Thermal ion conversion and Brayton cycle combined power generation reactor system

Abstract

The invention provides a thermal ion conversion and Brayton cycle combined power generation reactor system. The thermal ion conversion and Brayton cycle combined power generation reactor system comprises a thermal ion conversion module, an intermediate heat exchanger and a Brayton cycle module. A thermionic thermoelectric conversion element and an alkali metal heat pipe are arranged in the thermionic conversion module, and the thermionic conversion module is coated with a reflecting layer and a shielding layer; the Brayton energy conversion system is composed of a turbine, a heat regenerator,a precooler, a compressor and a generator. A through heat pipe is arranged between the thermionic conversion module and the intermediate heat exchanger; the part, in the thermionic conversion module,of the heat pipe is set as an evaporation section, and the part, in the intermediate heat exchanger, of the heat pipe is set as a condensation section; the inlet of the Brayton energy conversion system is connected with the shell side outlet of the intermediate heat exchanger; and the outlet of the Brayton energy conversion system is connected with the shell side inlet of the intermediate heat exchanger. The heat pipe cooling solid reactor core and the thermionic conversion and Brayton cycle combined power generation design are adopted, and multi-stage utilization of heat of nuclear fission energy is achieved.

Description

technical field [0001] The invention relates to a combined power generation reactor system of thermionic conversion and Brayton cycle, in particular to a nuclear reactor system for combined power generation of thermionic conversion and Brayton cycle, which can realize cascade utilization of energy, and belongs to the technical field of nuclear reactor engineering. Background technique [0002] Thermionic conversion is the direct conversion of thermal energy into electrical energy by using the phenomenon that metals emit electrons at high temperature. The thermionic energy conversion system can utilize different forms of heat sources such as solar energy, fossil energy, and nuclear energy. Related technologies have been applied to the Russian TOPAZ series of space reactors, which have fewer moving parts, good redundancy, small heat dissipation surface area, low mass-to-power ratio, and high Advantages such as large range. However, the thermoelectric conversion efficiency of ...

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Problems solved by technology

However, the thermoelectric conversion efficiency of the thermionic reactor is relatively low, and the conversion efficiency that can be realized in the current project is less than 15%. Therefore, a large amount of heat will be lost to the environment during the operation of the reactor, and the temperature at the receiving end of the thermionic thermoelectric conversion element is still as high as 1000K , this part of high-quality heat can be used as heat input for other energy conversion systems

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