Fuel cell system with flow field capable of removing liquid...

Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Means for distributing – storing – or preventing fluid movement

Reexamination Certificate

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C429S512000, C429S513000

Reexamination Certificate

active

08029942

ABSTRACT:
A fuel cell system having flow fields capable to operate like interdigitated flow fields, but in the same time allowing the removal of liquid water collected in the high-pressure channels, throughout individual exhaust passages. In a preferred embodiment, the channels follow radial-circumferential trajectories, each channel being provided with individual exhaust passages. In another preferred embodiment, each channel is provided with a valve control in both individual supply passages and individual exhaust passages allowing the system to operate alternatively as an interdigitated flow field as well as an open-channel flow field.

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Vladimir Gurau, Hongtan Liu, and Sadik Kakac, Dept. of Mechanical Engineering, University of Miami, Coral Gables, FL 33124; Nov. 1988 vol. 44, No. 11; pp. 2410 to 2422; AIChE Journal.

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