The effect of absorbate concentration level in hygroscopic condensation

The effect of absorbate concentration level on the transfer rates has been elucidated with reference to film hygroscopic condensation (of cold low pressure vapor on concentrated hot brine) characterized by relatively high absorbate concentration level. It is shown that, in distinction to gas absorption (infinite dilution), in the case of comparable concentrations of absorbate and absorbent, the lateral convective term is to be accounted for. The solution obtained is in form of Voltera integral equation. The resulting transfer rates are shown to depend on both the absorbate concentration level and driving force and are sifnificantly augmented compared to Higbie's theory prediction.