CN219869254U - Phase change material heat storage system - Google Patents
Phase change material heat storage system Download PDFInfo
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- CN219869254U CN219869254U CN202320640723.2U CN202320640723U CN219869254U CN 219869254 U CN219869254 U CN 219869254U CN 202320640723 U CN202320640723 U CN 202320640723U CN 219869254 U CN219869254 U CN 219869254U
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- phase change
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- 238000005338 heat storage Methods 0.000 title claims abstract description 116
- 239000012782 phase change material Substances 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 150
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims description 27
- 230000001502 supplementing effect Effects 0.000 claims description 10
- 238000007872 degassing Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 4
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 9
- 239000012071 phase Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 230000005611 electricity Effects 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- DCAYPVUWAIABOU-UHFFFAOYSA-N hexadecane Chemical compound CCCCCCCCCCCCCCCC DCAYPVUWAIABOU-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000011153 ceramic matrix composite Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009849 vacuum degassing Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Abstract
The utility model discloses a phase change material heat storage system, which comprises a circulating pipeline and a heat storage unit; the heat storage unit comprises a heat storage pipeline and a heat storage device, and the heat storage device is made of phase change materials; the circulating pipeline comprises a water outlet pipeline and a water return pipeline; the inlet end of the water outlet pipeline is connected with the terminal equipment, the water outlet pipeline is sequentially provided with a main pump and a heating device, the outlet end of the water outlet pipeline is connected with the inlet end of the water return pipeline through a main valve 7, and the outlet end of the water return pipeline is connected with the terminal equipment; a secondary pump is connected in parallel between the water outlet pipeline and the water return pipeline, the outlet end of the secondary pump is connected with the water outlet pipeline, and the outlet end of the secondary pump is positioned between the heating device and the main pump; a heat storage pipeline is connected in parallel between the water outlet pipeline and the water return pipe, the inlet end of the heat storage pipeline is connected with the water outlet pipeline, and the inlet end of the heat storage pipeline is positioned between the main valve and the heating device; the heat storage device is arranged in the middle of the heat storage pipeline, and a control valve is arranged on the heat storage pipeline. By means of the design, the heat supply of the phase-change material can be kept constant.
Description
Technical Field
The utility model belongs to the technical field of phase-change heat storage equipment, and particularly relates to a phase-change material heat storage system.
Background
Along with the promotion of national energy conservation and emission reduction carbon neutralization policy, the heat storage module unit utilizes low-ebb electricity at night to store energy and releases heat in the daytime at the electricity peak period to realize the peak shifting and valley filling of electric power in the face of severe situation of electric power supply shortage. However, due to the physical limitation of the heat storage module of the inorganic phase change material, the user side in the heat supply system cannot obtain stable heat supply temperature, and the popularization of the application scene is limited.
The latent heat storage (phase change heat storage) of an inorganic phase change material is a technology for energy storage by utilizing the principle that substances absorb or release phase change latent heat in solidification/melting, condensation/gasification, desublimation/sublimation and other forms of phase change processes.
Inorganic phase change materials are mainly used in low and high temperature environments, including crystalline hydrated salts, molten salts (nitrates, carbonates, halides, etc.), metals. Wherein, the phase separation easily occurs due to inconsistent densities of the components in the phase change process of the hydrated salt, thereby limiting the application of the hydrated salt; molten salt is generally used in the fields of industrial waste heat recovery and aerospace; metals are generally composed of low melting point metals and alloys thereof, have very high phase transition enthalpy values, good thermal stability and high heat conduction capacity, and can be used for recovering waste heat or storing heat in power plants.
The distribution of the heat storage capacity temperature change is as follows:
total heat storage capacity at 20-91 ℃): 650MJ
Sensible heat capacity in liquid state (78 ℃ -91 ℃): about 61MJ
Phase transition (78 ℃ -75.5 ℃) capacity: about 287MJ
Solid state (75.5 ℃ -20 ℃) sensible heat capacity: about 302MJ
The heat release temperature of the heat storage module can be from 91 ℃ to 50 ℃ (the heat conduction of the material in a solid state is limited), so that the heat release temperature interval span is large, and the heat supply temperature is not constant, so that the heat user requirement cannot be met.
The patent with the application number of CN202210878583.2 discloses a metal phase change heat storage device and a metal phase change heat storage module, wherein the metal phase change heat storage device comprises a heat storage component, a heat exchange component and a heat transfer component, the heat storage component comprises a heat storage part and a heat insulation part, a containing cavity is arranged in the heat storage part and is used for containing a metal phase change material, and the heat insulation part coats the outer wall of the heat storage part and exposes at least one side of the outer wall; the heat storage part is made of ceramic matrix composite materials; the heat exchange component is arranged on one side of the exposed outer wall; the heat transfer assembly is arranged between the exposed outer wall and the heat exchange assembly, and is used for transferring heat to the heat storage part or the heat exchange assembly. In this way encapsulation of the phase change material can be achieved.
Disclosure of Invention
The utility model aims to provide a phase change material heat storage system, which aims to solve the following technical problems in the background art:
the heat release temperature of the heat storage module can be from 91 ℃ to 50 ℃ (the heat conduction of the material in a solid state is limited), so that the heat release temperature interval span is large, and the heat supply temperature is not constant, so that the heat user requirement cannot be met.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a phase change material heat storage system comprises a circulating pipeline and a heat storage unit; the heat storage unit comprises a heat storage pipeline and a heat storage device, and the heat storage device is made of phase change materials; the circulating pipeline comprises a water outlet pipeline and a water return pipeline;
the inlet end of the water outlet pipeline is connected with the terminal equipment, the water outlet pipeline is sequentially provided with a main pump and a heating device, the outlet end of the water outlet pipeline is connected with the inlet end of the water return pipeline through a main valve, and the outlet end of the water return pipeline is connected with the terminal equipment;
a secondary pump is connected in parallel between the water outlet pipeline and the water return pipeline, the outlet end of the secondary pump is connected with the water outlet pipeline, and the outlet end of the secondary pump is positioned between the heating device and the main pump;
a heat storage pipeline is connected in parallel between the water outlet pipeline and the water return pipe, the inlet end of the heat storage pipeline is connected with the water outlet pipeline, and the inlet end of the heat storage pipeline is positioned between the main valve and the heating device; the heat storage device is arranged in the middle of the heat storage pipeline, and a control valve is arranged on the heat storage pipeline.
Further, the water outlet pipeline is positioned between the inlet end and the main pump and is communicated with the tap water pipeline.
Further, the position of the water return pipeline close to the secondary pump is connected with a degassing and water supplementing device through a treatment pipe; the degassing and water supplementing device is used for exhausting gas in the system and supplementing water to the system.
Further, the heat storage device is at least provided with two sets, and the two sets of heat storage devices are respectively connected in parallel between the water outlet pipeline and the water return pipeline through matched heat storage pipelines.
Further, a static pressure valve is arranged at a position, close to the inlet end, on the heat storage pipeline.
Further, a temperature sensor is arranged on the heat storage device; the main valve and the control valve are both solenoid valves; the temperature sensor, the main valve and the control valve are all electrically connected with the central processing unit.
Further, an air cooling unit is connected in parallel between the water outlet pipeline and the water return pipeline, and the air cooling unit comprises an air cooling device and an air cooling pipeline; the inlet end of the air cooling pipeline is communicated with the water outlet pipeline, the outlet end of the air cooling device is communicated with the water return pipeline, and the air cooling device is arranged in the middle of the air cooling pipeline.
Compared with the prior art, the utility model has the following beneficial effects:
the design of the heat storage unit can heat and store heat when the electricity price is low, and release heat when the electricity price is high, so that reasonable utilization of electric energy is realized.
The heat storage unit and the pipeline are connected in parallel, the quantity of water entering the heat storage device can be controlled by controlling the opening and closing degree of the main valve and the control valve, the temperature of water in the water return pipe can be controlled by controlling the quantity of water entering the heat storage device, namely, the constant water temperature in the water return pipeline is realized, namely, the constant water temperature entering the terminal equipment is ensured, and a user can conveniently select a proper temperature.
Drawings
FIG. 1 is a schematic view of the general arrangement of the present utility model;
FIG. 2 is an enlarged schematic view of FIG. 1 at A;
FIG. 3 is an enlarged schematic view of FIG. 1 at B;
fig. 4 is an enlarged schematic view at C of fig. 1.
The marks in the figure: the device comprises a 1-air cooling pipeline, a 2-air cooling device, a 3-water return pipeline, a 4-water outlet pipeline, a 5-heat storage pipeline, a 6-heat storage device, a 7-main valve, an 8-control valve, a 9-secondary pump, a 10-degassing and water supplementing device, a 11-treatment pipe, a 12-main pump and a 13-terminal device.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
The phase change material used in the present utility model is a solid-liquid phase change material, and the present utility model is not limited to the material of the heat storage device 6, and the phase change material may be a higher aliphatic hydrocarbon (for example, n-hexadecane) or a metal phase change material (for example, lead-tin alloy), and it is only necessary to achieve sensible heat storage and long-term heat storage. The phase change material heat storage system comprises a circulating pipeline and a heat storage unit; the heat storage unit comprises a heat storage pipeline 5 and a heat storage device 6, and the heat storage device 6 is made of a phase change material; the circulating pipeline comprises a water outlet pipeline 4 and a water return pipeline 3;
the inlet end of the water outlet pipeline 4 is connected with the terminal equipment 13, the water outlet pipeline 4 is sequentially provided with a main pump 12 and a heating device, the outlet end of the water outlet pipeline 4 is connected with the inlet end of the water return pipeline 3 through a main valve 7, and the outlet end of the water return pipeline 3 is connected with the terminal equipment 13. The heating device adopts an electric heater, and the main pump 12 adopts a circulating pump.
A secondary pump 9 is connected in parallel between the water outlet pipeline 4 and the water return pipeline 3, the outlet end of the secondary pump 9 is connected with the water outlet pipeline 4, and the outlet end of the secondary pump 9 is positioned between the heating device and the main pump 12; the secondary pump 9 adopts a high-temperature-resistant water pump so as to ensure that the secondary pump 9 can work normally when the system stores heat.
A heat storage pipeline 5 is connected in parallel between the water outlet pipeline 4 and the water return pipe, the inlet end of the heat storage pipeline 5 is connected with the water outlet pipeline 4, and the inlet end of the heat storage pipeline 5 is positioned between the main valve 7 and the heating device; the heat storage device 6 is arranged in the middle of the heat storage pipeline 5, and a control valve 8 is arranged on the heat storage pipeline 5.
Specifically, in actual use, the method is operated in the following conditions:
in the first case, at the normal electricity price, the state of the system is adjusted such that the main valve 7 is opened, the control valve 8 is closed, the main pump 12 is opened, and the sub pump 9 is closed. The main pump 12 pumps water in the terminal equipment 13 into the water outlet pipeline 4, water in the water outlet pipeline 4 is heated after passing through the heating device, the heated water flows into the water return pipeline 3 through the opened main valve 7, the water returns to the terminal equipment 13 after passing through the water return pipeline 3, and then the water is pumped into the water outlet pipeline 4 through the main pump 12, so that the water is reciprocated, and the circulation is completed.
In the second case, the electricity price at night is low; the state of the system is regulated such that the main valve 7 is closed, the control valve 8 is open, the main pump 12 is closed, and the secondary pump 9 is open. The secondary pump 9 pumps water in the water return pipe into the water outlet pipe, water in the water outlet pipe is heated after passing through the heating device, the heated water enters the heat storage device 6 through the heat storage pipeline 5, and the heat storage device 6 absorbs heat to store heat. The water flow enters the water return pipeline 3 through the outlet end of the heat storage pipeline 5 after passing through the heat storage device 6, and then is pumped into the water outlet pipeline 4 through the secondary pump 9 to complete circulation.
