PEM fuel cell system with a porous hydrophobic gas venting...

Details PEM fuel cell system with a porous hydrophobic gas venting... PEM fuel cell system with a porous hydrophobic gas venting...

2006-12-16

2011-11-01

Gupta, Yogendra (Department: 1744)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

Process or means for control of operation

C429S433000, C429S434000, C429S450000, C429S535000

Reexamination Certificate

active

08048581

ABSTRACT:
A polymer electrolyte membrane (PEM) fuel cell power plant is cooled evaporatively with a water coolant system which does not permit liquid water to exit or flow through the coolant system. The coolant system utilizes a hydrophobic porous member (28) for venting gases such as fuel and/or air from a coolant water flow field in the system. Coolant water (36) is prevented from continuosly contacting the porous member during operation of the power plant thus preventing blockage of the porous member by coolant water or contaminants disposed in the coolant water.

REFERENCES:
patent: 6015634 (2000-01-01), Bonville et al.
patent: 2003/0232228 (2003-12-01), Grasso
patent: 2 837 025 (2003-09-01), None
patent: WO 0128016 (2001-04-01), None
patent: WO 2004/004046 (2004-01-01), None
patent: WO 2006/071580 (2006-07-01), None

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