Abstract
Thermoelectric conversion system, as one of the keys of space nuclear power supply system, is of great significance to the development and application of space nuclear power source. Thermion thermoelectric conversion system is a kind of thermoelectric conversion technology with potential for development, it has simple equipment and compact structure, but its conversion efficiency is limited by the inherent characteristics of the heat ion Energy converter, in order to improve the conversion efficiency of the thermionic energy converter, the thermionic energy converter and thermoelectric generator are coupled. In this paper, the thermionic-thermoelectric generator is taken as the research object, and the thermodynamic analysis and calculation of the thermionic-thermoelectric generator model is carried out by using the existing formula, on the basis of which the appropriate parameters are selected to optimize the system performance.
Highlights
Space nuclear power is very important for deep space exploration, and the thermoelectric conversion efficiency of space nuclear power devices has a very important impact on the whole system
Thermion thermoelectric conversion is a kind of static thermoelectric convention device that can conveniently convert the heat energy at relatively high temperatures into electricity (Yarygin, 2012)
Only thermionic conversion and temperature difference conversion are used in nuclear power plants
Summary
Space nuclear power is very important for deep space exploration, and the thermoelectric conversion efficiency of space nuclear power devices has a very important impact on the whole system. Thermion thermoelectric conversion is a kind of static thermoelectric convention device that can conveniently convert the heat energy at relatively high temperatures into electricity (Yarygin, 2012). Space Nuclear Power Thermoelectric Conversion energy conversion efficiency of thermion conversion is closely dependent on the materials of the cathode working at higher temperatures and the space charge effect (Bellucci et al, 2016). The research has reference value for space nuclear power thermionic conversion (El-Genk et al, 1993).
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