Thermal conductivity and viscosity of 2,2-Dichloro-1,1,1-Trifluoroethane (HCFC-123)
- Kobe Univ. (Japan)
The thermal conductivity and the viscosity data of CFC alternative refrigerant HCFC-123 (2,2-dichloro-1,1,1-trifluoroethane; CHCl{sub 2}-CF{sub 3}) were critically evaluated and correlated on the basis of a comprehensive literature survey. Using the residual transport-property concept, we have developed the three-dimensional surfaces of the thermal conductivity-temperature-density and the viscosity-temperature-density. A dilute-gas function and an excess function of simple form were established for each property. The critical enhancement contribution was taken no account because reliable crossover equations of state and the thermal conductivity data are still missing in the critical region. The correlation for the thermal conductivity is valid at temperatures from 253 to 373 K, pressures up to 30 MPa, and densities up to 1623 kg{center_dot}m{sup -3}. The correlation for the viscosity is valid at temperatures from 253 to 423 K, pressures up to 20 MPa, and densities up to 1608 kg{center_dot}m{sup -3}. The uncertainties of the present correlations are estimated to be 5% for both properties, since the experimental data are still scarce and somewhat contradictory in the vapor phase at present.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 212867
- Journal Information:
- International Journal of Thermophysics, Vol. 17, Issue 2; Other Information: PBD: Mar 1996
- Country of Publication:
- United States
- Language:
- English
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