CN114608209A - Tubular solar phase-change heat accumulator - Google Patents
Tubular solar phase-change heat accumulator Download PDFInfo
- Publication number
- CN114608209A CN114608209A CN202210405097.9A CN202210405097A CN114608209A CN 114608209 A CN114608209 A CN 114608209A CN 202210405097 A CN202210405097 A CN 202210405097A CN 114608209 A CN114608209 A CN 114608209A
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- China
- Prior art keywords
- heat accumulator
- tree
- heat exchange
- heat
- shell
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/10—Arrangements for storing heat collected by solar heat collectors using latent heat
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The invention provides a tubular solar phase-change heat accumulator which comprises a heat accumulator shell, wherein a tree-shaped fin heat exchange core body is arranged inside the heat accumulator shell, a phase-change material is filled between the tree-shaped fin heat exchange core body and the heat accumulator shell, a water inlet is formed in one end of the heat accumulator shell, and a water outlet is formed in the other end of the heat accumulator shell. According to the invention, the tree-shaped heat exchange fins are used as heat exchange media, so that the heat storage rate of the solar heat accumulator can be greatly improved; the phase-change material is adopted, so that the heat storage capacity of the heat accumulator is improved while the volume of the heat accumulator is not increased.
Description
Technical Field
The invention relates to the technical field of solar heat storage, in particular to a tubular solar phase change heat accumulator.
Background
The solar heat storage related technology is beneficial to solving the problems of resource shortage, energy shortage and the like. The phase-change heat storage technology has the advantages of stable heat absorption and release temperature, large energy storage density, easy control of phase-change process and the like, and is an important technical means for realizing 'peak shifting and valley filling' of the current heat. Compared with a plate-type phase change heat accumulator, the tubular solar phase change heat accumulator has the advantages of low cost and high controllability, and therefore, the tubular solar phase change heat accumulator is widely applied to production and life. The tubular solar phase change heat accumulator on the market at present has the problems of low heat accumulation rate and small heat accumulation amount.
Disclosure of Invention
The invention aims to provide a tubular solar phase change heat accumulator which can greatly improve the heat accumulation rate of the solar heat accumulator and improve the heat storage capacity of the heat accumulator.
According to one purpose of the invention, the tubular solar phase change heat accumulator comprises a heat accumulator shell, a tree-shaped fin heat exchange core is arranged inside the heat accumulator shell, a phase change material is filled between the tree-shaped fin heat exchange core and the heat accumulator shell, a water inlet is formed in one end of the heat accumulator shell, and a water outlet is formed in the other end of the heat accumulator shell.
Further, the heat accumulator shell comprises a fixed shell and a detachable shell, and the detachable shell is detachably connected with the fixed shell.
Further, the fixed housing and the detachable housing are both cylindrical.
Further, the fixed shell and the detachable shell are connected with a flange.
Further, a sealing ring is arranged between the fixed shell and the detachable shell.
Furthermore, the fixed shell and the detachable shell are internally provided with connecting grooves used for being connected with the tree-shaped fin heat exchange core body, and the tree-shaped fin heat exchange core body is connected with the connecting grooves.
Furthermore, a water inlet connector is arranged at one end of the tree-shaped fin heat exchange core body, a water outlet connector is arranged at the other end of the tree-shaped fin heat exchange core body, and a heat exchange channel is arranged in the middle of the tree-shaped fin heat exchange core body.
Furthermore, the water inlet is connected with the water inlet joint, and the water outlet is connected with the water outlet joint.
Further, sealing rings are arranged between the water inlet and the water inlet joint and between the water outlet and the water outlet joint.
Further, the tree-shaped heat exchange fin core body is formed by adopting a 3D printing technology.
According to the technical scheme, the tree-shaped heat exchange fins are used as heat exchange media, so that the heat storage rate of the solar heat accumulator can be greatly improved; the phase-change material is adopted, so that the heat storage capacity of the heat accumulator is improved while the volume of the heat accumulator is not increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a front view of the embodiment of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2 in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a phase change material filling condition in FIG. 3 according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a tree-shaped heat exchange fin core according to an embodiment of the present invention;
in the figure, 1, a right end shell; 2. a left-end detachable housing; 3. a tree-shaped fin heat exchange core body; 31. a left end water inlet joint; 32. a water outlet joint at the right end; 33. a heat exchange channel; 4. a left end water inlet; 5. a water outlet at the right end; 6. a phase change material; 7. and (4) a flange.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "coupled" are to be construed broadly and may include, for example, fixed connections, removable connections, or integral connections; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1-5, a tubular solar phase change heat accumulator, the heat accumulator is of a circular structure as a whole, and comprises a right end shell 1 and a left end detachable shell 2, wherein the right end shell 1 and the left end detachable shell 2 are of a circular structure, a flange 7 connected with the left end detachable shell 2 is arranged at one end of the right end shell 1, a flange connected with the right end shell 1 is arranged at one end of the left end detachable shell 2, the right end shell 1 and the left end detachable shell 2 are connected through bolts, and the flanges mounted on the walls of the tubes are fastened.
The right-end shell 1 and the left-end detachable shell 2 form a shell structure of a hollow structure through flange connection, and a tree-shaped fin heat exchange core body 3 is installed in the inner space of the shell. The tree-shaped heat exchange fin core body 3 is fixed through the pre-tightening force of bolt fastening when the fixed shell body 1 is connected with the detachable shell body 2.
The phase change material 6 is arranged inside the heat accumulator integral shell formed by the right end shell 1 and the left end detachable shell 2, and the phase change material 6 is filled between the inside of the heat accumulator integral shell and the tree-shaped fin heat exchange core body 3. This embodiment may use paraffin as the phase change material.
The tree-shaped fin heat exchange core body 3 is provided with a left end water inlet connector 31 and a right end water outlet connector 32, and a heat exchange channel 33 of the fin heat exchange core body is formed; the other end of the right casing 1 is provided with a right water outlet 5 connected with a right water outlet connector 32, and the other end of the left detachable casing 2 is provided with a left water inlet 4 connected with a left water inlet connector 31. The left end water inlet 4 and the right end water outlet 5 form a connecting groove for fixing the tree-shaped fin heat exchange core body 3, and the tree-shaped fin heat exchange core body 3 is fixed. The left water inlet 4 is connected with a left water inlet joint 31 of the tree-shaped fin heat exchange core body 3 and is used for introducing external hot fluid and fluid to be heated; the right water outlet 5 is connected with the right water outlet connector 32 of the tree-shaped fin heat exchange core 3, and is used for connecting external hot fluid to a backflow channel and connecting heated fluid to a heat supply channel. When the tree-shaped fin heat exchange core body 3 is installed with the hollow structure formed between the right end shell body 1 and the left end detachable shell body 2, a sealing ring is arranged.
A sealing ring is arranged at the connecting part between the left water inlet joint 31 and the left water inlet 4; a sealing ring is arranged at the connecting part between the right water outlet joint 32 and the right water outlet 5. The connection of the left water inlet joint 31 and the left water inlet 4 and the connection of the right water outlet joint 32 and the right water outlet 5 are fastened by adopting a pressing head.
In this embodiment, the left water inlet joint 31 and the right water outlet joint 32 are respectively communicated with the left water inlet 4 and the right water outlet 5, and form a heat exchange channel 33 in the tree-shaped fin heat exchange core 3, and the heat exchange channel 33 is used for heat exchange fluid to transfer heat to the tree-shaped fins of the tree-shaped fin heat exchange core 3.
The shell 2 can be dismantled at the left end and is used for quickly dismantling the heat accumulator and maintaining the interior of the heat accumulator. Phase change material injection holes are formed in the right-end shell 1 and the left-end detachable shell 2 and used for filling the phase change material 6.
In this embodiment, the tree-shaped heat exchange fin core 3 is formed by a 3D printing technology, the tree-shaped heat exchange fin core 3 is designed based on an S I MP method, specifically, topology optimization design is performed on the inside of the heat accumulator, and after a volume factor is defined, a self-adaptive tree structure is generated by taking the objective function of minimizing the target area average temperature. Compared with a phase change heat accumulator with a conventional straight heat exchange fin core, the tree-shaped heat exchange fin core 3 has the average heat storage rate of 1.4 times under the same size, but the actual average heat storage rate needs to be multiplied by the working condition coefficient of 0.8-1 under different actual working conditions.
Compared with a phase change heat accumulator with a conventional straight heat exchange fin core, the tree-shaped heat exchange fin core 3 used in the invention has the average heat storage rate of 1.4 times under the same size, but the actual average heat storage rate needs to be multiplied by the working condition coefficient of 0.8-1 under different actual working conditions; the round tube heat exchange channels arranged on the tree-shaped heat exchange fin core body 3 can conduct heat to the tree-shaped heat exchange fin core body through the round tubes more uniformly, and therefore more efficient heat storage is achieved. Compared with the heat storage of a traditional water tank, the heat storage of the phase-change material used by the invention has higher energy storage density under the condition of the same volume; the integral phase change heat accumulator has a simple structure, the tree-shaped heat exchange fin core body is easy to disassemble, the subsequent maintenance, replacement, maintenance and the like are facilitated, and the reliability of the integral phase change heat accumulator in long-term operation can be ensured.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a tubular solar energy phase transition heat accumulator which characterized in that, includes the heat accumulator casing, the inside tree-shaped fin heat transfer core that is equipped with of heat accumulator casing, tree-shaped fin heat transfer core with it has phase change material to fill between the heat accumulator casing, the one end of heat accumulator casing is equipped with the water inlet, the other end of heat accumulator casing is equipped with the delivery port.
2. The tubular solar phase change heat accumulator according to claim 1, wherein the heat accumulator housing comprises a fixed housing and a detachable housing, the detachable housing being detachably connected to the fixed housing.
