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Re: [TRNSYS-users] Coupling airflow between zones

Matt,
 You are on the right track with the way that you are modeling the air flow coupling in the building. The trick is to figure out how much air leaks out. You can either specify it based on hand calculations of the duct and diffuser sizes or you can use the coupling between TRNSYS and CONTAM that is in the standard package. Type56 passes the zone temperature information to Type97 (CONTAM), which calculates the resulting air flow due to temperature and pressure (height differences and wind) differences between the zones, and passes it back to Type56.
Cheers,
 David

Matt Fung wrote:

TRNSYS users,

 

I am dealing with a situation where the mechanically cooled air is put into a plenum crawlspace and “leaks” into the living space via floor registers.  Ideally, I would like to put the cooling ventilation air into the plenum crawlspace zone that I have created in my TRNBuild file and use the coupling airflow feature in TRNBuild to allow the cool air to “leak” at the rated flow rate from the crawlspace zone to the living space zone.  Is this an accurate way to model the desired situation?

 

Matt Fung

Associate Engineer

7407 Tam O’Shanter Drive

Stockton, CA 95210-3370

Phone: 209.473.5000 / Fax: 209.474.0817

MFung@ConSol.ws

www.ConSol.ws

 

You can call me directly at 209.473.5002

 


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