Thermodynamic Properties of R-22, Chlorodifluoromethane

Temperature Pressure Density Volume Int. energy Enthalpy Entropy c. Sound speed Joule-Thomson 

The values in these tables were generated from the NIST REFPROP software (Lemmon, E. W., McLinden, M. O., and Huber, M. L., NIST Standard Reference Database 23 Reference Fluid Thermodynamic and Transport Properties—REFPROP, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, Md., 2002, Version 7.1). The primary source for the thermodynamic properties is Kamei, A., Beyerlein, S. W., and Jacobsen, R. T, Application of Nonlinear Regression in the Development of a Wide Range Formulation for HCFC-22, Int.. Thermophys. 16 1155-1164, 1995. Validated equations for the viscosity and thermal conductivity are not currently available for this fluid. 

The uncertainties of the equation of state are 0.1% in density, 1% in heat capacity, and 0.3% in the speed of sound, except in the critical region. The uncertainty in vapor pressure is 0.2%. 

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