CN220489433U - Solar heat storage cascade utilization device - Google Patents
Solar heat storage cascade utilization device Download PDFInfo
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- CN220489433U CN220489433U CN202321166825.1U CN202321166825U CN220489433U CN 220489433 U CN220489433 U CN 220489433U CN 202321166825 U CN202321166825 U CN 202321166825U CN 220489433 U CN220489433 U CN 220489433U
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- heat storage
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- water
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- 238000005338 heat storage Methods 0.000 title claims abstract description 100
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 113
- 239000007788 liquid Substances 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 14
- 238000003795 desorption Methods 0.000 claims description 10
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 description 9
- 238000004146 energy storage Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002156 adsorbate Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013310 covalent-organic framework Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012621 metal-organic framework Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model discloses a solar heat storage cascade utilization device, which aims to solve the problem that low-grade energy in the field of solar heat utilization cannot be utilized and energy is wasted; the first-stage heat storage mechanism is communicated with the reservoir and is used for exchanging heat of water flowing out of the reservoir; the secondary heat storage mechanism is communicated with the reservoir, a circulating pipeline is arranged on the primary heat storage mechanism, the circulating pipeline is arranged in the secondary heat storage mechanism in a penetrating way, and the secondary heat storage mechanism is used for exchanging heat of water flowing out of the reservoir; and the water supply pipeline is communicated with the primary heat storage mechanism and the secondary heat storage mechanism. By using the solar heat storage cascade utilization device, cascade utilization and accumulation can be carried out on high-grade and low-grade heat energy, and energy waste is reduced.
Description
Technical Field
The utility model relates to the technical field of solar heat utilization, in particular to a solar heat storage cascade utilization device.
Background
Under the current global energy pattern, the unutilized low-grade heat energy, such as solar energy, exceeds more than 30% of the total energy consumption. A serious problem is faced in the process of utilizing solar energy, namely, the maldistribution of the air is immediate, which leads to mismatching between the demand and the application. If the solar irradiation intensity is high, the air temperature is high, and the demand of people for hot water is not strong. And when the demand is high in overcast or rainy days, the corresponding solar energy supply is lacking.
The traditional solar water heater has limited heat preservation effect, cannot store heat energy for a long time, and when the contradiction is relieved by adopting an energy storage mode, high-grade energy, such as high-temperature water (100 ℃), can be stored preferentially due to the problems of the volume of a water tank, a large amount of heat preservation materials are needed, the storage time is still short (1-2 days), and the heat dissipation is high. The storage and utilization mode has low energy density and low-grade energy cannot be utilized, so that part of energy waste is caused.
Disclosure of Invention
The utility model provides a solar heat storage cascade utilization device, which aims at solving at least one of the technical problems existing in the prior art.
The technical scheme of the utility model relates to a solar heat storage cascade utilization device, which comprises the following components:
the solar heat collector is connected with the reservoir;
the first-stage heat storage mechanism is communicated with the reservoir and is used for exchanging heat of water flowing out of the reservoir;
the secondary heat storage mechanism is communicated with the reservoir, a circulating pipeline is arranged on the primary heat storage mechanism, the circulating pipeline penetrates through the secondary heat storage mechanism, and the secondary heat storage mechanism can absorb heat from the circulating pipeline and can be used for exchanging heat of water flowing out of the reservoir;
and the water supply pipeline is communicated with the primary heat storage mechanism and the secondary heat storage mechanism.
Further, the first-stage heat storage mechanism comprises a first heat exchanger and a first flow pipe, the circulating pipeline is arranged on the first heat exchanger, the first flow pipe is respectively communicated with the reservoir and the water supply pipeline, and the first heat exchanger is used for exchanging heat with water flowing through the first flow pipe.
Further, the second-stage heat storage mechanism comprises a second heat exchanger and a second flow pipe, the second flow pipe is respectively communicated with the reservoir and the water supply pipeline, and the second heat exchanger is used for exchanging heat of water flowing through the second flow pipe.
Further, the first heat exchanger and the second heat exchanger are respectively provided with a solid-liquid mixture capable of being desorbed and adsorbed, the solid-liquid mixture stores heat in the desorption process, and heat is released in the adsorption process.
Further, the solid adsorbate in the solid-liquid mixture in the first heat exchanger is provided as zeolite and the liquid as water.
Further, a throttle valve is arranged in each of the first heat exchanger and the second heat exchanger, and the throttle valve is used for controlling contact or separation of the solid-liquid mixture.
Further, the cistern intercommunication has the water outlet pipeline, and first order heat accumulation mechanism and second grade heat accumulation mechanism all communicate the water outlet pipeline, are provided with the control valve on the water outlet pipeline.
Further, a control valve is arranged on the water supply pipeline.
Further, the reservoir is communicated with two water outlet pipelines, the primary heat storage mechanism and the secondary heat storage mechanism are respectively communicated with one water outlet pipeline, and the water outlet pipeline is provided with a control valve.
The beneficial effects of the utility model are as follows.
1. When the weather is clear, the solar heat collector collects solar energy and heats water in the reservoir, the heated water flows through the first-stage heat storage mechanism to store heat, the first-stage heat storage mechanism stores high-grade heat energy, low-grade heat energy enters the circulating pipeline along with water vapor or air in the first-stage heat storage mechanism and flows through the second-stage heat storage mechanism, the second-stage heat storage mechanism absorbs heat from the circulating pipeline and stores the low-grade heat energy, so that the heat energy is utilized in a cascade mode, both the high-grade heat energy and the low-grade heat energy are collected and utilized, and the energy loss waste is reduced.
Drawings
Fig. 1 is a schematic view of a solar heat storage cascade utilization device according to an embodiment of the utility model.
Reference numerals:
a solar collector 100;
reservoir 200, outlet line 210, control valve 220;
the heat storage system comprises a first-stage heat storage mechanism 300, a first heat exchanger 310, a first flow pipe 320, a circulating pipe 330 and a throttle valve 340;
a second heat storage mechanism 400, a second heat exchanger 410, and a second flow pipe 420;
a water supply line 500;
a solid-liquid mixture 600.
Detailed Description
The following description will describe several embodiments of the present utility model, including the embodiments corresponding to the accompanying drawings, it being understood that the drawings are for aiding in the understanding of the technical features and technical solutions of the present utility model, and should not be construed as limiting the scope of the present utility model.
The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, aspects, and effects of the present utility model. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
It should be noted that, unless explicitly defined otherwise, when a feature is referred to as being "fixed," "connected," "mounted," or "disposed" on another feature, it may be directly "fixed," "connected," "mounted," or "disposed" on another feature, or may be indirectly "fixed," "connected," "mounted," or "disposed" on another feature, it being understood that the words "fixed," "connected," "mounted," or "disposed" are to be interpreted broadly, and that one skilled in the art may reasonably ascertain the specific meaning of the above words in this disclosure, in connection with the specific contents of the technical solutions.
It should be noted that, the description of the orientation or positional relationship indicated by the upper, lower, left, right, top, bottom, front, rear, inner, outer, etc. used in the present utility model is based on the orientation or positional relationship of the drawings or the embodiments, only for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in the specific orientation, and thus should not be construed as limiting the present utility model.
It is noted that the term "and/or" as used in the present utility model includes any combination of one or more of the listed items, meaning one or more, meaning at least two, greater than, less than, exceeding, etc. are understood to exclude this number, and the above, below, within, etc. are understood to include this number.
It should be noted that, if the first and second descriptions are only used for distinguishing technical features in the present utility model, the description should not be construed as indicating or implying relative importance or implying the number of the indicated technical features or implying the precedence relationship of the indicated technical features.
It is to be understood that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art unless explicitly defined otherwise. The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Referring to fig. 1, a solar heat storage cascade utilization apparatus according to the present utility model includes a solar collector 100 connected to a water reservoir 200; the primary heat storage mechanism 300 is communicated with the reservoir 200, and the primary heat storage mechanism 300 is used for exchanging heat of water flowing out of the reservoir 200; the secondary heat storage mechanism 400 is communicated with the reservoir 200, the primary heat storage mechanism 300 is provided with a circulating pipeline 330, the circulating pipeline 330 is arranged in the secondary heat storage mechanism 400 in a penetrating way, and the secondary heat storage mechanism 400 can absorb heat from the circulating pipeline 330 and can be used for exchanging heat of water flowing out of the reservoir 200; the water supply line 500 communicates the primary thermal storage mechanism 300 and the secondary thermal storage mechanism 400.
