Thermal conductivity of the R-32/R-125 (15/85) mixture in the vapor phase
E.P. Raschektaeva, S.V. Stankus
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: thermal conductivity, mixed refrigerant, vapor phase
Abstract
The thermal conductivity of the R-32/R-125 (15/85) mixture was investigated in the temperature range of 305 - 411 K and pressures of 0.1 - 1.8 MPa. Measurements were carried out by the stationary method of coaxial cylinders. The error of the experimental data on thermal conductivity was 1.5 - 2.5%, and the measurement errors of temperature and pressure did not exceed 0.05 K and 4 kPa, respectively. A generalizing equation for calculating the thermal conductivity as a function of pressure and temperature was obtained. The thermal conductivity on the condensation line and in the ideal gas state was determined.
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