Abstract

A simplified heat and mass transfer model is used to obtain expressions for the mass transfer effectiveness and a heat transfer effectiveness for counter-flow absorbers. The effectiveness is a function of several dimensionless variables similar to those used in traditional heat exchanger design. The effectiveness is relatively insensitive to variations in the operating conditions of the absorber and depends mainly on the number of transfer units (NTU) and the capacity ratio. A log-mean-difference approach is used to extract the heat and mass transfer coefficients from experimental data on tubular absorbers.

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