Siemens Aktiengesellschaft

Gunter Bauer

Michael Wechsung

Norbert Pieper

Hans-Ulrich Thierbach

The invention relates to a method for operating a power plant, wherein in partial load operation the increase of temperature results at the outlet of the high-pressure turbine section as a consequence of a throttling by means of the intermediate pressure valve.

Method for operating a power plant installation

A steam generator achieves an especially high efficiency when biomass is used as a fuel. The steam generator contains a first combustion chamber for generating a gaseous working medium by burning a first fuel and a second combustion chamber for burning a second fuel. The second combustion chamber is connected downstream of the first combustion chamber in flow direction of the working medium. Bituminous coal may be fed as the first fuel to the first combustion chamber and/or biomass, in particular straw, may be fed as the second fuel to the second combustion chamber. The working medium generated in the first combustion chamber during operation of the steam generator serves as combustion air in the second combustion chamber.

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Herzogenaurach, Germany

Gunter Bauer