In a design of a tower, water is chilled from Twa = 65°F to Twb = 45°F. The inlet water is wa= 1000 lb/h. Calculate the amount of water that evaporates and the mass flow of dry air m. The inlet air is at Tb = 70°F and Hb = 0.001 lb/lb and the outlet air is Ta = 67°F and Ha = 0.014 lb/lb. Sketch the temperatures of water and air from the top of the tower to the bottom.