**LPG1**

LPG1 provides thermodynamic and transport property information for a petroleum gas mixture consisting of 65 mass % propane, 25% propylene and 10% n-butane. This mixture is commonly referred to as LPG. is a zeotropic It has a molar mass of 44.6 kg/kmol.

Property data 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 100 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

Propane is used as the reference fluid.