Method, device, equipment and medium for regulating water inlet temperature of high-efficiency machine room cooling machine

Abstract

The present application relates to the technical field of high-efficiency computer room cooling water system control, and particularly relates to a high-efficiency computer room cooling water temperature adjustment method, device, equipment and medium. The method comprises: collecting the operation parameters of the high-efficiency computer room cooling water system in real time; calculating the cooling water temperature deviation value and the condenser real-time heat dissipation based on the operation parameters; and calculating the target operation frequency of each tower fan when all the cooling towers are running according to the temperature deviation value and the condenser real-time heat dissipation. The present application can solve the problems that the existing control technology is difficult to accurately and stably control the cooling water temperature to match the cooling water demand, cannot realize optimal control of the cooling tower fan power consumption, and has poor adaptability to complex working conditions, which easily causes the computer room to have reduced operation efficiency, increased overall energy consumption and operation and maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of high-efficiency computer room cooling water control technology, and in particular to a method, device, equipment and medium for adjusting the inlet water temperature of a high-efficiency computer room chiller. Background Technology

[0002] With the industry trend of building energy conservation and high-efficiency data center construction, the cooling water system, as the core supporting system of the chiller unit, directly affects the cooling efficiency, operational stability and overall energy consumption of the data center. It is a key link in the design and operation of high-efficiency data centers and has attracted much attention from the industry.

[0003] Currently, most high-efficiency computer room cooling water systems adopt a cooling tower control method based on the number of chiller units in operation and the set value of cooling water outlet temperature. This method follows the principle of single cooling tower operating at full load and only performs simple on / off logic control on the cooling tower. Some solutions will make basic frequency adjustments to the cooling tower fan according to the operating conditions, but no refined adjustment strategy adapted to the whole system has been formed.

[0004] Existing control technologies cannot accurately regulate cooling water based on actual operating conditions. They are unable to stably match the cooling water temperature to the chiller's inlet water requirements, nor can they achieve optimal control of cooling tower fan power consumption, resulting in insufficient energy-saving potential. Furthermore, they are poorly adaptable to load changes and environmental fluctuations, easily causing cooling water temperature fluctuations, affecting the chiller's operating efficiency, and ultimately increasing the operating and maintenance costs of the computer room system, resulting in a double waste of energy and money. Summary of the Invention

[0005] This invention provides a method, device, equipment, and medium for adjusting the inlet water temperature of a chiller in a computer room, in order to solve the problems in existing control technologies that are difficult to accurately and stably control the cooling water temperature to match the chiller's inlet water requirements, cannot achieve optimal control of cooling tower fan power consumption, and have poor adaptability to complex operating conditions, which can easily lead to reduced chiller operating efficiency and increased overall energy consumption and maintenance costs of the computer room.

[0006] In a first aspect, embodiments of the present invention provide a method for adjusting the inlet water temperature of a high-efficiency computer room chiller, comprising: Real-time acquisition of operating parameters of high-efficiency computer room cooling water systems; Based on the operating parameters, the cooling water temperature deviation and the real-time heat dissipation of the condenser are calculated. Based on the temperature deviation value and the real-time heat dissipation of the condenser, the target operating frequency of each tower fan is calculated when all cooling towers are running.

[0007] In one possible implementation, the operating parameters include: cooling tower outlet water temperature, outdoor dry bulb temperature, and outdoor wet bulb temperature; Based on the aforementioned operating parameters, the cooling water temperature deviation and the real-time heat dissipation of the condenser are calculated, including: Based on the outdoor wet-bulb temperature and the preset control logic, the current target temperature of the cooling water outlet is determined; The current actual cooling water outlet temperature is determined based on the average of all the cooling tower outlet temperatures. The absolute value of the difference between the current target temperature of the cooling water outlet and the current actual temperature of the cooling water outlet is taken as the cooling water temperature deviation value.

[0008] In one possible implementation, the operating parameters further include: cooling tower inlet water temperature, cooling water flow rate, and condenser heat dissipation; Based on the aforementioned operating parameters, the real-time heat dissipation of the condenser is calculated, including: Calculate the temperature difference between the inlet water temperature and the outlet water temperature of each cooling tower. Calculate the product of the temperature difference and the cooling water flow rate; The sum of the products corresponding to all cooling towers is taken as the total heat dissipation of the current system condenser; The average of the total heat dissipation and the sum of the condenser heat dissipation is taken as the current real-time heat dissipation of the condenser.

