Refrigeration system, data center, refrigeration method, device and computer program product

Abstract

The invention provides a refrigerating system, a data center, a refrigerating method, a refrigerating device, electronic equipment, a storage medium and a computer program product, relates to the technical field of computers, in particular to the technical field of refrigerating systems of artificial intelligence and large model data centers, and can be applied to a refrigerating scene of the data center. According to the specific implementation scheme, the refrigerating system comprises a first refrigerating subsystem and a second refrigerating subsystem, the first refrigerating subsystem comprises a first loop and a second loop for cooling liquid to flow, the first loop comprises cooling equipment, heat exchange equipment and a first liquid pump, and the second loop comprises the heat exchange equipment, a first coil pipe and a second liquid pump; the second refrigeration subsystem comprises a third loop for cooling liquid to flow, and the third loop comprises a condenser, a second coil pipe and a third liquid pump. According to the outdoor temperature corresponding to the thermal load source, the expected operation states corresponding to the first refrigeration subsystem and the second refrigeration subsystem can be determined, so that the double-cold-source system is controlled to operate independently, and the reliability of the refrigeration system is improved; moreover, a natural cold source can be fully utilized, the mechanical refrigeration requirement is reduced, and the refrigeration efficiency is improved while the energy consumption is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of computer technology, specifically to the field of artificial intelligence and refrigeration system technology for large-scale data centers, and more particularly to a refrigeration system, a data center, a refrigeration method, a refrigeration device, an electronic device, a storage medium, and a computer program product, which can be applied to refrigeration scenarios in data centers. Background Art

[0002] With the rapid development of cloud computing, artificial intelligence, supercomputing and other technologies, especially large-scale model technology, the power density of data center cabinets is also increasing year by year. At the same time, the heat dissipation requirements of data centers are also getting higher and higher. High-power density cabinets will generate a lot of heat. If the heat dissipation is not timely and sufficient, it will have a serious impact on the stability and reliability of the data center. The current heat dissipation system has low heat dissipation efficiency. Summary of the invention

[0003] The present disclosure provides a refrigeration system, a data center, a method, an apparatus, an electronic device, a storage medium, and a computer program product.

[0004] According to a first aspect, a refrigeration system is provided, comprising: a first refrigeration subsystem, the first refrigeration subsystem comprising a first loop and a second loop for flowing a cooling liquid, the first loop comprising a cooling device, a heat exchange device and a first liquid pump, the second loop comprising a heat exchange device, a first coil and a second liquid pump; a second refrigeration subsystem, the second refrigeration subsystem comprising a third loop for flowing a cooling liquid, the third loop comprising a condenser, a second coil and a third liquid pump.

[0005] According to a second aspect, a data center is provided, comprising: at least one row of server cabinets; at least one wind wall corresponding to the at least one row of server cabinets, each wind wall being arranged in parallel with the corresponding server cabinet, each wind wall comprising a plurality of first coils and second coils in a refrigeration system, wherein the refrigeration system is the refrigeration system described in any implementation of the first aspect above.

[0006] According to a third aspect, a refrigeration method is provided, comprising: determining an outdoor temperature corresponding to a heat load source; determining, based on the outdoor temperature, respective desired operating states corresponding to a first refrigeration subsystem and a second refrigeration subsystem, wherein the first refrigeration subsystem comprises a first loop and a second loop for flow of cooling liquid, the first loop comprising a cooling device, a heat exchange device and a first liquid pump, the second loop comprising a heat exchange device, a first coil and a second liquid pump, the second refrigeration subsystem comprises a third loop for flow of cooling liquid, the third loop comprising a condenser, a second coil and a third liquid pump; controlling the first refrigeration subsystem and the second refrigeration subsystem to operate according to respective desired operating states corresponding to the heat load source to cool the heat load source.

[0007] According to a fourth aspect, a refrigeration device is provided, comprising: a temperature determination unit, configured to determine an outdoor temperature corresponding to a heat load source; a state determination unit, configured to determine the expected operating states corresponding to each of a first refrigeration subsystem and a second refrigeration subsystem according to the outdoor temperature, wherein the first refrigeration subsystem comprises a first loop and a second loop for the flow of cooling liquid, the first loop comprises a cooling device, a heat exchange device and a first liquid pump, the second loop comprises a heat exchange device, a first coil and a second liquid pump, the second refrigeration subsystem comprises a third loop for the flow of cooling liquid, the third loop comprises a condenser, a second coil and a third liquid pump; an operation control unit, configured to control the first refrigeration subsystem and the second refrigeration subsystem to operate in accordance with the expected operating states corresponding to each other to cool the heat load source.

[0008] According to the fifth aspect, an electronic device is provided, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the method described in any implementation manner of the third aspect.

[0009] According to a sixth aspect, there is provided a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to cause a computer to execute the method described in any implementation of the third aspect.

[0010] According to a seventh aspect, a computer program product is provided, comprising: a computer program, which implements the method described in any implementation manner of the third aspect when executed by a processor.

[0011] According to the technology disclosed in the present invention, a refrigeration system, method and device are provided, wherein the refrigeration system includes a first refrigeration subsystem and a second refrigeration subsystem which are independent of each other, wherein the first refrigeration subsystem includes a first loop and a second loop for the flow of cooling liquid, wherein the first loop includes a cooling device, a heat exchange device and a first liquid pump, and the second loop includes a heat exchange device, a first coil and a second liquid pump; the second refrigeration subsystem includes a third loop for the flow of cooling liquid, wherein the third loop includes a condenser, a second coil and a third liquid pump; according to the outdoor temperature corresponding to the heat load source, the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem can be determined respectively, so as to control the independent operation of the dual cold source system, thereby improving the reliability of the refrigeration system; and, it can make full use of the natural cold source, reduce the demand for mechanical refrigeration, and improve the refrigeration efficiency while reducing energy consumption.

[0012] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure.

