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Medium-high temperature phase-change heat storage device

A heat storage device, medium and high temperature technology, applied in heat storage equipment, heat exchange equipment, heat exchanger types, etc., can solve the problem that the structural design of the inner container and coil components is not mature, and it is difficult to achieve efficient and uniform heat exchange , uneven distribution of heat exchange coils, etc., to achieve the effect of ensuring stability and safety performance, convenient maintenance, and simple and novel structural design

Active Publication Date: 2016-04-20
PIONEER ENERGY JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing phase-change heat storage device includes a shell, an inner tank and a coil. The inner tank is filled with a phase-change material, and the coil is embedded in the phase-change material. Since the structural design of the inner tank and coil components is not mature enough, It has the following typical defects: 1. The heat exchange coil is unevenly distributed in the container, making it difficult to achieve efficient and uniform heat exchange; 2. The welding point of the pipe is soaked in the phase change material for a long time to cause leakage, and the contact between the heat transfer medium and the phase change material , reduce the life of the heat storage device; 3. The solder joints are not immersed in the phase change material, but the solder joints are in the inner tank. If the solder joints leak, it will also cause the heat transfer medium to contact the phase change material

Method used

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  • Medium-high temperature phase-change heat storage device
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  • Medium-high temperature phase-change heat storage device

Examples

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Effect test

Embodiment 1

[0035] Such as figure 2 , Figure 5 As shown, a medium-high temperature phase-change heat storage device includes a casing 1 , a liner 3 inside the casing 1 , a coil 5 and a base 7 below the casing 1 . The liner 3 is filled with a phase-change material 4, and there are multiple coils 5, all of which are arranged in a staggered manner. Each coil 5 includes a heat storage tube 51 and a main pipe 8 for welding water inlet or outlet. The connecting pipe 52 of the pipe 9 is integrally connected with the heat storage pipe 51 , and the heat storage pipe 51 is embedded in the phase change material 4 , and the heat storage pipes 51 have the same shape and are staggered with each other. In this embodiment, every two coils 5 form a group, and they are turned upside down to realize complementary spatial heat exchange, and enhance heat exchange density and heat exchange uniformity. The specific two arrangements are as follows image 3 , Figure 4 As shown, each group of coils 5 includes...

Embodiment 2

[0047] As shown in Figure 1(b), the connecting pipe 52 of the present embodiment includes an upward transition section 521, the position of the welding point 10 is higher than the first end, that is, the low point of the space, and the high point of the space is located in the inner tank, if the welding point 10 leaks , the heat transfer medium slides down the pipe to the lowest point in the space and drips.

[0048] All the other are identical with embodiment 1.

Embodiment 3

[0050] As shown in Figure 1(c), the connecting pipe 52 of this embodiment includes an upward transition section 521, the position of the welding point 10 is higher than the first end, that is, the low point of the space, and the high point of the space is located outside the inner tank, if the welding point 10 leaks , the heat transfer medium slides down the pipe to the lowest point in the space and drips.

[0051] All the other are identical with embodiment 1.

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Abstract

The invention relates to a medium-high temperature phase-change heat storage device which comprises a shell (1), an inner container (3) and a plurality of coil pipes (5). The inner container (3) is arranged in the shell (1) and is filled with phase-change materials (4), the various coil pipes (5) comprise heat storage pipes (51) and connecting pipes (52), the connecting pipes (52) are used for welding a water inlet main flow pipe (8) or a water outlet main flow pipe (9), the heat storage pipes (51) are buried in the phase-change materials (4), the connecting pipes (52) are integrally connected with the heat storage pipes (51), and the various heat storage pipes (51) have identical shapes and are arranged in a mutually staggered manner, so that heat exchange spaces can be complemented by one another. Compared with the prior art, the medium-high temperature phase-change heat storage device has the advantages that the medium-high temperature phase-change heat storage device is high in heat exchange density; the shapes and the structures of the coil pipes are designed, so that problems of leakage and contact between heat exchange media and existing phase-change materials due to welding can be solved, the medium-high temperature phase-change heat storage device can be conveniently and feasibly maintained in late periods, service risks and the production cost can be reduced, and the service life of the medium-high temperature phase-change heat storage device can be prolonged.

Description

technical field [0001] The invention relates to a phase-change heat storage device, in particular to a medium-high temperature phase-change heat storage device. Background technique [0002] The existing phase-change heat storage device includes a shell, an inner tank and a coil. The inner tank is filled with a phase-change material, and the coil is embedded in the phase-change material. Since the structural design of the inner tank and coil components is not mature enough, It has the following typical defects: 1. The heat exchange coil is unevenly distributed in the container, making it difficult to achieve efficient and uniform heat exchange; 2. The welding point of the pipe is soaked in the phase change material for a long time to cause leakage, and the contact between the heat transfer medium and the phase change material , reduce the life of the heat storage device; 3. The solder joints are not soaked in the phase change material, but the solder joints are in the inner ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D20/02F28F27/00
CPCF28D20/02F28F27/00Y02E60/14
Inventor 王鈜雷小明刘晓龙马力
Owner PIONEER ENERGY JIANGSU
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