METHOD AND ARRANGEMENT FOR AVOIDING ANODE OXIDATION

摘要

The focus of the invention is a cooling arrangement for high temperature fuel cell system for substantially reducing the amount of purge gas in a system shutdown situation, each fuel cell in the fuel cell system comprising an anode side (100), a cathode side (102), and an electrolyte (104) between the anode side and the cathode side, and the fuel cell system comprising the fuel cells in fuel cell stacks (103). The cooling arrangement comprises: a coolant source (120) capable of providing coolant to be used in a cooling process of the high temperature fuel cell system during the system shutdown situation, a cooling structure (122) in connection to the coolant source (120) and arranged essentially in a thermal effect area of the fuel cell stacks (103) for receiving heat from the fuel cell stacks at least by radiation and transferring received heat to the coolant, means (124) for feeding said coolant into the cooling structure (122) from the coolant source (120), means (126) for exhausting used coolant from the cooling structure, and means (136) for utilizing a triggering force to trigger a coolant flow in the cooling structure, when the system shutdown situation has started.