Question: Q 3 ) Two long, parallel 2 0 - c m - diameter cylinders are located 3 0 c m apart from each other. Both

3)

Two long, parallel

20 - c m -

diameter cylinders are located

30 c m

apart from each other. Both cylinders are black and are maintained at temperatures

425 K

and

275 K .

The surroundings can be treated as a blackbody at

300 K .

For a

1 -

-

long section of the cylinders, determine the rates of radiation heat transfer between the cylinders and between the hot cylinder and the surroundings.

Q3) Two long, parallel 20-cm-diameter cylinders are located 30cm apart from

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