Convion Oy

Tero Hottinen

Kim Åström

Tuomas Hakala

Marko Laitinen

Timo Kivisaari

Kim Åströ

Timo Lehtinen

Jukka Göös

Kim ÅSTRÖM

A method to control the heat balance of fuel cell stacks in a fuel cell system, the fuel cell system including at least one fuel cell unit including fuel cell stacks, whose fuel cells include an anode side and a cathode side, as well as an electrolyte interposed therebetween, and a recuperator unit for heat exchange for preheating a supply flow of the cathode side. In the method, a desired portion is separated from the fuel exhaust flow coming from the anode side and adapted to be mixed with the cathode side exit flow before said recuperator unit. Also provided is a fuel cell system implementing the method.

Method and arrangement to control the heat balance of fuel cell stacks in a fuel cell system

A method and system are disclosed for reducing the consumption of safety gas in a fuel cell system having at least one fuel cell unit whose fuel cells include an anode side and a cathode side, as well as an electrolyte interposed therebetween. A supply is provided for supplying the anode with a safety gas, and an exhaust is provided for exhausting the fuel cell unit of a spent safety gas coming from the anode side. The method can adapt a specific percentage of the spent safety gas flow coming from the anode side of the fuel cells to be re-supplied into the anode side of the fuel cells.

Method and arrangement to reduce the consumption of safety gas in a fuel cell system

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Lohja, Finland

Tero Hottinen