A solar-powered data center combined cooling, heating and power system

Abstract

This invention proposes a solar-powered combined cooling, heating, and power (CCHP) system for data centers. It integrates a solar photovoltaic thermal system, a proton exchange membrane electrolyzer hydrogen production system, a high-temperature proton exchange membrane fuel cell system, a dual-effect lithium bromide absorption cooling cycle system, and a fluorine pump natural cooling system. To meet the year-round electricity and cooling needs of data centers, the high-temperature proton exchange membrane fuel cell generates electricity and waste heat to power the data center and drive the dual-effect lithium bromide absorption cooling cycle system for cooling. This achieves cascaded energy utilization, reduces energy waste and environmental pollution, and achieves energy conservation and emission reduction.

Description

Technical Field

[0001] This invention belongs to the field of combined heat and power technology, and particularly relates to a solar-based combined cooling, heating and power system for data centers. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] Green energy conservation is increasingly becoming the benchmark for development across various industries. With the continuous development of information and communication technologies, the high energy consumption of data centers is becoming increasingly prominent. Data centers are energy-intensive industries, using large amounts of electricity to power servers and equipment. To reduce carbon emissions, data centers need to adopt more sustainable energy sources, such as renewable energy sources like solar and wind power. Meanwhile, combined cooling, heating, and power (CCHP) systems can simultaneously generate electricity, heat, and cooling energy within a comprehensive energy system, addressing the diverse energy needs of data centers, achieving multi-level energy utilization, and improving energy efficiency. Reducing data center energy costs and building green data centers is imperative, and the application of the above strategies and technologies in data centers is receiving increasing attention and research.

[0004] Among numerous renewable energy sources, solar energy accounts for the largest share and is considered one of the most promising. As a renewable energy source, solar energy has advantages such as high energy output, long utilization period, wide distribution, and direct exploitation. Solar energy utilization can be divided into two aspects: photovoltaic (PV) and solar thermal (SPT). A solar photovoltaic-SPT system is a device that combines photovoltaic and SPT technologies to simultaneously provide electricity and heat, achieving high solar energy utilization efficiency.

[0005] Compared to traditional thermal engine power generation systems, electrochemical power generation using fuel cells emits less and is more efficient. As a low-energy power generation method, fuel cells can generate electricity to power data centers, and the waste heat can be used in absorption refrigeration systems to provide cooling for these centers. High-temperature proton exchange membrane fuel cells (HT-PEMFCs), due to their high-temperature (120℃-200℃) operating characteristics, exhibit better water management and CO resistance than low-temperature proton exchange membrane fuel cells (LT-PEMFCs). Most importantly, the heat generated is suitable for dual-effect absorption refrigeration systems, providing more useful work output for the waste heat recovery and utilization of HT-PEMFCs. Regarding the water source for hydrogen production through water electrolysis, wastewater treatment plant effluent has a significant advantage over groundwater, surface water, and seawater. Using wastewater effluent for hydrogen production allows the generated pure oxygen to be directly supplied to wastewater treatment plants in situ, improving the efficiency of aerobic treatment systems in wastewater treatment facilities and reducing operating costs; it also contributes to energy conservation and emission reduction in wastewater treatment plants. The dual-effect lithium bromide absorption refrigeration cycle system is matched with the waste heat temperature of the high-temperature proton exchange membrane fuel cell, which can effectively improve the efficiency. At the same time, when used in conjunction with the fluorine pump natural cooling system, it can make full use of natural cold sources and reduce cooling energy consumption.

