Emissivity of Powder Beds

Date
1995
Authors
Sih, Samuel Sumin
Barlow, Joel W.
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Abstract

A simple model for estimating the emissivity ofthe surface of a powder bed from knowledge only ofthe bed porosity and solid emissivity is presented. Estimates by this model are compared with experimental measurements for powder beds of alumina, silicon carbide, and iron. Agreement within the uncertainty ofthe measurements, ± 10%, is obtained

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