Mass Transfer
Steam distillation is used to

Increase the total pressure of distillation
Reduce the number of plates
Avoid thermal decomposition of a component
Increase the efficiency of separation

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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

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

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