Origins of 4 Pa reference pressure for infiltration...

Question-and-Answer Resource for the Building Energy Modeling Community

Get started with the Help page

asked 8 years ago

Matt Carlsson

51 ●1

updated 8 years ago

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.

add a comment

1 Answer

Sort by » oldest newest most voted

answered 8 years ago

banicu

622 ●2 ●7

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...

link

Comments

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 ( 8 years ago )

add a comment

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Training Workshops

Careers

Question Tools

Stats

Asked: 8 years ago

Seen: 240 times

Last updated: May 03 '17

Site design and logo: Copyright © 2015 Big Ladder Software LLC. All rights reserved.
The Unmet Hours and Big Ladder names and logos are trademarks of Big Ladder Software LLC.
User contributions licensed under the Creative Commons Attribution Share Alike 3.0 License.

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

1 Answer

Comments

Your Answer

Training Workshops

Careers

Question Tools

Stats

Origins of 4 Pa reference pressure for infiltration...