[TRNSYS-users] Psychrometrics

[David BRADLEY]

Jérôme,
   What is most likely happening is that at a pressure of 1atm, your 
combination of the dry bulb temperature and the absolute humidity ratio 
are on the wrong side of the saturation line. Since that is physically 
impossible, the psychometric routine  keeps your dry bulb temperature 
and resets the absolute humidity ratio to the value it would be if the 
relative humidity were 100%.
Best,
  David


On 12/16/2010 04:21,  wrote:
> Hello,
> i'm using a psychrometrics type with dry bulb temperature and absolute 
> humidity ratio in inputs. Pressure input is set to 1 atm.
>
> I have noticed that sometimes there is a difference between the input 
> humidity ratio and the output humidity ratio. The difference ratio is 
> about 1 to 12%.
>
> Could someone explain to me why this difference happens?
>
> Thank you
>
> Jérôme DEROCHE
> Ingénieur d'études
>
> CEDRE
>
> Tel: 04 92 96 03 77
> Port: 06 25 11 21 93
> Ophira 1, 1 place Bermond
> 06560 SOPHIA-ANTIPOLIS
>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users

-- 
***************************
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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