Comprehensive performance test system for heat exchange device of gas energy storage system

Abstract

The invention discloses a comprehensive performance test system for a heat exchange device of a gas energy storage system, which comprises a buffer tank, a humidifier, a compressor, a gas heater / cooler, a dust chamber, a gas filter, a regulating valve, a to-be-tested device, a gas purification chamber and the like which are arranged on a gas side loop, the device is used for simulating the working conditions of temperature, humidity, dust load and the like of high-pressure gas in the energy storage (compression) and energy release (expansion) processes; a hot liquid tank, a cold liquid tank, a liquid pump, a particle chamber, a liquid filter, a liquid heater / cooler and the like are arranged on a liquid side loop and used for simulating particle pollution, temperature change and circulation characteristics of a liquid working medium in the heat exchange process, and meanwhile a flow meter, a temperature sensor and a pressure sensor are arranged on a control and measurement unit to monitor data in real time. And dynamic control of flow and working conditions is realized through a regulating valve, pump power and the like. The comprehensive performance testing system for the heat exchange device of the gas energy storage system is wide in testing range, complete in function and compact in structure.

Description

Technical Field

[0001] The present invention belongs to the field of energy storage technology, and in particular relates to a comprehensive performance testing system for a heat exchange device of a gas energy storage system. Background Art

[0002] Heat exchangers are essential energy exchange devices in gas energy storage systems. In recent years, numerous gas energy storage technologies have developed rapidly, including advanced adiabatic compressed air energy storage, salt cavern compressed air energy storage, ground-based compressed air energy storage, air-steam combined cycle compressed air energy storage, and transcritical carbon dioxide energy storage. During the energy storage process in a gas energy storage system, the gas is compressed and heated by various compressors before exchanging heat with the heat storage medium in various regenerators and stored in salt caverns, gas storage chambers, and gas tanks. During the energy release process, the high-pressure gas in the salt caverns, gas storage chambers, and gas tanks is heated by various reheaters before entering various expanders to drive generators for power generation. The heat exchange process of the high-pressure gas in the regenerators and reheaters can produce condensate, condensed salt solutions, water vapor, and salt mist. These by-products can directly impact the system's energy storage efficiency and equipment lifespan. Furthermore, as the service life of the heat exchanger increases, dust particles in the gas and liquid working fluids tend to accumulate within the heat exchanger, increasing resistance within the working fluid heat exchanger and reducing heat exchange efficiency.

[0003] When studying the changes in various properties such as heat transfer and resistance during the application of heat exchange devices over time, it is necessary to conduct experimental tests on their various properties. In this regard, Chinese Patent 202310273855.0 discloses an air energy storage heat exchange module performance test system, which cannot simulate the real and complex working conditions of the heat exchange device such as dust deposition and salt spray, and it focuses on flow heat transfer and cycle stability, and cannot adapt to the working conditions of heat exchange devices in various gas energy storage technologies; Chinese Patent Publication No. CN222013535U is aimed at phase change heat storage scenarios, and does not cover technical indicators such as heat transfer, resistance, and corrosion, but focuses on heat storage and release efficiency and dynamic response. It can be seen that the existing heat exchange device performance test platform cannot fully simulate the actual use conditions of the heat exchange device in the gas energy storage system, and its comprehensive performance test has shortcomings such as low pressure, incomplete functions, and narrow test range. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned technologies and provide a comprehensive performance testing system for a gas energy storage system heat exchange device with a wide testing range, complete functions and compact structure.

