Thermodynamic charts - pure substances, azeotropes and ideal gases

This article follows on from the article Thermodynamic diagrams – Generalities [BE 8 040] in which the basic thermodynamics used to draw up the diagrams were presented. We refer the reader to this article for explanations of the equations used and for nomenclature.

The article itself is structured in three parts: first, the main types of diagrams used in practice are presented; a dozen examples relating to some common fluids are then given; finally, the representation in these diagrams of three basic thermodynamic cycles is explained (steam power plant cycle, R 134a refrigeration cycle, and gas turbine cycle).