Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2005-04-26
2005-04-26
Bell, Bruce F. (Department: 1746)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S006000, C429S010000, C429S010000
Reexamination Certificate
active
06884533
ABSTRACT:
Systems and methods of controlling fuel cell electric power generation systems. In one embodiment, the control system comprises a current detector for measuring an output current of the fuel cell stack and generating a corresponding current signal, a flow detector for measuring a flow rate of a process gas stream and generating a corresponding flow rate signal, a sensor for measuring a concentration of a component of the reformate stream and generating a corresponding concentration signal, and a processor. The processor is configured to maintain hydrogen utilization in the fuel cell stack at about a user selectable value or within a user selectable range by generating an output signal as a function of the current signal, the flow rate signal and the first concentration signal. The output signal is employed in controlling a process variable impacting hydrogen utilization.
REFERENCES:
patent: 4904548 (1990-02-01), Tajima
patent: 5333591 (1994-08-01), Korsmeier et al.
patent: 5637414 (1997-06-01), Inoue et al.
patent: 5712052 (1998-01-01), Kawatsu
patent: 6083637 (2000-07-01), Walz et al.
patent: 6290913 (2001-09-01), Aoyama
patent: 6589679 (2003-07-01), Acker et al.
patent: 6632552 (2003-10-01), Yamanashi
patent: 6761988 (2004-07-01), Acker et al.
patent: 6777123 (2004-08-01), Okamoto
patent: 6783879 (2004-08-01), Skala et al.
patent: WO 0143216 (2001-06-01), None
English Abstract of JP2001325975, esp@cenet, http://ep.espacenet.com/, Nov. 22, 2001.
English Abstract of JP2001332284, esp@cenet, http://ep.espacenet.com/, Nov. 30, 2001.
Ballard Generation Systems
Bell Bruce F.
Seed IP Law Group PLLC
LandOfFree
Utilization based power plant control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Utilization based power plant control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Utilization based power plant control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3403116