Supercritical carbon dioxide cooling system and method, computer equipment and medium

Abstract

The invention relates to the technical field of refrigerating systems, and discloses a supercritical carbon dioxide cooling system and method, computer equipment and a medium, the system is applied to a seabed data center, and the system comprises a low-pressure-ratio compressor used for compressing and conveying supercritical carbon dioxide; the seawater heat exchanger is used for accommodating seawater and carrying out heat exchange with the supercritical carbon dioxide meeting the preset temperature to obtain first cooled supercritical carbon dioxide; and the refrigeration module comprises a throttle valve and an evaporator, and the evaporator is used for evaporating the first cooled supercritical carbon dioxide to obtain second cooled supercritical carbon dioxide and conveying the second cooled supercritical carbon dioxide to the seabed data center to cool the server. Seawater is used as a cooling source, fresh water does not need to be consumed, meanwhile, supercritical carbon dioxide with high heat carrying capacity is selected as a cooling medium, the heat exchange efficiency is improved, the problem of water resource consumption caused by an evaporative cooling technology is avoided, and the method is particularly important for western and northern areas lacking fresh water resources.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration systems, and in particular to a supercritical carbon dioxide cooling system, method, computer equipment and medium. Background Art

[0002] As the requirements for energy consumption levels of land-based data centers have become increasingly stringent in recent years, under the current "Eastern Data and Western Computing" policy, a large number of data centers will be built in the western region. Most of the low-energy data centers in the western region use evaporative cooling technology (using cooling towers, indirect evaporative cooling towers and indirect evaporative cooling AHU as outdoor cooling sources) to utilize the dry air energy in the western region. However, evaporative cooling technology consumes a lot of water. The western region itself is a region with severe water shortages, but the water consumption caused by the operation of large-scale, high-energy data centers is increasing.

[0003] In order to achieve better energy-saving effects, many land-based data centers currently use water from rivers and lakes to cool down the data center. However, considering the water level changes, the data center will be a certain distance away from the water source, generally about 2 km away. Therefore, the average transmission energy consumption of the water pump will account for more than 30% of the energy consumption of the cooling system. In the completely natural cooling stage, the energy consumption of the water pump will account for more than 50% of the energy consumption of the cooling system. In the operation of such a data center, the proportion of water pump transmission energy consumption has become a difficult pain point for the project. Summary of the invention

[0004] In view of this, the present invention provides a supercritical carbon dioxide cooling system, method, computer equipment and medium to solve the problems of low efficiency and high energy consumption of water cooling in current data centers.

[0005] In a first aspect, the present invention provides a supercritical carbon dioxide cooling system, which is applied to a submarine data center, and includes:

[0006] A low pressure ratio compressor is used to compress and transport supercritical carbon dioxide so that the supercritical carbon dioxide meets a preset temperature and is transported to a seawater heat exchanger;

[0007] A seawater heat exchanger is used to accommodate seawater and supercritical carbon dioxide that meets a preset temperature for heat exchange, obtain first cooled supercritical carbon dioxide, and discharge the seawater after the reaction;

[0008] The refrigeration module includes a throttle valve and an evaporator. The evaporator is used to evaporate the first cooled supercritical carbon dioxide to obtain the second cooled supercritical carbon dioxide, and transport it to the submarine data center to cool the servers of the submarine service center.

[0009] The supercritical carbon dioxide cooling system provided by the embodiment of the present invention uses seawater as a cooling source and does not require fresh water. At the same time, it also avoids the problem of large-scale fresh water consumption caused by evaporative cooling technology, which is particularly important for the western and northern regions where fresh water resources are extremely scarce. In addition, considering the high heat carrying capacity of supercritical carbon dioxide, selecting it as a cooling medium can transmit more cold capacity, thereby improving the efficiency of heat exchange.

[0010] In an optional embodiment, the system further includes:

[0011] The lifting pump unit is used to provide power to the seawater heat exchanger so as to transport seawater into the seawater heat exchanger.

