A horizontal fan (such as that shown in example 5.24) pulls in stagnant air (ie. basically stationary air) at atmospheric pressure; the air approaches the fan outlet with speed 44 ft/sec (ie. 30 mph) and with static pressure 0.3 psi. The air flowing through the fan can be assumed to have a constant density of 2.4*10-3 slug/ft3. The air losses due to friction are 0.1 psi (or 6000 ft-lb/slug of air passing from the fan inlet to the outlet). a) Determine the shaft work in ft-lb/slug b) If the fan outlet area is 2 ft2, determine the rate of work on the air
A horizontal fan (such as that shown in example 5.24) pulls in stagnant air (ie. basically stationary air) at atmospheric pressure; the air approaches the fan outlet with speed 44 ft/sec (ie. 30 mph) and with static pressure 0.3 psi. The air flowing through the fan can be assumed to have a constant density of 2.4*10-3 slug/ft3. The air losses due to friction are 0.1 psi (or 6000 ft-lb/slug of air passing from the fan inlet to the outlet). a) Determine the shaft work in ft-lb/slug b) If the fan outlet area is 2 ft2, determine the rate of work on the air
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A horizontal fan (such as that shown in example 5.24) pulls in stagnant air (ie. basically stationary air) at
atmospheric pressure; the air approaches the fan outlet with speed 44 ft/sec (ie. 30 mph) and with static pressure 0.3 psi. The air flowing through the fan can be assumed to have a constant density of 2.4*10-3 slug/ft3. The air losses due to friction are 0.1 psi (or 6000 ft-lb/slug of air passing from the fan inlet to the outlet).
a) Determine the shaft work in ft-lb/slug
b) If the fan outlet area is 2 ft2, determine the rate of work on the air.
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