Mass Transfer
Dew point of an air-water vapor mixture

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
At constant humidity & total pressure is fixed
Decreases with decrease in pressure

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Mass Transfer
In case of a desorber (stripper), the

Temperature remains unaffected
Operating line always lies below the equilibrium curve
Operating line always lies above the equilibrium curve
Temperature always increases

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