[0012] The supercritical carbon dioxide cooling system provided in the embodiment of the present invention is provided with a lift pump unit to provide necessary power for the seawater heat exchanger, thereby ensuring that the seawater can be effectively transported to the heat exchanger for heat exchange.

[0013] In an optional embodiment, the lift pump unit is disposed below the water surface and is connected to the seawater heat exchanger via a seawater pipeline.

[0014] The supercritical carbon dioxide cooling system provided by the embodiment of the present invention arranges the lifting pump unit and the seawater heat exchanger underwater, so that the seawater pipeline becomes short and simple, significantly reduces the resistance of the pipeline system, and makes the lift and power consumption required by the lifting pump when conveying seawater relatively small, which helps to reduce the energy consumption of the entire cooling system.

[0015] In a second aspect, the present invention provides a supercritical carbon dioxide cooling method, which is applied to the supercritical carbon dioxide cooling system of the first aspect, and the method comprises:

[0016] The supercritical carbon dioxide compressed by the low-pressure ratio compressor is subjected to a heat exchange reaction with the delivered seawater, so that the supercritical carbon dioxide is cooled to obtain a first cooled supercritical carbon dioxide;

[0017] The first cooled supercritical carbon dioxide is transported to the terminal precision air conditioner for evaporation reaction to obtain the second cooled supercritical carbon dioxide;

[0018] The air that reacts with the second cooled supercritical carbon dioxide is sent to the servers in the submarine data center to cool the servers.

[0019] The supercritical carbon dioxide cooling method provided by the embodiment of the present invention utilizes the high heat load characteristic of supercritical carbon dioxide to reduce the required pipeline size and reduce the transmission energy consumption. At the same time, the method uses seawater as a cooling source and does not need to consume fresh water resources. Using seawater for cooling can also reduce the heat island effect of the data center on the environment to a certain extent, which is beneficial to environmental protection and sustainable development.

[0020] In an optional embodiment, when the temperature of the seawater is higher than a first preset temperature, the low-pressure ratio compressor operates in a first pressurization mode so that the compression ratio of the low-pressure ratio compressor reaches a preset value.

[0021] The supercritical carbon dioxide cooling method provided in the embodiment of the present invention takes into account that when the seawater temperature is high, directly allowing the supercritical carbon dioxide to exchange heat with seawater may not achieve the ideal cooling effect. Therefore, the supercritical carbon dioxide is first compressed, the temperature and pressure are increased, thereby increasing the heat exchange temperature difference between the two and improving the heat exchange efficiency.

[0022] In an optional embodiment, seawater is transported into the heat exchanger by a lift pump for heat exchange reaction.

[0023] The supercritical carbon dioxide cooling method provided by the embodiment of the present invention provides a lift pump unit to provide necessary power for the seawater heat exchanger, thereby ensuring that the seawater can be effectively transported to the heat exchanger for heat exchange.

[0024] In an optional embodiment, the air reacting with the second cooled supercritical carbon dioxide is sent to the server of the submarine data center to cool the server, including:

[0025] exchanging heat between the second cooled supercritical carbon dioxide and the air in the computer room of the submarine data center to generate cooling air with a temperature lower than a third preset temperature;

[0026] Cooling air is sent to the servers in the underwater data center to keep them cool.

[0027] The supercritical carbon dioxide cooling method provided in the embodiment of the present invention generates cold air below a third preset temperature and provides it to the server for cooling by passing the cooled supercritical carbon dioxide through the evaporator of the terminal precision air conditioner and exchanging heat with the air in the computer room.

[0028] In an optional embodiment, the method further includes:

[0029] The seawater after the heat exchange reaction is discharged into the sea.

[0030] In the supercritical carbon dioxide cooling method provided by the embodiment of the present invention, the lifting pump is not only responsible for providing power for the seawater heat exchange system and transporting the low-temperature seawater to the heat exchanger and the supercritical carbon dioxide system for heat exchange, but is also responsible for discharging the seawater after heat exchange into the sea to achieve heat transfer and recycling of natural resources.

[0031] In a third aspect, the present invention provides a computer device, comprising: a memory and a processor, the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the supercritical carbon dioxide cooling method of the second aspect or any corresponding embodiment thereof by executing the computer instructions.

[0032] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the supercritical carbon dioxide cooling method of the second aspect or any corresponding embodiment thereof.

[0033] In a fifth aspect, the present invention provides a computer program product, comprising computer instructions for causing a computer to execute the supercritical carbon dioxide cooling method of the second aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 is a schematic diagram of the system structure of a supercritical carbon dioxide cooling system according to an embodiment of the present invention;

[0036] Figure 2 is a schematic flow chart of a supercritical carbon dioxide cooling method according to an embodiment of the present invention;

[0037] Figure 3 It is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0038] 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0039] With the increasingly stringent energy consumption standards for land-based data centers, in recent years, driven by the "Eastern Data and Western Computing" policy, the construction focus of a large number of data centers has shifted to the western region. In order to reduce energy consumption, these data centers generally adopt evaporative cooling technology, using cooling towers, indirect evaporative cooling towers, and indirect evaporative cooling AHU and other equipment as outdoor cooling sources to achieve efficient heat dissipation. However, although evaporative cooling technology has significant energy-saving effects, it consumes a huge amount of water, which is undoubtedly a severe challenge for the western region where water resources are already scarce. With a large number of high-energy consumption data centers put into operation one after another, their demand for water resources is also rising, further exacerbating the problem of water shortage.

[0040] Faced with this dilemma, some land-based data centers have begun to try to use natural water sources such as rivers and lakes for cooling in order to achieve better energy-saving effects. However, this solution also faces many limitations. On the one hand, in order to ensure the stable operation of the data center, its location is often not close to the water source, so there is usually a certain distance between the data center and the water source, generally about 2 kilometers. This results in the water pump consuming a lot of energy in the process of transporting cooling water, especially in the completely natural cooling stage, the energy consumption of the water pump accounts for more than 50% of the total energy consumption of the cooling system. This high transportation energy consumption has become an insurmountable pain point in the operation of the data center, seriously affecting the improvement of its overall energy efficiency.

[0041] To address this problem, the inventor proposed an innovative solution - a supercritical carbon dioxide cooling system for marine data centers. The system cleverly uses seawater as a cooling source, which not only avoids the consumption of fresh water resources, but also effectively solves the energy consumption problem caused by long-distance transportation of seawater. Compared with traditional cooling methods, the supercritical carbon dioxide cooling system has higher energy efficiency and lower energy consumption. It introduces seawater into the heat exchange device near the data center, uses the low temperature characteristics of seawater to cool the supercritical carbon dioxide, and then sends the cooled carbon dioxide back to the data center for heat dissipation. In this process, due to the excellent thermal conductivity and fluidity of supercritical carbon dioxide, the energy consumption during transportation can be greatly reduced.

[0042] According to an embodiment of the present invention, a supercritical carbon dioxide cooling system embodiment is provided. The system is applied to a submarine data center. Figure 1 As shown, including:

[0043] A low pressure ratio compressor is used to compress and transport supercritical carbon dioxide so that the supercritical carbon dioxide meets a preset temperature and is transported to a seawater heat exchanger;

[0044] A seawater heat exchanger is used to accommodate seawater and supercritical carbon dioxide that meets a preset temperature for heat exchange, obtain first cooled supercritical carbon dioxide, and discharge the seawater after the reaction;

[0045] The refrigeration module includes a throttle valve and an evaporator. The evaporator is used to evaporate the first cooled supercritical carbon dioxide to obtain the second cooled supercritical carbon dioxide, and transport it to the submarine data center to cool the servers of the submarine service center.

