Example: A fan of diameter 0.7 m running 1500 rpm delivers 140 m3/min of air at 15C against 75 mm of water total pressure when the total effeciency is 86%. Determine the volume of air delivered, total pressure and power consumed, if (a) the air temperature is 50C. (b) the air temperature is 50C and the fan speed is 1700 rpm. (c) the same conditions as (b) but a 0.6 m diameter, geometrically similar fan is used.

Example: A fan of diameter 0.7 m running 1500 rpm delivers 140 m3/min of air at 15C against 75 mm of water total pressure when the total effeciency is 86%. Determine the volume of air delivered, total pressure and power consumed, if (a) the air temperature is 50C. (b) the air temperature is 50C and the fan speed is 1700 rpm. (c) the same conditions as (b) but a 0.6 m diameter, geometrically similar fan is used.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.34P

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