ABSTRACT
There are a number of convective heat transfer processes that also involve convective mass transfer. Typically, these processes involve two-phase heat transfer involving either condensation or evaporation of mixtures, one of which may be inert at the process conditions. Examples of evaporation processes include vaporization of binary fluids, air humidification, and desorption of gases from liquid mixtures. Heat/mass transfer in a cooling tower is an excellent example of air humidification. Examples of condensation processes include condensation of mixtures or condensation with noncondensible gases, air dehumidification, and absorption of vapor in a liquid film. The cooling of moist air involves both heat and mass transfer. These problems involve simultaneous heat and mass transfer. A mass transfer resistance exists, because the active component must diffuse through the possibly inert component. Enhancement techniques offer excellent possibilities for performance improvement.
