A compressed air refrigeration, energy storage coupled organic working medium ORC power generation comprehensive energy utilization system

Abstract

The application discloses a kind of compressed air refrigeration, energy storage coupling organic working medium ORC power generation integrated energy utilization system, including compressed air refrigeration system, heat storage system and organic working medium ORC power generation system, compressed air refrigeration system includes the low-pressure compressor, first heat exchanger, high-pressure compressor, second heat exchanger, refrigeration turbine connected in sequence;The output side of refrigeration turbine is connected generator and cold energy utilization unit respectively;Heat storage system includes heat storage medium cold tank, booster pump, heat storage medium hot tank;The outlet of heat storage medium cold tank is connected with the heat storage medium import of first and second heat exchanger respectively by pipeline, and the import of heat storage medium hot tank is connected with the heat storage medium export of first and second heat exchanger respectively by pipeline;Organic working medium ORC power generation system includes condenser, working medium pump, preheater, evaporator, ORC turbine connected in sequence;The output side of ORC turbine is connected ORC generator and the import end of condenser respectively.The application can effectively reduce cost, system operation is flexible.

Description

Technical Field

[0001] This invention belongs to the field of power generation technology, specifically a comprehensive energy utilization system that combines compressed air refrigeration, energy storage, and organic working fluid (ORC) power generation. Background Technology

[0002] The search for more economical and efficient energy sources remains humanity's ultimate goal for a considerable period. Since setting dual carbon targets for 2020, my country has been building a new power system primarily based on new energy sources.

[0003] Driven by the exploration of new energy utilization methods, and relying on the commonly used large-capacity physical energy storage system—compressed gas energy storage system—this invention proposes a new approach to address the major barrier hindering the technological development of compressed gas energy storage systems—the gas storage problem: 1. In conventional compressed air energy storage projects, low-pressure side air can be directly discharged into the atmosphere, while high-pressure side air must be stored in the form of underground salt caverns, mine pits, or above-ground high-pressure gas storage devices. 2. In conventional compressed CO2 energy storage systems, CO2 on the high-pressure side can be stored in a liquid state, but CO2 on the low-pressure side is usually in a gaseous state because the atmospheric boiling point is lower than room temperature, and it can only be stored in the form of a gas storage tank.

[0004] In both of the above compressed gas energy storage projects, whether it is the storage of gas on the high-pressure side or the low-pressure side, the storage of gas on both sides adds a huge amount of space, equipment and capital investment to the entire system. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a comprehensive energy utilization system that combines compressed air refrigeration and energy storage with organic refrigerant (ORC) power generation. This system utilizes the pressure energy of compressed air for refrigeration, air separation, and power generation without a gas storage device, and then directly discharges the exhaust gas to the atmosphere. The thermal energy generated during the storage process is stored as a heat storage medium.

[0006] The technical objective of this invention is achieved through the following technical solution: A comprehensive energy utilization system combining compressed air refrigeration, energy storage, and organic refrigerant (ORC) power generation includes a compressed air refrigeration system, a thermal storage system, and an ORC power generation system. The compressed air refrigeration system comprises a low-pressure compressor, a first heat exchanger, a high-pressure compressor, a second heat exchanger, and a refrigeration turbine connected in sequence. The output side of the refrigeration turbine is connected to a generator and a cold energy utilization unit. The refrigeration turbine receives high-pressure ambient air, expands it to atmospheric pressure, and drives the generator, simultaneously generating low-temperature cold energy. The cold energy output end of the refrigeration turbine is connected to the cold energy utilization unit, and the output end of the cold energy utilization unit discharges exhaust gas into the atmosphere. The thermal storage system includes a cold storage tank, a booster pump, and a hot storage tank, all along the flow direction of the storage medium. The outlet of the cold storage tank is connected via pipelines to the first and second heat exchangers. The inlet of the thermal storage medium is connected, and the inlet of the thermal storage medium hot tank is connected to the thermal storage medium outlet of the first heat exchanger and the second heat exchanger respectively through pipelines; the organic working fluid ORC power generation system includes a condenser, a working fluid pump, a preheater, an evaporator, and an ORC turbine connected in sequence; the output side of the ORC turbine is connected to the inlet of the ORC generator and the condenser respectively. After the organic working fluid gas enters the ORC turbine and expands to do work, the expanded organic working fluid gas undergoes a heat release phase change through the condenser and becomes liquid; the first outlet of the thermal storage medium hot tank is connected to the thermal storage medium inlet of the evaporator through a thermal storage medium hot state pipeline, and the thermal storage medium outlet of the evaporator is connected to the thermal storage medium inlet of the preheater through a bypass pipeline; the thermal storage medium outlet of the preheater is connected to the inlet of the thermal storage medium cold tank through a thermal storage medium cold state pipeline.

