Test of the Curtiss and Muckenfuss spherocylinder model: thermal conductivities of mixtures of the noble gases with carbon dioxide, carbon disulphide or carbon oxide sulphide at 323 K

Abstract

The thermal conductivities of mixtures of five noble gases (helium, neon, argon, krypton and xenon) with carbon dioxide, carbon disulphide or carbon oxide sulphide have been measured at 323.1 K. The results have been used to test the Curtiss and Muckenfuss hard-spherocylinder model for gas-phase thermal conductivity, after modifying the expressions to apply to a binary gaseous mixture of hard, spherical molecules and hard, spherocylindrical molecules. It is found for these systems that the improvements in prediction obtained by including the effects of rotational relaxation are lost by the disadvantage of the model's unrealistic intermolecular potential function.