CN215952313U - Heat storage and exchange device with step pore size and heating system - Google Patents
Heat storage and exchange device with step pore size and heating system Download PDFInfo
- Publication number
- CN215952313U CN215952313U CN202120479850.XU CN202120479850U CN215952313U CN 215952313 U CN215952313 U CN 215952313U CN 202120479850 U CN202120479850 U CN 202120479850U CN 215952313 U CN215952313 U CN 215952313U
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- Prior art keywords
- pore
- exchange device
- layer
- metal
- thermal storage
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- 239000011148 porous material Substances 0.000 title claims abstract description 62
- 238000010438 heat treatment Methods 0.000 title claims abstract description 11
- 238000005338 heat storage Methods 0.000 title abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 69
- 239000002184 metal Substances 0.000 claims abstract description 69
- 239000012782 phase change material Substances 0.000 claims abstract description 20
- 238000012546 transfer Methods 0.000 claims abstract description 5
- 238000003860 storage Methods 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- ZUDYPQRUOYEARG-UHFFFAOYSA-L barium(2+);dihydroxide;octahydrate Chemical compound O.O.O.O.O.O.O.O.[OH-].[OH-].[Ba+2] ZUDYPQRUOYEARG-UHFFFAOYSA-L 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- RSIJVJUOQBWMIM-UHFFFAOYSA-L sodium sulfate decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O RSIJVJUOQBWMIM-UHFFFAOYSA-L 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000006260 foam Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013518 molded foam Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model provides a heat storage and exchange device with a step pore size and a heating system, wherein the device comprises a shell (11), a fine pore metal chip layer (1), a medium pore metal chip layer (2) and a large pore metal chip layer (3) which are sequentially arranged in the shell (11) from bottom to top, a phase change material (4) which is arranged in the shell (11) and mixed with the fine pore metal chip layer (1), the medium pore metal chip layer (2) and the large pore metal chip layer (3), and a spiral metal pipeline (5) with fins, which penetrates through the shell (11), the fine pore metal chip layer (1), the medium pore metal chip layer (2) and the large pore metal chip layer (3) along the up-down direction. The utility model has the characteristics of high heat storage and heat transfer efficiency, low cost, simple processing and manufacturing and compact structure.
Description
Technical Field
The utility model relates to the field of heat storage of waste heat utilization and electric heating systems, in particular to a heat storage and exchange device with a step pore size and a heating system.
Background
The phase change heat storage is a technology which absorbs and stores heat generated in the production and life processes by utilizing the solidification and fusion characteristics of phase change materials and releases the heat when needed, can be used for solving the contradiction that heat energy is not matched in space and time, has important significance in the fields of electric power peak clipping and valley filling, waste heat utilization and the like, and is an important measure for improving the energy utilization efficiency and protecting the environment.
For phase change heat storage, since the thermal conductivity of most phase change materials is low, and the thermal efficiency of the associated heat storage device is seriously affected, enhancing the heat transfer performance of the phase change materials is one of effective means for solving the above problems. The foam metal has high thermal conductivity and can well coat the phase-change material, so that the time required by the solidification and melting of the phase-change material can be remarkably shortened, and the foam metal is widely applied to novel phase-change heat storage and exchange devices in recent years.
Generally speaking, the inside coil pipe that all can set up different types of phase transition heat-retaining heat exchanger, however, in case can bring the difficulty for the arrangement and the range of foamy copper after setting up the coil pipe, need set up the aperture on the foamy copper piece, especially to the coil pipe that the structure is complicated, set up the more and the specification in hole of quantity in hole on the foamy copper piece and need laminate the arrangement of coil pipe, lead to the processing degree of difficulty increase of core component among the heat-retaining heat exchanger. The formed foam metal block is provided with holes, so that the yield is low and the cost is increased. In addition, the porosity of a single foam metal is single, which is not beneficial to fully exerting the coupling effect of the high thermal conductivity of the foam metal and the natural convection after the phase-change material is melted.
Therefore, there is a need to develop a new phase-change heat storage and exchange device to at least partially solve the problems in the prior art, such as reducing the processing difficulty and improving the heat exchange efficiency.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects and shortcomings of the existing phase-change heat storage and exchange device, the utility model provides the heat storage and exchange device with the step pore size. The heat storage and exchange device has the characteristics of high heat transfer efficiency, easy processing and compact structure.
