Analysis of the reduced modifications of the Peng–Robinson equation of state in the framework of the Joule–Tomson process

In the framework of thermodynamic method the modifications of the Peng–Robinson equations of state are considered in the paper. Critical parameters of the modified equations are calculated and their reduced forms are found as well. On this basis the Joule–Tomson process is analyzed and the explicit forms of effect sign inversion curves are built.