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| Number | Title | Issue Date |
| 7875397 | Permeable inlet fuel gas distributor for fuel cells An inlet fuel distributor (10-10d) has a permeable baffle (39, 54, 54a, 60) between a fuel supply pipe (11, 83) and a fuel inlet manifold (12, 53, 53a, 63) causing fuel to be uniformly distributed... | 01/25/2011 |
| 7449260 | Fuel cell stack including hydrogen pumping fuel cells A fuel cell system includes a fuel cell stack having a first plurality of fuel cells each having an anode, a cathode and an electrolyte disposed therebetween, the first plurality of fuel cells being communicated with a source of hydrogen-containing fuel and oxidant ... | 11/11/2008 |
| 7381491 | Maximizing PEM fuel cell power plant system efficiency at optimum system pressure A PEM fuel cell power plant system (10) has a process air pump (26), which may be a fan, a blower or a compressor, with an adiabatic efficiency of between 40% and 70%. The process air at the inlet 27 of the cathode reactant gas flow field 16 | 06/03/2008 |
| 7250229 | Procedure for starting up a fuel cell system having an anode exhaust recycle loop A procedure for starting up a fuel cell system that is disconnected from its primary load and that has air in both its cathode and anode flow fields includes a) connecting an auxiliary resistive load across the cell to reduce the cell voltage; b) initiating a recirc... | 07/31/2007 |
| 6986959 | Low temperature fuel cell power plant operation A fuel cell power plant system includes the ability to operate an enthalpy recovery device even under cold conditions. A bypass arrangement allows for selectively bypassing one or more portions of the enthalpy recovery device under selected conditions. In one exampl... | 01/17/2006 |
| 6916571 | PEM fuel cell passive water management Water flow field inlet manifolds (33, 37) are disposed at the fuel cell stack (11) base. Water flow field outlet manifolds (34, 38) are located at the fuel cell stack top. Outlet and inlet manifolds are interconnected (41-43, 47, 49, 50) ... | 07/12/2005 |
| 6835480 | Method of using a temporary dilute surfactant water solution to enhance mass transport in a fuel cell The invention is a method of using a temporary dilute surfactant water solution to enhance mass transport in a fuel cell (10) that generates electrical current from hydrogen containing reducing fluid and oxygen containing oxidant reactant streams. The method ... | 12/28/2004 |
| 6777119 | Actively-cooled water recovery in fuel cell power plants A fuel cell power plant with enhanced water recovery includes a fuel cell power plant adapted to receive a reducing fluid and an oxidant and to generate therefrom electricity and an at least partially saturated exhaust stream; a mass and energy transfer device defin... | 08/17/2004 |
| 6740435 | System and method for preparing fuel for fuel processing system A fuel cell system includes a fuel cell for reacting a hydrogen rich gas; a fuel processor system for converting a hydrocarbon fuel-steam mixture into said hydrogen rich gas; and a system for preparing the hydrocarbon fuel-steam mixture which includes (a) structure ... | 05/25/2004 |
| 6723461 | Water management system for fuel cell An improved water management system for PEM fuel cells is provided. Catalyst layers are disposed on both sides of a proton exchange membrane. Porous plates are positioned adjacent the catalyst layers. Water transport plates are positioned adjacent the porous plates ... | 04/20/2004 |
| 6699612 | Fuel cell power plant having a reduced free water volume The invention reduces free water volume in a fuel cell power plant so support systems of the plant are freeze tolerant. The fuel cell power plant includes a coolant system having a sealed cooler plate that circulates an antifreeze coolant in heat exchange... | 03/02/2004 |
| 6514635 | Procedure for shutting down a fuel cell system having an anode exhaust recycle loop A procedure for shutting down an operating fuel cell system that recirculates a portion of the anode exhaust in a recycle loop, includes disconnecting the primary load from the external circuit, stopping the flow of air to the cathode, and applying an aux... | 02/04/2003 |
| 6451466 | Functional integration of multiple components for a fuel cell power plant A fuel cell power plant having a plurality of functionally integrated components including a fuel cell assembly provided with a fuel stream, an oxidant stream and a coolant stream. The fuel cell power plant functionally integrates a mass and heat recovery... | 09/17/2002 |
| 6432566 | Direct antifreeze cooled fuel cell power plant A direct antifreeze cooled fuel cell power plant is disclosed. The plant includes at least one fuel cell a thermal management system that directs flow of a cooling fluid for controlling heat within the plant, including a direct antifreeze solution passing... | 08/13/2002 |
