CN212512635U - Phase change energy storage box - Google Patents
Phase change energy storage box Download PDFInfo
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- CN212512635U CN212512635U CN202020132224.9U CN202020132224U CN212512635U CN 212512635 U CN212512635 U CN 212512635U CN 202020132224 U CN202020132224 U CN 202020132224U CN 212512635 U CN212512635 U CN 212512635U
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- phase change
- heat exchange
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- change material
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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
Abstract
The utility model provides a phase change energy storage case, phase change energy storage case include the box and fill in the inside phase change material of box, inside compressible elastomeric element and the heat exchange assemblies of being provided with of box, elastomeric element be used for occupying the volume inflation volume that the box volume produced because of the phase transition as phase change material. The utility model discloses an increase compressible elastomeric element in phase change energy storage incasement portion, improved because of the box fracture problem that phase change material solid-liquid volume expansion caused, effectively improve the transportation safety and the application safety of phase change energy storage case in actual engineering.
Description
Technical Field
The utility model belongs to the technical field of the energy is stored, a phase change energy storage box is related to, especially, relate to a prevent phase change energy storage box of box fracture.
Background
The phase change energy storage technology is to store energy in advance by using a phase change material and release the energy when needed. Therefore, the method can be used for solving the problems that the supply and the demand of the heat energy are not matched in time, space or intensity and the like, and the energy utilization rate is improved to the maximum extent. The method has wide application prospect in the fields of solar heat utilization, electric power peak shifting and valley filling, waste heat and waste heat recycling and the like.
CN110375572A discloses a phase change energy storage tank based on phase change material, which includes: the upper end of the box body is provided with a sealing box cover in a matching way; five phase-change material cavities are formed in the box body, two adjacent phase-change material cavities are communicated through a heating coil, and phase-change materials are filled in the five phase-change material cavities; the right side of the upper end of the box body is communicated with a heat medium inlet and a heat medium outlet, and the left side of the lower end of the box body is communicated with a cold medium inlet and a cold medium outlet.
CN110579128A discloses a phase change energy storage tank with automatic induced crystallization, comprising: the box body is provided with a phase-change material inlet and a phase-change material outlet; the nucleating agent storage box is arranged on the side wall inside the box body and is used for providing nucleating agent for the phase-change material; the heat exchange coil is arranged in the box body and is provided with a heat exchange inlet and a heat exchange outlet, and the heat exchange medium in the heat exchange coil transfers the energy in the box body to the outside of the box body; the phase change material is filled in the box body and used for storing phase change energy; the temperature measuring device is used for monitoring the temperature of the phase-change material; and the control device controls the nucleating agent storage box to release the nucleating agent through the temperature monitored by the temperature measuring device.
CN110617728A discloses a phase change energy storage device based on phase change inducing tube, which includes: the energy storage box is used for filling a phase change energy storage material; the heat exchange tube is arranged in the energy storage box, and a heat carrier flows through the heat exchange tube and is used for exchanging heat with the phase change energy storage material surrounding the heat exchange tube; the phase change inducing pipe is communicated with the energy storage box, the phase change energy storage material is filled in the phase change inducing pipe, and the phase change inducing pipe is arranged in the cold area; the air in the cold area can enter the phase change inducing pipe to enable the phase change energy storage material in the phase change inducing pipe to generate local phase change to form a nucleating agent for inducing the phase change of the phase change energy storage material in the energy storage box to form nucleation phase change.
The most important is the energy storage box among the phase change energy storage system, however the design simple structure of energy storage box on the existing market has a lot of problems, can't realize the packing and the change of material, and the expansion of the vertical material that the energy storage box on the existing market only considered especially to do not consider the problem that the expansion of horizontal direction material brought, consequently the utility model discloses a, based on the not enough of current heat storage box, carried out relevant improvement.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a phase change energy storage box, the utility model discloses an increase compressible elastomeric element in phase change energy storage box inside, improved because of the box fracture problem that phase change material solid-liquid volume expansion caused, effectively improve the transportation safety and the application safety of phase change energy storage box in actual engineering.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a phase change energy storage case, phase change energy storage case include the box and fill in the inside phase change material of box, inside compressible elastomeric element and the heat exchange assemblies of being provided with of box, elastomeric element be used for occupying the volume inflation volume that the box volume produced because of the phase transition as phase change material.
The utility model discloses an increase compressible elastomeric element in phase change energy storage incasement portion, improved because of the box fracture problem that phase change material solid-liquid volume expansion caused, effectively improve the transportation safety and the application safety of phase change energy storage case in actual engineering.
As a preferred technical scheme of the utility model, the box outer wall be provided with at least one reinforcement.
The reinforcing members are transversely arranged on two sides of the outer wall of the box body side by side.
The reinforcing member is a reinforcing rod.
As an optimized technical scheme of the utility model, elastomeric element vertically set up in the box center, heat exchange assemblies set up around elastomeric element.
As an optimized technical scheme of the utility model, heat exchange assemblies include first heat exchange assemblies and the second heat exchange assemblies that the bottom is connected, first heat exchange assemblies and second heat exchange assemblies set up respectively in elastomeric element both sides.
The first heat exchange assembly and the second heat exchange assembly respectively comprise at least one group of heat exchange pieces which are sequentially connected along the flow direction of the heat exchange medium.
As a preferred technical scheme of the utility model, elastomeric element be compressible grid.
The heat exchange piece is a snakelike heat exchange tube or a U-shaped heat exchange tube which is transversely arranged.
As an optimized technical scheme, the box top be provided with heat transfer medium import and heat transfer medium export, heat transfer medium flows in by the heat transfer medium import and flows through in proper order behind first heat exchange assembly and the second heat exchange assembly by the heat transfer medium export outflow.
The top of the box body is provided with an exhaust port and a phase-change material filling port.
The utility model discloses in, the phase change material filling opening still has cleaning equipment's function except that being used for filling phase change material concurrently.
The utility model discloses in, the partial steam that the mainly used phase change material of gas vent produced because of the temperature risees can be followed upper portion and got rid of to box internal pressure is too big, causes the box internal and external differential pressure different.
And a sewage draining outlet is formed in the bottom of the box body.
As an optimized technical proposal of the utility model, the box body is a double-layer structure shell.
The box body comprises an outer shell and an inner shell, and heat insulation materials are filled between the outer shell and the inner shell.
As an optimized technical proposal of the utility model, the shell material is a steel plate or an iron sheet.
The material of the inner shell is stainless steel.
The heat insulation material comprises a porous heat insulation material, a loose heat insulation material, a rubber and plastic heat insulation material, a phenolic resin foam material or an aluminum silicate heat insulation material.
The heat-insulating material comprises foamed cement, glass wool or rock wool heat-insulating felt.
As an optimized technical proposal of the utility model, the phase-change material is a heat storage phase-change material or a cold storage phase-change material.
The phase change material is an inorganic phase change material, an organic phase change material, a low-temperature cold accumulation phase change material or a sensible heat material.
The phase change material is a hydrated salt phase change material.
As an optimized technical scheme, the phase change energy storage box still including setting up in the outside heat transfer medium circulation pipeline of box, heat transfer medium import and heat transfer medium export are connected respectively to heat transfer medium circulation pipeline's both ends.
And the heat exchange medium circulating pipeline is provided with a circulating pump.
The utility model provides a phase change energy storage box is including heat accumulation heat release process or cold-storage cold release process in the use.
The heat storage and release process specifically comprises the following steps: a high-temperature heat exchange medium is introduced into the heat exchange assembly to heat the heat storage phase change material filled in the box body, and the heat storage phase change material is heated to generate phase change to cause volume expansion to extrude the elastic part, so that the heat storage process is completed; the low-temperature heat exchange medium is introduced into the heat exchange assembly to exchange heat with the high-temperature heat storage phase change material, and the heated heat exchange medium is discharged to a heat supply user to finish the heat release process;
the cold accumulation and release process specifically comprises the following steps: the low-temperature heat exchange medium is introduced into the heat exchange assembly to cool the cold accumulation phase change material filled in the box body, and the temperature of the cold accumulation phase change material is reduced, so that the cold accumulation process is completed; the high-temperature heat exchange medium is introduced into the heat exchange assembly to exchange heat with the low-temperature cold accumulation phase change material, the cold accumulation phase change material undergoes phase change when the temperature rises, so that the elastic component is extruded by volume expansion, and the cooled heat exchange medium is discharged to a user needing cooling to finish the cooling process.
Exemplarily, take the heat release process of heat accumulation as an example, the utility model provides a phase change energy storage box includes following two steps of processes in the in-service use:
(1) the heat storage process: the electric energy when utilizing the millet electricity heats carrier water and makes its load heat, flows in by the heat transfer medium import, through the heat transfer piece, realizes heat transfer of heat flow carrier and the peripheral phase change material of heat transfer piece through the heat transfer piece to flow out by the heat transfer medium export. And after enough time, the sensible heat in the heat carrier is gradually transferred to the phase-change material, the temperature of the phase-change material is raised until the phase-change material reaches the phase-change temperature and triggers the phase change of the phase-change material, and the storage of the sensible heat and the latent heat is completed. Meanwhile, the phase-change material is changed from a solid state to a liquid state in the process, and the volume of the phase-change material expands, so that the surrounding phase-change material extrudes the compressible grid to enable the compressible grid to contract, the expansion amount of the phase-change material is accommodated, and the cracking of the periphery of the box body caused by the volume expansion is prevented under the condition that no expansion allowance exists.
(2) The heat release process: in the daytime, the backwater of the heating radiator flows through the heat exchange medium inlet and enters the heat exchange piece under the condition of no electricity, and the low-temperature backwater in the heating radiator exchanges energy with the high-temperature phase-change material through the heat exchange piece, so that the phase-change material releases heat. The return water of the heating system flows out from the outlet of the heat exchange medium after being heated up and leads to the heat supply users.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an increase compressible elastomeric element and transversely consolidate the box shell in phase change energy storage incasement portion, improve because of the box fracture problem that phase change material solid-liquid volume expansion caused, effectively improve the transportation safety and the application safety of phase change energy storage case in actual engineering.
Drawings
Fig. 1 is a schematic structural diagram of a phase change energy storage box according to an embodiment of the present invention.
Wherein, 1-a heat exchange medium inlet; 2-heat exchange medium outlet; 3-heat exchange member; 4-a compressible grid; 5-a phase change material; 6-a sewage draining outlet; 7-a reinforcement; 8-a housing; 9-inner shell; 10-heat insulating material; 11-phase change material fill port; 12-exhaust port.
Detailed Description
It is to be understood that in the description of the present invention, the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected" and "connected" in the description of the present invention are to be construed broadly, and may for example be fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
In a specific embodiment, the utility model provides a phase change energy storage box, phase change energy storage box as shown in figure 1, including the box and fill in the inside phase change material 5 of box, the inside compressible elastomeric element and the heat transfer subassembly of being provided with of box, wherein, elastomeric element is used for occupying the volume expansion volume that the box volume produced because of the phase transition as phase change material 5.
The box outer wall is provided with at least one reinforcement 7, and reinforcement 7 transversely sets up side by side in box outer wall both sides, and specifically, reinforcement 7 can be selected as the anchor strut.
The elastic component is longitudinally arranged in the center of the box body, and the heat exchange assembly is arranged around the elastic component. Further, the heat exchange assembly comprises a first heat exchange assembly and a second heat exchange assembly which are connected with each other at the bottoms, the first heat exchange assembly and the second heat exchange assembly are respectively arranged on two sides of the elastic component, the first heat exchange assembly and the second heat exchange assembly respectively comprise at least one group of heat exchange pieces 3 which are sequentially connected along the flow direction of a heat exchange medium, and as shown in fig. 1, the first heat exchange assembly and the second heat exchange assembly respectively comprise 6 groups of heat exchange pieces 3 which are sequentially connected. Specifically, the elastic member may be selected as a compressible grid 4, and the heat exchange member 3 may be selected as a laterally arranged serpentine heat exchange tube or a U-shaped heat exchange tube.
The top of the box body is provided with a heat exchange medium inlet 1 and a heat exchange medium outlet 2, and heat exchange medium flows in from the heat exchange medium inlet 1 and flows through the first heat exchange assembly and the second heat exchange assembly in sequence and then flows out from the heat exchange medium outlet 2. The top of the box body is also provided with an exhaust port 12 and a phase change material 5 filling port 11, and the bottom of the box body is provided with a sewage draining port 6.
The box body is a double-layer structure shell and comprises an outer shell 8 and an inner shell 9, and heat insulation materials 10 are filled between the outer shell 8 and the inner shell 9. The outer shell 8 can be made of steel plates or iron sheets, and the inner shell 9 can be made of stainless steel. Insulation 10 may optionally include one or a combination of at least two of porous insulation 10, loose insulation 10, rubber and plastic insulation 10, phenolic foam or aluminum silicate insulation 10, and specifically, one or a combination of at least two of foamed cement, glass wool, or rock wool insulation blanket.
The phase change material 5 is a heat storage phase change material or a cold storage phase change material, further, the phase change material 5 is an inorganic phase change material, an organic phase change material, a low-temperature cold storage phase change material or a sensible heat material, and further, the phase change material 5 is a hydrated salt phase change material.
The phase change energy storage box further comprises a heat exchange medium circulation pipeline arranged outside the box body, two ends of the heat exchange medium circulation pipeline are respectively connected with a heat exchange medium inlet 1 and a heat exchange medium outlet 2, and a circulation pump is arranged on the heat exchange medium circulation pipeline.
In another embodiment, the present invention provides a method for using the phase change energy storage box, wherein the phase change energy storage box comprises a heat storage and release process or a cold storage and release process.
The heat storage and release process specifically comprises the following steps: a high-temperature heat exchange medium is introduced into the heat exchange assembly to heat the heat storage phase change material filled in the box body, and the heat storage phase change material is heated to generate phase change to cause volume expansion to extrude the elastic part, so that the heat storage process is completed; and introducing a low-temperature heat exchange medium into the heat exchange assembly to exchange heat with the high-temperature heat storage phase change material, and discharging the heated heat exchange medium to a heat supply user to finish the heat release process.
The cold accumulation and release process comprises the following steps: the low-temperature heat exchange medium is introduced into the heat exchange assembly to cool the cold accumulation phase change material filled in the box body, and the temperature of the cold accumulation phase change material is reduced, so that the cold accumulation process is completed; the high-temperature heat exchange medium is introduced into the heat exchange assembly to exchange heat with the low-temperature cold accumulation phase change material, the cold accumulation phase change material undergoes phase change when the temperature rises, so that the elastic component is extruded by volume expansion, and the cooled heat exchange medium is discharged to a user needing cooling to finish the cooling process.
Example 1
The embodiment provides a use method of a phase change energy storage box, wherein a heat storage phase change material, namely a trihydrate sodium acetate hydrate phase change material (the phase change temperature is 58 ℃) is filled in the phase change energy storage box, when the phase change energy storage box is used, a heat storage and release process occurs, and the use method specifically comprises the following steps:
heating carrier water by utilizing electric energy in valley electricity to enable the temperature of the carrier water to rise to 80 ℃, introducing the high-temperature carrier water into a heat exchange assembly to heat a sodium acetate trihydrate hydrous salt phase change material filled in a box body, and enabling the sodium acetate trihydrate hydrous salt phase change material to rise to 58 ℃ to generate phase change to cause volume expansion to extrude an elastic component to finish a heat storage process;
(II) under the condition of no electricity in the daytime, if return water at 35 ℃ discharged by the heating radiator is introduced into the heat exchange assembly to exchange heat with the sodium acetate trihydrate hydrated salt phase change material, the return water is discharged to a heat supply user after being heated to 50 ℃, and the heat release process is completed.
Example 2
The embodiment provides a use method of a phase change energy storage box, wherein a heat storage phase change material magnesium nitrate hexahydrate hydrated salt phase change material (the phase change temperature is 89 ℃) is filled in the phase change energy storage box, and the phase change energy storage box generates a heat storage and release process when in use, and the use method specifically comprises the following steps:
heating carrier water by utilizing electric energy in valley electricity to enable the temperature of the carrier water to rise to 95 ℃, introducing the high-temperature carrier water into a heat exchange assembly to heat magnesium nitrate hexahydrate hydrated salt phase change material filled in a box body, and enabling the magnesium nitrate hexahydrate hydrated salt phase change material to rise to 89 ℃ to generate phase change to cause volume expansion to extrude an elastic component to finish the heat storage process;
(II) under the condition of no electricity in the daytime, if 50 ℃ return water discharged by the heating radiator is introduced into the heat exchange assembly to exchange heat with the magnesium nitrate hexahydrate hydrated salt phase-change material, the return water is discharged to a heat supply user after being heated to 75 ℃, and the heat release process is completed.
