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ISSN Online: 2377-424X

ISBN Print: 0-89116-909-1

International Heat Transfer Conference 9
August, 19-24, 1990 , Jerusalem, Israel

HEAT AND MASS TRANSFER IN THE DISTILLATION PROCESS OF BINARY POLYMER SOLUTIONS IN WIRES

Get access (open in a dialog) DOI: 10.1615/IHTC9.1610
pages 443-448

Résumé

The distillation process of polymer solutions is of practical interest in the enameling process of wires in industry. Polymer solutions seldom follow Raoult's law of phase equilibrium. It means that the partial pressure of the solvent in the solution is strongly influenced even by small molar fractions of the polymeric solute.
In this study, the influence of the real character of the solution on the distillation process in studied. This process takes place in a wire moving into an air medium at rest. The equations of motion, energy and mass transfer are reduced to ordinary differential equations by the method of Karman-Pohlhausen. In this way a boundary layer solution is computed.
It is shown that the Chilton-Colburn analogy predicts reasonably the distillation rate. It is also shown that the Clausius-Clapeyron equation is a good approximation to predict the distillation rate and the distillation length. The theoretical prediction of the distillation length is compared with experimental results.