[0014] Figure 1 is an exemplary system structure diagram of a refrigeration system of the present disclosure;

[0015] Figure 2 is an exemplary structural diagram of a data center of the present disclosure;

[0016] Figure 3 is an exemplary system architecture diagram in which an embodiment of the present disclosure may be applied;

[0017] Figure 4 is a flow chart of an embodiment of a refrigeration method according to the present disclosure;

[0018] Figure 5 is a schematic diagram of an application scenario of the refrigeration method according to this embodiment;

[0019] Figure 6 is a structural diagram of an embodiment of a refrigeration device according to the present disclosure;

[0020] Figure 7 It is a schematic diagram of the structure of a computer system suitable for implementing the embodiments of the present disclosure. DETAILED DESCRIPTION

[0021] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0022] In the technical solution of the present disclosure, the collection, storage, use, processing, transmission, provision and disclosure of user personal information involved are in compliance with the provisions of relevant laws and regulations and do not violate public order and good morals.

[0023] Figure 1 An exemplary architecture 100 of a refrigeration system to which the present disclosure may be applied is shown.

[0024] like Figure 1As shown, the refrigeration system 100 includes: a first refrigeration subsystem 101, the first refrigeration subsystem includes a first loop and a second loop for cooling liquid to flow, the first loop includes a cooling device 1011, a heat exchange device 1012 and a first liquid pump 1013, and the second loop includes a heat exchange device, a first coil 1014 and a second liquid pump 1015; a second refrigeration subsystem 102, the second refrigeration subsystem includes a third loop for cooling liquid to flow, and the third loop includes a condenser 1021, a second coil 1022 and a third liquid pump 1023.

[0025] In the first refrigeration subsystem, the first liquid pump is used to provide pressure for the coolant in the first loop so that it circulates in the first loop; the second liquid pump is used to provide pressure for the coolant in the second loop so that it circulates in the second loop.

[0026] The working principle of the first refrigeration subsystem is as follows: the cooling liquid in the first coil exchanges heat with the heat load source, causing the cooling liquid temperature to rise; the cooling liquid with the increased temperature flows to the heat exchange device through the second loop, exchanges heat with the low-temperature cooling liquid in the first loop, so that the cooling liquid temperature in the second loop decreases, so that it can continue to exchange heat with the heat load source in the subsequent cycle. The cooling liquid in the first loop increases in temperature after flowing through the heat exchange device, and its temperature is reduced by the cooling device, so that it continues to exchange heat with the cooling liquid in the second loop in the heat exchange device in the subsequent cycle.

[0027] Cooling equipment is equipment used to reduce temperature or remove heat, such as coolers, heat sinks, etc. Heat exchange equipment refers to equipment that transfers heat from a hot fluid to a cold fluid, such as shell and tube heat exchangers, bellows heat exchangers, and volumetric heat exchangers.

[0028] In the second refrigeration subsystem, the third liquid pump is used to provide pressure for the coolant in the third loop so that the coolant circulates in the third loop.

[0029] The working principle of the second refrigeration subsystem is as follows: the coolant in the second coil exchanges heat with the heat load source, causing the coolant temperature to rise; the coolant with increased temperature flows to the condenser through the third loop, so that the coolant temperature in the second loop decreases, so as to continue to exchange heat with the heat load source in subsequent cycles.

[0030] Coolant is generally composed of water, antifreeze and additives. According to the different antifreeze ingredients, coolant can be divided into the following main types: alcohol coolant, glycerin coolant, ethylene glycol coolant, propylene glycol coolant. The coolant in the first loop, the second loop and the third loop can be the same or different.

[0031] In this embodiment, the first refrigeration subsystem and the second refrigeration subsystem in the refrigeration system operate independently, which improves the reliability of the refrigeration system; and can make full use of natural cold sources, reduce mechanical refrigeration requirements, and improve refrigeration efficiency while reducing energy consumption.

[0032] In some optional implementations of this embodiment, the first refrigeration subsystem further includes a first electronic valve 1016 and a second electronic valve 1017. The first electronic valve is disposed in the second loop at the liquid inlet end of the first coil; the second electronic valve is disposed in the second loop at the liquid outlet end of the first coil.

[0033] When the first electronic valve and the second electronic valve are closed, the coolant in the first refrigeration subsystem cannot flow; when the first electronic valve and the second electronic valve are opened, the coolant in the first refrigeration subsystem can circulate.

[0034] By controlling the opening and closing of the first electronic valve and the second electronic valve, the operating state of the first refrigeration subsystem can be flexibly controlled, thereby improving the control flexibility and convenience of the first refrigeration subsystem.

[0035] In some optional implementations of this embodiment, the cooling device is a cooling tower, and the heat exchange device is a plate heat exchanger.

[0036] When the cooling equipment is a cooling tower, the refrigeration system has benefits in terms of efficient heat dissipation, equipment life, energy saving, environmental protection and safety.

[0037] In terms of efficient heat dissipation, the cooling tower dissipates the heat generated by the coolant after it is compressed in the compressor into the atmosphere through evaporation, thereby effectively reducing the temperature of the coolant. This ensures that the coolant can continuously and effectively absorb and release heat during the refrigeration cycle, improving the efficiency of the refrigeration system.

[0038] In terms of extending equipment life, by lowering the temperature of the coolant, cooling towers are able to reduce the load on other critical components in the refrigeration system, thereby extending the service life of these devices.

[0039] In terms of energy conservation and environmental protection, cooling towers use the principle of natural evaporation to dissipate heat without consuming additional energy, which meets the requirements of energy conservation and environmental protection. At the same time, by accurately controlling the temperature of the cooling medium, cooling towers can reduce energy waste and reduce operating costs.

[0040] In terms of safety, in the refrigeration system, if the temperature of the coolant is too high, it may cause damage or explosion of the equipment. The cooling tower improves the safety of the refrigeration system by controlling the temperature of the coolant and keeping it within a safe range.

[0041] When the heat exchange device is a plate heat exchanger, the refrigeration system has benefits in terms of heat transfer, structure, energy saving, environmental protection and maintenance.

