Predictions of adiabatic Joule–Thomson coefficients based on modern potentials for noble gases

Abstract

The predictions of the Joule–Thomson coefficient for the inert gases on the basis of numerous intermolecular potentials are calculated and compared with directly measured experimental data and derived values from p–V–T measurements. For all Systems, the agreement is good except for TFD potentials derived by Gustafsson for He and Ne. We have also shown that the kinetic energy corrections in the low pressure region are not as high as those suggested by Gustafsson. Inversion temperatures are also calculated and recommended values are presented. Also presented are empirical relations which give as a function of temperature, second virial coefficients including the first two quantum corrections for many of the realistic potentials.