A diffuse surface having the following spectral
Chapter 12, Problem 12.71(choose chapter or problem)
A diffuse surface having the following spectral charac-teristics is maintained at 500 K when situated in alarge furnace enclosure whose walls are maintained at1500 K:(a) Sketch the spectral distribution of the surfaceemissive power E?and the emissive power E?,bthat the surface would have if it were a blackbody.(b) Neglecting convection effects, what is the netheat flux to the surface for the prescribedconditions?(c) Plot the net heat flux as a function of the surfacetemperature for 500T1000 K. On the samecoordinates, plot the heat flux for a diffuse, graysurface with total emissivities of 0.4 and 0.8.(d) For the prescribed spectral distribution of ??, howdo the total emissivity and absorptivity of the sur-face vary with temperature in the range 500T1000 K?
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