With the solar heat storage cascade utilization device, when the weather is clear, the solar heat collector 100 collects solar energy and heats water in the reservoir 200, the heated water flows through the primary heat storage mechanism 300 to store heat, the primary heat storage mechanism 300 stores high-grade heat energy, low-grade heat energy enters the circulation pipeline 330 along with water vapor or air in the primary heat storage mechanism 300 and flows through the secondary heat storage mechanism 400, the secondary heat storage mechanism 400 absorbs heat from the circulation pipeline 330 and stores part of the low-grade heat energy, so that cascade utilization is carried out on the heat energy, both the high-grade heat energy and the low-grade heat energy are collected and utilized, and the energy loss is reduced.
According to some embodiments of the present utility model, referring to fig. 1, the primary heat storage mechanism 300 includes a first heat exchanger 310 and a first flow pipe 320, the circulation pipe 330 is disposed on the first heat exchanger 310, the first flow pipe 320 is respectively connected to the reservoir 200 and the water supply pipe 500, the first heat exchanger 310 is used for exchanging heat with water flowing through the first flow pipe 320, when the intensity of solar radiation is high, the solar heat collector 100 heats water in the reservoir 200, the heated water flows through the first heat exchanger 310, the first heat exchanger 310 absorbs and accumulates heat energy in the water, the water temperature is reduced while the energy is stored, and at this time, a user can directly obtain hot water with a proper temperature; in cloudy or rainy days, solar radiation is weak, and the solar collector 100 has insufficient heating capacity for water in the reservoir 200, and at this time, heat can be released from the water flowing through the first heat exchanger 310 to heat the water, so that a user can obtain hot water with a proper temperature.
Further, referring to fig. 1, the secondary heat storage mechanism 400 includes a second heat exchanger 410 and a second flow pipe 420, the second flow pipe 420 being respectively connected to the water reservoir 200 and the water supply pipe 500, the second heat exchanger 410 being for heat exchanging water flowing through the second flow pipe 420.
In the above embodiment, during the energy storage stage, the solar heat collector 100 heats the water in the water storage tank 200, at this time, the hot water in the water storage tank 200 flows through the first-stage heat storage mechanism 300, exchanges heat with the first heat exchanger 310 in the first flow pipe 320, the first heat exchanger 310 absorbs heat and stores heat energy, meanwhile, the heated air or generated water vapor in the first heat exchanger 310 circulates through the circulation pipeline, and exchanges heat with the second heat exchanger 410 in the second-stage heat storage mechanism 400 in the circulation pipeline, so that the heat of the air or the water vapor is absorbed and stored by the second heat exchanger 410, and thus, the heat energy of the heat water is reciprocally circulated, so that the first-stage heat storage mechanism 300 absorbs and stores the high-grade heat energy of the hot water of the water storage tank 200, the second-stage heat storage mechanism 400 absorbs and stores the remaining part of low-grade heat energy after being collected by the first-stage heat storage mechanism 300, thereby realizing the cascade utilization of energy, and during the water supply stage, according to different demands of users, the water can be made to generate hot water with higher temperature through the first-stage heat storage mechanism 300 or generate hot water with lower temperature through the second-stage heat storage mechanism 400; or the water is heated by the first-stage heat storage mechanism 300, and then is heated by the second-stage heat storage mechanism 400 after being consumed, so that the energy loss is reduced, and the utilization rate is improved.
When the primary heat storage mechanism 300 and the secondary heat storage mechanism 400 are used for storing energy, water in the reservoir 400 can flow through the primary heat storage mechanism 300 and the secondary heat storage mechanism 400 at the same time and enter the water supply pipeline 500, namely, the water in the reservoir 400 is heated by the solar heat collector 100 and then is directly supplied to a user, the water in the process can be controlled by the control valve 220 on the water outlet pipeline 210 connected with the reservoir 200, it is understood that the primary heat storage mechanism 300 and the secondary heat storage mechanism 400 are connected with the same water outlet pipeline 210, and the water is controlled by the control valve 220 to flow through the primary heat storage mechanism 300 or the secondary heat storage mechanism 400 or simultaneously flow through the water supply pipeline; or the primary heat storage mechanism 300 and the secondary heat storage mechanism 400 are respectively connected with one water outlet pipeline 210 and are respectively provided with a switch valve, in the energy storage process, hot water is controlled to only pass through the primary heat storage mechanism 300, step heat exchange is realized, and after the energy storage is finished, the hot water is controlled to flow through the primary heat storage mechanism 300 or the secondary heat storage mechanism 400 or simultaneously.
In overcast and rainy weather, the solar heat collector 100 can not heat the water temperature in the reservoir 200 to a sufficient temperature, at this time, the control valve on the water supply pipeline 500 is opened, so that the primary heat storage mechanism 300 can be communicated for hot water supply, the secondary heat storage mechanism 400 can be communicated for hot water supply, and the primary heat storage mechanism 300 and the secondary heat storage mechanism 400 can be communicated for hot water supply at the same time, so that larger hot water requirements are met, meanwhile, the solar heat collector can be combined with the above process in a high-efficiency manner, the water requirements of different users can be met, the energy loss can be reduced, and the energy utilization rate can be improved.
According to some embodiments of the present utility model, the first heat exchanger 310 and the second heat exchanger 410 are both provided with a solid-liquid mixture 600 that can be desorbed and adsorbed, and the solid-liquid mixture 600 stores heat during desorption and releases heat during adsorption.
Further, the solid adsorbate in the solid-liquid mixture 600 in the first heat exchanger 310 is provided as zeolite, aluminum phosphate or metal organic framework material, the liquid is provided as water, and the desorption temperature of the solid-liquid mixture and water is between 80 ℃ and 95 ℃.
Further, the solid adsorbate in the solid-liquid mixture 600 in the second heat exchanger 410 is provided as activated carbon fibers, silica gel or covalent organic framework material, the liquid is provided as ethanol, and the desorption temperature of the solid-liquid mixture and water is between 60 ℃ and 75 ℃.
It can be understood that the solid-liquid mixture 600 in the first heat exchanger 310 and the second heat exchanger 410 absorbs heat through desorption, absorbs and releases heat to exchange heat with water flowing through, and the solid-liquid mixture can undergo reversible adsorption reaction, i.e. desorption reaction.
In the present embodiment, the solid-liquid mixture 300 is described above, but the method is not limited to the solid-liquid mixture 300 in the present embodiment, and the heat exchange method in the present embodiment is desorption adsorption reaction, or may be phase change heat storage, chemical reaction heat storage, or the like, and is not limited to the method described in the present embodiment.
In the above embodiment, the first heat exchanger 310 and the second heat exchanger 410 are both provided with the throttle valve 340, the throttle valve 340 is used for controlling the contact or separation of the solid-liquid mixture 600, in the heat storage process, the hot water flows through the first flow pipe 320, the heat is conducted to the first heat exchanger 310, the solid-liquid mixture 600 therein starts to be desorbed, the solid is sunk, the liquid is above, and the water vapor enters the circulation pipeline 330 upwards, and after the desorption is completed, the solid is separated from the water through the throttle valve 340, so that the accumulation and storage of the heat are realized; when hot water is needed, the throttle valve 340 is opened to enable the solid to be in contact with the water to generate adsorption, and at the moment, the heat is released to heat the water; the operation of the throttle valve 340 in the second heat exchanger 410 is the same, and will not be described again.
Further, the water reservoir 200 is communicated with a water outlet pipeline 210, the primary heat storage mechanism 300 and the secondary heat storage mechanism 400 are both communicated with the water outlet pipeline 210, and the water outlet pipeline 210 is provided with a control valve 220.
Further, the water supply line 500 is provided with a control valve 220.
Further, the reservoir 200 is connected to two water outlet pipes 210, and the primary heat storage mechanism 300 and the secondary heat storage mechanism 400 are respectively connected to one water outlet pipe 210, and the control valve 220 is disposed on the water outlet pipe 210.
In this embodiment, the heat storage energy density of the first heat exchanger 310 and the second heat exchanger 410 is approximately 1600KJ/Kg and 1300KJ/Kg, the energy efficiency ratio is about 2.1-3.0, and it is expected to collect 1J of solar energy, and with the combination of 1.1-2.0J of environmental energy, 2.1-3.0J of hot water can be supplied. That is, when the first heat exchanger 310 and the second heat exchanger 410 contain about 100Kg of the solid-liquid mixture 600, the energy collected by the solar collector 100 corresponding to 3 to 5 days can be stored, and the device can be used for about 6 to 15 days for energy storage for about 1 to 3 months longer than that of a common solar water heater.
It should be noted that, the solid-liquid mixture 600 is in a solid-liquid separation state during the desorption process, that is, the solid is sunk, the liquid is above and isolated by the throttle valve 340, the liquid is absorbed by the solid during the adsorption process, and the solid-liquid mixture is in a wet solid or a solid-liquid mixture with only a small amount of liquid.
It is noted that terms like "one embodiment," "some embodiments," "base embodiments," "extended embodiments," and the like may be used throughout this specification to describe several embodiments of the utility model, as a particular feature, structure, material, or characteristic of the several embodiments may be combined without departing from the principles and spirit of the present utility model.
While there has been shown and described what is considered to be certain embodiments of the present utility model, it is to be understood that the utility model is not limited to the above-described embodiments, but is to be accorded the widest scope consistent with the principles and novel features of the present utility model.
Claims (8)
1. A solar thermal storage cascade utilization device, comprising:
the solar heat collector is connected with the reservoir;
the primary heat storage mechanism is communicated with the reservoir and is used for exchanging heat of water flowing out of the reservoir;
the secondary heat storage mechanism is communicated with the reservoir, a circulating pipeline is arranged on the primary heat storage mechanism, the circulating pipeline penetrates through the secondary heat storage mechanism, and the secondary heat storage mechanism can absorb heat from the circulating pipeline and can be used for exchanging heat of water flowing out of the reservoir;
and the water supply pipeline is communicated with the primary heat storage mechanism and the secondary heat storage mechanism.
2. The solar heat storage cascade utilization device according to claim 1, wherein the primary heat storage mechanism comprises a first heat exchanger and a first flow pipe, the circulation pipe is arranged on the first heat exchanger, the first flow pipe is respectively communicated with the reservoir and the water supply pipe, and the first heat exchanger is used for exchanging heat of water flowing through the first flow pipe.
3. The solar heat storage cascade utilization device according to claim 2, wherein the secondary heat storage mechanism comprises a second heat exchanger and a second flow pipe, the second flow pipe is respectively communicated with the reservoir and the water supply pipe, and the second heat exchanger is used for exchanging heat of water flowing through the second flow pipe.
4. The solar heat storage cascade utilization device according to claim 3, wherein a solid-liquid mixture capable of being desorbed and adsorbed is arranged in each of the first heat exchanger and the second heat exchanger, and the solid-liquid mixture stores heat in a desorption process and releases heat in an adsorption process.
5. The solar heat storage cascade utilization device according to claim 4, wherein a throttle valve is arranged in each of the first heat exchanger and the second heat exchanger, and the throttle valve is used for controlling contact or separation of the solid-liquid mixture.
6. A solar thermal storage cascade utilization device according to any of claims 1-5 and wherein the reservoir is in communication with a water outlet conduit, the primary thermal storage mechanism and the secondary thermal storage mechanism both being in communication with the water outlet conduit, the water outlet conduit being provided with a control valve.
7. The solar heat storage cascade utilization device of claim 6, wherein the control valve is disposed on the water supply line.
8. A solar heat storage cascade utilization device according to any of claims 1-5 and wherein the reservoir is connected to two water outlet lines, the primary heat storage mechanism and the secondary heat storage mechanism are each connected to one of the water outlet lines, and the water outlet lines are provided with control valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321166825.1U CN220489433U (en) | 2023-05-16 | 2023-05-16 | Solar heat storage cascade utilization device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321166825.1U CN220489433U (en) | 2023-05-16 | 2023-05-16 | Solar heat storage cascade utilization device |
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| Publication Number | Publication Date |
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| CN220489433U true CN220489433U (en) | 2024-02-13 |
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| CN202321166825.1U Active CN220489433U (en) | 2023-05-16 | 2023-05-16 | Solar heat storage cascade utilization device |
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| Country | Link |
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| CN (1) | CN220489433U (en) |
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2023
- 2023-05-16 CN CN202321166825.1U patent/CN220489433U/en active Active
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