Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Patent
1994-03-14
1996-04-09
Kalafut, Stephen
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
429 26, H01M 804
Patent
active
055060668
ABSTRACT:
An ultra-passive, variable pressure, regenerative fuel cell system in accordance with the invention utilizes a single gaseous hydrogen storage tank that encloses a plurality of smaller gaseous oxygen storage tubes. This design effectively eliminates the need for active pumping elements to protect the fuel cell's anode surface. A single heating/cooling coil, inside the gaseous hydrogen storage tank, is used to prevent: (a) icing inside the storage tanks due to isentropic expansion during electrical power generation, or (b) overheating of gases due to isentropic compression during electrical recharging operations. Advantageously, the invention also reduces the overall weight and mechanical complexity of the fuel cell system, thereby improving system reliability.
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Field Harry B.
Kahm Steven E.
Kalafut Stephen
Montanye George A.
Rockwell International Corporation
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