Heat exchange – Flow passages for two confined fluids – Interdigitated plural first and plural second fluid passages
Reexamination Certificate
2005-07-26
2005-07-26
Walberg, Teresa J. (Department: 3753)
Heat exchange
Flow passages for two confined fluids
Interdigitated plural first and plural second fluid passages
Reexamination Certificate
active
06920920
ABSTRACT:
A heat exchanger is made from a single piece of metal foil. The foil is coated with catalyst, corrugated with herringbone or skew corrugations, except along narrow flat areas near its edges, and folded back and forth upon itself. The folded metal structure is blocked off, except at regions near the flat areas, and enclosed in a container. A first gas stream flows into one set of folds, in a path which includes the flat areas and the channels formed by the corrugations. A second gas stream similarly flows into the other set of folds. The two streams are in thermal contact, but do not mix. The heat exchanger is especially useful in operating a catalytic fuel reformer, or in other applications involving catalytic processes. Alternative embodiments use straight corrugations to create straight channels that minimize the pressure drop through the heat exchanger.
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Catacel Corporation
Eilberg William H.
Walberg Teresa J.
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