CN219640454U - Phase change energy storage device - Google Patents
Phase change energy storage device Download PDFInfo
- Publication number
- CN219640454U CN219640454U CN202223592416.6U CN202223592416U CN219640454U CN 219640454 U CN219640454 U CN 219640454U CN 202223592416 U CN202223592416 U CN 202223592416U CN 219640454 U CN219640454 U CN 219640454U
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- China
- Prior art keywords
- energy storage
- heat exchange
- furnace core
- metal
- heat
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- 238000004146 energy storage Methods 0.000 title claims abstract description 55
- 229910052751 metal Inorganic materials 0.000 claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 43
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000002844 melting Methods 0.000 claims description 13
- 230000008018 melting Effects 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 19
- 230000005611 electricity Effects 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000004321 preservation Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005338 heat storage Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
Abstract
The utility model discloses a phase-change energy storage device, and relates to the technical field of energy storage equipment. The device comprises a furnace body, wherein a furnace core is arranged in the furnace body, two ends of the furnace core are sealed by tube plates to form an inner cavity, a plurality of heat exchange tubes which are arranged in parallel are arranged in the inner cavity, a metal energy storage medium is arranged in the inner cavity, a heating belt for heating the metal energy storage medium to a molten state is wound outside the furnace core, and a plurality of coils are arranged outside the furnace core and electrified to form an electromagnetic high-frequency coil. The utility model utilizes the phase change of metal to store heat; the utility model can utilize the lower valley electricity cost to heat the metal at night, the metal keeps warm and stores heat after the physical state changes, and the stored heat is put into production application or used for domestic water through heat exchange in the daytime, so that the problem of higher cost caused by overlarge electricity consumption or use of a gas boiler during the power supply of enterprises can be avoided, and meanwhile, the utility model utilizes the metal physical state changes to store energy, has lower requirement on volume and reduces the occupied area and the production cost.
Description
Technical Field
The utility model relates to the technical field of energy storage equipment, in particular to a phase-change energy storage device.
Background
Heat recovery is to recover waste heat (cold) or waste heat (cold) inside and outside a building, and to use the recovered heat (cold) as a heat source for heating (cold) or other heating devices. The heat recovery technology plays an important role in the current situation of energy shortage.
The energy storage technology is also one of heat recovery technologies, and has important values for eliminating the contradiction between the supply and the demand of energy, improving the energy utilization efficiency and utilizing renewable energy. In building heating and cooling and many industrial processes, energy is utilized in the form of thermal energy, and therefore, thermal energy is more efficient to store in these areas than other forms of energy.
Most energy storage devices store thermal energy in a medium by heat exchange between cold and hot media, and are classified into sensible heat storage, latent heat storage and thermochemical storage according to a state change.
Currently, chinese patent publication No. CN207635920U discloses an energy storage device comprising an energy-producing host and at least two water storage tanks; the water storage tank comprises a tank top, a tank bottom and a tank wall connected between the tank top and the tank bottom; an upper water distributor and a lower water distributor are arranged in the water storage tank; at least one heat preservation layer is arranged on the outer surface of the tank wall;
a circulating water supply pipeline is communicated between the two ends of the energy production host; wherein any two adjacent upper water distributors are communicated through a first communication pipe, and each first communication pipe is communicated with the circulating water supply pipeline through a first connection pipe; any two adjacent lower water distributors are communicated through second communicating pipes, and each second communicating pipe is communicated with the circulating water supply pipeline through a second connecting pipe.
The energy storage and energy release process of the equipment is simple, the energy storage and energy release effect is good, the heat preservation effect is good, and the construction is convenient, but the device uses water as an energy storage medium, when the heat angle to be stored is needed, the water quantity is required to be increased to ensure the energy storage effect, the volume of the device is required to be increased or the number of the devices is increased to achieve the purpose when the water quantity of the energy storage is increased, and the production cost and the occupied area are increased.
