Methods and control systems for controlling cooling capacity of air cooling and liquid cooling based on server power consumption

Abstract

This invention relates to the field of cooling systems and methods, and discloses a method and control system for controlling the cooling capacity of air cooling and liquid cooling based on server power consumption. The liquid cooling subsystem includes a primary liquid cooling loop and a secondary liquid cooling loop, which exchange heat through a first plate heat exchanger. The air cooling subsystem includes a direct expansion air cooling loop and a chilled water loop. The primary liquid cooling loop, the direct expansion air cooling loop, and the chilled water loop are respectively connected to an outdoor condenser. The direct expansion air cooling loop is connected to a first branch and a second branch. The first branch diverts a portion of the refrigerant from the direct expansion air cooling loop to the second plate heat exchanger to cool the secondary liquid cooling loop. The second branch diverts a portion of the refrigerant from the direct expansion air cooling loop to the third plate heat exchanger to cool the chilled water loop. This invention facilitates the integration and synergy of air cooling and liquid cooling solutions to meet the high-efficiency, reliable, and energy-saving cooling requirements of data centers.

Description

Technical Field

[0001] This invention relates to the field of cooling systems and cooling methods, and in particular to a method for controlling air cooling and liquid cooling capacity based on server power consumption, and a cooling capacity control system. Background Technology

[0002] With the continuous miniaturization of semiconductor process nodes and the increasing integration, high-performance servers (such as multi-core and many-core servers) have gradually become the mainstream technology. These high-performance servers have seen a significant leap in computing power; for example, multi-core and many-core architecture central processing units (CPUs) have become the mainstream technology driving the growth of server computing power density. However, this significant leap in computing power is accompanied by an exponential increase in the difficulty of thermal management: on the one hand, multi-core and many-core chips themselves exhibit extremely high heat flux density due to their extremely high transistor integration; on the other hand, when multiple such high-power devices are densely integrated within a limited space, not only does it lead to the superposition of system-level power consumption, but the thermal coupling effect between devices also induces significant local hot spots and thermal crosstalk problems, severely restricting the reliable operation and performance release of the system.

[0003] Air cooling is the traditional cooling technology for data centers. However, with the continuous increase in data center computing density, especially the widespread application of AI chips and high-performance servers (such as many-core servers), traditional air cooling technology is no longer sufficient to meet the demands for efficient heat dissipation. Liquid cooling technology, due to its superior heat dissipation performance, is gradually being adopted, particularly cold-plate liquid-cooled servers. Considering cost control and the replacement cycle of old and new technologies, air-cooled and liquid-cooled servers will coexist in data centers for a considerable transition period.

[0004] In existing technologies, the coexistence of air-cooled and liquid-cooled systems mainly involves two implementation methods, both of which have significant drawbacks and cannot meet the high-efficiency, reliable, and energy-saving cooling requirements of data centers: The first category is formal integration, where the air-cooling system and the liquid-cooling system are designed and operated independently. This presents the following problems: (1) The system is complex and costly. The two independent systems need to be equipped with cold sources, pipelines and control equipment respectively, resulting in large initial investment and land area. (2) The energy efficiency is low. The two systems are generally determined to start one of them based on the outdoor ambient temperature and the cooling water inlet temperature. Therefore, it is impossible to achieve intelligent allocation and complementarity of cooling capacity according to changes in outdoor environment or load. Especially in transitional seasons or low temperature environments, it is impossible to make full use of natural cold sources. (3) Control is fragmented. The air-cooled and liquid-cooled systems are controlled separately and lack coordination. Even if the emergency mode is adopted to start both systems together based on the outdoor ambient temperature and the cooling water inlet temperature, the two systems are generally controlled separately according to their own set temperature control targets. This method may lead to the preparation of redundant cooling capacity, resulting in increased energy consumption, or unnecessary local overcooling, and may also result in insufficient cooling. (4) Reliability is limited, emergency backup cannot be achieved between independent systems, the system redundancy is weak, and the independent operation of the two systems can easily lead to the superposition and waste of cooling capacity, further increasing energy consumption. The second category is liquid cooling as an auxiliary solution to air cooling, or air cooling as an auxiliary solution to liquid cooling. Although this solution attempts to achieve synergy between the two, it can only achieve one to assist the other, without truly achieving integration and synergy between the two. Furthermore, it cannot retain independent air cooling and liquid cooling systems. Therefore, it cannot flexibly provide separate air cooling or separate liquid cooling modes according to the heat dissipation requirements of different servers. It has limited adaptability to server heat dissipation scenarios, and its heat dissipation capacity is difficult to match diverse load requirements, resulting in insufficient reliability. Therefore, existing solutions for integrating air-cooled and liquid-cooled servers are insufficient to achieve true synergy in order to improve energy efficiency and reliability. Summary of the Invention

[0005] The main objective of this invention is to provide a method and control system for controlling the cooling capacity of air-cooled and liquid-cooled servers based on server power consumption. This aims to solve the technical problem that air-cooled servers and liquid-cooled servers are difficult to truly integrate and achieve synergy in order to meet the high-efficiency, reliable, and energy-saving cooling requirements of data centers.

[0006] To achieve the above objectives, this invention provides a method for controlling air-cooled and liquid-cooled cooling capacity based on server power consumption, applied to a cooling capacity control system. The cooling capacity control system includes a shared cold source module, a liquid-cooled subsystem serving the liquid-cooled server, and an air-cooled subsystem serving the air-cooled server. The shared cold source module includes an outdoor condenser. The liquid-cooled subsystem includes a primary liquid-cooled loop and a secondary liquid-cooled loop that exchange heat through a first plate heat exchanger. The air-cooled subsystem includes a direct-expansion air-cooled loop and a chilled water loop. The primary liquid-cooled loop, the direct-expansion air-cooled loop, and the chilled water loop are respectively connected to the outdoor condenser. The direct-expansion air-cooled loop is connected to a first branch and a second branch. The first branch diverts a portion of the refrigerant from the direct-expansion air-cooled loop to the second plate heat exchanger to cool the liquid-cooled secondary loop. The second branch diverts a portion of the refrigerant from the direct-expansion air-cooled loop to the third plate heat exchanger to cool the chilled water loop. The method includes the following steps: Determine the target cooling capacity based on the server's heat dissipation and power consumption; Based on the target cooling capacity, calculate the first cooling capacity of the liquid cooling subsystem and the second cooling capacity corresponding to the direct expansion air-cooled circuit, so that the liquid cooling subsystem can start up and achieve auxiliary cooling according to the first cooling capacity, and the air-cooled subsystem can provide the main cooling capacity according to the second cooling capacity; wherein, the sum of the first cooling capacity and the second cooling capacity is the target cooling capacity; The compressor return air temperature in the direct expansion air-cooled circuit and the liquid cooling plate outlet water temperature in the liquid cooling primary circuit are detected. Based on the comparison results of the compressor return air temperature and the return air temperature control value, and the comparison results of the liquid cooling plate outlet water temperature and the outlet water temperature control value, the cooling capacity of the direct expansion air-cooled circuit and the cooling capacity of the liquid cooling subsystem are adjusted.

[0007] Optionally, the method further includes: When the outlet water temperature of the liquid cooling plate is not higher than the outlet water temperature threshold, the primary side circuit of the liquid cooling system is opened and the first branch circuit is closed. The system detects whether the inlet water temperature of the liquid cooling plate is higher than the inlet water temperature threshold. If the inlet water temperature of the liquid cooling plate is higher than the inlet water temperature threshold, the first shunt branch is activated.

