Hydraulic compressed air energy storage system based on jacketed heat exchanger

Abstract

The utility model discloses a hydraulic compressed air energy storage system based on jacketed heat exchangers. The hydraulic compressed air energy storage system comprises a reservoir, a water pump, a water turbine, a first jacketed heat exchanger and a second jacketed heat exchanger, the reservoir is connected with the water pump and the water turbine, the water pump is connected with a water inlet of the first jacketed heat exchanger, the water turbine is connected with a water outlet of the first jacketed heat exchanger, and a reactor in the first jacketed heat exchanger is connected with a reactor in the second jacketed heat exchanger. External jacket inlets of the first jacket type heat exchanger and the second jacket type heat exchanger are connected with a reservoir through a water pump; external jacket outlets of the first jacket type heat exchanger and the second jacket type heat exchanger are connected with the reservoir; the first jacketed heat exchanger is filled with water and air, and the second jacketed heat exchanger is filled with air; the problems that the circulation efficiency is reduced due to temperature change in the energy storage and release process and the circulation efficiency of the energy storage-power generation system is influenced by environment temperature change in four seasons are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressed air energy storage, and specifically relates to a hydraulic compressed air energy storage system based on a jacketed heat exchanger. Background Art

[0002] The volatility, randomness and uncertainty of new energy sources pose serious challenges to the safe and stable operation of the power system. The trend of the gradually widening peak-to-valley difference of the power grid has further aggravated the problem. The power system's demand for flexible regulation resources has increased significantly. The power system urgently needs advanced large-scale energy storage technology to solve the problem of renewable energy access, so as to improve the efficiency, safety and economy of conventional power systems and regional energy systems.

[0003] On the other hand, as the proportion of new energy increases, the amount of renewable energy on-grid electricity will be divided into two parts: guaranteed purchase electricity, market transaction electricity, and surplus electricity that has not been traded. Grid companies no longer need to purchase the full amount of electricity from renewable energy grid-connected power generation projects within their jurisdiction. This requires new energy power generation companies to actively find new ways to absorb and improve the utilization of surplus electricity that has not been traded. Energy storage technology, as one of the important technical measures to solve this problem, plays an important role in increasing the interests of new energy power generation companies and reducing surplus electricity that has not been traded.

[0004] Compressed air energy storage has the advantages of large capacity, long life, cleanliness, safety, reliability, and good economy. The working medium and energy storage medium of existing non-supplementary compressed air energy storage are both air, the start-stop process lasts for more than 10 minutes, and the power increase and decrease rate is slow; the working medium of hydraulic compressed air energy storage is water and the energy storage medium is air, but there are problems of temperature rise during the energy storage process, temperature drop during the energy release process, and slow drop in air temperature during the waiting process, which leads to a decrease in the system cycle efficiency in the energy storage-power generation cycle; in addition, the temperature change during the energy storage and energy release process limits the increase and decrease of the power of the water pump and turbine, seriously affecting the power regulation rate and amplitude of the energy storage system, resulting in a decrease in the cycle efficiency of the energy storage system during the entire cycle; in addition, during the long waiting process of the energy storage system, the temperature of the energy storage medium is greatly affected by the ambient temperature and water temperature. In the northern region, the temperature difference between winter and summer reaches 30 degrees to 50 degrees, which seriously affects the average cycle efficiency of the energy storage system under long-term operation. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a hydraulic compressed air energy storage system based on a jacketed heat exchanger, which overcomes the problem of large temperature fluctuations of the gas in the container of the compressed air energy storage system and the temperature fluctuation limiting the rapid change of the unit power, solves the problem that temperature changes during energy storage and release reduce the cycle efficiency, and the problem that changes in ambient temperature in four seasons affect the cycle efficiency of the energy storage-power generation system.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a hydraulic compressed air energy storage system based on a jacketed heat exchanger, comprising a water reservoir, a first water pump, a turbine, a first jacketed heat exchanger and a second jacketed heat exchanger; the water outlet and the water inlet of the water reservoir are correspondingly connected to the first water pump and the turbine, the first water pump is connected to the water inlet of the first jacketed heat exchanger, the turbine is connected to the water outlet of the first jacketed heat exchanger, the reactor in the first jacketed heat exchanger is connected to the reactor in the second jacketed heat exchanger, the external jacket inlets of the first jacketed heat exchanger and the second jacketed heat exchanger are connected to a cold source via the second water pump; the external jacket outlets of the first jacketed heat exchanger and the second jacketed heat exchanger are connected to the water reservoir; the first jacketed heat exchanger is filled with water and air, and the second jacketed heat exchanger is filled with air.

