CN110763065B - Hybrid heat storage and release integrated tank - Google Patents
Hybrid heat storage and release integrated tank Download PDFInfo
- Publication number
- CN110763065B CN110763065B CN201911200484.3A CN201911200484A CN110763065B CN 110763065 B CN110763065 B CN 110763065B CN 201911200484 A CN201911200484 A CN 201911200484A CN 110763065 B CN110763065 B CN 110763065B
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- heat storage
- heat exchanger
- heat
- storage tank
- tank body
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- 238000005338 heat storage Methods 0.000 title claims abstract description 128
- 150000003839 salts Chemical class 0.000 claims abstract description 54
- 238000012546 transfer Methods 0.000 claims abstract description 34
- 238000005192 partition Methods 0.000 claims abstract description 24
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 238000009825 accumulation Methods 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims description 19
- 239000011232 storage material Substances 0.000 claims description 15
- 238000004321 preservation Methods 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 239000012782 phase change material Substances 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 16
- 230000005611 electricity Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/021—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
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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 invention discloses a hybrid heat storage and release integrated tank. Comprises a heat storage tank component, an immersed coil heat exchanger and a phase change heat exchanger component. The inner wall of the heat storage tank body is provided with an upper annular boss and a lower annular boss, and the circular partition plates can slide between the upper annular boss and the lower annular boss along the respective guide rails; the suction type electric heaters are symmetrically arranged and connected into the tank from the lower side surface of the tank body, the suction type electric heaters are respectively connected into the tank from the upper side surface of the tank body through respective suction pumps, the coil pipe heat exchanger is arranged in the center of the heat storage tank body after penetrating through the round baffle holes, the stirrer and the phase change heat exchanger component are coaxially arranged below the heat storage tank body in sequence, the upper end surface and the lower end surface of the heat storage tank body are respectively provided with a heat transfer medium injection port and a heat transfer medium discharge port, and the tank body is filled with molten salt. The invention has the advantages of large heat accumulation and heat release in unit volume; the double spiral fin pipeline is adopted in the phase change heat exchanger, so that the melting and solidifying time of the phase change material is obviously shortened, and the heat storage and release time is reduced; the structure is compact, and the manufacturing cost is low; the working temperature range is wide.
Description
Technical Field
The invention relates to a molten salt heat storage technology, in particular to a mixed heat storage and release integrated tank.
Background
With the acceleration of the modern progress of society, the peak-valley difference of domestic power supply is gradually increased, and the development of the power industry and the problems of power supply and demand are increasingly outstanding. The power grid company pushes the peak valley time-of-use electricity price policy, guides the user to use valley electricity in multiple purposes, and reduces the power supply pressure of the power grid. The user side must rely on the corresponding technology and equipment to fully use the low-peak electricity.
The molten salt energy storage technology is an effective technical means of electric peak clipping and valley filling, and has the characteristics of low cost, high heat capacity, good safety and the like. The common heat storage modes include sensible heat storage, phase change heat storage and chemical heat storage. At present, a double-tank heat storage system adopting a sensible heat storage technology is the most mature, and the system is characterized in that a cold tank and a hot tank are respectively placed, so that the technical risk is low. However, the two-tank heat storage device needs to manufacture two storage tanks, and the connecting pipeline between the cold tank body and the hot tank body is redundant, and the pump needs to be driven to convey molten salt, so that the manufacturing cost and the operation and maintenance cost of the device are high. In order to solve the above problems, a single-tank heat storage system is provided, in which hot fluid is at the top of the tank, cold fluid is at the bottom of the tank, and in the heat storage and release processes, the cold fluid and the hot fluid are in contact, an oblique temperature layer is formed in the contact area, so as to play a role in thermal resistance, and heat is stored and released through movement of the oblique temperature layer. Compared with a double-tank heat storage system, the single-tank heat storage system simplifies the device and reduces the manufacturing and operating cost. However, the traditional single-tank system only utilizes a sensible heat storage mode, and heat is stored by means of temperature change of a heat storage material, so that the heat storage density is low, and the heat cannot be stored for a long time, so that the heat storage capacity and the heat release capacity of a unit area of the single-tank system are low; the traditional single-tank system separates cold and hot molten salt by using an inclined temperature layer in the heat storage process, and the problems that the heat storage capacity is reduced and the thickness of the inclined temperature layer is difficult to maintain due to direct contact of the cold and hot molten salt in actual operation exist; in addition, the heat storage tank in the traditional single-tank system only has a heat storage function, a heat exchange device is required to be arranged outside, molten salt is conveyed into the heat exchange device through a pipeline, a driving pump and a valve, and the manufacturing cost of accessories is high.
