Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2006-01-17
2006-01-17
Ryan, Patrick Joseph (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S006000, C429S006000, C429S010000
Reexamination Certificate
active
06986959
ABSTRACT:
A fuel cell power plant system includes the ability to operate an enthalpy recovery device even under cold conditions. A bypass arrangement allows for selectively bypassing one or more portions of the enthalpy recovery device under selected conditions. In one example, the enthalpy recovery device is completely bypassed under selected temperature conditions to allow the device to freeze and then later to be used under more favorable temperature conditions. In another example, the enthalpy recovery device is selectively bypassed during a system startup operation. One example includes a heater associated with the enthalpy recovery device. Another example includes preheating oxidant supplied to one portion of the enthalpy recovery device.
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Bludnicki Edward J.
Breault Richard D.
Clark Thomas M.
Grasso Albert P.
Margiott Paul R.
Carlson & Gaskey & Olds
Parsons Thomas H.
Ryan Patrick Joseph
UTC Fuel Cells LLC
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