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Mass Transfer - Engineering

Q1:

The term "approach" in a cooling tower refers to the difference in the temperature of the

A cold water leaving the tower and the wet bulb temperature of the surrounding air.

B hot water entering the tower and the wet bulb temperature of the surrounding air.

C hot water entering and the cooled water leaving the cooling tower.

D none of these

ANS:A - cold water leaving the tower and the wet bulb temperature of the surrounding air.

The term "approach" in a cooling tower refers to the difference in the temperature of the hot water entering and the cooled water leaving the cooling tower. It indicates how effectively the cooling tower is cooling the hot water. The smaller the approach temperature, the more efficiently the cooling tower is operating. Therefore, the correct option is hot water entering and the cooled water leaving the cooling tower.