[0006] Extensive research has been conducted on data centers using cooling systems to date. However, there is little research on using synchronous systems to generate power, cooling, and heat for data centers. Therefore, how to combine multiple systems to generate power, cooling, and heat for data centers, achieve cascaded energy utilization, and reduce energy loss is a problem that needs to be solved. Summary of the Invention

[0007] To overcome the shortcomings of the existing technologies, this invention provides a solar-based data center combined cooling, heating and power system that integrates multiple systems to meet the year-round electricity and cooling needs of the data center. It enables tiered utilization of energy, reduces energy waste and environmental pollution, and achieves energy conservation and emission reduction.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] In a first aspect, the present invention provides a solar-based data center combined cooling, heating and power system, comprising: a solar photovoltaic thermal system, a proton exchange membrane electrolyzer hydrogen production system, a high-temperature proton exchange membrane fuel cell system, a dual-effect lithium bromide absorption refrigeration cycle system, and a fluorine pump natural cooling system.

[0010] The solar photovoltaic and photothermal system provides power to the proton exchange membrane electrolyzer hydrogen production system and provides heating for data center users; the proton exchange membrane electrolyzer hydrogen production system is connected to the high-temperature proton exchange membrane fuel cell system, providing hydrogen and oxygen to the high-temperature proton exchange membrane fuel cell system, which in turn provides power to the data center.

[0011] The high-temperature proton exchange membrane fuel cell system is coupled to the dual-effect lithium bromide absorption refrigeration cycle system so that the dual-effect lithium bromide absorption refrigeration cycle system can utilize the waste heat of the high-temperature proton exchange membrane fuel cell system.

[0012] The dual-effect lithium bromide absorption cooling cycle system is used to absorb heat from the data center to achieve the purpose of cooling the data center.

[0013] The fluorine pump natural cooling system is used to provide cooling to the data center using natural cold sources when the dual-effect lithium bromide absorption refrigeration cycle system is insufficient.

[0014] The above one or more technical solutions have the following beneficial effects:

[0015] This invention integrates a solar photovoltaic thermal system, a proton exchange membrane electrolyzer hydrogen production system, a high-temperature proton exchange membrane fuel cell system, a dual-effect lithium bromide absorption refrigeration cycle system, and a fluorine pump natural cooling system. To meet the year-round electricity and cooling needs of data centers, the high-temperature proton exchange membrane fuel cell generates electricity and waste heat to power the data center and drive the dual-effect lithium bromide absorption refrigeration cycle system for cooling. This achieves cascaded energy utilization, reduces energy waste and environmental pollution, and realizes energy conservation and emission reduction.

[0016] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0018] Figure 1 This is a schematic diagram of a solar-powered data center combined cooling, heating and power system according to Embodiment 1 of the present invention. Detailed Implementation

[0019] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0020] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations of the present invention.

[0021] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0022] Example 1

[0023] This embodiment discloses a solar-based data center combined cooling, heating and power system, including: a solar photovoltaic thermal system, a proton exchange membrane electrolyzer hydrogen production system, a high-temperature proton exchange membrane fuel cell system, a dual-effect lithium bromide absorption refrigeration cycle system, and a fluorine pump natural cooling system.

[0024] The solar photovoltaic and photothermal system provides electricity to the proton exchange membrane electrolyzer hydrogen production system and heating for data center users; the proton exchange membrane electrolyzer hydrogen production system is connected to the high-temperature proton exchange membrane fuel cell system to provide hydrogen and oxygen to the high-temperature proton exchange membrane fuel cell system, which in turn provides electricity to the data center.

[0025] A high-temperature proton exchange membrane fuel cell system is coupled with a dual-effect lithium bromide absorption refrigeration cycle system so that the dual-effect lithium bromide absorption refrigeration cycle system can utilize the waste heat of the high-temperature proton exchange membrane fuel cell system.

[0026] A dual-effect lithium bromide absorption cooling cycle system is used to absorb heat from data centers to achieve the purpose of cooling the data centers;

[0027] Fluorine pump natural cooling systems are used to provide cooling to data centers by utilizing natural cold sources when the cooling provided by the dual-effect lithium bromide absorption refrigeration cycle system is insufficient.

