CN112629050B - Solar phase-change heat storage device supported by array type hollow lattice truss unit - Google Patents
Solar phase-change heat storage device supported by array type hollow lattice truss unit Download PDFInfo
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- CN112629050B CN112629050B CN202011515181.3A CN202011515181A CN112629050B CN 112629050 B CN112629050 B CN 112629050B CN 202011515181 A CN202011515181 A CN 202011515181A CN 112629050 B CN112629050 B CN 112629050B
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- heat storage
- truss
- box body
- phase
- change heat
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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
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
A solar phase-change heat storage device supported by an array type hollow lattice truss unit comprises a heat storage box body, wherein a truss phase-change heat storage unit array is arranged inside the heat storage box body, the top of the heat storage box body is provided with a heat storage box body inlet, and the bottom of the side surface of the heat storage box body is provided with a heat storage box body outlet; the truss phase change heat storage unit comprises a hollow sphere, a hollow truss connecting rod is connected outside the hollow sphere, and phase change materials are filled in the hollow sphere and the hollow truss connecting rod; high-temperature fluid enters through the inlet of the box body, contacts with the heat storage phase change truss unit array in the heat storage box body to exchange heat, and finally flows out of the outlet of the box body, and the convection effect under the action of gravity is obvious by adopting an up-in-down-out mode, so that the high-temperature fluid and the phase change material are ensured to exchange heat fully; the invention has high structural strength and relatively convenient preparation, and can change in equal proportion or increase and decrease the truss density according to different application equipment, thereby realizing uniform and efficient energy storage and heat exchange.
Description
Technical Field
The invention belongs to the technical field of heat storage devices, and particularly relates to a solar phase-change heat storage device supported by an array type hollow lattice truss unit.
Background
Solar energy is a leading and competitive energy source in the current energy strategy, has a very important position and great advantages in the aspects of cleanness and renewability, and is applied to many different occasions.
The hollow lattice truss unit has certain advantages in structure, high structural strength and strong combinability, and meanwhile, the size of the hollow lattice truss unit can be changed or the truss density can be increased or decreased in an equal proportion along with different application equipment, so that the hollow lattice truss unit is applied to different occasions.
At present, most common solar phase-change heat storage devices adopt plate-type supporting phase-change spheres, and with continuous improvement of equipment requirements, common heat storage structures in common energy storage devices can not meet technical requirements, so that the problems of overlarge volume, limited application range, uneven heat storage distribution, low energy storage efficiency and the like exist.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the solar phase-change heat storage device supported by the array type hollow lattice truss unit, which has high structural strength and relatively convenient preparation, and can change in equal proportion or increase and decrease the truss density according to different application equipment to realize uniform and efficient energy storage and heat exchange.
In order to achieve the purpose, the invention adopts the technical scheme that:
a solar phase-change heat storage device supported by an array type hollow lattice truss unit comprises a heat storage box body 2, a truss phase-change heat storage unit 3 array is arranged inside the heat storage box body 2, a heat storage box body inlet 1 is arranged at the top of the heat storage box body 2, and a heat storage box body outlet 5 is arranged at the bottom of the side face of the heat storage box body 2;
the truss phase change heat storage unit 3 comprises a hollow sphere 6, a hollow truss connecting rod 7 is connected outside the hollow sphere 6, and phase change materials are filled in the hollow sphere 6 and the hollow truss connecting rod 7;
high-temperature fluid 4 enters through the box inlet 1, contacts with the heat storage phase change truss unit 3 array in the heat storage box 2 to exchange heat, flows out through the box outlet 5 at last, adopts a mode of going in and going out from top to bottom, has obvious convection effect under the action of gravity, and ensures that the high-temperature fluid 4 and the phase change material exchange heat fully.
The truss phase change heat storage unit 3 array is arranged in a staggered array mode, part of high-temperature fluid 4 is retained, space complexity inside the heat storage box body 2 is improved, and convective heat transfer is enhanced.
The hollow sphere 6 and the hollow truss rod 7 of the truss phase change heat storage unit 3 are subjected to size conversion according to different application equipment.
By changing the size and density of the truss phase change heat storage unit 3, the change of the filling rate of the phase change material in the heat storage box body 2 can be realized.
The truss phase change heat storage unit 3 can be standardized and serialized, and is convenient to disassemble and replace.
