A diagram of a Rankine cycle is shown in this simulation. The Rankine cycle is an idealized thermodynamic cycle describing the process by which certain heat engines, such as steam turbines, allow mechanical work to be extracted from a fluid as it moves between a heat source and heat sink. The enthalpy and pressure of the fluid leaving the boiler, turbine, condenser, and pump are shown as circled numbers in the plot. You can also change the graphic to display the conditions entering and leaving the turbine, or to display a graphic showing what phases are present in each stream.