Disclosure of Invention
The utility model aims at the technical problems, overcomes the defects of the prior art and provides a phase-change energy storage device.
In order to solve the technical problems, the utility model provides a phase-change energy storage device.
The technical effects are as follows: an energy storage device capable of storing more heat is designed, and the heat is stored by utilizing the phase change of metal; the method has the advantages that the metal can be heated at night by using lower valley electricity cost at night, heat preservation and heat storage are performed after the metal is subjected to physical state change, and the stored heat is put into production or used for domestic water by heat exchange in the daytime, so that the problem of high cost caused by overlarge electricity consumption during the peak electricity period of an enterprise can be avoided, meanwhile, the method utilizes the metal physical state change to store energy, has lower requirement on volume, and reduces the occupied area and the production cost.
The technical scheme of the utility model is as follows: the phase change energy storage device comprises a furnace body, wherein a furnace core is arranged in the furnace body, two ends of the furnace core are sealed by tube plates to form an inner cavity, a plurality of heat exchange tubes which are arranged in parallel are arranged in the inner cavity, the heat exchange tubes are communicated to the tube plates at the two ends, and the heat exchange tubes are distributed along the vertical direction, so that a medium for heat exchange circulates from bottom to top;
the inner cavity is provided with a metal energy storage medium, the heat exchange tube is immersed in the metal energy storage medium, a heating belt for heating the metal energy storage medium to a molten state is wound outside the furnace core, and a plurality of rings of heating belts are arranged outside the furnace core and electrified to form an electromagnetic high-frequency coil.
Further, the end sockets are fixed at the two ends of the furnace body, and the end sockets at the two ends of the furnace body are respectively provided with:
the medium inlet is formed on one side of the furnace body close to the ground, is communicated with the bottom of the heat exchange tube and is used for introducing a medium before heat exchange;
the medium outlet is formed on one side of the furnace body far away from the ground, is communicated with the top end of the heat exchange tube and is used for discharging the medium after heat exchange.
In the phase-change energy storage device, the metal energy storage medium is metal with a melting point lower than that of iron, and the metal energy storage medium comprises aluminum or lead.
The phase-change energy storage device is characterized in that a feed inlet and a discharge outlet which are communicated with the inner cavity are arranged on the furnace core, the feed inlet is positioned on one side, close to the ground, of the furnace core, the discharge outlet is positioned on one side, far away from the ground, of the furnace core, and the heating belt is positioned outside the furnace core between the feed inlet and the discharge outlet.
And an insulating layer is attached to the outside of the furnace core, and the insulating layer covers between the furnace core and the heating belt.
The furnace body is made of iron or magnetic steel, and the furnace body, the furnace core, the sealing head and the heat exchange tube are made of stainless steel materials.
The beneficial effects of the utility model are as follows:
(1) In the utility model, when the heating belt is in a valley state at night, the heating belt is electrified, and because the heating belt forms an electromagnetic high-frequency coil, under the electromagnetic induction effect, a steel or iron furnace core generates vortex and heats, after the temperature reaches the melting point of a metal energy storage medium, the metal energy storage medium is melted into a molten state and stores heat, and at the moment, the heat is preserved by a heat preservation layer coated outside the furnace core to prevent dissipation; when the solar energy heat exchange furnace is in a daytime environment, electricity is used as peak electricity, an enterprise can lead a medium for heat exchange into a heat exchange tube in a furnace core from a medium inlet to exchange heat and discharge the medium from a medium outlet to perform industrial production or living utilization, so that the dependence of the enterprise on peak electricity is greatly reduced, and the production cost is reduced;
(2) In the utility model, the medium for heat exchange can be normal temperature air or warm water, and when the medium is air, the medium heated by the heat exchange tube can be quickly heated and discharged; when the medium is water, the water can slowly enter the heat exchange tube from bottom to top, and is subjected to full heat exchange with the metal energy storage medium, and is discharged from the medium outlet after being heated to steam, so that the heat exchange sufficiency is improved;
(3) In the utility model, heat exchange is carried out in the straight pipe market, the cleaning is convenient, the whole structure is simple, the sealing surface is reduced, the operation is reliable, the manufacturing cost is low, and the production cost is further reduced; the melting point of lead is 327 ℃, the melting point of aluminum is 660 ℃, and the melting points of the lead and the aluminum are far lower than the melting point of steel materials, so that the lead is suitable for being used as an energy storage medium; in addition, the utility model stores latent heat through the change of metal state, stores more heat and reduces the volume requirement.
