Planar and essentially rectangular fuel cell and fuel cell block
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United States of America Patent
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Oct 16, 2007
Grant Date -
Jun 24, 2004
app pub date -
Feb 22, 2002
filing date -
Mar 2, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A planar, rectangular and water-cooled fuel cell includes a cooling element with a cooling chamber through which cooling water flows during the operation of the fuel cell. Cooling water does not flow through the cooling chamber in a homogeneous manner, normally resulting in local heating of the fuel cell in regions through which the cooling water flows through less frequently. A fuel cell is provided with a cooling element which includes an essentially rectangular cooling chamber with four corner regions, whereby the opening of the coolant flow is arranged in the first corner, the opening of a first coolant flow is arranged in a second corner and a second coolant flow is disposed in a third corner. The first coolant flow has a cross section Q.sub.1 on the narrowest point thereof and the second coolant flow has a cross section Q.sub.2 on the narrowest point thereof, the ratio of Q.sub.1/Q.sub.2 being 7-25.
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