Space nuclear power supply apparatus based on thermoacoustic and thermoelectric effects

Abstract

The invention discloses space nuclear power supply apparatus based on thermoacoustic and thermoelectric effects. The apparatus comprises a pressure vessel, and a fuel used for a nuclear reaction is arranged in the pressure vessel; the apparatus further comprises thermoacoustic and thermoelectric devices and a heat output device; and the thermoacoustic and thermoelectric devices comprise a resonance hollow cavity, a porous electrode plate, a porous medium and a heat-conducting electrode plate which are arranged in sequence from the bottom to the top, the porous medium is arranged on the pressure vessel in a passing manner, the resonance hollow cavity and the porous electrode plate are placed in the pressure vessel, the heat output device is arranged on the heat-conducting electrode plate, and the heat output device is provided with a radiation radiator. The apparatus disclosed by the invention firstly converts heat of a reactor core into high-frequency pulse thermal oscillation waves according to the thermoacoustic effect, the thermal oscillation waves act on the hot side of a thermoelectric material at extremely-fast frequency to realize a higher-efficiency transient thermoelectricconversion process, and the transient thermoelectric conversion process is a space nuclear power technology combining dynamic and static states, and has thermoelectric conversion efficiency higher than that of a current 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...

Images