[0009] In one possible implementation, based on the temperature deviation value and the real-time heat dissipation of the condenser, the target operating frequency of each tower fan is calculated when all cooling towers are running, including: Detect whether the temperature deviation value is greater than a preset temperature threshold; If the temperature deviation value is greater than the preset temperature threshold, then... After updating the number of adjustments, according to Calculate the target operating frequency of each tower fan; in, This indicates the operating frequency of each cooling tower's fan under the current load and current outlet water temperature. Indicates the equipment aging factor. This represents the local correction factor. This indicates the minimum operating frequency of each cooling tower's fan under minimum load. This indicates the current real-time heat dissipation of the condenser. Indicates the minimum heat dissipation load of the condenser. Indicates the maximum heat dissipation load of the condenser. This indicates the current actual outlet temperature of the cooling water. This indicates the current target outlet temperature of the cooling water. This indicates the outdoor wet-bulb temperature. Indicates the number of adjustments.

[0010] In one possible implementation, after detecting whether the temperature deviation value is greater than a preset temperature threshold, the method further includes: If the temperature deviation value is less than or equal to the preset temperature threshold, then the fan will operate at the target operating frequency of each tower fan.

[0011] In one possible implementation, if the temperature deviation value is greater than the preset temperature threshold, then according to After calculating the target operating frequency of each tower fan, the following is also included: After the frequency change timer has run for a preset time, the process jumps to the step of detecting whether the temperature deviation value is greater than the preset temperature threshold and then proceeds to the next step.

[0012] One possible implementation also includes: when When the value is 1, the cooling tower fan is turned off, and the condenser dissipates heat by relying on natural evaporation.

[0013] Secondly, embodiments of the present invention provide a device for regulating the inlet water temperature of a high-efficiency computer room chiller, comprising: The data acquisition module is used to collect the operating parameters of the high-efficiency computer room cooling water system in real time. The calculation module is used to calculate the cooling water temperature deviation and the real-time heat dissipation of the condenser based on the operating parameters. The calculation module is also used to calculate the target operating frequency of each tower fan when all cooling towers are running, based on the temperature deviation value and the real-time heat dissipation of the condenser.

[0014] Thirdly, embodiments of the present invention provide an apparatus including a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method described in the first aspect or any possible implementation thereof.

[0015] Fourthly, embodiments of the present invention provide a computer-readable medium storing a computer program that, when executed by a processor, implements the methods described in the first aspect or any possible implementation thereof.

[0016] This invention provides a method, apparatus, equipment, and medium for adjusting the inlet water temperature of a high-efficiency computer room chiller. It collects real-time operating parameters of the high-efficiency computer room cooling water system; based on these parameters, it calculates the cooling water temperature deviation and the real-time heat dissipation of the condenser, providing a clear basis for fan frequency adjustment and core input parameters that closely match the actual load, eliminating detection and calculation errors and making subsequent frequency adjustment more targeted. Based on the temperature deviation and the real-time heat dissipation of the condenser, the target operating frequency of each tower fan is calculated when all cooling towers are running, thereby accurately matching the actual system conditions and controlling the chiller inlet water temperature within the set range, ensuring efficient and stable operation of the chiller and precise control of the chiller inlet water temperature. It fully utilizes the advantage of all cooling towers running, rationally adjusts the cooling tower fan frequency, and increases the heat exchange area, allowing the fans to operate at low frequencies, significantly reducing cooling tower power consumption and improving the overall energy efficiency of the computer room. This solves problems such as poor chiller inlet water temperature control, high cooling tower fan energy consumption, and poor adaptability to complex operating conditions under existing comfort air conditioning high-efficiency computer room control strategies. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a flowchart illustrating the implementation of the method for adjusting the inlet water temperature of a high-efficiency computer room chiller provided in this embodiment of the invention. Figure 2 This is a schematic diagram of the operating parameter acquisition system provided in an embodiment of the present invention; Figure 3 This is a flowchart illustrating the implementation of the method for calculating the target operating frequency of each tower fan provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of the structure of the high-efficiency chiller inlet water temperature adjustment device provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a high-efficiency computer room chiller inlet water temperature adjustment device provided in another embodiment of the present invention; Figure 6 This is a schematic diagram of the device provided in an embodiment of the present invention. Detailed Implementation

[0019] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0020] See Figure 1The document illustrates a flowchart of an efficient method for adjusting the inlet water temperature of a computer room chiller, as provided in an embodiment of the present invention. Details are as follows: Step 101: Real-time acquisition of operating parameters of the high-efficiency computer room cooling water system.

