초록 ▼

A method of expanding a hot flue-gas flow in a turbine through which a hot flue-gas passes. A structural component of the turbine is cooled by a cooling-gas flow which flows through the structural component and is fed to the hot flue-gas flow. Fuel is added in a metered fashion to the flue-gas flow

A method of expanding a hot flue-gas flow in a turbine through which a hot flue-gas passes. A structural component of the turbine is cooled by a cooling-gas flow which flows through the structural component and is fed to the hot flue-gas flow. Fuel is added in a metered fashion to the flue-gas flow in the turbine in such a way that a temperature drop in the flue-gas flow, which temperature drop results from the feeding of the cooling-gas flow without a metered addition of the fuel, is largely compensated for by the combustion of the fuel added in a metered fashion to the hot flue-gas flow. A corresponding turbine is also taught.

대표청구항 ▼

[ I claim:] [1.] A gas expansion method, which comprises:providing a hot flue-gas flow through a turbine;cooling at least one structural component of the turbine by a cooling-gas flow flowing through the at least one structural component;feeding the cooling-gas flow from the at least one structural

[ I claim:] [1.] A gas expansion method, which comprises:providing a hot flue-gas flow through a turbine;cooling at least one structural component of the turbine by a cooling-gas flow flowing through the at least one structural component;feeding the cooling-gas flow from the at least one structural component into the hot flue-gas flow; andmetering fuel into the cooling gas flow in the turbine and combusting the fuel with the cooling gas flow and raising a temperature of the cooling-gas flow exiting the structural component substantially to a temperature of the hot flue-gas flow prevailing at the structural component.