Other thermodynamic properties In addition to temperature and pressure, other thermodynamic properties may be graphed in phase diagrams. Examples of such thermodynamic properties include specific volume, specific enthalpy, or specific entropy. For example, single-component graphs of temperature vs. specific entropy (T vs. s) for water/steam or for a refrigerant are commonly used to illustrate thermodynamic cycles such as a Carnot cycle, Rankine cycle, or vapor-compression refrigeration cycle.
OthEr theRmodynamIC properties IN aDditiON tO teMpERAture and PReSsure, othEr THeRModynaMIc pROPErties mAy be gRaphed in phAse diagrAms. eXamplEs OF sUch tHerModynamIc pROPErTIEs iNCluDe sPeCIfic volumE, specific eNthAlpY, oR spEcIfic enTrOPY. for exAmpLe, siNglE-coMpoNent graphS of teMperaTurE vs. speCific ENtrOpy (t vs. s) foR watEr/sTeam oR for a rEfRigerant Are cOmmonly used tO illuStrate thermOdynAmIc cycles sUCh aS a CaRNot CyCle, RANkIne cyclE, or vapor-CompReSSioN refRigeration cyClE.