Combined energy system of green liquid cooling data center

Abstract

The invention belongs to the technical field of heat energy power, and discloses a combined energy system of a green liquid cooling data center, which comprises a liquid cooling subsystem, a heat pump subsystem, an energy storage compression cooling subsystem, an energy storage expansion heating subsystem, an organic Rankine cycle power generation subsystem, an absorption refrigeration subsystem and a heat supply subsystem. Heat generated by the heat pump subsystem and compression heat generated by the energy storage compression cooling subsystem are coupled and stored in the high-temperature water tank, and the collected heat is distributed to the energy storage expansion heating subsystem, the organic Rankine cycle power generation subsystem, the absorption type refrigeration subsystem and the heat supply subsystem according to needs. The system is used for generating electric power, cold energy and heat energy respectively and providing the electric power, the cold energy and the heat for the data center and surrounding users, thereby reducing operation cost of the data center and realizing efficient utilization of energy of the data center.

Description

Technical Field

[0001] The present invention belongs to the field of thermal power technology, and in particular relates to a combined energy system for a green liquid cooling data center. Background Art

[0002] With the continuous development of network technology and the accelerating process of informatization, the construction of large-scale server clusters such as data centers has developed rapidly, and the energy consumption problem has become increasingly serious. According to statistics, only about 15-20% of the power consumption of a data center is used for computing and data transmission, while the remaining 80-85% of the power is consumed by various devices and converted into heat energy.

[0003] In order to ensure that the server works at normal operating temperature, cooling technology must be used to cool the data room. As data centers develop towards higher density, traditional air cooling technology is gradually unable to meet their heat dissipation and energy saving needs. Therefore, data center cooling technology is gradually shifting to liquid cooling technology. In addition, in traditional cooling technology, the medium that carries the waste heat of the data center (such as air, water, etc.) usually discharges the heat directly into the atmosphere, resulting in a large amount of heat energy not being effectively utilized. From another perspective, data centers operate continuously around the clock, and the heat generated is large and stable. If this waste heat can be recycled, it will significantly improve the energy efficiency of the data center and help reduce its carbon emission pressure.

[0004] In the existing technical solutions, the waste heat of the data center is usually used in combination with the heat network. For example, patent CN205299850U discloses a data center waste heat recovery system, which not only provides cooling for the data center, but also provides domestic hot water and heating heat for users of buildings around the data center. Another patent, CN117615548A, uses a heat pump unit to stably transport the heat extracted from the data center to the heat user-side equipment, thereby realizing the recovery and reuse of waste heat in the data center. In addition, some patents also explore the possibility of generating electricity from waste heat from data centers. For example, patent CN117387412A uses a compressed CO2 energy storage system to convert the waste heat of a liquid-cooled data center into electricity and supply power to the data center, thereby achieving peak shaving and valley filling of the power grid.

[0005] Although existing technologies have made some progress in the recovery and utilization of waste heat in data centers, there are still many shortcomings. Most technical solutions only achieve a single function, such as using waste heat from data centers for heating or power generation, and lack the ability to make comprehensive multi-functional use, resulting in low overall energy efficiency. In addition, the integration of existing systems is generally low, and each subsystem often operates independently, failing to achieve overall optimization of the system and maximize energy utilization. At the same time, existing technologies lack sufficient flexibility and adaptability when dealing with seasonal changes and fluctuations in load demand. Summary of the invention

[0006] In view of the above problems, the present invention provides a combined energy system for a green liquid cooling data center, which adopts the following technical solutions:

[0007] A combined energy system for a green liquid cooling data center, comprising:

[0008] A liquid cooling subsystem is used to absorb the heat of the data center and cool the data center;

[0009] The heat pump subsystem is used to absorb the heat of the data center, heat the water in the low-temperature water tank, and then transfer it to the high-temperature water tank for storage;

[0010] The energy storage compression cooling subsystem is used to utilize the heat of the compressed air to heat the water in the low-temperature water tank and then transfer it to the high-temperature water tank for storage, and store the compressed air in the high-pressure air storage chamber;

[0011] The energy storage expansion heating subsystem is used to heat the compressed air released from the high-pressure air storage chamber using the heat of the hot water in the high-temperature water tank, generate electrical energy driven by the heated compressed air, and transport the water that has absorbed heat to the low-temperature water tank;

[0012] Organic Rankine cycle power generation subsystem, used to convert the heat of hot water in the high-temperature water tank into electrical energy and transport the water that has absorbed heat to the low-temperature water tank;

[0013] The absorption refrigeration subsystem is used to convert the heat of hot water in the high-temperature water tank into cold water to provide cooling to users, and transport the water with absorbed heat to the low-temperature water tank;

[0014] The heating subsystem is used to utilize the heat energy in the high-temperature water tank to heat the heating network and transport the water that has absorbed heat to the low-temperature water tank.

[0015] Further, the liquid cooling subsystem includes a coolant pump and a cooling heat exchanger;

[0016] Among them, the inlet of the coolant pump is connected to the outlet of the data center, the outlet of the coolant pump is connected to the inlet of the cooling heat exchanger and the coolant inlet of the heat pump subsystem, and the outlet of the cooling heat exchanger and the coolant outlet of the heat pump subsystem are both connected to the inlet of the data center.

[0017] Further, the liquid cooling subsystem also includes a fan, a first valve and a second valve;

[0018] Wherein, the fan is arranged on one side of the cooling heat exchanger, the first valve is arranged between the outlet of the coolant pump and the liquid inlet of the cooling heat exchanger, and the second valve is arranged between the outlet of the coolant pump and the coolant inlet of the heat pump subsystem.

[0019] Further, the heat pump subsystem includes a first evaporator, a compressor, a first motor, a first condenser and a first throttle valve;

[0020] Among them, the output shaft of the first motor is drivingly connected to the compressor, the air inlet of the compressor is connected to the heat exchange medium outlet of the first evaporator, the air outlet of the compressor is connected to the heat exchange medium inlet of the first condenser, the heat exchange medium outlet of the first condenser is connected to the first throttle valve and the heat exchange medium inlet of the first evaporator in sequence; the water inlet of the first condenser is connected to the low-temperature water pump and the water outlet of the low-temperature water tank in sequence; the water outlet of the first condenser is connected to the water inlet of the high-temperature water tank.