Disclosure of Invention
The invention aims to provide a mixed heat storage and heat release integrated tank, which combines a sensible heat storage mode and a phase change heat storage mode to improve the heat storage capacity of an integral device; meanwhile, the original complex heat storage system is simplified into an integrated device for heat release and heat storage.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
The invention comprises a heat storage tank component, an immersed coil heat exchanger and a phase change heat exchanger component; a heat storage tank member: the heat storage tank mainly comprises a heat storage tank body with a heat preservation layer, a circular partition plate, a plurality of guide rails, linear bearings with the same number as the guide rails, a stirrer, two suction pumps, two connecting pipes, two suction electric heaters, two external pipelines and an upper annular boss and a lower annular boss; a plurality of guide rails are uniformly distributed on the same circumference and fixed between the upper side surface and the lower side surface of the heat storage tank body, an upper annular boss and a lower annular boss are arranged on the inner wall of the heat storage tank body, and the circular partition plates can slide along the respective guide rails between the upper annular boss and the lower annular boss through linear bearings respectively; the two suction type electric heaters are connected into the tank from the lower side of the heat storage tank body through respective connecting pipes, the two suction type electric heaters are connected into the tank from the upper side of the heat storage tank body through respective suction pumps and respective external pipelines respectively, the immersed coil heat exchanger penetrates through a round baffle hole and is arranged in the center of the heat storage tank body, a stirrer and a phase change heat exchanger component are coaxially arranged below the immersed coil heat exchanger in sequence, a heat transfer medium injection port and a heat transfer medium discharge port are respectively arranged on the upper end face and the lower end face of the heat storage tank body, the heat storage tank body is filled with molten salt, the molten salt enters the respective suction type electric heaters for heating under the action of the respective suction pumps and is conveyed to the upper side of the heat storage tank body through respective pump bodies to form a high-temperature molten salt region, the unheated part at the bottom is a low-temperature molten salt region, and the high-temperature molten salt region and the low-temperature molten salt region are separated by a baffle; the heat transfer medium injection port is connected with an inlet pipeline of the immersed coil heat exchanger, and an outlet of the immersed coil heat exchanger is connected with an inlet of the phase change heat exchanger.
The phase change heat exchanger component mainly comprises a heat transfer layer, a phase change heat storage material, a phase change heat exchanger pipeline, an upper side flow equalizing plate, a lower side flow equalizing plate and a heating rod; the phase change heat exchanger pipeline and the heating rods form a cylinder body of the phase change heat exchanger component, the phase change heat exchanger pipeline is distributed in a manner of uniformly distributing a plurality of center circles, four heating rods are vertically and symmetrically distributed along the axis of the cylinder body, the lower ends of the four heating rods are respectively fixed at the lower side of the heat storage tank body, the phase change heat storage material is filled outside the phase change heat exchanger pipeline, a heat transfer layer is welded outside the cylinder body, an upper flow equalizing plate and a lower flow equalizing plate are respectively arranged at the upper end and the lower end of the phase change heat exchanger pipeline, the upper flow equalizing plate is communicated with an inlet of the phase change heat exchanger, and the lower flow equalizing plate is communicated with a heat transfer medium outlet.
