About ORC Systems
Organic Rankine Cycle is a heat engine designed to convert heat to energy (work). ORC systems use ‘free heat,’ ‘waste heat’ or ‘unusable heat’ and convert it to electricity. ORC uses an organic working fluid (hydrocarbon or fluorocarbon) to recover heat from lower temperature sources (60-350°C). Available ORC Systems range from 5KWe to 30MWe.
ORC is a non-superheating thermodynamic cycle that uses an organic working fluid to generate electricity. ORC systems provide global warming benefits, as the power generated is CO2 free.
Lower temperature source examples include:
- Geothermal installations
- Thermal solar installations
- Industrial process plants
- Power plants (thermal, nuclear, bio), engines and generators
- Buildings & homes – heat from boilers and HVAC
- Transportation engines
How ORC Systems Work
ORC is a non-superheating thermodynamic cycle that uses an organic working fluid to generate electricity. Working fluid is heated beyond its boiling point, and the expanding vapor is used to drive a turbine. This turbine drives a generator converting the work into electricity. The working-fluid vapor is condensed back into a liquid and fed back through the system to repeat the cycle.
- Generate power from renewable heat sources, like geothermal and solar, directly increasing the amount of renewable energy and reducing CO2 emissions
- Generate power from waste heat that offsets grid consumption, reducing CO2 emissions
- Generate power that is CO2 free – no fuel consumed in cycle
- Are leak tight, eliminating direct chemical contribution to global warming as a result of working fluid emissions
- Use an organic working fluid to recover heat
- Are built to last, often for decades