Thermal conductivity of halogenated ethanes, HFC-134a, HCFC-123, and HCFC-141b

Journal Article · Thu Dec 31 23:00:00 EST 1992 · International Journal of Thermophysics; (United States)

DOI:https://doi.org/10.1007/BF00522663· OSTI ID:7071549

Yamamoto, R ^[1]; Matsuo, S; Tanaka, Y ^[2]

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1. Kyoto Univ. (Japan)
2. Kobe Univ. (Japan)

The gaseous thermal conductivity of three CFC alternatives, HFC-134a (1,1,1,2-tetrafluoroethane), HCFC-123 (1,1-dichloro-2,2,2-trifluoroethane), and HCFC-141b (1,1-dichloro-1-fluoroethane), has been measured in the temperature ranges 273-363 K (HFC-134a) and 313-373K (HCFC-123, JCFC-141b) at pressures up to saturation. The measurements were performed with a new improved transient hot-wire apparatus. The uncertainty of the experimental data is estimated to be within 1%. The gaseous thermal conductivity obtained in this work together with the liquid thermal-conductivity data from the literature were correlated with temperature and density by an empirical equation based on the excess thermal-conductivity concept. The equation is found to represent the experimental results with average deviations of 2.5% for HFC-134a, 0.75% for HCFC-123, and 0.55% for HCFC-141B, respectively.

• OSTI ID: 7071549
• Journal Information: International Journal of Thermophysics; (United States), Journal Name: International Journal of Thermophysics; (United States) Vol. 14:1; ISSN 0195-928X; ISSN IJTHDY
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606* -- Other Materials-- Physical Properties-- (1992-)
ALKANES
DENSITY
ETHANE
FLUIDS
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROCARBONS
MEDIUM PRESSURE
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHYSICAL PROPERTIES
REFRIGERANTS
SATURATION
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
WORKING FLUIDS