In the third case, when the power consumption is high in the daytime, the state of the system is regulated, so that the main valve 7 is opened, the control valve 8 is opened, the main pump 12 is opened, and the secondary pump 9 is closed. The water in the terminal is pumped into the water outlet pipeline 4 by the main pump 12, and the water in the water outlet pipeline is heated after passing through the heating device; at this time, the water flow is divided into two flows, one of the two flows passes through the main valve 7 and then enters the water return pipeline 3, the other water enters the heat storage device 6 through the heat storage pipeline 5 and is heated, the water in the water return pipeline enters the water return pipeline 3 through the heat storage pipeline, the water in the water return pipeline enters the terminal equipment 13, and the water in the terminal equipment 13 enters the water outlet pipeline 4 through the main pump 12, so that the circulation is completed. It should be noted that, the amount of water entering the heat storage device 6 can be controlled by controlling the opening and closing degrees of the main valve 7 and the control valve 8, and the temperature of water in the water return pipe can be controlled by controlling the amount of water entering the heat storage device 6, that is, the water temperature in the water return pipe 3 is constant, that is, the water temperature entering the terminal device 13 is ensured to be constant, so that a user can conveniently select a proper temperature. In the circulation process, energy and electricity can be saved by controlling the heating degree of the heating device.
In a preferred embodiment, the water outlet line 4 is connected to the mains water line between the inlet end and the main pump 12. The water supplementing and pressure fixing are carried out on the system by connecting a tap water pipeline.
In a preferred embodiment, the water return line 3 is connected to a degassing and water-supplementing device 10 via a treatment line 11 at a position close to the secondary pump 9; the degassing and water replenishing device 10 is used for discharging gas in the system and replenishing water to the system. Specifically, the degassing and water supplementing device 10 adopts a constant-pressure water supplementing vacuum degassing unit in the prior art, such as DN600-DN3200. The deaeration and water make-up device 10 may also employ a head tank. The degassing and water-replenishing device 10 is used for replenishing water consumed in the circulation process of the system and discharging gas generated in the circulation process of the system.
In a preferred embodiment, the heat storage devices 6 are provided with at least two sets, and the two sets of heat storage devices 6 are respectively connected in parallel between the water outlet pipeline 4 and the water return pipeline 3 through matched heat storage pipelines 5. Specifically, the heat storage devices 6 are made of phase change materials, so that a plurality of sets of heat storage devices 6 are arranged for the convenience of manufacturing the heat storage devices 6 and the stability of the heat storage devices 6 is ensured, and the heat storage devices 6 are connected in parallel, so that the heat storage devices 6 cannot be affected by each other, and even if one heat storage device 6 damages another heat storage device 6, the heat storage devices can be used. Meanwhile, the opening condition of each control valve 8 can be controlled by adopting a parallel connection mode, so that water entering each heat storage device 6 is distributed, the full utilization of the heat storage devices 6 is realized, and the stability of the system can be effectively improved. Further preferably, a static pressure valve is arranged on the heat storage pipeline 5 near the inlet end. The static pressure valve is used for guaranteeing the flow and pressure balance of each heat storage device 6.
In a preferred embodiment, the thermal storage device 6 is provided with a temperature sensor; the main valve 7 and the control valve 8 are electromagnetic valves; the temperature sensor, the main valve 7 and the control valve 8 are all electrically connected with the central processing unit. After the central processing unit is arranged, the opening and closing of each valve can be remotely controlled, and meanwhile, the central processing unit is convenient for automatically controlling the opening and closing of each valve. The temperature sensor detects the temperature of the water coming out of the heat storage device 6, and transmits a temperature signal to the central processing unit, and the central processing unit controls the opening and closing conditions of the main valve 7 and the control valve 8 according to the water temperature actually obtained, so as to control the obtained water temperature.
