A comparison of characteristic points of inversion curves from two-parameter equations of state

Abstract

Abstract

The article presents the method of predicting inversion curves from two-parameter equations of state such as Van der Waals, Berthelot, Dieterici, Redlich-Kwong and the law of corresponding state. The results showed that the characteristic points of the inversion curve do not depend on working fluids, but depend on the equations of state. From that, a general form of the equation of state is proposed to predict the thermodynamic properties of new pure refrigerants with operating pressures below critical at points of refrigeration cycles.

Keywords: Equation of states, inversion curves, low temperature..