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Origins of 4 Pa reference pressure for infiltration...

asked 2017-05-02 16:17:45 -0600

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updated 2017-05-02 20:13:42 -0600

Does anyone know the origins or justification for the 4 Pa commonly used as a reference delta P across building enclosures, and was it intended for low-rise residential applications only? The earliest reference I can find is a couple 1980 papers by Sherman and Grimsrud, but I can't find a justification for it.

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answered 2017-05-03 00:47:03 -0600

banicu

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As I recall from my collage course: 4 Pa is the average pressure difference between indoor and outdoor (in mild wind conditions).

More information can be found in this post: https://unmethours.com/question/11481...

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That post is good, but references the same paper, which doesn't hold the answer. I'm trying to find out why 4 Pa, and was that only intended for low rise. I have a feeling that there is no reasonable reference pressure for high-rise, because, it depends....

Matt Carlsson ( 2017-05-03 05:54:39 -0600 )edit

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Asked: 2017-05-02 16:17:45 -0600

Seen: 216 times

Last updated: May 03 '17

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Origins of 4 Pa reference pressure for infiltration... edit