摘要:
A membrane humidifier for a fuel cell is disclosed, wherein a pressure drop in the humidifier is minimized and a humidification of a proton exchange membrane in the fuel cell is optimized.
摘要:
A membrane humidifier for a fuel cell is disclosed, wherein a pressure drop in the humidifier is minimized and a humidification of a proton exchange membrane in the fuel cell is optimized.
摘要:
A membrane humidifier for a fuel cell with a wet side plate having a plurality of flow channels formed therein and a dry side plate having a plurality of flow channels formed therein, the flow channels of the wet side plate adapted to facilitate a flow of a wet gas therethrough and the flow channels of said dry side plate adapted to facilitate a flow of a dry gas therethrough, wherein a pressure drop in the humidifier is minimized and a humidification of a proton exchange membrane in the fuel cell is optimized.
摘要:
A membrane humidifier for a fuel cell with a wet side plate having a plurality of flow channels formed therein and a dry side plate having a plurality of flow channels formed therein, the flow channels of the wet side plate adapted to facilitate a flow of a wet gas therethrough and the flow channels of said dry side plate adapted to facilitate a flow of a dry gas therethrough, wherein a pressure drop in the humidifier is minimized and a humidification of a proton exchange membrane in the fuel cell is optimized.
摘要:
Processes to shut down a fuel cell system are described. In one implementation (300), a load (215) is cyclically engaged and disengaged across a fuel cell stack (205) so as to deplete the fuel available to the system's fuel cells (205). Voltage and/or current thresholds may be used to determine when to engage and disengage the load (215) and when to terminate the shutdown operation. In another implementation (500), a variable load (405) is engaged and adjusted so as to deplete the fuel available to the system's fuel cells (205). As before, voltage and/or current thresholds may be used to determine when to adjust the load (405) and when to terminate the shutdown process. In still another implementation, a load (215 or 405) may be periodically engaged and disengaged during some portion of the shutdown process and engaged but adjusted during other portions of the shutdown process.
摘要:
A product includes a fuel cell stack, and an enclosure apparatus sealingly enclosing the fuel cell stack to define a hydrogen chamber between the fuel cell stack and the enclosure apparatus. An operation of the product may include maintaining a positive pressure of hydrogen in the hydrogen chamber.
摘要:
A product includes a fuel cell stack, and an enclosure apparatus sealingly enclosing the fuel cell stack to define a hydrogen chamber between the fuel cell stack and the enclosure apparatus.
摘要:
Methods of making an integrated subgasket assembly, a unitized electrode assembly, an integrated fuel cell assembly, and products thereof. The methods include forming the subgasket by providing a base sheet having an initial thickness, stretching a first region of the base sheet a first distance, and forming an active area window in the base sheet.
摘要:
A device for minimizing a buoyancy driven convective flow inside a manifold of a fuel cell stack includes a plurality of spaced apart baffle walls. The spaced apart baffle walls are configured to be disposed inside the manifold of the fuel cell stack. The spaced apart baffle walls increase a viscous resistance to the buoyancy driven convective flow inside the manifold.
摘要:
Methods of making an integrated subgasket assembly, a unitized electrode assembly, an integrated fuel cell assembly, and products thereof. The methods include forming the subgasket by providing a base sheet having an initial thickness, stretching a first region of the base sheet a first distance, and forming an active area window in the base sheet.