[0021] Further, the energy storage compression cooling subsystem includes a multi-stage compressor and a second motor connected in series;

[0022] Wherein, the output shaft of the second motor is drivingly connected to the multi-stage air compressor; an intercooler is arranged between two adjacent air compressors and between the last air compressor and the high-pressure air storage chamber; the air inlet of the intercooler between two adjacent air compressors is connected to the air outlet of the previous air compressor, the air outlet of the intercooler between two adjacent air compressors is connected to the air inlet of the next air compressor, the air outlet of the last air compressor is connected to the air inlet of the last intercooler, and the air inlet of the high-pressure air storage chamber is connected to the air outlet of the last intercooler;

[0023] The water inlet of each intercooler is connected with the low-temperature water pump and the water outlet of the low-temperature water tank in sequence, and the water outlet of each intercooler is connected with the water inlet of the high-temperature water tank.

[0024] Further, the energy storage expansion heating subsystem includes a multi-stage series-connected turbine and a first generator;

[0025] Wherein, the multi-stage series turbine is drivingly connected to the first generator; a reheater is arranged between the high-pressure air storage chamber and the first-stage turbine, and between two adjacent-stage turbines; the air inlet of the reheater between two adjacent-stage turbines is connected to the air outlet of the previous-stage turbine, the air outlet of the reheater between two adjacent-stage turbines is connected to the air inlet of the next-stage turbine, the air outlet of the high-pressure air storage chamber is connected to the air inlet of the first reheater, and the air inlet of the first-stage turbine is connected to the air outlet of the first reheater;

[0026] The water inlet of each reheater is connected with the high-temperature water pump and the water outlet of the high-temperature water tank in sequence; the water outlet of each reheater is connected with the water inlet of the low-temperature water tank.

[0027] Further, the organic Rankine cycle power generation subsystem includes a second evaporator, an expander, a second generator, a second condenser, a working fluid pump, a cooling water pump and a cooling tower;

[0028] Wherein, the water inlet of the second evaporator is connected with the high-temperature water pump and the water outlet of the high-temperature water tank in sequence, the water outlet of the second evaporator is connected with the water inlet of the low-temperature water tank, the heat exchange medium outlet of the second evaporator is connected with the heat exchange medium inlet of the expander, the heat exchange medium outlet of the expander is connected with the heat exchange medium inlet of the second condenser, the heat exchange medium outlet of the second condenser is connected with the working medium pump and the heat exchange medium inlet of the second evaporator in sequence; the expander is drivingly connected with the second generator;

[0029] The water inlet of the second condenser is communicated with the outlet of the cooling water pump, the inlet of the cooling water pump is communicated with the water outlet of the cooling tower, and the water inlet of the cooling tower is communicated with the water outlet of the second condenser.

[0030] Further, the absorption refrigeration subsystem includes a generator, a solution heat exchanger, a solution pump, a second throttle valve, an absorber, a third condenser, a third throttle valve and a third evaporator;

[0031] The water inlet of the generator is connected to the high-temperature water pump and the water outlet of the high-temperature water tank in sequence, the water outlet of the generator is connected to the water inlet of the low-temperature water tank, the heat exchange medium inlet of the generator is connected to the first outlet of the solution heat exchanger, the heat exchange medium outlet of the generator is connected to the first inlet of the solution heat exchanger, and the steam outlet of the generator is connected to the steam inlet of the third condenser;

[0032] The second inlet of the solution heat exchanger is connected to the outlet of the solution pump, the inlet of the solution pump is connected to the heat exchange medium outlet of the absorber, the second outlet of the solution heat exchanger is connected to the heat exchange medium inlet of the absorber through the second throttle valve; the water outlet of the third condenser is connected to the water inlet of the third evaporator through the third throttle valve, and the steam outlet of the third evaporator is connected to the air inlet of the absorber.

[0033] Further, the heating subsystem includes a heating water pump and a heating heat exchanger;

[0034] Among them, the water inlet of the heating heat exchanger is connected with the high-temperature water pump and the water outlet of the high-temperature water tank in sequence, the water outlet of the heating heat exchanger is connected with the water inlet of the low-temperature water tank, the heat exchange medium inlet of the heating heat exchanger is connected with the outlet of the hot water supply pump, the inlet of the hot water supply pump is connected with the outlet of the heating pipe network, and the heat exchange medium outlet of the heating heat exchanger is connected with the inlet of the heating pipe network.

[0035] Furthermore, the heat pump subsystem further includes a third valve, and the third valve is arranged between the water inlet of the first condenser and the outlet of the low-temperature water pump.

[0036] Furthermore, the energy storage compression cooling subsystem also includes a fourth valve, and the fourth valve is arranged between the water inlets of all intercoolers and the outlet of the low-temperature water pump.

[0037] Furthermore, the energy storage expansion heating subsystem also includes a fifth valve and a sixth valve, the fifth valve being arranged between the air outlet of the high-pressure air storage chamber and the air inlet of the first reheater, and the sixth valve being arranged between the water outlet of the high-temperature water pump and the water inlets of all reheaters.

[0038] Furthermore, the organic Rankine cycle power generation subsystem includes a seventh valve and an eighth valve, the seventh valve is arranged between the water inlet of the second evaporator and the water outlet of the high-temperature water pump, and the eighth valve is arranged between the water inlet of the second condenser and the outlet of the cooling water pump.

[0039] Furthermore, the absorption refrigeration subsystem includes a ninth valve, and the ninth valve is arranged between the water inlet of the generator and the outlet of the high-temperature water pump.

[0040] Furthermore, the heating subsystem includes a tenth valve and an eleventh valve, the tenth valve is arranged between the water inlet of the heating heat exchanger and the outlet of the high-temperature water pump, and the eleventh valve is arranged between the heat exchange medium inlet of the heating heat exchanger and the outlet of the hot water pump.

[0041] Beneficial effects of the present invention:

[0042] 1. The present invention couples the heat generated by the heat pump subsystem and the compression heat generated by the energy storage compression cooling subsystem, and stores them in a high-temperature water tank. The collected heat is distributed to the energy storage expansion heating subsystem, the organic Rankine cycle power generation subsystem, the absorption refrigeration subsystem and the heating subsystem as needed to generate electricity, cooling and heat respectively, which are provided to the data center and surrounding users, which not only reduces the operating cost of the data center, but also realizes the efficient use of the energy of the data center.

[0043] 2. The present invention helps alleviate the urban heat island effect by recycling the waste heat of the liquid-cooled data center instead of directly discharging it into the atmosphere. At the same time, the introduction of compressed air energy storage can effectively solve the problem of output volatility of renewable energy such as solar energy and wind energy, promote the application of renewable energy in data centers 11, and promote the development of green data centers 11.

