Consider a power transistor that dissipates 0.2 W of power in an environment at 30°C. The transistor

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Consider a power transistor that dissipates 0.2 W of power in an environment at 30°C. The transistor is 0.4 cm long and has a diameter of 0.5 cm. Assuming heat to be transferred uniformly from all surfaces, determine

(a) The amount of heat this resistor dissipates during a 24-h period, in kWh;

(b) The heat flux on the surface of the transistor, in W/m²;

(c) The surface temperature of the resistor for a combined convection and radiation heat transfer coefficient of 18 W/m²·K.

30°C Power 0.5 cm transistor 0.2 W -0.4 cm-

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Fundamentals of Thermal-Fluid Sciences

ISBN: 978-0078027680

5th edition

Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala

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Question Posted: Dec 04, 2018 06:13 AM

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Consider a power transistor that dissipates 0.2 W of power in an environment at 30°C. The transistor

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30°C Power 0.5 cm transistor 0.2 W -0.4 cm-

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Fundamentals of Thermal-Fluid Sciences

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