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Thread: Velocity in FPM
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03-05-2012, 11:13 PM #1
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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?
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03-05-2012, 11:23 PM #2
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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.
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03-06-2012, 12:04 AM #3
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Thanks y7turbo.
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03-06-2012, 03:50 PM #4
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Thank you for the information.
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03-08-2012, 12:26 AM #5
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Get a new picture next to your screen name, that ones already taken.
Originally Posted by Samshawn
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03-08-2012, 07:36 AM #6
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Lol Originally Posted by y7turbo
Sent from my PC36100 using Tapatalk
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03-08-2012, 09:37 PM #7
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hahaha. thief!!
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03-12-2012, 11:36 AM #8
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I'll will look for a new one, the problem it didn't take any of the one that I have.
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03-12-2012, 11:41 AM #9
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I found one, Sorry y7turbo
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03-12-2012, 03:41 PM #10
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No problem, thanks for changing it. Originally Posted by Samshawn
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