# Thermodynamic efficiency (Rankine cycle)

## Description

Rankine cycle is a model that is used to predict the performance of steam engines. The Rankine cycle is an idealised thermodynamic cycle of a heat engine that converts heat into mechanical work. The heat is supplied externally to a closed loop, which usually uses water as the working fluid. Thermodynamic efficiency of the process is the ratio of the net power output per heat input.

Related formulas## Variables

n_{th} | Thermodynamic efficiency (dimensionless) |

W_{turb} | Net power output (J/s) |

Q_{in} | Heat flow rate to the system (J/s) |