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In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

A. Range is 15°F

B. Approach is 10°F

C. Both (A) & (B)

D. Neither (A) nor (B)

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Correct Answer : C.


Temperature range (T1 - T2) = 15°F
Temperature approach (T2 - tw) = 10°F
Wet-bulb temperature tw = 70°F

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