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What is the value of emissivity for polished aluminum?

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+1 vote
in Mass Transfer by (37.1k points)
What is the value of emissivity for polished aluminum?

(a) 0.01

(b) 0.02

(c) 0.03

(d) 0.04

This question was addressed to me in class test.

My query is from Emissivity in division Modes and Diffusion of Mass Transfer

1 Answer

0 votes
by (39.8k points)
Right answer is (c) 0.03

For explanation: The emissivity of the surface of a material is its effectiveness in emitting energy as thermal radiation.

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