Interfacial transfer Chilton-Colburn analogy

Equations (13-115) to (13-117) contain terms, for rates of heat transfer from the vapor phase to the hquid phase. These rates are estimated from convective and bulk-flow contributions, where the former are based on interfacial area, average-temperature driving forces, and convective heat-transfer coefficients, which are determined from the Chilton-Colburn analogy for the vapor phase and from the penetration theoiy for the liquid phase. 

The mass-transfer coefficients and interfacial area per volume a are obtained from correlations based on experimental data. Heat transfer coefficients are obtained from the Chilton-Colburn analogy, Eq. (15-50a), using the experimentally determined mass-transfer correlations. The most common correlation for interfacial area per volume a is the Zuiderweg (19S2) correlation. The correlation depends on the regime of operation of the sieve plates. In the spray regime, the correlation is... 

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