Atmospheric air at 90 F and 60% relative humidity flows over a cooling coil at an inlet volumetric flow rate of 2000 ft³/min. The cooling coil temperature is 40 F. The condensed liquid is removed from the system at 60 F. The air is then electrically heated until a final state of 80 F and 40% relative humidity is reached.

A. Determine the mass flow rate (lb_m/min) of the liquid water leaving the cooling section.

B. Determine the heat-transfer rate (Btu/min) in the cooling section.

C. Determine the electrical work-transfer rate (Btu/min)