A drying oven consists of a long semicircular duct of diameter \(D=1.5 \mathrm{~m}\).

Materials to be dried cover the base of the oven while the wall is maintained at \(1200 \mathrm{~K}\). What is the drying rate per unit length of the oven \((\mathrm{kg} / \mathrm{s} \cdot \mathrm{m})\) if a watercoated layer of material is maintained at \(350 \mathrm{~K}\) during the drying process? Blackbody behavior may be assumed for the water surface and the oven wall.

Transcribed Image Text:

D=1.5 m T = 1200 K T = 350 K