| 6428916 | Coolant treatment system for a direct antifreeze cooled fuel cell assembly A coolant treatment system for a direct antifreeze cooled fuel cell power plant including a degassifier for providing interaction between an oxidant and an antifreeze solution which has circulated throughout the fuel cell power plant so that dissolved gas... | 08/06/2002 |
| 6416891 | Operating system for a direct antifreeze cooled fuel cell power plant An operating system for a direct antifreeze cooled fuel cell power plant is disclosed for producing electrical energy from reducing and process oxidant fluid reactant streams. The system includes at least one fuel cell for producing electrical energy from... | 07/09/2002 |
| 6361891 | Direct antifreeze cooled fuel cell power plant system A direct antifreeze cooled fuel cell power plant system is disclosed for producing electrical energy from reducing and process oxidant fluid reactant streams. The system includes at least one fuel cell for producing electrical energy from the reducing and... | 03/26/2002 |
| 6331366 | Operating system for a fuel cell power plant The invention is an operating system for a fuel cell power plant that includes at least one fuel cell for producing electrical energy from a reducing and oxidant fluid and fuel processing components including a reformer and a burner for processing a hydro... | 12/18/2001 |
| 6322915 | Humidification system for a fuel cell power plant The invention is a humidification system for a fuel cell power plant. The system includes at least one fuel cell comprising a coolant flow field adjacent the cathode flow field. The coolant flow field includes a coolant inlet, a coolant outlet, and a spli... | 11/27/2001 |
| 6312842 | Water retention system for a fuel cell power plant The invention is a water retention system for a fuel cell power plant having at least one fuel cell and a coolant loop with a coolant reservoir and coolant passages for directing a coolant fluid through the fuel cell. An air conditioning unit is provided ... | 11/06/2001 |
| 6242118 | Method and apparatus for removing contaminants from the coolant supply of a fuel cell power plant A method and apparatus for removing contaminants from the coolant supply of a fuel cell power plant, wherein coolant which has been exhausted from the fuel cell power plant is fed to an oxidant manifold. The exhausted coolant interacts with the oxidant fl... | 06/05/2001 |
| 6207308 | Water treatment system for a fuel cell assembly A water treatment system for a fuel cell stack, wherein a degassifier provides for interaction between an oxidant and a coolant which has circulated throughout the fuel cell stack so that dissolved gases within the circulated coolant are removed.... | 03/27/2001 |
| 6171718 | Pressurized water recovery system for a fuel cell power plant The invention is a pressurized water recovery system for a fuel cell power plant including at least one fuel cell having an electrolyte between anode and cathode electrodes for producing an electric current from a reducing fluid and an oxidant stream. A c... | 01/09/2001 |
| 6120923 | Steam producing hydrocarbon fueled power plant employing a PEM fuel cell The present invention relates to a method and apparatus for creating steam from the cooling stream of a proton exchange membrane (PEM) fuel cell. As the cooling stream exits the PEM fuel cell, a portion of the cooling fluid is extracted from the circulati... | 09/19/2000 |
| 6048383 | Mass transfer composite membrane for a fuel cell power plant A mass transfer composite membrane for use with a fuel cell power plant includes a transfer medium core between opposed, rigid, porous support sheets. An inlet surface of the composite membrane is positioned in contact with an oxidant inlet stream of a fu... | 04/11/2000 |
| 6007931 | Mass and heat recovery system for a fuel cell power plant A mass and heat recovery system for a fuel cell power plant includes at least one fuel cell for producing electrical energy, hydrocarbon fuel processing components for producing a hydrogen rich reducing fluid for the fuel cell, and a direct mass and heat ... | 12/28/1999 |
| 5573866 | Direct methanol oxidation polymer electrolyte membrane power system A polymer electrolyte membrane fuel cell includes an anode chamber and a cathode chamber which are separated by the electrolyte membrane. The fuel cell directly oxidizes a liquid methanol fuel which is fed into the anode chamber from a liquid methanol sto... | 11/12/1996 |
| 4041210 | Pressurized high temperature fuel cell power plant with bottoming cycle A power plant for the generation of electricity utilizes high temperature fuel cells, such as molten carbonate fuel cells, as its main power supply. Part of the oxidant exhaust stream from the fuel cell is recycled through the fuel cell. Waste energy from... | 08/09/1977 |
