The variation of the spectral absorptivity of a surface is as given in Fig. P2144. Determine the

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The variation of the spectral absorptivity of a surface is as given in Fig. P21€“44. Determine the average absorptivity and reflectivity of the surface for radiation that originates from a source at T = 2500 K. Also, determine the average emissivity of this surface at 3000 K.

0.7 0.2 2, um 2.

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Fundamentals of Thermal-Fluid Sciences

ISBN: 978-0078027680

5th edition

Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala

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