Adjustable water intake structure's pair well aquifer energy storage system and its regulation and control method

Abstract

The application relates to an adjustable well-aquifer energy storage system of a water intake structure and a regulation method thereof, and the system comprises a cold well (1), a cold pumping water pipe (2), a hot well (3) and a hot pumping water pipe (4). The cold pumping water pipe (2) and the hot pumping water pipe (4) are both provided with an open hole area (5) for water permeation. The cold pumping water pipe (2) can slide up and down in the cold well (1), and the hot pumping water pipe (4) can slide up and down in the hot well (3). The cold well (1) and the hot well (3) are respectively provided with a water-impermeable area (6) in the sliding range of the cold pumping water pipe (2) and the hot pumping water pipe (4). Compared with the prior art, the aquifer energy storage system can effectively adjust the underground temperature distribution under the scene of unbalanced cold and heat loads, improves the energy storage effect of the aquifer energy storage system, and avoids the waste of cold or heat.

Description

Technical Field

[0001] This invention relates to the field of geothermal energy utilization technology, and in particular to a well-type aquifer energy storage system with an adjustable intake structure and its control method. Background Technology

[0002] Aquifer Thermal Energy Storage (ATES, also known as Underground Thermal Energy Storage) is a rapidly emerging new method for energy development and utilization in recent years. Aquifer thermal energy storage utilizes the pores, fissures, and karst caves in underground rock formations, as well as the slow flow velocity and small temperature variations of groundwater within aquifers. Cold or hot water is injected into the aquifer using a well recharge method. The injected cold or hot water, due to its own pressure (head difference), displaces the original groundwater, thus storing heat or cold energy in the aquifer surrounding the well. This stored heat or cold energy is then extracted when needed. For groundwater source heat pumps, this manifests as excessive aquifer temperature deviation, which affects the system's pumping temperature and thus adversely impacts system operation. Seasonal aquifer thermal energy storage technology, operating on an annual basis, can minimize the extraction of aquifer energy. It treats the aquifer merely as an energy storage medium, rather than directly utilizing its inherent low-grade energy.

[0003] Existing aquifer energy storage systems typically have intakes that are complete circles, with heat or cold energy uniformly stored within a circle centered on the water pipe. When the storage capacity is large, as the underground thermal radius expands, thermal penetration may occur, causing the stored heat and cold energy to cancel each other out, thus reducing energy storage efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable intake structure for aquifer energy storage system and its control method, thereby reducing underground thermal penetration and improving the energy storage capacity of the aquifer energy storage system.

[0005] The objective of this invention can be achieved through the following technical solution: a well-aquifer energy storage system with an adjustable intake structure, comprising a cold well, a cold pumping and injection pipe, a hot well, and a hot pumping and injection pipe;

[0006] Both the cold-pump irrigation pipe and the hot-pump irrigation pipe have openings at their lower ends for water permeability. The cold-pump irrigation pipe can slide up and down inside the cold well, and the hot-pump irrigation pipe can slide up and down inside the hot well.

[0007] The cold well and the hot well each have impermeable areas within the sliding range of the cold pumping pipe and the hot pumping pipe, respectively.

[0008] Preferably, the pumping water pipe is connected to a heat exchanger for heat exchange, and the heat exchanger is connected to a heat pump unit or building terminal through a pipeline to transfer cold and heat energy.

[0009] Preferably, the cold well has impermeable areas on both the side near the hot well and the side away from the hot well;

[0010] The impermeable area away from the hot well is located at the lower end of the cold well, while the impermeable area closer to the hot well is located in the middle of the cold well.

[0011] More preferably, the vertical distance between the impermeable areas on both sides of the cold well is equal to the vertical length of the opening area of ​​the cold pumping water pipe.

[0012] Preferably, the hot well has impermeable areas on both the side near the cold well and the side away from the cold well;

[0013] The impermeable area near the cold well is located at the lower end of the hot well, while the impermeable area away from the cold well is located in the middle of the hot well.

[0014] More preferably, the vertical distance between the impermeable areas on both sides of the hot well is equal to the vertical length of the opening area of ​​the hot water extraction pipe.

[0015] Preferably, the cold pumping irrigation pipe and the hot pumping irrigation pipe are equipped with limiters.

[0016] Preferably, the vertical length of the impermeable area is not less than the vertical length of the opening area.