[0008] Optionally, the direct expansion air-cooled circuit includes a refrigerant pump, a first electronic expansion valve, an air-cooled evaporator coil, and a compressor connected in sequence from the copper tube outlet to the copper tube inlet of the outdoor condenser; wherein the refrigerant pump is connected in parallel with a first check valve, and the compressor is connected in parallel with a second check valve; the outdoor condenser includes a spray pipe for spraying the copper tubes; the inlet of the chilled water circuit is connected to the supply water pipe of the liquid-cooled primary circuit; the chilled water circuit includes a second regulating valve, a fourth temperature sensor, and a chilled water coil connected in sequence, and the outlet of the chilled water circuit is connected to the return water pipe of the liquid-cooled primary circuit; the second regulating valve is connected to a third plate heat exchanger through a parallel chilled water branch; the chilled water branch includes a third regulating valve; The method further includes: Obtain the outdoor temperature. When the outdoor temperature is lower than the set temperature, shut down the compressor in the direct expansion air-cooled circuit and start the refrigerant pump. Obtain the inlet water temperature of the primary side circuit of the liquid cooling system; When the inlet water temperature of the liquid cooling primary circuit is lower than the set threshold for the inlet water temperature of the chilled water coil, the second regulating valve in the chilled water circuit is opened and the third regulating valve is closed, so that the spray water obtained by the spray pipe spraying the copper pipe in the outdoor condenser enters the chilled water coil for cooling. When the inlet water temperature of the liquid cooling primary circuit reaches the set threshold of the chilled water coil inlet water temperature, the second regulating valve in the chilled water circuit is closed and the third regulating valve is opened, so that the chilled water flows through the third plate heat exchanger and is cooled by the bypass refrigerant from the direct expansion air-cooled circuit.

[0009] To achieve the above objectives, the present invention also provides a cooling capacity control system for executing the above-described air-cooled and liquid-cooled cooling capacity control method based on server power consumption. The cooling capacity control system includes a shared cooling source module, a liquid-cooled subsystem serving the liquid-cooled server, and an air-cooled subsystem serving the air-cooled server. The shared cooling source module includes an outdoor condenser; The liquid cooling subsystem includes a liquid cooling primary side loop and a liquid cooling secondary side loop that exchange heat through a first plate heat exchanger; the air cooling subsystem includes a direct expansion air cooling loop and a chilled water loop. The liquid cooling primary circuit, the direct expansion air-cooled circuit, and the chilled water circuit are respectively connected to the outdoor condenser; The direct expansion air-cooled circuit is connected to a first branch and a second branch. The first branch is used to divert a portion of the refrigerant from the direct expansion air-cooled circuit to the second plate heat exchanger to cool the liquid-cooled secondary side circuit. The second branch is used to divert a portion of the refrigerant from the direct expansion air-cooled circuit to the third plate heat exchanger to cool the chilled water circuit.

[0010] Optionally, the first plate heat exchanger includes a first heat exchange tube connected to the liquid-cooled primary circuit and a second heat exchange tube connected to the liquid-cooled secondary circuit; the second plate heat exchanger includes a third heat exchange tube connected to the first branch circuit and a fourth heat exchange tube connected to the liquid-cooled secondary circuit. The liquid cooling primary circuit includes a water supply pipe connected to the inlet of the first heat exchange tube of the first plate heat exchanger and a water return pipe connected to the outlet of the first heat exchange tube of the first plate heat exchanger. The water supply pipe is equipped with a first temperature sensor, a first pump device, a pressure sensor and a first regulating valve. The water supply pipe is used to draw water from the water tank of the outdoor condenser, and the water return pipe is used to return water to the water tank of the outdoor condenser. The liquid-cooled secondary circuit includes a second pump unit, a second temperature sensor, a liquid-cooled plate, and a third temperature sensor, which are connected sequentially from the outlet of the second heat exchange tube of the first plate heat exchanger to the inlet of the second heat exchange tube; the pipeline between the outlet of the second heat exchange tube of the first plate heat exchanger and the second pump unit is connected to the fourth heat exchange tube in the second plate heat exchanger. The first branch is used to divert a portion of the refrigerant from the direct expansion air-cooled circuit to the third heat exchange tube of the second plate heat exchanger to cool the liquid-cooled secondary circuit.

[0011] Optionally, the direct expansion air-cooled circuit includes a refrigerant pump, a first electronic expansion valve, an air-cooled evaporator coil, and a compressor connected in sequence from the copper pipe outlet to the copper pipe inlet of the outdoor condenser; wherein, the refrigerant pump is connected in parallel with a first check valve, and the compressor is connected in parallel with a second check valve; the air-cooled evaporator coil is equipped with a fan; The air-cooled evaporator coils are connected in parallel to the first branch and the second branch, respectively.

[0012] Optionally, the first branch includes a second electronic expansion valve and a third check valve connected in sequence; the pipeline between the second electronic expansion valve and the third check valve is connected to the third heat exchange tube of the second plate heat exchanger.

[0013] Optionally, the third plate heat exchanger includes a fifth heat exchange tube connected to the second branch and a sixth heat exchange tube connected to the chilled water circuit; the second branch includes a third electronic expansion valve and a fourth check valve; the pipeline between the third electronic expansion valve and the fourth check valve is connected to the fifth heat exchange tube of the third plate heat exchanger.

[0014] Optionally, the inlet of the chilled water circuit is connected between the pressure sensor and the first regulating valve in the water supply pipe of the liquid cooling primary circuit. The chilled water circuit includes a second regulating valve, a fourth temperature sensor and a chilled water coil connected in sequence. The outlet of the chilled water circuit is connected to the return water pipe of the liquid cooling primary circuit. The second regulating valve is connected to the sixth heat exchange tube of the third plate heat exchanger through a parallel chilled water branch. The chilled water branch includes a third regulating valve.

[0015] Optionally, the cooling capacity control system also includes a bypass pipeline, which is equipped with a bypass valve; the inlet of the bypass pipeline is connected to the water supply pipe of the liquid cooling primary circuit, and the outlet of the bypass pipeline is connected to the water return pipe of the liquid cooling primary circuit.

[0016] The air-cooled and liquid-cooled cooling capacity control method based on server power consumption in this invention addresses the technical problem in existing technologies where integrated air-cooled and liquid-cooled server solutions struggle to achieve true integration and synergy to improve energy efficiency and reliability. This is achieved through a shared cooling source module, a liquid-cooled subsystem serving the liquid-cooled server, and a collaborative design of an air-cooled subsystem serving the air-cooled server. Compared to existing technologies, this method offers the following significant advantages: First, the cooling capacity control system, through its shared cold source module, dual-branch design, and multi-loop configuration, facilitates the intelligent allocation of compressor cooling capacity across the direct expansion air-cooled loop, liquid-cooled secondary loop, and chilled water loop. By detecting server heat dissipation, temperature parameters in the liquid-cooled primary loop, and direct expansion air-cooled loop, it precisely regulates the startup and operation parameters of the liquid-cooled and air-cooled subsystems in the hybrid cooling capacity control system. This allows the liquid-cooled and air-cooled subsystems to work together to provide the target cooling capacity required for the server's heat dissipation. Furthermore, when coordinating the control of the liquid-cooled and air-cooled subsystems, the air-cooled subsystem is prioritized to operate under a larger secondary control mechanism. The initial cooling capacity provides the primary cooling output to facilitate rapid server cooling. It also initiates the liquid cooling subsystem with a smaller initial cooling output to allow it to reach a stable state and provide auxiliary cooling. Then, based on the compressor return air temperature in the direct expansion air-cooling loop and the liquid cooling plate outlet water temperature in the primary liquid cooling loop, the cooling capacity of the direct expansion air-cooling loop is adjusted downwards while the cooling capacity of the liquid cooling subsystem is adjusted upwards. This ensures that the coordinated operation of the liquid cooling and air-cooling subsystems matches the actual heat dissipation needs of the server in real time, avoiding localized overcooling, insufficient cooling, or wasted cooling capacity. This significantly improves cooling efficiency and reduces data center energy consumption.