[0007] Preferably, the cold energy utilization unit includes a refrigeration tank for storing cold energy and / or a cooling module for directly supplying cooling to the outside; the cold energy utilization unit is installed on a cold energy output pipe connected to the cold energy output end of the refrigeration turbine.

[0008] Preferably, the inlet and outlet of the refrigeration storage tank are connected to the cold energy output pipeline through inlet pipe and outlet pipe, respectively, and valves are provided on the inlet pipe and outlet pipe, respectively.

[0009] Preferably, a heat source pipeline is provided between the hot-state pipeline of the heat storage medium and the cold-state pipeline of the heat storage medium, and the heat source pipeline is used to connect other heat sources.

[0010] Preferably, the second outlet of the heat storage medium tank is connected to an external heating pipeline for direct external heating.

[0011] Preferably, the condenser is replaced by an air-cooled system.

[0012] Preferably, a liquid booster pump is provided on the hot pipeline of the heat storage medium.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention couples high-pressure air with other industrial applications (refrigeration, air separation) through a compressed air refrigeration system and a thermal storage system. It utilizes the pressure energy stored in compressed air for refrigeration, air separation, and power generation, and then directly discharges the exhaust gas to the atmosphere, storing the heat energy generated during the storage process as a thermal storage medium. Currently, in commonly used compressed gas energy storage systems, the temperature of the heat energy obtained through the compressor is typically around 200°C. Considering the heat exchange difference, the usable temperature is usually below 200°C. In the power generation system, considering the easy storage characteristics of the working fluid, the Rankine cycle (ORC cycle) is selected to achieve liquid storage. In this cycle, liquid storage can be achieved on both the high-pressure and low-pressure sides of the working fluid. By eliminating the gas storage device and coupling compressed heat energy storage with expansion cooling direct utilization technology, a gas storage-free system is achieved, overcoming the bottlenecks of high cost and strict geographical limitations of traditional gas storage systems. Utilizing the pressure energy stored in compressed air for refrigeration, air separation, and power generation, and then directly discharging the exhaust gas to the atmosphere, while storing the heat energy generated during the storage process as a thermal storage medium, effectively improves energy efficiency. This technology solves the problems of high gas storage costs and strict geographical restrictions in traditional systems, and has the advantages of effectively reducing costs, facilitating system site selection, and providing flexible system operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the system structure of the present invention; Figure reference numerals: 11—Low-pressure compressor; 111—Motor; 12—First heat exchanger; 13—High-pressure compressor; 14—Second heat exchanger; 15—Refrigeration turbine; 151—Generator; 16—Refrigeration storage tank; 161—Inlet pipe; 162—Outlet pipe; 17—Cooling module; 18—Cooling energy output pipe; 21—Cold tank for thermal storage medium; 22—Booster pump; 23—Hot tank for thermal storage medium; 24—First thermal storage medium main pipe; 241—First inlet branch pipe; 242—Second inlet branch pipe; 25—Second thermal storage medium main pipe; 251—First outlet branch pipe; 252—Second outlet branch pipe; 26—Hot thermal storage medium pipeline; 261—Liquid booster pump; 27—Bypass pipeline; 28—Cold thermal storage medium pipeline; 31—Condenser; 32—Working fluid pump; 33—Preheater; 34—Evaporator; 35—ORC turbine; 351—ORC generator. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0017] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0018] like Figure 1As shown, a comprehensive energy utilization system for compressed air refrigeration, energy storage coupled with organic refrigerant (ORC) power generation includes a compressed air refrigeration system, a thermal storage system, and an organic refrigerant ORC power generation system. The compressed air refrigeration system includes a low-pressure compressor 11, a first heat exchanger 12, a high-pressure compressor 13, a second heat exchanger 14, and a refrigeration turbine 15 connected in sequence. The output side of the refrigeration turbine 15 is connected to a generator 151 and a cold energy utilization unit. The refrigeration turbine 15 receives high-pressure ambient temperature air cooled by the second heat exchanger 14, expands it to atmospheric pressure, and drives the generator 151, simultaneously generating low-temperature cold energy. The cold energy output end of the refrigeration turbine 15 is connected to the cold energy utilization unit, and the exhaust from the output end of the cold energy utilization unit is discharged into the atmosphere. The thermal storage system includes components along the flow direction of the thermal storage medium. The system includes a cold storage tank 21, a booster pump 22, and a hot storage tank 23. The outlet of the cold storage tank 21 is connected to the inlet of the first heat exchanger 12 and the second heat exchanger 14 via pipelines. The inlet of the hot storage tank 23 is connected to the outlet of the first heat exchanger 12 and the second heat exchanger 14 via pipelines. The organic working fluid ORC power generation system includes a condenser 31, a working fluid pump 32, a preheater 33, an evaporator 34, and an ORC turbine 35 connected in sequence. The output side of the ORC turbine 35 is also connected to the inlet of the ORC generator 351 and the condenser 31. After the organic working fluid gas enters the ORC turbine 35 and expands to do work, the expanded organic working fluid gas undergoes an exothermic phase change through the condenser 31 and transforms into a liquid state. The first outlet of the hot storage medium tank 23 is connected to the inlet of the evaporator 34 via the hot storage medium pipeline 26. The outlet of the evaporator 34 is connected to the inlet of the preheater 33 via the bypass pipeline 27. The outlet of the preheater 33 is connected to the inlet of the cold storage medium tank 21 via the cold storage medium pipeline 28.

