Engineering, 06.08.2021 16:00 rusa25

A cylinder, 6 mm in diameter, has a length of 24 mm. One end of the cylinder is open while all other surfaces have external insulation. The inside of the cylinder is diffuse and gray having an emissivity of 0.8 and a uniform temperature of 1000 K. (a) Draw a sketch and state your assumptions
(b) Determine the radiant power leaving the open end of the cylinder.
(c) Calculate the effective emissivity of the cylinde.
(d) The length of the cylinder is decreased to 6mm, what is the effective emissivity of the cylinder?
(e) If the length of the cylinder is decreased further, do you expect an increase or decrease in the effective emissivity?

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A cylinder, 6 mm in diameter, has a length of 24 mm. One end of the cylinder is open while all other...