INVESTIGATION OF HEAT EXCHANGE INTENSIFICATION IN THE EVAPORATORY APPARATUS DUE TO CHANGE OF PIPES GEOMETRY IN THE HEATING CHAMBER

Abstract

A computer simulation method is used at the study. There is considered an evaporator with a remote heating chamber installed in a citric acid production line . Such heat exchangers are used in the pharmaceutical, biotechnological, food and chemical industries, as for example for the evaporation of crystallizing solutions and in the production of concentrated mixtures.

The aim of the graphic modeling was to create two models of pipes of different geometries, which transport a solution of citric acid at the same parameters of temperature and velocity using a temperature gradient and motion vectors to demonstrate changes in the direction of steam flow in the heating chamber. The simulation was performed in the Solidworks program in the Flow Simulations and Simulations package under conditions of turbulent motion.

The obtained results  demonstrate that the finned pipe promotes turbulence of flows due to the formation of vortices, uniform and more intense heating of the pipe surface than a standard smooth pipe.