[0019] By coupling high-pressure air with other industrial applications (refrigeration, air separation) through compressed air refrigeration and thermal storage systems, the pressure energy stored in compressed air is used for refrigeration, air separation, and power generation. The exhaust can then be directly discharged to the atmosphere, and the thermal energy generated during the storage process is stored as a thermal storage medium. Currently, in commonly used compressed gas energy storage systems, the temperature of the thermal energy obtained through compressors is typically around 200℃. Considering the heat exchange difference, the usable temperature is usually below 200℃. In power generation systems, considering the easy storage characteristics of the working fluid, the Rankine cycle (ORC cycle) is selected to achieve liquid storage. In this cycle, liquid storage can be achieved on both the high-pressure and low-pressure sides of the working fluid. By eliminating the gas storage device and coupling compressed thermal energy storage with expansion refrigeration direct utilization technology, a gas storage-free system is achieved, overcoming the bottlenecks of high cost and geographical limitations inherent in traditional gas storage systems. Utilizing the pressure energy stored in compressed air for refrigeration, air separation, and power generation, and then directly discharging the exhaust to the atmosphere, while storing the thermal energy generated during the storage process as a thermal storage medium, effectively improves energy efficiency. This technology solves the problems of high gas storage costs and strict geographical restrictions in traditional systems, and has the advantages of effectively reducing costs, facilitating system site selection, and providing flexible system operation.

[0020] like Figure 1 As shown, the compressed air refrigeration system includes a low-pressure compressor 11, a first heat exchanger 12, a high-pressure compressor 13, a second heat exchanger 14, a refrigeration turbine 15, and a cold energy utilization unit along the compressed air flow direction.

