Humidification of reactant streams in fuel cells

Details Humidification of reactant streams in fuel cells Humidification of reactant streams in fuel cells

2006-05-02

2006-05-02

Bell, Bruce F. (Department: 1746)

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

C429S006000, C429S006000, C429S006000, C429S006000, C429S006000, C429S006000, C429S006000, C429S006000

Reexamination Certificate

active

07037610

ABSTRACT:
Energy consumption is minimized in the fuel cell system including a fuel cell10having a fuel inlet14, an oxidant inlet12, a cathode gas outlet16and an anode tail gas outlet18. At least one humidifier52,70; 54,72, is interposed between a source of air or fuel and includes an interior energy containing medium flow path60,61; 62,64; 78,80; 72,84in heat exchange relation with a reactant flow path56,58; 74,76together with a source46of water connected to the reactant flow path56;58; 74,76to be vaporized therein. The energy containing medium flow path60,61; 62,64; 78,80; 82,84is connected to one of the outlets16,18to receive a heated fluid therefrom to provide the heat of vaporization to the aqueous material.

REFERENCES:
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patent: 6713204 (2004-03-01), Shimanuki et al.
patent: 2001/0021468 (2001-09-01), Kanai et al.
patent: 2002/0061426 (2002-05-01), Imaseki et al.
patent: WO 02/061867 (2002-08-01), None
Preliminary Search Report dated May 17, 2005.

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