Investigation of the high-voltage plasma thermionic diode electric power dependence on the thermophysical parameters and the type of working fluid
Authors: Antsiferov D.A., Onufriev V.V., Onufrieva E.V.
Published in issue: #9(129)/2022
DOI: 10.18698/2308-6033-2022-9-2210
Category: Aviation and Rocket-Space Engineering | Chapter: Thermal, Electric Jet Engines, and Power Plants of Aircrafts
Design and development of high-temperature current conversion systems based on the plasma power engineering devices, such as, for example, grid key elements and high-voltage plasma thermionic diodes (HPTD), is an urgent task and is connected to development of the high-power nuclear propulsion systems for spacecraft. The paper presents results of studying the HPTD specific electric power dependence on the thermophysical parameters of the interelectrode gap filler, i.e. on its temperature and pressure. Besides, dependence of the HPTD power was demonstrated on the materials used in the electrodes manufacture. HPTD specific electrical power dependences were obtained, as a function of temperature (anode and emitter) and vapor pressure of cesium and binary mixture. Expediency of using the HPTD binary filler with the tungsten emitter to increase its specific electric power was shown.
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