[0017] Preferably, the ends of the cold pumping irrigation pipe and the hot pumping irrigation pipe are provided with heat insulation sections.

[0018] More preferably, the insulation section is an insulation material layer wrapped around the end walls of the cold pumping water pipe and the hot pumping water pipe.

[0019] More preferably, the insulation material layer is made of nano-silica microparticles and glass fiber felt.

[0020] A method for regulating a well-aquifer energy storage system with an adjustable intake structure, wherein the intake structure is adjusted by sliding the cold pumping injection pipe and the hot pumping injection pipe up and down within the sliding adjustment range of the cold well and the hot well.

[0021] Preferably, the impermeable area in the middle of the cold well or hot well is located in the upper section of the sliding adjustment range, and the impermeable area at the lower end of the cold well or hot well is located in the lower section of the sliding adjustment range.

[0022] Preferably, when the aquifer energy storage system is in operation and the load demand is low, the cold pumping irrigation pipe and the hot pumping irrigation pipe are controlled to be located in the middle of the sliding adjustment range. At this time, the open area of ​​the cold pumping irrigation pipe does not overlap with the impermeable area of ​​the cold well, and the complete open area serves as the water intake. Similarly, the open area of ​​the hot pumping irrigation pipe does not overlap with the impermeable area of ​​the hot well, and the complete open area serves as the water intake.

[0023] Preferably, when the aquifer energy storage system is in operation and the heat load demand is large, the hot pumping water pipe is controlled to be located in the lower section of the sliding adjustment range under summer conditions. At this time, the area where the opening area of ​​the hot pumping water pipe overlaps with the impermeable area of ​​the hot well is partly close to the cold well side, and the remaining part close to the cold well side and the part far away from the cold well side serve as the water intake.

[0024] Preferably, when the aquifer energy storage system is in operation and the cooling load demand is large, the cold pumping water pipe is controlled to be located in the upper part of the sliding adjustment range under winter conditions. At this time, the area where the opening area of ​​the cold pumping water pipe overlaps with the impermeable area of ​​the cold well is partly close to the hot well side, and the remaining part close to the hot well side and the part far away from the hot well side serve as water intakes.

[0025] Preferably, when the aquifer energy storage system is in operation and the heat load demand is much greater than the cold load demand, the hot pumping irrigation pipe is controlled to be located in the lower section of the sliding adjustment range under summer conditions. At this time, the area where the opening area of ​​the hot pumping irrigation pipe coincides with the watertight area of ​​the hot well is the part closer to the cold well, and the part farther away from the cold well serves as the water intake.

[0026] Preferably, when the aquifer energy storage system is in operation and the cooling load demand is much greater than the heating load demand, the cold pumping irrigation pipe is controlled to be located in the upper section of the sliding adjustment range under summer conditions. At this time, the area where the opening of the cold pumping irrigation pipe coincides with the impermeable area of ​​the cold well is the part closer to the hot well, and the part farther away from the hot well serves as the water intake.

[0027] In this invention, the adjustable water intake structure refers to the ability to better utilize underground space for storing heat and cold by changing the permeability ratio of different directions of the water intake, preventing thermal penetration, and improving the energy storage efficiency of the underground aquifer energy storage system. Compared to the non-adjustable water intake structure on the outside of the pumping and irrigation pipe, which also reduces thermal penetration, its advantage lies in its ability to flexibly adjust the water intake structure according to the specific load conditions when there is an imbalance between hot and cold loads. This reduces thermal penetration while minimizing disturbance to the underground temperature field, resulting in a more stable pumping temperature, reducing underground energy loss, and is simple in principle, convenient to use, and flexible in application. By adjusting the water intake structure through the sliding of the pumping and irrigation pipe, underground thermal penetration can be reduced while better controlling the underground temperature field.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. This invention can solve the problem of utilizing underground space in aquifer energy storage systems, reduce the occurrence of underground thermal penetration, and improve the energy storage capacity of aquifer energy storage systems.

[0030] 2. In the pumping well (cold and hot well) of the present invention, the pumping pipe can slide up and down within the range of the limiter. The open area of ​​the pumping pipe and the impermeable area of ​​the pumping well together form an adjustable water intake, thereby making full use of underground space for energy storage and improving the energy storage effect of the aquifer.

[0031] 3. This invention can adjust the water intake of the pumping and irrigation pipe according to the specific load, thereby reducing heat penetration and ensuring the stability of the underground temperature field as much as possible, which further improves the energy storage capacity of the underground aquifer.