[0021] This step involves deploying various sensors and monitoring devices at corresponding locations within the high-efficiency chiller units and cooling towers in the computer room to establish a system for acquiring the operating parameters of the cooling water system. This enables real-time detection, acquisition, and transmission of comprehensive system operating data, providing complete and accurate raw data support for subsequent calculations and judgments related to chiller inlet water temperature regulation. The acquired operating parameters cover multiple dimensions, including equipment operating status, temperature and flow rate, heat load, environmental parameters, and basic setting parameters. Figure 2 The diagram shows a schematic of the operating parameter acquisition system. In the diagram, 1, 2, 5, and 6 are water pipe temperature sensors. Temperature sensors 1 and 2 are used to collect the water temperature at the inlet and outlet of the chiller unit, respectively; temperature sensors 5 and 6 are used to collect the water temperature at the inlet and outlet of the cooling tower, respectively; 9 is an outdoor air temperature sensor; 10 is a humidity sensor; 3 is a flow sensor; 4 is an energy sensor (installed on the main supply and return water pipes before the cooling water pump inlet, used to calculate the current condenser heat dissipation); 7 is a display screen used to display the frequency data values ​​of each fan; and 8 is a frequency change timer used to record the duration of fan frequency changes. All sensors and monitoring devices are configured according to... Figure 2 The devices are installed at the corresponding monitoring points according to the specified locations. All operating parameters detected by the acquisition devices are transmitted in real time to the data storage center in the central control room of the high-efficiency computer room. This not only provides data input for subsequent control strategy calculations and guidance, but also preserves complete data for the analysis of historical operating data and the correction of control strategy patterns.

[0022] The operational data collected by the operational parameter acquisition system may include: Core equipment operating parameter acquisition: Collect the inlet and outlet water temperatures of all cooling towers, the real-time operating status of each cooling tower (including normal operation and fault feedback status), and the current operating frequency of the fans; collect the inlet and outlet water temperatures of the chiller units, the cooling water flow rate, and the heat dissipation that the chiller unit condenser currently needs to eliminate.

[0023] Outdoor environmental parameter acquisition: Environmental monitoring devices are deployed near the outdoor cooling tower to collect outdoor dry-bulb temperature and outdoor wet-bulb temperature in real time, providing environmental basis for the logical calculation of the current actual cooling water outlet temperature.

[0024] System basic setting parameter acquisition: Based on the design and operation characteristics of the high-efficiency computer room cooling water system, the maximum allowable heat dissipation load and the minimum allowable heat dissipation load of the condenser are collected; at the same time, the minimum operating frequency of each tower fan is obtained when the condenser is at the minimum heat dissipation load and all cooling towers are in operation; the cooling water temperature setting logic formula related to the outdoor temperature is retrieved synchronously as the basis for subsequent cooling water outlet temperature setting calculation.

[0025] Step 102: Based on the operating parameters, calculate the cooling water temperature deviation and the real-time heat dissipation of the condenser.

[0026] Based on the operating parameters collected in step 101, this step obtains the cooling water temperature deviation value and the real-time heat dissipation of the condenser through preset logical operations and numerical calculation methods. These two values ​​serve as the core input parameters for subsequent cooling tower fan frequency calculation, providing accurate numerical basis for frequency adjustment determination and calculation. The specific calculation process is divided into two parts: cooling water temperature deviation value calculation and condenser real-time heat dissipation calculation.

[0027] In one embodiment, the operating parameters include: cooling tower outlet water temperature, outdoor dry bulb temperature, and outdoor wet bulb temperature; Based on operating parameters, the cooling water temperature deviation and the real-time heat dissipation of the condenser are calculated, including: Based on the outdoor wet-bulb temperature and preset control logic, the current target temperature of the cooling water outlet is determined; The current actual outlet temperature of the cooling water is determined based on the average of the outlet temperatures of all cooling towers. The absolute value of the difference between the current target temperature of the cooling water outlet and the current actual temperature of the cooling water outlet is taken as the cooling water temperature deviation value.