[0044] 3. During the off-peak period, the present invention consumes off-peak electricity to operate the energy storage compression cooling subsystem to generate compression heat and store it in a high-temperature water tank; during the peak period, the energy storage expansion heating subsystem and the organic Rankine cycle power generation subsystem are operated to convert the heat energy stored in the high-temperature water tank into electrical energy to supply power to the data center. Therefore, the system can reduce the electricity cost of the data center during peak periods. In addition, the system can also serve as a backup power supply for the data center to ensure the uninterrupted and safe operation of the data center.

[0045] 4. The heat energy generated by the heat pump subsystem and the energy storage compression cooling subsystem of the present invention is stored together in the high-temperature water tank, and the heat energy in the high-temperature water tank is distributed to each subsystem as needed, thereby improving the energy utilization efficiency of the system. In addition, since the heat pump subsystem operates around the clock and continuously provides heat to the high-temperature water tank, it ensures that the energy storage expansion heating subsystem has sufficient hot water supply at any time. This avoids system performance degradation or operation interruption caused by insufficient hot water supply, and significantly improves the stability and reliability of the system.

[0046] 5. The present invention can flexibly switch between power generation, cooling and heating modes according to actual needs. Through the coordinated work of the energy storage expansion heating subsystem, the organic Rankine cycle power generation subsystem, the absorption cooling subsystem and the heating subsystem, the system can provide the required energy services in different usage scenarios, thus improving the adaptability and flexibility of the system.

[0047] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 A schematic diagram of the structure of a combined energy system for a green liquid cooling data center according to an embodiment of the present invention is shown;

[0050] Figure 2 A schematic structural diagram of a heat pump subsystem according to an embodiment of the present invention is shown;

[0051] Figure 3 A schematic structural diagram of an energy storage compression cooling subsystem according to an embodiment of the present invention is shown;

[0052] Figure 4 It shows a schematic structural diagram of an energy storage expansion heating subsystem according to an embodiment of the present invention;

[0053] Figure 5 A schematic diagram of the structure of an organic Rankine cycle power generation subsystem according to an embodiment of the present invention is shown;

[0054] Figure 6 A structural schematic diagram of an absorption refrigeration subsystem according to an embodiment of the present invention is shown.

[0055] In the figure: 1. Liquid cooling subsystem; 2. Heat pump subsystem; 3. Energy storage compression cooling subsystem; 4. High-pressure gas storage chamber; 5. Energy storage expansion heating subsystem; 6. Organic Rankine cycle power generation subsystem; 7. Absorption refrigeration subsystem; 8. Heating subsystem;

[0056] 11. Data center; 12. Coolant pump; 13. First valve; 14. Cooling heat exchanger; 15. Fan; 16. Second valve;

[0057] 21. third valve; 22. first evaporator; 23. compressor; 24. first motor; 25. first condenser; 26. first throttle valve;

[0058] 31. Fourth valve; 32. Second motor; 33. Low-pressure air compressor; 34. Low-pressure intercooler; 35. Medium-pressure air compressor; 36. Medium-pressure intercooler; 37. High-pressure air compressor; 38. High-pressure intercooler;

[0059] 41. Fifth valve; 51. Sixth valve; 52. High-pressure reheater; 53. High-pressure turbine; 54. Medium-pressure reheater; 55. Medium-pressure turbine; 56. Low-pressure reheater; 57. Low-pressure turbine; 58. First generator;

[0060] 61. The seventh valve; 62. The second evaporator; 63. The expander; 64. The second generator; 65. The second condenser; 66. The working fluid pump; 67. The eighth valve; 68. The cooling water pump; 69. The cooling tower;

[0061] 71. ninth valve; 72. generator; 73. solution heat exchanger; 74. solution pump; 75. second throttle valve; 76. absorber; 77. third condenser; 78. third throttle valve; 79. third evaporator;

[0062] 81. The tenth valve; 82. The hot water pump; 83. The eleventh valve; 84. The heating heat exchanger; 91. The low-temperature water tank; 92. The low-temperature water pump; 101. The high-temperature water tank; 102. The high-temperature water pump. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0064] It should be noted that the terms "first", "second", etc. in the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0065] The present invention provides a combined energy system for a green liquid-cooled data center, which utilizes liquid cooling technology to recycle waste heat from the data center, thereby avoiding energy waste. By coupling heat pumps, compressed air energy storage, organic Rankine cycles, absorption refrigeration and heating technologies, waste heat can be converted into electricity, heat and cold to meet the various energy needs of data centers and users of surrounding buildings. In addition, the waste heat temperature can be increased by heat pumps during low-power periods, and coupled with the heat obtained from compressed air energy storage to release electricity during peak power consumption periods, thereby achieving peak shaving and valley filling of the power grid and reducing the operating costs of data centers. In addition, data centers coupled with energy storage are conducive to combining with renewable energy sources to further promote the application of green energy.

[0066] like Figure 1 As shown, a combined energy system of a green liquid-cooled data center 11 includes a liquid cooling subsystem 1, a heat pump subsystem 2, an energy storage compression cooling subsystem 3, an energy storage expansion heating subsystem 5, an organic Rankine cycle power generation subsystem 6, an absorption refrigeration subsystem 7 and a heating subsystem 8.

[0067] The liquid cooling subsystem 1 is used to absorb the heat of the data center 11 and cool the data center 11. The liquid cooling subsystem 1 is used to recover the waste heat of the data center 11. The data center 11 uses liquid cooling technology to cool the server. The coolant is a fluorinated liquid. After heat exchange with the server, the coolant temperature can reach 60-70°C.

[0068] The heat pump subsystem 2 is used to absorb the heat of the data center 11, heat the water in the low-temperature water tank 91, and then transport it to the high-temperature water tank 101 for storage. The heat pump subsystem 2 uses the waste heat generated by the liquid-cooled data center 11, and raises the waste heat from 60-70°C to 120-150°C through the heat exchange medium and stores it in the high-temperature water tank 101. The heat pump subsystem 2 ensures that the waste heat of the liquid-cooled data center 11 is recovered and stored in the high-temperature water tank 101 around the clock.

[0069] The energy storage compression cooling subsystem 3 is used to compress the air, use the heat of the compressed air to heat the water in the low-temperature water tank 91 and then transfer it to the high-temperature water tank 101 for storage, and store the compressed air in the high-pressure air storage chamber 4.