[0007] Furthermore, the cooling and heating medium introduced into the outer jackets of the first jacketed heat exchanger and the second jacketed heat exchanger is water, and the liquid medium in the reactors of the first jacketed heat exchanger and the second jacketed heat exchanger is water.

[0008] Furthermore, a liquid level gauge, a pressure sensor and a temperature sensor are provided in the first jacketed heat exchanger and the second jacketed heat exchanger.

[0009] Furthermore, the pressure of the first jacketed heat exchanger and the second jacketed heat exchanger does not exceed 50 MPa, and the gas temperature in the reactors of the first jacketed heat exchanger and the second jacketed heat exchanger does not exceed 300°C.

[0010] Furthermore, an integrated water pump / water turbine is provided to replace the first water pump and water turbine.

[0011] Furthermore, enhanced heat exchange structures are provided in the outer jackets of the first jacketed heat exchanger and the second jacketed heat exchanger.

[0012] Furthermore, an atomizing spray device is provided in the first jacketed heat exchanger, and the atomizing spray device is connected to a water inlet of the first jacketed heat exchanger or an external water source via a third water pump.

[0013] Further, the water temperature of the external water source is lower than the water temperature in the first jacketed heat exchanger.

[0014] Furthermore, a bypass pipeline is provided between the first jacketed heat exchanger and the second jacketed heat exchanger, and a valve is provided on the bypass pipeline.

[0015] Furthermore, the cold source is cold fluid in an external system or water in a water reservoir.

[0016] Compared with the prior art, the utility model has at least the following beneficial effects: the hydraulic compressed air energy storage system based on the jacketed heat exchanger proposed by the utility model uses atomization spray and jacketed heat exchange technology during the compression and expansion process to effectively maintain the stability of the air temperature during the energy storage and power generation process, significantly reducing the large fluctuations in the pressure of the energy storage container and the air temperature in the work container, thereby greatly improving the circulation efficiency of the system;

[0017] The hydraulic compressed air energy storage system based on the jacketed heat exchanger of the utility model realizes the multifunctional application of work, cooling and heat preservation by using water with high specific heat capacity as the medium, effectively maintains the temperature stability of the work medium - air in the system, and successfully overcomes the influence of the environmental temperature changes in the four seasons on the operating conditions of the energy storage system;

[0018] The hydraulic compressed air energy storage system based on the jacketed heat exchanger of the utility model adopts water as the working medium and performs energy conversion through a pump / turbine. Whether it is a high-pressure or low-pressure system, it can maintain high-efficiency operation, effectively solving the negative impact of pressure changes on the system circulation efficiency.

[0019] The hydraulic compressed air energy storage system based on the jacketed heat exchanger of the utility model uses clean and pollution-free air and water as energy storage and work medium, truly realizing a green and clean energy storage method;

[0020] The hydraulic compressed air energy storage system based on the jacketed heat exchanger of the utility model does not contain flammable and explosive substances at room temperature, which fundamentally solves the fire and explosion risks that may exist in the energy storage system and ensures the safe operation of the system;

[0021] The hydraulic compressed air energy storage system based on the jacketed heat exchanger of the utility model can not only work in coordination with the thermal power unit to realize the thermal storage frequency regulation operation, but also can efficiently undertake the high-frequency automatic power generation control and regulation tasks of the thermal power unit;

[0022] Since the hydraulic compressed air energy storage system based on the jacketed heat exchanger of the utility model adopts water as the working medium, its incompressibility makes the start and stop process of the water pump and the turbine rapid and the switching time short, thus giving the energy storage system a significant advantage of rapid switching between energy storage and power generation conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the system structure of Example 1 of the utility model.

