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Fuel-cell engine stream conditioning system

United States Patent

August 20, 2002
View the Complete Patent at the US Patent & Trademark Office
A stream conditioning system for a fuel cell gas management system or fuel cell engine. The stream conditioning system manages species potential in at least one fuel cell reactant stream. A species transfer device is located in the path of at least one reactant stream of a fuel cell's inlet or outlet, which transfer device conditions that stream to improve the efficiency of the fuel cell. The species transfer device incorporates an exchange media and a sorbent. The fuel cell gas management system can include a cathode loop with the stream conditioning system transferring latent and sensible heat from an exhaust stream to the cathode inlet stream of the fuel cell; an anode humidity retention system for maintaining the total enthalpy of the anode stream exiting the fuel cell related to the total enthalpy of the anode inlet stream; and a cooling water management system having segregated deionized water and cooling water loops interconnected by means of a brazed plate heat exchanger.
DuBose; Ronald Arthur (Marietta, GA)
Emprise Technology Associates Corp. (Marietta, GA)
09/ 447,764
November 23, 1999
This Invention was made with Government support under Contract No. DE-AC02-94CE50390 awarded by the Department of Energy. The Government has certain rights in this invention.