Equations of State

This is a compilation of 160 graphs showing how 16 different equations of state compare in their prediction of 10 different thermodynamic properties. Only minimal discussion of the details is provided herein, as this is readily available in many Web articles and texts, including my, Thermodynamic & Transport Properties of Fluids. What we see is that there are strengths and weaknesses for many of these equations, especially the early and simple ones. The greatest refinement and effort has been given to the 2020 Steam Formulation, as is evident in the figures.