Results 1 to 10 of 10

Thread: Velocity in FPM

  1. #1
    Join Date
    Feb 2011
    Location
    Sacramento, CA
    Posts
    46

    Velocity in FPM

    If a unit has a backward curved fan and is supplying 2020 CFM with a total static(measured at fan) of 1.1 how do you calculate the velocity in Feet Per Minute?

  2. #2
    Join Date
    Jul 2006
    Location
    Anytown USA
    Posts
    2,044
    If you are SURE 2020 CFM is going through the duct, all you do is divide the CFM by the SQ.FT of the duct.

    An example would be 2020 cfm going through 20"x20" duct.

    20x20= 400 square inches.

    Divide 400 inches by 144 to get sq.ft.

    400/144 = 2.77 sq.ft

    2020 / 2.77 = 729 FPM.


    Hope this helped.

  3. #3
    Join Date
    Feb 2011
    Location
    Sacramento, CA
    Posts
    46
    Thanks y7turbo.

  4. #4
    Join Date
    Mar 2012
    Location
    Connecticut
    Posts
    43
    Thank you for the information.

  5. #5
    Join Date
    Jul 2006
    Location
    Anytown USA
    Posts
    2,044
    Quote Originally Posted by Samshawn View Post
    Thank you for the information.
    Get a new picture next to your screen name, that ones already taken.

  6. #6
    Join Date
    Jan 2009
    Location
    Etters PA.
    Posts
    493
    Quote Originally Posted by y7turbo View Post
    Get a new picture next to your screen name, that ones already taken.
    Lol

    Sent from my PC36100 using Tapatalk

  7. #7
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    3,393
    hahaha. thief!!

  8. #8
    Join Date
    Mar 2012
    Location
    Connecticut
    Posts
    43
    I'll will look for a new one, the problem it didn't take any of the one that I have.

  9. #9
    Join Date
    Mar 2012
    Location
    Connecticut
    Posts
    43
    I found one, Sorry y7turbo

  10. #10
    Join Date
    Jul 2006
    Location
    Anytown USA
    Posts
    2,044
    Quote Originally Posted by Samshawn View Post
    I found one, Sorry y7turbo
    No problem, thanks for changing it.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event