Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Process or means for control of operation
Reexamination Certificate
2011-01-25
2011-01-25
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Process or means for control of operation
C429S414000, C429S440000
Reexamination Certificate
active
07875400
ABSTRACT:
A fuel cell system having internal pushback of water, with a compact, thermally integrated enthalpy exchanger enabling effective hydration control in a small fuel cell system is provided. The enthalpy exchanger provides for the moisture in the fuel cell effluent to be used to humidify the incoming air stream to allow the fuel cell to be operated at higher temperatures while avoiding dry out. The enthalpy exchanger includes a moisture permeable membrane which collects moisture from the exhaust flow and makes this moisture available to an incoming air stream, thus humidifying the incoming air stream. In addition, the waste heat from the fuel cell reactions is transferred to the incoming air stream. The exhaust stream from the anode can also be used to provide additional moisture and heat to the enthalpy exchanger to be added to the incoming air stream. A water separator is also provided in one embodiment.
REFERENCES:
patent: 5432020 (1995-07-01), Fleck
patent: 5759712 (1998-06-01), Hockaday
patent: 6106964 (2000-08-01), Voss et al.
patent: 6458479 (2002-10-01), Ren et al.
patent: 6696192 (2004-02-01), Kanai et al.
patent: 6759154 (2004-07-01), O'Brien
patent: 6864005 (2005-03-01), Mossman
patent: 6989206 (2006-01-01), Drake
patent: 2004/0209133 (2004-10-01), Hirsch
patent: 2004/0209136 (2004-10-01), Ren et al.
patent: 2004/0209154 (2004-10-01), Ren et al.
patent: 2005/0287416 (2005-12-01), Ikezoe
patent: 2007/0184336 (2007-08-01), Kim et al.
patent: 2010/0124677 (2010-05-01), Leach
patent: 2010/0124683 (2010-05-01), Carlstrom, Jr.
patent: 1612875 (2006-04-01), None
patent: 100659132 (2006-12-01), None
PCT Search Report for Application No. PCT/US2008/002913, mail date Aug. 19, 2008, 6 pages.
Carlstrom, Jr. Charles M.
DeAngelis David
Leach David H.
Marvin Russ
Schick Louis
Cesari and McKenna LLP
MTI Microfuel Cells Inc.
Parsons Thomas H.
Ryan Patrick
LandOfFree
Method and apparatus for internal hydration of a fuel cell... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for internal hydration of a fuel cell..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for internal hydration of a fuel cell... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2638971