SYSTEM OF FUEL CELLS WITH DEVICE FOR PRELIMINARY HEATING OF SUPPLY CATHODE AIR

摘要

The invention relates to a system (10) of fuel cells with a first heat exchanger (12), through which the supply cathode air is supplied to the fuel cell or to the stack (14) of fuel cells and to which a mixture of the exhaust gas of the afterburner (16) and the exhaust cathode air formed in a fuel cell or stack (14) of fuel cells in order to provide heat exchange between the supply cathode air and the mixture with the help of the first heat exchanger (12). According to the invention, a second heat exchanger (18) is provided in the system, through which the supply cathode air from the first heat exchanger (12) is supplied to the fuel cell or to the stack (14) of fuel cells and through which the exhaust gas of the afterburner (16) is supplied to the first heat exchanger to create a mixture (12) in order to provide heat exchange between the exhaust gas of the afterburner and the supply cathode air by means of the second heat exchanger (18).