[0042] In terms of heat transfer, the plate heat exchanger has a unique heat transfer channel and corrugated plate design, which makes the heat exchange process more efficient. This means that under the same heat transfer area, the plate heat exchanger can transfer more heat, thereby improving the efficiency of the refrigeration system.

[0043] In terms of structure, the plate heat exchanger is small in size and light in weight, which makes it easy to install and maintain. This allows the refrigeration system to be arranged more compactly, saving space and reducing installation costs.

[0044] In terms of energy conservation and environmental protection, the high efficiency and compact design of plate heat exchangers enable them to reduce energy consumption during operation. At the same time, due to the small impact on the environment during its manufacturing and use, it meets the requirements of modern industrial energy conservation and environmental protection.

[0045] In terms of maintenance, the disassembly and cleaning of the plate heat exchanger is relatively simple and convenient, which reduces the maintenance cost of the refrigeration system. Regular cleaning and maintenance can maintain the heat transfer efficiency of the plate heat exchanger and extend its service life.

[0046] In some optional implementations of this embodiment, the second refrigeration subsystem further includes a compressor 1024. The compressor is disposed in the third loop and is located between the second coil and the condenser.

[0047] The main function of the compressor in the refrigeration system is to suck in low-temperature and low-pressure coolant gas, increase its temperature and pressure through compression, and then send it to the condenser for heat exchange.

[0048] In this implementation, the compressor ensures the circulation of the coolant in the refrigeration system by providing the necessary power and pressure, which helps to improve the overall efficiency and refrigeration capacity of the refrigeration system.

[0049] In some optional implementations of this embodiment, the second refrigeration subsystem further includes a first bypass valve 1025 and a second bypass valve 1026. The first bypass valve is disposed in the third loop and connected in parallel with the compressor. The second bypass valve is disposed in the third loop and connected in parallel with the third liquid pump.

[0050] The first bypass valve is connected in parallel with the compressor, so that the third loop includes two branches here, that is, the coolant can flow through the first bypass valve and the compressor. Through the first bypass valve, the path of the coolant can be flexibly controlled.

[0051] The second bypass valve is connected in parallel with the third liquid pump, so that the third loop includes two branches, that is, the coolant can flow through the second bypass valve and the third liquid pump. The second bypass valve can flexibly control the path of the coolant.

[0052] In this implementation, by controlling the opening and closing of the first bypass valve and the second bypass valve, the operating state of the second refrigeration subsystem can be flexibly controlled, thereby improving the control flexibility and convenience of the second refrigeration subsystem.

[0053] In some optional implementations of this embodiment, the compressor is a magnetic levitation compressor, and the condenser is an evaporative condenser.

[0054] Compared with the turbine and screw compressors used in traditional solutions, the magnetic levitation compressor can support low compression ratio operation and make maximum use of natural cooling sources. The magnetic levitation compressor compresses the low-temperature and low-pressure gaseous coolant into high-temperature and high-pressure superheated steam. The magnetic levitation compressor is connected to the evaporative condenser. The coolant in the evaporative condenser undergoes evaporation phase change and exchanges heat with the coolant vapor in the tube, converting the coolant vapor from gas to liquid, and then pressurized and transported to the second coil by the third liquid pump.

[0055] When the condenser is an evaporative condenser, the refrigeration system has benefits in terms of water saving, energy saving and structure.

[0056] In terms of water conservation, the evaporative condenser fully utilizes the latent heat of vaporization of water for cooling, and its theoretical water consumption is only 1% of that of the water-cooled condenser. Taking into account factors such as splash loss, sewage discharge and water replacement, the actual water consumption is only 5% to 10% of that of the water-cooled condenser, which greatly reduces water loss.

[0057] In terms of energy saving, the condensation temperature of the evaporative condenser is lower, which is due to the fact that it is limited by the ambient wet bulb temperature (usually 8 to 14°C lower than the dry bulb temperature) and the negative pressure environment caused by the upper fan. Compared with the air-cooled condenser, the evaporative condenser can significantly reduce the condensation temperature, thereby reducing the power consumption per unit of cooling capacity, and the energy saving effect is obvious.

[0058] In terms of structure, the evaporative condenser does not need a cooling tower, so the entire device is compact, small in size, and occupies less space. This makes the installation of the equipment more convenient and also reduces the workload of daily maintenance.

[0059] Continue to refer Figure 2 , showing an exemplary structural diagram of the data center of the present disclosure.

[0060] like Figure 2As shown, the data center 200 includes: at least one row of server cabinets 201; at least one wind wall 202 corresponding to the at least one row of server cabinets, each wind wall is arranged in parallel with the corresponding server cabinet, and each wind wall includes a first coil and a second coil in a plurality of refrigeration systems. The refrigeration system is the refrigeration system shown in any implementation of the above embodiment 100.

[0061] A row of server cabinets is arranged in parallel with a row of wind walls, and the heat generated by the server cabinets is absorbed by the first coils and / or the second coils in the wind walls.

[0062] The wind wall can be specifically manifested as multiple (column-level) wind wall air conditioners. The wind wall air conditioners adopt a unit modular design. Each column-level wind wall air conditioner corresponds to two server cabinets as a unit, mainly for cooling the two server cabinets. Each unit can be installed independently and can be connected to adjacent units.

[0063] In some optional implementations of this embodiment, the distance between the first coil in the wind wall and the corresponding server cabinet is smaller than the distance between the second coil in the wind wall and the corresponding server cabinet.

[0064] In some cases, the first refrigeration subsystem and the second refrigeration subsystem in the refrigeration system may operate simultaneously. In this case, the hot air generated by a row of server cabinets first exchanges heat with the first coil and then exchanges heat with the second coil.

[0065] In some optional implementations of this embodiment, each wind wall further includes a filtering device and a fan; the filtering device is disposed close to the corresponding server cabinet, and the fan is disposed away from the corresponding server cabinet.

