Infiltration (ACH50) [1/h] value of 20 under Air flow settings/air change rate

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srinivass
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Joined: Tue Aug 02, 2022 11:37 pm -1100

Infiltration (ACH50) [1/h] value of 20 under Air flow settings/air change rate

Post by srinivass »

Hello,

I am trying to model a leaky apartment located in India with WUFI Plus. I have been given a value of 20 for ACH50 obtained from the blower door test. WUFI Plus shows that a value between 0.3 and 10 needs to be entered in the Infiltration box under Settings - Air change rate for Air flow. I can enter 20 in the box and assign flow parameters to components but then WUFI Plus says that the calculated flow coefficients for all the external walls are not correct. The incorrect flow coefficients are all >1. Is it not possible to model leaky buildings with ACH50 >10 in WUFI Plus? Please can you help?

Thank you.
Shanti
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