Energy storage type cooling device
By designing an energy storage cooling device, using phase change medium and heat exchange components, the storage and release of cold energy is achieved, and the problem of high power consumption of electric refrigerators in the prior art is solved, and efficient utilization of cold energy and peak-off electricity consumption is achieved.
Patent Information
- Application Number
- CN202420886013.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-04-25
AI Technical Summary
When the existing technology dissipates heat in medium and large equipment, relying on electric coolers leads to a large amount of electricity consumption and cannot cope with the national call for staggered electricity use.
An energy storage type cooling device is designed to store and release cold energy through the state changes of the phase change medium, and to use the booster cooling component and the step-down cooling component, combined with the heat exchange pipeline and the heat exchange medium to achieve efficient storage and release of cold energy.
It realizes the storage and release of cold energy, reduces power consumption, supports peak staggered electricity, helps the power grid to cut peaks and fills valleys, and improves energy utilization.
Smart Images
Figure CN222776476U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of cooling technology, and in particular to an energy storage type cooling device. Background Art
[0002] Medium and large equipment will generate a lot of heat when running for a long time. For example, when the data center cabinet is working, it will generate a lot of heat, which must be cooled down in a timely and continuous manner. Usually, the cooling of the circulating medium in the heat dissipation equipment such as air conditioners after absorbing the heat is undertaken by electric refrigerators, that is, cooling by converting electrical energy into cold energy, which consumes a lot of electricity and has high electricity costs, and cannot affect the country's call for staggered electricity consumption. Utility Model Content
[0003] In view of this, the present application is committed to providing an energy storage type cooling device, which can store cold energy and release cold energy when needed for applications such as refrigeration and cooling, allowing users to use electricity in off-peak periods, such as storing energy in valley periods and releasing energy for cooling in peak periods, saving electricity costs, helping the power grid to reduce peak loads and fill valleys, and also saving electricity.
[0004] The present application provides an energy storage type cooling device, comprising a first energy storage reservoir and a second energy storage reservoir, both for outputting, receiving or storing a phase change medium;
[0005] The outlet of the first energy storage reservoir is connected to the inlet of the second energy storage reservoir through a first pipeline, and a pressurizing cold absorption component is arranged on the first pipeline to increase the pressure of the gaseous phase change medium and make the phase change medium absorb cold energy and liquefy before flowing into the second energy storage reservoir;
[0006] The outlet of the second energy storage reservoir is connected to the inlet of the first energy storage reservoir through a second pipeline, and a pressure-reducing and cooling-releasing component is arranged on the second pipeline to make the liquid phase-change medium release cooling energy and gasify, and make the phase-change medium flow back to the first energy storage reservoir after reducing the pressure, and the pressure-reducing and cooling-releasing component at least includes a gasification refrigerator for releasing cooling energy of the phase-change medium;
[0007] A heat exchange pipeline is also provided, in which a heat exchange medium is provided. The heat exchange medium absorbs the heat of the phase change medium in the first pipeline to provide cold energy to the phase change medium, and transfers the absorbed heat to the phase change medium in the second pipeline.
[0008] In a possible implementation manner, a compressor for increasing the pressure of the phase change medium output by the first energy storage reservoir is provided on the first pipeline;
[0009] A heat storage heat exchanger connected to the first pipeline and the heat exchange pipeline is also provided, and the heat exchange medium flows into the heat storage heat exchanger and absorbs the heat of the pressurized phase change medium.
[0010] In a possible implementation, a heat releasing heat exchanger connected to the second pipeline and the heat exchange pipeline is further provided, the heat exchange medium flows into the heat releasing heat exchanger and transfers the heat absorbed from the first pipeline to the phase change medium flowing out of the gasification refrigerator.
[0011] In a possible embodiment, a first storage tank and a second storage tank are provided on the heat exchange pipeline, and the heat exchange medium in the first storage tank flows through the heat storage heat exchanger and then flows into the second storage tank, and the heat exchange medium in the second storage tank flows through the heat release heat exchanger and then flows into the first storage tank.
[0012] In a possible implementation, the pressurized cold absorption component further includes:
[0013] A condenser is connected between the heat storage heat exchanger and the second energy storage tank.
[0014] In a possible implementation manner, a refrigeration unit is further provided, and a medium in the refrigeration unit exchanges heat with a phase change medium flowing through the condenser.
[0015] In a possible implementation, the pressure reduction and refrigeration release component also includes an expander and a generator connected to the expander. The expander is located between the heat release heat exchanger and the first energy storage reservoir, and is used to expand the phase change medium flowing out of the heat release heat exchanger and drive the generator to generate electricity.