[0066] The hot air blown out from the server cabinet is sucked into the double-coil column wind wall, and passes through the filter device, the first coil, the second coil and the fan in sequence, thereby improving the cooling efficiency of the data center.

[0067] In some implementations, in order to improve the controllability of the refrigeration process, electronic expansion valves are provided on the first coil and the second coil, which can flexibly control the flow of the coolant in the coil to accurately control the operation of the refrigeration system.

[0068] Continue to refer Figure 3 , showing an exemplary architecture 300 to which the refrigeration method and apparatus of the present disclosure can be applied.

[0069] like Figure 3As shown, the system architecture 300 may include terminal devices 301, 302, 303, a network 304 and a server 305. The communication connection between the terminal devices 301, 302, 303 constitutes a topological network, and the network 304 is used to provide a medium for the communication link between the terminal devices 301, 302, 303 and the server 305. The network 304 may include various connection types, such as wired, wireless communication links or optical fiber cables, etc.

[0070] Terminal devices 301, 302, 303 may be hardware devices or software that support network connection for data interaction and data processing. When terminal devices 301, 302, 303 are hardware, they may be various electronic devices that support network connection, information acquisition, interaction, display, processing and other functions, including but not limited to various devices such as electronic valves, bypass valves, cooling equipment, heat exchange equipment, condensers, compressors, etc. in refrigeration systems. When terminal devices 301, 302, 303 are software, they may be installed in the electronic devices listed above. It may be implemented as multiple software or software modules, for example, for providing distributed services, or it may be implemented as a single software or software module. No specific limitation is made here.

[0071] Server 305 may be a server that provides various services, for example, a background processing server that determines the expected operating state of each of terminal devices 301, 302, and 303 according to the outdoor temperature corresponding to the heat load source to control the operation of the refrigeration system. As an example, server 305 may be a cloud server.

[0072] It should be noted that the server can be hardware or software. When the server is hardware, it can be implemented as a distributed server cluster consisting of multiple servers, or it can be implemented as a single server. When the server is software, it can be implemented as multiple software or software modules (for example, software or software modules used to provide distributed services), or it can be implemented as a single software or software module. No specific limitation is made here.

[0073] It should also be noted that the refrigeration method provided in the embodiments of the present disclosure is generally executed by a server, but the possibility of being executed by a terminal device, or being executed by a server and a terminal device in cooperation with each other is not excluded. Accordingly, the various parts (such as various units) included in the refrigeration device can be all set in the server, or all set in the terminal device, or can be set in the server and the terminal device respectively.

[0074] It should be understood that Figure 3The number of terminal devices, networks, and servers in the system is only illustrative. Any number of terminal devices, networks, and servers may be provided as required. When the electronic device on which the cooling method is running does not need to perform data transmission with other electronic devices, the system architecture may only include the electronic device (e.g., terminal device or server) on which the cooling method is running.

[0075] Please refer to Figure 4 , Figure 4 This is a flow chart of a refrigeration method provided by an embodiment of the present disclosure. In process 400, the following steps are included:

[0076] Step 401, determining the outdoor temperature corresponding to the heat load source.

[0077] In this embodiment, the execution subject of the refrigeration method (for example, Figure 3 The server in the heat load source can determine the outdoor temperature corresponding to the heat load source.

[0078] For example, the execution subject may determine the outdoor wet-bulb temperature corresponding to the heat load source by a wet-bulb thermometer. For another example, the execution subject may calculate the outdoor wet-bulb temperature corresponding to the heat load source based on the dry-bulb temperature and relative humidity. The outdoor temperature corresponding to the heat load source is generally the outdoor temperature of the external environment near the heat load source.

[0079] Heat load source refers to the source or equipment that generates or provides heat load, such as data centers, mechanical equipment used in industrial production, etc.

[0080] Step 402: Determine the expected operating states of the first refrigeration subsystem and the second refrigeration subsystem respectively according to the outdoor temperature.

[0081] In this embodiment, the execution subject may determine the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem respectively according to the outdoor temperature.

[0082] Continue to refer Figure 1 The first refrigeration subsystem includes a first loop and a second loop for cooling liquid to flow, the first loop includes a cooling device, a heat exchange device and a first liquid pump, the second loop includes a heat exchange device, a first coil and a second liquid pump, and the second refrigeration subsystem includes a third loop for cooling liquid to flow, the third loop includes a condenser, a second coil and a third liquid pump.

[0083] As an example, a correspondence table is set in the above-mentioned execution entity or an electronic device connected to the above-mentioned execution entity for communication, and the correspondence table includes the correspondence between each outdoor temperature and the expected operating status of each device in the first refrigeration subsystem and each device in the second refrigeration subsystem.

[0084] After the outdoor temperature is determined, the expected operating states corresponding to the devices in the first refrigeration subsystem and the second refrigeration subsystem may be determined through the corresponding relationship table.

[0085] As another example, the execution entity may determine the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem respectively according to the outdoor temperature and the current refrigeration effect of the heat load source, so as to achieve an ideal refrigeration effect on the heat load source based on the expected operating states.

[0086] Continue to refer Figure 1 In some optional implementations of the present embodiment, the second refrigeration subsystem further includes a compressor, a first bypass valve and a second bypass valve. The compressor is arranged in the third loop and is located between the second coil and the condenser. The first bypass valve is arranged in the third loop and is connected in parallel with the compressor. The second bypass valve is arranged in the third loop and is connected in parallel with the third liquid pump.

[0087] In this implementation, the execution subject may perform step 402 as follows:

[0088] In response to the outdoor temperature being less than the first preset temperature, the desired operating state of the second refrigeration subsystem is determined as follows: the first bypass valve is opened, the second bypass valve is closed, the condenser operates in a natural cooling and drying mode, the compressor is turned off, and the third liquid pump is turned on.

[0089] The first preset temperature can be set according to actual conditions, for example, -19°C.

[0090] In this case, the flow direction of the coolant in the second refrigeration subsystem is: second coil -> first bypass valve -> condenser -> third liquid pump -> second coil.

