Consider a thin electrical heater attached to a plate and backed by insulation. Initially, the heater and

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Consider a thin electrical heater attached to a plate and backed by insulation. Initially, the heater and plate are at the temperature of the ambient air, T. Suddenly, the power to the heater is activated, yielding a constant heat flux q: (W/m2) at the inner surface of the plate.

Plate Insulation ool x = L

(a) Sketch and label, on T coordinates, the temperature distributions: initial, steady-state and at two intermediate times.

(b) Sketch the heat flux at the outer surface q"(L, t) as a function of time.

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Fundamentals of Heat and Mass Transfer

ISBN: 978-0471457282

6th Edition

Authors: Incropera, Dewitt, Bergman, Lavine

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