3. The tubular solar phase change heat accumulator according to claim 2 wherein the fixed and removable shells are cylindrical.
4. The tubular solar phase change heat accumulator according to claim 2 wherein the fixed and removable shells are flanged.
5. The tubular solar phase change heat accumulator according to claim 2, wherein a seal ring is provided between the fixed shell and the detachable shell.
6. The tubular solar phase-change heat accumulator according to claim 2, characterized in that the fixed shell and the detachable shell are internally provided with connection grooves for connection with the tree-shaped finned heat exchange core, which is connected with the connection grooves.
7. The tubular solar phase-change heat accumulator according to claim 1, wherein one end of the tree-shaped fin heat exchange core body is provided with a water inlet joint, the other end of the tree-shaped fin heat exchange core body is provided with a water outlet joint, and the middle part of the tree-shaped fin heat exchange core body is provided with a heat exchange channel.
8. The tubular solar phase change heat accumulator according to claim 7, wherein the water inlet is connected to the water inlet connection and the water outlet is connected to the water outlet connection.
9. The tubular solar phase change heat accumulator according to claim 8, wherein sealing rings are provided between the water inlet and the water inlet joint and between the water outlet and the water outlet joint.
10. The tubular solar phase-change heat accumulator according to claim 1, wherein the tree-shaped heat exchange fin core is formed by a 3D printing technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210405097.9A CN114608209A (en) | 2022-04-18 | 2022-04-18 | Tubular solar phase-change heat accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210405097.9A CN114608209A (en) | 2022-04-18 | 2022-04-18 | Tubular solar phase-change heat accumulator |
Publications (1)
| Publication Number | Publication Date |
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| CN114608209A true CN114608209A (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210405097.9A Pending CN114608209A (en) | 2022-04-18 | 2022-04-18 | Tubular solar phase-change heat accumulator |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639296A (en) * | 2009-08-24 | 2010-02-03 | 北京桑达太阳能技术有限公司 | Thermal storage type vacuum tube |
| DE102010060717A1 (en) * | 2010-11-16 | 2012-05-16 | Dieter Girlich | Heat distributor for use in underfloor heating or heat storage of solar thermal plant, comprises base body and rib, which is in thermal contact with base body |
| CN104154788A (en) * | 2014-08-14 | 2014-11-19 | 东南大学 | Heat pipe type solid-liquid phase transition heat accumulator |
| CN204854437U (en) * | 2015-08-05 | 2015-12-09 | 南京星环能源科技有限公司 | Heat -retaining formula heat exchanger |
| CN205784773U (en) * | 2016-05-30 | 2016-12-07 | 郑州轻工业学院 | A kind of phase change thermal storage heat exchanger |
| CN107631657A (en) * | 2017-09-04 | 2018-01-26 | 西安交通大学 | A kind of shell-tube type Latent Heat Storage Exchanger |
| CN111156849A (en) * | 2020-01-21 | 2020-05-15 | 大唐吉林发电有限公司热力分公司 | High-efficient heat accumulation device |
| CN113916037A (en) * | 2021-10-13 | 2022-01-11 | 江苏科技大学 | Snowflake-shaped fin phase-change heat storage device |
| CN215864102U (en) * | 2021-07-06 | 2022-02-18 | 相变储能(北京)科技有限公司 | Phase-change heat storage rod for solar heat collection pipe |
-
2022
- 2022-04-18 CN CN202210405097.9A patent/CN114608209A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639296A (en) * | 2009-08-24 | 2010-02-03 | 北京桑达太阳能技术有限公司 | Thermal storage type vacuum tube |
| DE102010060717A1 (en) * | 2010-11-16 | 2012-05-16 | Dieter Girlich | Heat distributor for use in underfloor heating or heat storage of solar thermal plant, comprises base body and rib, which is in thermal contact with base body |
| CN104154788A (en) * | 2014-08-14 | 2014-11-19 | 东南大学 | Heat pipe type solid-liquid phase transition heat accumulator |
| CN204854437U (en) * | 2015-08-05 | 2015-12-09 | 南京星环能源科技有限公司 | Heat -retaining formula heat exchanger |
| CN205784773U (en) * | 2016-05-30 | 2016-12-07 | 郑州轻工业学院 | A kind of phase change thermal storage heat exchanger |
| CN107631657A (en) * | 2017-09-04 | 2018-01-26 | 西安交通大学 | A kind of shell-tube type Latent Heat Storage Exchanger |
| CN111156849A (en) * | 2020-01-21 | 2020-05-15 | 大唐吉林发电有限公司热力分公司 | High-efficient heat accumulation device |
| CN215864102U (en) * | 2021-07-06 | 2022-02-18 | 相变储能(北京)科技有限公司 | Phase-change heat storage rod for solar heat collection pipe |
| CN113916037A (en) * | 2021-10-13 | 2022-01-11 | 江苏科技大学 | Snowflake-shaped fin phase-change heat storage device |
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