Mass Transfer
Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a

Higher wet bulb temperature
Higher dew point
Higher relative humidity
Higher absolute (specific) humidity

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Mass Transfer
Dew point of an air-water vapor mixture

At constant humidity & total pressure is fixed
All of the listed here
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
Decreases with decrease in pressure

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