[0070] During the off-peak period, the energy storage compression cooling subsystem 3 uses the off-peak electricity to compress the air and store it in the high-pressure air storage chamber 4. During the compression process, the air temperature rises, and the compression heat generated is also in the temperature range of 120-150°C. The compression heat is stored in the high-temperature water tank 101 in the form of hot water and mixed with the hot water stored in the heat pump subsystem 2. The energy storage compression cooling subsystem 3 effectively converts the off-peak electricity into air pressure energy and thermal energy, which are stored in the system for standby use.

[0071] The energy storage expansion heating subsystem 5 is used to heat the compressed air released from the high-pressure air storage chamber 4 using the heat of the hot water in the high-temperature water tank 101 , generate electrical energy driven by the heated compressed air, and transport the water that has absorbed the heat to the low-temperature water tank 91 .

[0072] During the peak power period, when power supply is needed, the energy storage expansion heating subsystem 5 uses the compressed air released by the high-pressure air storage chamber 4 and the heat energy in the high-temperature water tank 101 to generate electricity for use. In this way, the peak power consumption of the data center 11 can be effectively reduced, thereby reducing the power cost of the data center 11.

[0073] The organic Rankine cycle power generation subsystem 6 is used to convert the heat of the hot water in the high-temperature water tank 101 into electrical energy, and transport the water that has absorbed the heat to the low-temperature water tank 91. During the peak power period, the organic Rankine cycle power generation subsystem 6 absorbs the heat energy in the high-temperature water tank 101 through the organic working fluid, and drives the expander 63 to generate electricity. The heat energy is converted into electrical energy output, further increasing the power generation of the system.

[0074] The absorption refrigeration subsystem 7 is used to convert the heat of hot water in the high-temperature water tank 101 into cold energy to provide cooling to users, and transport the water that has absorbed heat to the low-temperature water tank 91. When users in buildings around the data center 11 have cooling needs, the absorption refrigeration subsystem 7 is driven by the heat energy in the high-temperature water tank 101 to meet the cooling needs of users.

[0075] The heating subsystem 8 is used to use the heat energy in the high-temperature water tank 101 to heat the heating pipe network, and transport the water that has absorbed heat to the low-temperature water tank 91. When users in buildings around the data center 11 have heating needs, the heating subsystem 8 transfers the heat energy in the high-temperature water tank 101 to the surrounding heating pipe network to ensure the effective transmission of high-temperature heat energy to meet the heating needs of users in buildings around the data center 11.

[0076] Through the coordinated work of the above subsystems, the present invention constructs a highly efficient green liquid cooling data center 11 joint energy system. By coupling and storing the heat energy of the heat pump subsystem 2 and the energy storage compression cooling subsystem 3, the overall heat energy recovery efficiency of the system is significantly improved. The heat energy stored in the high-temperature water tank 101 is first distributed to the energy storage expansion heating subsystem 5, and by converting the heat energy in the high-temperature water tank 101 into electrical energy, it is ensured that the system can provide stable electricity during peak hours.

[0077] In addition, the organic Rankine cycle power generation subsystem 6 generates electricity by absorbing the heat energy in the high-temperature water tank 101 through an organic heat exchange medium, further increasing the power generation of the system. The absorption refrigeration subsystem 7 uses the heat energy in the high-temperature water tank 101 to drive the absorption refrigeration cycle to generate cold energy to meet the cooling needs of the buildings around the data center 11. In terms of heating, the heating subsystem 8 transfers the heat energy in the high-temperature water tank 101 to the heating network to provide stable and reliable heat energy to meet the heating needs of users in the buildings around the data center 11. Through the coordinated operation of each subsystem, the present invention achieves efficient recovery of waste heat and multi-energy complementarity, significantly improves energy utilization efficiency, and promotes the application and sustainable development of green energy.

[0078] like Figure 1 As shown, for example, the liquid cooling subsystem 1 includes a cooling liquid pump 12, a first valve 13, a cooling heat exchanger 14, a fan 15 and a second valve 16, wherein the inlet of the cooling liquid pump 12 is connected to the liquid outlet of the data center 11, the outlet of the cooling liquid pump 12 is connected to the liquid inlet of the cooling heat exchanger 14 and the cooling liquid inlet of the heat pump subsystem 2, and the liquid outlet of the cooling heat exchanger 14 and the cooling liquid outlet of the heat pump subsystem 2 are both connected to the liquid inlet of the data center 11. The fan 15 is arranged on one side of the cooling heat exchanger 14, and the fan 15 is used to introduce a natural cold source to reduce the temperature of the cooling liquid flowing through the cooling heat exchanger 14.

[0079] The first valve 13 is disposed between the outlet of the coolant pump 12 and the liquid inlet of the cooling heat exchanger 14 , and the second valve 16 is disposed between the outlet of the coolant pump 12 and the coolant inlet of the heat pump subsystem 2 .

[0080] The coolant first flows through the data center 11 to absorb the heat generated by the server. After passing through the outlet of the coolant pump 12, the coolant is divided into two paths, and the flow direction of each branch is controlled by the first valve 13 and the second valve 16. One path of the coolant flows through the cooling heat exchanger 14 for heat dissipation. The fan 15 introduces a natural cold source by blowing air to reduce the temperature of the coolant flowing through the cooling heat exchanger 14. This path is only used to provide a backup heat dissipation function for the data center 11 when the heat pump subsystem 2 fails or shuts down; the other path of the coolant enters the first evaporator 22 of the heat pump subsystem 2, exchanges heat with the working fluid in the heat pump subsystem 2, and provides heat for the heat pump subsystem 2.

[0081] like Figure 1 and Figure 2 As shown, for example, the heat pump subsystem 2 further includes a third valve 21 , a first evaporator 22 , a compressor 23 , a first motor 24 , a first condenser 25 and a first throttle valve 26 .

[0082] Among them, the output shaft of the first motor 24 is drivingly connected to the compressor 23, consuming electrical energy to drive the compressor 23 to work, the air inlet of the compressor 23 is connected to the heat exchange medium outlet of the first evaporator 22, the air outlet of the compressor 23 is connected to the heat exchange medium inlet of the first condenser 25, the heat exchange medium outlet of the first condenser 25 is connected to the first throttle valve 26 and the heat exchange medium inlet of the first evaporator 22 in sequence; the water inlet of the first condenser 25 is connected to the outlet of the low-temperature water pump 92, and the inlet of the low-temperature water pump 92 is connected to the water outlet of the low-temperature water tank 91; the water outlet of the first condenser 25 is connected to the water inlet of the high-temperature water tank 101, and the third valve 21 is arranged between the water inlet of the first condenser 25 and the outlet of the low-temperature water pump 92.

