5.3 Thermodynamic Diagrams

  • Thermodynamic properties of pure fluids can be determined when any two properties are specified. Thermodynamic diagrams provide these properties in terms of two independent variables.

  • These diagrams find wide applications in computation of thermodynamic properties and analysis of processes.

  • Various combinations of these independent variables give rise to different type of thermodynamic diagrams. \(T\)-\(S\), \(P\)-\(H\), and \(H\)-\(S\) diagrams, as shown in Figs.9), (10) and (11), respectively are the most important thermodynamic diagrams.







  • Mollier diagram: It is the \(H\)-\(S\) diagram of water.