[0005] The technical solution adopted by the present invention to achieve its technical objectives is: The present invention provides a comprehensive performance test system for a gas energy storage system heat exchange device, comprising a buffer tank, a humidifier, a compressor, a gas heater, a first gas cooler, a dust chamber, a gas filter, a gas purification chamber, a second gas cooler, a hot liquid tank, a liquid heater, a particle chamber, a first liquid filter, a second liquid filter, a liquid cooler, and a cold liquid tank, wherein: the first outlet of the buffer tank is connected to the inlet of the humidifier, the outlet of the humidifier is connected to the inlet of the compressor, the outlet of the compressor is provided with a first branch and a second branch connected in parallel, the inlet of the first branch is connected to the inlet of the gas heater, the inlet of the second branch is connected to the inlet of the first gas cooler The first branch and the second branch outlets are provided with a gas measurement branch and a regulating branch connected in parallel, the gas measurement branch is provided with a dust chamber, the dust chamber outlet is connected to the gas filter inlet, the gas filter outlet is connected to the gas side channel A inlet of the device to be tested, and the gas side channel A outlet of the device to be tested is connected to the gas flow meter inlet; a regulating valve is provided on the regulating branch, and the regulating branch and the measuring branch are connected to the gas purification inlet after the gas flow meter outlet and the regulating valve outlet are merged, the gas purification chamber outlet is connected to the second gas cooler inlet, the second gas cooler 1 outlet is connected to the second inlet of the buffer tank, and the second outlet of the buffer tank is connected to the vacuum pump inlet; The hot liquid outlet is connected to the hot liquid inlet, and the hot liquid pump outlet is provided with a self-circulating heating branch and a liquid measuring branch in parallel. The liquid heater outlet of the self-circulating heating branch is connected to the hot liquid tank inlet; the liquid flow meter outlet is connected to the particle chamber inlet, the particle chamber is connected to the first liquid filter inlet, the first liquid filter outlet is connected to the liquid side channel B inlet of the device to be tested, the liquid side channel B outlet of the device to be tested is connected to the second liquid filter inlet, the second liquid filter outlet is connected to the liquid cooler inlet, the liquid cooler outlet is connected to the cold liquid tank inlet, the cold liquid tank outlet is connected to the cold liquid pump inlet, and the cold liquid pump outlet is connected to the self-circulating heating branch.

[0006] The above-mentioned comprehensive performance test system for the heat exchange device of a gas energy storage system, wherein: a pressure sensor is provided on the buffer tank, a valve A is provided on the first inlet pipeline, and a valve B is provided on the pipeline connecting the first outlet and the humidifier inlet.

[0007] The above-mentioned comprehensive performance test system for the heat exchange device of a gas energy storage system, wherein: the pipeline connecting the first branch inlet and the gas heater inlet is provided with a valve C, and the pipeline connecting the second branch inlet and the first gas cooler inlet is provided with a valve D.

[0008] The above-mentioned comprehensive performance test system for the heat exchange device of a gas energy storage system, wherein: a temperature sensor A and a pressure sensor A are provided on the pipeline connecting the outlet of the gas filter and the inlet of the gas side channel A of the device to be tested; a temperature sensor B and a pressure sensor B are provided on the pipeline connecting the outlet of the gas side channel A of the device to be tested and the inlet of the gas flow meter.

[0009] The above-mentioned comprehensive performance testing system for the heat exchange device of a gas energy storage system, wherein: a regulating valve is provided on the regulating branch.

[0010] The above-mentioned comprehensive performance test system for the heat exchange device of a gas energy storage system, wherein: a pressure reducing valve is provided on the pipeline connecting the outlet of the second gas cooler and the second inlet of the buffer tank, and a valve E is provided on the pipeline connecting the second outlet of the buffer tank and the inlet of the vacuum pump.

[0011] The above-mentioned comprehensive performance test system for the heat exchange device of a gas energy storage system, wherein: a temperature sensor C is provided on the hot liquid tank, and a valve F is provided on the pipeline connecting the hot liquid tank outlet and the hot liquid pump inlet.

[0012] The above-mentioned comprehensive performance testing system for the heat exchange device of a gas energy storage system, wherein: a valve G is provided on the inlet pipe of the liquid heater of the self-circulating heating branch.

[0013] The above-mentioned comprehensive performance test system for the heat exchange device of the gas energy storage system, wherein: a valve H is provided on the inlet pipe of the liquid flow meter of the liquid measurement branch.

[0014] The above-mentioned comprehensive performance test system for the heat exchange device of a gas energy storage system, wherein: a temperature sensor D and a pressure sensor D are provided on the pipeline connecting the outlet of the first liquid filter and the inlet of the liquid side channel B of the device under test 100, and a temperature sensor E and a pressure sensor E are provided on the pipeline connecting the outlet of the liquid side channel B of the device under test and the inlet of the second liquid filter.

