Heat exchange – Conduit within – or conforming to – panel or wall structure
Patent
1996-03-22
2000-04-18
Leo, Leonard
Heat exchange
Conduit within, or conforming to, panel or wall structure
165171, 165905, 4282991, 428407, F28F 312
Patent
active
060503319
ABSTRACT:
The coolant plate component of a fuel cell assembly is formed from a plate made from graphite particles that are bonded together by a fluorocarbon polymer binder and which encapsulate a serpentine coolant circulation tube. The coolant plate component is non-porous. The graphite particles are preferably flakes which pack together very tightly, and require only a minor amount of the polymer binder to form a solid plate. The plate will provide enhanced heat transfer, will conduct electrons, and will block electrolyte migration from cell to cell in a fuel cell stack due to its construction. The composition of the plate is graded so as to provide a varied coefficient of thermal expansion as measured through the thickness of the plate so as to reduce thermal stresses imposed on the fuel cell stack. The coolant circulation tube has a roughened outer surface which enhances adhesion of the encapsulating graphite flake/binder mixture without inhibiting heat transfer.
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Breault Richard D.
Martin Ronald G.
O'Brien Joseph J.
Roche Robert P.
Scheffler Glen W.
International Fuel Cells L.L.C.
Jones William W.
Leo Leonard
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