In order to solve the problems, the technical scheme provided by the utility model is as follows:
according to one aspect of the utility model, the heat storage and exchange device with the stepped pore size is characterized by comprising a shell (11), a fine pore metal chip layer (1), a medium pore metal chip layer (2) and a large pore metal chip layer (3) which are sequentially arranged in the shell (11) from bottom to top, a phase change material (4) which is arranged in the shell (11) and mixed with the fine pore metal chip layer (1), the medium pore metal chip layer (2) and the large pore metal chip layer (3), and a spiral metal pipeline (5) with fins, which penetrates through the shell (11) and the fine pore metal chip layer (1), the medium pore metal chip layer (2) and the large pore metal chip layer (3) along the up-down direction.
According to an embodiment of the utility model, the fine-porosity metal chip layer has a porosity of 1-10mm, the medium-porosity metal chip layer has a porosity of 10-30mm and the large-porosity metal chip layer has a porosity of 30-60mm, each metal chip layer having a thickness in the range of 50-1000 mm. The metal filings may be copper or aluminum, or other suitable metals.
According to the embodiment of the utility model, the heat storage and exchange device with the stepped pore sizes further comprises an insulating layer (12) arranged outside the shell (11).
According to an embodiment of the present invention, the material of the housing (11) may be plastic, Preferably Polypropylene (PP) or polyvinyl chloride (PVC). The shell can be cylindrical or cuboid, or other suitable shapes.
According to the embodiment of the utility model, the finned spiral metal pipe (5) is located at the middle part of the shell (11) basically, the fin spacing can be 1-3mm, and the fin can be an annular fin or a straight rib.
According to the embodiment of the utility model, the heat storage and exchange device with the stepped pore size further comprises temperature measuring elements (10,13) arranged on the shell (11). For example, the number of the temperature measuring elements is 2, and the temperature measuring elements are respectively arranged at the upper corner and the lower corner of the shell (11).
According to an embodiment of the present invention, the phase change material comprises paraffin wax or barium hydroxide octahydrate or sodium sulfate decahydrate, and other suitable phase change materials can be selected.
According to another aspect of the utility model, a heating system is provided, which comprises the heat storage and exchange device with the stepped pore size.
Compared with the prior art, the utility model has the beneficial effects that:
the heat storage and exchange device for the heat storage field of the waste heat utilization and electric heating system does not adopt the conventional molded foam metal with single porosity, but utilizes the waste material, namely metal scraps, generated in the machining process. The metal chips with three different pore sizes are sequentially paved from the bottom layer to the top layer of the device according to the pore sizes from small to large, the advantage of free accumulation of the metal chips is fully utilized by the arrangement mode, and the complex processing technology required by arranging the attaching coil pipe by opening the holes on the foam metal is avoided. In addition, the solidification and melting of the phase-change material are strengthened by utilizing the high thermal conductivity of the small-pore metal chips with the compact bottom layer, and the natural convection in the melting process of the phase-change material is strengthened by utilizing the large-pore metal chips with the sparse upper part. The heat storage and exchange device has the characteristics of high heat transfer efficiency, low cost, simple processing and manufacturing and compact structure.
Drawings
FIG. 1 is a structural view of a thermal storage heat exchange device having stepped pore dimensions according to an embodiment of the present invention;
fig. 2 is a schematic view of a thermal electric heating system including a thermal storage heat exchange device having a stepped pore size according to the present invention.
Description of reference numerals: 1-fine pore metal filing layer; 2-a medium pore metal filing layer; 3-a macroporous metal filings layer; 4-a phase change material; 5-a spiral metal tube with fins; 6-valve a; 7-valve b; 8-bolts and screws; 9-a flange; 10-upper temperature measuring element; 11-a housing; 12-an insulating layer; 13-lower temperature measuring element; 14-valve c; 15-valve d; 16-high temperature centrifugal pump a; 17-an electromagnetic heating device; 18-connecting a pipe; 19-a heat sink; 20-high temperature centrifugal pump b
Detailed Description
The utility model is further illustrated with reference to the following figures and examples, which are not intended to limit the utility model.
As shown in fig. 1, the heat storage and exchange device with stepped pore size according to the embodiment of the present invention includes a housing 11, which is a container that can be opened and closed by a cover, and other materials and components can be conveniently arranged therein, such as a bolt screw 8 and a flange 9 for sealing. The material of the housing 11 may be plastic, such as polypropylene (PP) or polyvinyl chloride (PVC). The outer part of the shell 11 can be further provided with an insulating layer 12 for insulating the shell 11.
