Thermo-acoustic engine system using temperature-variable heat source

A thermoacoustic engine, heat source technology, applied in Stirling engines, machines/engines, mechanisms that generate mechanical power, etc., can solve problems such as the inability to fully utilize heat effectively, and achieve the effect of improving conversion efficiency

Inactive Publication Date: 2008-10-29
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiency that the current thermoacoustic engine cannot fully and effectively utilize heat when using a variable temperature heat source, and to provide a thermoacoustic engine system that utilizes a variable temperature heat source

Method used

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  • Thermo-acoustic engine system using temperature-variable heat source
  • Thermo-acoustic engine system using temperature-variable heat source
  • Thermo-acoustic engine system using temperature-variable heat source

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Experimental program
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Embodiment 1

[0047] Such as figure 2 As shown, as an example, three traveling wave loops are connected on the resonant tube of the thermoacoustic engine system. Taking the first traveling wave loop on the left as shown in the figure as an example, the design structure of each traveling wave loop is as follows: starting from the resonance tube 6, connect the feedback tube 5, the low-temperature inverter Heater 3 (such as adopting room temperature heat exchanger 3 for heat exchange with room temperature), regenerator 1, high temperature heat exchanger 2, thermal buffer tube 4, the other end of thermal buffer tube 4 is for example passed through another same low temperature exchanger. Heater 3 is connected with resonant tube 6 . Each high-temperature heat exchanger has an input port 9 and an output port 10 for the input and output of the heat-carrying fluid medium, and the high-temperature heat exchanger output port 10 of the first-stage traveling wave loop is connected to the second-stage ...

Embodiment 2

[0049] figure 1 The single-stage traveling wave thermoacoustic engine in can also be designed as image 3 structure shown. exist image 3 Among them, the regenerator 1, the thermal buffer tube 4, the feedback tube 5 and the resonance tube 6 adopt a square structure, and the regenerator 1 and the thermal buffer tube 4 are arranged between the high-temperature heat exchanger 2 and the low-temperature heat exchanger 3, The regenerator 1 and the thermal buffer pipe 4 are separated by a partition, which extends through the low temperature heat exchanger 3 and serves as the inner side wall of the feedback pipe 5 on the outside of the low temperature heat exchanger 3, and the feedback pipe 5 The outer sidewall is formed by the integral shell forming the traveling wave loop. Such as Figure 4 As shown, in order to make the structure of multiple traveling wave loops more compact, the partitions of the multistage traveling wave loops are connected into a whole. A single loop uses ...

Embodiment 3

[0051] Such as Figure 5 As shown, the regenerator 1, high-temperature heat exchanger 2, thermal buffer pipe 4, feedback pipe 5 and shared low-temperature heat exchanger of each stage in this embodiment adopt a square structure, but it is different from Embodiment 2 The most important thing is that the regenerator and thermal buffer tube of the previous stage are not close to each other but separated from each other and form a certain space with the high-temperature heat exchanger and the shared low-temperature heat exchanger, in which the high-temperature heat exchange of the latter stage is accommodated. Regenerators, regenerators and thermal buffer tubes, regenerators and thermal buffer tubes at all levels are close together and share the same low-temperature heat exchanger 3, and the loop of the latter stage is wrapped in the loop of the previous stage Inside, the regenerators of each stage are separated by a partition, and a part of the partition extends into the resonant...

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Abstract

The invention provides a thermo-acoustic engine system by adopting variable-temperature heat source. The system comprises a resonant tube. The resonant tube is provided with a mechanical energy output device and at least two stages of traveling wave loops; all the traveling wave loops share the resonant tube; each traveling wave loop is provided with a high-temperature heat exchanger; the high-temperature heat exchanger is provided with an input port and an output port used as the input and output medium; the output port of the high-temperature heat exchanger of the previous traveling wave loop communicates with the input port of the high-temperature heat exchanger of the next traveling wave loop, and the working temperature of the high-temperature heat exchangers of the at least two stages of traveling wave loops gradually reduce from the previous traveling wave loop to the next traveling wave loop. The system improves the heat conversion efficiency and has compact structure.

Description

technical field [0001] The invention relates to a thermoacoustic engine, in particular to a thermoacoustic engine system utilizing a variable temperature heat source. Background technique [0002] The thermoacoustic engine is an energy conversion device that converts heat energy into sound energy by using the thermoacoustic effect. It has the following advantages: There are no moving parts in the system, which fundamentally eliminates the common wear and vibration of conventional machinery, and the operation is stable and reliable. , long service life; using heat as energy, solar energy, waste heat, etc. can be used as driving sources, which is very meaningful for solving the problem of lack of power in remote areas; using inert gas as a working medium is conducive to environmental protection, so it has a very broad development prospect. At present, the thermoacoustic conversion efficiency of traveling wave thermoacoustic engine has reached 30%, which is close to the conver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03G7/00F25B9/00
CPCF02G2243/54F03G7/002
Inventor 罗二仓胡剑英戴巍吴张华
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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