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Heat regenerator coupled with microminiature heat pipes and working method

A micro-sized, regenerator technology, applied in superheaters, indirect heat exchangers, lighting and heating equipment, etc., can solve the problems of unused regenerators, achieve good heat storage capacity, regular layout, and stress uniform effect

Active Publication Date: 2020-12-08
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the application fields of heat pipes involve aerospace, construction, automobile, radiator manufacturing, medical and health and many other fields, but they are rarely used in the heat recovery technology of Stirling machine, and there is no use of heat pipes for heat recovery. Literature and Reports

Method used

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  • Heat regenerator coupled with microminiature heat pipes and working method
  • Heat regenerator coupled with microminiature heat pipes and working method
  • Heat regenerator coupled with microminiature heat pipes and working method

Examples

Experimental program
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Effect test

Embodiment 1

[0047] like image 3 As shown, the miniature heat pipe 1 includes a tube shell, a heat pipe capillary structure 3 and a liquid phase change working medium 4. The tube shell tube length is preferably 30 mm, the tube diameter is 3 mm, the tube wall thickness is 0.2 mm, and the axial center distance is 4 mm. The interval between segments is 4mm. The tube shell is made of seamless metal material with high thermal conductivity, which plays a role in quickly transferring heat. The capillary structure 3 of the heat pipe is composed of several layers of fine copper mesh arranged on the inner wall of the heat pipe, and the capillary holes between the multilayer meshes are used to guide the liquid. The liquid phase-change working medium 4 is composed of organic or inorganic substances with a boiling point of 300K-700. like Figure 5 Shown is a partial schematic diagram of the staggered arrangement of heat pipes. In the heat blowing stage of the heat recovery process, the high-tempera...

Embodiment 2

[0049] like Figure 8 As shown, the miniature heat pipe 1 is a triangular tube (the triangular tube means that the cross section of the heat pipe is a triangle), including a tube shell and a liquid phase change working medium 4, the length of the heat pipe is preferably 30 mm, and the equilateral length of the triangle is 3 mm. The wall thickness is 0.2mm, the axial center distance is 4mm, and the interval between segments is 4mm. The tube shell is made of seamless metal material with high thermal conductivity, which plays a role in quickly transferring heat. The capillary structure 3 of the heat pipe is composed of sharp-angle grooves on the inner wall of the triangular tube, and uses the capillary suction of the sharp corners to guide liquid. The liquid phase-change working medium 4 is composed of organic or inorganic substances with a boiling point of 300K-700. Image 6Shown is a partial schematic diagram of the staggered arrangement of triangular heat pipes. In the heat ...

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Abstract

The invention discloses a heat regenerator coupled with microminiature heat pipes and a working method. The heat regenerator is suitable for being used in cold and hot circulation working conditions of industrial and mining enterprises. The heat regenerator comprises a heat regenerator body of a columnar structure, the heat regenerator body is formed by rolling a rectangular mat rolling plate, themultiple microminiature heat pipes are arranged on the whole inwards-rolled surface of the mat rolling plate in a segmented and staggered arrangement manner, the rolling direction of the mat rollingplate is perpendicular to the axial directions of the microminiature heat pipes, and a gap between every two adjacent microminiature heat pipes in each row are equal. Moreover, the microminiature heatpipes in every two adjacent rows of microminiature heat pipes are arranged in a staggered manner, so that it is guaranteed that the tail ends of the first row of microminiature heat pipes just correspond to the gaps of the second row of microminiature heat pipes; and during use, one end of the heat regenerator body is arranged at the inflow end of a high-temperature gas supply working medium, andthe other end of the heat regenerator body is arranged at the inflow end of a low-temperature gas supply working medium. According to the heat regenerator, the heat regeneration efficiency is high, the flow resistance in the heat regenerator can be obviously reduced, the structure of the heat regenerator can be more compact, and therefore the circulation efficiency is remarkably improved.

Description

technical field [0001] The invention relates to a regenerator and a working method, in particular to a regenerator coupled with miniature heat pipes and a working method used in industrial and mining enterprises in cold and heat cycle working conditions. Background technique [0002] The Stirling cycle is the basic working principle of Stirling engines and refrigerators. This cycle is a closed generalized Carnot cycle that adopts heat recovery under constant volume and is the most perfect thermodynamic theory. The Stirling cycle is a reversible cycle consisting of two constant-volume endothermic processes and two constant-temperature expansion processes. Ideally, the heat released by the constant-volume exothermic process is just absorbed by the constant-volume endothermic process. The regenerator is the place where the circulating working fluid performs this reheating process. The more complete the reheating process, the higher the thermal efficiency of the heat engine or r...

Claims

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Application Information

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IPC IPC(8): F25B9/14F25B40/06F28D15/04
CPCF25B9/14F25B40/06F28D15/046F28D2015/0225
Inventor 王焕光张碧林刘猛汤雨明包云皓朱帅
Owner CHINA UNIV OF MINING & TECH
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