The condensation of mixed vapors

Abstract

Abstract Although condensation from saturated mixed vapors upon a cold surface has been frequently explored experimentally, current theories describing this phenomenon have not been adequately tested. This work describes the condensation process in which two condensable components are involved and how, consequently, the mass transfer process is involved in their partial fractionation. A discussion of the Bedingfield correction ( 3 ) for the effect of molecular weight difference of the diffusing components upon the mass transfer coefficient leads to its necessary association with the Ackermann factor ( 4 , 5 ) for the general mass transfer effect. Data from two sets of experiments using different apparatuses demonstrate the use of this net corrective factor and also demonstrate the general applicability of the Drew‐Colburn mass transfer coefficient, for transfer processes in which more than one component transfers from one phase to another.