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PROBLEM 2-Emissivity A wall is at 300K and 600K. It has the following spectral emissivity in the long wavelength end of the thermal radiation spectrum: <10 μm = 0.0 10 μm to 100 μm > 100 μm 0.0 0.35 Calculate the total emissivity and emissive power at the specified temperatures. Does the total emissivity increase or decrease at the higher temperature?

engineering   Mechanical-Engineering   
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