[0021] The system comprises a low-pressure compressor 11, a first heat exchanger 12, a high-pressure compressor 13, a second heat exchanger 14, and a refrigeration turbine 15, connected in sequence. Specifically, the outlet of the low-pressure compressor 11 is connected to the inlet of the first heat exchanger 12 via a first compressed air pipe; the low-pressure compressor 11 is connected to a motor 111, which drives the compressor. The outlet of the first heat exchanger 12 is connected to the inlet of the high-pressure compressor 13 via a second compressed air pipe. The outlet of the high-pressure compressor 13 is connected to the inlet of the second heat exchanger 14 via a third compressed air pipe. The outlet of the second heat exchanger 14 is connected to the inlet side of the refrigeration turbine 15 via a fourth compressed air pipe; the output side of the refrigeration turbine 15 is connected to a generator 151 and a cold energy utilization unit; specifically, the output side of the refrigeration turbine 15 includes a generator 151 connected to the output shaft of the refrigeration turbine 15 and a cold energy utilization unit connected to the cold energy output terminal of the refrigeration turbine 15. The refrigeration turbine 15 receives… High-pressure ambient air cooled by the second heat exchanger 14 expands to atmospheric pressure and drives the generator 151, generating low-temperature cold energy. The cold energy output end of the refrigeration turbine 15 is connected to the cold energy utilization unit, and the exhaust from the output end of the cold energy utilization unit is discharged into the atmosphere.

[0022] In actual use, ambient temperature, low-pressure air from the atmosphere is compressed by a low-pressure compressor 11 driven by an electric motor, becoming medium-pressure, high-temperature air. Then, it passes through the first heat exchanger 12, where it becomes high-pressure, ambient temperature air after heat exchange. It continues to be compressed by the high-pressure compressor 13, becoming high-pressure, high-temperature air. Then, it passes through the second heat exchanger 14, where it becomes high-pressure, ambient temperature air after heat exchange. Finally, it enters the refrigeration turbine 15 to expand to atmospheric pressure and is powered by the generator 151. During this process, the air temperature decreases, thus achieving refrigeration.

[0023] like Figure 1 As shown, the cold energy utilization unit includes a refrigeration tank 16 for storing cold energy and / or a cooling module 17 for direct external cooling; the cold energy utilization unit is installed on a cold energy output pipe 18 connected to the cold energy output end of the refrigeration turbine 15. Through the combination of the refrigeration tank 16 and the cooling module 17, both cold energy storage (peak shaving and valley filling) and direct cooling (cold chain / air conditioning) modes are supported to meet diverse cooling needs.

[0024] The inlet and outlet of the refrigeration storage tank 16 are connected to the cold energy output pipe 18 via inlet pipe 161 and outlet pipe 162, respectively, and valves are installed on inlet pipe 161 and outlet pipe 162. This valve-controlled pipe connection method enables rapid charging / discharging of the refrigeration storage tank 16, thereby improving the system's peak-shaving capacity.

[0025] In specific implementation, when a refrigeration storage tank 16 and a cooling module 17 are installed on the cold energy output pipeline 18, the refrigerant can be stored in the refrigeration storage tank 16 through the valves of the inlet pipeline 161 and the outlet pipeline 162, or the cooling module 17 can be used to directly supply cooling to the outside. After the air is cooled to room temperature, it is directly discharged into the atmosphere.

[0026] like Figure 1 As shown, the thermal storage system includes a cold storage tank 21, a booster pump 22, and a hot storage tank 23, all along the flow direction of the thermal storage medium. The outlet of the cold storage tank 21 is connected via pipelines to the inlets of the first heat exchanger 12 and the second heat exchanger 14, respectively. The inlet of the hot storage tank 23 is connected via pipelines to the outlets of the first heat exchanger 12 and the second heat exchanger 14, respectively. In actual use, the thermal storage medium may include water, heat transfer oil, molten salt, etc.

[0027] Specifically, the outlet of the heat storage medium cold tank 21 is connected to the heat storage medium inlets of the first heat exchanger 12 and the second heat exchanger 14 via a first heat storage medium pipeline. The first heat storage medium pipeline includes a first heat storage medium main pipe 24, on which a first inlet branch pipe 241 and a second inlet branch pipe 242 are connected in parallel to the heat storage medium inlets of the first heat exchanger 12 and the second heat exchanger 14. A booster pump 22 is installed on the first heat storage medium main pipe 24.

[0028] The inlet of the heat storage medium tank 23 is connected to the heat storage medium outlets of the first heat exchanger 12 and the second heat exchanger 14 via a second heat storage medium pipeline. The second heat storage medium pipeline includes a second heat storage medium main pipe 25, on which a first outlet branch pipe 251 and a second outlet branch pipe 252 are connected in parallel to the heat storage medium inlets of the first heat exchanger 12 and the second heat exchanger 14.

[0029] In actual use, the heat storage medium cold tank 21 is pressurized through the first heat storage medium pipeline and the booster pump 22 to output the heat storage medium to the first heat exchanger 12 and the second heat exchanger 14; after the first heat exchanger 12 and the second heat exchanger 14 absorb the heat from the outlet of the low-pressure compressor 11 and the high-pressure compressor 13, the heat storage medium after absorbing the heat is then stored in the heat storage medium hot tank 23 through the second heat storage medium pipeline.

[0030] like Figure 1 As shown, in this embodiment, the thermal storage medium hot tank 23 includes two outlets. Specifically, the first outlet of the thermal storage medium hot tank 23 is connected to the thermal storage medium inlet of the evaporator 34 through the thermal storage medium hot state pipeline 26, and the thermal storage medium outlet of the evaporator 34 is connected to the thermal storage medium inlet of the preheater 33 through the bypass pipeline 27; the thermal storage medium outlet of the preheater 33 is connected to the inlet of the thermal storage medium cold tank 21 through the thermal storage medium cold state pipeline 28.

[0031] The second outlet of the thermal storage medium tank 23 is connected to an external heating pipeline for direct external heating. Using this technology, the heat in the thermal storage medium tank 23 can be stored, used to heat the evaporator 34, or directly supplied to the outside. Direct external heating (60-150℃ medium-low temperature heat) through the second outlet of the thermal storage medium tank 23 achieves combined power generation and heating, with an energy utilization rate exceeding 80%.

[0032] like Figure 1 As shown, a liquid booster pump 261 is also installed on the hot pipeline 26 of the heat storage medium. The liquid booster pump 261 maintains the pressure of the heat storage medium, ensuring efficient phase change of the working fluid in the evaporator 34 and avoiding a decrease in power generation efficiency due to pressure fluctuations.

[0033] like Figure 1As shown, a heat source pipeline is provided between the hot-state pipeline 26 and the cold-state pipeline 28 of the heat storage medium. The heat source pipeline is used to connect to other heat sources. The heat source pipeline supports connection to solar collectors or industrial waste heat (such as waste heat from steel plants) to supplement the heat source during off-peak periods of the power grid and ensure continuous power generation of ORC.

[0034] like Figure 1 As shown, the organic working fluid ORC power generation system includes a condenser 31, a working fluid pump 32, a preheater 33, an evaporator 34, and an ORC turbine 35 connected in sequence. The output side of the ORC turbine 35 is also connected to the inlet end of the ORC generator 351 and the condenser 31, respectively. After the organic working fluid gas enters the ORC turbine 35 and expands to do work, the expanded organic working fluid gas undergoes an exothermic phase change through the condenser 31 and transforms into a liquid state.

[0035] Specifically, the organic working fluid ORC power generation system includes a condenser 31, a working fluid pump 32, a preheater 33, an evaporator 34, and an ORC turbine 35, arranged along the direction of the organic working fluid flow. The organic working fluid outlet of the condenser 31 is connected to the inlet of the working fluid pump 32 via a pipe. The outlet of the working fluid pump 32 is connected to the organic working fluid inlet of the preheater 33 via a pipe. The organic working fluid outlet of the preheater 33 is connected to the organic working fluid inlet of the evaporator 34 via a pipe. The organic working fluid outlet of the evaporator 34 is connected to the inlet of the ORC turbine 35 via a pipe. The output side of the ORC turbine 35 is connected to the organic working fluid inlet of the condenser 31 via a pipe, and the output side of the ORC turbine 35 is also connected to an ORC generator 351 for power generation. Specifically, the output shaft of the ORC turbine 35 is connected to the shaft of the ORC generator 351; the outlet of the ORC turbine 35 is connected to the organic working fluid inlet of the condenser 31 via a pipe.

