R407H
R407H is a zeotropic mixture consisting of 32.5 weight% R32, 15 % R125, and 52.5% R134a. According to the manufacturer, it is considered drop-In refrigerant for R404A / R507 and a retrofit refrigerant for R22 It has a molar mass of 79.1 kg/kmol.
Thermodynamic data are provided using a Helmholtz mixture model fit by F-Chart Software to thermodynamic property data provided by the manufacturer and the REFPROP 10 program. The reference state for enthalpy and entropy is the IIR recommendation in which the specific enthalpy and entropy of saturated liquid are 200 kJ/kg and 1.0 kJ/kg-K, respectively. The model is applicable for temperatures between 200 K and 450 K with reduced densities up to 3.
Transport properties are estimated using data from REFPROP 10.