[0017] Secondly, the cooling control system adopts a shared cooling source module, eliminating the need to configure independent cooling sources and supporting pipelines and control equipment for the air-cooled subsystem and liquid-cooled subsystem respectively, effectively reducing initial investment and computer room footprint; the control method replaces the traditional mode of independent control of two systems through intelligent collaborative control, reducing control nodes and operation and maintenance complexity, while reducing equipment ineffective operation through loop switching logic, thus reducing energy consumption and operation and maintenance costs.

[0018] Third, the cooling control system also retains the relative independence of the liquid cooling subsystem and the air cooling subsystem. With the cooling capacity distribution and loop switching strategy of the control method, it can flexibly switch between separate liquid cooling, separate air cooling, and hybrid cooling modes according to the server's heat dissipation and power consumption (such as high power consumption of AI chips and low power consumption of traditional servers), adapting to diverse data center scenarios. At the same time, the design of shared cold source and dual shunt branches realizes emergency backup of the two subsystems, improves system redundancy, avoids cooling interruption caused by single system failure, and ensures stable operation of data center servers.

[0019] Fourth, the cooling capacity control system, through multi-loop heat exchange and refrigerant diversion and reuse design, combined with precise temperature threshold control of the control method, can make full use of natural cold sources (such as the operation of the fluorine pump to replace the compressor in low-temperature environments), reducing the operating time of high-energy-consuming components; at the same time, through intelligent allocation of cooling capacity, it can improve energy utilization and reduce energy waste.

[0020] Fifth, the air-cooling and liquid-cooling hybrid refrigeration control method has clear steps and rigorous logic, requiring no complex additional equipment or algorithm support, which is conducive to the manufacture, assembly and execution of the device by those skilled in the art, and facilitates industrialization and application. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the cooling capacity control system in this invention; Figure 2 This is a flowchart of the first embodiment of the air-cooled and liquid-cooled hybrid refrigeration control method of the present invention.

[0022] Explanation of icon numbers: 10-Shared cooling source module; 11-Water tank; 21-First plate heat exchanger; 22-Liquid-cooled primary side circuit; 23-Liquid-cooled secondary side circuit; 221-Water supply pipe; 222-Water return pipe; 223-First temperature sensor; 224-First pump unit; 225-Pressure sensor; 226-First regulating valve; 231-Second pump unit; 232-Second temperature sensor; 233-Liquid-cooled plate; 234-Third temperature sensor; 31-Direct expansion air-cooled circuit; 32-Chilled water circuit; 311-First branch; 312-Second plate heat exchanger; 313-Second branch; 314-Third plate heat exchanger; 315-Refrigerant pump; 316-First electronic expansion valve; 317-Air-cooled evaporator coil; 318-Compressor; 319-Copper tube; 320-First check valve; 321-Second check valve; 322-Spray pipe; 323-Second electronic expansion valve; 324-Third check valve; 325-Third electronic expansion valve; 326-Fourth check valve; 327-Second regulating valve; 328-Fourth temperature sensor; 329-Chilled water coil; 330-Wet film; 331-Chilled water branch; 332-Third regulating valve; 40 - Bypass valve; The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0024] In the following description, the use of suffixes such as "unit," "component," or "element" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "unit," "component," or "element" may be used interchangeably.

[0025] Please see Figures 1 to 2The first embodiment of the present invention provides a method for controlling air-cooled and liquid-cooled cooling capacity based on server power consumption, applied to a cooling capacity control system. The cooling capacity control system includes a shared cold source module 10, a liquid-cooled subsystem serving a liquid-cooled server, and an air-cooled subsystem serving an air-cooled server. The shared cold source module 10 includes an outdoor condenser. The liquid-cooled subsystem includes a liquid-cooled primary side loop 22 and a liquid-cooled secondary side loop 23 that exchange heat through a first plate heat exchanger 21. The air-cooled subsystem includes a direct expansion air-cooled loop 31 and a chilled water loop 32. The primary side circuit 22, the direct expansion air-cooled circuit 31, and the chilled water circuit 32 are respectively connected to the outdoor condenser; the direct expansion air-cooled circuit 31 is connected to a first branch 311 and a second branch 313. The first branch 311 is used to divert a portion of the refrigerant from the direct expansion air-cooled circuit 31 to the second plate heat exchanger 312 for cooling the liquid-cooled secondary side circuit 23. The second branch 313 is used to divert a portion of the refrigerant from the direct expansion air-cooled circuit 31 to the third plate heat exchanger 314 for cooling the chilled water circuit 32. The method includes the following steps: Step S10: Determine the target cooling capacity based on the server's heat generation and power consumption; Step S20: Calculate the first cooling capacity of the liquid cooling subsystem and the second cooling capacity corresponding to the direct expansion air-cooled circuit 31 according to the target cooling capacity, so that the liquid cooling subsystem can start up and achieve auxiliary cooling according to the first cooling capacity, and the air-cooled subsystem can provide the main cooling capacity according to the second cooling capacity; wherein, the sum of the first cooling capacity and the second cooling capacity is the target cooling capacity; Step S30: Detect the compressor return air temperature in the direct expansion air-cooled circuit 31 and the liquid cooling plate outlet water temperature in the liquid cooling primary side circuit 22; Based on the comparison results of the compressor return air temperature and the return air temperature control value, and the comparison results of the liquid cooling plate outlet water temperature and the outlet water temperature control value, adjust the cooling capacity of the direct expansion air-cooled circuit 31 and the cooling capacity of the liquid cooling subsystem.

[0026] The air-cooled and liquid-cooled cooling capacity control method based on server power consumption in this invention, through the collaborative design of a shared cold source module 10, a liquid-cooled subsystem serving the liquid-cooled server, and an air-cooled subsystem serving the air-cooled server, specifically addresses the technical problem in the prior art where air-cooled and liquid-cooled servers are difficult to truly integrate and collaborate to improve energy efficiency and reliability. Compared with the prior art, it has the following significant advantages: First, the cooling capacity control system, through the shared cold source module 10, dual-branch and multi-loop design, facilitates the intelligent allocation of the compressor 318's cooling capacity across the direct expansion air-cooled loop 31, the liquid-cooled secondary side loop 23, and the chilled water loop 32. By detecting the server's heat dissipation and the temperature parameters of each loop, it precisely controls the startup and operation parameters of the liquid-cooled and air-cooled subsystems in the hybrid cooling capacity control system. This allows the liquid-cooled and air-cooled subsystems to work together to provide the target cooling capacity required for the server's heat dissipation. Furthermore, when coordinating the control of the liquid-cooled and air-cooled subsystems, the air-cooled subsystem is started first with a larger secondary cooling capacity. The system provides the primary cooling capacity to facilitate rapid cooling of the server and initiates the liquid cooling subsystem with a smaller initial cooling capacity to allow it to reach a stable state and provide auxiliary cooling. Then, based on the compressor return air temperature in the direct expansion air-cooling circuit 31 and the liquid cooling plate outlet water temperature in the liquid cooling primary circuit 22, the system adjusts the cooling capacity of the direct expansion air-cooling circuit 31 and increases the cooling capacity of the liquid cooling subsystem in a timely manner. This ensures that the coordinated operation of the liquid cooling subsystem and the air-cooling subsystem matches the actual heat dissipation needs of the server in real time, avoiding local overcooling, insufficient cooling, or waste of cooling capacity, significantly improving cooling efficiency and reducing data center energy consumption.

