METHOD AND ARRANGEMENT TO REDUCE THE CONSUMPTION OF SAFETY GAS IN A FUEL CELL SYSTEM

摘要

The invention relates to a method to reduce the consumption of safety gas in a fuel cell system (1), said fuel cell system (1) comprising at least one fuel cell unit (5) whose fuel cells (2) include an anode side (7) and a cathode side (8), as well as an electrolyte (9) interposed therebetween, means (10) for supplying the anode (7) with a safety gas, and means (11) for exhausting the fuel cell unit (5) of a spent safety gas coming from the anode side (7). The method comprises adapting a specific percentage of the spent safety gas flow coming from the anode side (7) of the fuel cells (2) to be re-supplied into the anode side (7) of the fuel cells (2). The invention relates also to a fuel cell system implementing the method.