Unsaturated air (with dry bulb temperature and dew point being 35°C and 18°C respectively) is passed through a water spray chamber maintained at 15°C. The air will be cooled_________________?
Correct answer: C. And dehumidified with decrease in wet bulb temperature
- A. And humidified
- B. And dehumidified with increase in wet bulb temperature
- C. And dehumidified with decrease in wet bulb temperature
- D. At the same relative humidity
Explanation
Because the entering dew point is 18°C and the spray water is at 15°C, the air is cooled below its dew point and water condenses from it. Thus the air is cooled and dehumidified, with its wet-bulb temperature decreasing.
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