[0015] The above-mentioned comprehensive performance test system for the heat exchange device of a gas energy storage system, wherein: a valve I is provided on the pipeline connecting the outlet of the cold liquid tank and the inlet of the cold liquid pump, and a valve J is provided on the pipeline connecting the outlet of the cold liquid pump and the self-circulating heating branch.

[0016] Compared with existing technologies, this invention offers significant advantages. As can be seen from the above technical solutions, the gas-side circuit is equipped with a buffer tank, a humidifier, a compressor, a gas heater / cooler, a dust chamber, a gas filter, a regulating valve, a device under test, and a gas purification chamber to simulate the temperature, humidity, and dust load of high-pressure gas during energy storage (compression) and energy release (expansion). The liquid-side circuit is equipped with a hot liquid tank, a cold liquid tank, a liquid pump, a particle chamber, a liquid filter, a liquid heater / cooler, and other components to simulate particle contamination, temperature changes, and circulation characteristics of the liquid working fluid during heat exchange. Flow meters, temperature sensors, and pressure sensors are also included in the control and measurement unit to monitor data in real time. Dynamic control of flow and operating conditions is achieved through regulating valves and pump power. This invention utilizes dual-circuit collaborative testing, with the gas and liquid circuits independently controlled and dynamically coupled. This supports simulation of both energy storage (compression) and energy release (expansion), covering a wider range of test scenarios and adapting to a variety of gas energy storage technologies (such as salt cavern compression and liquid air energy storage), resulting in high technical versatility. It can realistically simulate the humidity, salinity, and dust conditions of heat exchangers in gas energy storage systems and conduct comprehensive performance testing. By changing the working fluids on the gas and water sides and adjusting the composition, particle size, and concentration of solid and liquid particles in the humidifier, dust chamber, and particle chamber, it can conduct performance tests on different heat exchangers under different operating conditions, including heat transfer performance, resistance characteristics, thermal scaling and clogging issues, corrosion issues, and impact and weather resistance. It offers advantages such as high test pressure, comprehensive functionality, a wide test range, and a compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the comprehensive performance testing system of the gas energy storage system heat exchange device of the present invention.

[0018] Markings in the figure: 101. Buffer tank, 102. Humidifier, 103. Compressor, 104. Gas heater, 105. First gas cooler, 106. Dust chamber, 107. Gas filter, 108. Control valve, 100. Device under test, 109. Gas flow meter, 110. Gas purification chamber, 111. Second gas cooler, 112. Pressure reducing valve, 113. Vacuum pump, 201. Hot liquid tank, 202. Hot liquid pump, 203. Liquid heater, 204. Liquid flow meter, 205. Particle chamber, 206. First liquid filter, 207. Second liquid Filter, 208. Liquid cooler, 209. Cold liquid tank, 210. Cold liquid pump, 3. Valve A, 4. Valve B, 5. Valve C, 6. Valve D, 7. Valve E, 8. Valve F, 9. Valve G, 10. Valve H, 11. Valve I, 12. Valve J, 13. Temperature sensor A, 14. Temperature sensor B, 15. Temperature sensor C, 16. Temperature sensor D, 17. Temperature sensor E, 18. Pressure sensor A, 19. Pressure sensor B, 20. Pressure sensor C, 21. Pressure sensor D, 22. Pressure sensor E. DETAILED DESCRIPTION