[0032] 4. This invention meets the energy storage requirements of aquifer energy storage systems within aquifers and improves the energy storage effect of such systems. By rationally adjusting the underground temperature field according to the load, it avoids energy reduction caused by underground thermal penetration, thereby improving aquifer energy storage efficiency and achieving high-efficiency energy storage.

[0033] 5. The aquifer energy storage system of the present invention can effectively regulate the underground temperature field, improve the energy storage effect of the aquifer energy storage system, and avoid the waste of cold or heat.

[0034] 6. The present invention lays nanoporous thermal insulation material on the end wall of the pumping and irrigation pipe, which further reduces the heat exchange loss between the outlet fluid and the inlet fluid and improves the energy storage efficiency of the aquifer energy storage system. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of the well-aquifer energy storage system with adjustable intake structure according to the present invention;

[0036] Figure 2 Here are detailed diagrams of the control method of the present invention;

[0037] Figure 3 This is a diagram of the underground aquifer energy storage model of the present invention;

[0038] Figure 4 The cloud map of the middle part of the aquifer of the aquifer system with double-sided water intake (a) and single-sided water intake (b) when the aquifer energy storage system operates at T / 3, 2T / 3 and T during the winter (SW) operating cycle T of the present invention;

[0039] In the diagram: 1-Cold well, 2-Cold pumping irrigation pipe, 3-Hot well, 4-Hot pumping irrigation pipe, 5-Opening area, 6-Imperible area, 7-Limiter, 8-Filter medium, 9-Insulation section, 10-Aquifer, 11-Waterproof layer, 12-Pipe wall. Detailed Implementation

[0040] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0041] Example 1

[0042] An adjustable intake structure for a well-type aquifer energy storage system includes a cold well 1 and a cold pumping and injection pipe 2 installed on the cold well 1, a hot well 3 and a hot pumping and injection pipe 4 installed on the hot well 3.

[0043] Both the cold-extraction irrigation pipe 2 and the hot-extraction irrigation pipe 4 have openings 5 ​​at their lower ends to allow water to flow into the cold well 1 and the hot well 3, respectively. The cold-extraction irrigation pipe 2 and the hot-extraction irrigation pipe 4 can slide up and down within the cold well 1 and the hot well 3, respectively. The cold well 1 and the hot well 3 each have impermeable areas 6 within the sliding range of the cold-extraction irrigation pipe 2 and the hot-extraction irrigation pipe 4, respectively.

[0044] The cold pumping irrigation pipe 2 and the hot pumping irrigation pipe 4 can slide up and down with the cold well 1 and the hot well 3 to adjust the water intake structure.

[0045] Example 2

[0046] An adjustable intake structure for aquifer energy storage system comprises two wells, a cold well 1, and a hot well 3. Both the cold well 1 and the hot well 3 have impermeable regions 6 on the side closest to and furthest from the hot well 3. The impermeable region 6 furthest from the hot well 3 is located at the lower end of the cold well 1, while the impermeable region 6 closest to the hot well 3 is located in the middle of the cold well 1. The vertical distance between the top of the impermeable region 6 at the lower end of the cold well 1 and the bottom of the impermeable region 6 in the middle of the cold well 1 is equal to the vertical length of the opening area 5 of the cold pumping irrigation pipe 2. Similarly, the hot well 3 also has impermeable regions 6 on both the side closest to and furthest from the cold well 1. The impermeable region 6 near the cold well 1 is located at the lower end of the hot well 3, while the impermeable region 6 furthest from the cold well 1 is located in the middle of the hot well 3. The vertical distance between the top of the impermeable region 6 at the lower end of the hot well 3 and the bottom of the impermeable region 6 in the middle of the hot well 3 is equal to the vertical length of the opening area 5 of the hot pumping irrigation pipe 4. The vertical length of the impermeable area 6 on one side is not less than the vertical length of the opening area 5. The rest is the same as in Example 1.

[0047] Example 3

[0048] An adjustable intake structure aquifer energy storage system consists of pumping and injection pipes, hot and cold wells, and an aquifer. The pumping and injection pipes are connected to a water pump, and an insulation layer is installed at the end of the pumping and injection pipes. The pumping and injection pipes are connected to a heat exchanger for heat exchange, and the heat exchanger is connected to a heat pump unit or building terminal through pipelines to transfer hot and cold energy.

