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A device for producing water on board an aircraft includes at least one high temperature fuel cell entirely or partially integrated into a combustion chamber arrangement of a gas turbine aircraft engine. The combination of at least one fuel cell and a gas turbine engine is adapted to operate exclusi

A device for producing water on board an aircraft includes at least one high temperature fuel cell entirely or partially integrated into a combustion chamber arrangement of a gas turbine aircraft engine. The combination of at least one fuel cell and a gas turbine engine is adapted to operate exclusively with hydrogen and atmospheric oxygen, and is embodied in an aircraft propulsion engine and/or an auxiliary power unit used for producing compressed air for a cabin and a power supply of the aircraft. The at least one high temperature fuel cell is fed with pure hydrogen on an anode side and with air on a cathode side. The combustion chambers of the turbine engine are fed with an air-hydrogen mixture, whereby at least the hydrogen supply can be regulated or completely shut off.

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The invention claimed is: 1. An apparatus for producing water on board of an aircraft while using one or more fuel cells, comprising at least one high temperature fuel cell that has an anode side and a cathode side and that is integrated into a heat-producing arrangement of an aircraft engine, wher

The invention claimed is: 1. An apparatus for producing water on board of an aircraft while using one or more fuel cells, comprising at least one high temperature fuel cell that has an anode side and a cathode side and that is integrated into a heat-producing arrangement of an aircraft engine, wherein the heat-producing arrangement optionally additionally includes at least one combustion chamber, wherein the high temperature fuel cell is adapted to carry out a fuel cell process and the optional combustion chamber is adapted to carry out a combustion process, characterized in that: the high temperature fuel cell is an oxide ceramic fuel cell (SOFC - solid oxide fuel cell), or a molten carbonate fuel cell (MCFC), or a fuel cell that has a power and temperature level equivalent to an oxide ceramic fuel cell or a molten carbonate fuel cell; the apparatus includes a hydrogen supply that comprises a source of liquid or gaseous hydrogen and that is arranged and adapted to supply pure hydrogen to the anode side of said high temperature fuel cell; an air intake is arranged and adapted to supply air to the cathode side of said high temperature fuel cell; the hydrogen supply and the air intake are further arranged and adapted to supply a mixture of hydrogen and air to the combustion chamber; at least the hydrogen supply is constructed for a closed loop control or can be shut off completely; the apparatus further includes a liquid hydrogen evaporator positioned upstream of the high temperature fuel cell or the combustion chamber; and the apparatus further includes a single stage or multistage turbine (16) connected downstream of the anode side of the high temperature fuel cell, said turbine adapted to convert thermal energy of anode exhaust gas (35) into rotation energy. 2. The apparatus of claim 1, characterized in that the conversion of the thermal energy takes place by a Stirling motor and/or by one or more combinations of different thermal engines, for example a turbine and a Stirling motor. 3. The apparatus of claim 1, comprising a compressor (13) and means for supplying gained mechanical energy to said compressor. 4. The apparatus of claim 3, wherein said compressor is used for charging said anode side of said high temperature fuel cell (7) with hydrogen (15) under pressure. 5. The apparatus of claim 1, further comprising a condensation process (18) connected downstream of said high temperature fuel cell or high temperature fuel cells (7), said condensation process condensing water out of a portion of anode exhaust gas (35) of said fuel cell (7). 6. The apparatus of claim 1, wherein said high temperature fuel cell is constructed for pressurizing the air or oxygen side, and the fuel or hydrogen side, whereby equal or different pressures are permissible on the anode side and on the cathode side. 7. The apparatus of claim 1, further comprising an anode exhaust gas condenser (18) and wherein said evaporator (17) is constructed to be operable by process heat of said anode exhaust gas condenser (18). 8. The apparatus of claim 7, wherein said evaporator (17) is constructed as a pipe bundle heat exchanger which is arranged as a ring shape around said condenser (18) or circularly within said condenser (18). 