METHOD AND APPARATUS FOR HUMIDIFICATION CONTROL OF AN ENERGY RECOVERY DEVICE IN A FUEL CELL POWER PLANT

WIPO Patent Application WO2005055334

A3

An arrangement is provided in a fuel cell power plant (10) for dispensing (58, 74, 60, 64) a liquid medium, such as water (66), into a process oxidant (air) stream (53) that flows through one gas channel (42) in an energy recovery device (ERD) (32). An exhaust gas stream (48) containing heat and moisture from the fuel cell (12) flows through another channel (44) in the ERD. An enthalpy exchange barrier (46) separates the one and the other gas channels, but allows mass and/or heat transfer therebetween. The water is injected into the air stream (53) in a controlled (70, 74) amount, and perhaps temperature (78), in response to sensed parameters (80, 84, 90) of the power plant, including the process air stream, to adjust one or more conditions in the power plant. Controlling ERD dryness, providing a defrost capability for the ERD, and/or preventing excessive water accumulation in the system are several of the conditions controlled.

JP5806862	Direct alcohol fuel cell system
JP5581537	A discharge head for fuel cells
JPH11185790	PORTABLE POWER SUPPLY CASE

NUTTALL BENJAMIN CHARLES (US)
DUFNER BRYAN F (US)
GRASSO ALBERT P (US)

PCT/US2004/038720

February 02, 2006

November 17, 2004

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UTC FUEL CELLS LLC (US)
NUTTALL BENJAMIN CHARLES (US)
DUFNER BRYAN F (US)
GRASSO ALBERT P (US)

H01M8/04; H01M; (IPC1-7): H01M8/04; H01M8/12; H01M2/00; H01M2/14; H01M8/00

US6274259B1	2001-08-14
US6007931A	1999-12-28
US6110613A	2000-08-29
US20020009625A1	2002-01-24
US6465118B1	2002-10-15
US6617065B2	2003-09-09
US20030049505A1	2003-03-13

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