Linear double-acting thermo-acoustic power generation system

Abstract

The invention provides a linear double-acting thermo-acoustic power generation system. The linear double-acting thermo-acoustic power generation system is composed of N thermo-acoustic engines and N-1 linear double-acting generators, wherein the thermo-acoustic engines and the linear double-acting generators are sequentially connected in series between the linear compressor and a linear generator at intervals. The linear compressor is arranged at the initial end of the system and the linear generator is arranged at the tail end of the system. The linear compressor and the linear generator are both work with a single piston. Two pistons of each linear double-acting generator can work at the same time. N is a positive integer ranging from 2 to 20. A resonant tube structure is removed in the system so that the empty size of the system is greatly reduced, power density is improved, and frequency characteristics of linear motors at the two ends of the thermo-acoustic engine are adjusted to achieve required phases. The acoustic power generated by the thermo-acoustic engine is not consumed by the resonant tube, but absorbed by expansion pistons of the linear motors and a higher efficiency is obtained. In addition, a heat source of the thermo-acoustic engine can utilize low-grade energy sources such as solar energy, industrial waste gas and smoke, and the energy utilization rate is improved.

Description

technical field [0001] The invention relates to a thermoacoustic power generation system, in particular to a linear double-acting thermoacoustic power generation system. Background technique [0002] Electric energy is widely used in various fields such as power, lighting, metallurgy, chemistry, textile, communication, broadcasting, etc. It is the main driving force for the development of science and technology and the leap of the national economy, and it is an indispensable secondary energy source. Thermal power generation and nuclear power generation are the main sources of electricity in my country at present. However, thermal power generation not only consumes non-renewable resources such as coal and oil, but also may be accompanied by a large amount of pollution and waste gas; the nuclear waste of nuclear power generation will also have a greater impact on the environment, and there are safety hazards. Although solar energy, tidal energy, water energy, wind energy, geo...

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Problems solved by technology

[0008] The disadvantage of this structure is that to achieve a larger power output, it is necessary to increase the number of linear motors and thermoacoustic engines, but the phase difference of the gas volume flow rate at both ends of the thermoacoustic engine is closely related to the number of units connected in series to the circuit. If the number is further increased, the regenerator of the thermoacoustic engine cannot work in a suitable traveling wave phase, and cannot generate large sound power for power generation and obtain ideal efficiency

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