Electron Temperature in the Interelectrode Gap of a Thermionic Energy Converter
https://doi.org/10.1134/S2304487X20060024
Abstract
A mathematical model of the temperature of electrons of a thermionic converter in an arc mode has been described. Since the physical processes in the arc operation mode of the thermionic converter some-times cannot be accurately described, it is proposed to use reasonable assumptions to analyze the operation of the converter. One of the main characteristics of a low-temperature plasma in the thermionic converter is the temperature of the electrons in the interelectrode gap. The temperature of electrons in the thermionic converter depends to varying degrees on the conditions for converting the thermal energy into the electrical energy, for example, on the interelectrode gap, cesium vapor pressure, and current in the thermionic converter. However, most of the plasma characteristics depend on the ionization and recombination of particles in the interelectrode gap. Approximations in the mathematical model of the thermionic converter are associated with the determination of the physical characteristics of a low-temperature plasma in the interelectrode gap. The dependence of the rate of formation of ions in the interelectrode space of the converter is assumed. The estimate of the formation rate of ions in the interelectrode gap makes it possible to determine the characteristics of thermionic energy conversion. The analysis of the characteristics of the thermionic converter allows the optimization of the design and its operation mode. The presented model makes it possible to obtain the parameters of the thermionic converter in the arc mode of operation.
About the Authors
A. V. Belkin
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
115409
Moscow
N. V. Schukin
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
115409
Moscow
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Review
For citations:
Belkin A.V., Schukin N.V. Electron Temperature in the Interelectrode Gap of a Thermionic Energy Converter. Vestnik natsional'nogo issledovatel'skogo yadernogo universiteta "MIFI". 2020;9(6):511-516. (In Russ.) https://doi.org/10.1134/S2304487X20060024
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