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Re: [TRNSYS-users] Psychrometrics error



Marie-esther,

 

This error is created because the conditions your cooling tower is experiencing are outside the psychrometric chart. In this case the air is supersaturated.

 

Use Type33 to correct any inconsistencies in the weather file before passing the data on to the cooling tower.

 

Type 33 is located under: Physical Phenomena/Thermodynamic Properties/Psychrometrics

 

Fred

 

 

 

Fred Betz  PhD., LEED AP
Sustainable Systems Analyst

 

AEI | AFFILIATED ENGINEERS, INC.  
5802 Research Park Blvd. | Madison, WI  53719

P: 608.236.1175 | F: 608.238.2614  
fbetz@aeieng.com  |  www.aeieng.com  

 

 

From: marie-esther guillerm [mailto:marie-esther2b@hotmail.fr]
Sent: Friday, October 22, 2010 8:08 AM
To: trnsys-users@cae.wisc.edu
Subject: [TRNSYS-users] (no subject)

 

Hi,
 I'm modelling a absorption cycle with type 107, type 51b, type 1b , type 60c and type 56a and I have a problem with the colling tower ;
actually the error message is : problem with the features of moist air the utility routine PSYCHOMETRICS, which calculates the thermodynamic properties of moist air, has been called with a wet bulb temperature above the maximum wet bulb temperature for the given pressure.
I tried to make calculations but nothing is working.

thank you very much to heping me if you can

Marie-esther