Contents - Index
The thermodynamic properties of refrigerant R22 are provided by Martin-Hou equation of state (A.I.Ch.E. Journal, 1:142, 1955). Fitted parameters are from Downing and Knight, DuPont Technical Bulletin RT-52, 1971.
The values of specific enthalpy and entropy are referred to 0 for saturated liquid at -40 C (F).
Range of applicability for transport function correlations:
Gas-phase viscosity: 250 K to 440 K
Liquid-phase viscosity: 170 K to 360 K
Gas-phase thermal conductivity: 230 K to 645 K
Liquid-phase thermal conductivity: 144 K to 340 K
The surface tension function has been fit to data provided by Liley and Desai, "Thermophysical Properties of Refrigerants", ASHRAE, 1993, ISBN 1-1883413-10-9. It is valid for temperatures between -150 C to 90 C.
This fluid is provided for backward compatibility. It is recommended that you us the more accurate property formulation provided by R22.
Fluid Property Information