R464A
R464A is a zeotropic mixture consisting of 27 weight% R32, 27% R125, 40% R1234ze(E), and 6% R227ea. It is an A1 refrigerant. It is considered as a replacement for R-404A. It has a molar mass of 88.5 kg/kmol with a GWP of 1430.
Property data for R464A are provided using a Helmholtz mixture model fitted by F-Chart Software using thermodynamic property data generated by REFPROP. The model is applicable for temperatures between 180 K and 440 K with pressures up to 20 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 properties are estimated using a corresponding states approach as suggested in:
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