[0019] The following, in conjunction with the accompanying drawings and preferred embodiments, describes in detail the specific implementation, structure, features, and efficacy of a comprehensive performance testing system for a gas energy storage system heat exchange device proposed by the present invention. Example 1: like Figure 1As shown, a comprehensive performance test system for a gas energy storage system heat exchange device of the present invention includes a buffer tank 101, a humidifier 102, a compressor 103, a gas heater 104, a first gas cooler 105, a dust chamber 106, a gas filter 107, a gas purification chamber 110, a second gas cooler 111, a hot liquid tank 201, a liquid heater 203, a particle chamber 205, a first liquid filter 206, a second liquid filter 207, a liquid cooler 208, and a cold liquid tank 209, wherein: a pressure sensor 18 is provided on the buffer tank 101, a valve A3 is provided on the first inlet pipeline, a valve B4 is provided on the pipeline connecting the first outlet and the inlet of the humidifier 102, the outlet of the humidifier 102 is connected to the inlet of the compressor 103, the outlet of the compressor 103 is provided with a first branch and a second branch connected in parallel, a valve C5 is provided on the pipeline connecting the inlet of the first branch to the inlet of the gas heater 104, and a valve is provided on the pipeline connecting the inlet of the second branch to the inlet of the first gas cooler 105 D6, a gas measuring branch and a regulating branch are provided in parallel at the outlets of the first branch and the second branch, the gas measuring branch is provided with a dust chamber 106, the outlet of the dust chamber 106 is connected to the inlet of the gas filter 107, a temperature sensor A13 and a pressure sensor A18 are provided on the pipeline connecting the outlet of the gas filter 107 and the inlet of the gas side channel 100A of the device under test 100, a temperature sensor B14 and a pressure sensor B19 are provided on the pipeline connecting the outlet of the gas side channel 100A of the device under test and the inlet of the gas flowmeter 109; a regulating valve 108 is provided on the regulating branch, the regulating branch and the measuring branch are connected to the inlet of the gas purification chamber 110 after merging at the outlet of the gas flowmeter 109 and the outlet of the regulating valve 108, the outlet of the gas purification chamber 110 is connected to the inlet of the second gas cooler 111, a pressure reducing valve 112 is provided on the pipeline connecting the outlet of the second gas cooler 111 and the second inlet of the buffer tank 101, and a valve E7 is provided on the pipeline connecting the second outlet of the buffer tank 101 and the inlet of the vacuum pump 113; A temperature sensor C15 is provided on the hot liquid tank 201, a valve F8 is provided on the pipeline connecting the outlet of the hot liquid tank 201 and the inlet of the hot liquid pump 202, a self-circulating heating branch and a liquid measuring branch are provided at the outlet of the hot liquid pump 202 in parallel, a valve G9 is provided on the inlet pipeline of the liquid heater 203 of the self-circulating heating branch, and the outlet of the liquid heater 203 is connected to the inlet of the hot liquid tank 201; a valve H10 is provided on the inlet pipeline of the liquid flow meter 204 of the liquid measuring branch, and the outlet of the liquid flow meter 204 is connected to the inlet of the particle chamber 205, and the particle chamber 205 is connected to the inlet of the first liquid filter 206, and the outlet of the first liquid filter 206 is connected. A temperature sensor D16 and a pressure sensor D21 are provided on the pipeline connecting the outlet of the liquid side channel 100B of the device under test 100; a temperature sensor E17 and a pressure sensor E22 are provided on the pipeline connecting the outlet of the liquid side channel 100B of the device under test and the inlet of the second liquid filter 207; the outlet of the second liquid filter 207 is connected to the inlet of the liquid cooler 208; the outlet of the liquid cooler 208 is connected to the inlet of the cold liquid tank 209; a valve I11 is provided on the pipeline connecting the outlet of the cold liquid tank 209 and the inlet of the cold liquid pump 210; a valve J12 is provided on the pipeline connecting the outlet of the cold liquid pump 210 and the self-circulation heating branch.

[0020] Working principle: Before the test system is run, first open the valve A3 on the first inlet pipeline of the buffer tank 101, and the air supply system supplies air to the buffer tank 101. After the pressure sensor 18 on the buffer tank 101 reads the set value, close the valve A3 to complete the air supply.

