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Thermophysics and Aeromechanics

2011 year, number 1

Thermal conductivity of refrigerant 507A in gaseous state

O.I. Verba
Kutateladze Institute of Thermophysics SB RAS
Keywords: thermal conductivity, refrigerant, R 507A, method of coaxial cylinders
Pages: 151-154


Thermal conductivity of refrigerant 507А in gaseous state has been measured with a stationary method of coaxial cylinders in the temperatures range of 315 - 425 K and pressures 0.105 - 1.855 MPa. Estimated values of temperature, pressure, and thermal conductivity measurement errors are, respectively, ± 0.05 K, ± 3.75 kPa and ± 1.5 − 2.5 %. Approximation dependence for thermal conductivity in the whole studied temperature and pressure range has been obtained. Results have been compared with available literature data.