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

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

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Mass Transfer
Which of the following psychrometric processes is followed by water vapour laden unsaturated air, when it is passed through solid or liquid adsorbent?

None of these
Heating and dehumidification at almost constant wet bulb temperature
Cooling and dehumidification
Dehumidification with dry bulb temperature remaining constant

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