulb temperature and wet bulb temperature are given by
>> Type15, a lot of warnings occur whith the following message :
>> 
>> "The referenced UNIT (type51b) has called the PSYCHROMETRICS routine
>> withan enthalpy less than possible for the given humidity ratio. The
>> air was assumed to be saturated at the given humidity ratio and the
>> enthalpy was set for this condition."
>> 
>> I have tried with different meteonorm files but I can't manage to
>> avoid these warnings.
>> 
>> Do you have any idea of the source of this problem ?
>> 
>> Thanks,
>> 
>> Best regards.
>> 
>> Salutations,
>> 
>> Rémy SAULNIER
>> 
>> Chargé d'affaires énergie
>> 
>> Ligne directe : +33(0)4 13 10 82 24
>> 
>> Mobile : +33(0)6 14 49 07 63
>> 
>> 1 Rue Mahatma Gandhi, Le Décisium, Bâtiment B,
>> 13090 AIX-EN-PROVENCE
>> 
>> www.girus.fr [1]
>> 
>> -------------------------------------------------------------
>> 
>> 
>> 
>> Links:
>> ------
>> [1] http://www.girus.fr/
>> 
>> _______________________________________________
>> TRNSYS-users mailing list
>> TRNSYS-users at cae.wisc.edu
>> https://mailman.cae.wisc.edu/listinfo/trnsys-users
> 
> 
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://mailman.cae.wisc.edu/listinfo/trnsys-users