[0021] When simulating the compressor outlet regenerator operating conditions during the energy storage process of the gas energy storage system, valve B4 is opened in the gas-side pipeline, and the humidifier 102, compressor 103, gas heater 104, dust chamber 106, gas filter 107, gas purification chamber 110, and second gas cooler 111 are started. Air in the buffer tank 101 flows from the first outlet into the humidifier 102. After becoming saturated in the humidifier 102, the high-pressure air enters the compressor 103 for pressurization to become high-pressure saturated gas. After entering the gas heater 104 of the first branch through valve C5, it is heated and converted into high-pressure saturated hot gas. The gas then enters the dust chamber 106, carrying a certain amount of dust. After entering the gas filter 107, dust particles with a particle size larger than the set value are removed in the gas filter 107, and then enter the gas-side channel 100A of the device under test. The regulating valve 108 on the regulating branch is adjusted to stabilize the reading of the gas flowmeter 109 at the set value. The gas passing through the regulating branch and the gas measuring branch is dehumidified and dust-removed in the gas purification chamber 110, flows into the second gas cooler 111 for further cooling, becomes high-pressure cold air, is reduced in pressure by the pressure reducing valve 112, and then flows back to the buffer tank 101 through the second inlet of the buffer tank 101.

[0022] In the liquid side pipeline, open valve H10, valve I11, and valve J12, start the particle chamber 205, the first liquid filter 206, the second liquid filter 207, the liquid cooler 208, and the cold liquid pump 210. The softened water working medium in the cold liquid tank 209 flows into the liquid measurement branch through the cold liquid pump 210, flows into the particle chamber 205 through the flowmeter 204, and then flows into the first liquid filter 206 to remove particles with a particle size larger than the set value. The water then enters the liquid side channel 100B of the device under test to exchange heat with the high-pressure saturated hot gas in the gas side channel 100A of the device under test. The softened water after heat exchange is cooled by the liquid cooler 208 and flows into the cold liquid tank 209. The power of the cold liquid pump 210 is adjusted to stabilize the reading of the liquid flowmeter 204 at the set value.

[0023] After the flow rates of the water and gas pipelines are stabilized, the temperature sensors and pressure sensors at the inlet and outlet of the test piece 100 stably collect data for a period of time to complete the compressor outlet regenerator working condition simulation.

[0024] During the test, the gas flow meter 109, liquid flow meter 204, temperature sensor A13, temperature sensor B14, temperature sensor C15, temperature sensor D16, temperature sensor E17, pressure sensor A18, pressure sensor B19, pressure sensor C20, pressure sensor D21, and pressure sensor E22 in the test system save and record data in real time. After the required data is stably collected, the system is shut down for data analysis after the test is completed.

[0025] When simulating the expansion machine inlet regenerator operating conditions during the energy release process of the gas energy storage system, valves B4 and D6 are opened in the gas-side pipeline, and the humidifier 102, compressor 103, first gas cooler 105 of the second branch, dust chamber 106, gas filter 107, gas purification chamber 110, and second gas cooler 111 are started. Gas in the buffer tank 101 flows from the first outlet into the humidifier 102. After becoming saturated in the humidifier 102, the gas enters the compressor 103 for compression and becomes high-pressure saturated gas. It then enters the first gas cooler 105 of the second branch to cool down the temperature increased during the compression process. After becoming high-pressure cold gas, the gas enters the dust chamber 106, carrying a certain amount of dust, and then enters the gas filter 107. Dust particles with a particle size larger than a set value are removed in the gas filter 107 before entering the gas-side channel 101a of the device under test. The regulating valve 108 on the regulating branch is adjusted to stabilize the reading of the gas flowmeter 109 at the set value. The gas passing through the regulating branch and the gas measuring branch is dehumidified and dust-removed in the gas purification chamber 110 and then flows into the second cooler 111. After further cooling in the second cooler 111, it becomes high-pressure cold air, which is then reduced in pressure by the pressure reducing valve 112 and flows back to the buffer tank 101 through the second inlet of the buffer tank 101.

[0026] In the liquid side pipeline, the softened water is first self-circulated and heated. Open valve F8 and valve G9, start the hot liquid pump 202 and the liquid heater 203, wait for the softened water working medium in the hot liquid tank 201 to be heated through the self-circulating heating pipeline, and complete the heating after the reading of the temperature sensor C15 reaches the set value.

[0027] Open valves F8 and H10, start the hot liquid pump 202, particle chamber 205, first liquid filter 206, second liquid filter 207, and liquid cooler 208. The high-temperature hot working fluid in hot liquid tank 201 flows through hot liquid pump 202 into the liquid measurement branch, then flows through flowmeter 204 into particle chamber 205 for mixing. It then enters first liquid filter 206 to remove particles larger than the set value, then enters liquid channel 100B of the device under test for heat exchange with the high-pressure cold air in gas channel 100A. After heat exchange, the working fluid is filtered and purified by second liquid filter 207 before entering liquid cooler 208 for further cooling and flowing into cold liquid tank 209. Adjust the power of hot liquid pump 202 to stabilize the value on liquid flowmeter 204 at the set value.

[0028] After the flow rates of the water and gas pipelines are stabilized, the temperature sensors and pressure sensors at the inlet and outlet of the test piece 100 stably collect data for a period of time to complete the expander inlet reheater working condition simulation.

[0029] During the test, the gas flow meter 109, liquid flow meter 204, temperature sensor A13, temperature sensor B14, temperature sensor C15, temperature sensor D16, temperature sensor E17, pressure sensor A18, pressure sensor B19, pressure sensor C20, pressure sensor D21, and pressure sensor E22 in the test system save and record data in real time. After the required data is stably collected, the system is shut down for data analysis after the test is completed.

[0030] When it is necessary to study and detect the corrosion problem and impact weather resistance of gaseous or liquid working fluids on the heat exchange device, in the gas energy storage system, after running for a certain period of time according to the test conditions, the heat exchange device is removed to further study the corrosion and impact conditions.

[0031] The droplet particles in the humidifier 102 can be one or more of the common droplets of water mist and salt mist. The composition, particle size, and concentration of the dust in the dust chamber can be adjusted according to the test needs. The composition, particle size, and concentration of the particles in the particle chamber can be adjusted according to the test needs. The filter element accuracy of the gas filter and the first liquid filter and the second liquid filter can be replaced according to the test needs. The air can be replaced with other gaseous working fluids according to actual needs. When the gas working fluid in the gas side pipeline needs to be replaced, valves A3 and E7 can be opened, and the vacuum pump 113 can be started to replace the working fluid in the buffer tank 101 and the gas side pipeline with the gaseous working fluid provided by the air supply system. Similarly, water can also be replaced with other liquid working fluids according to actual needs.

[0032] The gaseous working medium is compressed air and the liquid working medium is softened water.

[0033] The above embodiments are merely preferred embodiments of the present invention. The scope of protection of the present invention includes but is not limited to them. Any equivalent replacement or modification made by a person skilled in the art within the technical scope disclosed by the present invention and its improved concept shall be covered by the scope of protection of the present invention.

Claims

1. A comprehensive performance test system for a heat exchange device of a gas energy storage system, comprising a buffer tank (101), a humidifier (102), a compressor (103), a gas heater (104), a first gas cooler (105), a dust chamber (106), a gas filter (107), a gas purification chamber (110), a second gas cooler (111), a hot liquid tank (201), a liquid heater (203), a particle chamber (205), a first liquid filter (206), a second liquid filter (207), a liquid cooler (208), and a cold liquid tank (209), wherein: The first outlet of the buffer tank (101) is connected to the inlet of the humidifier (102), the outlet of the humidifier (102) is connected to the inlet of the compressor (103), the outlet of the compressor (103) is provided with a first branch and a second branch connected in parallel, the inlet of the first branch is connected to the inlet of the gas heater (104), the inlet of the second branch is connected to the inlet of the first gas cooler (105), the outlets of the first branch and the second branch are provided with a gas measurement branch and a regulating branch connected in parallel, the gas measurement branch is provided with a dust chamber (106), the outlet of the dust chamber (106) is connected to the inlet of the gas filter (107), the outlet of the gas filter (107) is connected to the device to be tested The gas side channel (100) A of the device (100) is connected to the inlet, and the gas side channel (100) A outlet of the device to be tested is connected to the inlet of the gas flow meter (109); a regulating valve 108 is provided on the regulating branch, and the regulating branch and the measuring branch are connected to the inlet of the gas purification chamber (110) after being combined at the outlet of the gas flow meter (109) and the outlet of the regulating valve (108), the outlet of the gas purification chamber (110) is connected to the inlet of the second gas cooler (111), the outlet of the second gas cooler (111) is connected to the second inlet of the buffer tank (101), and the second outlet of the buffer tank (101) is connected to the inlet of the vacuum pump (113); The outlet of the hot liquid tank (201) is connected to the inlet of the hot liquid pump (202). The outlet of the hot liquid pump (202) is provided with a self-circulating heating branch and a liquid measuring branch connected in parallel. The outlet of the liquid heater (203) of the self-circulating heating branch is connected to the inlet of the hot liquid tank (201). The outlet of the liquid flow meter (204) is connected to the inlet of the particle chamber (205). The particle chamber (205) is connected to the inlet of the first liquid filter (206). The outlet of the first liquid filter (206) is connected to the inlet of the liquid side channel (100B) of the device to be tested (100). The outlet of the liquid side channel (100B) of the device to be tested is connected to the inlet of the second liquid filter 207. The outlet of the second liquid filter (207) is connected to the inlet of the liquid cooler (208). The outlet of the liquid cooler (208) is connected to the inlet of the cold liquid tank (209). The outlet of the cold liquid tank (209) is connected to the inlet of the cold liquid pump (210). The outlet of the cold liquid pump (210) is connected to the self-circulating heating branch.