[0027] Secondly, the cooling control system adopts a shared cold source module 10, eliminating the need to configure independent cold sources and supporting pipelines and control equipment for the air-cooled subsystem and liquid-cooled subsystem respectively, effectively reducing initial investment and computer room footprint; the control method replaces the traditional mode of independent control of two systems through intelligent collaborative control, reducing control nodes and operation and maintenance complexity, while reducing equipment ineffective operation through loop switching logic, thus reducing energy consumption and operation and maintenance costs.

[0028] Third, the cooling control system also retains the relative independence of the liquid cooling subsystem and the air cooling subsystem. With the cooling capacity distribution and loop switching strategy of the control method, it can flexibly switch between separate liquid cooling, separate air cooling, and hybrid cooling modes according to the server's heat dissipation and power consumption (such as high power consumption of AI chips and low power consumption of traditional servers), adapting to diverse data center scenarios. At the same time, the design of shared cold source and dual shunt branches realizes emergency backup of the two subsystems, improves system redundancy, avoids cooling interruption caused by single system failure, and ensures stable operation of data center servers.

[0029] Fourth, the cooling capacity control system, through multi-loop heat exchange and refrigerant diversion and reuse design, combined with precise temperature threshold control of the control method, can make full use of natural cold sources (such as the operation of the fluorine pump 315 to replace the compressor 318 in low-temperature environments), reducing the operating time of high-energy-consuming components; at the same time, through intelligent allocation of cooling capacity, it can improve energy utilization and reduce energy waste.

[0030] Fifth, the air-cooling and liquid-cooling hybrid refrigeration control method has clear steps and rigorous logic, requiring no complex additional equipment or algorithm support, which is conducive to the manufacture, assembly and execution of the device by those skilled in the art, and facilitates industrialization and application.

[0031] In one specific embodiment, the target cooling capacity is first determined based on the server's heat dissipation and power consumption.

[0032] Then, the first cooling capacity of the liquid cooling subsystem and the second cooling capacity corresponding to the direct expansion air-cooled circuit 31 are calculated. This allows the liquid cooling subsystem to start up and provide auxiliary cooling based on the first cooling capacity, while the air-cooled subsystem provides the primary cooling source based on the second cooling capacity. Specifically, the sum of the first and second cooling capacities is the target cooling capacity. The specific proportions of the first and second cooling capacities in the target cooling capacity are determined based on the actual heat dissipation and power consumption of the server; for example, based on the target cooling capacity... Q 1. Determine the first cooling capacity as 30% of the target cooling capacity, and the second cooling capacity as 70% of the target cooling capacity; or, based on the target cooling capacity... Q 2. Determine that the first cooling capacity is 20% of the target cooling capacity, and the second cooling capacity is 80% of the target cooling capacity, wherein... Q 1< Q 2; In the initial stage of startup, the liquid cooling provides cooling capacity relatively slowly, while the air cooling capacity provided by the compressor 318 in the direct expansion air cooling circuit 31 is more rapid. Therefore, in this invention, controlling the direct expansion air cooling circuit 31 to provide more cooling capacity is beneficial for quickly cooling the server.

[0033] Next, the compressor return air temperature (the return air temperature is the room temperature of the entire server) and the liquid cooling plate outlet water temperature in the direct expansion air-cooled circuit 31 are detected. The compressor return air temperature is compared with the preset return air temperature control value, and the liquid cooling plate outlet water temperature is compared with the preset outlet water temperature control value. For example, to determine if the return air temperature is lower than the return air temperature control value (e.g., if the room temperature return air temperature control value is 25℃, and the actual collected compressor return air temperature shows 24℃, it indicates that the room temperature is well controlled, meaning the air cooling demand is sufficient), if the liquid cooling plate outlet water temperature is higher than the liquid cooling plate outlet water temperature control value, then the cooling capacity of the compressor 318 refrigerant is reduced (e.g., reduced to 30% of the target cooling capacity), and the liquid cooling capacity is increased (e.g., reduced to 70% of the target cooling capacity). Because the compressor 318 has high power consumption and the liquid cooling has low power consumption, this method can reduce the overall power consumption of the two systems coupled together, allowing the system to maintain a lower power consumption.

[0034] Specifically, by opening the second electronic expansion valve 323, a portion of the refrigerant in the compressor 318 can be diverted, thereby helping to increase the cooling capacity of the liquid cooling subsystem, while simultaneously reducing the refrigerant cooling capacity of the compressor 318.

[0035] Furthermore, the return air temperature control value in this invention may not be equivalent to the upper limit of the compressor return air temperature in the direct expansion air-cooled circuit 31 in the prior art. For example, it may be an intermediate control value lower than the upper limit of the compressor return air temperature. The outlet water temperature control value of the liquid cooling plate 233 in this invention may not be equivalent to the upper limit of the outlet water temperature in the prior art. For example, it may be an intermediate control value lower than the upper limit of the outlet water temperature. These two intermediate control values ​​are used to perform the main and auxiliary switching between liquid cooling mode and air cooling mode, so that after the liquid cooling subsystem is running smoothly, the liquid cooling subsystem is used as the main refrigeration system, thereby reducing the total power consumption of the system.

[0036] According to the first embodiment of the air-cooling and liquid-cooling capacity control method based on server power consumption of the present invention, in the second embodiment of the air-cooling and liquid-cooling capacity control method based on server power consumption of the present invention, the method further includes: Step S40: When the outlet water temperature of the liquid cooling plate is not higher than the outlet water temperature threshold, open the liquid cooling primary side circuit 22 and close the first branch circuit 311. Step S50: Detect whether the inlet water temperature of the liquid cooling plate 233 is higher than the inlet water temperature threshold. If the inlet water temperature of the liquid cooling plate 233 is higher than the inlet water temperature threshold, open the first shunt branch 311.

[0037] After the cooling control system is stably started, the intelligent cooling control of the liquid cooling subsystem is realized through the core control logic of the present invention: when the liquid cooling plate outlet water temperature is detected to be lower than the liquid cooling plate outlet water temperature threshold, the first regulating valve 226 in the liquid cooling primary side circuit 22 is opened, thereby opening the liquid cooling primary side circuit 22, and using the low temperature return water of the water tank 11 in the shared cold source module 10 to directly cool the liquid cooling secondary side circuit 23.

[0038] When the second temperature sensor 232 in the liquid-cooled secondary circuit 23 detects a temperature higher than the inlet water temperature threshold of the liquid-cooled plate 233, the second electronic expansion valve 323 in the first branch circuit 311 is opened, and the direct expansion air-cooled circuit 31 is activated to supplement the cooling of the liquid-cooled secondary circuit 23 of the liquid-cooled subsystem. Therefore, depending on the outlet water temperature of the liquid-cooled plate 233 in the liquid-cooled subsystem, the water tank 11 in the shared cold source module 10 can be used to supply cooling for the liquid-cooled primary circuit 22, or the compressor refrigerant in the direct expansion air-cooled circuit 31 can be used to supply cooling for the liquid-cooled secondary circuit 23. This allows the liquid-cooled subsystem to adapt to higher server heat dissipation conditions, which is beneficial for increasing the upper limit of the system's heat dissipation.

[0039] Based on the first or second embodiment of the air-cooled and liquid-cooled cooling capacity control method based on server power consumption of the present invention, in the third embodiment of the air-cooled and liquid-cooled cooling capacity control method based on server power consumption of the present invention, the direct expansion air-cooled circuit 31 includes a refrigerant pump 315, a first electronic expansion valve 316, an air-cooled evaporator coil 317, and a compressor 318 connected in sequence from the copper pipe 319 outlet to the copper pipe 319 inlet of the outdoor condenser; wherein, the refrigerant pump 315 is connected in parallel with a first one-way valve 320, and the compressor 318 is connected in parallel with a second one-way valve 321; The outdoor condenser includes a spray pipe 322 for spraying copper pipe 319; the inlet of the chilled water circuit 32 is connected to the water supply pipe 221 of the liquid cooling primary side circuit 22; the chilled water circuit 32 includes a second regulating valve 327, a fourth temperature sensor 328 and a chilled water coil 329 connected in sequence, and the outlet of the chilled water circuit 32 is connected to the return water pipe 222 of the liquid cooling primary side circuit 22; the second regulating valve 327 is connected to the third plate heat exchanger 314 through a parallel chilled water branch 331; the chilled water branch 331 includes the third regulating valve 332; The method further includes: Step S60: Obtain the outdoor temperature. When the outdoor temperature is lower than the set temperature, turn off the compressor 318 in the direct expansion air-cooled circuit 31 and turn on the refrigerant pump 315. Step S70: Obtain the inlet water temperature of the liquid cooling primary circuit 22; Step S80: When the inlet water temperature of the liquid cooling primary circuit 22 is lower than the set threshold for the inlet water temperature of the chilled water coil 329, the second regulating valve 327 in the chilled water circuit 32 is opened and the third regulating valve 332 is closed, so that the spray water obtained by the spray pipe 322 spraying the copper pipe 319 in the outdoor condenser enters the chilled water coil 329 for cooling. In step S90, when the inlet water temperature of the liquid cooling primary circuit 22 reaches the set threshold of the inlet water temperature of the chilled water coil 329, the second regulating valve 327 in the chilled water circuit 32 is closed and the third regulating valve 332 is opened, so that the chilled water flows through the third plate heat exchanger 314 and is cooled by the bypass refrigerant from the direct expansion air-cooled circuit 31 before being supplied with cooling.

[0040] Specifically, a wet film 330 is installed below the copper pipe 319 inside the outdoor condenser. The copper pipe 319 is used for the flow of refrigerant.

[0041] This invention is used to realize intelligent switching control of dual modes in an air-cooled subsystem: Mode 1 is direct expansion air cooling: The direct expansion air cooling circuit 31 and the first electronic expansion valve 316 in the direct expansion air cooling circuit 31 are opened, and cooling is achieved through the air-cooled evaporator coil 317. When the outdoor temperature drops below the set temperature, the compressor 318 is turned off, and only the refrigerant pump 315 is turned on to circulate the refrigerant and meet the cooling requirements.

[0042] Mode 2 is the chilled water mode: When the inlet water temperature of the liquid cooling primary circuit 22 (i.e. the detection temperature of the first temperature sensor 223) is lower than the set threshold of the inlet water temperature of the chilled water coil 329, the second regulating valve 327 is opened and the third regulating valve 332 is closed, so that the spray water directly enters the chilled water coil 329 for cooling.

[0043] When the inlet water temperature of the liquid cooling primary circuit 22 reaches the set threshold of the inlet water temperature of the chilled water coil 329, the second regulating valve 327 is closed and the third regulating valve 332 is opened, so that the chilled water flows through the third plate heat exchanger 314 and is cooled by the bypass low-temperature refrigerant from the direct expansion air-cooled circuit 31 before being supplied with cooling.

[0044] The cooling capacity control system of this invention achieves coordinated and safe control. The fans of compressor 318, refrigerant pump 315, and air-cooled evaporator coil 317 are all controlled by frequency converters and adjusted according to real-time cooling demand. When pressure sensor 225 detects that the system pressure exceeds a set threshold, it controls the bypass valve 40 of the bypass pipeline to open to balance the pressure.

[0045] In addition, the shared cold source module 10 is provided with a spray pipe 322, a copper pipe 319, a wet film 330 and a water tank 11 arranged in the order from top to bottom. The copper pipe 319 is connected to the direct expansion air-cooled circuit 31. The spray pipe 322 is used to spray and cool the copper pipe 319, and the water tank 11 provides cooling water for the liquid cooling primary side circuit 22 and the chilled water coil 329.

[0046] Therefore, the beneficial effects of the present invention are as follows: 1. High integration and reduced costs: By sharing a cold source and intelligent piping design, the two systems are integrated into one, reducing equipment investment, installation and space costs, and achieving intelligent collaboration and significantly improved energy efficiency.

[0047] 2. Through multi-sensor fusion and intelligent valve control, dynamic matching of air-cooled and liquid-cooled loads is achieved, the utilization of natural cold sources is maximized (such as direct use of spray water and fluorine pump 315 circulation), and the system is optimized under high and low loads, thereby reducing overall energy efficiency.

[0048] 3. Integrated control and enhanced reliability: The integrated control module receives all sensor signals and controls the start-up, shutdown, and frequency of all valves, compressor 318, refrigerant pump 315, and fan. The integrated control module realizes global perception and unified scheduling of the entire system status, improving system stability and the ability to cope with sudden loads.

[0049] 4. A pressure sensor 225 and a bypass valve 40 are installed on the main pipeline of the system for pressure relief protection when the system pressure exceeds the limit. The pressure safety module further ensures the safety of the system.

[0050] 5. Flexible and adaptable, easy to promote: The system is perfectly adapted to the long-term transition of data centers from air cooling to liquid cooling, solves the actual pain points of hybrid cooling scenarios, and has broad application prospects.

[0051] In the first embodiment of the air-cooling and liquid-cooling capacity control method based on server power consumption of the present invention, and in the fourth embodiment of the air-cooling and liquid-cooling capacity control method based on server power consumption of the present invention, step S20 includes: Step S21: Determine the outlet water temperature control value of the liquid cooling plate 233 in the liquid cooling secondary circuit 23 based on the current target cooling capacity and the current inlet water temperature of the liquid cooling primary circuit 22. Step S22: Determine the return air temperature control value based on the current target cooling capacity and the current compressor return air temperature in the direct expansion air-cooled circuit 31; Step S23: Determine the control time for the liquid cooling plate outlet water temperature to reach the outlet water temperature control value; Step S24: Determine the second cooling capacity based on the control duration, the current compressor return air temperature, and the return air temperature control value; Step S25: Determine the first cooling capacity based on the control duration, the current inlet water temperature of the liquid cooling primary circuit 22, and the outlet water temperature control value of the liquid cooling plate 233 in the liquid cooling secondary circuit 23.

[0052] As a further extension, this embodiment dynamically determines the outlet water temperature control value of the liquid cooling plate 233 based on the current target cooling capacity and the inlet water temperature of the liquid cooling primary circuit 22, and dynamically determines the return air temperature control value based on the current target cooling capacity and the current compressor return air temperature of the direct expansion air-cooled circuit 31. This makes the two key switching thresholds no longer fixed values, but adaptively adjusted in real time according to the actual operating conditions of the system, thereby improving the ability of the hybrid cooling capacity control system to adapt to changes in different operating conditions.

[0053] Through the aforementioned adaptive return air temperature control value, outlet water temperature control value, and adaptive cooling capacity distribution method, the hybrid cooling capacity control system can achieve both rapid cooling and smooth transition during the startup phase, effectively shortening the time for the liquid cooling subsystem to reach stable output, avoiding prolonged high-load operation of the compressor 318, extending equipment lifespan, and improving the overall energy efficiency and reliability of the data center cooling capacity control system.

[0054] Specifically, in step S21, a first mapping relationship table can be set between the target cooling capacity range, the current inlet water temperature of the liquid cooling primary circuit 22, and the outlet water temperature control value. By determining the target cooling capacity range and the current inlet water temperature of the liquid cooling primary circuit 22, the corresponding outlet water temperature control value can be obtained.

[0055] In step S22, a second mapping table can be set between the target cooling capacity range, the current compressor return air temperature, and the return air temperature control value. By determining the target cooling capacity range and the current compressor return air temperature, the corresponding return air temperature control value can be obtained.

[0056] In steps S23 and S24, the control time for the liquid cooling plate outlet water temperature to reach the outlet water temperature control value is predicted based on the minimum operating power of the liquid cooling subsystem. Combined with this control time, the current compressor return air temperature, and the liquid cooling primary side inlet water temperature, the second cooling capacity of the direct expansion air-cooled circuit 31 and the first cooling capacity of the liquid cooling primary side are determined respectively. (Specifically, the weights of the second and first cooling capacities can be adjusted accordingly based on the first comparison result between the control time and the preset time threshold, the second comparison result between the current compressor return air temperature and the preset return air temperature, and the third comparison result between the liquid cooling primary side inlet water temperature and the preset inlet water temperature. For example, if the control time is longer than the preset time threshold, the current compressor return air temperature is higher than the preset return air temperature, and the liquid cooling primary side inlet water temperature is higher than the preset inlet water temperature, all of these will have a positive impact on the second cooling capacity (and a negative impact on the first cooling capacity), so that the air-cooled subsystem provides more cooling capacity during the start-up phase.) This achieves intelligent allocation of cooling capacity during the start-up phase.

[0057] While ensuring rapid start-up and rapid suppression of temperature rise in the direct expansion air-cooled circuit 31, this embodiment can predict in advance the time it takes for the liquid cooling subsystem to reach stable operating conditions, and reasonably match the start-up output of air cooling and liquid cooling to avoid redundant waste of cooling capacity or insufficient cooling in a short time, making the system start-up process smoother, the response faster, and the energy consumption more optimized.

[0058] To achieve the above objectives, the present invention also provides a cooling capacity control system for executing the above-described air-cooled and liquid-cooled cooling capacity control method based on server power consumption. The cooling capacity control system includes a shared cooling source module 10, a liquid-cooled subsystem serving the liquid-cooled server, and an air-cooled subsystem serving the air-cooled server. The shared cooling source module 10 includes an outdoor condenser; The liquid cooling subsystem includes a liquid cooling primary side loop 22 and a liquid cooling secondary side loop 23 that exchange heat through a first plate heat exchanger 21; the air cooling subsystem includes a direct expansion air cooling loop 31 and a chilled water loop 32. The liquid cooling primary side circuit 22, the direct expansion air-cooled circuit 31, and the chilled water circuit 32 are respectively connected to the outdoor condenser; The direct expansion air-cooled circuit 31 is connected to a first branch 311 and a second branch 313. The first branch 311 is used to divert a portion of the refrigerant from the direct expansion air-cooled circuit 31 to the second plate heat exchanger 312 for cooling the liquid-cooled secondary circuit 23. The second branch 313 is used to divert a portion of the refrigerant from the direct expansion air-cooled circuit 31 to the third plate heat exchanger 314 for cooling the chilled water circuit 32.

[0059] Furthermore, the first plate heat exchanger 21 includes a first heat exchange tube connected to the liquid-cooled primary side circuit 22 and a second heat exchange tube connected to the liquid-cooled secondary side circuit 23; the second plate heat exchanger 312 includes a third heat exchange tube connected to the first branch circuit 311 and a fourth heat exchange tube connected to the liquid-cooled secondary side circuit 23. The liquid cooling primary circuit 22 includes a water supply pipe 221 connected to the inlet of the first heat exchange tube of the first plate heat exchanger 21 and a water return pipe 222 connected to the outlet of the first heat exchange tube of the first plate heat exchanger 21. The water supply pipe 221 is equipped with a first temperature sensor 223, a first pump device 224, a pressure sensor 225 and a first regulating valve 226. The water supply pipe 221 is used to draw water from the water tank 11 of the outdoor condenser, and the water return pipe 222 is used to return water to the water tank 11 of the outdoor condenser. The liquid-cooled secondary circuit 23 includes a second pump device 231, a second temperature sensor 232, a liquid-cooled plate 233, and a third temperature sensor 234, which are connected sequentially from the outlet of the second heat exchange tube of the first plate heat exchanger 21 to the inlet of the second heat exchange tube; the pipeline between the outlet of the second heat exchange tube of the first plate heat exchanger 21 and the second pump device 231 is connected to the fourth heat exchange tube in the second plate heat exchanger 312. The first branch 311 is used to divert a portion of the refrigerant from the direct expansion air-cooled circuit 31 to the third heat exchange tube of the second plate heat exchanger 312 to cool the liquid-cooled secondary circuit 23.

[0060] Preferably, the direct expansion air-cooled circuit 31 includes a refrigerant pump 315, a first electronic expansion valve 316, an air-cooled evaporator coil 317, and a compressor 318 connected in sequence from the outlet of the copper pipe 319 of the outdoor condenser to the inlet of the copper pipe 319; wherein, the refrigerant pump 315 is connected in parallel with a first one-way valve 320, and the compressor 318 is connected in parallel with a second one-way valve 321; the air-cooled evaporator coil 317 is equipped with a fan; The air-cooled evaporator coil 317 is connected in parallel to the first branch 311 and the second branch 313.

[0061] When the first check valve 320 is open, the refrigerant pump 315 is not connected to the direct expansion air-cooled circuit 31; when the second check valve 321 is open, the compressor 318 is not connected to the direct expansion air-cooled circuit 31.

[0062] The air-cooled evaporator coil 317 is connected in parallel with a first branch 311, which is used to supply part of the refrigerant prepared by the compressor 318 to the first branch 311 so as to cool the liquid-cooled secondary side circuit 23 through the first branch 311. The air-cooled evaporator coil 317 is connected in parallel with a second branch 313, which is used to supply part of the refrigerant prepared by the compressor 318 to the second branch 313 so as to cool the chilled water circuit 32 through the second branch 313.