[0083] When the heat pump subsystem 2 is running, the third valve 21 is opened, and the heat exchange working fluid absorbs the heat of the coolant of the data center 11 in the first evaporator 22, while releasing the cold. Subsequently, the evaporated heat exchange working fluid enters the compressor 23 for compression to generate a high-temperature and high-pressure heat exchange working fluid. The compressed heat exchange working fluid then flows into the first condenser 25 to release heat. Finally, the heat exchange working fluid is depressurized by the first throttle valve 26 to complete the heat pump cycle. At the same time, the pressurized water stored in the low-temperature water tank 91 is transported to the first condenser 25 by the low-temperature water pump 92, where it absorbs the heat released by the heat exchange working fluid. Subsequently, the pressurized water with increased temperature flows into the high-temperature water tank 101 for storage.

[0084] like Figure 1 and Figure 3 As shown, for example, the energy storage compression cooling subsystem 3 includes a multi-stage series-connected air compressor, a second motor 32 and a fourth valve 31, and the output shaft of the second motor 32 is connected to the multi-stage air compressor drive; intercoolers are provided between two adjacent air compressors, and between the last air compressor and the high-pressure air storage chamber 4; the air inlet of the intercooler between two adjacent air compressors is connected to the air outlet of the previous air compressor, the air outlet of the intercooler between two adjacent air compressors is connected to the air inlet of the next air compressor, the air outlet of the last air compressor is connected to the air inlet of the last intercooler, and the air inlet of the high-pressure air storage chamber 4 is connected to the air outlet of the last intercooler.

[0085] The water inlet of each intercooler is connected to the water outlet of the low-temperature water pump 92 , and the water outlet of each intercooler is connected to the water inlet of the high-temperature water tank 101 ; the fourth valve 31 is arranged between the water inlet of all intercoolers and the outlet of the low-temperature water pump 92 .

[0086] The number of air compressor stages and intercoolers in the energy storage compression cooling subsystem 3 can be adjusted according to actual needs, such as Figure 3 As shown, for example, a multi-stage series air compressor includes a low-pressure air compressor 33, a medium-pressure air compressor 35 and a high-pressure air compressor 37 connected in series, the output shaft of the second motor 32 is drivingly connected to the low-pressure air compressor 33, the medium-pressure air compressor 35 and the high-pressure air compressor 37, a low-pressure intercooler 34 is arranged between the low-pressure air compressor 33 and the medium-pressure air compressor 35, an medium-pressure intercooler 36 is arranged between the medium-pressure air compressor 35 and the high-pressure compressor, and a high-pressure intercooler 38 is arranged at the air outlet of the high-pressure air compressor 37.

[0087] When the power consumption is low, the fourth valve 31 is opened, and the energy storage compression cooling subsystem 3 starts to operate. The air first enters the low-pressure air compressor 33 driven by the motor for the first stage of compression. The compressed high-temperature air enters the low-pressure intercooler 34, and heat exchanges with the pressurized water flowing out of the low-temperature water tank 91. The cooled air enters the medium-pressure air compressor 35 for the second stage of compression. The high-temperature air after the second compression enters the medium-pressure intercooler 36, and heat exchanges with the pressurized water again. The cooled air enters the high-pressure air compressor 37 for the third stage of compression. Finally, the high-temperature air after the third compression enters the high-pressure intercooler 38, and the compressed heat is absorbed by the pressurized water. The cooled high-pressure air is stored in the high-pressure air storage chamber 4. At the same time, the pressurized water stored in the low-temperature water tank 91 is transported to the high-, medium-, and low-pressure intercoolers 34 by the low-temperature water pump 92, where it absorbs the compression heat of the air. Subsequently, the pressurized water with increased temperature flows into the high-temperature water tank 101 for storage.

[0088] like Figure 1 and Figure 4 As shown, for example, the energy storage expansion heating subsystem 5 includes a multi-stage turbine connected in series, a first generator 58, a fifth valve 41 and a sixth valve 51. The multi-stage turbine connected in series is driven and connected to the first generator 58. Reheaters are provided between the high-pressure air storage chamber 4 and the first-stage turbine, and between two adjacent turbines. The air inlet of the reheater between two adjacent turbines is connected to the air outlet of the previous turbine, and the air outlet of the reheater between two adjacent turbines is connected to the air inlet of the next turbine. The air outlet of the high-pressure air storage chamber 4 is connected to the air inlet of the first reheater, and the air inlet of the first turbine is connected to the air outlet of the first reheater.

[0089] The water inlet of each reheater is connected to the water outlet of the high-temperature water pump 102, and the water inlet of the high-temperature water pump 102 is connected to the water outlet of the high-temperature water tank 101; the water outlet of each reheater is connected to the water inlet of the low-temperature water tank 91. The fifth valve 41 is arranged between the air outlet of the high-pressure air storage chamber 4 and the air inlet of the first reheater, and the sixth valve 51 is arranged between the water outlet of the high-temperature water pump 102 and the water inlets of all reheaters.

[0090] The number of turbine stages and reheaters in the energy storage expansion heating subsystem 5 can be adjusted according to actual needs, such as Figure 4 As shown, for example, a multi-stage series-connected turbine includes a high-pressure turbine 53, a medium-pressure turbine 55 and a low-pressure turbine 57, a high-pressure reheater 52 is arranged between the high-pressure air storage chamber 4 and the high-pressure turbine 53, a medium-pressure reheater 54 is arranged between the high-pressure turbine 53 and the medium-pressure turbine 55, and a low-pressure reheater 56 is arranged between the medium-pressure turbine 55 and the low-pressure turbine 57.

