A Space Nuclear Power Supply Device Based on Thermoacoustic and Thermoelectric Effects

Abstract

The invention discloses a space nuclear power supply device based on thermoacoustic and thermoelectric effects, which includes a pressure vessel in which fuel for nuclear reactions is arranged, a thermoacoustic and thermoelectric device and a heat output device, and a thermoacoustic and thermoelectric device , including a resonant cavity, a porous electrode plate, a porous medium and a thermally conductive electrode plate arranged in sequence from bottom to top, the porous medium is perforated on the pressure vessel, the resonant cavity and the porous electrode plate are placed in the pressure vessel, and the heat output device is set in On the heat conduction electrode plate, a radiation radiator is arranged on the heat output device. In the present invention, according to the thermoacoustic effect, the heat of the core is converted into a high-frequency pulse thermal oscillation wave, and the thermal oscillation wave acts on the hot side of the thermoelectric material at an extremely fast frequency to realize a more efficient transient thermoelectric conversion process, which is It is a space nuclear power technology combining dynamic and static, and the thermoelectric conversion efficiency is higher than that of the existing static thermoelectric conversion technology.

Description

technical field [0001] The invention relates to a nuclear power device, in particular to a space nuclear power source device based on thermoacoustic and thermoelectric effects. Background technique [0002] In the field of power generation equipment, there are two ways to convert thermal energy into electrical energy. One is to use the engine to generate electricity through thermal-mechanical-electrical methods. Because it has mechanical rotating parts, it is called dynamic conversion; the other is to convert thermal energy directly. The conversion into electrical energy does not require a generator and does not have any mechanical rotating parts, which is called static conversion. At present, land-based nuclear power plants generally adopt a dynamic conversion method. The final heat sink is a lake, river or sea, which has a high nuclear energy utilization efficiency. The thermal efficiency of existing large-scale nuclear power facilities is about 35%. However, limited by i...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is the problem of low thermoelectric conversion efficiency in existing space nuclear power static conversion devices

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