In a Rankine cycle (select "Rankine cycle" from drop down menu to view schematic of cycle), high-pressure liquid water (1) enters a boiler where it is heated to saturation temperature (2), vaporized, and superheated (3). The superheated steam is fed to a steam turbine, where it expands and generates mechanical work. The steam exits the turbine at a lower pressure and temperature as either superheated steam or steam at saturation temperature with a quality (4). This steam condenses (5), and a pump compresses the liquid water to high pressure (1). The cycle is shown on a pressure-enthalpy (
) diagram. Use sliders to vary the inlet pressure to the turbine
and to select one of four outlet pressures
. Use a slider to vary the turbine efficiency
, which is the ratio of work produced by the turbine to the work produced by a reversible turbine between the same inlet and outlet pressures. The pathway for the irreversible turbine (
) is the thick dashed line on the
diagram; the reversible turbine pathway is represented by the thin dotted line. Select "turbine" from the drop-down menu to show the inlet and outlet conditions for the turbine and the work generated.