[0091] When the electricity consumption is at peak, the sixth valve 51 is opened, and the energy storage expansion and heating subsystem 5 starts to operate. At this time, the fifth valve 41 is opened, and the high-pressure air stored in the high-pressure air storage chamber 4 first enters the high-pressure reheater 52, and is heated by the pressurized water pumped from the high-temperature water tank 101. The heated high-temperature and high-pressure air enters the high-pressure turbine 53 for the first expansion, drives the first generator 58 to generate electricity, and provides electricity for the load. The expanded medium-pressure air then enters the medium-pressure reheater 54, and heat exchanges with the pressurized water pumped from the high-temperature water tank 101 again, so that the air temperature rises again. The heated high-temperature medium-pressure air enters the medium-pressure turbine 55 for the second expansion and drives the first generator 58 to generate electricity. The low-pressure air after the second expansion enters the low-pressure reheater 56, and is heated for the last time by the pressurized water pumped from the high-temperature water tank 101. The heated high-temperature and low-pressure air enters the low-pressure turbine 57 for the third expansion, drives the first generator 58 to generate electricity, and finally completes the power output. At the same time, the pressurized water stored in the high temperature water tank 101 is transported to the high, medium and low pressure reheaters 56 by the high temperature water pump 102, where it releases heat energy to preheat the compressed air. Subsequently, the pressurized water with reduced temperature flows into the low temperature water tank 91 for storage.

[0092] like Figure 1 and Figure 5 As shown, for example, the organic Rankine cycle power generation subsystem 6 includes a seventh valve 61 , a second evaporator 62 , an expander 63 , a second generator 64 , a second condenser 65 , a working fluid pump 66 , an eighth valve 67 , a cooling water pump 68 and a cooling tower 69 .

[0093] The water inlet of the second evaporator 62 is connected to the water outlet of the high-temperature water pump 102, the water outlet of the second evaporator 62 is connected to the water inlet of the low-temperature water tank 91, the heat exchange medium outlet of the second evaporator 62 is connected to the heat exchange medium inlet of the expander 63, the heat exchange medium outlet of the expander 63 is connected to the heat exchange medium inlet of the second condenser 65, the heat exchange medium outlet of the second condenser 65 is connected to the working fluid pump 66 and the heat exchange medium inlet of the second evaporator 62 in sequence; the expander 63 is drivingly connected to the second generator 64, and the expander 63 is used to drive the second generator 64 to generate electricity.

[0094] The water inlet of the second condenser 65 is connected to the outlet of the cooling water pump 68, the inlet of the cooling water pump 68 is connected to the outlet of the cooling tower 69, and the water inlet of the cooling tower 69 is connected to the water outlet of the second condenser 65; the seventh valve 61 is arranged between the water inlet of the second evaporator 62 and the water outlet of the high-temperature water pump 102, and the eighth valve 67 is arranged between the water inlet of the second condenser 65 and the outlet of the cooling water pump 68.

[0095] When the electricity consumption is at peak hours, the seventh valve 61 and the eighth valve 67 are opened, and the organic Rankine cycle power generation subsystem 6 starts to operate. The organic working fluid is driven by the working fluid pump 66 and first flows into the second evaporator 62, absorbing the heat of the pressurized water pumped from the high-temperature water tank 101 to increase its temperature. The high-temperature working fluid then enters the expander 63 for expansion, driving the second generator 64 to output stable electric energy. Subsequently, the expanded working fluid enters the second condenser 65, exchanges heat with the cooling water drawn from the cooling tower 69 by the cooling water pump 68, and cools down to complete the organic Rankine cycle. At the same time, the pressurized water stored in the high-temperature water tank 101 is transported to the second evaporator 62 by the high-temperature water pump 102, where heat energy is released to evaporate the organic working fluid. Subsequently, the pressurized water with a reduced temperature flows into the low-temperature water tank 91 for storage.

[0096] like Figure 1 and Figure 6 As shown, for example, the absorption refrigeration subsystem 7 includes a ninth valve 71 , a generator 72 , a solution heat exchanger 73 , a solution pump 74 , a second throttle valve 75 , an absorber 76 , a third condenser 77 , a third throttle valve 78 and a third evaporator 79 .

[0097] The water inlet of the generator 72 is connected to the outlet of the high-temperature water pump 102, the water outlet of the generator 72 is connected to the water inlet of the low-temperature water tank 91, the heat exchange medium inlet of the generator 72 is connected to the first outlet of the solution heat exchanger 73, the heat exchange medium outlet of the generator 72 is connected to the first inlet of the solution heat exchanger 73, and the steam outlet of the generator 72 is connected to the steam inlet of the third condenser 77.

[0098] The second inlet of the solution heat exchanger 73 is connected to the outlet of the solution pump 74, the inlet of the solution pump 74 is connected to the heat exchange medium outlet of the absorber 76, and the second outlet of the solution heat exchanger 73 is connected to the heat exchange medium inlet of the absorber 76 through the second throttle valve 75; the water outlet of the third condenser 77 is connected to the water inlet of the third evaporator 79 through the third throttle valve 78, and the steam outlet of the third evaporator 79 is connected to the air inlet of the absorber 76.

[0099] The ninth valve 71 is arranged between the water inlet of the generator 72 and the outlet of the high-temperature water pump 102, the cooling water inlet and cooling water outlet of the third condenser 77 are connected to the external cooling water pipeline, the cooling water inlet and cooling water outlet of the third evaporator 79 are connected to the external cooling water pipeline; the cooling water inlet and cooling water outlet of the absorber 76 are connected to the external cooling water pipeline.

[0100] When users in buildings around the data center 11 have cooling needs, the ninth valve 71 is opened and the absorption refrigeration subsystem 7 starts to operate. The solution pump 74 first pumps the dilute lithium bromide solution from the absorber 76 into the generator 72. The generator 72 uses the heat of the pressurized water pumped from the high-temperature water tank 101 to heat the dilute lithium bromide solution, evaporate the refrigerant water therein, and generate high-temperature and high-pressure water vapor and lithium bromide concentrated solution. The concentrated solution passes through the solution heat exchanger 73, exchanges heat with the dilute lithium bromide solution pumped out of the absorber 76, and then enters the absorber 76 after being decompressed through the second throttle valve 75.

[0101] The high-temperature and high-pressure water vapor enters the third condenser 77, where it is condensed into high-pressure liquid water through heat exchange with cooling water. Subsequently, the high-pressure liquid water is decompressed through the third throttle valve 78 and enters the third evaporator 79. In the third evaporator 79, the low-pressure liquid water evaporates and absorbs the heat of the chilled water, producing a cooling effect and providing the required cooling capacity for the user.

[0102] The evaporated low-pressure water vapor returns to the absorber 76, contacts and is absorbed by the lithium bromide concentrated solution to form a lithium bromide dilute solution. In this process, the absorption of water vapor releases a large amount of heat. In order to maintain the temperature of the absorber 76 within a suitable range, this part of the heat needs to be taken away by cooling water. At the same time, the lithium bromide dilute solution is pumped into the generator 72 again by the solution pump 74 to start a new round of circulation.

