Double-cold-source system control method and device of data center

Abstract

The invention discloses a double-cold-source system control method and device of a data center, and relates to the technical field of data centers. A specific embodiment of the method comprises the following steps: acquiring load power and outdoor wet bulb temperature of a data center; according to the load power and the outdoor wet bulb temperature, the total operation power of the air cooling host refrigerating system and the total power corresponding to the water cooling host refrigerating system in at least three operation modes are calculated; determining a to-be-switched target cold source system and a target operation mode according to the outdoor wet bulb temperature, the total operation power of the air cooling host refrigeration system and the respective corresponding total power of the water cooling host refrigeration system in the at least three operation modes; and the double-cold-source system is controlled to be switched to the target cold source system and the target operation mode to operate. And the effects of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] This invention relates to the field of data center technology, and in particular to a control method, apparatus, electronic device, and computer-readable medium for a dual-cold-source system in a data center. Background Technology

[0002] In existing technologies, dual-cooling-source systems in data centers are often designed to meet the needs of 2N systems and do not have the ability to intelligently switch for energy saving. Under these circumstances, the dual-cooling-source system architecture in data centers often cannot switch effectively in a suitable environment, resulting in switching to high-energy-consuming systems and increasing carbon emissions and energy consumption. Summary of the Invention

[0003] In view of this, one embodiment of the present invention provides a control method for a dual-cooling-source system in a data center, which can switch operating modes according to load and environmental conditions, thereby reducing energy consumption and carbon emissions in the data center. The dual-cooling-source system includes an air-cooled mainframe cooling system and a water-cooled mainframe cooling system, and the method includes:

[0004] Obtain the data center's load power and outdoor wet-bulb temperature;

[0005] Based on the load power and outdoor wet-bulb temperature, calculate the total operating power of the air-cooled main unit refrigeration system and the total power of the water-cooled main unit refrigeration system in at least three operating modes.

[0006] Based on the outdoor wet-bulb temperature, the total operating power of the air-cooled main unit refrigeration system, and the total power of the water-cooled main unit refrigeration system in at least three operating modes, determine the target cold source system and target operating mode to be switched.

[0007] Control the dual-cold-source system to switch to the target cold-source system and the target operating mode.

[0008] In some embodiments of the present invention, the water-cooled main unit refrigeration system includes a water-cooled chiller unit and a plate heat exchanger subsystem, and the water-cooled main unit refrigeration system has at least three operating modes, including:

[0009] Plate heat exchanger mode where the water-cooled chiller unit is not working and the plate heat exchanger subsystem is working;

[0010] A hybrid mode in which water-cooled chillers and plate heat exchanger subsystems work together;

[0011] Water-cooled chiller unit is in operation, while plate heat exchanger subsystem is not in operation.

[0012] In some embodiments of the present invention, controlling the dual-cold-source system to switch to the target cold-source system and the target operating mode includes:

[0013] When the outdoor wet-bulb temperature exceeds the first threshold, the water-cooled host cooling system will operate in water-cooled refrigeration mode.

[0014] When the outdoor wet-bulb temperature is less than or equal to the second threshold, the water-cooled host refrigeration system operates in plate heat exchanger mode.

[0015] When the outdoor wet-bulb temperature is greater than the second threshold and less than or equal to the first threshold, and the total power of the hybrid mode is less than the total operating power of the air-cooled host refrigeration system, the water-cooled host refrigeration system is operated in the hybrid mode.

[0016] When the outdoor wet-bulb temperature is greater than the second threshold and less than or equal to the first threshold, and the total power of the hybrid mode is greater than the total operating power of the air-cooled main unit refrigeration system, the air-cooled main unit refrigeration system is operated.

[0017] In some embodiments of the present invention, the water-cooled host refrigeration system further includes a cooling water pump, a cooling tower, and a chilled water pump. Calculating the total power of the water-cooled host refrigeration system in water-cooled mode includes:

[0018] Calculate the current power of each water-cooled chiller, cooling water pump, cooling tower, and chilled water pump;

[0019] The total power of the water-cooled chiller mode is obtained based on the calculated current power of each water-cooled chiller, cooling water pump, cooling tower, and chilled water pump.

[0020] In some embodiments of the present invention, the air-cooled chiller system includes an air-cooled chiller unit and a circulating water pump; calculating the total operating power of the air-cooled chiller system includes:

[0021] Calculate the current power of the air-cooled chiller and the circulating water pump respectively;

[0022] Based on the calculated current power of the air-cooled chiller and circulating water pump, the total operating power of the air-cooled main unit refrigeration system is obtained.

[0023] In some embodiments of the present invention, calculating the total power of the water-cooled host refrigeration system in plate-cooling mode includes:

[0024] Based on the outdoor wet-bulb temperature and the rated cooling capacity of the plate heat exchanger subsystem, obtain the available cooling capacity of the plate heat exchanger subsystem;

[0025] If the load power is less than or equal to the available cooling capacity of the plate heat exchanger subsystem, it is determined that the water-cooled chiller unit is not working.

[0026] The total power of the plate heat exchanger mode is obtained based on the current power of the cooling tower, the current power of the cooling water pump, and the current power of the chilled water pump.

