Method and apparatus for operating a fuel cell system

Details Method and apparatus for operating a fuel cell system Method and apparatus for operating a fuel cell system

2005-08-30

2005-08-30

Alejandro, Raymond (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

C429S006000

Reexamination Certificate

active

06936360

ABSTRACT:
Method and apparatus for changing the state of operation of a fuel cell, such as starting the fuel cell up or shutting the fuel cell down, are disclosed. An idle load is applied to the fuel cell when the cell temperature is between about normal operating temperature and a transition temperature, and fuel and oxidizer are supplied to the fuel cell commensurate with the power delivered to the idle load. Below the transition temperature, purging/passivation procedures known in the art can be followed, and an open or dummy load applied to the fuel cell. At normal operating temperature or above a service load is applied to the fuel cell.

REFERENCES:
patent: 4769297 (1988-09-01), Reiser et al.
patent: 4859545 (1989-08-01), Scheffler et al.
patent: 5045414 (1991-09-01), Bushnell et al.
patent: 5064732 (1991-11-01), Meyer
patent: 5503944 (1996-04-01), Meyer et al.
patent: 5700595 (1997-12-01), Reiser
patent: 6083636 (2000-07-01), Hsu

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