Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Björn Beckmann

Eckart Schumann

Giuseppe Gaio

Christian Amann

Rostislav Teteruk

Thomas Beck

Fathi Ahmad

Andreas Böttcher

Winfried Esser

Kai Kadau

Eberhard Deuker

Rudolf Küperkoch

Björn Buchholz

Sebastian Schmitz

Thomas Hille

Boris Ferdinand Kock

Maarten Over

Georg Rollmann

Niklas Nauber

Marcel Zwingenberg

A method for operating a gas turbine plant with gaseous fuel, which is conveyed to the gas turbine plant through a gas line, burnt in a combustion chamber and then supplied to a gas turbine. At least one valve for controlling the flow of the fuel to the combustion chamber is installed in the gas line, a critical opening position being defined for the valve. To provide an improved method for operating a gas turbine plant in which the power of the gas turbine plant is kept at a maximum for as long as possible in the event of insufficient pressure in the gas line, a temperature of the fuel in the gas line is reduced when the valve is about to exceed the critical opening position.

Method for operating a gas turbine plant with gaseous fuel

A layer system including a substrate and a layer is provided. The layer system has a hole at least in the layer, and wherein at least one recess is present in a surface of the layer in a vicinity around the hole or directly adjoining a boundary line of the hole.

Modified interface around a hole

A process for producing a layer system is provided wherein the layer system has at least a substrate, a ceramic layer, which is applied to a surface structured in a targeted manner, in which process the intermediate layer, in particular the metallic layer, is applied in such a way that the recesses form during the coating. By introducing recesses into a surface, the stresses in the ceramic layer on the metallic substrate are reduced in such a manner that a longer lifespan for the ceramic layer is achieved.

Process for producing a layer system

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Duisburg, Germany

Björn Beckmann