[0091] The natural cooling and drying mode of the condenser generally operates in a low-temperature environment. Its working principle is: in this mode, the spray water circulation system of the evaporative condenser (including the water pump and fan used to achieve liquid spraying) does not need to operate. Due to the low external ambient temperature, the air has a good condensation effect on the condenser, so there is no need for additional water spraying to enhance heat dissipation. At this time, the condenser mainly relies on natural air convection or forced ventilation to remove heat and achieve condensation of the coolant.

[0092] In this implementation, an expected operating state of the second refrigeration subsystem is provided when the outdoor temperature is lower than the first preset temperature, so that the operation of the second refrigeration subsystem is adapted to the low temperature environment, and the refrigeration effect is ensured while operating at low power consumption.

[0093] In some optional implementations of this embodiment, the execution subject may perform step 402 in the following manner:

[0094] In response to the outdoor temperature being greater than or equal to the first preset temperature and less than the second preset temperature, the expected operating state of the second refrigeration subsystem is determined as: the first bypass valve is opened, the second bypass valve is closed, the condenser operates in natural cooling and wet mode, the compressor is turned off, and the third liquid pump is turned on.

[0095] The second preset temperature can be set according to actual conditions, for example, 11°C.

[0096] In this case, the flow direction of the coolant in the second refrigeration subsystem is still: second coil -> first bypass valve -> condenser -> third liquid pump -> second coil. However, the operation mode of the condenser is different from the operation mode when the outdoor temperature is lower than the first preset temperature, and the condenser operates in a natural cooling and humidification mode.

[0097] When the ambient temperature rises to a certain level, the evaporative condenser will switch to the natural cooling and wet mode. The working principle of the condenser's natural cooling and wet mode is as follows: In this mode, the spray water circulation system of the evaporative condenser operates. Water is sprayed onto the surface of the condenser tube bundle to form a continuous and uniform water film. At the same time, the fan forces air to pass over the surface of the heat exchanger, prompting the water film to strengthen the evaporation heat absorption, thereby taking away the heat and realizing the condensation of the coolant.

[0098] In this implementation, an expected operating state of the second refrigeration subsystem is provided when the outdoor temperature is greater than or equal to the first preset temperature and less than the second preset temperature, so that the operation of the second refrigeration subsystem is adapted to the medium temperature environment, ensuring the cooling effect while operating at lower power consumption.

[0099] In some optional implementations of this embodiment, the execution subject may perform step 402 in the following manner:

[0100] In response to the outdoor temperature being greater than or equal to the second preset temperature, the expected operating state of the second refrigeration subsystem is determined as: the first bypass valve is closed, the second bypass valve is closed, the condenser operates in natural cooling and wet mode, the compressor is turned on, and the third liquid pump is turned on.

[0101] In this case, the flow direction of the coolant in the second refrigeration subsystem is: second coil -> compressor -> condenser -> third liquid pump -> second coil. The condenser still operates in natural cooling and wet mode.

[0102] When the outdoor temperature is high, the condenser combined with the compressor operating in natural cooling and wet mode ensures the cooling efficiency of the refrigeration system.

[0103] Continue to refer Figure 1In some optional implementations of the present embodiment, the first refrigeration subsystem further includes a first electronic valve and a second electronic valve, the first electronic valve being arranged in the second loop and located at the liquid inlet end of the first coil, and the second electronic valve being arranged in the second loop and located at the liquid outlet end of the first coil.

[0104] In this implementation, the execution subject may perform step 402 as follows:

[0105] In response to the outdoor temperature being less than the third preset temperature, the desired operating state of the second refrigeration subsystem is determined as: the first electronic valve is on, the second electronic valve is on, the first liquid pump is on, the second liquid pump is on, and the cooling tower is on.

[0106] The third preset temperature can be set according to actual conditions, for example, 21°C.

[0107] Driven by the first liquid pump, the coolant in the first loop circulates in the first loop; driven by the second liquid pump, the coolant in the second loop circulates in the second loop. The coolant in the first loop exchanges heat with the coolant in the second loop in the heat exchange device.

[0108] In this implementation, when the outdoor temperature is lower than the third preset temperature, the second refrigeration subsystem operates normally, cooling the heat load source based on the natural cold source, thereby ensuring refrigeration efficiency under low power consumption operation.

[0109] In some optional implementations of this embodiment, the execution subject may perform step 402 in the following manner:

[0110] In response to the outdoor temperature being greater than or equal to the third preset temperature, the desired operating state of the second refrigeration subsystem is determined as: the first electronic valve is closed, the second electronic valve is closed, the first liquid pump is closed, the second liquid pump is closed, and the cooling tower is closed.

[0111] When the outdoor temperature is high, the natural cold source based on the cooling tower can no longer cool the heat load source, and the first refrigeration subsystem needs to be shut down to reduce the operating power consumption of the refrigeration system.

[0112] In order to further illustrate the operating state of the refrigeration system at various temperatures, taking the first preset temperature of -19°C, the second preset temperature of 11°C, and the third preset temperature of 21°C as an example, the following description is given:

[0113] 1. When the outdoor temperature T<-19℃:

[0114] The operating status of each device in the first refrigeration subsystem is:

[0115] The first electronic valve is opened, the second electronic valve is opened, the first liquid pump is opened, the second liquid pump is opened, and the cooling tower is opened.

[0116] The operating status of each device in the second operating subsystem is:

[0117] The first bypass valve is opened, the second bypass valve is closed, the condenser operates in natural cooling and drying mode, the compressor is turned off, and the third liquid pump is turned on.

[0118] At this time, the refrigeration system operates in full natural cooling mode, and the compressor does not need to run.

[0119] 2. When the outdoor temperature is -19℃≤T<11℃:

[0120] The operating status of each device in the first refrigeration subsystem is:

[0121] The first electronic valve is opened, the second electronic valve is opened, the first liquid pump is opened, the second liquid pump is opened, and the cooling tower is opened.

