Siemens Aktiengesellschaft

Horst Vollmar

Heribert Kurten

Wolfgang Taube

Uwe Radtke

Hans-Peter Schabert

Wolfgang Drenckhahn

Heiner Edelmann

Wolfgang Schrepfer

The invention relates a method for operating a high-temperature fuel cell installation having a high-temperature fuel cell module. The method includes the step of producing a combustion gas having a combustion gas power for an electrochemical reaction in a high-temperature fuel cell module by a reformation process using a heat content from the electrochemical reaction in the high-temperature fuel cell module for reforming the combustion gas. The method includes the step of producing excess hydrogen that is not consumed during the electrochemical reaction in the high-temperature fuel cell module. There is the step of operating cells of the high-temperature fuel cell module with a cell voltage of less than about 0.7 V. Finally, there is the step of storing the excess hydrogen that was not consumed in the electrochemical reaction outside of the high-temperature fuel cell module. In this manner, one optimizes the effectiveness of the high-temperature fuel cell installation. In addition, the invention relates a high-temperature fuel cell installation.

Method for operating a high-temperature fuel cell installation, and a

A high-temperature fuel cell system having a particularly simple construction and a particularly low power requirement for a compressor on the air side, includes at least one high-temperature fuel cell stack being disposed in a container and forming a partition or part of a partition separating an air entry space into which air inlets of high-temperature fuel cells open, and an air exit space into which air outlets of the high-temperature fuel cells open, from one another in gas-tight fashion in the container. Preferably, at least one location in the partition is provided at which the air situated in the air exit space can be recirculated at least partially into the air entry space through the use of air flowing into the air entry space. The effect achieved thereby is that the compressor compresses cold, relatively dense air and a recirculation of hot air in the container can be carried out without the use of moving parts.

High-temperature fuel cell stack arrangement with centrally located exit

A steam generating power plant includes a generator connected to a network, a steam turbine driving the generator, a steam bleeder line being connected to the steam turbine and having a load-dependently adjustable valve, a system having a superconducting magnetic energy accumulator and being connected electrically parallel to the generator, and a control unit. The control unit furnishes electrical power directly from the superconducting energy accumulator to level a power deficit lasting on the order of several seconds in the network and the control unit at the same time adjusts the valve to increase steam available to the steam turbine. A process for operating a steam generating power plant, an interlocking electrical network in combination with a number of steam generating power plants, and a process for operating the interlinking network in combination with the steam generating power plants, are also provided.

Steam generating power station, process for operating the same, and

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Herzogenaurach, Germany

Horst Vollmar