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Zhou D.,California State University, Sacramento | Dabel J.W.,Altergy Systems
International Review of Mechanical Engineering | Year: 2010

This work studied a self-hydrating, proton exchange membrane (PEM) fuel cell system with a coupled cathode air and cooling air supply. Coupling the cathode and cooling air supply simplifies the conventional fuel cell design with separate cathode air and cooling air supply. Mathematical models were developed to include fluid dynamics, heat and mass transfer, and electrochemical reactions in a PEM fuel cell and they were solved by using computational fluid dynamic (CFD) methods. The validation of the model for a coupled fuel cell design was performed through systematic parametric studies and comparison with available literature. Three-dimensional simulations and analysis showed that the self-hydrating, coupled cathode fuel cell design could achieve sufficient performance to justify the removal of costly supporting system components. Relationships between reactant flow rates, cell temperature, relative humidity, and membrane conductivity suggested that an additional performance improvement in current density and protonic conductivity could be achieved by placing an impermeable boundary between the porous transport layer and the gas channel on the cathode side of the cell to uncouple the cathode air from the cooling air in current fuel cell design. © 2010 Praise Worthy Prize S.r.l. - All rights reserved.


Trademark
Altergy Systems | Date: 2011-06-28

Electric power generation systems and fuel cell systems comprised of fuel cell stacks, power controllers, power converters, power conditioners, fuel cell membrane assemblies therefor, fuel processors and fuel reformers; energy storage devices, namely, batteries.


Trademark
Altergy Systems | Date: 2012-06-25

Fuel cells.


Trademark
Altergy Systems | Date: 2012-06-25

Fuel cells.


Trademark
Altergy Systems | Date: 2007-12-04

fuel cell systems, namely fuel cell stacks, fuel cell processors, fuel cell reformers, fuel cell controllers, fuel cell converters, fuel cell conditioners, and fuel cell membrane assemblies therefor.

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