[0028] The system provided in this implementation can provide power to support the operation of IT equipment in the data center and also provide cooling for the data center's cooling system. The solar photovoltaic and solar thermal system can provide power to the proton exchange membrane electrolyzer (PEMEC) hydrogen production system and store heat energy for heating data center users. The high-temperature proton exchange membrane fuel cell (HT-PEMFC) system is coupled with a dual-effect lithium bromide absorption refrigeration cycle system to utilize the waste heat from the HT-PEMFC system. Specifically, when the cooling provided by the dual-effect lithium bromide absorption refrigeration cycle system is insufficient, a fluorine pump natural cooling system can be used to supplement the cooling capacity, making full use of natural cold sources and reducing the energy consumption of the cooling system. This combined cooling and power system matches the power supply equipment according to the energy structure of the data center, achieving cascaded energy utilization and effectively meeting the data center's cooling and power needs.

[0029] Combination Figure 1 This embodiment provides a detailed description of each component included in the solar-based data center combined cooling, heating and power system.

[0030] The solar photovoltaic and solar thermal system comprises two parts: solar photovoltaic power generation and solar thermal storage. Solar energy is irradiated onto the surface of a parabolic trough concentrator. Based on spectral beam splitting technology, different wavelengths of solar radiation are differentiated and utilized to achieve cascaded utilization of solar energy. Specifically, solar radiation in the spectrum that can be efficiently converted into photovoltaic power (visible light radiation) is concentrated onto the photovoltaic (PV) generator, converting solar energy into electrical energy. After passing through the PV inverter, this energy is first transmitted to the proton exchange membrane electrolyzer hydrogen production system via the power management center, and can be powered by the power grid if necessary. Solar radiation in the spectrum that cannot be converted into photovoltaic power or has lower conversion efficiency (ultraviolet and infrared radiation) is directly projected onto the solar thermal receiver (HeatReceiver). Cold oil is heated from the cold oil tank (COT), and the solar thermal energy is stored in the hot oil tank (HOT). This stored solar thermal energy is then used to provide subsequent heating for the data center via the first heat exchanger (HEX1).

[0031] Specifically, the solar thermal receiver is connected to the hot oil tank (HOT) via pipe 58. The hot oil tank (HOT) is connected to the inlet of the first heat exchanger (HEX1) via pipe 59. A first pump (P1) is installed on pipe 59. The outlet of the first heat exchanger (HEX1) is connected to the cold oil tank (COT) via pipe 61. The cold oil tank (COT) is connected back to the solar thermal receiver (HAT) via pipe 62. A second pump (P2) is installed on pipe 62. In the first heat exchanger (HEX1), heat is exchanged to provide heating for the data center.

[0032] Proton exchange membrane electrolyzer hydrogen production system: After the wastewater treatment plant provides raw water, the electricity from the power management center is used to drive the proton exchange membrane electrolyzer to produce hydrogen and oxygen. The hydrogen is then sent to the hydrogen tank HYT for storage. The humid oxygen is separated from the water by the demister DEM. The oxygen is then compressed to a certain pressure by the oxygen compressor OC1, and then flows into the oxygen cooler OCL to be cooled before being sent to the oxygen tank OXT for storage.

[0033] Specifically, the hydrogen produced by the proton exchange membrane electrolyzer enters the hydrogen tank HYT sequentially through pipe 10, the first valve Val1, and pipe 11; the oxygen produced by the proton exchange membrane electrolyzer enters the oxygen tank OXT for storage sequentially through pipe 4, demister DEM, pipe 5, the first oxygen compressor OC1, pipe 6, oxygen cooler OCL, pipe 7, the second valve Val2, and pipe 8.

[0034] High-temperature proton exchange membrane fuel cell systems offer a wider range of thermal energy utilization. The operating temperature of HT-PEMFC is between 120°C and 200°C, which is well-matched with the start-up heat source of the dual-effect lithium bromide absorption refrigeration cycle system. Furthermore, the exothermic electrochemical reaction and operating temperature of the fuel cell have a significant impact on the performance of the fuel cell, requiring an effective cooling system to maintain the cell temperature at the specified optimal value.

