Key words: temperature, pressure, density, concentration, phase, fluid, equation of state, compressibility factor, reduced parameters
The results of thermal and thermodynamic properties (diagrams of state) calculation
of water-aliphatic alcohol (methanol, ethanol, n-propanol) systems in liquid and vapor
phases, as well as in the state of supercritical fluid are presented. They are based on the
equation of state that represents the compressibility factor as power series of reduced
density (ω = ρ/ρcr) and temperature(t = T/Tcr)
\(Z=\frac{\rho}{RT\rho_m}=1+\sum_{i=1}^{m}\sum_{j=0}^{n_i}\frac{a_{ij}\omega^i}{\tau^j}\)
and describes the experimental р, ρ, Т, х-relations with an
average relative error 1.2%.
doi:10.1134/S1990793115080060