A small, opaque, diffuse object at Ts400 K is sus-pended
Chapter 12, Problem 12.50(choose chapter or problem)
A small, opaque, diffuse object at Ts?400 K is sus-pended in a large furnace whose interior walls are atTf?2000 K. The walls are diffuse and gray and havean emissivity of 0.20. The spectral, hemisphericalemissivity for the surface of the small object is givenbelow.(a) Determine the total emissivity and absorptivity ofthe surface.(b) Evaluate the reflected radiant flux and the netradiative flux tothe surface.(c) What is the spectral emissive power at ??2?m?(d) What is the wavelength ?1/2for which one-half ofthe total radiation emitted by the surface is in thespectral region ???1/2?
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