The fuel cell development of systems with a higher capacity was mainly targeted on stationary and automotive markets. The development of fuel cell applications in aircrafts started recently however the fuel cells served as a power generation technology in the space application for the first time more than 120 years after its invention. The maritime fuel call application onboard of submarines is already commercialised but as a very specific solution only. Lightweight is a dominant issue in aircraft, which means also high power density. From the different types and geometries of SOFCs under development at present thin anode or substrate based cells and - perhaps in the long run micro tubular cells - show the highest potential to meet the demands. Concerning substrate based cells there exists a project headed by industry devoted for car APUs, which could be the starting point for an aircraft suited version. With this project a special ferritic steel alloy is used for the frame, the interconnects and the cell substrate of this principally cheap planar cells, designed for operation temperatures about and below 800 deg C. This is also the temperature range of the required kerosene reformer. The qualification of this cell type together with a light-weight reformer and micro gas turbine, fed by the exhaust of the SOFC, will be the central technical task in next years. The micro gas turbine is needed to run a compressor for the air feed of the cells at high cruising altitudes, where the oxygen partial pressure only amounts to about 20 % of sea level conditions. The design specifications of the aircraft application covers the specifications of a high number of other applications as well. Thus there is a good option that the aircraft application of fuel cells may become a technology driver for the fuel cell development.


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    Titel :

    Fuel cells in aircraft and synergies


    Weitere Titelangaben:

    Brennstoffzellen im Flugzeug und Synergien


    Beteiligte:


    Erscheinungsdatum :

    2004


    Format / Umfang :

    26 Seiten, 24 Bilder, 1 Tabelle, 25 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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