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arXiv · 2409.04083

Speed of sound and phase equilibria for ($CO_{2}$ + $C_{3}H_{8}$) mixtures

Daniel Lozano-Martín·Rodrigo Susial·Pedro Hernández·Teresa E. Fernández-Vicente·M. Carmen Martín·José J. Segovia
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Abstract

This work presents phase envelope and speed of sound data for the (0.60 $CO_{2}$ + 0.40 $C_{3}H_{8}$) and (0.80 $CO_{2}$ + 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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Daniel Lozano-Martín, Rodrigo Susial, Pedro Hernández, Teresa E. Fernández-Vicente, M. Carmen Martín, José J. Segovia. 2024-09-06. Speed of sound and phase equilibria for ($CO_{2}$ + $C_{3}H_{8}$) mixtures. https://doi.org/10.1016/j.jct.2021.106464

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