[0046] Please refer to Figure 1 The low-pressure ratio compressor (also called an air pump) is used to transport and compress the supercritical carbon dioxide medium. Depending on the operating conditions, the supercritical carbon dioxide can be compressed to 1.1-1.2 times that of an ordinary air pump, so that the supercritical carbon dioxide meets the preset temperature and is transported to the seawater heat exchanger;

[0047] The seawater heat exchanger is one of the core components of the supercritical carbon dioxide cooling system. It uses the natural low temperature of seawater as a cold source. The heat exchanger adopts heat exchange technology to accommodate seawater and supercritical carbon dioxide for heat exchange, so as to ensure that the heat exchange process between seawater and supercritical carbon dioxide can be carried out efficiently and stably, and the first cooled supercritical carbon dioxide cooled by seawater is obtained, and the seawater is discharged after the reaction.

[0048] The refrigeration module, as shown in the figure, includes a throttle valve and an evaporator. By adjusting the opening of the throttle valve, the flow of supercritical carbon dioxide passing through the heat exchanger can be controlled, which helps to optimize the heat exchange efficiency according to the seawater temperature and system requirements, ensuring that the system can achieve the best cooling effect under different working conditions. In addition, when supercritical carbon dioxide passes through the throttle valve, its pressure and temperature will decrease due to the throttling effect. This pressure reduction and temperature reduction process allows the supercritical carbon dioxide to evaporate better in the subsequent evaporator, thereby absorbing more heat.

[0049] The evaporator is used to convert supercritical carbon dioxide from liquid to gas to obtain the second cooled supercritical carbon dioxide. In this process, supercritical carbon dioxide absorbs a large amount of heat, which mainly comes from the air in the computer room. Therefore, through the heat exchange of the evaporator, the air temperature in the computer room is reduced, and finally a cooling temperature that meets the preset temperature conditions is generated and transported to the server in the data center, thereby providing an effective cooling effect for the server.

[0050] In an optional embodiment, the evaporator is arranged in the terminal precision air conditioner.

[0051] In some optional embodiments, the system further comprises:

[0052] The lifting pump unit is used to provide power to the seawater heat exchanger so as to transport seawater into the seawater heat exchanger.

[0053] In an optional embodiment, the booster pump unit includes a water-increasing inlet filter, the main function of which is to filter out impurities in the seawater to protect the pump and its downstream equipment and improve the safety of the entire system. This is to prevent mud, shell fragments, water plants, small organisms, etc. in the seawater from being pumped into the system, which may cause blockage or damage to the pump, reducing the efficiency of the system and the life of the equipment.

[0054] In an optional embodiment, the lift pump unit is disposed below the water surface and is connected to the seawater heat exchanger via a seawater pipeline.

[0055] Placing the lift pump unit underwater can directly utilize the natural pressure of seawater, reducing the static pressure head that the lift pump needs to overcome during the pumping process, thereby reducing energy consumption. At the same time, setting up the seawater pipeline underwater is short and simple, reducing pipeline resistance and further reducing the operating power consumption of the pump.

[0056] In addition, being set underwater reduces the temperature loss of seawater during transportation, ensuring that the temperature of seawater entering the heat exchanger is relatively stable, thereby improving the heat exchange efficiency.

[0057] In an optional embodiment, the lift pump unit further comprises a submersible pump.

[0058] According to an embodiment of the present invention, an embodiment of a supercritical carbon dioxide cooling method is also provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0059] In this embodiment, a supercritical carbon dioxide cooling method is provided, which can be used in the above-mentioned supercritical carbon dioxide cooling system to act on a submarine data center. Figure 2 : is a flow chart of a supercritical carbon dioxide cooling method according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0060] Step S201, performing a heat exchange reaction between the supercritical carbon dioxide compressed by the low-pressure ratio compressor and the delivered seawater, so as to cool the supercritical carbon dioxide and obtain a first cooled supercritical carbon dioxide.

[0061] Specifically, supercritical carbon dioxide and the seawater transported in undergo a heat exchange reaction in the seawater transducer, so that the seawater acts as a cooling source to cool the supercritical carbon dioxide. Supercritical carbon dioxide has extremely high thermal conductivity and fluidity under specific conditions (such as pressure and temperature reaching a critical point). Therefore, the selection of this material can effectively absorb heat from seawater, thereby lowering its own temperature.

