Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Reexamination Certificate
2005-03-05
2008-08-12
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
C429S010000, C429S006000
Reexamination Certificate
active
07410712
ABSTRACT:
A procedure for starting up a fuel cell system that is disconnected from its primary load and has both its cathode and anode flow fields filled with air includes initiating a flow of air through the cathode flow field and rapidly displacing the air in the anode flow field by delivering a flow of fresh hydrogen containing fuel into the anode flow field, and thereafter connecting the primary load across the cell. Sufficiently fast purging of the anode flow field with hydrogen prior to connecting the cells to the load eliminates the need for purging the anode flow field with an inert gas, such as nitrogen, upon start-up.
REFERENCES:
patent: 2002/0076583 (2002-06-01), Reiser et al.
patent: 2002/0098393 (2002-07-01), Dine et al.
patent: 2002/0182456 (2002-12-01), Condit et al.
patent: 2003/0072978 (2003-04-01), Meyer et al.
patent: 2003/0087138 (2003-05-01), Margiott et al.
patent: 2003/0134164 (2003-07-01), Reiser et al.
patent: 2004/0001980 (2004-01-01), Balliet et al.
Reiser Carl A.
Sawyer Richard D.
Yang Deliang
Chu Helen
Ryan Patrick
UTC Power Corporation
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