Fuel cell system with recirculation system and purge valve

Details Fuel cell system with recirculation system and purge valve Fuel cell system with recirculation system and purge valve

2011-04-26

2011-04-26

Yuan, Dah-Wei D (Department: 1727)

Chemistry: electrical current producing apparatus, product, and

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

Process or means for control of operation

C429S431000

Reexamination Certificate

active

07931994

ABSTRACT:
A fuel cell system which includes: a fuel cell (1); a supply system (Sc) for supplying fuel gas to the fuel cell (1); a recirculation system (Rc) for recirculating unused fuel gas from the fuel cell (1), in which the fuel gas therein may contain nitrogen; a purge valve (8) for purging nitrogen contained in the fuel gas in the recirculation system (Rc); and a controller (100) for adjusting a valve opening of the purge valve (8) so that a nitrogen concentration of the fuel gas in the recirculation system (Rc) is kept constant.

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