Fuel cells with integrated humidification and method for humidifying fuel cell process gas
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United States of America Patent
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app pub date -
Dec 22, 2006
filing date -
Jan 31, 2001
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Abstract
Fuel cell with integrated humidification, comprise a cathode-side or anode-side humidification unit with a heat exchanger, a condensate separator, a capillary tube and a Venturi-nozzle and/or pump. A method for humidifying process gas for the operation of a fuel cell is disclosed wherein only product water is used and the gas containing O.sub.2 for the cathode is humidified by the cathode off-gas which contains water vapor by means of a first humidification unit and/or the combustion gas containing H.sub.2 for the anode is humidified by the anode off-gas which contains water vapor by means of a second humidification unit, or the combustion gas containing H.sub.2 for the anode is humidified by the cathode off-gas which contains water vapor by means of a first humidification unit and/or the gas containing O.sub.2 for the cathode is humidified by the anode off-gas which contains water vapor by means of a second humidification unit.
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