b) A 0.4-W cylindrical electronic component shown in Figure Q3b with diameter 0.3 cm and length 1.8 cm is mounted on a circuit board is cooled by air flowing across it at a velocity of 150 m/min and temperature is 40 °C. Take the pressure of air 1 atm and the film temperature to be 50 °C, determine the surface temperature of the component. Resistor 0.4 W D = 0.3 em Figure Q3b

b) A 0.4-W cylindrical electronic component shown in Figure Q3b with diameter 0.3 cm and length 1.8 cm is mounted on a circuit board is cooled by air flowing across it at a velocity of 150 m/min and temperature is 40 °C. Take the pressure of air 1 atm and the film temperature to be 50 °C, determine the surface temperature of the component. Resistor 0.4 W D = 0.3 em Figure Q3b

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 5.57P

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