[0122] The operating status of each device in the second operating subsystem is:

[0123] The first bypass valve is opened, the second bypass valve is closed, the condenser operates in natural cooling and wet mode, the compressor is turned off, and the third liquid pump is turned on.

[0124] At this time, the refrigeration system is still running in full natural cooling mode.

[0125] 3. When the outdoor temperature is 11℃≤T<21℃:

[0126] The operating status of each device in the first refrigeration subsystem is:

[0127] The first electronic valve is opened, the second electronic valve is opened, the first liquid pump is opened, the second liquid pump is opened, and the cooling tower is opened.

[0128] The operating status of each device in the second operating subsystem is:

[0129] The first bypass valve is closed, the second bypass valve is closed, the condenser operates in natural cooling and wet mode, the compressor is turned on, and the third liquid pump is turned on.

[0130] At this time, the refrigeration system operates in partial natural cooling mode. The hot air from the heat load source is first pre-cooled by the first coil, and then cooled to the supply air temperature by the second coil.

[0131] 4. When the outdoor temperature T≥21℃:

[0132] The operating status of each device in the first refrigeration subsystem is:

[0133] The first electronic valve is closed, the second electronic valve is closed, the first liquid pump is closed, the second liquid pump is closed, and the cooling tower is closed.

[0134] The operating status of each device in the second operating subsystem is:

[0135] The first bypass valve is closed, the second bypass valve is closed, the condenser operates in natural cooling and wet mode, the compressor is turned on, and the third liquid pump is turned on.

[0136] Step 403: Control the first refrigeration subsystem and the second refrigeration subsystem to operate according to their respective corresponding expected operating states to cool the heat load source.

[0137] In this embodiment, the above-mentioned execution subject can control the first refrigeration subsystem and the second refrigeration subsystem to operate according to their corresponding expected operating states to cool the heat load source.

[0138] In this embodiment, the above-mentioned execution entity has the control right over each device in the first refrigeration subsystem and the second refrigeration subsystem, such as the control right to remotely turn on and off each device, thereby controlling the operation of the first refrigeration subsystem and the second refrigeration subsystem according to the expected operating state to cool the heat load source.

[0139] Continue to see Figure 5 , Figure 5 500 is a schematic diagram of an application scenario of the refrigeration method according to the present embodiment. The refrigeration system includes: the refrigeration system includes: a first refrigeration subsystem 501 and a second refrigeration subsystem 502. The first refrigeration subsystem includes a first loop and a second loop for the flow of cooling liquid, the first loop includes a cooling device 5011, a heat exchange device 5012 and a first liquid pump 5013, and the second loop includes a heat exchange device, a first coil 5014 and a second liquid pump 5015; the second refrigeration subsystem includes a third loop for the flow of cooling liquid, and the third loop includes a condenser 5021, a second coil 5022 and a third liquid pump 5023.

[0140] During the operation of the refrigeration system, the server 503 determines the outdoor temperature corresponding to the heat load source in real time; according to the outdoor temperature, the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem are determined, wherein the first refrigeration subsystem includes a first loop and a second loop for the flow of cooling liquid, the first loop includes a cooling device, a heat exchange device and a first liquid pump, the second loop includes a heat exchange device, a first coil and a second liquid pump, the second refrigeration subsystem includes a third loop for the flow of cooling liquid, the third loop includes a condenser, a second coil and a third liquid pump; the first refrigeration subsystem and the second refrigeration subsystem are controlled to operate according to their respective expected operating states to cool the heat load source.

[0141] In this embodiment, the refrigeration system includes a first refrigeration subsystem and a second refrigeration subsystem that are independent of each other. The first refrigeration subsystem includes a first loop and a second loop for the flow of cooling liquid, the first loop includes a cooling device, a heat exchange device and a first liquid pump, and the second loop includes a heat exchange device, a first coil and a second liquid pump; the second refrigeration subsystem includes a third loop for the flow of cooling liquid, and the third loop includes a condenser, a second coil and a third liquid pump; according to the outdoor temperature corresponding to the heat load source, the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem can be determined to control the independent operation of the dual cold source system, thereby improving the reliability of the refrigeration system; and, it can make full use of the natural cold source, reduce the demand for mechanical refrigeration, and improve the refrigeration efficiency while reducing energy consumption.

[0142] Continue to refer Figure 6 As an implementation of the methods shown in the above figures, the present disclosure provides an embodiment of a refrigeration device. The system embodiment is Figure 2 Corresponding to the method embodiment shown, the system can be specifically applied to various electronic devices.

[0143] like Figure 6 As shown, the refrigeration device 600 includes: a temperature determination unit 601 is configured to determine the outdoor temperature corresponding to the heat load source; a state determination unit 602 is configured to determine the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem respectively according to the outdoor temperature, wherein the first refrigeration subsystem includes a first loop and a second loop for the flow of cooling liquid, the first loop includes a cooling device, a heat exchange device and a first liquid pump, the second loop includes a heat exchange device, a first coil and a second liquid pump, and the second refrigeration subsystem includes a third loop for the flow of cooling liquid, and the third loop includes a condenser, a second coil and a third liquid pump; the operation control unit 603 is configured to control the first refrigeration subsystem and the second refrigeration subsystem to operate according to their respective expected operating states to cool the heat load source.

[0144] In some optional implementations of this embodiment, the second refrigeration subsystem also includes a compressor, a first bypass valve and a second bypass valve, the compressor is arranged in the third loop and is located between the second coil and the condenser, the first bypass valve is arranged in the third loop and is connected in parallel with the compressor, the second bypass valve is arranged in the third loop and is connected in parallel with the third liquid pump, and the state determination unit 602 is further configured to: in response to the outdoor temperature being less than the first preset temperature, determine that the expected operating state of the second refrigeration subsystem is: the first bypass valve is open, the second bypass valve is closed, the condenser operates in natural cooling and drying mode, the compressor is turned off, and the third liquid pump is turned on.

