An evaporative cooling tower (see Fig. P5.12) is used to cool water from 110 to \(80^{\circ} \mathrm{F}\). Water enters the tower at a rate of \(250,000 \mathrm{lbm} / \mathrm{hr}\). Dry air (no water vapor) flows into the tower at a rate of \(151,000 \mathrm{lbm} / \mathrm{hr}\). If the rate of wet airflow out of the tower is \(156,900 \mathrm{lbm} / \mathrm{hr}\), determine the rate of water evaporation in \(\mathrm{lbm} / \mathrm{hr}\) and the rate of cooled water flow in \(\mathrm{lbm} / \mathrm{hr}\).

Figure P5.12

Transcribed Image Text:

Wet air out Water in Air in Water out Air in