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Air (at atmospheric pressure) at a dry bulb temperature of 40degree C and wet bulb temperature
of 20degreeC is humidified with liquid water spray. The difference between the wet bulb and dry
bulb temperature (Twb-T) at the exit is 25% of thet at the inlet. The dry bulb temperature at the
exit is closest to (in Celsius) (A) 10 (B) 20 (C) 25 (D) 30 (E) 35
Solution
Twb-T=25/100*(20-40)=-5
T=Twb+5=25 (c)

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Air (at atmospheric pressure) at a dry bulb temperature of 40degree C.pdf

  • 1. Air (at atmospheric pressure) at a dry bulb temperature of 40degree C and wet bulb temperature of 20degreeC is humidified with liquid water spray. The difference between the wet bulb and dry bulb temperature (Twb-T) at the exit is 25% of thet at the inlet. The dry bulb temperature at the exit is closest to (in Celsius) (A) 10 (B) 20 (C) 25 (D) 30 (E) 35 Solution Twb-T=25/100*(20-40)=-5 T=Twb+5=25 (c)