[0027] In some embodiments of the present invention, calculating the total power of the water-cooled host refrigeration system in hybrid mode includes:

[0028] Based on the outdoor wet-bulb temperature and the rated cooling capacity of the plate heat exchanger subsystem, obtain the available cooling capacity of the plate heat exchanger subsystem;

[0029] When the load power is verified to be greater than the available cooling capacity of the plate heat exchanger subsystem, the water-cooled chiller unit is determined to be in operation.

[0030] Based on the load power and the available cooling capacity of the plate heat exchanger subsystem, obtain the mixed-mode cooling load of the water-cooled chiller unit;

[0031] The mixed-mode power of the water-cooled chiller is obtained based on the rated power of the water-cooled chiller, the mixed-mode cooling load, the rated cooling capacity of the water-cooled chiller, and the environmental correction factor of the water-cooled chiller related to the outdoor wet-bulb temperature.

[0032] The total power of the mixed mode is obtained based on the current power of the cooling tower, the current power of the cooling water pump, the current power of the chilled water pump, and the mixed mode power of the water-cooled chiller unit.

[0033] In some embodiments of the present invention, the available cooling capacity of the plate heat exchanger subsystem is obtained based on the outdoor wet-bulb temperature and the rated cooling capacity of the plate heat exchanger subsystem, including:

[0034] When the outdoor wet-bulb temperature is greater than or equal to the return water temperature of the plate heat exchanger subsystem, the available cooling capacity of the plate heat exchanger subsystem is zero.

[0035] When the outdoor wet-bulb temperature is lower than the return water temperature of the plate heat exchanger subsystem, the available cooling capacity of the plate heat exchanger subsystem is obtained based on the rated cooling capacity, the actual temperature difference, and the rated temperature difference of the plate heat exchanger subsystem. The actual temperature difference of the plate heat exchanger subsystem is the difference between the return water temperature and the outdoor wet-bulb temperature.

[0036] Another aspect of this invention provides a control device for a dual-cooling-source system in a data center. The dual-cooling-source system includes an air-cooled mainframe cooling system and a water-cooled mainframe cooling system. The device includes an acquisition module, a power calculation module, an operating mode determination module, and a switching module.

[0037] The module is configured to acquire the data center's load power and outdoor wet-bulb temperature.

[0038] The power calculation module is configured to calculate the total operating power of the air-cooled host refrigeration system and the total power of the water-cooled host refrigeration system in at least three operating modes, based on the load power and the outdoor wet-bulb temperature.

[0039] The operation mode determination module is configured to determine the target cold source system and target operation mode to be switched based on the outdoor wet-bulb temperature, the total operating power of the air-cooled host refrigeration system, and the total power of the water-cooled host refrigeration system in at least three operation modes.

[0040] The switching module is configured to control the dual-cold-source system to switch to the target cold-source system and the target operating mode.

[0041] According to another aspect of the present invention, an electronic device is provided, comprising: one or more processors; and a storage device communicatively connected to the one or more processors for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the method provided in the embodiments of the present invention.

[0042] According to another aspect of the present invention, a computer-readable medium is provided having a computer program stored thereon, which, when executed by a processor, implements the method provided in the embodiments of the present invention.

[0043] One embodiment of the above invention has the following advantages or beneficial effects: by comparing the calculated power at different ambient wet-bulb temperatures, the optimal operating conditions of the system are obtained, and intelligent control is performed based on these conditions, thereby achieving the optimal energy-saving operation mode and the purpose of energy saving.

[0044] The further effects of the aforementioned unconventional alternative methods will be explained below in conjunction with specific implementation methods. Attached Figure Description

[0045] The accompanying drawings are provided to better understand the invention and are not intended to unduly limit the scope of the invention. Wherein:

[0046] Figure 1 This is a schematic diagram of the system architecture of a water-cooled host cooling system in a dual-cold-source system of a data center according to some embodiments of the present invention.

[0047] Figure 2 This is a schematic diagram of the system architecture of the air-cooled host cooling system in a dual-cold-source system of a data center according to some embodiments of the present invention;

[0048] Figure 3 This is a flowchart illustrating a dual-cold-source system control method for a data center according to some embodiments of the present invention;

[0049] Figure 4 This is a flowchart illustrating the calculation of the total power in the plate-switching mode in a dual-cold-source system control method for a data center according to some embodiments of the present invention.

[0050] Figure 5This is a schematic flowchart illustrating the calculation of the total power in a hybrid mode in a dual-cold-source system control method for a data center according to some embodiments of the present invention.

[0051] Figure 6 This is a functional architecture diagram of a dual-cold-source system control device for a data center according to some embodiments of the present invention.

[0052] Figure 7 This is an exemplary system architecture diagram in which embodiments of the present invention can be applied;

[0053] Figure 8 This is a schematic diagram of the structure of a computer system suitable for implementing terminal devices or servers of the present invention. Detailed Implementation

[0054] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention, including various details to aid understanding. These details should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0055] The concepts involved in the embodiments of the present invention will be introduced below.

[0056] The "dual-source cooling system" mentioned in this invention refers to an air conditioning system in which two independent cooling sources are configured in the same refrigeration system, and automatic switching or joint operation is achieved through intelligent control to improve the reliability, redundancy and energy efficiency of cooling supply. The "wet-bulb temperature" mentioned in this invention refers to the temperature measured by a wet-bulb thermometer (a thermometer wrapped in a damp cloth) when the air reaches a dynamic thermal-humidity balance under adiabatic evaporation conditions, where water continuously evaporates and carries away heat. The unit is usually °C (degrees Celsius). The "plate heat exchanger" mentioned in this invention refers to a plate heat exchanger, a highly efficient heat exchange device that uses corrugated metal heat transfer plates as the core heat exchange element, allowing two (or more) fluids at different temperatures to flow in opposite directions and cross-flow on both sides of the plates, achieving heat transfer through the plate walls.