[0016] In a possible implementation manner, a condenser connected to the second energy storage reservoir is provided on the first pipeline, the condenser exchanges heat with the refrigeration unit, and the generator is connected to the refrigeration unit circuit to supply power to the refrigeration unit.
[0017] In a possible implementation, the phase change medium is carbon dioxide, and the heat exchange medium is water.
[0018] In a possible implementation, the pressure range of the second energy storage reservoir is 5 MPa-5.5 MPa; the temperature range of the first energy storage reservoir is -60°C to -50°C, and the pressure range is 0.50 MPa to 0.55 MPa.
[0019] According to the energy storage type cooling device provided by the present application, when storing energy, the gaseous phase change medium flowing out of the first energy storage reservoir is liquefied after absorbing cold energy and flows into the second energy storage reservoir for storage, so that cold energy can be stored. When energy release is required, the second energy storage reservoir is opened, and the liquid phase change medium flows out and is gasified by the gasification refrigerator to release cold energy to provide refrigeration, and the gasified phase change medium flows back to the first energy storage reservoir for storage for the next use. In this way, the energy storage type cooling device can store cold energy and release cold energy when needed for applications such as refrigeration and cooling, allowing users to use electricity in off-peak periods, such as storing energy in valley sections and releasing energy for refrigeration in peak sections, saving electricity costs, and helping the power grid to shave peaks and fill valleys. At the same time, the energy storage type cooling device provided by the present application is also provided with a heat exchange pipeline and a heat exchange medium, which recovers the heat required for cooling after the phase change medium flowing out of the first energy storage reservoir is pressurized and used to warm the phase change medium after releasing cold energy, thereby improving energy utilization and further saving the electric energy required for refrigeration. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 Shown is a schematic diagram of the composition of the energy storage type cooling device in an embodiment of the present application.
[0021] Figure 1 middle:
[0022] 1. First energy storage reservoir; 2. Compressor; 21. Electric motor; 3. Heat storage heat exchanger; 4. Condenser; 5. Second energy storage reservoir; 6. Gasification refrigerator; 7. Heat release heat exchanger; 8. Expander; 81. Generator; 9. First storage reservoir; 10. Second storage reservoir; 11. Refrigeration unit; 100. First pipeline; 200. Second pipeline; 300. Heat exchange pipeline. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0024] Please refer to the attached Figure 1 The embodiment of the present application provides an energy storage type cooling device, comprising a first energy storage reservoir 1, a second energy storage reservoir 5, a heat exchange component, a pressurized cold absorption component, and a pressure-reducing cold release component. The first energy storage reservoir 1 and the second energy storage reservoir 5 are both used to output, receive or store phase change medium. The energy storage type cooling device realizes energy storage and energy release through the state change of the phase change medium. Compared with the device in the prior art that uses only electric energy for cooling, it can save electric energy.
[0025] The outlet of the first energy storage reservoir 1 is connected to the inlet of the second energy storage reservoir 5 via a first pipeline 100 , and the outlet of the second energy storage reservoir 5 is connected to the inlet of the first energy storage reservoir 1 via a second pipeline 200 .
[0026] The pressurized cold absorption component is arranged on the first pipeline 100, and is used to increase the pressure of the phase change medium output by the first energy storage reservoir 1 and transfer the heat of the pressurized phase change medium to the heat exchange medium in the heat exchange pipeline 300 to reduce the temperature of the phase change medium, and finally make the phase change medium absorb cold energy and flow into the second energy storage reservoir 5 in a high-pressure liquid state.
[0027] The pressure-reducing and cooling-releasing component is arranged on the second pipeline 200, and at least includes a gasification refrigerator 6, which is used to exchange heat with the outside world and release the cold energy of the phase-change medium output by the second energy storage reservoir 5, thereby providing cold energy to the outside world for applications such as refrigeration, cooling and heat dissipation. The pressure-reducing and cooling-releasing component is also used to reduce the pressure of the gaseous phase-change medium, output energy to the outside world, such as for power generation, and also allows the phase-change medium to be stored in the first energy storage reservoir 1 in a low-pressure state.
[0028] The phase change medium may include or may be carbon dioxide. The triple point temperature of carbon dioxide is about -56.6°C, and the triple point pressure is about 0.52MPa. Therefore, the temperature range of the first energy storage reservoir 1 may be -60°C to -50°C, and the pressure range may be 0.50MPa to 0.55MPa. In the original state, or in the storage state, the phase change medium such as carbon dioxide is stored in the first energy storage reservoir 1 in a low-temperature and low-pressure liquid state. When storing cold energy through carbon dioxide, the first energy storage reservoir 1 is opened, a part of the liquid carbon dioxide in the reservoir is gasified, and the remaining part of the liquid carbon dioxide becomes solid. The gaseous carbon dioxide flows into the first pipeline 100 and is processed by the pressurized energy absorption component. For example, it can be compressed first to increase the pressure. The pressurized phase change medium transfers heat to the heat exchange medium and absorbs cold energy. It can also further cool down and condense to absorb cold energy, and finally is stored in the second energy storage reservoir 5 in a high-pressure (high pressure here refers to the pressure increase relative to the first energy storage reservoir 1, the same below) liquid state for transfer or storage. The pressure range of the second energy storage reservoir 5 can be 5MPa-5.5MPa, and the saturation temperature corresponding to this pressure range is 14°C-18°C.
[0029] When releasing energy, the second energy storage reservoir 5 is opened, and liquid carbon dioxide flows into the second pipeline 200 and is processed by the pressurization energy release component, such as first flowing into the gasification refrigerator 6, releasing cold energy to the outside and absorbing heat to be gasified, and obtaining high-pressure gaseous carbon dioxide while providing refrigeration to the outside. The high-pressure gaseous carbon dioxide absorbs heat through the heat exchange medium to increase the temperature and expand to do work to reduce the pressure, and releases energy to the outside, for example, for power generation. The low-pressure gaseous carbon dioxide after expansion and reduction in pressure and temperature returns to the first energy storage reservoir 1 and contacts with the solid carbon dioxide therein to be liquefied together (such as flowing into the first energy storage reservoir 1 at a pressure state slightly higher than the pressure in the first energy storage reservoir 1, and changing into liquid together with the solid carbon dioxide in the first energy storage reservoir 1), and is stored in the first energy storage reservoir 1 as a low-pressure liquid.
[0030] With this arrangement, the phase change medium absorbs and releases energy to store and provide cold energy. The energy storage type cooling device can store cold energy and release cold energy when needed for applications such as refrigeration and cooling, allowing users to use electricity in off-peak periods, such as storing energy in valley periods and releasing energy for refrigeration in peak periods, saving electricity costs and helping the power grid to fill valleys. At the same time, by performing pressure treatment on the phase change medium by increasing and decreasing the pressure, not only can the storage pressure of the phase change medium be reduced, the storage safety and storage simplicity can be improved, the requirements for the storage depot can be reduced, which is conducive to cost savings and ease of application, but the phase change medium can also release pressure and output energy, further saving electricity.
[0031] At the same time, the energy storage type cooling device provided by the present application is also provided with a heat exchange component, which includes a heat exchange pipeline 300 and a heat exchange medium. The heat exchange medium absorbs the heat of the phase change medium in the first pipeline 100 to provide cold energy to the pressurized phase change medium, saving the power consumption required when the phase change medium absorbs cold energy. And the heat exchange medium transfers the absorbed heat to the phase change medium in the second pipeline 200, which is used to further gasify the phase change medium or increase the temperature of the phase change medium to facilitate the decompression and expansion of the phase change medium. In this way, the energy storage type cooling device provided by the present application recovers the heat released by the phase change medium after pressurization and cooling through the heat exchange medium, and uses the heat to increase the temperature of the phase change medium after releasing the cold energy, and converts this part of the heat into other energy for utilization, such as expanding the heated phase change medium and generating electricity, and converting this part of the heat into electrical energy, thereby improving energy utilization and further saving the additional electrical energy required for the cooling of the cooling device as a whole.
[0032] The energy storage cooling device provided in the present application can be used to provide cold energy to various types of equipment such as data center cabinets, and to provide cold energy for cooling or refrigerating equipment or places.
[0033] Specifically, in some embodiments, the pressurized cold absorption component includes a compressor 2. The compressor 2 is connected to the outlet of the first energy storage reservoir 1 and is driven by the motor 21 to increase the pressure of the phase change medium output from the first energy storage reservoir 1. After the gaseous phase change medium flows from the first energy storage reservoir 1 into the compressor 2 and is pressurized, the pressure increases and the temperature also increases.
[0034] The heat exchange assembly includes a heat storage heat exchanger 3 connected to the first pipeline 100 and the heat exchange pipeline 300. The heat storage heat exchanger 3 includes a portion of the first pipeline 100 and a portion of the heat exchange pipeline 300, so that the phase change medium and the heat exchange medium can exchange heat. The phase change medium flowing out of the compressor 2 has been pressurized and heated, and the pressurized and heated phase change medium flows into the heat storage heat exchanger 3, transfers heat to the heat exchange medium in the heat exchange pipeline 300 and cools it down, or in other words, the heat exchange medium absorbs the heat of the pressurized phase change medium through the heat storage heat exchanger 3, cools the phase change medium, and recovers heat.
