An analysis of processes with variation of the volume of a binary two-phase expeller

A technique, formulas, and specific results of calculation of an equilibrium composition and properties of a binary two-phase system are presented. Computational data are compared to available experimental results. The possibility to use computational relations under moderately nonisothermal conditions even with possible localization of a two-phase region is shown. The formulation of a complex nonstationary problem of heat conduction for the regions with a moving boundary is considered due to a substantial effect of the character of temperature distribution on the properties of the system; an analytical solution of the problem is presented in a specially selected form with an accuracy up to initially indeterminate coefficients for the determination of which a reducible linear algebraic system is obtained.