[0049] The pumping and irrigation pipe has an open area, while the hot and cold wells have impermeable areas. The pumping and irrigation pipe and the hot and cold wells can move relative to each other. By changing the relative positions of the pumping and irrigation pipe and the hot and cold wells, the flow rate ratio on both sides of the water intake of the pumping and irrigation pipe can be adjusted, better adapting to application scenarios with unbalanced hot and cold loads and improving the energy storage effect of the aquifer. This aquifer energy storage system can effectively adjust the underground temperature distribution under scenarios of unbalanced hot and cold loads, improving the energy storage effect of the aquifer energy storage system and avoiding the waste of cold or heat.

[0050] Example 4

[0051] An adjustable intake structure for well-aquifer energy storage, such as Figure 1 As shown, the system includes a cold well 1, a cold pumping and irrigation pipe 2, a hot well 3, and a hot pumping and irrigation pipe 4. The cold well 1 is connected to the cold pumping and irrigation pipe 2, and the hot well 3 is connected to the hot pumping and irrigation pipe 4. Water is permeated to the cold and hot wells through an opening area 5 at the lower end of the pumping and irrigation pipes. The cold and hot wells are surrounded by multiple layers of filter media 8 to prevent sand and soil from the aquifer 10 from entering the wells. An impermeable layer 11 is located above the aquifer 10.

[0052] The hot and cold wells are equipped with impermeable areas 6 in different sections, corresponding to the opening area 5 of the pumping and irrigation pipe. Water is permeated between the pumping and irrigation pipe and the hot and cold wells through the opening area outside the impermeable area. Water is permeated between the hot and cold wells and the aquifer 10 through the filter medium 8.

[0053] The energy storage system in this embodiment can effectively regulate the underground temperature field, improve the energy storage effect of the aquifer energy storage system, and avoid the waste of cold or heat.

[0054] The pumping and irrigation pipe can slide up and down within the cold and hot wells to adjust the water intake. An insulation layer is installed at the end of the pumping and irrigation pipe. The cold pumping and irrigation pipe 2 and the hot pumping and irrigation pipe 4 in cold well 1 and hot well 3 can slide up and down within the range of the limiter 7.

[0055] The perforated area 5 of the irrigation pipe and the impermeable area 6 of the irrigation well together form an adjustable water intake. The hot and cold well structure has different impermeable areas within the sliding range of the irrigation pipe. When the irrigation pipe slides to the top, only the left side is permeable; when it slides to the bottom, only the right side is permeable; and in the middle section, both sides are permeable.

[0056] At the end of the pumping and irrigation pipe of the aquifer energy storage system, an insulation section 9 is set. The insulation section 9 is a layer of insulation material wrapped around the outside of the vertical buried pipe wall 12.

[0057] The insulation material layer is made of nano-silica microparticles and glass fiber felt.

[0058] Cold extraction water pipe 2 and hot extraction water pipe 4 are connected to a heat exchanger for heat exchange. The heat exchanger is connected to a heat pump unit or building terminal through pipelines to transfer cold and heat energy.

[0059] In this embodiment, cold well 1 and hot well 3 need to be inserted into the underground aquifer for operation. After the cold well 1 and hot well 3 are drilled, an insulation material layer is added to the outer wall of the pumping pipe. After the wells are lowered, suitable backfill material is backfilled between the well wall and the borehole.

[0060] The positions of the water intakes of the cold pumping irrigation pipe 2 and the hot pumping irrigation pipe 4 are adjusted by the relative positions of the opening area 5 of the pumping irrigation pipe and the impermeable areas 6 of the cold well 1 and the hot well 3. The relative positions of the pumping irrigation pipe and the cold well 1 and the hot well 3 are designed according to the building's required cooling and heating loads.

[0061] When the aquifer energy storage system is operating and the load demand is low, the cold pumping irrigation pipe 2 and the hot pumping irrigation pipe 4 are controlled to be located in the middle of the sliding adjustment range. At this time, the open area 5 of the pumping irrigation pipe and the impermeable area 6 of the pumping irrigation well do not overlap. The complete open area serves as the water intake. Figure 2 (a).