[0024] Figure 2 This is a schematic diagram of the system structure of Example 2 of the utility model.

[0025] Figure 3 This is a schematic diagram of the system structure of Example 3 of the utility model.

[0026] Figure 4 This is a schematic diagram of the system structure of Example 4 of the utility model.

[0027] Figure 5 This is a schematic diagram of the structure of an integrated water pump / turbine system adopted in the utility model.

[0028] In the attached drawings, 1-water reservoir, 2-first water pump, 3-water turbine, 4-first jacketed heat exchanger, 5-second jacketed heat exchanger, 6-second water pump, 7-third water pump, 8-water pump / water turbine. DETAILED DESCRIPTION

[0029] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0030] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only an embodiment of a part of the utility model, not all embodiments, and is not intended to limit the scope of the disclosure of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concepts disclosed in the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the utility model.

[0031] The accompanying drawings show schematic diagrams of structures according to the disclosed embodiments of the utility model. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0032] refer to Figure 1Embodiment 1. The present application provides a hydraulic compressed air energy storage system based on a jacketed heat exchanger, comprising a water reservoir 1, a first water pump 2, a turbine 3, a first jacketed heat exchanger 4 and a second jacketed heat exchanger 5; the water reservoir 1 serves as a water source for the entire system, providing water for the first water pump 2 and the turbine 3; the water reservoir 1 is connected to the outer jackets of the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5 through a second water pump 6 and a valve, and the outer jackets of the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5 are connected to the water reservoir 1 through a pipeline; the second jacketed heat exchanger 5 The internal reactor of is connected to the internal reactor of the first jacketed heat exchanger 4 through a valve; the water reservoir 1 is connected to the first water pump 2 and the turbine 3, the first water pump 2 is connected to the water inlet of the first jacketed heat exchanger 4, the turbine 3 is connected to the water outlet of the first jacketed heat exchanger 4, the reactor in the first jacketed heat exchanger 4 is connected to the reactor in the second jacketed heat exchanger 5, the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5 are connected to the water reservoir 1 through the second water pump 6; the external jacket outlets of the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5 are connected to the water reservoir 1. Energy conversion is achieved through the first water pump 2, the turbine 3 and the second water pump 6.

[0033] In the first jacketed heat exchanger 4, water exchanges heat with the air inside, the cooled water flows out, and is driven by the turbine 3 to generate energy, and then returns to the water reservoir 1 again; at the same time, the air flows out of the first jacketed heat exchanger 4 and enters the second jacketed heat exchanger 5 for further cooling; the second water pump 6 pumps the cold source into the outer jackets of the two jacketed heat exchangers to cool the air in the jackets. The cooled water flows back to the water reservoir 1 from the outer jacket outlets of the two jacketed heat exchangers, forming a complete cycle.

[0034] The cooling and heating medium passed through the outer jackets of the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5, and the liquid medium in the reactors of the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5 are both water. There is both water and air in the first jacketed heat exchanger 4, and the second jacketed heat exchanger 5 is mainly composed of air.

[0035] During the energy storage process, the liquid level in the first jacketed heat exchanger 4 increases, the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5 are connected to each other, and the air pressure gradually increases; the second water pump 6 pumps water from the water reservoir into the outer jackets of the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5, and cools the gas temperature in the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5 through convection heat transfer.

