Effect of Air Tightness

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Tony Smith-Grace
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Effect of Air Tightness

Post by Tony Smith-Grace » Thu Oct 31, 2013 2:17 am -1100

Could anyone tell me if heat and moisture transfer rates are affected by selecting different air tightness values

Daniel
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Re: Effect of Air Tightness

Post by Daniel » Wed Jan 15, 2014 2:55 am -1100

The surface transfer is not affected at interior and exterior surface...

The moisture in the assembly normally is slightly increased (it's handled as a moisture source) and following the diffusion transport from inside slightly reduced due to smaller gradients, and to the outside increased due to bigger gradients.

Daniel
Dr.-Ing. Daniel Zirkelbach, Deputy Head of Department Hygrothermics, IBP Holzkirchen

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