A spiral metal pipeline 5 with fins is arranged in the middle of the inner side of the shell 11, and metal scrap layers with different porosities are respectively paved from the bottom to the top of the inner side of the shell 11; for example, the pore size of the metal chips is in the range of 1-60mm, the metal chips with small pore size (the size is 1-10mm) are placed at the lowermost layer of the heat storage and exchange device, the metal chips with medium pore size (the size is 10-30mm) are arranged at the middle layer, the metal chips with large pore size (the size is 30-60mm) are placed at the uppermost layer, and the thickness of each layer of metal chips is in the range of 50-1000 mm; a phase change material 4 is disposed in the housing 11 and mixed with the fine pore metal chip layer 1, the medium pore metal chip layer 2 and the large pore metal chip layer 3, for example, the phase change material may include paraffin or barium hydroxide octahydrate or sodium sulfate decahydrate; the spiral metal pipeline 5 penetrates out of the shell 11 and is connected with other pipelines, a valve a 6 and a valve b 7 can be arranged on the upper pipeline, a valve c 14 and a valve d 15 can be arranged on the lower pipeline, a temperature measuring element 10 is arranged at the upper corner of the shell 11, and a temperature measuring element 13 is arranged at the lower corner of the shell and is used for monitoring the temperature distribution and change in the shell.
As shown in fig. 2, the heat storage and exchange device of the present invention can be used for heat storage and exchange of the electromagnetic heating device 17. Before the system is started, the connecting pipeline is filled with cold water. The electromagnetic heating device 17 can be started by utilizing 'off-peak electricity' at night, and the generated high-temperature hot water enters the spiral pipeline 5 with fins through the high-temperature centrifugal pump a 16, so that the phase-change material 4 starts to melt, and the circulation of the high-temperature hot water is stopped after the phase-change material is completely melted, thereby completing the heat storage process; in daytime, the electromagnetic heating device 17 does not need to be started, and cold water circulates in the heat storage and exchange device by using the high-temperature centrifugal pump b 20, so that the heat is transferred from the molten phase-change material to the cold water, the water temperature is gradually increased, and then heating is performed through the radiator 19.
Although the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and those skilled in the art can make various changes or modifications without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a heat accumulation heat transfer device with step pore size, its characterized in that, includes casing (11), from bottom to top sets gradually fine and close pore metal bits layer (1), medium pore metal bits layer (2) and macropore metal bits layer (3) among casing (11), set up in casing (11) and with phase change material (4) that fine and close pore metal bits layer (1), medium pore metal bits layer (2) and macropore metal bits layer (3) mix, along upper and lower direction pass casing (11) and fine and close pore metal bits layer (1), medium pore metal bits layer (2) and macropore metal bits layer (3) take spiral metal pipeline (5) of fin.
2. The thermal storage and exchange device with stepped pore dimensions as claimed in claim 1, wherein: the porosity of the fine-pore metal chip layer is 1-10mm, the porosity of the medium-pore metal chip layer is 10-30mm, the porosity of the large-pore metal chip layer is 30-60mm, and the thickness of each metal chip layer is 50-1000 mm.
3. The thermal storage and exchange device with stepped pore dimensions as claimed in claim 1, wherein: the heat-insulating layer (12) is arranged outside the shell (11).
4. The thermal storage and exchange device with stepped pore dimensions as claimed in claim 1, wherein: the shell (11) is made of plastic.
5. The thermal storage and exchange device with stepped pore dimensions as claimed in claim 1, wherein: the fin spacing of the spiral metal pipeline (5) with fins is in the range of 1-3mm, and the fins are annular fins or straight ribs.
6. The thermal storage and exchange device with stepped pore dimensions as claimed in claim 1, wherein: and temperature measuring elements (10,13) arranged on the shell (11).
7. The thermal storage and exchange device with stepped pore dimensions as claimed in claim 1, wherein: the phase change material comprises paraffin wax or barium hydroxide octahydrate or sodium sulfate decahydrate.
8. The thermal storage and exchange device with stepped pore dimensions as claimed in claim 1, wherein: the shell is cylindrical or cuboid.
9. The thermal storage and exchange device with stepped pore dimensions as claimed in claim 4, wherein: the plastic is polypropylene (PP) or polyvinyl chloride (PVC).
10. A heating system comprising a thermal storage and heat exchange device having stepped pore sizes according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120479850.XU CN215952313U (en) | 2021-03-05 | 2021-03-05 | Heat storage and exchange device with step pore size and heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120479850.XU CN215952313U (en) | 2021-03-05 | 2021-03-05 | Heat storage and exchange device with step pore size and heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215952313U true CN215952313U (en) | 2022-03-04 |
Family
ID=80566372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120479850.XU Expired - Fee Related CN215952313U (en) | 2021-03-05 | 2021-03-05 | Heat storage and exchange device with step pore size and heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215952313U (en) |
-
2021
- 2021-03-05 CN CN202120479850.XU patent/CN215952313U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220304 |
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| CF01 | Termination of patent right due to non-payment of annual fee |