High-Temperature Vapor-Filled Thermionic Converter

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Progress Development of a high temperature, vaporfilled thermionic converter for application with a nuclear reactor for space-vehicle electrical power generation is reported. Problems associated with the design and opera tion of a thermionic converter employing a UC-ZrC emitter, a cesium plasma for space charge neutralization, and a high-temperature collector are described. Emitter fabrication techniques are also described. A test cell employing a cylindrical UC-ZrC emitter, which was pressure bonded to a tantalum sleeve, and a low- temperature copper collector, was fabricated and operated for 400 hours to provide experimental data. The emitter was operated at temperatures of the order of ... continued below

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Campbell, A. E.; Carpenter, F. D.; Dunlay, J. B. & Pidd, R. W. February 15, 1962.

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Description

Progress Development of a high temperature, vaporfilled thermionic converter for application with a nuclear reactor for space-vehicle electrical power generation is reported. Problems associated with the design and opera tion of a thermionic converter employing a UC-ZrC emitter, a cesium plasma for space charge neutralization, and a high-temperature collector are described. Emitter fabrication techniques are also described. A test cell employing a cylindrical UC-ZrC emitter, which was pressure bonded to a tantalum sleeve, and a low- temperature copper collector, was fabricated and operated for 400 hours to provide experimental data. The emitter was operated at temperatures of the order of 2000 deg C while the collector temperature was maintained at 200 to 300 deg C. A conceptual design for a thermionic power reactor incorporating the thermionic converter under development is also studied. It was concluded that a thermionic fuel element would be about 20 inches long and 0.68 inch in diameter and would incorporate 1O thermionic cells. The load voltage per fuel element would be about 14.5 volts and two elements would be connected in parallel (electrically) to provide an output of 29 volts. The over-all design would provide an electrical power level of approximately one megawatt. (auth)

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  • Other Information: Orig. Receipt Date: 31-DEC-62

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  • Report No.: GA-2911
  • Report No.: ASD-TR-61-513(Pt.II)
  • Grant Number: AF 33(616)-7422
  • Office of Scientific & Technical Information Report Number: 4746918
  • Archival Resource Key: ark:/67531/metadc1032745

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • February 15, 1962

Added to The UNT Digital Library

  • Oct. 18, 2017, 7:39 a.m.

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  • Dec. 20, 2017, 1:26 p.m.

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Campbell, A. E.; Carpenter, F. D.; Dunlay, J. B. & Pidd, R. W. High-Temperature Vapor-Filled Thermionic Converter, report, February 15, 1962; San Diego, California. (digital.library.unt.edu/ark:/67531/metadc1032745/: accessed June 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.