Repeat Prob. 21108 by replacing the cubic enclosure by a spherical enclosure whose diameter is 3 m.

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Repeat Prob. 21€“108 by replacing the cubic enclosure by a spherical enclosure whose diameter is 3 m.


Repeat Prob. 21€“108

A spherical tank of diameter D = 2 m that is filled with liquid nitrogen at 100 K is kept in an evacuated cubic enclosure whose sides are 3 m long. The emissivities of the spherical tank and the enclosure are ε1 = 0.1 and ε2 = 0.8, respectively. If the temperature of the cubic enclosure is measured to be 240 K, determine the net rate of radiation heat transfer to the liquid nitrogen.

Liquid N2

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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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