Closed-cycle gas turbine

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.

For turbines powered by the internal combustion of fuel, see Gas turbine.
Not to be confused with Combined-cycle gas turbine.

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