Vapor-liquid equilibrium, coexistence curve, and critical locus for binary HFC-32/HFC-134a mixture
- Iwaki Meisei Univ., Chuodai (Japan)
Two kinds of equilibrium measurements of binary R-32/134a mixtures were carried out. The vapor-liquid equilbria were measured by the static method in the temperature range between 283 and 313 K. On the basis of the present experimental data, the temperature dependence of the binary interaction parameter k{sub 12} for two equations of state, namely, the Soave-Redlich-Kwong equation and Carnahan-Starling-De Santis equation, was discussed. The vapor-liquid coexistence curve near the critical point was also measured by the observation of meniscus disappearance. The critical temperatures and critical densities of 30 and 70 wt% R-32 mixtures were determined on the basis of the saturation densities along the coexistence curve in the critical region. In addition, a correlation of the critical locus for this mixture is proposed as a function of composition.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 123373
- Report Number(s):
- CONF-940633--
- Journal Information:
- International Journal of Thermophysics, Journal Name: International Journal of Thermophysics Journal Issue: 5 Vol. 16; ISSN IJTHDY; ISSN 0195-928X
- Country of Publication:
- United States
- Language:
- English
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