R511A
R516A is an azeotropic mixture consisting of 95 weight% propane, 5% diethyle either. It has a molar mass of 44.19 kg/kmol.
Property data for R511A are provided using a generalized equation of state fitted by F-Chart Software using thermodynamic property data generated by REFPROP. The model is applicable for temperatures between 140 K and 630 K with pressures up to 50 MPa. The reference state is saturated liquid at 0 C for which specific enthalpy and entropy are 200 kJ/kg and 1.0 kJ/kg-K, respectively.
Transport Data
The viscosity and thermal conductivity for R511A were estimated using the corresponding states approach described the following references with propane as the reference fluid.
Klein, S.A., McLinden, M.O., and Laesecke , A.,
"An improved extended corresponding states method for estimation of viscosity of pure refrigerants and mixtures",
Int. J. of Refrigeration, 20, pp. 208-217, 1997
McLinden et al.,
"An extended corresponding states model for the thermal conductivity of refrigerants and refrigerant mixtures",
Int. J. of Refrigeration, 23, pp. 43-63, 2000
The correlation are valid over the same range of temperature as the equation of state.
Surface tension data were fit to data obtained from the REFPROP.