Flow resistance for standard flexible duct?
Flow resistance for standard flexible duct?
(OP)
I have this Wheel-O-Duct sizing and I need to know what the "in-H20" I should use. I am using standard 8,9,10,12,16, and 20" flexible duct sizes. Should I use .08? I know to shoot for 700 fpm velocity.
Thanks!
Thanks!





RE: Flow resistance for standard flexible duct?
At 700 FPM, correction factors (apply to new duct in.wg pd/100 ft)are:
5" dia = 2.08
8" dia= 1.95
12" dia = 1.85
20" dia = 1.78
40" dia = 1.74
At 2000 FPM,correction factor for 12" dia = 1.94.
RE: Flow resistance for standard flexible duct?
RE: Flow resistance for standard flexible duct?