(4) In the utility model, an energy storage device capable of storing more heat is designed, and the heat is stored by utilizing the phase change of metal; the utility model can utilize the lower valley electricity cost to heat the metal at night, the metal keeps warm and stores heat after the physical state changes, and the stored heat is put into production application or used for domestic water through heat exchange in the daytime, so that the problem of higher cost caused by overlarge electricity consumption or use of a gas boiler during the power supply of enterprises can be avoided, and meanwhile, the utility model utilizes the metal physical state changes to store energy, has lower requirement on volume and reduces the occupied area and the production cost.
Drawings
Fig. 1 is a structural diagram of embodiment 1;
fig. 2 is a schematic view of the structure of the furnace core in example 1.
Wherein: 1. a furnace body; 11. a media inlet; 12. a medium outlet; 13. a seal head; 2. a furnace core; 3. a heat exchange tube; 4. a heating belt; 5. a heat preservation layer; 6. a feed inlet; 7. and a discharge port.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the following detailed description is given with reference to the accompanying drawings and the detailed description. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "mounted" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
The phase-change energy storage device provided by the embodiment has the structure shown in fig. 1 and 2, and comprises a furnace body 1 which is integrally cylindrical, wherein the top end and the bottom end of the furnace body 1 are fixedly connected with sealing heads 13. The end socket 13 at the top end of the furnace body 1 is communicated with a medium outlet 12, the end socket 13 at the bottom end of the furnace body 1 is communicated with a medium inlet 11, and heat exchange medium enters from the medium inlet 11 at the bottom and is discharged from the medium outlet 12 at the top after passing through the middle heat exchange of the furnace body 1.
As shown in fig. 1 and 2, a furnace core 2 is arranged in a furnace body 1, the furnace core 2 is arranged in a hollow way to form an inner cavity, and a plurality of heat exchange tubes 3 are arranged in the inner cavity. The upper end and the lower end of the furnace core 2 are both provided with tube plates for fixing the heat exchange tubes 3, and the heat exchange tubes 3 are communicated into the sealing heads 13 outside the tube plates. The side surface of the upper end of the furnace core 2 is provided with a feed inlet 6 communicated with the inner cavity, and the side surface of the lower end of the furnace core 2 is provided with a discharge outlet 7 communicated with the inner cavity. Because the metal energy storage medium expands after absorbing heat and melting, the feed inlet 6 and the discharge outlet 7 are arranged, so that the metal energy storage medium can be discharged on one hand, and the metal energy storage medium can be buffered when the volume of the metal is increased on the other hand.
As shown in fig. 1 and 2, a metal energy storage medium is arranged in the inner cavity, and the metal energy storage medium in the utility model is metal with a melting point lower than that of iron, including aluminum, lead and other metals. The heat exchange tubes 3 are immersed in the metal energy storage medium, the heat exchange tubes 3 are distributed along the vertical direction, and the medium for heat exchange circulates from bottom to top. When the heat exchange tube 3 is filled with a common normal-temperature medium, heat in the metal energy storage medium can be exchanged into the normal-temperature medium.
In the utility model, the furnace body 1, the furnace core 2, the sealing head 13 and the heat exchange tube 3 are all made of stainless steel materials.
