Mass Transfer
The temperature of water cooled in cooling tower is always __________ temperature of entering air.

More than the wet bulb
Equal to the dry bulb
Less than the wet bulb
Equal to the wet bulb

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Mass Transfer
For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because

Solubility of the components of air in water is very small
Lewis number is close to unity
They are always equal under all circumstances
Water has a high latent heat of evaporation

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Mass Transfer
Flash distillation is

Most useful for handling binary systems
Same as simple distillation
Same as differential distillation
Used for multicomponent systems like crude refining

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