The heat exchanger pipeline in the phase change heat exchanger component is of an inner and outer double-spiral fin tube structure, and aluminum tubes are used as the phase change heat exchanger pipeline.
The gap between the circular partition plate and the inner wall surface of the heat storage tank body is 3-5 mm.
The suction type electric heater is in flange connection with the connecting pipe.
The invention has the beneficial effects that:
1) The heat storage amount and the heat release amount per unit volume are large. In the heat storage process, the electric heating rod of the whole device is started by utilizing the electric quantity of valley electricity, and part of heat of the electric heating rod sucked in the single-tank heat accumulator is used for heating molten salt in the heat storage tank to perform sensible heat storage; and the other part of the phase change heat storage material is contacted with a heat transfer layer outside the phase change heat exchanger by high-temperature molten salt to transfer heat to the phase change heat storage material inside the phase change heat exchanger, and meanwhile, a heating rod inside the phase change heat exchanger works, so that the phase change heat storage material is converted from solid state to liquid state to store heat, namely, phase change heat storage is performed. The hybrid heat storage mode is adopted, and phase change heat storage and sensible heat storage are effectively combined. Compared with the traditional single-tank heat accumulator, the heat utilization rate and the heat release amount of the invention are obviously improved. Besides, the movable partition plate device is additionally arranged in the heat storage tank body, so that heat loss caused by large-area contact of cold and hot fluid is avoided, and the heat storage capacity of molten salt in unit volume is improved.
2) The flow effect and the heat transfer performance of the phase change heat exchanger are optimized. The pipeline in the phase-change heat exchanger adopts a double-spiral fin pipeline, and compared with a light pipe under the same condition, the melting and solidifying time of the phase-change material is obviously shortened, so that the heat storage and heat release time is shortened. Meanwhile, for the inner annular rib pipe, the ratio of the space between the inner ribs to the height of the inner ribs is equal to 8, and the flow condition and the heat transfer effect in the pipe are optimal.
3) Compact structure and low manufacturing cost. The invention compares the double-tank fused salt heat storage system with the traditional single-tank system, reduces the usage amount of the heat storage tank material, simplifies the complexity of the pipeline and reduces the manufacturing cost.
4) The working temperature range is wide. The high-low temperature melting point of the molten salt in the single-tank heat accumulator can be selected according to actual requirements, and meanwhile, the phase change heat accumulator is introduced, so that the service temperature of the heat accumulator tank is more uniform, and the inlet and outlet temperatures can keep stable temperature difference.
Drawings
Fig. 1 is a structural sectional view of a hybrid heat storage and release integrated tank of the present invention.
FIG. 2 is a view A-A of FIG. 1;
Fig. 3 is a structural plan view of the phase change heat accumulator of the present invention.
Fig. 4 is a schematic structural view of the phase change heat accumulator tube of the present invention.
In the figure: 1. the heat-transfer medium heat-storage tank comprises a heat-transfer medium injection opening, 2, a heat-storage tank body with a heat-preservation layer, 3, molten salt, 4, a round partition plate, 5, a guide rail, 6, a linear bearing, 7, a stirrer, 8, a suction pump, 9, a connecting pipe, 10, a suction type electric heater, 11, an external pipeline, 12, an annular boss, 13, an immersed coil heat exchanger, 14, a phase-change heat exchanger inlet, 15, a heat-transfer layer, 16, an upper flow equalizing plate, 17, a phase-change heat-storage material, 18, a phase-change heat exchanger pipeline, 19, a heating rod, 20, a lower flow equalizing plate, 21 and a heat-transfer medium discharge outlet.