9. The apparatus of claim 7, wherein at least a portion of said condenser (18) is operable with cooling air (19). 10. The apparatus of claim 1, wherein produced steam is blown in upstream of a second turbine stage (9) of said multistage turbine where said steam is mixed with cathode exhaust air. 11. The apparatus of claim 5, further comprising means for withdrawing water of distilled quality from the condensation process (18) and for distributing said distilled quality water, a salination station (43) for adding a dose of salt to produce drinking water for galleys, hand wash basins and showers and for supplying distilled water to toilets and humidifiers. 12. The apparatus of claim 1, wherein said multistage turbine comprises turbine stages (8, 9) for driving compressor stages (5, 6) and a fan (11), and wherein the compressor stages (5, 6) pressurize an air side of said high temperature fuel cell (7) and of said combustion chamber (7A). 13. The apparatus of claim 12, wherein an air throughput (3) of said fan (11) is used either in an engine for propulsion or in an APU for pressurization of pressurized air systems and/or of an air conditioning system. 14. The apparatus of claim 12, wherein said fan (11) is coupled with a first compressor stage (6) and with the second turbine stage (9), and wherein a second compressor stage (6) and the first turbine stage (8) are coupled with each other and run on coaxial shafts with different revolutions per minutes. 15. The apparatus of claim 14, wherein the number of coupled compressor stages and turbine stages, the direction of rotation of these stages, and the number of coaxial shafts rotating one within the other are constructed at discretion. 16. The apparatus of claim 1, constructed for being operable without supplying water to a water system. 17. The apparatus of claim 1, wherein said at least one combustion chamber and said at least one high temperature fuel cell are operable separately and in any desired combination. 18. The apparatus of claim 1, wherein individual combustion chambers or high temperature fuel cells are adapted to be switched off for a separate operation of combustion chambers or high temperature fuel cells. 19. An apparatus for producing water on board of an aircraft while using one or more fuel cells, comprising at least one high temperature fuel cell that has an anode side and a cathode side and that is integrated into a heat-producing arrangement of an aircraft engine, wherein the heat-producing arrangement optionally additionally includes at least one combustion chamber, wherein the high temperature fuel cell is adapted to carry out a fuel cell process and the optional combustion chamber is adapted to carry out a combustion process, characterized in that: the high temperature fuel cell is an oxide ceramic fuel cell (SOFC - solid oxide fuel cell), or a molten carbonate fuel cell (MCFC), or a fuel cell that has a power and temperature level equivalent to an oxide ceramic fuel cell or a molten carbonate fuel cell; the apparatus includes a hydrogen supply that is arranged and adapted to supply pure hydrogen to the anode side of said high temperature fuel cell; an air intake is arranged and adapted to supply air to the cathode side of said high temperature fuel cell; the hydrogen supply and the air intake are further arranged and adapted to supply a mixture of hydrogen and air to the combustion chamber; at least the hydrogen supply is constructed for a closed loop control or can be shut off completely; the apparatus further includes a single stage or multistage turbine (16) connected downstream of the anode side of the high temperature fuel cell, said turbine adapted to convert thermal energy of anode exhaust gas (35) into rotation energy; and the apparatus further includes a gray water evaporator (33) arranged and adapted so that air (20) heated in a condensation process is used for evaporating gray water in said gray water evaporator, a pump (45) arranged for feeding said gray water into said gray water evaporator (33), and a filter arranged for retaining solid and suspended matter out of said gray water. 20. The apparatus of claim 19, further comprising a gray water collection tank (32) for collecting used water and unneeded condensate as the gray water. 21. The apparatus of claim 20, further comprising a waste water collection tank (28) adapted to collect waste water, and a dehydrator (30) adapted to completely or partially dehydrate said waste water and a thus-gained water portion is fed into the gray water collection tank (32). 22. The apparatus of claim 19, wherein any germs and microorganisms present in the gray water (32) are thermally killed.