Flow restrictors in fuel cell flow-field

Details Flow restrictors in fuel cell flow-field Flow restrictors in fuel cell flow-field

2006-09-26

2006-09-26

Alejandro, Raymond (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C429S006000, C429S006000

Reexamination Certificate

active

07112385

ABSTRACT:
Flow-field for a PEM fuel cell having a plurality of flow-channels including flow-restrictors strategically located throughout to achieve desired pressure differentials between fuel and oxidant supply and exhaust manifolds, and between adjacent flow-channels. A preferred flow-restrictor comprises a constriction in the flow channel that has a cross-sectional area that is less than the cross-sectional area of the flow-channel.

REFERENCES:
patent: 6099984 (2000-08-01), Rock
patent: 6309773 (2001-10-01), Rock
patent: 6358642 (2002-03-01), Griffith et al.
patent: 6428916 (2002-08-01), Grasso et al.
patent: 6528196 (2003-03-01), Fujii et al.
patent: 2003/0175577 (2003-09-01), Rock

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