[0145] In some optional implementations of this embodiment, the state determination unit 602 is further configured to: in response to the outdoor temperature being greater than or equal to a first preset temperature and less than a second preset temperature, determine that the expected operating state of the second refrigeration subsystem is: the first bypass valve is open, the second bypass valve is closed, the condenser operates in a natural cooling and wet mode, the compressor is turned off, and the third liquid pump is turned on.

[0146] In some optional implementations of this embodiment, the state determination unit 602 is further configured to: in response to the outdoor temperature being greater than or equal to a second preset temperature, determine that the expected operating state of the second refrigeration subsystem is: the first bypass valve is closed, the second bypass valve is closed, the condenser operates in a natural cooling and wet mode, the compressor is turned on, and the third liquid pump is turned on.

[0147] In some optional implementations of the present embodiment, the first refrigeration subsystem further includes a first electronic valve and a second electronic valve, the first electronic valve being arranged in the second loop and located at the liquid inlet end of the first coil, and the second electronic valve being arranged in the second loop and located at the liquid outlet end of the first coil; and the state determination unit 602 is further configured to: in response to the outdoor temperature being less than a third preset temperature, determine that the expected operating state of the second refrigeration subsystem is: the first electronic valve is turned on, the second electronic valve is turned on, the first liquid pump is turned on, the second liquid pump is turned on, and the cooling tower is turned on.

[0148] In some optional implementations of this embodiment, the state determination unit 602 is further configured to: in response to the outdoor temperature being greater than or equal to a third preset temperature, determine that the expected operating state of the second refrigeration subsystem is: the first electronic valve is closed, the second electronic valve is closed, the first liquid pump is closed, the second liquid pump is closed, and the cooling tower is closed.

[0149] In this embodiment, a refrigeration device is provided, wherein the refrigeration system includes a first refrigeration subsystem and a second refrigeration subsystem which are independent of each other, the first refrigeration subsystem including a first loop and a second loop for the flow of cooling liquid, the first loop including a cooling device, a heat exchange device and a first liquid pump, the second loop including a heat exchange device, a first coil and a second liquid pump; the second refrigeration subsystem includes a third loop for the flow of cooling liquid, the third loop including a condenser, a second coil and a third liquid pump; according to the outdoor temperature corresponding to the heat load source, the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem can be determined respectively, so as to control the independent operation of the dual cold source system, thereby improving the reliability of the refrigeration system; and, it can make full use of the natural cold source, reduce the demand for mechanical refrigeration, and improve the refrigeration efficiency while reducing energy consumption.

[0150] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the refrigeration method described in any of the above embodiments can be implemented when the at least one processor executes the instructions.

[0151] According to an embodiment of the present disclosure, the present disclosure further provides a readable storage medium, which stores computer instructions, and the computer instructions are used to enable a computer to implement the refrigeration method described in any of the above embodiments when executed.

[0152] An embodiment of the present disclosure provides a computer program product, which, when executed by a processor, can implement the refrigeration method described in any of the above embodiments.

[0153] Figure 7 A schematic block diagram of an example electronic device 700 that can be used to implement an embodiment of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present disclosure described and / or required herein.

[0154] like Figure 7 As shown, the device 700 includes a computing unit 701, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 702 or a computer program loaded from a storage unit 708 into a random access memory (RAM) 703. In the RAM 703, various programs and data required for the operation of the device 700 can also be stored. The computing unit 701, the ROM 702, and the RAM 703 are connected to each other via a bus 704. An input / output (I / O) interface 705 is also connected to the bus 704.

[0155] A number of components in the device 700 are connected to the I / O interface 705, including: an input unit 706, such as a keyboard, a mouse, etc.; an output unit 707, such as various types of displays, speakers, etc.; a storage unit 708, such as a disk, an optical disk, etc.; and a communication unit 709, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 709 allows the device 700 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0156] The computing unit 701 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 701 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The computing unit 701 performs the various methods and processes described above, such as a refrigeration method. For example, in some embodiments, the refrigeration method may be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit 708. In some embodiments, part or all of the computer program may be loaded and / or installed on the device 700 via the ROM 702 and / or the communication unit 709. When the computer program is loaded into the RAM 703 and executed by the computing unit 701, one or more steps of the refrigeration method described above may be performed. Alternatively, in other embodiments, the computing unit 701 may be configured to perform the refrigeration method in any other appropriate manner (e.g., by means of firmware).

[0157] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0158] The program code for implementing the method of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable refrigeration device, so that the program code, when executed by the processor or controller, implements the functions / operations specified in the flow chart and / or block diagram. The program code may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0159] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0160] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0161] The systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), and the Internet.

[0162] A computer system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship between the client and the server is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or a cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and virtual private servers (VPS) services; it may also be a server for a distributed system, or a server combined with a blockchain.

[0163] According to the technical solution of the embodiment of the present disclosure, a refrigeration system, method and device are provided, wherein the refrigeration system includes a first refrigeration subsystem and a second refrigeration subsystem which are independent of each other, the first refrigeration subsystem including a first loop and a second loop for the flow of cooling liquid, the first loop including a cooling device, a heat exchange device and a first liquid pump, the second loop including a heat exchange device, a first coil and a second liquid pump; the second refrigeration subsystem includes a third loop for the flow of cooling liquid, the third loop including a condenser, a second coil and a third liquid pump; according to the outdoor temperature corresponding to the heat load source, the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem can be determined to control the independent operation of the dual cold source system, thereby improving the reliability of the refrigeration system; and, it can make full use of natural cold sources, reduce the demand for mechanical refrigeration, and improve the refrigeration efficiency while reducing energy consumption.

[0164] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution provided by this disclosure can be achieved, and this document does not limit this.

[0165] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A refrigeration system, comprising: A first refrigeration subsystem, wherein the first refrigeration subsystem includes a first loop and a second loop for cooling liquid to flow, the first loop includes a cooling device, a heat exchange device and a first liquid pump, and the second loop includes the heat exchange device, a first coil and a second liquid pump; The second refrigeration subsystem includes a third loop for cooling liquid to flow, and the third loop includes a condenser, a second coil and a third liquid pump.

