Answer to Question #316665 in Mechanical Engineering for Jhonny

Question

8. A 75% efficient cooling tower has a water entering at 45o C and wet bulb temperature of air entering at

25 oC. Find the water exit temperature of water. PLEASE EXPLAIN THE DETAILED ANSWER/SOLUTION.

ANSWER:

A. 32oC B. 30oC C. 34.34oC D. 23.44oC

Answer 1

Wet bulb temperature is the lowest temperature to which air can be cooled by the evaporation of water into the air at a constant pressure. It is therefore measured by wrapping a wet wick around the bulb of a thermometer and the measured temperature corresponds to the wet bulb temperature.