FLAME HEATED THERMIONIC CONVERTER RESEARCH

Abstract

The 150 W(e) electrically heated diode developed a Cs leak in the seal insulator. However, before the Cs exhausted, some data were obtained defining the necessary operating parameters for a triggered diode power inversion system. Four flame-heated thermionic converters are being constructed. The heater for these converters was tested. An emitter temperature of 1450 C was attained, along with a heat flux of 28 w/sq cm. An analysis of possible efficiencies for diode heaters emphasized that heaters employing fuel injection, in combination with high efficiency heat exchanger, must eventually be developed. Testing of Durak-B coating for Mo metal continued. Analysis of results showed that the coating fails due to depletion of Si. Si may evaporate as SiO2 or diffuse into the Mo metal. Flame corrosion tests on SiC refractories showed the superiority of KT SiC.

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Document Details

Document Type
Technical Report
Publication Date
Mar 31, 1962
Accession Number
AD0281819

Entities

People

  • E. V. Clark
  • R. L. Mckisson
  • W. R. Martini

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Human Systems

DTIC Thesaurus Topics

  • Ceramic Materials
  • Combustion
  • Combustion Chambers
  • Construction
  • Converters
  • Critical Temperature
  • Efficiency
  • Energy
  • Fuel Injection
  • Heat Energy
  • Heat Exchangers
  • Heat Transfer
  • Ignition
  • Materials
  • Silicon Carbide
  • Test And Evaluation
  • Thermionic Converters

Readers

  • Electronics Engineering
  • Thermal Physics or Thermal Science.
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene