CN206531418U - A kind of stable supercooling energy storage equipment of cylindricality hydrous salt phase change material and energy-storage system - Google Patents
A kind of stable supercooling energy storage equipment of cylindricality hydrous salt phase change material and energy-storage system Download PDFInfo
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- CN206531418U CN206531418U CN201621161506.1U CN201621161506U CN206531418U CN 206531418 U CN206531418 U CN 206531418U CN 201621161506 U CN201621161506 U CN 201621161506U CN 206531418 U CN206531418 U CN 206531418U
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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
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The utility model is related to a kind of stable supercooling energy storage equipment of cylindricality hydrous salt phase change material and energy-storage system.The main body of the energy storage equipment is cylindrical container, and the bottom of the cylindrical container is hemispherical dome structure, and the top of the cylindrical container is the inlet of hydrous salt phase change material, and provided with the closure of hemispherical dome structure.This energy storage equipment reduces corner angle angle point, is more beneficial for phase-change material fusing；The problem of local roughness that container angle point causes increases is avoided simultaneously, the contact angle of crystalline phase and energy storage equipment vessel surface increase, improves critical nucleation energy, reduce the nucleation rate of hydrous salt phase change material, is more easy to realize stable be subcooled.Energy storage equipment inner surface of container is smooth, reduces the groove of inner surface, it is to avoid cannot not leave moltenly crystal grain, is equally beneficial for increasing the contact angle of crystalline phase and vessel surface, reduces phase-change material nucleation rate, beneficial to the stable supercooling of realization.
Description
Technical field
The utility model belongs to novel environment friendly high-efficiency energy storage system technical field, more particularly to a kind of cylindricality hydrous salt phase transition
Energy storage equipment and energy-storage system is subcooled in material settling out.
Background technology
Explosive population growth causes enormous pressure, and the energy high consumption and greenhouse gases height row to traditional energy with rapid economic development
Put the development for limiting traditional energy, solar energy is a kind of inexhaustible non-polluting energy sources, therefore solar energy is made
Turn into the focus that people explore for the energy of sustainable development.
But due to factors such as season, geographical position, weather conditions, solar energy has the drawbacks such as discontinuity, unstability, causes
It is supplied mismatches with peak demand.The utilization to solar energy can be strengthened with reference to high-efficiency energy-storage technology, particularly across season energy storage
The application of technology, i.e. summer utilize storage of solar energy energy, are released when transition season or winter need heat supply, then by the energy of storage
Put.Realize that the key of this process is the selection of energy storage material, the structure design and its application method of energy storage equipment.
Though sensible heat energy storage cost is low, simple system, its by temperature limiting, the too high temperature amount of enabling the system to loss compared with
Greatly, energy utilization rate is low.Sensible heat energy storage simultaneously is more in underground aquifers, grit layer etc., using the modes such as underground buried tube, required storage
Can be bulky, and it is high to geologic requirements.
Phase-changing energy storage material, is easily obtained, energy storage density is big, system bulk is small, in the storage and release of energy with material
The advantages of process keeping temperature is constant, is a kind of larger energy storage material of development potentiality.Wherein, organic phase change material such as paraffin,
Physical and chemical performance is stable, there is preferable reusing, and safety coefficient is high.But its thermal conductivity factor is smaller, filling is needed when using
The material of the increased thermal conductivities such as foam copper；On the other hand, organic phase change material is compared with most hydrated salt class phase transformation materials,
Storage density is smaller, therefore increases the volume and cost of energy storage system.
Hydrous salt phase change material, thermal conductivity factor is big, latent heat is big, storage density is big, cheap and easy to get, chemical attribute is good, application
In multiple fields.But most of hydrous salt phase change material supercooling is serious, and there is phase separation, and influence heat transfer efficiency and thermal cycle are steady
It is fixed.The relatively big supercooling degree that inorganic hydrous salt phase transition material occurs in use can make it in the case where not losing heat
Longer-term storage is realized, as the advantage realized across season long energy storage.
Utility model content
The purpose of this utility model is to provide a kind of stable supercooling energy storage equipment of cylindricality hydrous salt phase change material and accumulation of energy
System.
A kind of stable supercooling energy storage equipment of cylindricality hydrous salt phase change material, the main body of the energy storage equipment is cylindrical container, institute
The bottom for stating cylindrical container is hemispherical dome structure, and the top of the cylindrical container is the inlet of hydrous salt phase change material, and sets
There is the closure of hemispherical dome structure.
Preferably, joint seal of flanges is passed through between the closure and cylindrical container.
Preferably, the inner surface of the cylindrical container and closure is smooth.
Further, it is in addition to mechanical oscillation triggering device, ultrasonic wave triggering device, electromagnetic field triggering device, local low
One or more in warm triggering device.
Provided with the stable supercooling energy storage equipment of cylindricality hydrous salt phase change material in a kind of energy-storage system, the energy-storage system, and set
There is heat exchanging fluid device.
The stable supercooling energy storage equipment of the cylindricality hydrous salt phase change material, it is designed in energy-storage system according to actual conditions
Deployment scenarios, discharge spacing be configured with quantity according to actual place and service condition.
Preferably, the energy-storage system is externally provided with heat-insulation layer.
Preferably, the heat exchanging fluid device of the energy-storage system is connected to solar heat-preservation system.
The beneficial effects of the utility model are：
Energy storage equipment of the present utility model is effectively combined solar energy with hydrous salt phase change material, reduces traditional energy
Utilize, improve environmental benefit.Compared to traditional across season energy-storage system, using across the season accumulation of energy of hydrous salt phase change material
System, substantially reduces the thermal loss of transition season, improves energy storage efficiency.The apparatus structure is the sealing cylindricality without corner angle
Container, container bottom and closure are hemispherical dome structure, reduce corner angle angle point.In contrast to rectangle chamfering of the prior art
Energy storage equipment (as shown in Figure 2), energy storage equipment of the present utility model avoids the local roughness increase that container angle point is caused
Problem, increases the contact angle of crystalline phase and energy storage equipment vessel surface, improves critical nucleation energy, reduce hydrous salt phase transition
The nucleation rate of material, is more easy to realize stable supercooling.Energy storage equipment inner surface of container is smooth, reduces the groove of inner surface, it is to avoid
Crystal grain cannot not be left moltenly, is equally beneficial for increasing the contact angle of crystalline phase and vessel surface, phase-change material nucleation rate is reduced, beneficial to reality
Now stablize supercooling.From Fig. 3 (a) and (b) as can be seen that the utility model proposes column construction energy storage equipment realize phase-change material
The early stage heat time needed for stable supercooling is more shorter than rectangle fillet device, namely in shorter heat time scope interior cylindrical knot
Structure energy storage equipment is easier to realize stable supercooling than rectangle fillet device.
Brief description of the drawings
Fig. 1 a- Fig. 1 d are a kind of structure of the stable supercooling energy storage equipment of cylindricality hydrous salt phase change material described in embodiment 1
Schematic diagram；Wherein, Fig. 1 a are front view；Fig. 1 b are side view；Fig. 1 c are top view；Fig. 1 d are stereogram.
Fig. 2 is the structural representation of the energy storage equipment of rectangle fillet structure in the prior art.
Fig. 3 is for a kind of stable supercooling energy storage equipment of cylindricality hydrous salt phase change material described in embodiment 1 and in the prior art
Rectangle fillet structure energy storage equipment hydrous salt phase change material of the same race under same experimental conditions supercooling curve comparison figure；Its
In, (a) is cylindricality energy storage equipment surface temperature change under different temperatures；(b) it is rectangle fillet energy storage equipment table under different temperatures
Face temperature change.
Label declaration：1- cylindrical containers；2- closures；3- flanges.
Embodiment
The utility model is described further with reference to the accompanying drawings and detailed description.It is emphasized that following
Illustrate what is be merely exemplary, rather than in order to limit scope of the present utility model and its application.
Embodiment 1
The stable supercooling accumulation of energy dress of a kind of cylindricality hydrous salt phase change material for showing the utility model offer such as Fig. 1 a- Fig. 1 d
Put, apparatus structure is the cylindrical container 1 without corner angle, and the top of cylindrical container 1 is the inlet of hydrous salt phase change material, and sets
There is closure 2.Connected between cylindrical container 1 and closure 2 by flange 3, strengthen sealing.Cause phase transformation for further reduction
The corner angle of material nucleation, the bottom of cylindrical container 1 and closure 2 are hemispherical dome structure, while cylindrical container 1 and closure 2
Inner surface require it is smooth, reduce cylindricality energy storage equipment inner surface groove, it is to avoid do not leave molten crystal grain, at the same increase crystalline phase
With the contact angle of vessel surface, phase-change material nucleation rate is reduced, makes it be more easy to realize stable supercooling.The material of the energy storage equipment
Heat transfer effect, heat resistance, intensity and corrosion resistance should be met (as hydration salting liquid is no more than to its corrosion rate corrosion rate
0.1mm/a) etc. require, can use but be not limited to stainless steel material, 304 stainless steel materials, wall thickness ginseng are used in the present embodiment
Value is examined for 1.2mm, the surface area of cylindrical container 1 can also be appropriately adjusted according to actual conditions.
The device can realize (across season) accumulation of energy for a long time, and radiation loss is small, and energy storage efficiency is high, it is easy to process, and cost is low.
A kind of application process of the stable supercooling energy storage equipment of cylindricality hydrous salt phase change material, summer solar energy enriches period,
Hydrous salt phase change material is heated using solar energy, it is completely melt and by energy storage, there will be certain degree of superheat
Liquid hydrous salt phase change material injection inner wall smooth cylindricality energy storage equipment in, transition season hydrous salt phase change material is to be subcooled
Liquid form is stable in the presence of in cylindricality energy storage equipment, until energy is released to energy storage equipment triggering crystallization when having heat demand.
Its concrete application method is as follows：
The hydrous salt phase change material can select but be not limited to Na2S2O3·5H2O or CH3COONa·3H2O.To accumulation of energy
During device injection liquid hydrous salt phase change material, air need to be reduced as far as possible and entered, injection is finished closure 2 and post immediately
Describe that device 1 is connected with flange 3, strengthen sealing property, prevent from large quantity of air from entering container to reduce triggering phase transformation factor.It is described
The volume that energy storage equipment charges liquid hydrous salt phase change material is the 85%~95% of the volume of cylindrical container 1, wherein 90% is left
Right best results.The energy storage equipment and heat exchanging fluid device are placed in the hot water storage tank with travel(l)ing rest, are easy to regulation
The distance and number of the stable supercooling energy storage equipment of the cylindricality hydrous salt phase change material.The cylindricality energy storage equipment is in hot water storage tank
Middle to design its deployment scenarios according to actual conditions, discharge spacing is configured with quantity according to actual place and service condition.Store
Need to add heat-insulation layer outside boiler, it is proposed that using the thick polyurethane heat-insulations of 50mm.
Heat exchanging fluid device in the hot water storage tank is connected to solar water heater, utilizes solar water heater heat exchanging
Fluid (water) is heated, and heat exchanging fluid exchanges heat to hydrous salt phase change material, it is completely melt and is formed with certain
The liquid hydrous salt phase change material of the degree of superheat, by energy storage.
The stable supercooling energy storage equipment of the cylindricality hydrous salt phase change material is moved out hot water storage tank after the completion of accumulation of heat,
Tilt and stand in undisturbed indoor environment, its top is to have flange end upward, the angle suggestion with ground is 7.66 °.Tool
There is the liquid hydrous salt phase change material of certain degree of superheat to cool down indoors under undisturbed environmental condition, when being cooled to environment temperature
When, hydrous salt phase change material is in supercooled liquid, and can be stabilized, and is finally present in post steadily in the long term in supercooled liquid form
In shape energy storage equipment, heat of solution is stored.
When needing heat supply (heat demand in such as winter), the trigger position of energy storage equipment is set according to actual demand,
It is triggered using certain or a variety of triggering modes, mechanical oscillation can be used to cylindricality energy storage equipment according to the actual requirements, surpassed
The triggering modes such as sound wave, electromagnetic field or topical hypothermia, hydrous salt phase change material of the induction in supercooled liquid is undergone phase transition, and is in
The liquid hydrous salt phase change material moment of supercooled state starts crystallization, discharges the heat of fusion of its storage.
Claims (7)
1. the stable supercooling energy storage equipment of a kind of cylindricality hydrous salt phase change material, it is characterised in that the main body of the energy storage equipment is post
Device is described, the bottom of the cylindrical container is hemispherical dome structure, and the top of the cylindrical container is the note of hydrous salt phase change material
Entrance, and the closure provided with hemispherical dome structure.
2. a kind of cylindricality hydrous salt phase change material is stable according to claim 1 is subcooled energy storage equipment, it is characterised in that described
Pass through joint seal of flanges between closure and cylindrical container.
3. a kind of cylindricality hydrous salt phase change material is stable according to claim 1 is subcooled energy storage equipment, it is characterised in that described
The inner surface of cylindrical container and closure is smooth.
4. a kind of cylindricality hydrous salt phase change material is stable according to claim 1 is subcooled energy storage equipment, it is characterised in that also wrap
Include mechanical oscillation triggering device, ultrasonic wave triggering device, electromagnetic field triggering device, one kind in topical hypothermia's triggering device or several
Kind.
5. a kind of accumulation of energy of the stable supercooling energy storage equipment of cylindricality hydrous salt phase change material based on described in claim any one of 1-4
Heat exchanging fluid device is additionally provided with system, the energy-storage system.
6. a kind of energy-storage system according to claim 5, it is characterised in that the outside of the energy-storage system is provided with heat-insulation layer.
7. a kind of energy-storage system according to claim 5, it is characterised in that the heat exchanging fluid device connection of the energy-storage system
To solar heat-preservation system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621161506.1U CN206531418U (en) | 2016-11-01 | 2016-11-01 | A kind of stable supercooling energy storage equipment of cylindricality hydrous salt phase change material and energy-storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621161506.1U CN206531418U (en) | 2016-11-01 | 2016-11-01 | A kind of stable supercooling energy storage equipment of cylindricality hydrous salt phase change material and energy-storage system |
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| Publication Number | Publication Date |
|---|---|
| CN206531418U true CN206531418U (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621161506.1U Expired - Fee Related CN206531418U (en) | 2016-11-01 | 2016-11-01 | A kind of stable supercooling energy storage equipment of cylindricality hydrous salt phase change material and energy-storage system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050676A (en) * | 2020-09-14 | 2020-12-08 | 西安交通大学 | Phase change energy storage strengthening device with built-in ultrasonic generator |
| CN113433160A (en) * | 2021-06-25 | 2021-09-24 | 中国科学院青海盐湖研究所 | Method for confirming eutectic point of eutectic hydrated salt system and application thereof |
| US11365941B2 (en) | 2018-10-29 | 2022-06-21 | Azelio Ab | Thermal energy storage assembly |
-
2016
- 2016-11-01 CN CN201621161506.1U patent/CN206531418U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11365941B2 (en) | 2018-10-29 | 2022-06-21 | Azelio Ab | Thermal energy storage assembly |
| CN112050676A (en) * | 2020-09-14 | 2020-12-08 | 西安交通大学 | Phase change energy storage strengthening device with built-in ultrasonic generator |
| CN112050676B (en) * | 2020-09-14 | 2022-02-18 | 西安交通大学 | Phase change energy storage strengthening device with built-in ultrasonic generator |
| CN113433160A (en) * | 2021-06-25 | 2021-09-24 | 中国科学院青海盐湖研究所 | Method for confirming eutectic point of eutectic hydrated salt system and application thereof |
| CN113433160B (en) * | 2021-06-25 | 2022-09-20 | 中国科学院青海盐湖研究所 | Method for confirming eutectic point of eutectic hydrated salt system and application thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170929 Termination date: 20181101 |
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| CF01 | Termination of patent right due to non-payment of annual fee |