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1 and 2, the invention comprises a heat storage tank component, an immersed coil heat exchanger 13 and a phase change heat exchanger component; a heat storage tank member: the heat storage tank mainly comprises a heat storage tank body 2 with a heat preservation layer, a circular partition plate 4, a plurality of guide rails 5, linear bearings 6 with the same number as the guide rails, a stirrer 7, two suction pumps 8, two connecting pipes 9, two suction type electric heaters 10, two external pipelines 11 and an upper annular boss 12; a plurality of guide rails 5 are uniformly distributed on the same circumference and fixed between the upper side surface and the lower side surface of the heat storage tank body 2, an upper annular boss 12 and a lower annular boss 12 are arranged on the inner wall of the heat storage tank body 2, and the circular partition plates 4 can slide along the respective guide rails between the upper annular boss 12 and the lower annular boss 12 through linear bearings 6; the two symmetrically arranged suction type electric heaters 10 are connected into the tank from the lower side surface of the heat storage tank body 2 through respective connecting pipes 9, the two suction type electric heaters 10 are connected into the tank from the upper side surface of the heat storage tank body 2 through respective suction pumps 8 and respective external pipelines 11, the immersed coil heat exchanger 13 penetrates through the holes of the round partition plate 4 and is arranged in the center of the heat storage tank body 2, the stirrer 7 and the phase-change heat exchanger part are coaxially arranged below the immersed coil heat exchanger 13 in sequence, the upper end surface and the lower end surface of the heat storage tank body 2 are respectively provided with a heat transfer medium injection port 1 and a heat transfer medium discharge port 21, the heat storage tank body 2 is filled with molten salt 3, the molten salt 3 enters the respective suction type heater 10 for heating under the action of the respective suction pumps 8 and is then conveyed to the upper part of the heat storage tank by the respective pump body to form a high-temperature molten salt region, the unheated part at the bottom is a low-temperature molten salt region, and the high-temperature molten salt region and the low-temperature molten salt region are separated by the partition plate 4; the heat transfer medium injection port 1 is connected with an inlet pipeline of the immersed type coil heat exchanger 13, and an outlet of the immersed type coil heat exchanger 13 is connected with an inlet 14 of the phase change heat exchanger.
As shown in fig. 2, 3 and 4, the phase-change heat exchanger component mainly comprises a heat transfer layer 15, a phase-change heat storage material 17, a phase-change heat exchanger pipeline 18, an upper flow equalizing plate 16, a lower flow equalizing plate 20 and a heating rod 19; the phase-change heat exchanger pipeline 18 and the heating rods 19 form a cylinder body of the phase-change heat exchanger component, the phase-change heat exchanger pipeline 18 is distributed in a manner of uniformly distributing a plurality of center circles, four heating rods 19 are vertically and symmetrically distributed along the axis of the cylinder body, the lower ends of the four heating rods 19 are respectively fixed on the lower side of the heat storage tank body 2, the phase-change heat storage material 17 is filled outside the phase-change heat exchanger pipeline 18, a heat transfer layer 15 is welded outside the cylinder body, an upper flow equalizing plate 16 and a lower flow equalizing plate 20 are respectively arranged at the upper end and the lower end of the phase-change heat exchanger pipeline, the upper flow equalizing plate 16 is communicated with the phase-change heat exchanger inlet 14, and the lower flow equalizing plate 20 is communicated with a heat transfer medium outlet 21.
As shown in fig. 4, the heat exchanger tube 18 in the phase-change heat exchanger component is of an inner-outer double-spiral fin tube structure, the phase-change heat exchanger tube is aluminum tube, and the ratio of the inner rib spacing to the inner rib height is equal to 8.
As shown in fig. 1, the clearance between the circular partition plate 4 and the inner wall surface of the heat storage tank 2 is 3 to 5mm.
As shown in fig. 1, the suction electric heater 10 and the adapter tube 9 are in flange connection.
The working principle of the invention is as follows:
The invention has two working conditions of heat accumulation process and heat release process:
And (3) heat storage process: including sensible heat storage process and phase change heat storage process. During sensible heat storage, the power control assembly activates the two suction electric heaters 10 and the stirrer 7. The two suction type electric heaters 10 heat the molten salt 3 at the bottom of the heat storage tank body 2 to form high-temperature molten salt, the high-temperature molten salt is conveyed to the top of the heat storage tank body 2 along the respective external pipelines 11 under the action of the two suction pumps 8, and the high-temperature molten salt is small in density, so that the high-temperature molten salt can be continuously accumulated at the upper side of the tank body along with the heat storage reaction. The linear bearing 6 is welded on the partition plate 4, the partition plate 4 can slide along the six guide rails 5, the partition plate 4 can be pushed to move downwards after high-temperature molten salt is accumulated to a certain amount, meanwhile, the low-temperature molten salt at the lower side of the heat storage tank body 2 is continuously heated by the two suction heaters 10 to be changed into high-temperature molten salt to be conveyed to the upper side of the heat storage tank body 2, and the direct contact area of the cold and hot molten salt is greatly reduced due to the arrangement of the partition plate 4. When the partition plate 4 is moved to the lower annular boss 12, the heater stops operating, completing the sensible heat storage process. In the phase-change heat storage process, the two suction heaters 10 heat the bottom molten salt, a part of heat is transferred to the phase-change heat storage material 17 in the phase-change heat exchanger by the heated molten salt contacting the heat transfer layer 15, and the phase-change heat storage material 17 is converted from solid state to liquid state through the heat carried by the heating rod 19 and the heat transfer layer 15 of the phase-change heat storage device, so that the phase-change heat storage process is completed.
Exothermic process: the heat exchange medium enters the immersed coil heat exchanger 13 through the heat transfer medium injection port 1, contacts and exchanges heat with high-temperature molten salt on the upper side of the partition plate 4, the temperature of the molten salt is reduced after the molten salt passes through the heat exchanger, the density of the molten salt with low temperature is high, the molten salt flows to the lower side of the heat storage tank body through the middle annular channel of the immersed heat exchanger, the lower side molten salt is accumulated to push the partition plate 4 to move upwards, the high-temperature molten salt on the upper side of the tank body is extruded by the partition plate 4, and the molten salt continuously enters the middle annular region of the immersed coil heat exchanger 13 to exchange heat. The heat exchange medium flowing out from the outlet of the immersed coil heat exchanger 13 enters the upper flow equalizing plate 16 through the top inlet 14 of the heat transfer layer, uniformly flows into the shell-and-tube phase change heat exchanger pipeline 18 for heat exchange, the phase change heat storage material 17 outside the phase change heat exchanger pipeline 18 is changed from liquid state to solid state to release heat, and the heat transfer medium absorbs the heat and then flows out from the bottom heat transfer medium outlet 21 to complete the heat release process.
In the actual use process, the heating rod 19 can be heated by utilizing the electric quantity during the valley electricity, the heat is stored in the molten salt of the heat storage single tank and the phase-change heat storage material of the phase-change heat exchanger, and then the heat release process is carried out in daytime, so that the peak clipping and valley filling effects are achieved, and the stability of the power grid is improved. Compared with a double-tank heat storage system and a traditional single-tank heat storage system, the invention adopts a mixed heat storage method, thereby greatly improving the heat storage capacity of the device and the utilization rate of the heat in the heat storage process, simplifying the device and reducing the manufacturing and operation cost of the whole device.
The foregoing detailed description is provided to illustrate the present invention and not to limit the invention, and any modifications and changes made to the present invention within the spirit of the present invention and the scope of the appended claims fall within the scope of the present invention.