Example 3
The embodiment provides a use method of a phase change energy storage box, wherein a low-temperature phase change cold storage material (phase change temperature is-5 ℃) is filled in the phase change energy storage box, and the phase change energy storage box performs a cold storage and release process when in use, and the use method specifically comprises the following steps:
the method comprises the following steps that (I) a compressor during valley electricity is used for refrigerating, so that the temperature of carrier cold liquid (silicon oil) is-15 ℃, when the low-temperature carrier cold liquid cools low-temperature phase-change cold storage materials filled in a box body through a heat exchange assembly, and the temperature of the low-temperature phase-change cold storage materials is reduced to-5 ℃, the low-temperature phase-change cold storage materials are changed from a liquid state to a solid state, and the cold storage process is completed;
and (II) under the condition of no electricity in daytime, the return water of 12 ℃ discharged by the air conditioner is introduced into the heat exchange assembly to exchange heat with the low-temperature phase change cold storage material, the temperature of the return water is reduced to 7 ℃, the return water is introduced to an inlet of the air conditioner and is used by a user air conditioner, and the low-temperature phase change cold storage material completes the cold release process.
The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.
Claims (10)
1. The utility model provides a phase change energy storage case, its characterized in that, phase change energy storage case include the box and fill in the inside phase change material of box, the inside compressible elastomeric element and the heat exchange assembly of being provided with of box, elastomeric element be used for occupying the box volume as the volume inflation volume that phase change material produced because of the phase transition.
2. The phase change energy storage tank as claimed in claim 1, wherein the outer wall of the tank body is provided with at least one reinforcement;
the reinforcing members are transversely arranged on two sides of the outer wall of the box body side by side;
the reinforcing member is a reinforcing rod.
3. The phase change energy storage tank as claimed in claim 1, wherein the elastic member is longitudinally arranged at the center of the tank body, and the heat exchange assembly is arranged around the elastic member.
4. The phase change energy storage tank as claimed in claim 3, wherein the heat exchange assembly comprises a first heat exchange assembly and a second heat exchange assembly which are connected with each other at the bottoms, and the first heat exchange assembly and the second heat exchange assembly are respectively arranged at two sides of the elastic component;
the first heat exchange assembly and the second heat exchange assembly respectively comprise at least one group of heat exchange pieces which are sequentially connected along the flow direction of the heat exchange medium.
5. The phase change energy storage tank as claimed in claim 4, wherein the resilient member is a compressible grid;
the heat exchange piece is a snakelike heat exchange tube or a U-shaped heat exchange tube which is transversely arranged.
6. The phase-change energy storage box according to claim 1, wherein a heat exchange medium inlet and a heat exchange medium outlet are formed in the top of the box body, and heat exchange medium flows in from the heat exchange medium inlet, sequentially flows through the first heat exchange assembly and the second heat exchange assembly, and then flows out from the heat exchange medium outlet;
the top of the box body is provided with an exhaust port and a phase-change material filling port;
and a sewage draining outlet is formed in the bottom of the box body.
7. The phase-change energy storage tank as claimed in claim 1, wherein the tank body is a double-layer shell;
the box body comprises an outer shell and an inner shell, and heat insulation materials are filled between the outer shell and the inner shell.
8. The phase change energy storage tank as claimed in claim 7, wherein the shell material is steel plate or iron sheet;
the material of the inner shell is stainless steel.
9. The phase change energy storage tank as claimed in claim 1, wherein the phase change material is a heat storage phase change material or a cold storage phase change material;
the phase change material is an inorganic phase change material, an organic phase change material, a low-temperature cold accumulation phase change material or a sensible heat material;
the phase change material is a hydrated salt phase change material.
10. The phase-change energy storage tank as claimed in claim 1, further comprising a heat exchange medium circulation pipeline arranged outside the tank body, wherein two ends of the heat exchange medium circulation pipeline are respectively connected with the heat exchange medium inlet and the heat exchange medium outlet;
and the heat exchange medium circulating pipeline is provided with a circulating pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020132224.9U CN212512635U (en) | 2020-01-20 | 2020-01-20 | Phase change energy storage box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020132224.9U CN212512635U (en) | 2020-01-20 | 2020-01-20 | Phase change energy storage box |
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| Publication Number | Publication Date |
|---|---|
| CN212512635U true CN212512635U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020132224.9U Active CN212512635U (en) | 2020-01-20 | 2020-01-20 | Phase change energy storage box |
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| CN (1) | CN212512635U (en) |
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2020
- 2020-01-20 CN CN202020132224.9U patent/CN212512635U/en active Active
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