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Heat phonomotor capable of utilizing multi-temperature position heat power supply drive

A thermoacoustic engine, heat source technology, applied in the direction of machines/engines, mechanisms that generate mechanical power, mechanical equipment, etc., can solve problems such as underutilization of heat sources, and achieve the effect of compact structure

Inactive Publication Date: 2008-10-01
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, energy shortage has become an important problem facing modern society, but a large number of relatively low-temperature heat sources have not been fully utilized

Method used

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  • Heat phonomotor capable of utilizing multi-temperature position heat power supply drive
  • Heat phonomotor capable of utilizing multi-temperature position heat power supply drive
  • Heat phonomotor capable of utilizing multi-temperature position heat power supply drive

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Embodiment Construction

[0016] The regenerator of the existing thermoacoustic engine is driven by a single-temperature heat source, and the thermoacoustic engine that can be driven by multi-temperature heat sources is formed by improving the regenerator and heating device on the original thermoacoustic engine. The present invention proposes to divide the regenerator 4 of the thermoacoustic engine into n units from the high temperature end to the room temperature end, and provide each unit with a heat source T from high to low in turn. h，1 ,T h，2 ,...,T c，n-1 ,T c，n . The filler of the regenerator 4 is made of stainless steel wire mesh, and the shell is made of a rigid tube with poor heat transfer performance. Its function is to seal the high-pressure gas and provide rigid support for the working fluid. Arrange the working temperature on the shell in turn at T h，1 ,T h，2 ,...,T c，n-1 ,T c，n The heating device 3 is made as a high-temperature heat exchanger, and the high-temperature heat exchange...

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Abstract

The invention discloses a thermo-acoustic engine driven by a multi-temperature-level heat source, comprising a traveling wave circuit of the thermo-acoustic engine and a resonance tube of the thermo-acoustic engine. The traveling wave circuit of the thermo-acoustic engine consists of a direct current inhabitation component, a main cooler, a heat regenerator, a heat buffer tube, a secondary cooler, a deflector, a feedback loop and an acoustic capacitance, characterized in that the heat regenerator is provided with a heating device on the outside, the heating device is a multi-temperature-level heating device with high temperature level and low temperature level being arranged from the high temperature end to the lower temperature end successively. The invention makes full use of the thermoacoustic effect and the regenerative function of the thermo-acoustic engine in oscillating flow, the multi-temperature-level heat source is used for heating the different positions in the axial direction of the engine, thus the temperature level of an available heat source is lowered, the heat-power conversion efficiency of the thermo-acoustic engine is improved, and the structures of the heat regenerator and the heating device become more compact.

Description

technical field [0001] The invention relates to a thermoacoustic engine, in particular to a thermoacoustic engine that can be driven by a multi-temperature heat source. Background technique [0002] The thermoacoustic effect is a phenomenon of mutual conversion between heat and sound, and a thermoacoustic engine is a machine that uses the thermoacoustic effect to convert heat energy into sound energy. The thermoacoustic heat engine can establish a reasonable phase relationship between the velocity and pressure of the oscillating fluid without external mechanical means, so no mechanical transmission parts are required, which greatly simplifies the structure of the system and fundamentally eliminates the problems of conventional machinery. Wear and vibration, so it has the advantages of long life and low cost. Thermoacoustic engines can be driven by low-grade thermal energy, and waste heat, solar energy, and gas can be used as heat sources. The use of low-grade heat sources ...

Claims

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Application Information

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IPC IPC(8): F03G7/00
Inventor 邱利民王波孙大明甘智华赖碧翚
Owner ZHEJIANG UNIV
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