2. A comprehensive performance testing system for a gas energy storage system heat exchange device according to claim 1, wherein: The buffer tank (101) is provided with a pressure sensor (18), a valve A (3) is provided on the first inlet pipeline, and a valve B (4) is provided on the pipeline connecting the first outlet and the inlet of the humidifier (102).

3. A comprehensive performance testing system for a gas energy storage system heat exchange device according to claim 1, wherein: The pipeline connecting the first branch inlet and the gas heater (104) inlet is provided with a valve C (5), and the pipeline connecting the second branch inlet and the first gas cooler (105) inlet is provided with a valve D (6).

4. A comprehensive performance testing system for a gas energy storage system heat exchange device according to claim 1, wherein: A temperature sensor A (13) and a pressure sensor A (18) are provided on the pipeline connecting the outlet of the gas filter (107) and the inlet of the gas side channel (100) A of the device to be tested (100), and a temperature sensor B (14) and a pressure sensor B (19) are provided on the pipeline connecting the outlet of the gas side channel (100) A of the device to be tested and the inlet of the gas flow meter (109).

5. A comprehensive performance testing system for a gas energy storage system heat exchange device according to claim 1, wherein: The regulating branch is provided with a regulating valve (108).

6. A comprehensive performance testing system for a gas energy storage system heat exchange device according to claim 1, wherein: A pressure reducing valve (112) is provided on the pipeline connecting the outlet of the second gas cooler (111) and the second inlet of the buffer tank (101), and a valve E (7) is provided on the pipeline connecting the second outlet of the buffer tank (101) and the inlet of the vacuum pump (113).

7. A comprehensive performance testing system for a gas energy storage system heat exchange device according to claim 1, wherein: The hot liquid tank (201) is provided with a temperature sensor C (15), and a valve F (8) is provided on the pipeline connecting the outlet of the hot liquid tank (201) and the inlet of the hot liquid pump (202).

8. A comprehensive performance testing system for a gas energy storage system heat exchange device according to claim 1, wherein: A valve G (9) is provided on the inlet pipe of the liquid heater (203) of the self-circulating heating branch; and a valve H (10) is provided on the inlet pipe of the liquid flow meter (204) of the liquid measuring branch.

9. A comprehensive performance testing system for a gas energy storage system heat exchange device according to claim 1, wherein: A temperature sensor D (16) and a pressure sensor D (21) are provided on a pipeline connecting the outlet of the first liquid filter (206) and the inlet of the liquid side channel (100) B of the device to be tested (100), and a temperature sensor E (17) and a pressure sensor E (22) are provided on a pipeline connecting the outlet of the liquid side channel (100) B of the device to be tested and the inlet of the second liquid filter (207).

10. A comprehensive performance testing system for a gas energy storage system heat exchange device according to claim 1, wherein: A valve I (11) is provided on the pipeline connecting the outlet of the cold liquid tank (209) and the inlet of the cold liquid pump (210), and a valve J (12) is provided on the pipeline connecting the outlet of the cold liquid pump (210) and the self-circulating heating branch.

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