Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C ?
Correct answer: A. Both heating and humidification
- A. Both heating and humidification
- B. Heating only
- C. Humidification only
- D. Evaporative cooling
Explanation
The spray water at 40°C is warmer than the incoming air at 12°C, so the air gains sensible heat while water evaporates into it. The process is therefore heating accompanied by humidification, not evaporative cooling.
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