Solid polymer fuel cell system and method for humidifying and ad

Details Solid polymer fuel cell system and method for humidifying and ad Solid polymer fuel cell system and method for humidifying and ad

1998-06-30

2000-08-22

Gorgos, Kathryn

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 13, 429 19, 429 26, H01M 818, H01M 800, H01M 804

Patent

active

061069647

ABSTRACT:
Reactant gas supply streams for solid polymer fuel cells may be heated and humidified using heat generated by the fuel cell and water vapor from the fuel cell exhaust. The heat and water vapor in the oxidant exhaust stream are sufficient to heat and humidify a reactant gas supply stream, preferably the oxidant supply stream. The heating and humidifying can be accomplished by flowing a reactant gas supply stream and a fuel cell exhaust gas stream on opposite sides of a water permeable membrane in a combined heat and humidity exchange apparatus. The method and apparatus are particularly suitable for use with air-cooled fuel cell systems and systems which employ near ambient pressure air as the oxidant gas supply.

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Masayasu, JP--09-055218--"Fuel Cell Gas Humidifying System and Gas Humidifying Method," (Jan. 2, 1997) Abstract Only.
JP-07-176313--"Fuel battery system--uses reproduction heat exchanger to supply pure water for air humidification," Abstract Only Jul. 14, 1995.

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