[0063] Adjusting the opening of the first electronic expansion valve 316 or adjusting the speed of the compressor 318 can control the refrigerant flow rate of the direct expansion air-cooled circuit 31.

[0064] Furthermore, the first branch 311 includes a second electronic expansion valve 323 and a third check valve 324 connected in sequence; the pipeline between the second electronic expansion valve 323 and the third check valve 324 is connected to the third heat exchange tube of the second plate heat exchanger 312.

[0065] Adjusting the opening of the second electronic expansion valve 323 can control the refrigerant flow rate of the compressor 318 that is diverted to the second branch 313.

[0066] In one specific embodiment, the third plate heat exchanger 314 includes a fifth heat exchange tube connected to the second branch 313 and a sixth heat exchange tube connected to the chilled water circuit 32 (specifically connected to the chilled water branch 331 in the chilled water circuit 32); the second branch 313 includes a third electronic expansion valve 325 and a fourth check valve 326; the pipeline between the third electronic expansion valve 325 and the fourth check valve 326 is connected to the fifth heat exchange tube of the third plate heat exchanger 314.

[0067] Adjusting the opening of the third electronic expansion valve 325 can control the refrigerant flow rate of the compressor 318 that is diverted to the third branch.

[0068] Preferably, the inlet of the chilled water circuit 32 is connected between the pressure sensor 225 and the first regulating valve 226 in the water supply pipe 221 of the liquid cooling primary side circuit 22. The chilled water circuit 32 includes a second regulating valve 327, a fourth temperature sensor 328 and a chilled water coil 329 connected in sequence. The outlet of the chilled water circuit 32 is connected to the return water pipe 222 of the liquid cooling primary side circuit 22. The second regulating valve 327 is connected to the sixth heat exchange tube of the third plate heat exchanger 314 through the parallel chilled water branch 331. Chilled water branch 331 includes a third regulating valve 332.

[0069] Furthermore, the cooling capacity control system also includes a bypass pipeline, which is equipped with a bypass valve 40; the inlet of the bypass pipeline is connected to the water supply pipe 221 of the liquid cooling primary circuit 22 (the inlet of the bypass pipeline is specifically connected between the first pump device 224 and the pressure sensor 225), and the outlet of the bypass pipeline is connected to the return water pipe 222 of the liquid cooling primary circuit 22.

[0070] In addition, a detailed workflow of the present invention is provided below.

[0071] After the system starts up, the integrated control module continuously monitors the data from each sensor.

[0072] Liquid cooling subsystem operation: In the initial state, the liquid cooling medium absorbs heat through the liquid cooling plate 233 and flows sequentially through the first plate heat exchanger 21 and the second plate heat exchanger 312, exchanging heat with the cooling medium from the outdoor condenser. If the first temperature sensor 223 detects a temperature lower than the set value T1 (e.g., lower than the inlet water temperature threshold of 30°C for the liquid cooling plate 233), the integrated control module opens the first regulating valve 226, allowing a portion of the low-temperature return water to bypass and directly mix, reducing the temperature of the cooling medium entering the first plate heat exchanger 21 and saving cooling capacity.

[0073] If the second temperature sensor 232 detects a temperature higher than the set value T2 (e.g., higher than the inlet water temperature threshold of 35°C for the liquid cooling plate 233), it indicates that the cooling capacity of the first plate heat exchanger 21 is insufficient. The integrated control module opens the second electronic expansion valve 323 and starts (or increases) the operation of the direct expansion air-cooled circuit 31 to perform secondary cooling on the liquid cooling secondary side circuit 23, ensuring that the inlet water temperature of the liquid cooling plate 233 is stable.

[0074] Air-cooled subsystem operation: Scenario A (or when stronger cooling is required): The integrated control module selects the direct expansion air-cooling mode. In this mode, compressor 318, the first electronic expansion valve 316, and the air-cooled evaporator coil 317 are activated. The variable-frequency compressor 318 adjusts its output according to the outlet air temperature of the air-cooling subsystem. When the outdoor temperature drops to a point where natural cooling sources can be fully utilized (e.g., below 15°C), compressor 318 is shut off, and only the refrigerant pump 315 starts to drive the refrigerant to circulate between the outdoor condenser and the air-cooled evaporator coil 317. The fan operates at a variable frequency, significantly reducing energy consumption.

[0075] Scenario B (using chilled water mode): If the temperature of the first temperature sensor 223 is lower than the chilled water inlet temperature setpoint T3, the integrated control module opens the second regulating valve 327 and closes the third regulating valve 332. Outdoor spray cooling water is directly pumped into the chilled water coil 329 to cool the air-cooled server; this mode has the highest energy efficiency. If the temperature of the first temperature sensor 223 reaches T3, the integrated control module closes the second regulating valve 327 and opens the third regulating valve 332. The chilled water then flows through the third plate heat exchanger 314. Simultaneously, the integrated control module bypasses a portion of the low-temperature, low-pressure refrigerant from the direct expansion air-cooled circuit 31 into the third plate heat exchanger 314 to cool the chilled water before sending it into the chilled water coil 329.

[0076] System protection: When the pressure sensor 225 detects that the system water pressure or refrigerant pressure exceeds the safety threshold, the integrated control module immediately opens the bypass valve 40 to release pressure, and closes it after the pressure returns to normal.

[0077] This invention achieves efficient, reliable, and intelligent management of hybrid cooling scenarios in data centers through the organic combination of the aforementioned hardware structure and control logic.

[0078] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a computer-readable storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to enter the methods described in the various embodiments of the present invention.

[0079] In the description of this specification, references to terms such as "one embodiment," "another embodiment," "other embodiments," or "first embodiment to Xth embodiment," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, method steps, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0080] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0081] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0082] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for controlling the cooling capacity of air cooling and liquid cooling based on server power consumption, characterized in that, This method is applied to a cooling capacity control system. The cooling capacity control system includes a shared cooling source module, a liquid cooling subsystem serving a liquid-cooled server, and an air-cooled subsystem serving an air-cooled server. The shared cooling source module includes an outdoor condenser. The liquid cooling subsystem includes a primary liquid-cooled circuit and a secondary liquid-cooled circuit that exchange heat through a first plate heat exchanger. The air-cooled subsystem includes a direct expansion air-cooled circuit and a chilled water circuit. The primary liquid-cooled circuit, the direct expansion air-cooled circuit, and the chilled water circuit are respectively connected to the outdoor condenser. The direct expansion air-cooled circuit is connected to a first branch and a second branch. The first branch is used to divert a portion of the refrigerant from the direct expansion air-cooled circuit to the second plate heat exchanger to cool the secondary liquid-cooled circuit. The second branch is used to divert a portion of the refrigerant from the direct expansion air-cooled circuit to the third plate heat exchanger to cool the chilled water circuit. The method includes the following steps: Determine the target cooling capacity based on the server's heat dissipation and power consumption; Based on the target cooling capacity, calculate the first cooling capacity of the liquid cooling subsystem and the second cooling capacity corresponding to the direct expansion air-cooled circuit, so that the liquid cooling subsystem can start up and achieve auxiliary cooling according to the first cooling capacity, and the air-cooled subsystem can provide the main cooling capacity according to the second cooling capacity; wherein, the sum of the first cooling capacity and the second cooling capacity is the target cooling capacity; The compressor return air temperature in the direct expansion air-cooled circuit and the liquid cooling plate outlet water temperature in the liquid cooling primary circuit are detected. Based on the comparison results of the compressor return air temperature and the return air temperature control value, and the comparison results of the liquid cooling plate outlet water temperature and the outlet water temperature control value, the cooling capacity of the direct expansion air-cooled circuit and the cooling capacity of the liquid cooling subsystem are adjusted.