[0062] When the aquifer energy storage system is operating and the heat load demand is high, the hot pumping and injection pipe 4 is controlled to be located in the lower section of the sliding adjustment range under summer conditions. At this time, the area where the opening area 5 of the pumping and injection pipe overlaps with the impermeable area 6 of the pumping and injection well is partly the left side. The remaining left and right sides serve as water intakes. The ratio of the two sides of the water intake can be adjusted without thermal penetration to obtain the best aquifer energy storage effect. Figure 2 (b)

[0063] When the aquifer energy storage system is operating and the cooling load demand is high, the cold pumping and injection pipe 2 is controlled to be located in the upper part of the sliding adjustment range under winter conditions. At this time, the area where the opening area 5 of the pumping and injection pipe overlaps with the impermeable area 6 of the pumping and injection well is partly the right side. The remaining right side and left side serve as the water intake. The ratio of the two sides of the water intake can be adjusted without thermal penetration to obtain the best aquifer energy storage effect. Figure 2 (c)

[0064] When the aquifer energy storage system is operating and the heat load demand is much greater than the cooling load demand, the hot pumping and injection pipe 4 is controlled to be located in the lower section of the sliding adjustment range under summer conditions. At this time, the area where the opening region 5 of the pumping and injection pipe overlaps with the impermeable region 6 of the pumping and injection well is the left side, and the right side serves as the water intake. Figure 2 (d)

[0065] When the aquifer energy storage system is operating and the cooling load demand is much greater than the heating load demand, the cold pumping and injection pipe 2 is controlled to be located in the upper section of the sliding adjustment range under summer conditions. At this time, the area where the opening region 5 of the pumping and injection pipe overlaps with the impermeable region 6 of the pumping and injection well is the right side, and the left side serves as the water intake. Figure 2 (e).

[0066] To further illustrate this invention, the following detailed description of an adjustable intake structure aquifer energy storage system and its control method, using CFD examples, is provided by this invention. However, this should not be construed as limiting the scope of protection of this invention. To verify the optimization of the aquifer energy storage system's energy storage efficiency by adjusting the intake, a corresponding underground aquifer energy storage model was established based on an aquifer energy storage experimental platform, as follows: Figure 3 A continuous summer-winter-summer-winter (S-SW-SWS-SWSW) simulation was conducted to analyze the energy storage effect of single-sided and double-sided outlets. The initial ground temperature was set to 15℃, the reinjection temperature for summer heat release was set to 22℃, the reinjection temperature for winter heat extraction was set to 8℃, and the infiltration boundary makeup water temperature was set to 15℃.

[0067] The cloud map of the aquifer center of the aquifer system with a winter operating condition (SW) and an operating cycle T is shown below when the system reaches T / 3, 2T / 3, and T. The cloud map is shown below for the aquifer center of the system with two intakes (a) and one intake (b). Figure 4 As shown, under the same operating time, the aquifer energy storage system with a single-sided intake structure retains more heat around the thermal well during the summer, and its energy loss is less than that of the aquifer energy storage system with a double-sided intake structure.

[0068] The calculated energy storage-related evaluation indicators are shown in Table 1. It can be seen that for the four operating conditions, the total extracted energy, storage capacity, and energy storage efficiency of the single-sided well casing are higher than those of the ordinary double-sided well casing structure. Under the four operating conditions, the extracted energy of the single-sided well casing structure is 9.8%, 12.6%, 13.9%, and 13.0% higher than that of the ordinary well casing structure, respectively. In the three operating conditions where energy storage has been achieved, the energy storage efficiency of the single-sided well casing structure is 17.6%, 19.6%, and 17.9% higher than that of the ordinary well casing model, respectively. Therefore, the single-sided intake structure significantly improves the energy storage capacity and energy storage efficiency of the aquifer energy storage system, effectively improving the energy storage effect of the aquifer.

[0069] Table 1 Comparison of Single / Double-Sided Water Intake Structures

[0070]

[0071] In this invention, it should be noted that the terms "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0072] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A well-type aquifer energy storage system with an adjustable intake structure, characterized in that, Includes cold well (1), cold pumping irrigation pipe (2), hot well (3), hot pumping irrigation pipe (4); Both the cold pumping irrigation pipe (2) and the hot pumping irrigation pipe (4) are provided with perforated areas (5) for water permeability. The cold pumping irrigation pipe (2) can slide up and down in the cold well (1), and the hot pumping irrigation pipe (4) can slide up and down in the hot well (3). The cold well (1) and the hot well (3) are respectively provided with impermeable areas (6) within the sliding range of the cold pumping water pipe (2) and the hot pumping water pipe (4); The impermeable area (6) near the hot well (3) is located in the middle of the cold well (1); The impermeable area (6) near the cold well (1) is located at the lower end of the hot well (3).

