A three cell conductively coupled thermionic fuel element (TFE) was assembled using a W-Sc 2 O 3 -W emitter trilayer, Ta intercell connectors and a Nb-Al 2 O 3 -Nb collector trilayer. An electric heater supplied heat through radiation to the fuel clad. Current-voltage (IV) characteristics were obtained at emitter temperatures from 1650 K to 1800 K. A comparison with IV curves calculated with TECMDL indicates that the emitter bare work functions were around 5.1 eV. The agreement between calculated and observed voltages demonstrates that the 3 cells were indeed in series, thereby validating the feasibility of the conductively coupled multi-cell TFE, which is applicable to both nuclear and solar space power sources.


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    Titel :

    Tests of a conductively coupled multi-cell thermionic fuel element


    Beteiligte:
    Desplat, Jean-Louis (Autor:in) / Streckert, Holger (Autor:in) / Tamoria, Thomas (Autor:in) / El-Genk, Mohamed S. (Herausgeber:in) / Bragg, Mary J. (Herausgeber:in)

    Kongress:

    Space Technology and Applications International Forum - 2001 ; 2001 ; Albuquerque, New Mexico


    Erschienen in:

    AIP Conference Proceedings ; 552 , 1 ; 1119-1124


    Erscheinungsdatum :

    02.02.2001


    Format / Umfang :

    6 pages





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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