How Fast Does Air Flow In The Duct
Does air move rapidly through the duct with this problem? 3
An air duct of 18 cm radius is used to refresh the air every 18 minutes in a room of 10.2 m x 5.0 m x 5.5 m. What air is passing through the channel?
Room volumes are:
V = (10.2 m) (5.0 m) (5.5 m) = 280.5 m 3
The amount of air that passes through the duct per minute:
280.5 m 3 / 18m = 15.5833 m 3 / min
The duct area should be 15.5833 m 3 / min with the velocity of air flow.
Area = Pi (r 2) = Pi (0.18m) 2 = 0.1018m 2
Speed x 0.1018 m 2 = 15.5833 m 3 / min.
Speed = (15.5833 m 3 / min) / (0.1018 m 2)
Speed = 153.0962 meters per minute, or
Speed = (153.0962m / min) / 60s / min = 2.5516m / s
How Fast Does Air Flow In The Duct
How Fast Does Air Flow In The Duct
You can ask this question multiple times and get multiple answers based on individual rounds of decimal places and pi values. Are you going to ask your time and time again? Sounds like ...
