Parametric analysis of direct contact sensible heat transfer in spray columns
Abstract The present investigation deals with a theoretical analysis of direct contact sensible heat transfer between two immiscible liquids in a countercurrent spray column. The non-dimensional parameters governing the heat transfer process are identified and a study of the effects of the variation of these parameters is made. The predicted column heights and the temperature profiles of both the phases along the column compare favourably with the available experimental data.
Based on our previous article, the research method of analog thermogram method for consecutive first-order reactions has been proposed in this paper. The rate constants of the consecutive first-order reactions can be obtained from the thermogram of conduction calorimeter with this method without using any apparatus constants. ln order to test the validity of thls method, the saponifications of diethyl phthalate and diethyl succinate in aqueous ethanol solvent have been studied. The rate constants calculated with this method are in agreement with those in literatures, and therefore, the analog thermogram meth0d for consecutive first-order reactions is believed to be correct.