[0035] In some embodiments, further, the pressurized cold absorption component also includes a condenser 4, which includes a partial pipe section of the first pipeline 100 and a pipe section for flowing in the refrigerant, and the condenser 4 is connected between the heat storage heat exchanger 3 and the second energy storage reservoir 5. After the phase change medium flows from the heat storage heat exchanger 3 into the condenser 4, it exchanges heat with the refrigerant, further absorbs cold energy and condenses and liquefies, and the liquefied phase change medium flows into the second energy storage reservoir 5. In this way, after the low-pressure phase change medium flows out of the first energy storage reservoir 1, it is pressurized and cooled, and carries the cold energy and is stored in the second energy storage reservoir 5 in a high-pressure and low-temperature liquefied state.
[0036] The condenser 4 needs to cool down and condense the phase change medium. In some embodiments, the energy storage type cooling device further includes a refrigeration unit 11, which is connected to the condenser 4 to provide the refrigeration medium to the condenser 4 to efficiently cool the phase change medium.
[0037] The gasification refrigerator 6 includes a partial pipe section of the second pipeline 200, which is connected to the outlet of the second energy storage tank 5. The gasification refrigerator 6 also includes a partial pipe section for the cold absorption medium to flow in, so that the phase change medium and the cold absorption medium can exchange heat, provide cold energy to the cold absorption medium, and cool the cold absorption medium. The cold absorption medium is a medium that emits cold energy to the outside world and provides refrigeration to the outside world. In this way, the cooling of the medium or the cold energy of the medium comes from the phase change medium with cold energy through the above-mentioned treatment, rather than cooling through a large amount of electric energy, which can save electricity.
[0038] In some embodiments, the heat exchange assembly further includes a heat release heat exchanger 7 connected to the second pipeline 200 and the heat exchange pipeline 300. The heat release heat exchanger 7 includes a portion of the second pipeline 200 and a portion of the heat exchange pipeline 300, so that the phase change medium and the heat exchange medium can exchange heat.
[0039] After the high-pressure liquid phase change medium releases cold energy and is vaporized or partially vaporized in the vaporizing refrigerator 6, it flows into the heat releasing heat exchanger 7. The heat exchange medium transfers the heat absorbed from the first pipeline 100 to the phase change medium flowing out of the vaporizing refrigerator 6 through the heat releasing heat exchanger 7, so that the phase change medium absorbs the heat transferred by the heat exchange medium and increases its temperature.
[0040] In a further embodiment, an expander 8 is further provided on the second pipeline 200, and the expander 8 is connected to a generator 81. The high-temperature and high-pressure phase-change medium flowing out of the heat-releasing heat exchanger 7 flows into the expander 8. The expander 8 expands the phase-change medium, so that the pressure of the phase-change medium is converted into kinetic energy and transmitted to the generator 81, and then converted into electrical energy by the generator 81.
[0041] With such a configuration, the energy storage type cooling device provided by the present application recycles the heat generated by the pressurization of the phase change medium, and uses it to increase the temperature of the phase change medium after releasing the cold energy, so that the phase change medium expands to release the pressure and output energy, which is equivalent to utilizing the heat generated by the pressurization of the phase change medium and converting it into electrical energy. This allows the energy storage type cooling device to not only output cold energy but also generate electrical energy, which makes up for the electrical energy used when the phase change medium absorbs cold energy, and saves the overall required refrigeration electricity.
[0042] In the embodiment in which a refrigeration unit 11 and a generator 81 are provided, the generator 81 can be connected to the circuit of the refrigeration unit 11 to directly provide electrical energy to the refrigeration unit 11, so that the electrical energy generated by the energy storage type refrigeration device provided in the present application can be used for self-use, which not only saves the additional electrical energy required for the overall operation of the device, but also does not need to be connected to other electrical devices or electrical energy storage devices, thereby facilitating application.
