Joule‐Thomson coefficients of argon‐carbon dioxide mixtures

Adiabatic Joule‐Thomson coefficients are presented for argon and two argon‐carbon dioxide mixtures (46.4% CO2 and 75.4% CO2) in the single‐phase part of the range: −120 < T <110°C, P < 190 atm. Results are analyzed in terms of the virial equation (including terms to account for the quadrupole moment of CO2), several forms of the Redlich‐Kwong equation, and the Benedict‐Webb‐Rubin equation. In general, the best results were obtained by the Redlich‐Kwong equation as modified by Barner et al. (1966).