Closed-cycle gas turbine
![Closed-Cycle Gas Turbine SchematicC compressor and T turbine assemblyw high-temperature heat exchangerʍ low-temperature heat exchanger~ mechanical load, e.g. electric generator](/Images/godic/202501/05/Schem_turb_gaz3_en-simple.svg0545.png")
A closed-cycle gas turbine is a turbine that uses a gas (e.g. air, nitrogen, helium, argon, etc.) for the working fluid as part of a closed thermodynamic system. Heat is supplied from an external source. Such recirculating turbines follow the Brayton cycle.