Patent ID: 8062804

Claim:
A fuel cell system for use with a fuel supply, said fuel cell system comprising: a fuel cell comprising at least one fuel cell and including an anode side and a cathode side; a fuel inlet for receiving fuel from a fuel supply to supply said fuel to said anode side; a flow control assembly including: a sensor for sensing hydrogen concentration in one of anode exhaust leaving said anode side of said fuel cell and a gas derived from said anode exhaust, a fuel flow control assembly for controlling flow of said fuel to said anode side of said fuel cell system based on said hydrogen concentration sensed by said sensor; and a cooling assembly adapted to receive a predetermined portion of said anode exhaust from said anode side and to transfer water in said predetermined portion of said anode exhaust to output separated water and separated anode exhaust, wherein said sensor senses hydrogen concentration in said gas derived from said anode exhaust, said gas derived from said anode exhaust comprising said separated anode exhaust.