[0057] In this embodiment of the invention, the data center adopts a dual-cold-source system for cooling. The dual-cold-source system includes an air-cooled host cooling system and a water-cooled host cooling system. When designing the cold source system, the air-cooled host cooling system and the water-cooled host cooling system can independently meet the design cooling load of the data center. Since the power consumption of the air-cooled host cooling system and the water-cooled host cooling system is different under different loads and ambient temperatures, and the water-cooled host cooling system has multiple operating modes with different power consumption for each mode, it is necessary to combine the cooling load and ambient temperature to determine the operating cooling system and the corresponding operating mode.

[0058] This invention provides a control method for a dual-cooling-source system in a data center. Based on the cooling load and ambient temperature, the method calculates the operating power of the air-cooled main unit and the water-cooled main unit under various modes, and obtains the cooling unit and operating mode with optimal power, thereby achieving energy saving and emission reduction.

[0059] In embodiments of the present invention, such as Figure 1 As shown, the water-cooled server refrigeration system 100 includes a water-cooled chiller unit 110, a cooling tower 120, a cooling water pump 130, a chilled water pump 140, and a plate heat exchanger subsystem 150. The water circulation in the water-cooled server refrigeration system 100 is divided into two types: cooling water circulation and chilled water circulation. The chilled water circulation is responsible for cooling the server, while the cooling water circulation is responsible for dissipating heat into the atmosphere. This involves heat exchange, and the plate heat exchanger subsystem 150 and the water-cooled chiller unit 110 are the devices responsible for this heat exchange. The cooling water pump 130 drives cooling water to the water-cooled chiller unit 110 and / or the plate heat exchanger subsystem 150 for heat exchange. The chilled water pump 140 drives chilled water from the data center 300 return water into the water-cooled chiller unit 110 and / or the plate heat exchanger subsystem 150 for heat exchange. The water-cooled chiller unit 110 removes heat from the chilled water through refrigerant refrigeration. The refrigerant refrigeration process uses a compressor, which generates heat, and the refrigerant's transition from a gaseous to a liquid state also generates heat. This heat is carried away by the cooling water. When the cooling water temperature is suitable, the plate heat exchanger subsystem 150 cools the returning chilled water using the input cooling water, removing heat from the chilled water. The chilled water from the water-cooled chiller unit 110 and / or the plate heat exchanger subsystem 150 enters the data center 300 and is fed into the precision air conditioner 400. There, it exchanges heat with the data center environment before returning to the chilled water pump for the next cycle. After exiting the water-cooled chiller unit 110 and / or the plate heat exchanger subsystem 150, the cooling water enters the cooling tower. After sufficient heat exchange with the outdoor environment, the cooling water temperature approaches the outdoor ambient temperature. The cooling water then returns to the cooling water pump 130 for the next cycle.

[0060] In some embodiments of the present invention, since the plate heat exchange subsystem 150 only exchanges heat through the temperature difference between cooling water and chilled water, the energy consumption is zero. However, effective heat exchange can only be achieved when the temperature of the cooling water is sufficiently lower than the return temperature of the chilled water, thereby reducing the return temperature of the chilled water.

[0061] In an embodiment of the present invention, valves are provided on the outlet pipes of the cooling water pump 130 and the chilled water pump 140. By controlling the valves, the flow direction of the cooling water and chilled water can be controlled, thereby selecting the water-cooled chiller unit 110 and / or the plate heat exchange subsystem 150 for cooling.

[0062] In embodiments of the present invention, when the outdoor wet-bulb temperature is below 5 degrees Celsius, the cooling tower 120 can reduce the temperature of the cooling water to near the wet-bulb temperature, allowing heat exchange to be performed solely using the plate heat exchange subsystem 150. When the outdoor wet-bulb temperature is greater than 5 degrees Celsius but less than 13 degrees Celsius, only a portion of the heat can be directly removed through heat exchange; the remaining portion still requires heat exchange via refrigerant cooling within the water-cooled chiller unit 110. Above 13 degrees Celsius, the cooling water temperature may be higher than the chilled water return temperature; in this case, the water-cooled chiller unit 110 must be used as an intermediate heat exchange device to exchange heat before dissipating the heat.

[0063] In embodiments of the present invention, such as Figure 2 As shown, the air-cooled main unit refrigeration system 200 is relatively simple, with no cooling water circulation, only chilled water circulation. The air-cooled main unit refrigeration system 200 includes an air-cooled chiller unit 210 and a circulating water pump 220. During operation, the air-cooled chiller unit 210 needs to be running for an extended period. It uses electric cooling to lower the temperature of the refrigerant, which then exchanges heat with the chilled water. The heat is then carried to the atmosphere by the coils and fans on the air-cooled chiller unit 210. The chilled water exiting the air-cooled chiller unit 210 is pumped by the circulating water pump 220 to the data center 300, where it exchanges heat with the precision air conditioner 400 before returning to the air-cooled chiller unit 210.

[0064] Since there is a power difference between the two modes used under different conditions based on the maximum cooling capacity and thermal efficiency of water-cooled and air-cooled units, the embodiments of the present invention are calculated and adjusted according to the actual parameters of the data center equipment.

