Mass Transfer
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

And humidified
And dehumidified with decrease in wet bulb temperature
At the same relative humidity
And dehumidified with increase in wet bulb temperature

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Mass Transfer
Dew point of an air-water vapor mixture

Decreases with decrease in pressure
At constant humidity & total pressure is fixed
Corresponding to any point on the humidity chart is obtained by projecting a line through this point parallel to the temperature axis and to the saturation curve
All of the listed here

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