Measurements of the thermal conductivity of HFC-134a in the supercritical region

Bernard Le Neindre (1) , Yves Garrabos (2) , F. Gumerov (3) , A. Sabirzianov (3)

1 LIMHP - Laboratoire d'Ingénierie des Matériaux et des Hautes Pressions
2 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
3 Kazan State Technological University

Measurements of the thermal conductivity of HFC-134a made in a coaxial cylinder cell operating in steady state are reported. Measurements were performed along several quasi-isotherms at temperatures ranging from the critical temperature T_c (374 K) to T_c + 150 K and in a pressure range from (0.1 to 40) MPa. Parameters of a background equation were determined from experimental data to analyze the critical enhancement of the thermal conductivity as a function of temperature and density. An analysis of the various sources of errors leads to an estimated uncertainty of the thermal conductivity data of ± 3 %.

Domaines: Matériaux

Bernard Le Neindre, Yves Garrabos, F. Gumerov, A. Sabirzianov. Measurements of the thermal conductivity of HFC-134a in the supercritical region. Journal of Chemical and Engineering Data, 2009, 54 (9), pp.2678-2688. ⟨10.1021/je900210h⟩. ⟨hal-00440760⟩