[0065] Regarding the operating mode of the above dual-cooling-source system, such as Figure 3 As shown, this embodiment of the invention provides a control method for a dual-cold-source system in a data center, including:

[0066] S510: Obtain the data center's load power and outdoor wet-bulb temperature.

[0067] In this embodiment of the invention, the load power of the data center can be obtained by statistically analyzing the power consumption of the server room, the building structure load, and other heat source loads. The power consumption of the server room can be obtained by analyzing the total current of the server cluster in the data center. The building structure load and other heat source loads are set according to the environment and requirements during the data center design.

[0068] S520: Calculate the total operating power of the air-cooled main unit refrigeration system and the total power of the water-cooled main unit refrigeration system in at least three operating modes, based on the load power and outdoor wet-bulb temperature.

[0069] In the implementation of this invention, the water-cooled main unit refrigeration system includes a water-cooled chiller unit and a plate heat exchanger subsystem, and the water-cooled main unit refrigeration system has at least three operating modes, including:

[0070] Plate heat exchanger mode where the water-cooled chiller unit is not working and the plate heat exchanger subsystem is working;

[0071] A hybrid mode in which water-cooled chillers and plate heat exchanger subsystems work together;

[0072] Water-cooled chiller unit is in operation, while plate heat exchanger subsystem is not in operation.

[0073] In this embodiment of the invention, the water-cooled host refrigeration system includes a plate heat exchange subsystem, which consumes zero power, but its cooling capacity is related to the outdoor wet-bulb temperature. When the outdoor wet-bulb temperature is higher than the return water temperature, the plate heat exchange subsystem cannot provide cooling capacity. On the other hand, when the plate heat exchange subsystem cannot meet the requirements of the cooling load, the water-cooled chiller unit needs to be operated to provide cooling capacity. Therefore, the corresponding working mode can be selected according to the outdoor wet-bulb temperature and the load.

[0074] In some embodiments of the present invention, the power consumption of each cooling source system and operating mode is calculated under the same outdoor wet-bulb temperature and load conditions, thereby enabling intuitive comparison of power consumption and facilitating selection.

[0075] In some embodiments of the present invention, the water-cooled host refrigeration system further includes a cooling water pump, a cooling tower, and a chilled water pump. Calculating the total power of the water-cooled host refrigeration system in water-cooled mode includes:

[0076] Calculate the current power of each water-cooled chiller, cooling water pump, cooling tower, and chilled water pump;

[0077] The total power of the water-cooled chiller mode is obtained based on the calculated current power of each water-cooled chiller, cooling water pump, cooling tower, and chilled water pump.

[0078] In some embodiments of the present invention, based on the rated power P of the water-cooled chiller unit rated,chillerCurrent cooling load Q load (kW), Rated cooling capacity Q of water-cooled chiller unit rated,chiller The current power of the water-cooled chiller is obtained by taking the power of the chiller (kW) and the environmental correction factor k(H) related to the outdoor wet-bulb temperature, where k(H) = 1 + c × (HH) rated,chiller H is the outdoor wet-bulb temperature. rated,chiller This is the rated wet-bulb temperature, which can be adjusted according to actual site conditions. For example, it can be set to 24℃, with an environmental correction factor of c=0.02 / Current cooling load Q load (kW) represents the load power P (kW). In this embodiment of the invention, the current power P of the water-cooled chiller unit... chiller =Prated,chiller×(Q load / Q rated,chiller )×k(H).

[0079] In some embodiments of the present invention, when the water pump is a variable frequency drive, the power is proportional to the cube of the flow rate, based on the rated power P of the cooling water pump. rated,cwp Current cooling water flow rate (L) cw and rated cooling water flow rate L rated,cwp (m³ / h), obtain the current power P of the cooling water pump. cwp =P rated,cwp ×(L cw / L rated,cwp ) 3 When the water pump operates at a fixed frequency, the current power P of the cooling water pump is... cwp ≈P rated,cwp Cooling water flow rate (L) cw Adjustments are made according to different loads and outdoor wet-bulb temperatures to ensure that the inlet temperature of the cooling water meets the heat exchange requirements of the plate heat exchange subsystem or water-cooled chiller unit.

[0080] In some embodiments of the present invention, the cooling tower power mainly comes from the fan. In some embodiments, the fan is a variable frequency fan, and the power is proportional to the cube of the air volume, while the air volume depends on the cooling demand. The power P of the cooling tower can be used as a reference. rated,ct Current cooling load Q load (kW), Rated cooling capacity Q of water-cooled chiller unit rated,chiller The current power P of the cooling tower is obtained by using the cooling tower environmental correction factor g(H) related to the outdoor wet-bulb temperature. ct =P rated,ct ×(Q load / (Q rated,chiller ))^3×g(H), where g(H) is an ambient temperature correction factor (typically g(H) ≈ 1 or slightly greater than 1 at high temperatures). In some embodiments, P can be estimated. ct≈P rated,ct It may be linearly related to the load rate.

[0081] In some embodiments of the present invention, the rated power P of the chilled water pump can be used as a reference. rated,chwp Current chilled water flow rate (L) chw and rated chilled water flow rate L rated,chwp Obtain the current power P of the chilled water pump. chwp =P rated,chwp ×(L chw / (L rated,chwp ) 3 In some embodiments, when the chilled water pump is a fixed-frequency pump, P chwp ≈P rated,chwp Chilled water flow rate (L) chw Adjustments are made based on the chilled water return temperature to ensure that the chilled water return temperature meets the design temperature.

