Moist air enters a control volume operating at steady state with a volumetric flow rate of 3500 ft3/min. The moist air enters at 120 degrees F, 1.2 atm, and 75% relative humidity. Heat transfer occurs through a surface maintained at 50 degrees F. Saturated moist air and condensate exit the control volume, each at 68 degrees F. Assuming Wcv=0, and kinetic and potential energy effects are negligible, determine (a) the mass flow rate of condensate, in lb/min. (b) the rate of heat transfer, in Btu/min. (c) the rate of entropy production, in Btu/R - min. (d) the rate of exergy destruction, in Btu/min, for T0 = 50 degrees F.