[0035] Hydrogen entering the HT-PEMFC system from the hydrogen tank (HYT) is regulated to the operating pressure by the third valve and then enters the hydrogen recovery tank (HR). Unreacted hydrogen recovered from the anode of the high-temperature proton exchange membrane fuel cell stack is pressurized to the operating pressure by the fuel compressor (FC) and then sent to the hydrogen recovery tank (HR). The recovered hydrogen mixes with fresh hydrogen in the HR and flows into the anode heat exchanger (HEX3), where it is heated to the operating temperature before being sent to the HT-PEMFC anode. Simultaneously, oxygen from the oxygen tank (OXT) is pressurized to the operating pressure in the oxygen compressor (OC2) and flows into the cathode heat exchanger (HEX2), where it is heated to the operating temperature by waste heat before being sent to the HT-PEMFC cathode. An electrochemical reaction then occurs inside the HT-PEMFC to generate electricity, which is fed into the energy storage module of the power processing system to power the data center in conjunction with the power grid. The waste heat in the cathode heat exchanger (HEX2) comes from unreacted gases and generated water from the HT-PEMFC stack, providing heat to the inlet gas. The HT-PEMFC system utilizes hydrogen and other raw materials generated by PEMEC to conduct electrochemical reactions, providing power to the data center. At the same time, the waste heat generated is transferred to a dual-effect lithium bromide absorption cooling cycle system to drive it to provide cooling energy to the data center.

[0036] Specifically, the hydrogen tank HYT is connected to the third valve Val3 via pipe 12. The third valve Val3 is connected to the hydrogen recovery tank HR via pipe 13. The hydrogen recovery tank HR is connected to the anode heat exchanger HEX3 via pipe 14. The anode heat exchanger HEX3 is connected to the anode of the high-temperature proton exchange membrane fuel cell via pipe 15. The unreacted hydrogen recovered from the anode of the high-temperature proton exchange membrane fuel cell stack enters the fuel compressor FC via pipe 16, is pressurized to the working pressure, and then is transported to the hydrogen recovery tank HR via pipe 17. The oxygen tank OXT is connected to the fourth valve Val4 via pipe 9. The fourth valve Val4 is connected to one end of the oxygen compressor OC2 via pipe 18. The other end of the oxygen compressor OC2 is connected to the cathode heat exchanger HEX2 via pipe 19. After being heated to the working temperature by the waste heat in the cathode heat exchanger HEX2, it is transported to the HT-PEMFC cathode via pipe 20.

[0037] The dual-effect lithium bromide absorption refrigeration cycle system divides the lithium bromide solution into two streams after being pressurized by the fourth pump P4. One stream flows into the high-pressure generator HG, where it is heated by waste heat from the HT-PEMFC, producing high-concentration, high-temperature water vapor and a high-temperature solution. The other stream flows directly into the low-pressure generator LG, where it is heated and evaporated by the high-temperature water vapor from the high-pressure generator HG. This evaporated water vapor, along with the high-pressure generator HG's vapor, enters the first condenser Cond1 to release heat, becoming a concentrated solution with a high mass fraction. The solutions in the low-pressure generator LG and the high-pressure generator HG flow through the sixth valve Val6 and return to the absorber. The concentrated solution flowing out of the first condenser Cond1 flows through the fifth throttling valve Val5 to reduce pressure and enter the first evaporator Eva1, absorbing heat from the data center server room. It then becomes low-temperature, low-pressure water vapor, which flows into the absorber and is absorbed by the lithium bromide solution. This cycle repeats continuously, ultimately achieving the cooling purpose.

