[TRNSYS-users] Infiltration & Exfiltration

[David BRADLEY]

Mohamed,

   Type56 is only taking care of the thermal energy balance of the 
model. As such it doesn't really care how much air goes out of a zone to 
the ambient. The ambient is assumed to be unaffected by the air leaving 
the building. Where the amount of exfiltration air matters is on the 
pressure balance and it is CONTAM/Type97 that deals with that part of 
the problem. So in short, there is no need to tell Type56 about the 
amount of air leaving the zone; it only cares about the amount of air 
coming in and the conditions of that air.

   kind regards,

  David


On 2/2/2023 2:19 PM, mohamed sarmouk via TRNSYS-users wrote:
> Dear users,
> I am working with trnsys and contam, modelling windows with two way 
> openings.
> Contam provides results such infilitrations (INF) and exfiltrations 
> (EXF) but TRNSYS takes into account only infiltrations.
> In order to extract air from zones, can I specify a negative 
> infiltration ? or as I intend to do is sum up the infiltration and 
> exfiltration and define it as infiltration in Type56 ?
>
> Thank you.
>
> Mohamed.
>
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> TRNSYS-users at lists.onebuilding.org
> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org

-- 
***************************
David BRADLEY
Principal
Thermal Energy System Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com
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