Gas and liquid contact apparatus – With external supply or removal of heat – Heat exchange means at or downstream of contact zone
Reexamination Certificate
2005-03-29
2005-03-29
Bushey, Scott (Department: 1724)
Gas and liquid contact apparatus
With external supply or removal of heat
Heat exchange means at or downstream of contact zone
C261S016000, C261S099000, C261S156000
Reexamination Certificate
active
06871844
ABSTRACT:
A humidifier for fuel cells includes a housing with a heat-exchange plate formed therein, the plate defining first and second gas passages having gas inlets and outlets, respectively; a plurality of apertures formed on the plate; and a plurality of reservoirs fixed under the apertures and filled with a water absorbable and permeable stuffing material for trapping and storing water. The water permeable stuffing material may be disposed in the first gas passage. Cool, dry oxygen/air is channeled to the first gas passage and conveyed to an oxygen/air inlet of the fuel cell, and high-temperature, high-moisture exhaust gas discharged from the fuel cell is introduced to the second gas passage, such that water and heat of the exhaust gas in the second gas passage are recycled by the heat-exchange plate and conveyed to the first gas passage, thereby achieving the humidification effect and improving electricity-generating efficiency of the fuel cell.
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Chen Falin
Chu Hsin-Sen
Huang Jar-Lu
Tsay Keh-Chyun
Yan Yi-Yie
Arent & Fox PLLC
Bushey Scott
Industrial Technology Research Institute
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