R452A
R452A (also known as Opteon XP44) is a zeotropic mixture consisting of 11 weight% R32, 59% R125 and 30% R1234yf . It has a molar mass of 103.5 kg/kmol. R452A exhibits a temperature glide between saturated liquid and vapor. It has been modeled as a pseudo-pure fluid based in the manner described by
E. Lemmon
"Pseudo-Pure Fluid Equations of State for the Refrigerant Blends R-410A, R-404A,R-507A, and R-407C"
International Journal of Thermophysics, Vol. 24, No. 4, July 2003
The model provided by EES was generated by fitting mixture data from the REFPROP program and from the manufacturer's website to a fundamental equation of state with separate correlations for the bubble and dew point pressures. The model is applicable for temperatures between 200 K and 450 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 properties were fitted to data provided by the manufacturer's website. Transport properties for gaseous R452A are available for temperatures between 230 K and 430 K. Liquid phase properties are available for temperatures between 233 and 343 K.