Author(s)

J. Avsec & M. Marcic

Abstract

In technical practice vapourisation and condensation processes are of vital importance. In order to design devices for this field of activity, it is necessary to be familiar with the thermodynamic properties of state in a one-phase and two-phase environment. In most cases the thermodynamic tables and diagrams and different empirical functions obtained from measurements are used. In our case, to calculate thermodynamic properties of state statistical thermodynamics is applied. According to this the mathematical model for calculation of thermodynamic properties of state in one-phase and two-phase one-component systems is treated. Analytical results and experimental data are well compared. 1 Introduction Calculation of thermodynamic properties of state for real substances is

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