Direct antifreeze cooled fuel cell power plant with passive...

Details Direct antifreeze cooled fuel cell power plant with passive... Direct antifreeze cooled fuel cell power plant with passive...

2007-02-20

2007-02-20

Yuan, Dah-Wei (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C429S006000

Reexamination Certificate

active

10748473

ABSTRACT:
The plant (60) includes at least one fuel cell (10, 62) having a wetproofed anode support (20) and a cathode support (24) for directing reactant streams adjacent catalysts (14, 16). A porous anode cooler plate (26) has its fuel channels (28A,28B,28C,28D) secured adjacent the anode support (20). A porous cathode water management plate (38) has its oxidant channels (40A,40B,40C,40D) secured adjacent the cathode support (24). A direct antifreeze solution passes only through coolant channels (32A,32B,32C,32D) of the anode cooler plate (26) so the solution cannot poison the catalysts (14, 16), while fuel cell product water flows passively through the water management plate (38) and water management channels (44A,44B,44C,44D) defined in the plate (38) to humidify reactant streams and be discharged from the fuel cell (62).

REFERENCES:
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patent: 6365291 (2002-04-01), Margiott
patent: 6416891 (2002-07-01), Condit et al.
patent: 6416892 (2002-07-01), Breault
patent: 6432566 (2002-08-01), Condit et al.
patent: 6461753 (2002-10-01), Breault et al.
patent: 6562503 (2003-05-01), Grasso et al.
U.S. Appl. No. 10/194,122, Michels et al.

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