2. The system according to claim 1, wherein: The second refrigeration subsystem also includes a compressor; The compressor is disposed in the third loop and is located between the second coil and the condenser.

3. The system according to claim 2, wherein: The second refrigeration subsystem further includes a first bypass valve and a second bypass valve; The first bypass valve is arranged in the third loop and connected in parallel with the compressor; The second bypass valve is arranged in the third loop and is connected in parallel with the third liquid pump.

4. The system according to claim 1, wherein: The first refrigeration subsystem further includes a first electronic valve and a second electronic valve; The first electronic valve is arranged in the second loop and is located at the liquid inlet end of the first coil; The second electronic valve is arranged in the second loop and is located at the liquid outlet end of the first coil.

5. The system according to claim 1 or 4, wherein: The cooling equipment is a cooling tower, and the heat exchange equipment is a plate heat exchanger.

6. The system according to claim 2 or 3, wherein: The compressor is a magnetic suspension compressor, and the condenser is an evaporative condenser.

7. A data center, comprising: At least one row of server cabinets; At least one wind wall corresponding to at least one column of the server cabinets, each wind wall is arranged in parallel with the corresponding server cabinet, and each wind wall includes a first coil and a second coil in a plurality of refrigeration systems, wherein the refrigeration system is the refrigeration system described in any one of claims 1-6.

8. The data center according to claim 7, wherein: The distance between the first coil in the wind wall and the corresponding server cabinet is smaller than the distance between the second coil in the wind wall and the corresponding server cabinet.

9. The data center according to claim 7 or 8, wherein: Each of the wind walls also includes a filter device and a fan; The filtering device is arranged close to the corresponding server cabinet, and the fan is arranged far away from the corresponding server cabinet.

10. A refrigeration method, comprising: Determine the outdoor temperature corresponding to the heat load source; Determine the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem according to the outdoor temperature, wherein the first refrigeration subsystem includes a first loop and a second loop for cooling liquid to flow, the first loop includes a cooling device, a heat exchange device and a first liquid pump, the second loop includes the heat exchange device, a first coil and a second liquid pump, and the second refrigeration subsystem includes a third loop for cooling liquid to flow, the third loop includes a condenser, a second coil and a third liquid pump; The first refrigeration subsystem and the second refrigeration subsystem are controlled to operate according to their respective corresponding expected operating states to cool the heat load source.

11. The method according to claim 10, wherein: The second refrigeration subsystem further includes a compressor, a first bypass valve and a second bypass valve, the compressor is arranged in the third loop and located between the second coil and the condenser, the first bypass valve is arranged in the third loop and connected in parallel with the compressor, the second bypass valve is arranged in the third loop and connected in parallel with the third liquid pump, and The determining, according to the outdoor temperature, the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem, respectively, includes: In response to the outdoor temperature being less than a first preset temperature, determining that the expected operating state of the second refrigeration subsystem is: The first bypass valve is opened, the second bypass valve is closed, the condenser operates in a natural cooling and drying mode, the compressor is turned off, and the third liquid pump is turned on.

12. The method according to claim 11, wherein: The determining, according to the outdoor temperature, the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem, respectively, further includes: In response to the outdoor temperature being greater than or equal to the first preset temperature and less than a second preset temperature, determining that the expected operating state of the second refrigeration subsystem is: The first bypass valve is opened, the second bypass valve is closed, the condenser operates in a natural cooling and wet mode, the compressor is turned off, and the third liquid pump is turned on.

13. The method according to claim 12, wherein: The determining, according to the outdoor temperature, the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem, respectively, further includes: In response to the outdoor temperature being greater than or equal to the second preset temperature, determining that the expected operating state of the second refrigeration subsystem is: The first bypass valve is closed, the second bypass valve is closed, the condenser operates in a natural cooling and wet mode, the compressor is turned on, and the third liquid pump is turned on.

14. The method according to claim 10, wherein: The first refrigeration subsystem further includes a first electronic valve and a second electronic valve, wherein the first electronic valve is arranged in the second loop and located at the liquid inlet end of the first coil, and the second electronic valve is arranged in the second loop and located at the liquid outlet end of the first coil; as well as The determining, according to the outdoor temperature, the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem, respectively, includes: In response to the outdoor temperature being less than the third preset temperature, determining the expected operating state of the second refrigeration subsystem as: The first electronic valve is opened, the second electronic valve is opened, the first liquid pump is opened, the second liquid pump is opened, and the cooling tower is opened.

15. The method according to claim 14, wherein: The determining, according to the outdoor temperature, the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem, respectively, includes: In response to the outdoor temperature being greater than or equal to the third preset temperature, determining that the expected operating state of the second refrigeration subsystem is: The first electronic valve is closed, the second electronic valve is closed, the first liquid pump is closed, the second liquid pump is closed, and the cooling tower is closed.

16. A refrigeration device, comprising: a temperature determination unit configured to determine an outdoor temperature corresponding to a heat load source; a state determination unit configured to determine the expected operating states corresponding to the first refrigeration subsystem and the second refrigeration subsystem respectively according to the outdoor temperature, wherein the first refrigeration subsystem includes a first loop and a second loop for cooling liquid to flow, the first loop includes a cooling device, a heat exchange device and a first liquid pump, the second loop includes the heat exchange device, a first coil and a second liquid pump, and the second refrigeration subsystem includes a third loop for cooling liquid to flow, the third loop includes a condenser, a second coil and a third liquid pump; The operation control unit is configured to control the first refrigeration subsystem and the second refrigeration subsystem to operate according to their respective corresponding expected operation states to cool the heat load source.

17. An electronic device, characterized in that: include: at least one processor; as well as a memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 10 to 15.

18. A non-transitory computer-readable storage medium storing computer instructions, characterized in that: The computer instructions are used to cause the computer to execute the method according to any one of claims 10 to 15.

19. A computer program product comprising: A computer program which, when executed by a processor, implements the method according to any one of claims 10 to 15.

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