**R114**

R114 provides thermodynamic and transport property information for refrigerant R114 (C2F4Cl2, 1-2-diChloro-1,1,2,2 tetrafluoroetane, CAS #76-14-2). The correlation for the thermodynamic properties is applicable for temperatures between 273.15 K and 507 K for pressures up to 20 MPa. The correlation is based on information from:

Platzer, B., Polt, A., and Maurer, G., "Thermophysical Properties of Refrigerants," Springer-Verlag, Berlin, 1990.

The reference state is determined by setting specific enthalpy and entropy of saturated liquid to 0 at the normal boiling point (276.7 K).

__Viscosity and thermal conductivity have been estimated using a corresponding states approach with propane as the reference fluid 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

__Surface tension data are provided using the information in:__

Mulero, A., Cachadina, I, and Parra, M.

"Recommended Correlations for the Surface Tension of Common Fluids"

J.Phys. Chem Ref. Data, Vol. 41, No.4, 2012