[0036] In actual use, the organic working fluid liquid flows out from the outlet of the condenser 31, is pressurized by the working fluid pump 32, and enters the preheater 33 and evaporator 34 successively to absorb heat and increase temperature, and undergoes a phase change from working fluid to gas. It then enters the ORC turbine 35 to expand and do work, and generates electricity through the ORC generator 351. The expanded organic working fluid gas undergoes an exothermic phase change in the condenser 31 to become liquid, and the cycle continues.

[0037] The cold source in the condenser 31 is circulating cooling water, which enters the condenser 31 through a circulating water pump to absorb the heat from the turbine exhaust steam.

[0038] Condenser 31 is replaced with an air-cooled system. In practical use, the air-cooled system can be an air-cooled island module. This technology is suitable for arid regions and regions with relatively abundant water resources.

[0039] The technical solutions provided by the embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of the present invention. The descriptions of the embodiments above are only for helping to understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A comprehensive energy utilization system of compressed air refrigeration, energy storage coupled organic working medium (ORC) power generation, characterized in that, This includes compressed air refrigeration systems, thermal storage systems, and organic refrigerant (ORC) power generation systems. The compressed air refrigeration system includes a low-pressure compressor, a first heat exchanger, a high-pressure compressor, a second heat exchanger, and a refrigeration turbine connected in sequence. The output side of the refrigeration turbine is connected to the generator and the cold energy utilization unit respectively. The refrigeration turbine receives high-pressure room temperature air, expands to atmospheric pressure and drives the generator, while generating low-temperature cold energy. The cold energy output end of the refrigeration turbine is connected to the cold energy utilization unit, and the output end of the cold energy utilization unit exhausts into the atmosphere. The thermal storage system includes a thermal storage medium cold tank, a booster pump, and a thermal storage medium hot tank along the flow direction of the thermal storage medium; the outlet of the thermal storage medium cold tank is connected to the thermal storage medium inlet of the first heat exchanger and the second heat exchanger respectively through pipelines, and the inlet of the thermal storage medium hot tank is connected to the thermal storage medium outlet of the first heat exchanger and the second heat exchanger respectively through pipelines. The organic working fluid ORC power generation system includes a condenser, a working fluid pump, a preheater, an evaporator, and an ORC turbine connected in sequence. The output side of the ORC turbine is connected to the inlet of the ORC generator and the condenser, respectively. After the organic working fluid gas enters the ORC turbine and expands to do work, the expanded organic working fluid gas undergoes an exothermic phase change through the condenser and transforms into a liquid state. The first outlet of the hot storage medium tank is connected to the inlet of the evaporator via a hot storage medium pipeline, and the outlet of the evaporator is connected to the inlet of the preheater via a bypass pipeline; the outlet of the preheater is connected to the inlet of the cold storage medium tank via a cold storage medium pipeline. The cold energy utilization unit includes a refrigeration tank for storing cold energy and / or a cooling module for directly supplying cooling to the outside; the cold energy utilization unit is installed on a cold energy output pipe connected to the cold energy output end of the refrigeration turbine. The second outlet of the heat storage medium tank is connected to an external heating pipeline for direct external heating. A liquid booster pump is installed on the hot pipeline of the heat storage medium.

2. The compressed air refrigeration, energy storage coupled organic working fluid ORC power generation integrated energy utilization system of claim 1, wherein, The inlet and outlet of the refrigeration storage tank are connected to the cold energy output pipeline through inlet pipe and outlet pipe, respectively, and valves are installed on the inlet pipe and outlet pipe, respectively. 3.The comprehensive energy utilization system of compressed air refrigeration and energy storage coupled organic working medium ORC power generation according to claim 1, characterized in that, A heat source pipeline is provided between the hot-state pipeline and the cold-state pipeline of the heat storage medium, and the heat source pipeline is used to connect other heat sources.

4. The integrated energy utilization system for compressed air refrigeration, energy storage coupled with organic working fluid ORC power generation according to claim 1, characterized in that, The condenser was replaced with an air-cooled system.

Images