[0038] Specifically, the absorber is connected to the fourth pump P4 via pipe 28, and the fourth pump P4 is connected to the high-pressure generator HG via pipe 29. In the high-pressure generator HG, the solution is heated by waste heat from the HT-PEMFC, generating high-concentration high-temperature water vapor and a high-temperature solution. The generated high-temperature solution returns to the absorber via pipe 31, the sixth valve Val6, and pipe 34, while the generated high-temperature water vapor enters the low-pressure generator LG via pipe 35. In addition, the fourth pump P4 is also directly connected to the low-pressure generator LG via pipe 30. In the low-pressure generator LG, the solution is heated and evaporated by high-temperature water vapor from the high-pressure generator HG. The evaporated vapor reacts with the high-temperature water vapor from the high-pressure generator HG. The water vapor from HG enters the first condenser Cond1 and releases heat, becoming a concentrated solution with a high mass fraction. It then enters the first evaporator Eva1 through pipe 38, fifth valve Val5, and pipe 39, absorbing heat from the data center server room and turning into low-temperature, low-pressure water vapor. This water vapor then flows into the absorber through pipe 42 and is absorbed by the lithium bromide solution. In addition, the solution in the low-pressure generator LG returns to the absorber through pipes 32, 33, sixth valve Val6, and 34, while the solution in the high-pressure generator returns to the absorber through pipes 31, 33, sixth valve Val6, and 34.

[0039] Fluorine pump natural cooling system: When the cooling capacity of the dual-effect lithium bromide absorption refrigeration cycle system is insufficient to meet the requirements of the data center, the fluorine pump natural cooling system starts to operate. The fluorine pump natural cooling system includes a compression refrigeration cycle and a fluorine pump refrigeration cycle.

[0040] In the refrigerant pump refrigeration cycle, the liquid refrigerant evaporates and absorbs heat in the second evaporator (Eva2) to become gaseous. It then cools in the second condenser (Cond2) by outdoor air, condenses and releases heat, and is then pumped back to the second evaporator (Eva2) by the fifth pump (P5). The condensation temperature is slightly lower than the evaporation temperature. The refrigerant obtains its circulation power at the outlet of the second condenser (Cond2), unlike traditional compression refrigeration cycles.

[0041] Because the refrigerant pump consumes very little power, the refrigerant pump natural cooling system consumes less energy than the traditional vapor compression cooling system.

[0042] Specifically, the second evaporator Eva2 is connected to Check Val2 via pipe 52. Check Val2 is connected to the compressor RC inlet via pipe 53, and the compressor RC outlet is connected to pipe 54. The second evaporator Eva2 is connected to the one-way valve Check Val3 via pipe 55. One-way valve Check Val3 is connected to pipe 56. Pipes 54 and 56 are connected to the second condenser Cond2 via pipe 57. The second condenser Cond2 is connected to the reservoir inlet via pipe 43. The reservoir outlet is divided into two paths via pipes 44 and 46. Pipe 44 is connected to one end of the seventh valve Val7. The other end of the seventh valve Val7 is connected to one end of pipe 45. Pipe 46 is connected to one end of the one-way valve Check Val1. The other end of the one-way valve Check Val1 is connected to one end of pipe 47. The other end of pipe 47 is connected to one end of the fifth pump P5. The other end of the fifth pump P5 is connected to one end of pipe 48. The other ends of pipe 48 and pipe 45 are connected to the second evaporator Eva2 via pipe 49.

[0043] Using a fluorine pump natural cooling system can make full use of natural cold sources and reduce the power consumption of data center cooling systems. This embodiment of the fluorine pump natural cooling system has three operating modes:

[0044] The first type of refrigerant pump natural cooling mode: When the outdoor temperature is below 10℃ (adjustable), the equipment automatically assesses the load conditions of the computer room and enters the pure pump cooling mode in different scenarios. It opens the check valves Check Val1 and Check Val3, closes the throttle valve Val7 and check valve Check Val2, and uses a low-power refrigerant pump to replace the compressor, making full use of the natural cold source and reducing energy consumption.

[0045] The second hybrid cooling mode: When the outdoor temperature is between 10℃ and 20℃, the refrigerant pump, namely pump P5, can be turned on to provide cooling output. When the cooling capacity cannot meet the cooling demand, the compressor RC needs to be started to supplement the cooling capacity, so as to reduce the compressor power consumption and improve energy efficiency.

[0046] The third compressor cooling mode: When the outdoor ambient temperature is higher than 20℃ (adjustable), the outdoor natural cold source cannot be used. Close the check valves Check Val1 and Check Val3, open the check valve Check Val2 and the expansion valve Val7, and only use the compressor RC to provide the required cooling capacity.

[0047] This embodiment is primarily applied to data centers, integrating a solar photovoltaic thermal system, a proton exchange membrane electrolyzer (PEMEC) hydrogen production system, a high-temperature proton exchange membrane fuel cell (HT-PEMFC) system, a dual-effect lithium bromide absorption refrigeration cycle system, and a fluorine pump natural cooling system. Addressing the year-round electricity and cooling needs of data centers, the HT-PEMFC generates electricity and waste heat to power the data center and drive the dual-effect lithium bromide absorption refrigeration cycle system for cooling, achieving cascaded energy utilization, reducing energy waste and environmental pollution, and realizing energy conservation and emission reduction.

[0048] This embodiment employs a high-efficiency solar photovoltaic and solar thermal system, making full use of solar energy to generate both solar power and heat. Solar power is stored in the form of high-pressure hydrogen via PEMEC, while solar thermal energy is stored through a thermal storage section. This allows the system to provide heating for the data center when needed, increasing the proportion of renewable energy utilization in the data center and providing a valuable reference for the effective use of renewable energy.

[0049] In this embodiment, a dual-effect lithium bromide absorption cooling cycle system is coupled with a fluorine pump natural cooling system. When the cooling capacity is insufficient, the fluorine pump natural cooling system is activated to make full use of the natural cold source, provide cooling capacity for the data center, and reduce the energy consumption of the computer room.

[0050] This embodiment uses treated water from a wastewater treatment plant as a raw material for PEMEC hydrogen production, realizing the reuse of wastewater and reducing energy waste and environmental pollution.

