Method and device for operating a fuel cell system
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United States of America Patent
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Jan 5, 1999
Grant Date -
N/A
app pub date -
Apr 8, 1997
filing date -
Jul 16, 1994
priority date (Note) -
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Abstract
The invention provides a method and apparatus for controlling gas circulation in a fuel cell system in which a stack of fuel cells is surrounded by a protective housing. According to the invention, used cathode gas and burnt combustion gas from the fuel cell stack directly into the interior of a protective housing which surrounds the fuel cell stack. A blower which is arranged inside the housing causes the used cathode gas to mix with the burnt combustion gas and recirculate to the cathode input of the fuel cell stack, where it is further with fresh gas from the exterior.
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