Organic Rankine Cycle (ORC) is a Rankine cycle with low-boiling point organics as the working fluid. It is mainly composed of four sets of waste heat boilers (or heat exchangers), turbines, condensers and working fluid pumps. .

     ORC generator set working principle

1. The medium used by the ORC generator set is organic matter. Utilize the low boiling point characteristics of organic medium (evaporate at 35-65°C).
2. The selection of organic medium is determined by the temperature level of waste heat. Commonly used mediums include R134, R245fa, etc. It is an internationally accepted organic medium, safe, reliable, non-toxic, non-flammable, and stable in physical and chemical properties.
3. When the waste heat temperature is greater than the evaporation temperature of the medium, the organic medium vaporizes in the evaporator and changes into a gas with a certain pressure, pushing the screw (or turbine) expander to do work, and the screw (or turbine) machine drives the generator Power generation.
4. After the work is done, the gas is a two-phase gas-liquid phase, which is condensed into a full liquid phase by the condenser and enters the liquid storage tank. The working fluid pump pumps the liquid working fluid into the evaporator to complete a work cycle.