Consider a cylindrical cavity of diameter D100 mmand depth
Chapter 13, Problem 13.84(choose chapter or problem)
Consider a cylindrical cavity of diameter D?100 mmand depth L?50 mm whose sidewall and bottom arediffuse and gray with an emissivity of 0.6 and are at auniform temperature of 1500 K. The top of the cavity isopen and exposed to surroundings that are large and at300 K.(a) Calculate the net radiation heat transfer from thecavity, treating the bottom and sidewall of the cav-ity as one surface (qA).(b) Calculate the net radiation heat transfer from thecavity, treating the bottom and sidewall of the cav-ity as two separate surfaces (qB).(c) Plot the percentage difference between qAand qBasa function of Lover the range 5 mmL100 mm.
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