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Space nuclear power supply apparatus based on thermoacoustic and thermoelectric effects

A technology of thermoelectric effect and power supply device, applied in the direction of using thermoelectric element generators, nuclear power generation, reducing greenhouse gases, etc., can solve the problems of low thermoelectric conversion efficiency and achieve high-efficiency thermoelectric conversion and high thermoelectric conversion efficiency.

Active Publication Date: 2018-12-04
NO 719 RES INST CHINA SHIPBUILDING IND
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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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  • Space nuclear power supply apparatus based on thermoacoustic and thermoelectric effects

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Embodiment Construction

[0019] The invention provides a space nuclear power supply device based on thermoacoustic and thermoelectric effects. The purpose of the invention is to provide a device for improving the thermoelectric conversion efficiency of the space nuclear power device.

[0020] The technical feature of the present invention is: using thermoacoustic effect to convert nuclear fuel heat into high-temperature oscillating flow, and high frequency acting on thermoelectric device to realize transient thermoelectric conversion. The present invention is different from the technical path of thermoelectric conversion through steady-state heat conduction acting on thermoelectric materials in traditional space nuclear power sources, but allows heat to be converted into high-frequency pulsed thermal oscillation waves through the thermoacoustic effect first, and acts on porous materials at high frequencies For the electrode plate, due to the lag time in the porous medium, the thermoelectric conversion ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21D7/04
CPCG21D7/04Y02E30/00
Inventor 章先涛闻心怡陈刚彭晓钧蔡如桦徐广展刘婷
Owner NO 719 RES INST CHINA SHIPBUILDING IND
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