The RI-liquid equilibrium in the ternary system n-pentadecane + n-hexadecane + n-heptadecane. Calculation of liquidus surface and thermal windows comparison with experimental data

The liquidus surface and thermal windows of the ternary system n-pentadecane + n-hexadecane + n-heptadecane were calculated from pure component data and excess Gibbs energies of binary subsystems. Calculations were made with temperature independent as well as temperature dependent excess Gibbs energies; the results were about the same. Comparison of calculated melting points of some ternary compositions with experimental values showed that the average temperature difference was within the uncertainty of the latter.