[0028] Optionally, based on the outdoor wet-bulb temperature in the operating parameters, and combined with the preset control logic for cooling water temperature related to the outdoor temperature, the target cooling water outlet temperature under the current operating conditions is determined. This temperature is the target control value for the cooling water outlet temperature, which is adapted to the local outdoor ambient temperature. Here, the preset control logic for the cooling water temperature is the control logic that is set in advance in the system. In this embodiment, the specific content of this control logic is not limited. For example, this control logic can be 3°C more than the current outdoor wet-bulb temperature.

[0029] Then, extract the outlet water temperature of all cooling towers from the operating parameters, calculate the arithmetic mean of the outlet water temperatures of all cooling towers, and determine this average as the current actual outlet water temperature of the cooling water. This eliminates temperature detection errors from a single cooling tower and ensures the accuracy of water temperature data. Finally, calculate the current target outlet temperature of the cooling water. Compared with the current actual temperature of cooling water outlet The absolute value of the difference is taken as the cooling water temperature deviation value. This deviation value is used to determine whether the frequency adjustment calculation of the cooling tower fan needs to be started subsequently.

[0030] In one embodiment, the operating parameters further include: cooling tower inlet water temperature, cooling water flow rate, and condenser heat dissipation; Based on operating parameters, the real-time heat dissipation of the condenser is calculated, including: Calculate the temperature difference between the inlet water temperature and the outlet water temperature of each cooling tower. Calculate the product of the temperature difference and the cooling water flow rate; The sum of the products corresponding to all cooling towers is taken as the total heat dissipation of the current system condenser; The average of the total heat dissipation and the sum of the condenser heat dissipation is taken as the current real-time heat dissipation of the condenser.

[0031] Optionally, calculate the temperature difference by subtracting the cooling tower outlet temperature from the cooling tower inlet water temperature for each cooling tower. For example, the temperature difference can be calculated using... This indicates the temperature difference corresponding to each cooling tower. With cooling water flow rate Multiply each product sequentially, then sum the products corresponding to all cooling towers to obtain the total heat dissipation of the current system's condenser. ,Right now ; Extract the condenser heat dissipation directly detected by the energy sensor from the operating parameters. Total heat dissipation Heat dissipation from the condenser After summing, calculate the arithmetic mean, and determine this average value as the current real-time heat dissipation of the condenser. ,Right now .

[0032] Step 103: Based on the temperature deviation value and the real-time heat dissipation of the condenser, calculate the target operating frequency of each tower fan when all cooling towers are running.

[0033] This step uses the temperature deviation value obtained in step 102 and the real-time heat dissipation of the condenser as the core basis. On the basis of keeping all cooling towers running, the target operating frequency of each tower fan is calculated by using preset threshold judgment and mathematical model calculation. At the same time, frequency correction cycle and special working condition control logic are set to ensure that the fan frequency calculation results are adapted to the current operating conditions of the computer room cooling water system, providing a basis for frequency adjustment for precise control of chiller inlet water temperature.

[0034] In one embodiment, such as Figure 3As shown, based on the temperature deviation value and the real-time heat dissipation of the condenser, the target operating frequency of each tower fan is calculated when all cooling towers are running, including: Check whether the temperature deviation value is greater than the preset temperature threshold; If the temperature deviation is greater than the preset temperature threshold, then... After updating the number of adjustments, according to Calculate the target operating frequency of each tower fan; in, This indicates the operating frequency of each cooling tower's fan under the current load and current outlet water temperature. , This indicates the equipment aging factor, which is related to the service life of the cooling tower equipment. It can be provided by the manufacturer. This represents the local correction factor, indicating the ratio of fan cooling time to natural cooling time at a certain frequency when the same heat load is completely eliminated under the same local environment. ; This indicates the minimum operating frequency of each cooling tower's fan under minimum load. This represents the real-time heat dissipation of the condenser calculated in step 102. Indicates the minimum heat dissipation load of the condenser. Indicates the maximum heat dissipation load of the condenser. This indicates the actual current outlet temperature of the cooling water, calculated in step 102. This indicates the current target outlet temperature of the cooling water calculated in step 102. This represents the outdoor wet-bulb temperature collected in step 101. Indicates the number of adjustments.

[0035] Optionally, the preset temperature threshold in this application can be set according to requirements, and in this embodiment it can be set to 0.2℃.

[0036] Number of adjustments The initial value is set to 0. If the temperature deviation is greater than 0.2℃, then... The number of adjustments is incremented by 1 each time, and then the target operating frequency of each fan in the cooling tower is calculated using a dedicated mathematical model when all cooling towers are in operation.

[0037] In one embodiment, such as Figure 3 As shown, after detecting whether the temperature deviation value is greater than the preset temperature threshold, it may also include: If the temperature deviation is less than or equal to the preset temperature threshold, the fan will operate at the target operating frequency of each tower fan.

[0038] In one embodiment, such as Figure 3 As shown, if the temperature deviation value is greater than the preset temperature threshold, then according to... After calculating the target operating frequency of each tower fan, drive all the fans of the cooling tower to operate at the target operating frequency, and start the frequency change timer at the same time. After the frequency change timer has run for a preset time, it jumps to the step of detecting whether the temperature deviation value is greater than the preset temperature threshold and executes subsequent steps until the temperature deviation value is less than or equal to 0.2℃. Then, the frequency correction loop stops and the currently calculated target operating frequency is used as the final operating frequency.

[0039] For example, the preset time can be set according to needs; for instance, the preset time can be 3 minutes.

[0040] In one embodiment, during the calculation and execution of the target operating frequency, if the local correction coefficient is... When the value is 1, it means that natural heat dissipation can completely eliminate the heat loss from the condenser side under the current environment. In this case, there is no need to turn on the cooling tower fans; all cooling tower fans can be turned off directly, and the condenser can dissipate heat by relying on natural evaporation. That is, when When the value is 1, the cooling tower fan is turned off.

[0041] In one embodiment, a frequency adaptive adjustment mechanism is established to update and execute the target operating frequency in real time according to the changes in the operating parameters of the cooling water system, thereby achieving precise control of the chiller inlet water temperature.

[0042] In this embodiment, by establishing a frequency adaptive adjustment mechanism, real-time response to changes in the operating conditions of the cooling water system is achieved. Based on the dynamic changes in operating parameters, the target operating frequency of each cooling tower fan is updated and executed in real time, ensuring that the chiller inlet water temperature is always within a precisely controlled range. This effectively offsets the impact of load fluctuations, environmental changes, equipment status changes, and other factors on the cooling water temperature, ensuring that the chiller unit operates under optimal water temperature conditions.

[0043] The frequency adaptive adjustment mechanism uses the operating parameters of the cooling water system collected in step 101 as the monitoring object, and continuously captures the dynamic changes of parameters during the system operation process. When any parameter of the operating parameters, such as condenser heat dissipation, outdoor dry bulb temperature, outdoor wet bulb temperature, cooling water temperature, cooling water flow rate, local correction coefficient, and equipment aging coefficient, is detected to change, the mechanism immediately triggers the adaptive adjustment process and automatically repeats all the calculation and judgment processes of the aforementioned steps 102 to 103.

[0044] During repeated execution, the updated operating parameters are used as the new calculation basis to recalculate the cooling water temperature deviation value and recalculate the real-time heat dissipation of the condenser based on the updated condenser heat dissipation. Then, with the updated temperature deviation value and the real-time heat dissipation of the condenser as the core input, the target operating frequency of each tower fan is recalculated and updated according to the threshold judgment, formula calculation, frequency correction loop and other logic in step 103, to ensure that the target operating frequency is highly compatible with the actual operating conditions of the current system.

[0045] After updating the target operating frequency, the frequency adaptive adjustment mechanism directly drives all the fans in the cooling tower to immediately execute the updated target operating frequency, achieving uninterrupted adaptive adjustment of the fan frequency. Through this cyclical parameter monitoring-calculation update-frequency execution process, the cooling capacity of the cooling tower is always matched with the actual needs of the cooling water system, continuously controlling the fluctuation of the chiller inlet water temperature within the set threshold ±0.2℃ range. Ultimately, this achieves precise and stable control of the chiller inlet water temperature, while ensuring that the cooling tower fans always operate in a low-energy consumption range, balancing water temperature control accuracy and system energy efficiency.

[0046] Furthermore, if a local correction factor occurs during the entire frequency adaptive adjustment process... In condition 1, the special operating condition control logic will still be followed, directly shutting down the cooling tower fan and relying on natural evaporation to complete the condenser heat dissipation. The cooling will resume once relevant operating parameters change and... If the value is not 1, restart the above adaptive adjustment process, calculate and execute the corresponding target operating frequency.

[0047] This invention provides a method for adjusting the inlet water temperature of a high-efficiency computer room chiller. By collecting real-time operating parameters of the high-efficiency computer room cooling water system, it provides complete and accurate real-time data support for subsequent calculations of water temperature deviation, heat dissipation, and fan frequency adjustment. This ensures the scientific nature of chiller inlet water temperature adjustment from the source and retains data for strategy optimization. Based on the operating parameters, the cooling water temperature deviation and condenser real-time heat dissipation are calculated, providing a clear basis for judging fan frequency adjustment and core input parameters that fit the actual load, eliminating detection and calculation errors, and making subsequent frequency adjustment more targeted. The system calculates the real-time heat dissipation of the condenser and the target operating frequency of each tower fan when all cooling towers are running. This allows for precise matching of the actual system conditions, controlling the chiller inlet water temperature within the set range, ensuring efficient and stable chiller operation, and accurately controlling the chiller inlet water temperature. By fully utilizing the advantage of all cooling towers running, the system rationally adjusts the cooling tower fan frequency and increases the heat exchange area, allowing the fans to operate at low frequencies. This significantly reduces cooling tower power consumption and improves the overall energy efficiency of the computer room. It solves problems such as poor chiller inlet water temperature control, high cooling tower fan energy consumption, and poor adaptability to complex operating conditions under existing comfort air conditioning high-efficiency computer room control strategies.

[0048] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0049] The following are device embodiments of the present invention. For details not described in detail, please refer to the corresponding method embodiments described above.

[0050] Figure 4 The diagram shows a schematic of a high-efficiency chiller inlet water temperature regulating device according to an embodiment of the present invention. For ease of explanation, only the parts related to the embodiment of the present invention are shown, and are described in detail below: like Figure 4 As shown, the device for regulating the inlet water temperature of the high-efficiency computer room chiller includes: a data acquisition module 41 and a calculation module 42.

[0051] The acquisition module 41 is used to acquire the operating parameters of the high-efficiency computer room cooling water system in real time. Calculation module 42 is used to calculate the cooling water temperature deviation and the real-time heat dissipation of the condenser based on the operating parameters; The calculation module 42 is also used to calculate the target operating frequency of each tower fan when all cooling towers are running, based on the temperature deviation value and the real-time heat dissipation of the condenser.

[0052] In one possible implementation, the operating parameters include: cooling tower outlet water temperature, outdoor dry bulb temperature, and outdoor wet bulb temperature; Calculation module 42, based on operating parameters, calculates the cooling water temperature deviation and the real-time heat dissipation of the condenser, and uses it for: Based on the outdoor wet-bulb temperature and preset control logic, the current target temperature of the cooling water outlet is determined; The current actual outlet temperature of the cooling water is determined based on the average of the outlet temperatures of all cooling towers. The absolute value of the difference between the current target temperature of the cooling water outlet and the current actual temperature of the cooling water outlet is taken as the cooling water temperature deviation value.

[0053] In one possible implementation, the operating parameters also include: cooling tower inlet water temperature, cooling water flow rate, and condenser heat dissipation; When the calculation module 42 calculates the real-time heat dissipation of the condenser based on the operating parameters, it is used for: Calculate the temperature difference between the inlet water temperature and the outlet water temperature of each cooling tower. Calculate the product of the temperature difference and the cooling water flow rate; The sum of the products corresponding to all cooling towers is taken as the total heat dissipation of the current system condenser; The average of the total heat dissipation and the sum of the condenser heat dissipation is taken as the current real-time heat dissipation of the condenser.

[0054] In one possible implementation, the calculation module 42, based on the temperature deviation value and the real-time heat dissipation of the condenser, calculates the target operating frequency of each tower fan when all cooling towers are running, for the following purposes: Check whether the temperature deviation value is greater than the preset temperature threshold; If the temperature deviation is greater than the preset temperature threshold, then... After updating the number of adjustments, according to Calculate the target operating frequency of each tower fan; in, This indicates the operating frequency of each cooling tower's fan under the current load and current outlet water temperature. Indicates the equipment aging factor. This represents the local correction factor. This indicates the minimum operating frequency of each cooling tower's fan under minimum load. This indicates the current real-time heat dissipation of the condenser. Indicates the minimum heat dissipation load of the condenser. Indicates the maximum heat dissipation load of the condenser. This indicates the current actual outlet temperature of the cooling water. This indicates the current target outlet temperature of the cooling water. Indicates the outdoor wet-bulb temperature. Indicates the number of adjustments.

[0055] In one possible implementation, after detecting whether the temperature deviation value is greater than a preset temperature threshold, the calculation module 42 is further used for: If the temperature deviation is less than or equal to the preset temperature threshold, the fan will operate at the target operating frequency of each tower fan.

