Cascaded fuel cell stack operation with anode gas recirculation

A device and method to regulate humidification in a cascaded fuel cell stack. The cascaded fuel cell stack includes individual fuel cells placed together in multiple groups. A recirculation loop is fluidly coupled to an anode flowpath to permit the recirculation of hydrogen or a related fuel. A cont...

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Bibliographische Detailangaben
1. Verfasser:	LOGAN VICTOR W
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	A device and method to regulate humidification in a cascaded fuel cell stack. The cascaded fuel cell stack includes individual fuel cells placed together in multiple groups. A recirculation loop is fluidly coupled to an anode flowpath to permit the recirculation of hydrogen or a related fuel. A controller and one or more sensors and flow manipulation devices cooperate with one another to selectively increase or decrease the flow of reactant in the recirculation loop in order to manage water levels in one or more of the anode, cathode or electrolyte layer disposed between the anode and cathode.