A hydrogen supply passage (12) supplies hydrogen to a fuel cell stack (1) of a fuel cell power plant. Anode effluent discharged from the fuel cell stack (1) is recirculated into the hydrogen supply passage (12) through a recirculation passage (5B ). An ejector (6) provided in the hydrogen supply passage...http://www.google.co.uk/patents/US6800390?utm_source=gb-gplus-sharePatent US6800390 - Fuel cell power plant