The side surface of the furnace core 2 is coated with a heat preservation layer 5, and a heating belt 4 is arranged outside the heat preservation layer 5. The heating belt 4 is wound outside the furnace core 2 and forms an electromagnetic high-frequency coil, and after being electrified, the heating belt can form electromagnetic induction to heat the metal energy storage medium. The metal energy storage medium in the utility model is aluminum or lead. The melting point of lead is 327 ℃, the melting point of aluminum is 660 ℃, and the melting point of aluminum is far lower than that of steel materials, so that the lead is suitable for being used as an energy storage medium.
The specific implementation process comprises the following steps: when the temperature reaches the melting point of the metal energy storage medium, the metal energy storage medium is melted into a molten state and stores heat, and at the moment, the heat is preserved by the heat preservation layer 5 coated outside the furnace core 2 to prevent dissipation; when the solar heat exchange furnace is in a daytime environment, electricity is used in a peak electricity state, enterprises can exchange heat by leading a medium for heat exchange into the heat exchange tube 3 in the furnace core 2 from the medium inlet 11 and discharging the medium from the medium outlet 12, industrial production or living utilization is performed, dependence of the enterprises on peak electricity is greatly reduced, and production cost is reduced.
In addition to the embodiments described above, other embodiments of the utility model are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the utility model.
Claims (6)
1. The utility model provides a phase change energy storage device, includes furnace body (1), its characterized in that: a furnace core (2) is arranged in the furnace body (1), two ends of the furnace core (2) are sealed by tube plates to form an inner cavity, a plurality of heat exchange tubes (3) which are arranged in parallel are arranged in the inner cavity, the heat exchange tubes (3) are communicated with the tube plates at the two ends, the heat exchange tubes (3) are distributed along the vertical direction, and a medium for heat exchange flows from bottom to top;
the furnace core is characterized in that a metal energy storage medium is arranged in the inner cavity, the heat exchange tube (3) is immersed in the metal energy storage medium, a heating belt (4) for heating the metal energy storage medium to a molten state is wound outside the furnace core (2), and a plurality of rings of electromagnetic high-frequency coils are formed outside the furnace core (2) through the heating belt (4) in a electrifying mode.
2. The phase change energy storage device of claim 1, wherein: the two ends of the furnace body (1) are fixedly provided with sealing heads (13), and the sealing heads (13) at the two ends of the furnace body (1) are respectively formed with
A medium inlet (11) which is formed on one side of the furnace body (1) close to the ground and is communicated with the bottom of the heat exchange tube (3) for introducing a medium before heat exchange;
the medium outlet (12) is formed on one side of the furnace body (1) far away from the ground, is communicated with the top end of the heat exchange tube (3), and is used for discharging the heat exchanged medium.
3. The phase change energy storage device of claim 1, wherein: the metal energy storage medium is a metal with a melting point lower than that of iron, and comprises aluminum or lead.
4. The phase change energy storage device of claim 1, wherein: the furnace core (2) is provided with a feed inlet (6) and a discharge outlet (7) which are communicated with the inner cavity, and the heating belt (4) is positioned outside the furnace core (2) between the feed inlet (6) and the discharge outlet (7).
5. The phase change energy storage device of claim 1, wherein: the furnace core (2) is externally attached with an insulating layer (5), and the insulating layer (5) is covered between the furnace core (2) and the heating belt (4).
6. The phase change energy storage device of claim 2, wherein: the furnace body (1) is made of iron or magnetic steel, and the furnace core (2), the sealing head (13) and the heat exchange tube (3) are made of stainless steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223592416.6U CN219640454U (en) | 2022-12-29 | 2022-12-29 | Phase change energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223592416.6U CN219640454U (en) | 2022-12-29 | 2022-12-29 | Phase change energy storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219640454U true CN219640454U (en) | 2023-09-05 |
Family
ID=87808837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223592416.6U Active CN219640454U (en) | 2022-12-29 | 2022-12-29 | Phase change energy storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219640454U (en) |
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2022
- 2022-12-29 CN CN202223592416.6U patent/CN219640454U/en active Active
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