[0056] In one possible implementation, if the temperature deviation value is greater than a preset temperature threshold, then according to After calculating the target operating frequency of each tower fan, the calculation module 42 is also used for: After the frequency change timer has run for a preset time, it jumps to the step of detecting whether the temperature deviation value is greater than the preset temperature threshold and executes subsequent steps.

[0057] In one possible implementation, such as Figure 5 As shown, it also includes: control module 43; Control module 43, used for: when When the value is 1, the cooling tower fan is turned off, and the condenser dissipates heat by relying on natural evaporation.

[0058] The above embodiments provide a device for regulating the inlet water temperature of a high-efficiency computer room chiller. A data acquisition module collects real-time operating parameters of the high-efficiency computer room cooling water system, providing complete and accurate real-time data support for subsequent calculations of water temperature deviation, heat dissipation, and fan frequency adjustment. This ensures the scientific nature of chiller inlet water temperature regulation from the source and retains data for strategy optimization. Based on the operating parameters, the calculation module calculates the cooling water temperature deviation and the real-time heat dissipation of the condenser, providing a clear basis for judging fan frequency adjustment and core input parameters that closely match the actual load, eliminating detection and calculation errors and making subsequent frequency adjustment more targeted. Based on the temperature deviation value... Based on the real-time heat dissipation of the condenser, the calculation module calculates the target operating frequency of each tower fan when all cooling towers are running, thereby accurately matching the actual operating conditions of the system and controlling the chiller inlet water temperature within the set range. This ensures efficient and stable operation of the chiller and precisely controls the chiller inlet water temperature. By fully utilizing the advantage of all cooling towers running, the frequency of the cooling tower fans is reasonably adjusted, while the heat exchange area is increased, allowing the fans to operate at a low frequency, significantly reducing the power consumption of the cooling towers and improving the overall energy efficiency of the computer room. This solves the problems of poor chiller inlet water temperature control, high energy consumption of cooling tower fans, and poor adaptability to complex operating conditions under the existing high-efficiency computer room control strategies for comfort air conditioning.

[0059] Figure 6 This is a schematic diagram of the device provided in an embodiment of the present invention. Figure 6 As shown, the device 6 in this embodiment includes a processor 60 and a memory 61. The memory 61 stores a computer program 62. When the processor 60 executes the computer program 62, it implements the steps in the various method embodiments described above. Alternatively, when the processor 60 executes the computer program 62, it implements the functions of each module / unit in the various device embodiments described above.

[0060] For example, computer program 62 may be divided into one or more modules / units, which are stored in memory 61 and executed by processor 60 to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of computer program 62 in device 6.

[0061] Device 6 may include, but is not limited to, processor 60 and memory 61. Those skilled in the art will understand that... Figure 6 This is merely an example of device 6 and does not constitute a limitation on device 6. It may include more or fewer components than shown, or combine certain components, or different components. For example, device 6 may also include input / output devices, network access devices, buses, etc.

[0062] The processor 60 can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0063] The memory 61 can be an internal storage unit of the device 6, such as a hard disk or RAM of the device 6. The memory 61 can also be an external storage device of the device 6, such as a plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card, or Flash Card equipped on the device 6. Furthermore, the memory 61 can include both internal storage units and external storage devices of the device 6. The memory 61 is used to store the computer program 62 and other programs and data required by the device 6. The memory 61 can also be used to temporarily store data that has been output or will be output.

[0064] For the sake of simplicity and clarity, only the above-described functional modules / units are used as examples. In practical applications, the functions described above can be assigned to different functional modules / units as needed. These modules / units can be implemented in hardware, software, or a combination of both.

[0065] This invention also provides a computer-readable medium storing a computer program. When the computer program is executed by a processor, it implements the methods described in the above-described method embodiments.

[0066] This invention also provides a computer program product, including a computer program. When the computer program is executed by a processor, it implements the methods described in the above-described method embodiments.

[0067] Computer programs include computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. Computer-readable media can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc.

