Determine the flow rate of water in kg/s

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Question- A water cooling tower is to be designed with a blower capacity of 75m^3/s. The moist air enters at 25 C and wet bulb temperature of 20 C. The exit air leaves at 30 C and relative humidity of 80%. Determine the flow rate of water, in kg/s, that can be cooled if the cooled water is not recycled. The water enters the tower at 40 C and leaves the tower at 25 C.

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