A small, opaque, diffuse object at T s = 400 K is suspended in a large furnace
Question:
A small, opaque, diffuse object at Ts = 400 K is suspended in a large furnace whose interior walls are at Tf = 2000 K. The walls are diffuse and gray and have an emissivity of 0.20. The spectral, hemispherical emissivity for the surface of the small object is given below.
(a) Determine the total emissivity and absorptivity of the surface.
(b) Evaluate the reflected radiant flux and the net radiative flux to the surface.
(c) What is the spectral emissive power at λ = 2 μm?
(d) What is the wavelength λ½ for which one-half of the total radiation emitted by the surface is in the spectral region λ > λ½?
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a The total emissivity of the surface can be calculated as the total ratio of the radiant energy emi...View the full answer
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Related Book For 
Fundamentals of Heat and Mass Transfer
ISBN: 978-0471457282
6th Edition
Authors: Incropera, Dewitt, Bergman, Lavine
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