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Double-acting thermo-acoustic power generation system simultaneously recycling cold energy and heat energy

A power generation system, double-acting technology, applied in the direction of machines/engines, mechanical power generating mechanisms, mechanical equipment, etc., can solve the problem of not being able to use cold sources and heat sources at the same time, to improve thermoelectric conversion efficiency, increase temperature ratio, The effect of improving the ability of vocal work

Active Publication Date: 2014-03-26
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

[0006] The purpose of the present invention is to solve the problem that the existing thermoacoustic power generation system cannot use the cold source and the heat source at the same time, and proposes a dual-action thermoacoustic power generation system that can simultaneously recycle the cold energy of the cryogenic fluid and the low-grade heat energy; the advantages of the present invention The new low-grade heat source supply system and low-temperature fluid cold source supply system can greatly improve the utilization rate of energy, and the simultaneous use of cold and heat sources can greatly increase the ratio of absolute temperatures at both ends of the regenerator; at the same time, the new structural design , which reduces the loss of cold energy, greatly improves the performance of the thermoacoustic power generation system without greatly increasing the complexity of the system, and also improves the economy of energy recovery and utilization

Method used

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  • Double-acting thermo-acoustic power generation system simultaneously recycling cold energy and heat energy
  • Double-acting thermo-acoustic power generation system simultaneously recycling cold energy and heat energy
  • Double-acting thermo-acoustic power generation system simultaneously recycling cold energy and heat energy

Examples

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Embodiment 1

[0027] figure 2 It is a structural schematic diagram of a dual-action thermoacoustic power generation system (Example 1) that simultaneously recovers and utilizes cold energy of low-temperature fluid and low-grade heat energy in the present invention; its structure includes three sets of thermoacoustic power generation units; each of the three sets of thermoacoustic power generation units A set of thermoacoustic power generation units is composed of a linear generator 101 and a thermoacoustic engine; the three groups of thermoacoustic power generation units form a loop;

[0028]Each linear generator 101 is composed of a cylinder, a compression piston 111 and an expansion piston 112 placed at both ends of the cylinder, a generator mover 113 connected to the compression piston 111 and expansion piston 112, and a power generator wound around the periphery of the generator mover 113. Composed of a generator stator coil 114 and a generator load 115 electrically connected to the ge...

Embodiment 2

[0034] image 3 It is a structural schematic diagram of a dual-action thermoacoustic power generation system (Example 2) that simultaneously recycles cold energy of low-temperature fluid and low-grade heat energy of the present invention; this example is based on Example 1, and the heat source supply system adopts trough solar energy Heat source supply system, cold source supply system adopts liquid nitrogen or liquefied natural gas cold source supply system.

[0035] Each of the three groups of thermoacoustic power generation units is composed of a linear generator 101 and a thermoacoustic engine; the three groups of thermoacoustic power generation units form a loop, and its structure is the same as in Embodiment 1;

[0036] The trough solar heat source supply system includes: a trough heat collector 305, an oil pump 306, a thermal energy output pipeline 303, and a thermal energy input pipeline 307; both ends of the thermal energy input pipeline 307 of each group of thermoaco...

Embodiment 3

[0042] Figure 4 It is a schematic structural diagram of a dual-action thermoacoustic power generation system (Example 3) that simultaneously recycles cold energy of low-temperature fluid and low-grade heat energy of the present invention. In this embodiment, on the basis of Embodiment 2, the three sets of linear generators and engines in the thermoacoustic power generation system are extended to four sets of linear generators and engines, and the trough solar heat source and liquid nitrogen or liquefied natural gas cold source supply system It is just a simple addition of a pipeline, which improves the power density and overall power generation of the system after a simple structural change. At the same time, according to the specific power demand and size requirements, four or more system combinations can be selected, and the arrangement can be in the form of a loop or side by side.

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Abstract

The invention relates to a double-acting thermo-acoustic power generation system simultaneously recycling cold energy and heat energy. The double-acting thermo-acoustic power generation system simultaneously recycling cold energy and heat energy comprises at least three thermo-acoustic power generation units, a low-temperature cold energy supplying system and a low-level heat energy supplying system and each thermo-acoustic power generation unit is composed of a linear electric generator and a thermo-acoustic engine; each thermo-acoustic engine comprises a first indoor temperature heat exchanger, a first heat buffering tube, a cold-end heat exchanger, a heat returning machine, a hot-end heat exchanger, a second heat buffering tube, a second indoor temperature heat exchanger and a connecting tube, wherein the first indoor temperature heat exchanger, the first heat buffering tube, the cold-end heat exchanger, the heat returning machine, the hot-end heat exchanger, the second heat buffering tube, the second indoor temperature heat exchanger and the connecting tube are sequentially connected; the power generation system can recycle cold energy and heat energy at the same time and the energy utilization ratio can be improved; the high temperature end and the low temperature end of each heat returning machine form a large temperature gradient so that the capacity of acoustic power generation of each heat returning machine can be improved and the power generation capacity of the system can be increased; each cold-end heat exchanger and the corresponding hot-end heat exchanger are additionally and respectively provided with one heat buffering tube and one indoor temperature heat exchanger, so that cold energy loss and heat energy loss are reduced, the electric generator is prevented from being operated in a cold environment or a hot environment, the reliability of the system is improved, and the application prospect is wide.

Description

technical field [0001] The invention relates to a power generation system, in particular to a dual-action thermoacoustic power generation system which simultaneously recycles cold energy of low-temperature fluid and low-grade heat energy. Background technique [0002] The potential crisis of energy and the deterioration of ecological environment make countries all over the world actively develop and utilize low-grade heat energy. In industrial production, there is a large amount of low-grade waste heat that cannot be further utilized by conventional methods. Usually, this part of heat can only be discharged into the environment, including steam boilers, heat medium boilers, incinerators, heating furnaces, electric arc furnaces, cement Flue gas emissions from kilns, etc., most of which still have considerable heat energy that has not been effectively utilized. At the same time, solar energy is safe, pollution-free, abundant in reserves and can be economically utilized. my c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03G7/00
Inventor 吴张华罗二仓戴巍李东辉
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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