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Moist air at 958F, 1 atm, and a relative humidity of 30% enters a steam-spray humidification device operating at steady state with a volumetric flow rate of 5700 ft3/min. Saturated water vapor at 2308F is sprayed into the moist air, which then exits the device at a relative humidity of 50%. Heat transfer between the device and its surroundings can be ignored, as can kinetic and potential energy effects.
Determine
(a) the temperature of the exiting moist air stream, in 8F.
(b) the rate at which steam is injected, in lb/min.
Five kg of nitrogen (N2) undergoes a process from p1 = 5 bar, T1 = 400K to p2 = 2 bar and T2 = 500K. Assuming ideal gas behavior, determine the change in entropy, in kJ/K
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Air is compressed from 14.7 psia and 60 F to a pressure of 150 psia while being cooled at a rate of 10 Btu/lbm by circulating water through the compressor casing. the volume flow rate of the air at the intel conditions is 5000 ft^3/min, and the power..
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