Similar to a simple Rankine cycle, a basic organic Rankine cycle (ORC) consists of four processes: increasing pressure of the working fluid through a pump, high temperature heat addition through an evaporator, expansion of the high temperature as well as high pressure fluid through a turbine, and low temperature heat ...

The organic Rankine cycle is is similar to the Rankine steam cycle, but uses an organic fluid such as refrigerants and hydrocarbons instead of water as the working fluid. The ordinary Rankine cycle uses thermal power to convert water to steam, which expands through a turbine in order to generate electricity.

The Rankine Cycle PV diagram consists of several key processes, including compression, isentropic expansion, and isentropic efficiency. These processes are critical in determining the overall efficiency and performance of the Rankine Cycle.

ORC WHR system consists of four major components: pump, evaporator, expander and condenser, as shown in Figure 1.