Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Reexamination Certificate
2005-04-26
2005-04-26
Kalafut, Stephen (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
C429S010000, C429S006000, C429S006000, C417S065000
Reexamination Certificate
active
06884528
ABSTRACT:
A fuel cell system and process using an organic Rankine cycle to produce shaft work to operate a fuel cell system component such as an air compressor. The air compressor delivers compressed air to a fuel cell stack. The steps of the Rankine cycle include pumping a liquid working fluid to an elevated pressure, heating the fluid to a gas, expanding the high temperature and high-pressure gas through an expander to produce shaft work used to drive a fuel cell system component such as an air compressor, and then removing energy from the cooling fluid to change the gas back to a liquid, and repeating the cycle. The liquid fluid can be heated by an external boiler, or one of the components of the fuel cell system such as the combustor and/or the fuel cell stack.
REFERENCES:
patent: 4820594 (1989-04-01), Sugita et al.
patent: 6348278 (2002-02-01), LaPierre et al.
patent: 6365289 (2002-04-01), Lee et al.
Lee James H.
Siepierski James S.
Woody George R.
Alejandro Raymond
Brooks Cary W.
General Motors Corporation
Kalafut Stephen
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