The truss phase change heat storage unit 3 can be manufactured in various manners, the large-volume truss phase change heat storage unit 3 is formed by a casting method, and the micro-truss phase change heat storage unit 3 is obtained by an additive manufacturing method.
The solar phase-change heat storage device supported by the array type hollow lattice truss unit changes the size or the density of the truss phase-change heat storage unit 3 according to application equipment or occasions, so that the solar phase-change heat storage device is suitable for different equipment or occasions.
Compared with the prior art, the invention at least has the following gain effects:
compared with the traditional plate type supporting sphere scheme, the truss phase change heat storage unit 3 is applied to the phase change heat storage device, the structural rigidity is ensured, other additional auxiliary structures are not needed, and the spatial array arrangement and the support of the phase change heat storage unit can be realized by virtue of the structural characteristics of the truss phase change heat storage unit.
In the existing plate type supporting ball scheme, due to the existence of a large ball body and a supporting plate, the flow resistance of the high-temperature fluid 4 in the heat storage box body is large, and the convection effect is insufficient. When the hollow sphere 6 and the hollow truss connecting rod 7 are used as the container of the phase change material, the flow resistance is relatively small, and the relative sizes of the hollow sphere 6 and the hollow truss connecting rod 7 can be changed according to different conditions, so that different flow resistances are realized. Compared with the existing plate type supporting ball scheme, the structure has the advantages that the convection effect is obvious, and the heat storage effect is better.
The truss phase change heat storage unit 3 has a complex surface structure, can increase the heat exchange area, and improves the heat storage efficiency.
The truss phase change heat storage unit 3 can be standardized, is easy to be put into practical application, can be assembled and assembled differently according to practical application conditions, and is convenient to disassemble and replace.
The truss phase change heat storage unit 3 can be made into a micro structure, and the small size and the excellent structural strength can enable the truss phase change heat storage unit to be applied to high-precision products with small sizes.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the truss phase change heat storage unit 3 according to the present invention.
Fig. 3 is a schematic diagram of the working principle of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments and the accompanying drawings, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, the solar phase-change heat storage device supported by an array type hollow lattice truss unit comprises a heat storage box body 2, wherein a truss phase-change heat storage unit 3 array is arranged inside the heat storage box body 2, a heat storage box body inlet 1 is arranged at the top of the heat storage box body 2, and a heat storage box body outlet 5 is arranged at the bottom of the side surface of the heat storage box body 2; the heat storage box inlet 1, the heat storage box body 2, the heat storage phase change truss unit 3 and the heat storage box body outlet 5 jointly form a structural frame, so that the structural stability is ensured;
referring to fig. 2, the truss phase change heat storage unit 3 comprises a hollow sphere 6, a hollow truss connecting rod 7 is connected outside the hollow sphere 6, and phase change materials are filled in the hollow sphere 6 and the hollow truss connecting rod 7; the truss phase change heat storage unit 3 is excellent in structural strength, the structural rigidity is guaranteed, other additional auxiliary structures are not needed, and the integral bearing function can be achieved by means of the self structure; the hollow sphere 6 and the hollow truss rod 7 both greatly increase the heat exchange area, thereby improving the heat storage performance;
high-temperature fluid 4 enters through the box body inlet 1, contacts with the heat storage phase change truss unit 3 array in the heat storage box body 2 for heat exchange, and finally flows out from the box body outlet 5; in order to ensure the heat exchange quality, an upper inlet and lower outlet mode is adopted, the convection effect under the action of gravity is more obvious, and the high-temperature fluid 4 can be ensured to fully exchange heat with the phase-change material; the truss phase change heat storage unit array forms a complex space, and has small flow resistance, strong convection effect and good heat storage effect.
The truss phase change heat storage unit 3 array adopts the staggered array arrangement, detains partial high-temperature fluid 4, improves the space complexity inside the heat storage box body 2 simultaneously, strengthens the convective heat transfer, makes the change heat abundant.
The hollow sphere 6 and the hollow truss rod 7 of the truss phase change heat storage unit 3 are subjected to size conversion according to different application equipment.
By changing the size and density of the truss phase change heat storage unit 3, the filling rate of the phase change material in the heat storage box body 2 can be changed, so that the heat storage capacity is improved.
The truss phase change heat storage unit 3 is made in various ways and is relatively convenient and fast; the truss phase change heat storage unit 3 with a large volume can be formed by adopting a casting method, and the preparation process is convenient and fast; the micro truss phase change heat storage unit 3 can be obtained by adopting an additive manufacturing method; the truss phase change heat storage unit 3 is easy to be standardized and serialized, and is convenient to flexibly assemble and replace.
