Determine the conduction heat flux through various plane layers that are subjected to boundary temperatures of T

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Determine the conduction heat flux through various plane layers that are subjected to boundary temperatures of Ts,1 = 301 K and Ts,2 = 299 K at atmospheric pressure.

(a) Case A: The plane layer is aluminum. Determine the heat flux q"for Ltot = 600 μm and Ltot = 600 nm.

(b) Case B: Conduction occurs through an air layer. Determine the heat flux q"for Ltot = 600 μm and Ltot = 600 nm.

(c) Case C: The composite wall is composed of air held between two aluminum sheets. Determine the heat flux q"for Ltot = 600 μm (with aluminum sheet thicknesses of δ = 40 μm) and Ltot  = 600 nm (with aluminum sheet thicknesses of δ = 40  nm).

(d) Case D: The composite wall is composed of 7 air layers interspersed between 8 aluminum sheets. Determine the heat flux q"for Ltot  = 600 μm (with aluminum sheet and air layer thicknesses of  δ = 40  μm) and Ltot = 600 nm (with aluminum sheet and air layer thicknesses of δ = 40 nm).

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Fundamentals Of Heat And Mass Transfer

ISBN: 9780470501979

7th Edition

Authors: Theodore L. Bergman, Adrienne S. Lavine, Frank P. Incropera, David P. DeWitt

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