The sensible heat during humidification process decreases.

The radiation emitted by a black body is known as

The logarithmic mean temperature difference (t_m) is given by (where Δt₁ and Δt₂ are temperature differences between the hot and cold fluids at entrance and exit)

In case of liquids and gases, the heat transfer takes place according to

The process of adding moisture to the air, without change in its dry bulb temperature, is known as humidification.