Mass Transfer
Blowdown in a cooling tower

Increases the scale forming tendencies of water
Is undesirable
All of these
Means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities

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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
Decreases with decrease in pressure
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

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