The spectral, hemispherical absorptivity of an opaque surface is as shown. What is the solar absorptivity, ?S?

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The spectral, hemispherical absorptivity of an opaque surface is as shown. What is the solar absorptivity, ?S? If it is assumed that ?? = ?? and that the surface is at a temperature of 340 K. what is its total, hemispherical emissivity?

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Fundamentals of Heat and Mass Transfer

ISBN: 978-0471457282

6th Edition

Authors: Incropera, Dewitt, Bergman, Lavine

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Question Posted: Mar 02, 2011 12:59 AM

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The spectral, hemispherical absorptivity of an opaque surface is as shown. What is the solar absorptivity, ?S?

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1.0 az = 0.9 - az=0.1 0.3 1.5 a um)

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KNOWN Spectral hemispherical absorptivity of an opaque surface FIND a Solar absorptivity b Total hem...View the full answer

Fundamentals of Heat and Mass Transfer

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