2. The well-aquifer energy storage system with adjustable intake structure according to claim 1, characterized in that, The cold well (1) has impermeable areas (6) on both the side close to the hot well (3) and the side far from the hot well (3). The impermeable area (6) on the side away from the hot well (3) is located at the lower end of the cold well (1).

3. The well-aquifer energy storage system with adjustable intake structure according to claim 2, characterized in that, The vertical distance between the impermeable areas (6) on both sides of the cold well (1) is equal to the vertical length of the opening area (5) of the cold pumping water pipe (2).

4. The well-aquifer energy storage system with adjustable intake structure according to claim 1, characterized in that, The hot well (3) has impermeable areas (6) on both the side close to the cold well (1) and the side far from the cold well (1). The impermeable area (6) on the side away from the cold well (1) is located in the middle of the hot well (3).

5. The well-aquifer energy storage system with adjustable intake structure according to claim 4, characterized in that, The vertical distance between the impermeable areas (6) on both sides of the hot well (3) is equal to the vertical length of the opening area (5) of the hot water extraction pipe (4).

6. The well-aquifer energy storage system with adjustable intake structure according to claim 1, characterized in that, Limiters (7) are provided on the cold pumping irrigation pipe (2) and the hot pumping irrigation pipe (4).

7. The well-aquifer energy storage system with adjustable intake structure according to claim 1, characterized in that, The vertical length of the impermeable area (6) is not less than the vertical length of the opening area (5).

8. A method for regulating a well-aquifer energy storage system with an adjustable intake structure as described in any one of claims 1 to 7, characterized in that, The intake structure is adjusted by sliding the cold pumping irrigation pipe (2) and the hot pumping irrigation pipe (4) up and down within the sliding adjustment range of the cold well (1) and the hot well (3).

9. The method for regulating an adjustable intake structure well-aquifer energy storage system according to claim 8, characterized in that, When the aquifer energy storage system is in operation and the load demand is small, the cold pumping irrigation pipe (2) and the hot pumping irrigation pipe (4) are controlled to be located in the middle of the sliding adjustment range. At this time, the opening area (5) of the cold pumping irrigation pipe (2) and the impermeable area (6) of the cold well (1) do not overlap. The complete opening area (5) serves as the water intake. The opening area (5) of the hot pumping irrigation pipe (4) and the impermeable area (6) of the hot well (3) do not overlap. The complete opening area (5) serves as the water intake. When the aquifer energy storage system is in operation and the heat load demand is large, the hot pumping water pipe (4) is controlled to be located in the lower section of the sliding adjustment range under summer conditions. At this time, the area where the opening area (5) of the hot pumping water pipe (4) overlaps with the impermeable area (6) of the hot well (3) is partly close to the side of the cold well (1), and the remaining part close to the side of the cold well (1) and the part far away from the cold well (1) serve as the water intake. When the aquifer energy storage system is in operation and the cooling load demand is large, the cold pumping water pipe (2) is controlled to be located in the upper part of the sliding adjustment range under winter conditions. At this time, the area where the opening area (5) of the cold pumping water pipe (2) overlaps with the impermeable area (6) of the cold well (1) is partly close to the side of the hot well (3), and the remaining part close to the side of the hot well (3) and the part far away from the hot well (3) serve as the water intake.

10. The method for regulating an adjustable intake structure well-aquifer energy storage system according to claim 8, characterized in that, When the aquifer energy storage system is in operation and the heat load demand is much greater than the cold load demand, the hot pumping water pipe (4) is controlled to be located in the lower section of the sliding adjustment range under summer conditions. At this time, the area where the opening area (5) of the hot pumping water pipe (4) overlaps with the impermeable area (6) of the hot well (3) is the part close to the cold well (1), and the part far away from the cold well (1) serves as the water intake. When the aquifer energy storage system is in operation and the cold load demand is much greater than the heat load demand, the cold pumping water pipe (2) is controlled to be located in the upper section of the sliding adjustment range under summer conditions. At this time, the area where the opening area (5) of the cold pumping water pipe (2) overlaps with the impermeable area (6) of the cold well (1) is the part close to the hot well (3), and the part far away from the hot well (3) serves as the water intake.

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