[0103] like Figure 1 As shown, for example, the heating subsystem 8 includes a tenth valve 81, a hot water pump 82, an eleventh valve 83 and a heating heat exchanger 84, the water inlet of the heating heat exchanger 84 is connected to the outlet of the high-temperature water pump 102, the water outlet of the heating heat exchanger 84 is connected to the water inlet of the low-temperature water tank 91, the heat exchange medium inlet of the heating heat exchanger 84 is connected to the outlet of the hot water pump 82, the inlet of the hot water pump 82 is connected to the outlet of the heating pipe network, and the heat exchange medium outlet of the heating heat exchanger 84 is connected to the inlet of the heating pipe network.

[0104] The tenth valve 81 is arranged between the water inlet of the heating heat exchanger 84 and the outlet of the high temperature water pump 102 , and the eleventh valve 83 is arranged between the heat exchange medium inlet of the heating heat exchanger 84 and the outlet of the hot water pump 82 .

[0105] When users in buildings surrounding the data center 11 have a demand for heating, the tenth valve 81 and the eleventh valve 83 are opened, and the heating subsystem 8 starts to operate. The pressurized water stored in the high-temperature water tank 101 is transported to the heating heat exchanger 84 by the high-temperature water pump 102. The high-temperature pressurized water releases heat through heat exchange in the heating heat exchanger 84, and transfers its heat energy to the working fluid in the heating system. After being heated by the heating heat exchanger 84, the temperature of the working fluid in the heating system rises, and it flows to the heating pipe network of the data center 11 and surrounding buildings to provide the required heat for users.

[0106] The present invention helps alleviate the urban heat island effect by recycling the waste heat of the liquid-cooled data center 11 instead of directly discharging it into the atmosphere. At the same time, the introduction of compressed air energy storage can effectively solve the problem of output volatility of renewable energy such as solar energy and wind energy, promote the application of renewable energy in the data center 11, and promote the development of green data centers 11.

[0107] During the off-peak period of electricity consumption, the present invention consumes off-peak electricity to operate the energy storage compression cooling subsystem 3 to generate compression heat and store it in the high-temperature water tank 101; during the peak period of electricity consumption, the energy storage expansion heating subsystem 5 and the organic Rankine cycle power generation subsystem 6 are operated to convert the heat energy stored in the high-temperature water tank 101 into electrical energy to supply power to the data center 11. Therefore, the system can reduce the electricity cost of the data center 11 during the peak period of electricity consumption. In addition, the system can also serve as a backup power supply for the data center 11 to ensure the uninterrupted and safe operation of the data center 11.

[0108] The heat energy generated by the heat pump subsystem 2 and the energy storage compression cooling subsystem 3 of the present invention is stored together in the high-temperature water tank 101, and the heat energy in the high-temperature water tank 101 is distributed to each subsystem as needed, thereby improving the energy utilization efficiency of the system. In addition, since the heat pump subsystem 2 operates around the clock and continuously provides heat to the high-temperature water tank 101, it ensures that the energy storage expansion heating subsystem 5 has sufficient hot water supply at any time. This avoids system performance degradation or operation interruption caused by insufficient hot water supply, and significantly improves the stability and reliability of the system.

[0109] The present invention can flexibly switch between power generation, cooling and heating modes according to actual needs. Through the coordinated work of the energy storage expansion heating subsystem 5, the organic Rankine cycle power generation subsystem 6, the absorption cooling subsystem 7 and the heating subsystem 8, the system can provide the required energy services in different usage scenarios, thereby improving the adaptability and flexibility of the system.

[0110] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A green liquid cooling data center joint energy system, characterized in that: include: A liquid cooling subsystem, which absorbs the heat from the data center and cools the data center; The heat pump subsystem absorbs the heat of the data center, heats the water in the low-temperature water tank, and then transfers it to the high-temperature water tank for storage; The energy storage compression cooling subsystem is used to utilize the heat of the compressed air to heat the water in the low-temperature water tank and then transfer it to the high-temperature water tank for storage, and store the compressed air in the high-pressure air storage chamber; The energy storage expansion heating subsystem is used to heat the compressed air released from the high-pressure air storage chamber using the heat of the hot water in the high-temperature water tank, generate electrical energy driven by the heated compressed air, and transport the water that has absorbed heat to the low-temperature water tank; Organic Rankine cycle power generation subsystem, used to convert the heat of hot water in the high-temperature water tank into electrical energy and transport the water that has absorbed heat to the low-temperature water tank; The absorption refrigeration subsystem is used to convert the heat of hot water in the high-temperature water tank into cold water to provide cooling to users, and transport the water with absorbed heat to the low-temperature water tank; The heating subsystem is used to utilize the heat energy in the high-temperature water tank to heat the heating network and transport the water that has absorbed heat to the low-temperature water tank.

2. The green liquid cooling data center combined energy system according to claim 1, characterized in that: The liquid cooling subsystem includes a coolant pump and a cooling heat exchanger; Among them, the inlet of the coolant pump is connected to the outlet of the data center, the outlet of the coolant pump is connected to the inlet of the cooling heat exchanger and the coolant inlet of the heat pump subsystem, and the outlet of the cooling heat exchanger and the coolant outlet of the heat pump subsystem are both connected to the inlet of the data center.

3. The green liquid cooling data center combined energy system according to claim 2, characterized in that: The liquid cooling subsystem also includes a fan, a first valve and a second valve; Wherein, the fan is arranged on one side of the cooling heat exchanger, the first valve is arranged between the outlet of the coolant pump and the liquid inlet of the cooling heat exchanger, and the second valve is arranged between the outlet of the coolant pump and the coolant inlet of the heat pump subsystem.

4. The green liquid cooling data center combined energy system according to claim 1, characterized in that: The heat pump subsystem includes a first evaporator, a compressor, a first motor, a first condenser and a first throttle valve; Among them, the output shaft of the first motor is drivingly connected to the compressor, the air inlet of the compressor is connected to the heat exchange medium outlet of the first evaporator, the air outlet of the compressor is connected to the heat exchange medium inlet of the first condenser, the heat exchange medium outlet of the first condenser is connected to the first throttle valve and the heat exchange medium inlet of the first evaporator in sequence; the water inlet of the first condenser is connected to the low-temperature water pump and the water outlet of the low-temperature water tank in sequence; the water outlet of the first condenser is connected to the water inlet of the high-temperature water tank.