Referring to fig. 3, the working principle of the present invention is: the solar phase-change heat storage device supported by the array type hollow lattice truss unit is connected into a solar energy supply system, when the solar radiation amount is large, only valves 11, 12, 13, 16 and 18 are opened, and a solar heat collector supplies heat to the tail end of the heat supply and simultaneously stores redundant heat energy in the solar phase-change heat storage device; when the solar radiation quantity does not meet the heating requirement, the valves 12, 13, 16 and 17 are opened, and the solar phase-change heat storage device releases heat energy to supply heat to the heating tail end; when the heat energy is insufficient, the valves 14 and 15 are opened to heat the heating end by the auxiliary heating.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a solar energy phase transition heat-retaining device that array type cavity lattice truss unit supported, includes heat-retaining box (2), its characterized in that: a truss phase change heat storage unit (3) array is arranged inside the heat storage box body (2), a heat storage box body inlet (1) is formed in the top of the heat storage box body (2), and a heat storage box body outlet (5) is formed in the bottom of the side face of the heat storage box body (2);
the truss phase change heat storage unit (3) comprises a hollow sphere (6), a hollow truss connecting rod (7) is connected to the outside of the hollow sphere (6), and phase change materials are filled in the hollow sphere (6) and the hollow truss connecting rod (7);
high-temperature fluid (4) enters through the box body inlet (1), contacts with the heat storage phase change truss unit (3) in the heat storage box body (2) for heat exchange, finally flows out from the box body outlet (5), adopts an up-in-down-out mode, has obvious convection effect under the action of gravity, and ensures that the high-temperature fluid (4) and the phase change material perform sufficient heat exchange;
the truss phase change heat storage unit (3) array is arranged in a staggered array mode, part of high-temperature fluid (4) is retained, space complexity inside the heat storage box body (2) is improved, and convective heat transfer is enhanced.
2. The solar phase-change heat storage device supported by the array type hollow lattice truss unit as claimed in claim 1, wherein: the hollow sphere (6) and the hollow truss rod (7) of the truss phase change heat storage unit (3) are subjected to size conversion according to different application equipment.
3. The solar phase-change heat storage device supported by the array type hollow lattice truss unit as claimed in claim 1, wherein: the filling rate of the phase-change material in the heat storage box body (2) can be changed by changing the size and the density of the truss phase-change heat storage unit (3).
4. The solar phase-change heat storage device supported by the array type hollow lattice truss unit as claimed in claim 1, wherein: the truss phase change heat storage unit (3) can be standardized and serialized and is convenient to disassemble and replace.
5. The solar phase-change heat storage device supported by the array type hollow lattice truss unit as claimed in claim 1, wherein: the truss phase change heat storage unit (3) is manufactured in various modes, the large-volume truss phase change heat storage unit (3) is formed by a casting method, and the micro truss phase change heat storage unit (3) is obtained by an additive manufacturing method.
6. The solar phase-change heat storage device supported by the array type hollow lattice truss unit as claimed in claim 1, wherein: the solar phase-change heat storage device supported by the array type hollow lattice truss unit changes the size or the density of the truss phase-change heat storage unit (3) according to application equipment or occasions, so that the solar phase-change heat storage device is suitable for different equipment or occasions.
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| CN112629050B true CN112629050B (en) | 2022-03-22 |
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| CN114423236B (en) * | 2022-01-19 | 2023-08-18 | 中国电子科技集团公司第十研究所 | Preparation method of phase change heat reservoir of electronic equipment |
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| FR3024534B1 (en) * | 2014-07-31 | 2019-03-22 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | ENERGY STORAGE DEVICE BY PHASE CHANGE MATERIAL AND STORAGE METHOD THEREOF |
| CN206944789U (en) * | 2017-02-23 | 2018-01-30 | 宁波瑞信能源科技有限公司 | A kind of mobile heat-storing device using microchannel enhanced direct contact heat transfer |
| CN108534578B (en) * | 2018-03-07 | 2019-11-26 | 西安交通大学 | A kind of preparation method of packed bed heat-storing device and heat accumulation ball |
| CN209763832U (en) * | 2019-01-09 | 2019-12-10 | 河北科技大学 | Novel phase change heat storage heat exchanger |
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