Claims (5)
1. Hybrid heat accumulation and exothermic integrative jar, its characterized in that: comprises a heat storage tank component, an immersed coil heat exchanger (13) and a phase change heat exchanger component; a heat storage tank member: the heat storage tank mainly comprises a heat storage tank body (2) with a heat preservation layer, a circular partition plate (4), a plurality of guide rails (5), linear bearings (6) with the same number as the guide rails, a stirrer (7), two suction pumps (8), two connecting pipes (9), two suction type electric heaters (10), two external pipelines (11) and upper and lower annular bosses (12); a plurality of guide rails (5) are uniformly distributed on the same circumference and fixed between the upper side surface and the lower side surface of the heat storage tank body (2), an upper annular boss (12) and a lower annular boss (12) are arranged on the inner wall of the heat storage tank body (2), and the circular partition plates (4) can slide between the upper annular boss (12) and the lower annular boss along the respective guide rails through linear bearings (6); two symmetrical suction type electric heaters (10) are connected into the tank from the lower side surface of the heat storage tank body (2) through respective connecting pipes (9), the two suction type electric heaters (10) are connected into the tank from the upper side surface of the heat storage tank body (2) through respective suction pumps (8) and respective external pipelines (11), the immersed type coil heat exchanger (13) penetrates through a round partition plate (4) hole and then is arranged in the center of the heat storage tank body (2), a stirrer (7) and a phase change heat exchanger component are coaxially arranged below the immersed type coil heat exchanger (13) in sequence, a heat transfer medium injection port (1) and a heat transfer medium discharge port (21) are respectively arranged on the upper end surface and the lower end surface of the heat storage tank body (2), molten salt (3) is filled in the heat storage tank body (2), the molten salt (3) enters the respective suction type electric heaters (10) under the action of the respective suction pumps, the molten salt is conveyed to the upper side of the respective pump body to the heat storage tank to form a high-temperature molten salt zone, the unheated part is a low-temperature molten salt zone, and the high-temperature molten salt zone and the low-temperature molten salt zone is separated by the partition plate (4); the heat transfer medium injection port (1) is connected with an inlet pipeline of the immersed coil heat exchanger (13), and an outlet of the immersed coil heat exchanger (13) is connected with an inlet (14) of the phase change heat exchanger.
2. The hybrid thermal storage and heat release integrated canister of claim 1, wherein: the phase change heat exchanger component mainly comprises a heat transfer layer (15), a phase change heat storage material (17), a phase change heat exchanger pipeline (18), an upper flow equalizing plate (16), a lower flow equalizing plate (20) and a heating rod (19); the phase-change heat exchanger tube (18) and the heating rods (19) form a tube body of the phase-change heat exchanger component, the arrangement mode of the phase-change heat exchanger tube (18) is that a plurality of center circles are uniformly distributed, four heating rods (19) are vertically and symmetrically distributed along the axis of the tube body, the lower ends of the four heating rods (19) are respectively fixed at the lower side of the heat storage tank body (2), the phase-change heat storage material (17) is filled outside the phase-change heat exchanger tube (18), a heat transfer layer (15) is welded outside the tube body, an upper-side flow equalizing plate (16) and a lower-side flow equalizing plate (20) are respectively arranged at the upper end and the lower end of the phase-change heat exchanger tube, the upper-side flow equalizing plate (16) is communicated with the phase-change heat exchanger inlet (14), and the lower-side flow equalizing plate (20) is communicated with the heat transfer medium outlet (21).
3. The hybrid thermal storage and heat release integrated canister of claim 1, wherein: the heat exchanger pipeline (18) in the phase change heat exchanger component is of an inner and outer double-spiral fin tube structure, and aluminum tubes are selected as the phase change heat exchanger pipeline.
4. The hybrid thermal storage and heat release integrated canister of claim 1, wherein: the clearance between the circular partition plate (4) and the inner wall surface of the heat storage tank body (2) is 3-5 mm.
5. The hybrid thermal storage and heat release integrated canister of claim 1, wherein: the suction type electric heater (10) is in flange connection with the connecting pipe (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911200484.3A CN110763065B (en) | 2019-11-29 | 2019-11-29 | Hybrid heat storage and release integrated tank |
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| CN201911200484.3A CN110763065B (en) | 2019-11-29 | 2019-11-29 | Hybrid heat storage and release integrated tank |
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| CN110763065B true CN110763065B (en) | 2024-04-19 |
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| CN112129152A (en) * | 2020-09-17 | 2020-12-25 | 南京航空航天大学 | Forced convection solid-liquid phase change heat storage device based on alternating magnetic field and operation method |
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