[0036] During the power generation process, the liquid level in the first jacketed heat exchanger 4 decreases, the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5 are connected to each other, and the air pressure gradually decreases; the second water pump 6 pumps water from the water reservoir to the outer jackets of the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5, and maintains the gas temperature in the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5 through convection heat transfer.

[0037] During the energy storage process, the first water pump 2 pumps water to convert electrical energy into pressure energy of air and stores it in the gas in the reactors of the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5; during the power generation process, the gas in the reactors of the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5 expands and pushes the water in the first jacketed heat exchanger 4 to drive the turbine 3 to drive the generator to generate electricity.

[0038] As an implementable solution, the pressure of the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5 does not exceed 50 MPa, and the gas temperature in the reactors of the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5 does not exceed 300° C. According to the flow and pressure requirements of the system, more suitable water pump and turbine models are selected to improve energy efficiency and reduce energy consumption.

[0039] A bypass pipe is arranged between the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5, and a valve is arranged on the bypass pipe; the bypass pipe should be connected between the outlet of the first jacketed heat exchanger 4 and the inlet of the second jacketed heat exchanger 5 to form an optional fluid path, and the valve on the bypass pipe can be a manual regulating valve, an electric regulating valve or an automatic regulating valve, depending on the operating requirements and control accuracy of the system.

[0040] Example 2, reference Figure 2 Based on the system described in Example 1, an atomizing spray device is provided in the first jacketed heat exchanger 4, and the atomizing spray device is connected to an external water source or a water inlet of the first jacketed heat exchanger 4 through a third water pump 7; the atomizing spray device is used to cool the air during the compression process, which helps to achieve near-isothermal compression and improve the energy storage density, and the external water source can also be cold water. The atomizing spray device can atomize liquid such as cooling water into fine droplets through a nozzle or other device, thereby increasing the contact area between the liquid and the air or other heat exchange medium; the atomizing spray device should be provided inside the first jacketed heat exchanger 4 to ensure that the droplets can be evenly distributed in the entire heat exchange space, and the third water pump 7 is responsible for providing power to the atomizing spray device to ensure that the liquid can be atomized through the nozzle with sufficient pressure and flow. According to the specific needs and operating conditions of the heat exchanger, the pump speed and flow of the third water pump 7 are adjusted to achieve the best heat exchange effect. The atomizing spray device and the third water pump 7 are regularly inspected and maintained to ensure their normal operation and efficient work, and bypass pipes can be set at both ends of the third water pump 7 to facilitate maintenance.

[0041] refer to Figure 5 An integrated water pump / water turbine 8 may also be provided to replace the first water pump 2 and the water turbine 3 .

[0042] By improving the internal structure and materials of the jacketed heat exchanger, its heat exchange efficiency and service life can be improved. Optionally, an enhanced heat exchange structure is provided in the outer jacket of the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5, and the enhanced heat exchange structure adopts a heat exchange water pipe with a spoiler column provided on the outside or a heat exchange water pipe with a heat exchange fin provided on the outside. Furthermore, an enhanced heat exchange structure can also be provided on the inside of the heat exchange water pipe; appropriately increasing the length or diameter of the jacket can effectively increase the heat transfer area, thereby improving the heat transfer efficiency.

[0043] A spiral baffle can also be set in the jacket to increase the turbulence of the fluid, destroy the boundary layer, and thus improve the heat transfer coefficient, or a disturbance plate, a baffle, etc. can also be set to increase the turbulence of the fluid and improve the heat transfer efficiency. A flow distributor can be set at the inlet and outlet of the jacket to adjust the flow distribution in different areas as needed, ensure that the fluid is evenly distributed in the jacket, avoid dead zones or short circuits, and improve the heat transfer efficiency.

[0044] Jacketed heat exchangers can be made of stainless steel.