5. The green liquid cooling data center combined energy system according to claim 1, characterized in that: The energy storage compression cooling subsystem includes a multi-stage compressor connected in series and a second motor; Wherein, the output shaft of the second motor is drivingly connected to the multi-stage air compressor; an intercooler is arranged between two adjacent air compressors and between the last air compressor and the high-pressure air storage chamber; the air inlet of the intercooler between two adjacent air compressors is connected to the air outlet of the previous air compressor, the air outlet of the intercooler between two adjacent air compressors is connected to the air inlet of the next air compressor, the air outlet of the last air compressor is connected to the air inlet of the last intercooler, and the air inlet of the high-pressure air storage chamber is connected to the air outlet of the last intercooler; The water inlet of each intercooler is connected with the low-temperature water pump and the water outlet of the low-temperature water tank in sequence, and the water outlet of each intercooler is connected with the water inlet of the high-temperature water tank.

6. The green liquid cooling data center combined energy system according to claim 1, characterized in that: The energy storage expansion heating subsystem includes a multi-stage series-connected turbine and a first generator; Wherein, the multi-stage series turbine is drivingly connected to the first generator; a reheater is arranged between the high-pressure air storage chamber and the first-stage turbine, and between two adjacent-stage turbines; the air inlet of the reheater between two adjacent-stage turbines is connected to the air outlet of the previous-stage turbine, the air outlet of the reheater between two adjacent-stage turbines is connected to the air inlet of the next-stage turbine, the air outlet of the high-pressure air storage chamber is connected to the air inlet of the first reheater, and the air inlet of the first-stage turbine is connected to the air outlet of the first reheater; The water inlet of each reheater is connected with the high-temperature water pump and the water outlet of the high-temperature water tank in sequence; the water outlet of each reheater is connected with the water inlet of the low-temperature water tank.

7. The green liquid cooling data center combined energy system according to claim 1, characterized in that: The organic Rankine cycle power generation subsystem includes a second evaporator, an expander, a second generator, a second condenser, a working fluid pump, a cooling water pump and a cooling tower; Wherein, the water inlet of the second evaporator is connected with the high-temperature water pump and the water outlet of the high-temperature water tank in sequence, the water outlet of the second evaporator is connected with the water inlet of the low-temperature water tank, the heat exchange medium outlet of the second evaporator is connected with the heat exchange medium inlet of the expander, the heat exchange medium outlet of the expander is connected with the heat exchange medium inlet of the second condenser, the heat exchange medium outlet of the second condenser is connected with the working medium pump and the heat exchange medium inlet of the second evaporator in sequence; the expander is drivingly connected with the second generator; The water inlet of the second condenser is communicated with the outlet of the cooling water pump, the inlet of the cooling water pump is communicated with the water outlet of the cooling tower, and the water inlet of the cooling tower is communicated with the water outlet of the second condenser.

8. The green liquid cooling data center combined energy system according to claim 1, characterized in that: The absorption refrigeration subsystem includes a generator, a solution heat exchanger, a solution pump, a second throttle valve, an absorber, a third condenser, a third throttle valve and a third evaporator; The water inlet of the generator is connected to the high-temperature water pump and the water outlet of the high-temperature water tank in sequence, the water outlet of the generator is connected to the water inlet of the low-temperature water tank, the heat exchange medium inlet of the generator is connected to the first outlet of the solution heat exchanger, the heat exchange medium outlet of the generator is connected to the first inlet of the solution heat exchanger, and the steam outlet of the generator is connected to the steam inlet of the third condenser; The second inlet of the solution heat exchanger is connected to the outlet of the solution pump, the inlet of the solution pump is connected to the heat exchange medium outlet of the absorber, the second outlet of the solution heat exchanger is connected to the heat exchange medium inlet of the absorber through the second throttle valve; the water outlet of the third condenser is connected to the water inlet of the third evaporator through the third throttle valve, and the steam outlet of the third evaporator is connected to the air inlet of the absorber.

9. The combined energy system for a green liquid cooling data center according to any one of claims 1 to 8, characterized in that: The heating subsystem includes a heating water pump and a heating heat exchanger; Among them, the water inlet of the heating heat exchanger is connected with the high-temperature water pump and the water outlet of the high-temperature water tank in sequence, the water outlet of the heating heat exchanger is connected with the water inlet of the low-temperature water tank, the heat exchange medium inlet of the heating heat exchanger is connected with the outlet of the hot water supply pump, the inlet of the hot water supply pump is connected with the outlet of the heating pipe network, and the heat exchange medium outlet of the heating heat exchanger is connected with the inlet of the heating pipe network.

10. The green liquid cooling data center combined energy system according to claim 4, characterized in that: The heat pump subsystem further includes a third valve, which is arranged between the water inlet of the first condenser and the outlet of the low-temperature water pump.

11. The green liquid cooling data center combined energy system according to claim 5, characterized in that: The energy storage compression cooling subsystem further includes a fourth valve, which is arranged between the water inlets of all intercoolers and the outlet of the low-temperature water pump.

12. The green liquid cooling data center combined energy system according to claim 6, characterized in that: The energy storage expansion heating subsystem also includes a fifth valve and a sixth valve. The fifth valve is arranged between the air outlet of the high-pressure air storage chamber and the air inlet of the first reheater, and the sixth valve is arranged between the water outlet of the high-temperature water pump and the water inlets of all reheaters.

13. The green liquid cooling data center combined energy system according to claim 7, characterized in that: The organic Rankine cycle power generation subsystem includes a seventh valve and an eighth valve. The seventh valve is arranged between the water inlet of the second evaporator and the water outlet of the high-temperature water pump, and the eighth valve is arranged between the water inlet of the second condenser and the outlet of the cooling water pump.

14. The green liquid cooling data center combined energy system according to claim 8, characterized in that: The absorption refrigeration subsystem includes a ninth valve, which is arranged between the water inlet of the generator and the outlet of the high-temperature water pump.

15. The green liquid cooling data center combined energy system according to claim 9, characterized in that: The heating subsystem includes a tenth valve and an eleventh valve. The tenth valve is arranged between the water inlet of the heating heat exchanger and the outlet of the high-temperature water pump, and the eleventh valve is arranged between the heat exchange medium inlet of the heating heat exchanger and the outlet of the hot water pump.

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