CN112985140A - Heat storage device - Google Patents
Heat storage device Download PDFInfo
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- CN112985140A CN112985140A CN202011446736.3A CN202011446736A CN112985140A CN 112985140 A CN112985140 A CN 112985140A CN 202011446736 A CN202011446736 A CN 202011446736A CN 112985140 A CN112985140 A CN 112985140A
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- heat storage
- heat
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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
- F28D20/023—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 being enclosed in granular particles or dispersed in a porous, fibrous or cellular structure
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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 heat storage device, which comprises: the heat storage body defines a heat exchange space; the inlet channel and the outlet channel are both communicated with the heat exchange space; the heat storage structure with the functions of storing and releasing heat is arranged in the heat exchange space. From this, through setting up the heat-retaining structure, set up like this and can realize dashing the thermal quick storage of cinder water and release, can avoid organic working medium rankine cycle power generation system's power generation facility to frequently open and stop to make organic working medium rankine cycle power generation system can the continuous operation work, and then can promote organic working medium rankine cycle power generation system's job stabilization nature and security, and, can avoid the waste of waste heat resource, can realize the high-efficient utilization of waste heat resource, simultaneously, also can prevent the polluted environment.
Description
Technical Field
The invention relates to the field of heat storage, in particular to a heat storage device.
Background
The 1450-1550 ℃ high-temperature slag can be generated in the iron-making process of the steel industry, and water can be selected to cool the high-temperature slag, so that a large amount of hot blast furnace slag water is generated, and the temperature of the hot blast furnace slag water is 86-90 ℃.
In the related art, due to the limitations of the process and equipment level, a part of heat is used for heating in winter, and most of heat is released to the atmosphere through a cooling tower, so that a large amount of waste heat resources are wasted, and environmental pollution is caused.
In addition, in order to reduce energy consumption, the heat of the slag flushing water can be recycled, and the heat of the blast furnace slag flushing hot water is used for power generation, such as: the organic working medium Rankine cycle power generation system utilizes the heat of the slag flushing water to generate power, and the organic working medium Rankine cycle power generation system and the like can continuously generate electric energy only by needing a stable heat source. In the intermittent stage of blast furnace slag flushing (i.e. the stage without slag discharge), no hot water of blast furnace slag flushing is generated, so that the power generation device of the organic working medium Rankine cycle power generation system is frequently started and stopped, the organic working medium Rankine cycle power generation system cannot continuously operate, and the working stability and safety of the organic working medium Rankine cycle power generation system are influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a heat storage device, which can realize rapid storage and release of slag flushing water heat, can avoid frequent start and stop of a power generation device of an organic working medium rankine cycle power generation system, can improve the working stability and safety of the organic working medium rankine cycle power generation system, can avoid waste heat resource waste, and can also prevent environmental pollution.
The heat storage device according to the present invention includes: the heat storage body defines a heat exchange space; the inlet channel and the outlet channel are both communicated with the heat exchange space; the heat storage structure with the heat storage and release functions is arranged in the heat exchange space.
According to the heat storage device provided by the invention, through the arrangement of the heat storage structure, the heat of the slag flushing water can be rapidly stored and released, and the frequent start and stop of the power generation device of the organic working medium Rankine cycle power generation system can be avoided, so that the organic working medium Rankine cycle power generation system can continuously operate, the working stability and safety of the organic working medium Rankine cycle power generation system can be further improved, the waste of waste heat resources can be avoided, the efficient utilization of the waste heat resources can be realized, and meanwhile, the environmental pollution can be prevented.
In some examples of the invention, the heat storage device further comprises: the heat exchange space comprises a first partition plate and a second partition plate, wherein the heat exchange space is provided with a first open end and a second open end which are opposite to each other, the first partition plate is arranged at the first open end, and the second partition plate is arranged at the second open end.
In some examples of the invention, the inlet flow passage communicates with the first open end and the outlet flow passage communicates with the second open end.
In some examples of the invention, the first partition plate and the second partition plate are each provided with a through hole.
In some examples of the present invention, the first separator and the second separator are each configured as a mesh structure.
In some examples of the invention, at least one of the outer surface of the heat storage body, the outer surface of the inlet channel, and the outer surface of the outlet channel is provided with an insulating layer.
In some examples of the invention, the heat storage structure comprises: the shell defines a sealed storage space, and the phase-change heat storage base body is arranged in the storage space.
In some examples of the invention, the external profile of the heat storage structure is configured as a ball.
In some examples of the invention, the diameter of the heat storage structure is configured to be 3-7 mm.
In some examples of the present invention, the phase-change temperature of the phase-change heat storage matrix is T, and satisfies the relation: t is more than or equal to 75 ℃ and less than or equal to 85 ℃.
In some examples of the present invention, in a height direction of the heat exchanging space, a distance between the first partition plate and the second partition plate is D, a setting height of the heat storage structure is H, and a relation is satisfied: 1/3D is less than or equal to H is less than or equal to 2/3D.
In some examples of the invention, the free end of the inlet channel is provided with an inlet and the free end of the outlet channel is provided with an outlet.
In some examples of the invention, the cross-sectional area of the inlet channel increases progressively in a direction from the free end of the inlet channel to the first open end; the cross-sectional area of the outlet flow passage increases in a direction from the free end of the outlet flow passage to the second open end.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of a heat storage device according to an embodiment of the invention;
fig. 2 is a schematic view of a heat storage structure of a heat storage device according to an embodiment of the invention.
Reference numerals:
a heat storage device 1;
a heat storage body 2; a heat exchange space 21; a first open end 22; a second open end 23;
an inlet channel 3; an inlet 31;
an outlet flow channel 4; an outlet 41;
a heat storage structure 5; a housing 51; a phase change heat storage matrix 52; storage space 53
A first separator 61; and a second partition 62.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.
A heat storage device 1 according to an embodiment of the present invention is described below with reference to fig. 1 and 2.
As shown in fig. 1 and 2, a heat storage device 1 according to an embodiment of the present invention includes: heat-retaining body 2, inlet flow channel 3, outlet flow channel 4 and have the heat-retaining structure 5 of storing with the release heat function, heat-retaining body 2 inject heat transfer space 21, and inlet flow channel 3 and outlet flow channel 4 all communicate with heat transfer space 21, and heat-retaining structure 5 sets up in heat transfer space 21.
In the prior art, a blast furnace is core equipment for iron making in a steel plant, and the principle of blast furnace iron making is that iron ore obtains reduced pig iron through physicochemical reaction in a specific atmosphere. In the blast furnace ironmaking process, carbon in materials generates a combustion reaction in hot air to generate high-temperature reducing gas, the red-hot airflow heats descending furnace burden in the ascending process and generates a reduction reaction with ores, and carbon monoxide, hydrogen and part of red-hot fixed carbon in the high-temperature airflow deprive oxygen in the ores to reduce iron. The reduced iron is further melted and carburized to finally form molten iron. Molten iron is discharged from the taphole periodically, gangue in the ore becomes slag floating on the liquid iron surface, and the slag is discharged from the taphole periodically. Taking 5800 blast furnaces of a certain steel plant as an example, 13000 tons/day of tapping iron every day, 4300 tons/day of slag discharge, 1550 ℃ of slag discharge temperature, 4650 tons/hour of circulating flow of slag flushing water, 90 ℃ of slag flushing hot water, slag waste heat in the current slag discharge process is released to the environment in the forms of flash evaporation of slag flushing water and cooling of a cooling tower, each tapping period is 120 minutes, wherein the slag discharge period of the blast furnace is 80 minutes, and the slag discharge intermittent period (i.e. the period without slag discharge) is 40 minutes, so that the slag discharge process of the blast furnace is a typical intermittent process, and further the generation of slag flushing hot water is intermittent. If the slag flushing hot water is directly used as a heat source of the organic working medium Rankine cycle power generation system, the organic working medium Rankine cycle power generation system is started in the blast furnace slag flushing, and the organic working medium Rankine cycle power generation system stops working in the slag flushing intermittent stage, so that the organic working medium Rankine cycle power generation system is started and stopped frequently, and the stable and safe operation of the organic working medium Rankine cycle power generation system is very unfavorable.
In the application, by arranging the heat storage device 1, blast furnace slag flushing hot water can flow into the heat exchange space 21 through the inlet runner 3, when the blast furnace slag flushing hot water flows through the heat exchange space 21, the heat storage structure 5 and the blast furnace slag flushing hot water are disturbed mutually, the blast furnace slag flushing hot water exchanges heat with the heat storage structure 5 to store a part of heat in the heat storage structure 5, the blast furnace slag flushing hot water after heat exchange flows out of the heat storage device 1 through the outlet runner 4 and then flows into the organic working medium Rankine cycle power generation system to heat the organic working medium, so as to realize the power generation of the organic working medium Rankine cycle power generation system, and in the blast furnace slag flushing intermittent stage, when the low-temperature water flows through the heat exchange space 21, the heat storage structure 5 transfers the heat to the low-temperature water, so that the temperature of the low-temperature water is increased to high-temperature water, then the high-temperature water flows out, and the power generation of the organic working medium Rankine cycle power generation system is realized. Therefore, the heat storage device 1 can effectively store the heat of the hot water of the blast furnace slag flushing in the blast furnace slag flushing stage, the heat storage device 1 can release the stored heat in the intermittent stage of the blast furnace slag flushing, a stable heat source is provided for a waste heat utilization system (an organic working medium Rankine cycle power generation system), the continuous operation of the organic working medium Rankine cycle power generation system can be ensured, the working stability and the safety of the organic working medium Rankine cycle power generation system can be further improved, the waste of waste heat resources can be avoided, the efficient utilization of the waste heat resources can be realized, and meanwhile, the environment pollution can be prevented.
From this, through setting up heat-retaining structure 5, can realize dashing the thermal quick storage of cinder water and release, can avoid the power generation facility of organic working medium rankine cycle power generation system to frequently open and stop to make organic working medium rankine cycle power generation system can continue the operation work, and then can promote organic working medium rankine cycle power generation system's job stabilization nature and security, and, can avoid waste heat resource's waste, can realize waste heat resource's high-efficient utilization, simultaneously, also can prevent the polluted environment.
In some embodiments of the present invention, as shown in fig. 1, the heat storage device 1 further includes: the heat exchanging space 21 may have opposite first and second open ends 22 and 23 by first and second partitions 61 and 62, the first partition 61 may be disposed at the first open end 22, and the second partition 62 may be disposed at the second open end 23. Wherein, first open end 22 is the lower extreme of heat transfer space 21 in fig. 1, and second open end 23 is the upper end of heat transfer space 21 in fig. 1, and first baffle 61 and second baffle 62 can be spacing heat-retaining structure 5 in heat transfer space 21, can prevent that heat-retaining structure 5 from moving out from heat transfer space 21 to can guarantee heat-retaining device 1's working property.
In some embodiments of the invention, as shown in fig. 1, the inlet channel 3 communicates with a first open end 22 and the outlet channel 4 communicates with a second open end 23. When liquid (water) flows through the heat storage device 1, the liquid firstly flows into the inlet channel 3, then the liquid flows into the heat exchange space 21 through the first partition plate 61, when the liquid flows out of the heat storage device 1, the liquid flows into the outlet channel 4 through the second partition plate 62, then the liquid flows out of the outlet channel 4, so that the liquid flowing into the inlet channel 3 can flow into the heat exchange space 21, and the liquid in the heat exchange space 21 can also flow out of the heat storage device 1.
In some embodiments of the present invention, as shown in fig. 1, both the first separator 61 and the second separator 62 may be provided with through holes (not shown in the drawings). The cross-sectional area of through-hole can be less than the cross-sectional area of heat-retaining structure 5, and preferably, the through-hole can set up to the round hole, so set up and can prevent that heat-retaining structure 5 from the through-hole motion to go out heat transfer space 21, also can realize the intercommunication of inlet flow channel 3 and heat transfer space 21, export flow channel 4 and heat transfer space 21.
It should be noted that, as shown in fig. 1, after the slag flushing water flows into the heat exchange space 21 from the inlet channel 3 at the lower end of the heat storage device 1, the heat storage structure 5 moves between the first partition plate 61 and the second partition plate 62 to complete heat exchange, and the slag flushing water after heat exchange flows out of the heat storage device 1 from the outlet channel 4 at the upper end of the heat storage device 1. Because the heat storage structure 5 is carried by the sluicing water and is up-and-down motion between first baffle 61 and second baffle 62, the sluicing water surrounds the heat storage structure 5 completely all around, and the full contact heat transfer in the sluicing rivers, heat storage structure 5 and sluicing water (liquid) disturbance each other simultaneously, consequently can improve the heat exchange efficiency of sluicing water and heat storage structure 5, and the heat release process of heat storage structure 5 is more stable simultaneously, can guarantee the steady operation of waste heat utilization system.
In some embodiments of the present invention, both the first separator 61 and the second separator 62 may be configured as a mesh structure. Preferably, the largest mesh point of the mesh structure may be set smaller than the cross-sectional area of the heat storage structure 5. This arrangement prevents the heat storage structure 5 from flowing out of the heat exchanging space 21 through the mesh of the mesh structure. It should be noted that, as shown in fig. 1, after the slag flushing water flows into the heat exchange space 21 from the inlet channel 3 at the lower end of the heat storage device 1, the heat storage structure 5 moves between the first partition plate 61 and the second partition plate 62 to complete heat exchange, the slag flushing water after heat exchange flows out of the heat storage device 1 from the outlet channel 4 at the upper end of the heat storage device 1, and meanwhile, the heat storage structure 5 and the slag flushing water (liquid) are disturbed with each other. Because the heat storage structure 5 is carried by the slag flushing water between the first partition plate 61 and the second partition plate 62 and moves up and down, the slag flushing water completely surrounds the periphery of the heat storage structure 5 and performs full contact heat exchange in the slag flushing water flow, so that the heat exchange efficiency of the slag flushing water and the heat storage structure 5 can be improved, meanwhile, the heat release process of the heat storage structure 5 is more stable, and the stable operation of a waste heat utilization system can be ensured.
In some embodiments of the present invention, at least one of the outer surface of the heat storage body 2, the outer surface of the inlet flow channel 3, and the outer surface of the outlet flow channel 4 is provided with a heat insulation layer, preferably, the outer surface of the heat storage body 2, the outer surface of the inlet flow channel 3, and the outer surface of the outlet flow channel 4 are provided with heat insulation layers, and the heat insulation layers have a heat insulation function, and by providing the heat insulation layers, the heat insulation layers can block heat energy transfer between an external environment and an internal environment of the heat storage device 1, and when a liquid exchanges heat with the heat storage structure 5 or no liquid flows through the heat storage device 1, the heat insulation layers can reduce heat energy loss to the external environment, and thus, the heat insulation layers can.
In some embodiments of the present invention, as shown in fig. 2, the heat storage structure 5 may include: a shell 51 and a phase change heat storage matrix 52. The housing 51 may define a sealed storage space 53, the phase-change heat storage base 52 is disposed in the storage space 53, and the phase-change heat storage base 52 may be made of a ternary mixed nitrate low-temperature phase-change material, or a mixture of calcium nitrate, sodium nitrate and potassium nitrate, for example: calcium nitrate: sodium nitrate: the potassium nitrate is 32:24:44, the phase change temperature of the phase change heat storage base body 52 is 80 ℃, and the phase change heat storage base body can also be made of a mixture of barium hydroxide octahydrate, calcium fluoride and gelatin, and the phase change temperature of the phase change heat storage base body 52 is 80 ℃. The phase-change heat storage base body 52 can absorb or emit a large amount of heat energy in the process of converting one phase into the other phase, so the phase-change heat storage base body 52 can be used as an excellent heat storage material in the heat storage device 1, the phase-change heat storage base body 52 can be limited in the storage space 53 due to the phase-change property of the phase-change heat storage base body 52, the shell 51 can transfer heat between the phase-change heat storage base body 52 and the slag flushing water, preferably, the shell 51 can be made of anti-corrosion metal or plastic materials, and the arrangement can ensure that the shell 51 has good sealing property and heat conductivity, and can also prevent the shell 51 from being corroded.
It should be noted that, by disposing the phase change heat storage base 52 in the casing 51, the heat of the slag flushing water can be effectively absorbed. Take the example that the temperature of the slag flushing hot water is 90 ℃ and the phase change temperature of the low-temperature phase change heat storage base body 52 is 80 ℃. In the slag flushing stage of the blast furnace, slag flushing hot water flows into the heat exchange space 21 from the inlet runner 3, the slag flushing hot water flows upwards to drive the heat storage structure 5 to roll between the two partition plates, heat in the slag flushing hot water is conducted to the internal phase change heat storage base body 52 through the shell 51, the phase change heat storage base body 52 absorbs the heat and then undergoes phase change, and the heat is stored in the phase change heat storage base body 52 in a latent heat mode.
In some embodiments of the present invention, as shown in fig. 2, the external profile of the heat storage structure 5 may be configured as a ball. The heat storage structure 5 with the spherical structure has a larger surface area under the condition of the same volume, so that the contact area between the heat storage structure 5 and the slag flushing hot water can be increased, and the heat exchange efficiency between the heat storage structure 5 and the slag flushing hot water can be improved.
In some embodiments of the invention, as shown in fig. 1 and 2, the diameter of the heat storage structure 5 may be configured to be 3-7 mm. Preferably, the diameter of the heat storage structure 5 is set to 5 mm. It should be noted that the latent heat of phase change of the phase change heat storage substrate can reach 100-.
In this application, through filling phase change heat-retaining base member 52 to casing 51 in, at heat-retaining 5 heat-retaining of heat-retaining structure and exothermic in-process, heat-retaining structure 5 is all washed away by the fluid of heat transfer all around, great improvement the efficiency of heat transfer. Meanwhile, when the slag flushing water and the circulating water flow upwards to carry the heat storage structure 5 to move, the heat storage structure 5 is continuously exchanged up and down and turned over back and forth between the two layers of partition plates, the heat storage and heat release rates of all the heat storage structures 5 in the whole heat storage device 1 are basically consistent, the heat storage process is faster, and the heat release process is more stable. Through laboratory research and analog computation, adopt the operation mode of the 5 heat-retaining of heat-retaining structure, compare in the operation mode of the 5 heat-retaining structures that adopt 10mm, 5 diameters of heat-retaining structure set up to 5mm heat storage ability increase 50%, heat transfer effect reinforcing 25%, exothermic temperature stable time prolongs about 30%, have improved heat-retaining and heat transfer performance of heat-retaining device 1 greatly.
In some embodiments of the present invention, as shown in fig. 2, the phase change temperature of the phase change thermal storage matrix 52 is T, and satisfies the relationship: t is more than or equal to 75 ℃ and less than or equal to 85 ℃, and preferably, the phase-change heat storage base body 52 can be set as the phase-change heat storage base body 52 with the phase-change temperature of 80 ℃. Because the slag flushing water is high-temperature hot water at 86-90 ℃, the phase-change heat storage base body 52 absorbs the most heat at the phase-change temperature and is most suitable for being used as a heat storage material, the arrangement can ensure that the phase-change heat storage base body 52 can generate phase change, and the heat storage structure 5 has the heat storage and heat release functions, so that the working reliability of the heat storage structure 5 can be ensured.
In some embodiments of the present invention, as shown in fig. 1, in the height direction of the heat exchanging space 21, the distance between the first partition board 61 and the second partition board 62 is D, the height of the heat storage structure 5 is H, and the relation 1/3D ≦ H ≦ 2/3D is satisfied. When liquid passes through the heat storage device 1, the liquid and the heat storage structure 5 generate heat exchange, the heat storage structure 5 moves in the heat exchange space 21, if the setting height of the heat storage structure 5 is too small, the utilization rate of the heat exchange space 21 is low, the heat storage capacity of the heat storage device 1 is low, if the setting height of the heat storage structure 5 is too high, the heat storage structure 5 cannot move in the heat exchange space 21, the heat storage structure 5 cannot be fully contacted with the liquid, and the heat storage capacity of the heat storage device 1 is low. Therefore, H is not less than 1/3D and not more than 2/3D, enough heat storage structures 5 can be arranged in the heat exchange space 21, the heat storage and release capacity of the heat storage device 1 can be guaranteed, the heat storage structures 5 can move in the heat exchange space 21, the heat storage structures 5 can be guaranteed to be in full contact with liquid, and therefore the heat exchange efficiency of the heat storage structures 5 can be guaranteed.
In some embodiments of the invention, as shown in fig. 1, the free end of the inlet channel 3 may be provided with an inlet 31 and the free end of the outlet channel 4 may be provided with an outlet 41. Import 31 and export 41 set up respectively in the lower extreme and the upper end of heat-retaining device 1, so set up and can guarantee that liquid flows through heat transfer space 21 of heat-retaining device 1 from supreme down, and heat-retaining structure 5 can fully contact with liquid, can improve the heat-retaining ability of heat-retaining device 1.