[0045] Example 3, reference Figure 3 , which is different from Example 1, the inlet of the outer jacket of the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5 is connected to the cold fluid of the external system through the second water pump 6, and the cold fluid enters the outer jacket of the second jacketed heat exchanger 5 and the first jacketed heat exchanger 4 in turn. The cold fluid enters the outer jacket of the second jacketed heat exchanger 5, exchanges heat with the air therein, and reduces the temperature of the air; then, the preheated cold fluid enters the outer jacket of the first jacketed heat exchanger 4, continues to exchange heat with the water and air therein, and completes the further cooling process. By adjusting the flow of the second water pump 6 or setting a flow control valve, the flow of the cold fluid entering the jacket can be adjusted as needed to optimize the cooling effect and the operating efficiency of the system; temperature sensors are set at the inlet and outlet of the jacket to monitor the temperature change of the cold fluid in real time, so as to monitor and adjust the operating status of the system; it is also possible to consider setting a heat recovery system to recover the heat of the preheated cold fluid flowing out of the jacket, which is used to preheat other fluids entering the system or perform other heat utilization, so as to further improve the energy efficiency of the system.

[0046] Example 4, reference Figure 4, different from Example 3, the external jacket inlet of the first jacketed heat exchanger 4 and the second jacketed heat exchanger 5 are connected to the external system cold fluid through the second water pump 6, and the cold fluid enters the external jacket of the second jacketed heat exchanger 5 and the first jacketed heat exchanger 4 at the same time. It ensures that both can be cooled in time, improving the efficiency and performance of the entire system; the flow of the second water pump 6 can be adjusted as needed to ensure that the two heat exchangers are sufficiently supplied with cold fluid. At the same time, a flow regulating valve can be set in the system according to actual conditions to further optimize the distribution of flow. A temperature monitoring device is set in the system to monitor the temperature changes of the heat exchanger in real time to ensure that it operates within a safe range; bypass pipes can be set at both ends of the second water pump 6 for easy maintenance, and regular cleaning of the inside and outside of the jacketed heat exchanger to prevent dirt and impurities from affecting the heat exchange effect. At the same time, the second water pump 6 is subjected to necessary maintenance and care to ensure its stable performance.

[0047] The cold source is the cold fluid of the external system or the water in the water reservoir 1. It is also possible to consider mixing the cold fluid of the external system and the water in the water reservoir 1 to adjust the temperature and flow of the cold fluid to meet the needs under different process conditions. According to the needs of the heat exchanger and the supply capacity of the external system, it may be necessary to install flow meters, pressure gauges and other instruments to monitor and adjust the flow and pressure of the cold fluid to ensure the efficient operation of the heat exchanger. The water temperature in the water reservoir 1 may be affected by factors such as season, environment, and water tank design, and a circulating cooling system is needed to keep the water temperature stable.

