Coolant mixture separator assembly for use in a polymer electrolyte membrane (PEM) fuel cell power plant
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United States of America Patent
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Feb 6, 2007
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N/A
app pub date -
Oct 20, 2005
filing date -
Jun 17, 2002
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Abstract
A liquid-gas separator assembly is used in separating gas bubbles from a liquid coolant. The assembly includes a cylindrical housing containing a central tube which is surrounded by an annular chamber. The annular chamber is defined by the outer surface of the central tube and the inner surface of the cylindrical housing. An inlet line injects a stream of the coolant from the fuel cell stack area of the power plant into the bottom of the central tube in a tangential flow pattern so that the coolant and gas bubble mixture swirls upwardly through the central tube. The swirling flow pattern of the coolant and gas bubble mixture causes the gas bubbles to separate from the liquid coolant. The gaseous component of the separated mixture is then expelled from the housing through an outlet in the upper portion of the housing, and the coolant liquid descends through the annular chamber to the bottom of the housing.
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