Thermal conductivity of HFC-152a in the temperature range 300 to 455 K at pressures up to 55 MPa

International audienceThermal conductivity of HFC-152a was measured in a coaxial cylinder cell operating in a steady state. The measurements were performed along several quasi-isotherms between 300 and 455K in the gas phase and the liquid phase. The pressure range covered varies from 0.1 to 55 MPa. An empirical equation is presented which describes the thermal conductivity outside the critical region as a function of temperature and density from 300 to 455 K. A careful analysis of the various sources of error leads to an estimated uncertainty of approximately ′1.5%