[0062] Furthermore, after the seawater is transported to the seawater heat exchanger, the seawater and supercritical carbon dioxide flow through different channels inside the seawater heat exchanger, and the two are isolated and heat is transferred through the heat exchange wall. When the supercritical carbon dioxide flows through these channels, a temperature difference is formed between it and the seawater, and a heat exchange reaction is carried out with the seawater based on the temperature difference.

[0063] Step S202, transporting the first cooled supercritical carbon dioxide to the terminal precision air conditioner for evaporation reaction to obtain the second cooled supercritical carbon dioxide.

[0064] Specifically, the temperature of the first cooled supercritical carbon dioxide after heat exchange in the seawater heat exchanger has been significantly reduced, but it is still in a supercritical state.

[0065] Furthermore, the cooled supercritical carbon dioxide is transported to the terminal precision air conditioner for further evaporation reaction.

[0066] In an optional embodiment, an evaporator is provided in the terminal precision air conditioner. When the first cooled supercritical carbon dioxide reaches the terminal precision air conditioner, it enters the above-mentioned evaporator to evaporate the first cooled supercritical carbon dioxide. Inside the evaporator, the supercritical carbon dioxide will be subjected to certain pressure and temperature changes, thereby triggering an evaporation reaction to obtain a second cooled supercritical carbon dioxide after the evaporation reaction.

[0067] Step S203, sending the air reacting with the second cooled supercritical carbon dioxide into the server of the submarine data center to cool the server.

[0068] Specifically, after the cooling air obtained in step S202 is lowered to a preset temperature, it is sent into the submarine data center to dissipate heat and cool the server.

[0069] Optionally, cooling air is passed through a radiator or heat exchanger that flows through the server to absorb heat generated by the server.

[0070] In an optional implementation, the above step S203 includes:

[0071] exchanging heat between the second cooled supercritical carbon dioxide and the air in the computer room of the submarine data center to generate cooling air with a temperature lower than a third preset temperature;

[0072] Cooling air is sent to the servers of the submarine data center to cool the servers.

[0073] Since the evaporation reaction is an endothermic process, it absorbs heat from the surrounding environment. Therefore, when the supercritical carbon dioxide evaporates in the evaporator, the air in the computer room is cooled to form cooling air below the third preset temperature.

[0074] Finally, the cooling air is sent into the server by the terminal air-conditioning fan to cool the server.

[0075] Optionally, the third preset temperature is 27°C, and therefore, the temperature of the cooling air is ≤27°C.

[0076] In summary, supercritical carbon dioxide and low-temperature seawater first undergo a heat exchange reaction in a seawater heat exchanger. Based on the special physical properties of supercritical carbon dioxide, as a special material state that is neither gaseous nor liquid at a specific pressure and temperature, it has good heat conduction efficiency and cooling capacity, making the heat exchange process very efficient. During the heat exchange process, supercritical carbon dioxide absorbs the coldness of seawater, the temperature is significantly reduced, and it is converted into the first cooling supercritical carbon dioxide.

[0077] The first cooled supercritical carbon dioxide after preliminary cooling is transported to the refrigeration module. The refrigeration module contains a throttle valve and an evaporator arranged inside the terminal precision air conditioner to further reduce the temperature of the supercritical carbon dioxide. The throttle valve adjusts the flow and pressure of the supercritical carbon dioxide so that it is in the best evaporation condition when it enters the evaporator. In the evaporator, the first cooled supercritical carbon dioxide evaporates, absorbs a large amount of heat, and is converted into the second cooled supercritical carbon dioxide with a lower temperature.

[0078] Finally, the second cooling supercritical carbon dioxide is transported to the computer room of the submarine data center, and exchanges heat with the hot air in the computer room, taking away the heat from the air, and generating cooling air that meets the third preset temperature. The cooling air is evenly sent to the heat dissipation area of ​​the server through the air circulation system inside the data center, effectively reducing the operating temperature of the server and ensuring the stable operation of the data center. The entire cooling process is not only efficient and environmentally friendly, but also greatly reduces the energy consumption and operating costs of the data center.

