COAXIAL FUEL CELL CATHODE FLOW PATH DUCTING

Aspects of duct systems for use with fuel cells and methods of using the same are disclosed. According to an aspect of the disclosure, a duct system () for cooling fuel cells () via a coolant fluid includes a housing (); a cooling chamber (); an inlet port () configured to receive the coolant into the system; an exhaust port () configured to expel the coolant from the system; and a means for moving the coolant into, through, and out of the system.