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  • 1
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    AMTEC vapor-vapor series connected cells (1995)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: An alkali metal thermoelectric converter (AMTEC) having a plurality of cells structurally connected in series to form a septum dividing a plenum into two chambers, and electrically connected in series, is provided with porous metal anodes and porous metal cathodes in the cells. The cells may be planar or annular, and in either case a metal alkali vapor at a high temperature is provided to the plenum through one chamber on one side of the wall and returned to a vapor boiler after condensation at a chamber on the other side of the wall in the plenum. If the cells are annular, a heating core may be placed along the axis of the stacked cells. This arrangement of series-connected cells allows efficient generation of power at high voltage and low current.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Vapor-Exposure Cell For Testing Thin-Film Electrodes (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Vapor-exposure test cell (VETC) designed to be used in testing thin-film electrodes on solid electrolytes electrochemically at high temperature. Use of VETC much simpler and less expensive than testing alkali-metal thermal-to-electric converter (AMTEC) fuel cell, electrolysis cell, or other entire device containing solid electrolyte and electrodes of material and configuration to be characterized.
    Keywords: PHYSICAL SCIENCES
    Type: NPO-18620 , NASA Tech Briefs (ISSN 0145-319X); 17; 9; P. 80
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Series-Connected Vapor/Vapor AMTEC Cells (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Size and weight reduced; operating lifetime increased. Developmental alkali-metal thermal-to-electric converter (AMTEC) in which cells fed from common supply of high-pressure sodium vapor and connected electrically in series. No liquid sodium makes contact with any part of AMTEC cells. Sodium vapor supplied to solid electrolyte of each cell through porous metal anode on upstream side. Proposed design reduces need for high-temperature feedthroughs in that cells internally connected. Power withdrawn through feedthrough at lower temperature without significant thermal loss.
    Keywords: PHYSICAL SCIENCES
    Type: NPO-18667 , NASA Tech Briefs (ISSN 0145-319X); 17; 9; P. 78
    Format: text
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    NASA TECHNICAL REPORTS
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