Dry air at atmospheric pressure and 350 K, with a free stream velocity of 25 m/s,flows over a smooth, porous plate 1 m long

(a) Assuming the plate to be saturated with liquid water at 350 K, estimate the mass rate of evaporation per unit width of the plate, n'A (kg/s ∙ m).

(b) For air and liquid water temperatures of 300, 325, and 350 K, generate plots of nA as a function of velocity for the range from 1 to 25 m/s.