Thermodynamic properties of two alternative refrigerants: 1,1-dichloro-2,2,2-trifluoroethane (R123) and 1,1,1,2-tetrafluoroethane (R134a)

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Abstract

This paper describes two different sets of measurements of the properties of two proposed alternative refrigerants, 1,1,1,2-tetrafluoroethane (R134a)1 1 For the sake of brevity, these compounds will be referred to with the numbering scheme used by the refrigeration industry (Downing, 1988). and 1,1-dichloro-2,2,2-trifluoroethane (R123)1. The first are vapor-liquid equilibrium measurements made in a simple variable-volume sapphire cell. The vapor pressures and saturation liquid densities were determined for both materials, between 268 K and the critical temperature for R134a and between 303 K and 373 K for R123. The saturation vapor density was also determined for R134a from 298 K to the critical point, where the critical conditions were measured. The second set of measurements were made with a vibrating tube densimeter from the saturation pressure to 5500 kPa for R134a and to 3500 kPa for R123 in the temperature range 278 K-368 K. These data are then compared with other determinations of similar properties. © 1991.

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Morrison, G., & Ward, D. K. (1991). Thermodynamic properties of two alternative refrigerants: 1,1-dichloro-2,2,2-trifluoroethane (R123) and 1,1,1,2-tetrafluoroethane (R134a). Fluid Phase Equilibria, 62(1–2), 65–86. https://doi.org/10.1016/0378-3812(91)87006-U

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