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David Weingaertner, Sunnyvale US

David Weingaertner, Sunnyvale, CA US

Patent application numberDescriptionPublished
20090029205Integrated fuel line to support CPOX and SMR reactions in SOFC systems - A fuel cell system comprises at least one fuel cell stack, a CPOX reactor, and a conduit for providing a fuel stream to the at least one fuel cell stack through the CPOX reactor during both a start up and a steady state modes of operation of the system.01-29-2009
20090042068Hot box design with a multi-stream heat exchanger and single air control - A fuel cell stack module includes a plurality of fuel cell stacks, an anode tail gas oxidizer (ATO) which is located in a heat transfer relationship with the plurality of fuel cell stacks, a base supporting the plurality of fuel cell stacks and the ATO, and at least one heat exchanger located in the base. An ATO exhaust stream and an anode exhaust stream from the fuel cell stacks heat the stack fuel and air inlet streams in a multi-stream heat exchanger.02-12-2009
20090233154Multi-material high temperature fuel cell seals - A fuel cell stack includes a plurality of fuel cells, a plurality of interconnects and a multi-material seal comprising a first seal material and a second seal material, where the second seal material first forms an effective seal at a higher temperature than the first seal material.09-17-2009
20090280360Derivation of control parameters of fuel cell systems for flexible fuel operation - A method of operating a fuel cell system includes characterizing the fuel or fuels being provided into the fuel cell system, characterizing the oxidizing gas or gases being provided into the fuel cell system, and calculating at least one of the steam:carbon ratio, fuel utilization and oxidizing gas utilization based on the step of characterization.11-12-2009
20100009221Recuperators with spiral flow for fuel cell systems - A fuel cell system includes a plurality of fuel cell stacks, and one or more devices which in operation of the system provide an azimuthal direction to one or more anode or cathode feed or exhaust fluid flows in the system.01-14-2010
20100035109Fuel cell systems with increased floor density - A method of operating a fuel cell-based power generation system includes providing a plurality of fuel cell systems, each system including a plurality of fuel cell modules, and moving at least one fuel cell module of a fuel cell system with respect to a fuel cell module of another system.02-11-2010
20100047637OPERATION OF FUEL CELL SYSTEMS WITH REDUCED CARBON FORMATION AND ANODE LEADING EDGE DAMAGE - A method of operating a fuel cell system includes introducing a fuel mixture comprising hydrogen, fuel, and steam at a fuel inlet of the fuel cell system, and operating the fuel cell system to generate electricity. A ratio of hydrogen to carbon from fuel (H02-25-2010
20110053027Multi-Stream Heat Exchanger for a Fuel Cell System - A multi-stream heat exchanger includes at least one air preheater section, at least one cathode recuperator section, and at least one anode recuperator section, wherein each section is a plate type heat exchanger having two major surfaces and a plurality of edge surfaces, a plurality of risers through at least some of the plates, and a plurality of flow paths located between plates. The cathode recuperator section is located adjacent to a first edge surface of the anode recuperator, and the air preheater section is located adjacent to a second edge surface of the anode recuperator section.03-03-2011

Patent applications by David Weingaertner, Sunnyvale, CA US