[0082] Based on the current power P of the water-cooled chiller unit chiller The current power P of the cooling water pump cwp The current power P of the cooling tower ct and the current power P of the chilled water pump chwp Obtain the total power P of the water cooling mode. total,water =P chiller +P cwp +P ct +P chwp .

[0083] In some embodiments of the present invention, the air-cooled chiller system includes an air-cooled chiller unit and a circulating water pump; calculating the total operating power of the air-cooled chiller system includes:

[0084] Calculate the current power of the air-cooled chiller and the circulating water pump respectively;

[0085] Based on the calculated current power of the air-cooled chiller and circulating water pump, the total operating power of the air-cooled main unit refrigeration system is obtained.

[0086] In some embodiments of the present invention, based on the rated power P of the air-cooled chiller unit rated,air Current cooling load Q load Rated cooling capacity Q of air-cooled chiller unit rated,air The current power P of the air-cooled chiller is obtained by using the environmental correction factor h(H) related to the outdoor wet-bulb temperature. air =P rated,air ×(Q load / Q rated,air)×h(H), where the cooling load is the load power. When the outdoor wet-bulb temperature H increases, the unit's coefficient of performance (COP) decreases, and h(H)>1; conversely, h(H)<1. For example, under rated operating conditions, h(H)=1. We can assume h(H)=1+m(HH) rated ), where H rated The rated ambient temperature is 32℃, and m is a coefficient (air cooling is more affected by temperature, and its value is 0.03 / ℃).

[0087] In some embodiments of the present invention, based on the rated power P of the circulating water pump rated,pump Current circulating water flow rate L chwp and rated circulating water flow rate L rated,pump Obtain the current power P of the circulating water pump. pump =P rated,pump ×(L chwp / L rated,pump ) 3 When the circulating water pump is a fixed-frequency pump, P pump ≈P rated,pump In some embodiments of the present invention, the circulating water flow rate L chwp Adjustments are made based on the circulating water return temperature to ensure that the circulating water return temperature meets the design temperature, such as 19℃.

[0088] Based on the current power of the air-cooled chiller unit and the current power of the circulating water pump, obtain the total operating power P of the air-cooled chiller system. total,air =P air + P pump .

[0089] In some embodiments of the present invention, in plate heat exchanger mode, the water-cooled chiller unit is not working, and the decision to adopt plate heat exchanger mode can be made by calculating whether the cooling capacity of the plate heat exchanger subsystem meets the load requirements. In some embodiments, such as Figure 4 As shown, the calculation of the total power of the water-cooled host refrigeration system in plate heat exchange mode includes:

[0090] S11: Obtain the available cooling capacity of the plate heat exchanger subsystem based on the outdoor wet-bulb temperature H and the rated cooling capacity of the plate heat exchanger subsystem.

[0091] In some embodiments of the present invention, the cooling capacity of the plate heat exchanger subsystem is related to the outdoor wet-bulb temperature H. The plate heat exchanger subsystem can operate when H is lower than the return water temperature.

[0092] In an embodiment of the present invention, the designed chilled water return temperature T return =19℃. The rated operating condition of the plate heat exchanger subsystem is based on the rated wet-bulb temperature T. rated,wb =5℃ (typical value), rated temperature difference ΔT rated=T return -T rated,wb =19-5=14℃. Specifically, to obtain the available cooling capacity, include:

[0093] When the outdoor wet-bulb temperature H is greater than or equal to the return water temperature T of the plate heat exchanger subsystem return At that time, the available cooling capacity Q of the plate heat exchanger subsystem available,plate It is zero;

[0094] When the outdoor wet-bulb temperature H is less than the return water temperature T of the plate heat exchanger subsystem return At that time, based on the rated cooling capacity Q of the plate heat exchanger subsystem rated,plate The actual temperature difference T of the plate heat exchanger subsystem return -H and the rated temperature difference ΔT between the plate heat exchanger subsystem rated Obtain the available cooling capacity Q of the plate heat exchanger subsystem. available,plate =Q rated,plate ×(T return -H) / ΔT rated The actual temperature difference of the plate heat exchanger subsystem is the difference between the return water temperature of the heat exchanger subsystem and the outdoor wet-bulb temperature.

[0095] S12: If the load power is less than or equal to the available cooling capacity of the plate heat exchanger subsystem, determine that the water-cooled chiller unit is not working.

[0096] In some embodiments of the present invention, the cooling capacity Q of the plate heat exchanger subsystem actually used for cooling is... used,plate =min(Q available,plate ,P).

[0097] S13: Based on the current power of the cooling tower, the current power of the cooling water pump, and the current power of the chilled water pump, obtain the total power P in plate heat exchange mode. plate = P chwp +P cwp +P ct .

[0098] In some embodiments of the present invention, if the cooling capacity of the plate heat exchanger subsystem cannot meet the load requirements, the water-cooled chiller unit will operate to supplement the unmet demand, such as... Figure 5 As shown, the total power of the water-cooled main unit refrigeration system in hybrid mode is calculated, including:

[0099] S21: Based on the outdoor wet-bulb temperature and the rated cooling capacity of the plate heat exchanger subsystem, obtain the available cooling capacity Q of the plate heat exchanger subsystem. available,plate The data collection steps are similar to those in S11.

[0100] S22: Verify that the load power P is greater than the available cooling capacity Q of the plate heat exchanger subsystem.available,plate At that time, determine the operation of the water-cooled chiller unit.

[0101] S23: Obtain the mixed-mode cooling load Q of the water-cooled chiller unit based on the load power and the available cooling capacity of the plate heat exchanger subsystem. load,chiller =PQ available,plate .

[0102] S24: Obtain the mixed-mode power P of the water-cooled chiller based on the rated power of the water-cooled chiller, the mixed-mode cooling load, the rated cooling capacity of the water-cooled chiller, and the environmental correction factor of the water-cooled chiller related to the outdoor wet-bulb temperature. chiller1 =P rated,chiller ×(Q load,chiller / Q rated,chiller ) ×k(H);

[0103] S25: Based on the current power of the cooling tower, the current power of the cooling water pump, the current power of the chilled water pump, and the mixed-mode power of the water-cooled chiller unit, obtain the total power P in the mixed mode. hybrid = P chwp +P cwp +P ct +P chiller1 .

[0104] S530: Based on the outdoor wet-bulb temperature, the total operating power of the air-cooled main unit refrigeration system, and the total power of the water-cooled main unit refrigeration system in at least three operating modes, determine the target cold source system and target operating mode to be switched.

[0105] In some embodiments of the present invention, controlling the dual-cold-source system to switch to the target cold-source system and the target operating mode includes:

[0106] When the outdoor wet-bulb temperature exceeds the first threshold, the water-cooled host cooling system will operate in water-cooled refrigeration mode.

[0107] When the outdoor wet-bulb temperature is less than or equal to the second threshold, the water-cooled host refrigeration system operates in plate heat exchanger mode.

[0108] When the outdoor wet-bulb temperature is greater than the second threshold and less than or equal to the first threshold, and the total power P in the hybrid mode... hybrid Less than the total operating power P of the air-cooled main unit refrigeration system total,air At that time, the water-cooled host refrigeration system operates in hybrid mode;

[0109] When the outdoor wet-bulb temperature is greater than the second threshold and less than or equal to the first threshold, and the total power P in the hybrid mode... hybrid Greater than the total operating power P of the air-cooled main unit refrigeration system total,air At that time, the air-cooled main unit refrigeration system is running.

[0110] In some embodiments of the present invention, the first threshold can be 13°C and the second threshold can be 5°C.

[0111] In embodiments of the present invention, when the outdoor wet-bulb temperature is less than 5°C, the temperature difference between the outdoor wet-bulb temperature and the chilled water return temperature (19°C) and supply temperature (14°C) is sufficiently large, and the cooling capacity generated by the plate heat exchanger subsystem is sufficient to support the load requirements. Therefore, the water-cooled main unit refrigeration system can be operated in plate heat exchanger mode. When the outdoor wet-bulb temperature is greater than 13°C, the temperature of the cooling water supplied to the plate heat exchanger subsystem by the cooling water pump, even under high flow rate heat exchange, is close to or above 16°C. The temperature difference with the chilled water return temperature is small, and the cooling capacity provided by the plate heat exchanger subsystem is small, or even zero, making it difficult to meet the load requirements. Therefore, the plate heat exchanger subsystem can be shut down. In addition, at this temperature, the air-cooled main unit refrigeration system consumes a large amount of power, so the water-cooled main unit refrigeration system is selected to be operated in water-cooled refrigeration mode.

[0112] S540: Control the dual-cold-source system to switch to the target cold-source system and target operating mode. Based on the target cold-source system and target operating mode determined in step S530, perform the cold-source system switching and mode switching.

[0113] In this embodiment of the invention, after multiple runs, the flow rate of each water pump in each mode can be determined based on the load and outdoor wet-bulb temperature, thereby enabling the determination of the power consumption of the water pump.

[0114] This invention, through power consumption calculation and comparison at different ambient wet-bulb temperatures, determines the optimal operating condition of the system and performs intelligent or manual control based on this condition, thereby achieving the optimal energy-saving operation mode and energy-saving purpose.

[0115] like Figure 6 As shown, this embodiment of the invention also provides a dual-cooling-source system control device 600 for a data center. The dual-cooling-source system includes an air-cooled mainframe cooling system and a water-cooled mainframe cooling system. The device 600 includes an acquisition module 610, a power calculation module 620, an operating mode determination module 630, and a switching module 640.

[0116] The acquisition module 610 is configured to acquire the load power and outdoor wet-bulb temperature of the data center;

[0117] The power calculation module 620 is configured to calculate the total operating power of the air-cooled host refrigeration system and the total power of the water-cooled host refrigeration system in at least three operating modes, based on the load power and the outdoor wet-bulb temperature.

[0118] The operating mode determination module 630 is configured to determine the target cold source system and target operating mode to be switched based on the outdoor wet-bulb temperature, the total operating power of the air-cooled host refrigeration system, and the total power of the water-cooled host refrigeration system in at least three operating modes.

[0119] The switching module 640 is configured to control the dual-cold source system to switch to the target cold source system and the target operating mode.

[0120] The device features of the embodiments of the present invention can be referred to the features of the methods and steps of the embodiments of the present invention, and the device embodiments can be combined with the features of the method embodiments to obtain new embodiments, and vice versa, and will not be repeated here.

