he fan shown in Figure 6 blows air at the rate of 5700ft3/min. The fan weighs 35 lb and has its center of gravity at G. The specific weight of air is γ = 0.076lb/ft3. Assume that the upstream velocity of air is zero. Determine: (a) The force exerted by the fan on the air. (b) The pressure rise across the fan blades in psi. (c) The power required by the fan. (1 horsepower = 550 lb-ft/s)
he fan shown in Figure 6 blows air at the rate of 5700ft3/min. The fan weighs 35 lb and has its center of gravity at G. The specific weight of air is γ = 0.076lb/ft3. Assume that the upstream velocity of air is zero. Determine: (a) The force exerted by the fan on the air. (b) The pressure rise across the fan blades in psi. (c) The power required by the fan. (1 horsepower = 550 lb-ft/s)
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter1: Heat, Temperature, And Pressure
Section: Chapter Questions
Problem 17RQ: Convert 22C to Fahrenheit.
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he fan shown in Figure 6 blows air at the rate of 5700ft3/min. The fan weighs 35 lb and has its center of
gravity at G. The specific weight of air is γ = 0.076lb/ft3. Assume that the upstream velocity of air is zero. Determine:
(a) The force exerted by the fan on the air.
(b) The pressure rise across the fan blades in psi.
(c) The power required by the fan. (1 horsepower = 550 lb-ft/s)
(d) The smallest diameter d of the base so that the fan won’t tip over.
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