ESDU 97028 provides evaluated thermophysical properties data for sulphur hexafluoride on the saturation line@ in the ideal gas and dilute gas state@ in the single phase gas and supercritical region. The recommended values of the transport properties are based on those data which are considered to be the best available; the recommended values for the thermodynamic properties are derived from an equation of state. Equations based on a critical evaluation of experimental data in the literature are given for the variation with temperature along the saturation line for the following liquid and vapour properties: density@ specific enthalpy@ specific heat capacity at constant pressure@ dynamic viscosity and thermal conductivity. Also given are equations for the variation with temperature along the saturation line of the vapour pressure@ latent heat of vaporisation and surface tension. In the single phase@ equations are given for the variation with temperature of the specific heat capacity at constant pressure and specific enthalpy in the ideal gas state@ and the dynamic viscosity and thermal conductivity in the dilute gas state. Single phase data for the density@ compression factor specific enthalpy@ specific entropy@ isobaric and isochoric specific heat capacities at fixed values of temperature and pressure are tabulated for the gas phase and supercritical region. The saturation line properties@ in SI units@ calculated from the equations are tabulated at 5 K intervals and at 5 degree Celsius intervals from the triple point to the critical temperature for the vapour pressure@ saturation densities and surface tension and to within at least 10 kelvin of the critical temperature for the remainder. Ideal and dilute gas properties@ also in SI units calculated from the equations are tabulated at 20 K and at 20 degree Celsius intervals from the triple point to 1000 K. The single phase properties@ in SI units are presented for temperatures from -50 to 100 degree Celsius inclusive and for pressures up to 10 000 kPa. In the absence of experimental data@ the tabulated data are extrapolated or predicted values and these are indicated in the tables. Conversion factors to facilitate use of the equations and tables in British units are included. A full bibliography is given of the sources consulted and the uncertainties of the tabulated data are discussed in the text.
ESDU 97028 B-2003 history
2003ESDU 97028 B-2003 Thermophysical properties of sulphur hexafluoride.