A large combination convectionradiation oven isused to
Chapter 12, Problem 12.104(choose chapter or problem)
A large combination convectionradiation oven isused to heat-treat a small cylindrical product of dia- meter 25 mm and length 0.2 m. The oven walls are ata uniform temperature of 1000 K, and hot air at 750 Kis in cross flow over the cylinder with a velocity of5 m/s. The cylinder surface is opaque and diffuse withthe spectral emissivity shown.(a) Determine the rate of heat transfer to the cylinderwhen it is first placed in the oven at 300 K.(b) What is the steady-state temperature of thecylinder?(c) How long will it take for the cylinder to reach atemperature that is within 50C of its steady-statevalue?
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