[0068] In the above embodiments, the descriptions of each embodiment have their own emphasis. Parts not detailed or described in a particular embodiment can be referred to in the relevant descriptions of other embodiments. Unless otherwise specified or in conflict with logic, the terminology and / or descriptions between different embodiments are consistent and can be referenced interchangeably. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A method for adjusting the inlet water temperature of a high-efficiency computer room chiller, characterized in that, include: Real-time acquisition of operating parameters of high-efficiency computer room cooling water systems; Based on the operating parameters, the cooling water temperature deviation and the real-time heat dissipation of the condenser are calculated. Based on the temperature deviation value and the real-time heat dissipation of the condenser, the target operating frequency of each tower fan is calculated when all cooling towers are running.

2. The method for adjusting the inlet water temperature of the high-efficiency computer room chiller according to claim 1, characterized in that, The operating parameters include: cooling tower outlet water temperature and outdoor wet-bulb temperature; Based on the aforementioned operating parameters, the cooling water temperature deviation and the real-time heat dissipation of the condenser are calculated, including: Based on the outdoor wet-bulb temperature and the preset control logic, the current target temperature of the cooling water outlet is determined; The current actual cooling water outlet temperature is determined based on the average of all the cooling tower outlet temperatures. The absolute value of the difference between the current target temperature of the cooling water outlet and the current actual temperature of the cooling water outlet is taken as the cooling water temperature deviation value.

3. The method for adjusting the inlet water temperature of the high-efficiency computer room chiller according to claim 2, characterized in that, The operating parameters also include: cooling tower inlet water temperature, cooling water flow rate, and condenser heat dissipation; Based on the aforementioned operating parameters, the real-time heat dissipation of the condenser is calculated, including: Calculate the temperature difference between the inlet water temperature and the outlet water temperature of each cooling tower. Calculate the product of the temperature difference and the cooling water flow rate; The sum of the products corresponding to all cooling towers is taken as the total heat dissipation of the current system condenser; The average of the total heat dissipation and the sum of the condenser heat dissipation is taken as the current real-time heat dissipation of the condenser.

4. The method for adjusting the inlet water temperature of the high-efficiency computer room chiller according to claim 3, characterized in that, Based on the temperature deviation value and the real-time heat dissipation of the condenser, the target operating frequency of each tower fan is calculated when all cooling towers are running, including: Detect whether the temperature deviation value is greater than a preset temperature threshold; If the temperature deviation value is greater than the preset temperature threshold, then... After updating the number of adjustments, according to Calculate the target operating frequency of each tower fan; in, This indicates the operating frequency of each cooling tower's fan under the current load and current outlet water temperature. Indicates the equipment aging factor. This represents the local correction factor. This indicates the minimum operating frequency of each cooling tower's fan under minimum load. This indicates the current real-time heat dissipation of the condenser. Indicates the minimum heat dissipation load of the condenser. Indicates the maximum heat dissipation load of the condenser. This indicates the current actual outlet temperature of the cooling water. This indicates the current target outlet temperature of the cooling water. This indicates the outdoor wet-bulb temperature. Indicates the number of adjustments.

5. The method for adjusting the inlet water temperature of the high-efficiency computer room chiller according to claim 4, characterized in that, After detecting whether the temperature deviation value is greater than a preset temperature threshold, the method further includes: If the temperature deviation value is less than or equal to the preset temperature threshold, then the fan will operate at the target operating frequency of each tower fan.

6. The method for adjusting the inlet water temperature of the high-efficiency computer room chiller according to claim 5, characterized in that, If the temperature deviation value is greater than the preset temperature threshold, then according to After calculating the target operating frequency of each tower fan, the following is also included: After the frequency change timer has run for a preset time, the process jumps to the step of detecting whether the temperature deviation value is greater than the preset temperature threshold and then proceeds to the next step.

7. The method for adjusting the inlet water temperature of a high-efficiency chiller in a computer room according to any one of claims 4-6, characterized in that, Also includes: when When the value is 1, the cooling tower fan is turned off, and the condenser dissipates heat by relying on natural evaporation.

8. A high-efficiency device for regulating the inlet water temperature of a computer room chiller, characterized in that, include: The data acquisition module is used to collect the operating parameters of the high-efficiency computer room cooling water system in real time. The calculation module is used to calculate the cooling water temperature deviation and the real-time heat dissipation of the condenser based on the operating parameters. The calculation module is also used to calculate the target operating frequency of each tower fan when all cooling towers are running, based on the temperature deviation value and the real-time heat dissipation of the condenser.

9. A device, characterized in that, It includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method as described in any one of claims 1 to 7.

10. A computer-readable medium, characterized in that, The computer-readable medium stores a computer program that, when executed by a processor, implements the method as described in any one of claims 1 to 7.

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