[0121] Figure 7 An exemplary system architecture 1000 for a dual-cold-source system control method or a dual-cold-source system control device for a data center, which can be applied according to embodiments of the present invention, is shown.

[0122] like Figure 7 As shown, system architecture 1000 may include terminal devices 1001, 1002, and 1003, network 1004, and server 1005. Network 1004 is used as a medium to provide communication links between terminal devices 1001, 1002, and 1003 and server 1005. Network 1004 may include various connection types, such as wired or wireless communication links or fiber optic cables, etc.

[0123] Users can use terminal devices 1001, 1002, and 1003 to interact with server 1005 via network 1004 to receive or send messages, etc. Various communication client applications can be installed on terminal devices 1001, 1002, and 1003, such as shopping applications, web browser applications, search applications, instant messaging tools, email clients, social media platform software, etc. (for example only).

[0124] Terminal devices 1001, 1002, and 1003 can be various electronic devices with displays and web browsing capabilities, including but not limited to smartphones, tablets, laptops, and desktop computers.

[0125] Server 1005 can be a server that provides various services, such as a backend management server that supports shopping websites browsed by users using terminal devices 1001, 1002, and 1003 (for example only). The backend management server can analyze and process data such as received product information query requests, and feed back the processing results (such as target push information, product information - for example only) to the terminal devices.

[0126] It should be noted that the dual-cold source system control method for data centers provided in this embodiment of the invention is generally executed by terminal devices 1001, 1002, and 1003. Correspondingly, the dual-cold source system control implementation device for data centers is generally installed in terminal devices 1001, 1002, and 1003.

[0127] It should be understood that Figure 7 The number of terminal devices, networks, and servers shown is merely illustrative. Depending on implementation needs, any number of terminal devices, networks, and servers can be included.

[0128] The methods or apparatus in the embodiments of the present invention can be operated on electronic devices, such as terminal devices or servers.

[0129] The following is for reference. Figure 8 It shows a schematic diagram of the structure of a computer system 1100 suitable for implementing terminal devices or servers of the present invention. The methods or apparatus for implementing the methods in the embodiments of the present invention can be implemented on the computer system 1100. Figure 8 The terminal device or server shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of the present invention.

[0130] like Figure 8 As shown, the computer system 1100 includes a central processing unit (CPU) 1101, which can perform various appropriate actions and processes based on programs stored in read-only memory (ROM) 1102 or programs loaded from storage section 1108 into random access memory (RAM) 1103. The RAM 1103 also stores various programs and data required for the operation of the system 1100. The CPU 1101, ROM 1102, and RAM 1103 are interconnected via a bus 1104. An input / output (I / O) interface 1105 is also connected to the bus 1104.

[0131] The following components are connected to I / O interface 1105: an input section 1106 including a keyboard, mouse, etc.; an output section 1107 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 1108 including a hard disk, etc.; and a communication section 1109 including a network interface card such as a LAN card, modem, etc. The communication section 609 performs communication processing via a network such as the Internet. A drive 1110 is also connected to I / O interface 1105 as needed. A removable medium 1111, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on drive 1110 as needed so that computer programs read from it can be installed into storage section 1108 as needed.

[0132] In particular, according to the embodiments disclosed in this invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this invention include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 1109, and / or installed from removable medium 1111. When the computer program is executed by central processing unit (CPU) 1101, it performs the functions defined above in the system of this invention.

[0133] It should be noted that the computer-readable medium shown in this invention can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this invention, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0134] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0135] The units or modules described in the embodiments of the present invention can be implemented in software or hardware. The described units or modules can also be housed in a processor; for example, a processor can be described as including a sending unit (or "module"), an acquisition unit, a determining unit, and a first processing unit. The names of these units or modules do not necessarily limit the specific unit or module itself; for example, a sending unit can also be described as "a unit that sends an image acquisition request to a connected server."

[0136] In another aspect, the present invention also provides a computer-readable medium, which may be included in the device described in the above embodiments; or it may exist independently and not assembled into the device. The computer-readable medium carries one or more programs that, when executed by the device, cause the device to perform the methods described above.

[0137] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A control method for a dual-cold-source system in a data center, characterized in that, The dual-source cooling system includes an air-cooled main unit refrigeration system and a water-cooled main unit refrigeration system, and the method includes: Obtain the load power and outdoor wet-bulb temperature of the data center; Based on the load power and the outdoor wet-bulb temperature, calculate the total operating power of the air-cooled main unit refrigeration system and the total power of the water-cooled main unit refrigeration system in at least three operating modes. Based on the outdoor wet-bulb temperature, the total operating power of the air-cooled main unit refrigeration system, and the total power of the water-cooled main unit refrigeration system in at least three operating modes, determine the target cold source system and target operating mode to be switched. Control the dual-cold-source system to switch to the target cold-source system and the target operating mode.

2. The method according to claim 1, characterized in that, The water-cooled chiller system includes a water-cooled chiller unit and a plate heat exchanger subsystem, and the water-cooled chiller system has at least three operating modes: The water-cooled chiller unit is not working, and the plate heat exchanger subsystem is working in the plate heat exchanger mode; The hybrid mode in which the water-cooled chiller unit and the plate heat exchanger subsystem work together; The water-cooled chiller unit is in operation, while the plate heat exchanger subsystem is not in operation.

