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What is the value of emissivity for dull stainless steel?

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

(a) 0.24

(b) 0.23

(c) 0.22

(d) 0.21

I got this question in an interview for job.

The question is from Emissivity topic in division Modes and Diffusion of Mass Transfer

1 Answer

0 votes
by (39.8k points)
Right option is (d) 0.21

For explanation: It is transparent with low emissivity coatings. It emits less thermal radiation than an ordinary window.

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