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TD Homework 3

# TD Homework 3 - water removed in kg per 1000 m 3 of dry air...

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1 HOMEWORK 3 02.05.2011 1- Air at 1 atm, 15 C, and 60 percent relative humidity is first heated to 30 C in a heating section and then passed through an evaporative cooler where its temperature drops to 25 C. Determine a) The exit relative humidity b) The amount of water added to air, in kg H 2 O / kg dry air. 2- On a summer day in New Orleans, Louisiana, the pressure is 1 atm; the temperature is 32 C; and the relative humidity is 95 percent. The air is to be conditioned to 24 C and 60 percent relative humidity. Determine the amount of cooling, in kJ, required and

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Unformatted text preview: water removed, in kg, per 1000 m 3 of dry air processed at the entrance to the system. Figure 1 2 3-A wet cooling tower is to cool 60 kg/s of water from 40 to 26 C. Atmospheric air enters the tower at 1 atm with dry and wet-bulb temperatures of 22 and 16 C, respectively, and leaves at 34 C with relative humidity of 90 percent. Using the psychometric chart determine a) The volume flow rate of air into the cooling tower. b) The mass flow rate of the required makeup water. Figure 2...
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TD Homework 3 - water removed in kg per 1000 m 3 of dry air...

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