An object of irregular shape has a characteristic length of L = 1 m and is maintained at a uniform surface temperature of T, = 375 K. When placed in atmospheric air at a temperature of T = 300 K and moving with a velocity of V = 100 m/s, the average heat flux from the surface to the air is 20,000 W/m². If a second object of the same shape, but with a characteristic length of L = 5 m, is maintained at a surface temperature of T, = 375 K and is placed in atmospheric air at T = 300 K, what will the value of the average convection coefficient be if the air velocity is V = 20 m/s?

An object of irregular shape has a characteristic length of L = 1 m and is maintained at a uniform surface temperature of T, = 375 K. When placed in atmospheric air at a temperature of T = 300 K and moving with a velocity of V = 100 m/s, the average heat flux from the surface to the air is 20,000 W/m². If a second object of the same shape, but with a characteristic length of L = 5 m, is maintained at a surface temperature of T, = 375 K and is placed in atmospheric air at T = 300 K, what will the value of the average convection coefficient be if the air velocity is V = 20 m/s?

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.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.40P

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