2. The method for controlling air-cooled and liquid-cooled cooling capacity based on server power consumption according to claim 1, characterized in that, The method further includes: When the outlet water temperature of the liquid cooling plate is not higher than the outlet water temperature threshold, the primary side circuit of the liquid cooling system is opened and the first branch circuit is closed. The system detects whether the inlet water temperature of the liquid cooling plate is higher than the inlet water temperature threshold. If the inlet water temperature of the liquid cooling plate is higher than the inlet water temperature threshold, the first shunt branch is activated.

3. The method for controlling air-cooled and liquid-cooled cooling capacity based on server power consumption according to claim 1 or 2, characterized in that, The direct expansion air-cooled circuit includes a refrigerant pump, a first electronic expansion valve, an air-cooled evaporator coil, and a compressor connected sequentially from the copper tube outlet to the copper tube inlet of the outdoor condenser. The refrigerant pump is connected in parallel with a first check valve, and the compressor is connected in parallel with a second check valve. The outdoor condenser includes a spray pipe for spraying the copper tubes. The inlet of the chilled water circuit is connected to the supply water pipe of the liquid-cooled primary circuit. The chilled water circuit includes a second regulating valve, a fourth temperature sensor, and a chilled water coil connected sequentially. The outlet of the chilled water circuit is connected to the return water pipe of the liquid-cooled primary circuit. The second regulating valve is connected to a third plate heat exchanger via a parallel chilled water branch. The chilled water branch includes a third regulating valve. The method further includes: Obtain the outdoor temperature. When the outdoor temperature is lower than the set temperature, shut down the compressor in the direct expansion air-cooled circuit and start the refrigerant pump. Obtain the inlet water temperature of the liquid cooling primary circuit; When the inlet water temperature of the liquid cooling primary circuit is lower than the set threshold for the inlet water temperature of the chilled water coil, the second regulating valve in the chilled water circuit is opened and the third regulating valve is closed, so that the spray water obtained by the spray pipe spraying the copper pipe in the outdoor condenser enters the chilled water coil for cooling. When the inlet water temperature of the liquid cooling primary circuit reaches the set threshold of the chilled water coil inlet water temperature, the second regulating valve in the chilled water circuit is closed and the third regulating valve is opened, so that the chilled water flows through the third plate heat exchanger and is cooled by the bypass refrigerant from the direct expansion air-cooled circuit.

4. A cooling capacity control system, characterized in that, The cooling capacity control system is used to perform the air-cooled and liquid-cooled cooling capacity control method based on server power consumption as described in any one of claims 1 to 3. The cooling capacity control system includes a shared cold source module, a liquid-cooled subsystem serving the liquid-cooled server, and an air-cooled subsystem serving the air-cooled server. The shared cooling source module includes an outdoor condenser; The liquid cooling subsystem includes a liquid cooling primary side loop and a liquid cooling secondary side loop that exchange heat through a first plate heat exchanger; the air cooling subsystem includes a direct expansion air cooling loop and a chilled water loop. The liquid cooling primary circuit, the direct expansion air-cooled circuit, and the chilled water circuit are respectively connected to the outdoor condenser; The direct expansion air-cooled circuit is connected to a first branch and a second branch. The first branch is used to divert a portion of the refrigerant from the direct expansion air-cooled circuit to the second plate heat exchanger to cool the liquid-cooled secondary side circuit. The second branch is used to divert a portion of the refrigerant from the direct expansion air-cooled circuit to the third plate heat exchanger to cool the chilled water circuit.

5. The cooling capacity control system according to claim 4, characterized in that, The first plate heat exchanger includes a first heat exchange tube connected to the liquid-cooled primary circuit and a second heat exchange tube connected to the liquid-cooled secondary circuit; the second plate heat exchanger includes a third heat exchange tube connected to the first branch circuit and a fourth heat exchange tube connected to the liquid-cooled secondary circuit. The liquid cooling primary circuit includes a water supply pipe connected to the inlet of the first heat exchange tube of the first plate heat exchanger and a water return pipe connected to the outlet of the first heat exchange tube of the first plate heat exchanger. The water supply pipe is equipped with a first temperature sensor, a first pump device, a pressure sensor and a first regulating valve. The water supply pipe is used to draw water from the water tank of the outdoor condenser, and the water return pipe is used to return water to the water tank of the outdoor condenser. The liquid-cooled secondary circuit includes a second pump unit, a second temperature sensor, a liquid-cooled plate, and a third temperature sensor, which are connected sequentially from the outlet of the second heat exchange tube of the first plate heat exchanger to the inlet of the second heat exchange tube; the pipeline between the outlet of the second heat exchange tube of the first plate heat exchanger and the second pump unit is connected to the fourth heat exchange tube in the second plate heat exchanger. The first branch is used to divert a portion of the refrigerant from the direct expansion air-cooled circuit to the third heat exchange tube of the second plate heat exchanger to cool the liquid-cooled secondary circuit.

6. The cooling capacity control system according to claim 5, characterized in that, The direct expansion air-cooled circuit includes a refrigerant pump, a first electronic expansion valve, an air-cooled evaporator coil, and a compressor connected in sequence from the copper tube outlet to the copper tube inlet of the outdoor condenser; wherein, the refrigerant pump is connected in parallel with a first check valve, and the compressor is connected in parallel with a second check valve; the air-cooled evaporator coil is equipped with a fan; The air-cooled evaporator coils are connected in parallel to the first branch and the second branch, respectively.

7. The cooling capacity control system according to claim 6, characterized in that, The first branch includes a second electronic expansion valve and a third check valve connected in sequence; the pipeline between the second electronic expansion valve and the third check valve is connected to the third heat exchange tube of the second plate heat exchanger.

8. The cooling capacity control system according to claim 7, characterized in that, The third plate heat exchanger includes a fifth heat exchange tube connected to the second branch and a sixth heat exchange tube connected to the chilled water circuit; the second branch includes a third electronic expansion valve and a fourth check valve; the pipeline between the third electronic expansion valve and the fourth check valve is connected to the fifth heat exchange tube of the third plate heat exchanger.

9. The cooling capacity control system according to claim 8, characterized in that, The inlet of the chilled water circuit is connected between the pressure sensor and the first regulating valve in the water supply pipe of the liquid cooling primary circuit. The chilled water circuit includes a second regulating valve, a fourth temperature sensor and a chilled water coil connected in sequence. The outlet of the chilled water circuit is connected to the return water pipe of the liquid cooling primary circuit. The second regulating valve is connected to the sixth heat exchange tube of the third plate heat exchanger through a parallel chilled water branch. The chilled water branch includes a third regulating valve.

10. The cooling capacity control system according to any one of claims 5 to 9, characterized in that, The cooling capacity control system also includes a bypass pipeline, which is equipped with a bypass valve. The inlet of the bypass pipeline is connected to the water supply pipe of the liquid cooling primary circuit, and the outlet of the bypass pipeline is connected to the water return pipe of the liquid cooling primary circuit.

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