A combined-cycle gas turbine (CCGT) plant combines a gas turbine and a steam turbine: exhaust heat from the gas turbine passes through a heat-recovery steam generator (HRSG) to drive a second, steam cycle. This raises overall efficiency well above a simple-cycle plant.
Modern combined-cycle plants reach about 60-64% efficiency, far above open-cycle gas turbines (~35-40%).
Yes — the HRSG is the component that recovers the gas turbine's exhaust heat to feed the steam cycle.
Explore the data: power plants by technology · HRSG map · nuclear map. Removable insulation for hot equipment like HRSGs: Inzonex.
