A thermoacoustic three-phase AC power generation system driven by a dual-temperature heat source

Abstract

The invention discloses a thermoacoustic three-phase AC power generation system driven by a dual-temperature-position heat source, which includes a magnetic fluid power generation device and a thermoacoustic conversion device forming a loop. The liquid phase of the phase-change working medium is used as the working medium of the magnetic fluid power generation device, and the gas phase of the phase-change working medium is used as the working medium of the thermoacoustic conversion device; the magnetic fluid power generation device and the matching thermoacoustic conversion device are used as a loop unit, the thermoacoustic three-phase AC power generation system has at least two loop units, and the loop units communicate with each other and share the phase-change working medium. A certain amount of sound work is generated by the gas-liquid phase change thermoacoustic conversion mechanism, and then the sound work is amplified by the traveling wave thermoacoustic engine as the amplification stage. The difference in heating temperature between the medium-temperature heat exchanger and the high-temperature heat exchanger can realize the utilization of dual-temperature heat sources, drive the system to work, and improve the utilization rate of medium-low temperature and low-grade heat sources. There is a gas-liquid phase transition in the system, which has the ability of self-adaptive regulation.

Description

technical field [0001] The invention relates to a power generation system, in particular to a thermoacoustic three-phase AC power generation system driven by a dual-temperature-position heat source. Background technique [0002] The thermoacoustic engine has been a research hotspot in recent years due to its characteristics of no mechanical moving parts, simple structure, reliable operation and long life. The prototype of traveling wave thermoacoustic engine appeared as early as more than 200 years ago, but due to the low acoustic reactance at the regenerator and the high working vibration velocity, serious viscous loss was caused, which limited the engine efficiency. The performance of the thermoacoustic Stirling engine proposed by Backhaus and Swift of the North Alamos National Laboratory in the United States has been significantly improved, but the resonant tube of the standing wave is still the main part, and its size is usually large. The dimension is about 4m-10m, and...

AI Technical Summary

Problems solved by technology

Thermal power generation still occupies a considerable proportion in today's electricity production, but because thermal power generation needs to be converted by burning fossil fuels first, there are many intermediate links, the conversion efficiency is low, and a large amount of harmful gases are emitted during the process, causing environmental pollution

There are many high-temperature processes in industrial enterprises, and a large amount of waste heat remains after the production process is completed. These waste heat cannot be effectively used, which is low-grade energy.

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