[0051] Those skilled in the art will recognize that the units and algorithm steps described in conjunction with the embodiments herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0052] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A solar-powered combined cooling, heating and power (CCHP) system for data centers, characterized in that, include: Solar photovoltaic and photothermal systems, proton exchange membrane electrolyzer hydrogen production systems, high-temperature proton exchange membrane fuel cell systems, dual-effect lithium bromide absorption refrigeration cycle systems, and fluorine pump natural cooling systems; The solar photovoltaic and photothermal system provides electricity to the proton exchange membrane electrolyzer hydrogen production system and heating for data center users; the proton exchange membrane electrolyzer hydrogen production system is connected to the high-temperature proton exchange membrane fuel cell system, providing hydrogen and oxygen to the high-temperature proton exchange membrane fuel cell system, which in turn provides electricity to the data center; unreacted gases and generated water in the high-temperature proton exchange membrane fuel cell stack flow into the anode and cathode heat exchangers, exchanging heat with the inlet gases of the anode and cathode heat exchangers; the high-temperature proton exchange membrane fuel cell system is coupled to the dual-effect lithium bromide absorption refrigeration cycle system, allowing the dual-effect lithium bromide absorption refrigeration cycle system to utilize the waste heat of the high-temperature proton exchange membrane fuel cell system; The proton exchange membrane electrolyzer in the hydrogen production system is used to generate hydrogen and oxygen. The generated hydrogen is transported to a hydrogen tank for storage. The generated oxygen is separated from water and oxygen by a demister. The separated oxygen is compressed by an oxygen compressor and then enters an oxygen cooler and an oxygen tank for cooling and storage. The hydrogen tank and the oxygen tank are connected to the high-temperature proton exchange membrane fuel cell system. The hydrogen tank is connected to the hydrogen recovery tank. Unreacted hydrogen produced by the high-temperature proton exchange membrane fuel cell is pressurized by the fuel compressor and then sent to the hydrogen recovery tank. The mixed hydrogen output from the hydrogen recovery tank is heated by the anode heat exchanger and then sent to the anode of the high-temperature proton exchange membrane fuel cell. The oxygen output from the oxygen tank is pressurized and heated sequentially by the oxygen compressor and the cathode heat exchanger. The cathode heat exchanger is connected to the cathode of the high-temperature proton exchange membrane fuel cell. The dual-effect lithium bromide absorption refrigeration cycle system is used to absorb heat from the data center to achieve the purpose of cooling the data center. The dual-effect lithium bromide absorption refrigeration cycle system includes an absorber and a high-pressure generator. The solution flowing out of the absorber is divided into two paths. One path generates high-temperature water vapor and high-temperature solution in the high-pressure generator. The generated high-temperature water vapor heats and evaporates the solution in the low-pressure generator. Another stream flows into the low-pressure generator, where the water vapor generated by the low-pressure generator and the water vapor generated by the high-pressure generator release heat through the condenser. The solution flowing out of the condenser enters the evaporator to absorb heat from the data center server room. The fluorine pump natural cooling system is used to provide cooling capacity to the data center by utilizing a natural cold source when the cooling supply of the dual-effect lithium bromide absorption refrigeration cycle system is insufficient. The fluorine pump natural cooling system includes a second evaporator and a second condenser that are connected in a cycle. After the second condenser releases heat, it is divided into two paths by a liquid receiver. One path is sent back to the second evaporator through a first one-way valve and a fifth pump, and the other path is sent to the second evaporator through a seventh valve. The gaseous refrigerant output from the second evaporator is divided into two paths. One path passes through the second one-way valve and the refrigerant compressor in sequence and is then delivered to the second condenser. The other path passes through the third one-way valve in sequence and is then delivered to the second condenser. The solar photovoltaic and solar thermal system consists of two parts: solar photovoltaic power generation and solar thermal storage. Solar energy shines on the surface of a parabolic trough concentrator. Based on spectral beam splitting technology, different bands of solar radiation are used separately to achieve cascaded utilization of solar energy. Among them, solar radiation in the spectrum that can be efficiently converted into photovoltaic power is concentrated into photovoltaic power generation, and solar energy is converted into electrical energy. After passing through the photovoltaic inverter, it is first transmitted to the proton exchange membrane electrolyzer hydrogen production system through the power management center. Solar radiation in the spectrum that cannot be converted into photovoltaic power or has a low conversion efficiency is directly projected onto the solar thermal receiver, heating the cold oil from the cold oil tank and storing the solar thermal energy in the hot oil tank. It is then used to provide heating for the data center through the first heat exchanger.

2. The solar-based data center combined cooling, heating, and power system as described in claim 1, characterized in that, The solutions in the low-pressure generator and the high-pressure generator are respectively recovered to the absorber; the water vapor flowing out of the evaporator is absorbed by the solution in the absorber.

3. A solar-based data center combined cooling, heating, and power system as described in claim 1, characterized in that, When the outdoor temperature is lower than the first set temperature, the first and third one-way valves are opened, and the seventh and second one-way valves are closed, so that the refrigerant pump natural cooling system enters the refrigerant pump natural cooling operation mode.

4. A solar-based data center combined cooling, heating, and power system as described in claim 1, characterized in that, When the outdoor temperature is within the range of the first set temperature and the second set temperature, the fifth pump is turned on to provide cooling output. When the cooling capacity cannot meet the cooling demand, the refrigerant compressor is started to supplement the cooling capacity.

5. A solar-based data center combined cooling, heating, and power system as described in claim 1, characterized in that, When the outdoor temperature is higher than the second set temperature, the first and third one-way valves are closed, the seventh valve and the second one-way valve are opened, and the refrigerant compressor is activated for cooling.

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