[0079] In an optional embodiment, when the temperature of the seawater is higher than a first preset temperature, the low-pressure ratio compressor operates in a first pressurization mode so that the compression ratio of the low-pressure ratio compressor reaches a preset value.

[0080] In actual application scenarios, the supercritical carbon dioxide cooling system is mainly divided into two cooling conditions. First, when the seawater temperature is high in summer, that is, when the seawater is higher than the second preset temperature, the low-pressure ratio compressor runs at about 1.2 times the normal compression ratio to compress the supercritical carbon dioxide, so that the temperature of the carbon dioxide entering the heat exchanger reaches about 35-40°C, and the heat exchange temperature difference with the seawater of 25-30°C is generated, and the heat exchange and cooling are carried out at equal pressure. The supercritical carbon dioxide after cooling passes through the throttle valve and the evaporator of the terminal precision air conditioner, evaporates to produce carbon dioxide at about 20°C, and exchanges heat with the air in the computer room, thereby generating cold air of ≤27°C to provide cooling for the server.

[0081] The second operating condition is applicable to winter, when the seawater temperature is lower than or equal to the first preset temperature. The low-pressure ratio compressor operates at a normal compression ratio of about 1.1 times, and transports the compressed supercritical carbon dioxide into the heat exchanger for isobaric heat exchange with low-temperature seawater. The cooled carbon dioxide passes through the evaporator of the terminal precision air conditioner and the air in the computer room for heat exchange, thereby generating cold air ≤27°C to provide cooling to the server.

[0082] In summary, the supercritical carbon dioxide cooling method provided by the embodiment of the present invention abandons the traditional winding pipelines. Compared with various long-distance refrigerant transportation arranged at the end, the energy consumption is very small. The system only needs to use a low-pressure ratio compressor to operate at a very low frequency to drive the transportation of supercritical carbon dioxide. On this basis, by distinguishing between summer and winter, that is, determining the operating frequency of the low-pressure ratio compressor according to whether the seawater is lower than the first preset temperature, when the water temperature is low, there is no need to add an additional drive device to the supercritical carbon dioxide cooling system, which is equivalent to the low-pressure ratio compressor being able to achieve multiple uses of one pump to further reduce energy consumption.

[0083] In an optional embodiment, seawater is transported into the heat exchanger by a lift pump for heat exchange reaction.

[0084] The lifting pump unit is provided to provide the necessary power for the seawater heat exchanger, ensuring that the seawater can be effectively transported to the heat exchanger for heat exchange.

[0085] In an optional embodiment, the lifting pump unit is disposed underwater, which can directly utilize the natural pressure of seawater, reducing the static pressure head that the lifting pump needs to overcome during the pumping process, thereby reducing energy consumption. At the same time, the underwater seawater pipeline is short and simple, which reduces pipeline resistance and further reduces the operating power consumption of the pump.

[0086] In addition, being set underwater reduces the temperature loss of seawater during transportation, ensuring that the temperature of seawater entering the heat exchanger is relatively stable, thereby improving the heat exchange efficiency.

[0087] In an optional embodiment, the method further includes:

[0088] The seawater after the heat exchange reaction is discharged into the sea.

[0089] The supercritical carbon dioxide cooling method provided in the embodiment of the present invention is provided with a lifting pump which is not only responsible for providing power for the seawater heat exchange system and transporting the low-temperature seawater to the heat exchanger and the supercritical carbon dioxide system for heat exchange, but also responsible for discharging the seawater after heat exchange into the sea to realize heat transfer and recycling of natural resources.

[0090] The embodiment of the present invention also provides a computer device, see Figure 3 , Figure 3 is a schematic diagram of the structure of a computer device provided by an optional embodiment of the present invention, such as Figure 3 As shown, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components are connected to each other using different buses for communication, and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 3 A processor 10 is taken as an example.