[0043] like Figure 1 As shown, in some embodiments, a first storage bin 9 and a second storage bin 10 are provided on the heat exchange pipeline 300, and the heat exchange medium in the first storage bin 9 flows through the heat storage heat exchanger 3 and then flows into the second storage bin 10, and the heat exchange medium in the second storage bin 10 flows through the heat release heat exchanger 7 and then flows into the first storage bin 9. The first storage bin 9 can be a cold tank, the second storage bin 10 can be a hot tank, and the heat exchange medium can be water. A booster pump can be provided on the heat exchange pipeline 300 to increase the water flow pressure and flow rate to avoid heat loss. In this way, after the heat exchange component absorbs the heat generated by the pressurization of the phase change medium, it can be stored in the second storage bin 10 first. When the phase change medium releases energy, the second storage bin 10 is opened, and then the heat is transferred to the phase change medium after the cold energy is released through the heat exchange medium, so that the phase change medium expands to generate power and converts heat into electrical energy. The first storage bin 9 and the second storage bin 10 are provided, so that the heat absorption, storage and release of the heat exchange medium can be carried out synchronously with the cold energy storage and cold energy release of the phase change medium, thereby preventing heat loss and improving heat utilization.
[0044] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.
[0045] The components and devices involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the drawings. As will be appreciated by those skilled in the art, these components and devices can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, meaning "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The word "such as" used here refers to the phrase "such as but not limited to", and can be used interchangeably with it.
[0046] It should also be noted that in the device of the present application, each component can be decomposed and / or reassembled, and these decompositions and / or reassemblies should be regarded as equivalent solutions of the present application.
[0047] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.
[0048] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.
[0049] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. An energy storage cooling device, characterized in that: including a first energy storage reservoir and a second energy storage reservoir, both for outputting, receiving or storing a phase change medium; The outlet of the first energy storage reservoir is connected to the inlet of the second energy storage reservoir through a first pipeline, and a pressurizing cold absorption component is arranged on the first pipeline to increase the pressure of the gaseous phase change medium and make the phase change medium absorb cold energy and liquefy before flowing into the second energy storage reservoir; The outlet of the second energy storage reservoir is connected to the inlet of the first energy storage reservoir through a second pipeline, and a pressure-reducing and cooling-releasing component is arranged on the second pipeline to make the liquid phase-change medium release cooling energy and gasify, and make the phase-change medium flow back to the first energy storage reservoir after reducing the pressure, and the pressure-reducing and cooling-releasing component at least includes a gasification refrigerator for releasing cooling energy of the phase-change medium; A heat exchange pipeline is also provided, in which a heat exchange medium is provided. The heat exchange medium absorbs the heat of the phase change medium in the first pipeline to provide cold energy to the phase change medium, and transfers the absorbed heat to the phase change medium in the second pipeline.
2. The energy storage cooling device according to claim 1, characterized in that: The first pipeline is provided with a compressor for increasing the pressure of the phase change medium output by the first energy storage reservoir; A heat storage heat exchanger connected to the first pipeline and the heat exchange pipeline is also provided, and the heat exchange medium flows into the heat storage heat exchanger and absorbs the heat of the pressurized phase change medium.
3. The energy storage cooling device according to claim 2, characterized in that: A heat releasing heat exchanger connected to the second pipeline and the heat exchange pipeline is also provided. The heat exchange medium flows into the heat releasing heat exchanger and transfers the heat absorbed from the first pipeline to the phase change medium flowing out of the gasification refrigerator.
4. The energy storage cooling device according to claim 3, characterized in that: The heat exchange pipeline is provided with a first storage tank and a second storage tank. The heat exchange medium in the first storage tank flows through the heat storage heat exchanger and then flows into the second storage tank. The heat exchange medium in the second storage tank flows through the heat release heat exchanger and then flows into the first storage tank.
5. The energy storage cooling device according to claim 2, characterized in that: The pressurized cold absorption component also includes: A condenser is connected between the heat storage heat exchanger and the second energy storage reservoir.
6. The energy storage cooling device according to claim 5, characterized in that: A refrigeration unit is also provided, and a medium in the refrigeration unit exchanges heat with a phase change medium flowing through the condenser.
7. The energy storage cooling device according to claim 3, characterized in that: The pressure reduction and cold release component also includes an expander and a generator connected to the expander. The expander is located between the heat release heat exchanger and the first energy storage reservoir, and is used to expand the phase change medium flowing out of the heat release heat exchanger and drive the generator to generate electricity.
8. The energy storage cooling device according to claim 7, characterized in that: The first pipeline is provided with a condenser connected to the second energy storage tank, the condenser exchanges heat with the refrigeration unit, and the generator is connected to the refrigeration unit circuit to supply power to the refrigeration unit.
9. The energy storage cooling device according to claim 1, characterized in that: The phase change medium is carbon dioxide, and the heat exchange medium is water.
10. The energy storage cooling device according to claim 1, characterized in that: The pressure range of the second energy storage reservoir is 5MPa-5.5MPa; the temperature range of the first energy storage reservoir is -60℃~-50℃, and the pressure range is 0.50MPa~0.55MPa.