Contents - Index
AIR_ha provides thermodynamic properties for the gas mixture composing air using the fundamental equation of state developed by:
E.W. Lemmon, R.T. Jacobsen, S.G. Penoncello, and Daniel Friend
"Thermodynamic Properties of AIr and Mixtures of Nitrogen, Argon, and Oxygen from 60 to 2000 K at Pressures to 2000 MPa",
J. Phys. Chem. Ref. Data, Vol. 29, No. 3, 2000.
The thermodynamic property correlations are valid for temperatures between 60 K and 2000 K at pressures up to 2000 MPa.
Note that AIR_ha provides thermodynamic properties assuming real fluid behavior. Use AIR for ideal gas properties of air as found in the air tables of thermodynamic textbooks.
The transport properties are implemented with the equations provided in:
E.W. Lemmon and R.T. Jacobsen
"Viscosity and Thermal Conductivity Equations for Nitrogen, Oxygen, Argon, and Air",
International Journal of Thermophysics, Vol. 25, No. 1, January 2004, pp. 21-69
The surface tension function of AIR_ha has been fit to data tabulated by Liley and Desai, "Thermophysical Properties of Refrigerants", ASHRAE, 1993, ISBN 1-1883413-10-9. It is valid for temperatures between 70 K and 130 K.
Fluid Property Information