The cooling water from the condenser of a power plant enters a wet cooling tower at 40oC at a rate of 90 kg/s. The water is cooled to 25oC in the cooling tower by air that enters the tower at 1 atm, 23oC, and 60 percent relative humidity and leaves saturated at 32oC. Neglecting the power input to the fan, determine
(a) The volume flow rate of air into the cooling tower and
(b) The mass flow rate of the required makeup water.