[TRNSYS-users] Exhaust air out in type 56

[David BRADLEY]

In general, Type56 doesn't really care what happens to the air that 
leaves the zone. (note: this is NOT the case when Type56 is coupled with 
COMIS or CONTAM). If you have an exhaust fan, you can simply use an 
external model and use the zone air temperature and RH as the inputs. 
What you do have to concern yourself with is where the replacement air 
is going to come from. In otherwords, when the exhaust fan turns on, it 
will depressurize the zone and some replacement air will come into the 
zone. Type56 assumes that the zone remains pressure neutral and does not 
do a mass balance. So it is up to you to make sure that you add an equal 
amount of air into the zone (using a VENTILATION type (as was correctly 
recommended by Baboo Gowreesunker) or a coupling airflow to an adjacent 
zone).
Kind regards,
  David


On 10/24/2011 23:03, hankiat lee wrote:
>
> hi,
>
> Does anybody know how to blow out the hot air in type 56? i link a fan 
> trying to simulate flowing out of hot air, but there is no mass flow 
> rate in the output of type 56.
>
> Thank You
>
> Lee Han Kiat
>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://mailman.cae.wisc.edu/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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