cooling towers

A nuclear power plant produces 1000 MW of electricity with a power cycle thermodynamic efficiency of 30%. The heat rejected is removed by cooling water that enters the condenser at 293 K and is heated to 3 13 K. The hot water flows to two identical natural-draft cooling towers, where it is recooled to 293 K, and makeup water is added as necessary. The available air is at 298 K with a wet-bulb temperature of 285 K, and it will flow at a rate 1.2 times the minimum. Specialized packing will be used for which K,,a is expected to be 1.0 kg/m3-s if the liquid mass velocity is at least 3.4 kg/m2-s and the gas mass velocity is at least 2.75 kg/m2-s. Compute the dimensions of the packed sections of the cooling towers and the makeup water requirement due to evaporation.