In some embodiments of the invention, as shown in fig. 1, the cross-sectional area of the inlet channel 3 increases gradually in the direction from the free end of the inlet channel 3 to the first open end 22, i.e. from the lower end to the upper end of the inlet channel 3 in fig. 1, and the cross-sectional area of the outlet channel 4 increases gradually in the direction from the free end of the outlet channel 4 to the second open end 23, i.e. from the upper end to the lower end of the outlet channel 4 in fig. 1. When the slag flushing hot water (liquid) flows into the inlet runner 3 from the inlet 31, the flow speed of the liquid can be reduced due to the fact that the cross section area of the inlet runner 3 is gradually increased, the heat storage structure 5 in the heat exchange space 21 can be in full contact with the liquid and can perform heat exchange, the heat exchange efficiency of the liquid in the heat exchange space 21 can be improved, when the liquid flows to the outlet 41 from the outlet runner 4, the cross section area of the outlet runner 4 is gradually reduced, the flow speed of the liquid is improved, the liquid can quickly flow into a waste heat utilization system, and therefore the organic working medium can be heated more quickly.
In the description of the present invention, it is to be understood that the terms "length," "width," "thickness," "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to 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, are not to be considered as limiting.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (13)
1. A heat storage device, comprising:
the heat storage body defines a heat exchange space;
the inlet channel and the outlet channel are both communicated with the heat exchange space;
the heat storage structure with the functions of storing and releasing heat is arranged in the heat exchange space.
2. The heat storage device of claim 1, further comprising: the heat exchange space comprises a first partition plate and a second partition plate, wherein the heat exchange space is provided with a first open end and a second open end which are opposite to each other, the first partition plate is arranged at the first open end, and the second partition plate is arranged at the second open end.
3. The heat storage device of claim 2 wherein the inlet channel communicates with the first open end and the outlet channel communicates with the second open end.
4. The heat storage device as claimed in claim 2 or 3, characterized in that the first and second partitions are provided with through-holes.
5. The heat storage device as claimed in claim 2 or 3, characterized in that the first and second partitions are each configured as a mesh structure.
6. The heat storage device of claim 1, wherein at least one of the outer surface of the heat storage body, the outer surface of the inlet channel, and the outer surface of the outlet channel is provided with an insulating layer.
7. The heat storage device of claim 1, wherein the heat storage structure comprises: the shell defines a sealed storage space, and the phase-change heat storage base body is arranged in the storage space.
8. Heat storage device according to claim 1 or 7, characterised in that the outer contour of the heat storage structure is configured as a ball.
9. The heat storage device as claimed in claim 8, characterized in that the diameter of the heat storage structure is configured to be 3-7 mm.
10. The heat storage device of claim 7, wherein the phase change temperature of the phase change heat storage matrix is T, satisfying the relationship: t is more than or equal to 75 ℃ and less than or equal to 85 ℃.
11. The heat storage device of claim 2, wherein in the height direction of the heat exchange space, the distance between the first partition plate and the second partition plate is D, the setting height of the heat storage structure is H, and the relation is satisfied: 1/3D is less than or equal to H is less than or equal to 2/3D.
12. The heat storage device as claimed in claim 3, characterized in that the free end of the inlet channel is provided with an inlet and the free end of the outlet channel is provided with an outlet.
13. The heat storage device of claim 3 wherein the cross-sectional area of the inlet channel increases in a direction from the free end of the inlet channel to the first open end;
the cross-sectional area of the outlet flow passage increases in a direction from the free end of the outlet flow passage to the second open end.
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| CN202011446736.3A CN112985140A (en) | 2020-12-09 | 2020-12-09 | Heat storage device |
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| CN202011446736.3A CN112985140A (en) | 2020-12-09 | 2020-12-09 | Heat storage device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432470A (en) * | 2021-07-16 | 2021-09-24 | 上海应用技术大学 | Sensible heat and thermochemistry coupling heat storage method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432470A (en) * | 2021-07-16 | 2021-09-24 | 上海应用技术大学 | Sensible heat and thermochemistry coupling heat storage method and device |
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