Bubble-point pressures and saturated- and compressed-liquid densities of the binary R-125 + R-143a system
Bubble-point pressures and saturated- and compressed-liquid densities of the binary R-125 (pentafluoroethane) + R-143a (1,1,1-trifluoroethane) system have been measured for several compositions at temperatures from 280 to 330 K by means of a magnetic densimeter coupled with a variable-volume cell mounted with a metallic bellows. The experimental uncertainties of the temperature, pressure, density, and composition were estimated to be within {+-}10 mK, {+-}12 kPa, {+-}0.2%, and {+-}0.2 mass %, respectively. The purities of the samples used throughout the measurements are 99.96 area % for R-125 and 99.94 area % for R-143a. Based on these measurements, the thermodynamic behavior of the vapor-liquid equilibria of this binary refrigerant mixture has been represented using the Peng-Robinson equation for the bubble-point pressures, a correlation for the saturated-liquid densities, and an equation of state for the compressed-liquid densities.
- Research Organization:
- Keio Univ., Hiyoshi, Yokohama (JP)
- OSTI ID:
- 20000266
- Journal Information:
- International Journal of Thermophysics, Vol. 20, Issue 3; Conference: Thirteenth Symposium on Thermophysical Properties, Boulder, CO (US), 06/22/1997--06/27/1997; Other Information: PBD: May 1999; ISSN 0195-928X
- Country of Publication:
- United States
- Language:
- English
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