Speed of sound and phase equilibria for ($C{O}_2$ + $C_3{H}_8$) mixtures

Abstract

This work presents phase envelope and speed of sound data for the (0.60 $C{O}_2$ + 0.40 $C_3{H}_8$) and (0.80 $C{O}_2$ + 0.20 $C_3{H}_8$) binary mixtures. Phase equilibria was measured using a cylindrical resonator working in the microwave band whereas an acoustic resonator was used for speed of sound measurements. The experimental results were compared with GERG-2008 equation of state, obtaining average absolute deviations by 0.24% in pressure for phase equilibria data and 0.025% for speed of sound data. Speed of sound values were used to derive perfect-gas heat capacities, acoustic virial coefficients, and second density virial coefficients. In addition, AGA8-DC92 equation of state performance was checked for the results derived from speeds of sound.

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Cited by in corpus (1)

• Speed of sound data and acoustic virial coefficients of two binary ($N_2$ + $H_2$) mixtures at temperatures between (260 and 350) K and at pressures between (0.5 and 20) MPa