In a preferred embodiment, an air cooling unit is connected in parallel between the water outlet pipeline 4 and the water return pipeline 3, and the air cooling unit comprises an air cooling device 2 and an air cooling pipeline 1; the inlet end of the air cooling pipeline 1 is communicated with the water outlet pipeline 4, the outlet end of the air cooling device 2 is communicated with the water return pipeline 3, and the air cooling device 2 is arranged in the middle of the air cooling pipeline 1. The air cooling unit is used for cooling water in the system in summer. The water in the water outlet pipe is led into the air cooling device 2 for heat dissipation, and the heat dissipation water enters the water return pipe.
In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A phase change material thermal storage system, characterized by: comprises a circulating pipeline and a heat storage unit; the heat storage unit comprises a heat storage pipeline (5) and a heat storage device (6), and the heat storage device (6) is made of a phase change material; the circulating pipeline comprises a water outlet pipeline (4) and a water return pipeline (3);
the inlet end of the water outlet pipeline (4) is connected with the terminal equipment (13), the water outlet pipeline (4) is sequentially provided with a main pump (12) and a heating device, the outlet end of the water outlet pipeline (4) is connected with the inlet end of the water return pipeline (3) through a main valve (7), and the outlet end of the water return pipeline (3) is connected with the terminal equipment (13);
a secondary pump (9) is connected in parallel between the water outlet pipeline (4) and the water return pipeline (3), the outlet end of the secondary pump (9) is connected with the water outlet pipeline (4), and the outlet end of the secondary pump (9) is positioned between the heating device and the main pump (12);
a heat storage pipeline (5) is connected in parallel between the water outlet pipeline (4) and the water return pipe, the inlet end of the heat storage pipeline (5) is connected with the water outlet pipeline (4), and the inlet end of the heat storage pipeline (5) is positioned between the main valve (7) and the heating device; the heat storage device (6) is arranged in the middle of the heat storage pipeline (5), and a control valve (8) is arranged on the heat storage pipeline (5).
2. A phase change material thermal storage system according to claim 1, wherein: the water outlet pipeline (4) is positioned between the inlet end and the main pump (12) and is communicated with a tap water pipeline.
3. A phase change material thermal storage system according to claim 1, wherein: the position of the water return pipeline (3) close to the secondary pump (9) is connected with a degassing and water supplementing device (10) through a treatment pipe (11); the degassing and water supplementing device (10) is used for exhausting gas in the system and supplementing water to the system.
4. A phase change material thermal storage system according to claim 1, wherein: the heat storage devices (6) are at least provided with two sets, and the two sets of heat storage devices (6) are respectively connected in parallel between the water outlet pipeline (4) and the water return pipeline (3) through matched heat storage pipelines (5).
5. A phase change material thermal storage system according to claim 1, wherein: a static pressure valve is arranged at the position, close to the inlet end, of the heat storage pipeline (5).
6. A phase change material thermal storage system according to claim 1, wherein: a temperature sensor is arranged on the heat storage device (6); the main valve (7) and the control valve (8) are electromagnetic valves; the temperature sensor, the main valve (7) and the control valve (8) are all electrically connected with the central processing unit.
7. A phase change material thermal storage system according to claim 1, wherein: an air cooling unit is connected in parallel between the water outlet pipeline (4) and the water return pipeline (3), and comprises an air cooling device (2) and an air cooling pipeline (1); the inlet end of the air cooling pipeline (1) is communicated with the water outlet pipeline (4), the outlet end of the air cooling device (2) is communicated with the water return pipeline (3), and the air cooling device (2) is arranged in the middle of the air cooling pipeline (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320640723.2U CN219869254U (en) | 2023-03-28 | 2023-03-28 | Phase change material heat storage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320640723.2U CN219869254U (en) | 2023-03-28 | 2023-03-28 | Phase change material heat storage system |
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| Publication Number | Publication Date |
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| CN219869254U true CN219869254U (en) | 2023-10-20 |
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| CN202320640723.2U Active CN219869254U (en) | 2023-03-28 | 2023-03-28 | Phase change material heat storage system |
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| Country | Link |
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| CN (1) | CN219869254U (en) |
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2023
- 2023-03-28 CN CN202320640723.2U patent/CN219869254U/en active Active
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