Vacuum tests of the Pluto-Express (PX), multitubes, vapor anode AMTEC cells are being performed at the Air Force Research Laboratory (AFRL) in Albuquerque, NM. Uncertainties associated with the different measurements performed in these tests are calculated. The uncertainty was the larger of ±1% or ±1.7 K in temperature measurements; ±1.2% in the electric power output, ±0.7% in the heat input, and ±6.5% in heat rejection. Another uncertainty associated with the measurements of the BASE tube and evaporator temperatures was due to the placement of the thermocouples (TCs) in the respective cavities. In order to quantify this uncertainty, a heat transfer model was developed, which coupled heat conduction in the TC guide tube to forced convection, due to the flow of sodium vapor, and thermal radiation to the walls of the evaporator and the BASE tube cavities. The model predictions were in good agreement with the TC readings in PX-cells, which were about 15–18 K and 4–47 K, higher, respectively, than they should be for the BASE tube and evaporator, respectively.


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    Titel :

    Experimental uncertainties in vacuum tests of PX-series AMTEC cells


    Beteiligte:
    Huang, Lianmin (Autor:in) / El-Genk, Mohamed S. (Autor:in) / El-Genk, Mohamed S. (Herausgeber:in) / Bragg, Mary J. (Herausgeber:in)

    Kongress:

    Space technology and applications international forum - 1998 ; 1998 ; Albuquerque,New Mexico (USA)


    Erschienen in:

    AIP Conference Proceedings ; 420 , 1 ; 1471-1478


    Erscheinungsdatum :

    15.01.1998


    Format / Umfang :

    8 pages





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Experimental Uncertainties in Vacuum Tests of PX-Series AMTEC Cells

    Huang, L. / El-Genk, M. S. / University of New Mexico; School of Engineering; Institute for Space and Nuclear Power Studies | British Library Conference Proceedings | 1998


    Impedance measurements on PX-Series AMTEC cells

    Mayberry,C.S. / Merrill,J. / Radzykewycz,D. et al. | Kraftfahrwesen | 1999


    Series-Connected Vapor/Vapor AMTEC Cells

    Underwood, Mark L. / Williams, Roger M. / Ryan, Margaret A. et al. | NTRS | 1993



    Impedance Measurements of PX-Series AMTEC Cells

    Mayberry, Clay S. / Radzykewycz, Dan / Merrill, John | SAE Technical Papers | 1999