Study the following **pV diagrams** to understand better about the pressure-volume diagram. The following pV diagrams include Carnot, Otto, Rankine, and Stirling cycle. Give a look at the following examples of the Carnot cycle pV diagram below.

The *pV diagram* provided above is the Carnot cycle. On the diagram, the isothermal processes follow the isotherm lines for the gas, adiabatic processes move between isotherms and the area bounded by the complete cycle path represents the total work that can be done during one cycle. The following pV diagram of the Otto Cycle shows the area is bounded by the complete cycle path represents the total work that can be done during one cycle. The other one is the Rankine cycle.

Meanwhile, the Rankine cycle is a model used to predict the performance of steam turbine systems. The heat is supplied externally to a closed loop, which usually uses water as the working fluid. The next pV diagram is the Stirling cycle that includes a thermodynamic cycle that describes the general class of Stirling devices. The Stirling cycle is an altered version of the Carnot cycle in which the two isentropic processes featured in the Carnot cycle are replaced by two constant-volume regeneration processes.

Study deeper about the cycle with these pV diagrams! You can download and use these diagrams on your website, document or presentation. Check back soon for more printable educational diagrams since we are always updating!