[0091] The processor 10 may be a central processing unit, a network processor or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0092] The memory 20 stores instructions executable by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

[0093] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0094] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive; the memory 20 may also include a combination of the above types of memory.

[0095] The computer device also includes an input device 30 and an output device 40. The processor 10, the memory 20, the input device 30 and the output device 40 may be connected via a bus or other means. Figure 3 The example of connecting through bus is taken in the following.

[0096] The input device 30 can receive input digital or character information, and generate key signal input related to the user settings and function control of the computer device, such as a touch screen, a keypad, a mouse, a track pad, a touch pad, an indicator bar, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 may include a display device, an auxiliary lighting device (e.g., an LED) and a tactile feedback device (e.g., a vibration motor), etc. The above-mentioned display device includes but is not limited to a liquid crystal display, a light emitting diode, a display and a plasma display. In some optional embodiments, the display device can be a touch screen.

[0097] The embodiment of the present invention also provides a computer-readable storage medium. The method according to the embodiment of the present invention can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor, or hardware, the method shown in the above embodiment is implemented.

[0098] A part of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the existence of the computer program instruction in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc., and accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium accessible to the computer.

[0099] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A supercritical carbon dioxide cooling system, characterized in that: The system is applied to a submarine data center, and the system comprises: A compression module, including a low pressure ratio compressor, for compressing and delivering supercritical carbon dioxide so that the supercritical carbon dioxide meets a preset temperature and is delivered to a seawater heat exchanger; The seawater heat exchanger is used to accommodate the seawater and the supercritical carbon dioxide meeting the preset temperature to perform heat exchange, obtain the first cooled supercritical carbon dioxide, and discharge the seawater after the reaction; The refrigeration module includes a throttle valve and an evaporator. The evaporator is used to evaporate the first cooled supercritical carbon dioxide to obtain second cooled supercritical carbon dioxide, and transport it to the submarine data center to cool down the servers of the submarine service center.

2. The system according to claim 1, characterized in that The system further comprises: The lifting pump unit is used to provide power to the seawater heat exchanger to transport seawater to the seawater heat exchanger.

3. The system according to claim 2, characterized in that The lifting pump unit is arranged below the water surface and is connected to the seawater heat exchanger through a seawater pipeline.

4. A supercritical carbon dioxide cooling method, characterized in that: The supercritical carbon dioxide cooling system applied to any one of claims 1 to 3, the method comprising: The supercritical carbon dioxide compressed by the low-pressure ratio compressor is subjected to a heat exchange reaction with the delivered seawater, so that the supercritical carbon dioxide is cooled to obtain a first cooled supercritical carbon dioxide; The first cooled supercritical carbon dioxide is transported to a terminal precision air conditioner for evaporation reaction to obtain a second cooled supercritical carbon dioxide; The air reacting with the second cooled supercritical carbon dioxide is sent to the servers of the submarine data center to cool the servers.

5. The method according to claim 4, characterized in that When the temperature of the seawater is higher than a first preset temperature, the low-pressure ratio compressor operates in a first pressurizing mode so that the compression ratio of the low-pressure ratio compressor reaches a preset value.

6. The method according to claim 5, characterized in that The seawater is transported into the heat exchanger by a lifting pump for heat exchange reaction.

7. The method according to claim 6, characterized in that The step of sending the air reacting with the second cooling supercritical carbon dioxide into the server of the submarine data center to cool the server includes: exchanging heat between the second cooled supercritical carbon dioxide and the air in the computer room of the submarine data center to generate cooling air with a temperature lower than a third preset temperature; The cooling air is sent to the servers of the submarine data center to cool the servers.

8. The method according to claim 7, characterized in that The method further comprises: The seawater after the heat exchange reaction is discharged into the sea.

9. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the supercritical carbon dioxide cooling method according to any one of claims 4 to 8 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the supercritical carbon dioxide cooling method according to any one of claims 4 to 8.

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