motor body is 360 mm in diameter (outside) and 240 mm long. Its surface temperature should not exceed 55 °C when dissipating 340W. Longitudinal fins of 15 mm thickness and 40 mm height are proposed. The convection coefficient is 40W/m? °C. determine the number of fins required. Atmospheric temperature is 30°C. Thermal conductivity = 40 W/m°C. Hint: q = vkAhP Ob tanh (mL) , P=2L, A=Lt. %3D

motor body is 360 mm in diameter (outside) and 240 mm long. Its surface temperature should not exceed 55 °C when dissipating 340W. Longitudinal fins of 15 mm thickness and 40 mm height are proposed. The convection coefficient is 40W/m? °C. determine the number of fins required. Atmospheric temperature is 30°C. Thermal conductivity = 40 W/m°C. Hint: q = vkAhP Ob tanh (mL) , P=2L, A=Lt. %3D

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 5.22P

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