Thermal conductivity of ternary refrigerant mixtures of HFC-32/125/134a in the liquid phase

Journal Article · Wed Sep 01 00:00:00 EDT 1999 · International Journal of Thermophysics

DOI:https://doi.org/10.1023/A:1021484904269· OSTI ID:20020842

Gao, X; Nagasaka, Y; Nagashima, A

The liquid thermal conductivity of two ternary mixtures of HFC-32/125/134a (23.0/25.0/52.0 and 19.0/43.8/37.2 wt%) was measured using a transient hotwire instrument in the temperature ranges from 193 to 293 K and from 213 to 293, respectively, and in the pressure range from 2 to 30 MPa. The thermal conductivity has an estimated uncertainty of {+-}7.0%. For engineering purposes, the thermal conductivity data were correlated using a polynomial in temperature and pressure for each mixture with a standard deviation of 0.6%.

• Research Organization: Keio Univ., Yokohama (JP)
• OSTI ID: 20020842
• Journal Information: International Journal of Thermophysics, Vol. 20, Issue 5; Other Information: PBD: Sep 1999; ISSN 0195-928X
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
REFRIGERANTS
MATERIAL SUBSTITUTION
MIXTURES
FLUORINATED ALIPHATIC HYDROCARBONS
THERMAL CONDUCTIVITY
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
DATA COVARIANCES