Correlation of Mass Transfer Coefficient in Stratified Gas‐Liquid Two‐Phase Flow in a Horizontal Rectangular Duct

Abstract

AbstractLiquid‐side mass transfer coefficients were determined using a horizontal rectangular duct (3cm x 3cm and 4m length) with carbon dioxide desorbing from water and from aqueous solutions of malt syrup. Simultaneously, measurements were made of the parameters characterizing the liquid film flow such as the liquid film thickness and surface velocity. Experiments were mainly conducted within the range of stratified gas‐liquid two‐phase flow. Based on the analogy between mass and momentum transfer at the liquid film surface, the experimental data for the liquid‐side mass transfer coefficient were correlated with the liquid‐film flow velocity. In order to estimate the parameters of film flow, a correlation for the average film thickness was obtained, and the surface velocity was represented graphically as a function of the gas velocity, slip velocity and superficial liquid Reynolds number.