3. The method according to claim 2, characterized in that, The control of switching the dual-cold-source system to the target cold-source system and the target operating mode includes: When the outdoor wet-bulb temperature is greater than the first threshold, the water-cooled host refrigeration system is operated in water-cooled refrigeration mode. When the outdoor wet-bulb temperature is less than or equal to the second threshold, the water-cooled host refrigeration system operates in plate heat exchanger mode. When the outdoor wet-bulb temperature is greater than the second threshold and less than or equal to the first threshold, and the total power of the hybrid mode is less than the total operating power of the air-cooled host refrigeration system, the water-cooled host refrigeration system is operated in the hybrid mode. When the outdoor wet-bulb temperature is greater than the second threshold and less than or equal to the first threshold, and the total power of the hybrid mode is greater than the total operating power of the air-cooled main unit refrigeration system, the air-cooled main unit refrigeration system is operated.

4. The method according to claim 2, characterized in that, The water-cooled main unit refrigeration system also includes a cooling water pump, a cooling tower, and a chilled water pump. The total power of the water-cooled main unit refrigeration system in water-cooled mode is calculated, including: Calculate the current power of each of the water-cooled chiller unit, the cooling water pump, the cooling tower, and the chilled water pump. The total power of the water-cooled chiller mode is obtained based on the calculated current power of each of the water-cooled chiller, cooling water pump, cooling tower and chilled water pump.

5. The method according to claim 1, characterized in that, The air-cooled chiller system includes an air-cooled chiller unit and a circulating water pump; the total operating power of the air-cooled chiller system is calculated, including: Calculate the current power of each of the air-cooled chiller and the circulating water pump; Based on the calculated current power of each of the air-cooled chiller unit and the circulating water pump, the total operating power of the air-cooled main unit refrigeration system is obtained.

6. The method according to claim 4, characterized in that, Calculate the total power of the water-cooled host refrigeration system in plate-cooling mode, including: Based on the outdoor wet-bulb temperature and the rated cooling capacity of the plate heat exchanger subsystem, the available cooling capacity of the plate heat exchanger subsystem is obtained; If the load power is less than or equal to the available cooling capacity of the plate heat exchanger subsystem, it is determined that the water-cooled chiller unit is not working. The total power of the plate heat exchange mode is obtained based on the current power of the cooling tower, the current power of the cooling water pump, and the current power of the chilled water pump.

7. The method according to claim 4, characterized in that, Calculate the total power of the water-cooled main unit refrigeration system in hybrid mode, including: Based on the outdoor wet-bulb temperature and the rated cooling capacity of the plate heat exchanger subsystem, the available cooling capacity of the plate heat exchanger subsystem is obtained; When the load power is verified to be greater than the available cooling capacity of the plate heat exchanger subsystem, the water-cooled chiller unit is determined to be operational. The mixed-mode cooling load of the water-cooled chiller unit is obtained based on the load power and the available cooling capacity of the plate heat exchanger subsystem. The mixed-mode power of the water-cooled chiller is obtained based on the rated power of the water-cooled chiller, the mixed-mode cooling load, the rated cooling capacity of the water-cooled chiller, and the environmental correction factor of the water-cooled chiller related to the outdoor wet-bulb temperature. The total power of the mixed mode is obtained based on the current power of the cooling tower, the current power of the cooling water pump, the current power of the chilled water pump, and the mixed mode power of the water-cooled chiller unit.

8. The method according to claim 6 or 7, characterized in that, The step of obtaining the available cooling capacity of the plate heat exchanger subsystem based on the outdoor wet-bulb temperature and the rated cooling capacity of the plate heat exchanger subsystem includes: When the outdoor wet-bulb temperature is greater than or equal to the return water temperature of the plate heat exchanger subsystem, the available cooling capacity of the plate heat exchanger subsystem is zero. When the outdoor wet-bulb temperature is lower than the return water temperature of the plate heat exchanger subsystem, the available cooling capacity of the plate heat exchanger subsystem is obtained based on the rated cooling capacity of the plate heat exchanger subsystem, the actual temperature difference of the plate heat exchanger subsystem, and the rated temperature difference of the plate heat exchanger subsystem, wherein the actual temperature difference of the plate heat exchanger subsystem is the difference between the return water temperature of the heat exchanger subsystem and the outdoor wet-bulb temperature.

9. A control device for a dual-cold-source system in a data center, characterized in that, The dual-cold-source system includes an air-cooled main unit refrigeration system and a water-cooled main unit refrigeration system; the device includes an acquisition module, a power calculation module, an operating mode determination module, and a switching module, wherein, The acquisition module is configured to acquire the load power and outdoor wet-bulb temperature of the data center. The power calculation module is configured to calculate the total operating power of the air-cooled host refrigeration system and the total power of the water-cooled host refrigeration system in at least three operating modes, based on the load power and the outdoor wet-bulb temperature. The operating mode determination module is configured to determine the target cold source system and target operating mode to be switched based on the outdoor wet-bulb temperature, the total operating power of the air-cooled host refrigeration system, and the total power of the water-cooled host refrigeration system in at least three operating modes. The switching module is configured to control the dual-cold-source system to switch to the target cold-source system and the target operating mode.

10. An electronic device, characterized in that, include: One or more processors; A storage device, communicatively connected to one or more processors, used to store one or more programs. When the one or more programs are executed by the one or more processors, the one or more processors implement the method as described in any one of claims 1-8.

11. A computer-readable medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1-8.

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