(DE4425186-C1)      The stack of fuel cells (10) are arranged inside a protective housing (2) that has sealed inlets for anode fuel gas (5) and cathode fuel gas (7) and outlets for burnt anode (6) and cathode (8) gases. These gases are circulated within the protective housing (2). The circulating used cathode and anode gases combine in a mixing zone (9) and are directed to a fan (4) which blows them, along with fresh air, through a catalytic burner and heat exchanger (3) that burns the remaining fuel. The surplus gas is then removed by an exhaust flap.    ADVANTAGE -   Reduced need for electrical insulation, simplified piping giving low hydrodynamic resistance and minimum loss, low temperature differences and heat-stress.    (JP9511612-W)      The stack of fuel cells (10) are arranged inside a protective housing (2) that has sealed inlets for anode fuel gas (5) and cathode fuel gas (7) and outlets for burnt anode (6) and cathode (8) gases. These gases are circulated within the protective housing (2). The circulating used cathode and anode gases combine in a mixing zone (9) and are directed to a fan (4) which blows them, along with fresh air, through a catalytic burner and heat exchanger (3) that burns the remaining fuel. The surplus gas is then removed by an exhaust flap.    ADVANTAGE -   Reduced need for electrical insulation, simplified piping giving low hydrodynamic resistance and minimum loss, low temperature differences and heat-stress.    (EP771477-B1)      The stack of fuel cells (10) are arranged inside a protective housing (2) that has sealed inlets for anode fuel gas (5) and cathode fuel gas (7) and outlets for burnt anode (6) and cathode (8) gases. These gases are circulated within the protective housing (2). The circulating used cathode and anode gases combine in a mixing zone (9) and are directed to a fan (4) which blows them, along with fresh air, through a catalytic burner and heat exchanger (3) that burns the remaining fuel. The surplus gas is then removed by an exhaust flap.    ADVANTAGE -   Reduced need for electrical insulation, simplified piping giving low hydrodynamic resistance and minimum loss, low temperature differences and heat-stress.    (US5856034-A)      The stack of fuel cells (10) are arranged inside a protective housing (2) that has sealed inlets for anode fuel gas (5) and cathode fuel gas (7) and outlets for burnt anode (6) and cathode (8) gases. These gases are circulated within the protective housing (2). The circulating used cathode and anode gases combine in a mixing zone (9) and are directed to a fan (4) which blows them, along with fresh air, through a catalytic burner and heat exchanger (3) that burns the remaining fuel. The surplus gas is then removed by an exhaust flap.    ADVANTAGE -   Reduced need for electrical insulation, simplified piping giving low hydrodynamic resistance and minimum loss, low temperature differences and heat-stress.    (JP3041048-B2)      The stack of fuel cells (10) are arranged inside a protective housing (2) that has sealed inlets for anode fuel gas (5) and cathode fuel gas (7) and outlets for burnt anode (6) and cathode (8) gases. These gases are circulated within the protective housing (2). The circulating used cathode and anode gases combine in a mixing zone (9) and are directed to a fan (4) which blows them, along with fresh air, through a catalytic burner and heat exchanger (3) that burns the remaining fuel. The surplus gas is then removed by an exhaust flap.    ADVANTAGE -   Reduced need for electrical insulation, simplified piping giving low hydrodynamic resistance and minimum loss, low temperature differences and heat-stress.