[0048] In summary, the utility model provides a hydraulic compressed air energy storage system based on a jacketed heat exchanger, which utilizes the compression and expansion of air to achieve energy storage and power generation, without relying on terrain differences, and therefore has extremely high layout flexibility; in the compression and expansion process, atomization spraying and jacketed heat exchange technology are creatively introduced to ensure that the air temperature remains stable during energy storage and power generation, significantly reducing the pressure of the energy storage container and the temperature fluctuation of the air in the work container, thereby greatly improving the circulation efficiency of the system; in order to maintain the stability of the air temperature in the system, water with a large specific heat capacity is used as a medium for work, cooling and heat preservation. It effectively overcomes the impact of the energy storage system on the change of ambient temperature in the four seasons; the hydraulic compressed air energy storage system based on the jacketed heat exchanger uses water as the working medium and cooperates with the pump / turbine for energy conversion. It can achieve efficient operation in both high-pressure and low-pressure systems, effectively solving the impact of pressure changes on the system circulation efficiency. Since the energy storage medium is air and the working medium is water, both media are clean and pollution-free materials. This application successfully realizes a green and clean energy storage method; there are no flammable and explosive substances at room temperature, which fundamentally eliminates the possible fire and explosion risks of the energy storage system, greatly improving the safety of the system. In addition to being able to cooperate with thermal power units for frequency modulation operation, the scheme described in this application can also be competent for high-frequency automatic power generation control and regulation of thermal power units; because the working medium water is incompressible, the water pump and turbine in this utility model show extremely fast response speed and extremely short switching time during the start-up and stop process, so that the energy storage system can quickly switch between energy storage and power generation conditions.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A hydraulic compressed air energy storage system based on a jacketed heat exchanger, characterized in that: The invention comprises a water reservoir (1), a first water pump (2), a turbine (3), a first jacketed heat exchanger (4) and a second jacketed heat exchanger (5); the water outlet of the water reservoir (1) is connected to the first water pump (2), the water inlet of the water reservoir (1) is connected to the turbine (3), the first water pump (2) is connected to the water inlet of the first jacketed heat exchanger (4), the turbine (3) is connected to the water outlet of the first jacketed heat exchanger (4), the reactor in the first jacketed heat exchanger (4) is connected to the reactor in the second jacketed heat exchanger (5), the external jacket inlets of the first jacketed heat exchanger (4) and the second jacketed heat exchanger (5) are connected to a cold source via a second water pump (6); the external jacket outlets of the first jacketed heat exchanger (4) and the second jacketed heat exchanger (5) are connected to the water reservoir (1); the first jacketed heat exchanger is filled with water and air, and the second jacketed heat exchanger (5) is filled with air.

2. A hydraulic compressed air energy storage system based on a jacketed heat exchanger according to claim 1, characterized in that: The cooling and heating medium introduced into the outer jackets of the first jacketed heat exchanger (4) and the second jacketed heat exchanger (5) is water, and the liquid medium in the reactors of the first jacketed heat exchanger (4) and the second jacketed heat exchanger (5) is water.

3. The hydraulic compressed air energy storage system based on a jacketed heat exchanger according to claim 1 is characterized in that: A liquid level gauge, a pressure sensor and a temperature sensor are provided in both the first jacketed heat exchanger (4) and the second jacketed heat exchanger (5).

4. The hydraulic compressed air energy storage system based on a jacketed heat exchanger according to claim 1 is characterized in that: The pressure of the first jacketed heat exchanger (4) and the second jacketed heat exchanger (5) does not exceed 50 MPa, and the gas temperature in the reactors of the first jacketed heat exchanger (4) and the second jacketed heat exchanger (5) does not exceed 300°C.

5. The hydraulic compressed air energy storage system based on a jacketed heat exchanger according to claim 1 is characterized in that: An integrated water pump / water turbine (8) is provided to replace the first water pump (2) and the water turbine (3).

6. The hydraulic compressed air energy storage system based on a jacketed heat exchanger according to claim 1 is characterized in that: An enhanced heat exchange structure is provided in the outer jackets of the first jacketed heat exchanger (4) and the second jacketed heat exchanger (5).

7. The hydraulic compressed air energy storage system based on a jacketed heat exchanger according to claim 1 is characterized in that: An atomizing spray device is provided in the first jacketed heat exchanger (4), and the atomizing spray device is connected to the water inlet of the first jacketed heat exchanger (4) or an external water source via a third water pump (7).

8. The hydraulic compressed air energy storage system based on a jacketed heat exchanger according to claim 7 is characterized in that: The water temperature of the external water source is lower than the water temperature in the first jacketed heat exchanger (4).

9. The hydraulic compressed air energy storage system based on a jacketed heat exchanger according to claim 1, characterized in that: A bypass pipeline is arranged between the first jacketed heat exchanger (4) and the second jacketed heat exchanger (5), and a valve is arranged on the bypass pipeline.

10. The hydraulic compressed air energy storage system based on a jacketed heat exchanger according to claim 1, characterized in that: The cold source is a cold fluid in an external system or water in a water reservoir (1).

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