1. A centrifugal fan is delivering 2000 cfm of air at a total pressure differential of 2 in.w. The fan has an outlet area of 0.85 ft? and requires 1.25 hp shaft input power. The fan speed is 1000 rpm. If the fan motor efficiency 85%, calculate: a) The total fan output power (hp) b) The fan total efficiency c) The fan static pressure, in.w d) The fan static efficiency
1. A centrifugal fan is delivering 2000 cfm of air at a total pressure differential of 2 in.w. The fan has an outlet area of 0.85 ft? and requires 1.25 hp shaft input power. The fan speed is 1000 rpm. If the fan motor efficiency 85%, calculate: a) The total fan output power (hp) b) The fan total efficiency c) The fan static pressure, in.w d) The fan static efficiency
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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Transcribed Image Text:d) The fan static efficiency
e) The motor power, kW
f) If the fan speed is reduced to 800 rpm, compute;
i. The capacity (cfm)
ii. The static ant total pressures, in.w.
ii. The required power (shaft power), hp
Transcribed Image Text:1. A centrifugal fan is delivering 2000 cfm of air at a total pressure differential of 2 in.w. The
fan has an outlet area of 0.85 ft? and requires 1.25 hp shaft input power. The fan speed is
1000 rpm. If the fan motor efficiency 85%, calculate:
a) The total fan output power (hp)
b) The fan total efficiency
c) The fan static pressure, in.w
d) The fan static efficiency
e) The motor power, kW
f) If the fan speed is reduced to 800 rpm, compute;
i. The capacity (cfm)
ii. The static ant total pressures, in.w.
ii. The required power (shaft power), hp
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