Analyzing Cooling TowersLiquid water at 110°F and a
Chapter 12, Problem 108P(choose chapter or problem)
Liquid water at \(110^{\circ} \mathrm{F}\) and a volumetric flow rate of \(250 \mathrm{ft}^{3} / \mathrm{min}\) enters a cooling tower operating at steady state.
Cooled water exits the cooling tower at \(88^{\circ} \mathrm{F}\). Atmospheric air enters the tower at \(80^{\circ} \mathrm{F}\), 1 atm, 40% relative humidity, and saturated moist air at \(105^{\circ} \mathrm{F}\), 1 atm exits the cooling tower. Determine
(a) the mass flow rates of the dry air and the cooled water, each in lb/min.
(b) the rate of exergy destruction within the cooling tower, in Btu/s, for \(T_{0}=77^{\circ} \mathrm{F}\).
Ignore kinetic and potential energy effects.
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