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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

Elements Of Electromagnetics
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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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/m2 °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.
Transcribed Image Text: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/m2 °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.
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