Repeat Prob. 14–161 assuming a fan blows air over the water surface at a velocity of 3 m/s. Take the radius of the pan to be the characteristic length.

Data from problem 161

Consider a 30-cm-diameter pan filled with water at 15°C in a room at 20°C, 1 atm, and 30 percent relative humidity. Determine

(a) The rate of heat transfer by convection,

(b) The rate of evaporation of water,

(c) The rate of heat transfer to the water needed to maintain its temperature at 15°C. Disregard any radiation effects.