Outlet water temperature adjusting method and device of cooling tower and nonvolatile storage medium

Abstract

The invention discloses an outlet water temperature adjusting method and device of a cooling tower and a nonvolatile storage medium. The method comprises the following steps: acquiring a target parameter set of a plurality of cooling tower devices; determining the average operation frequency of the cooling tower according to the target parameter set; comparing the average operation frequency of the cooling tower with a product of a preset cooling tower fan full-load operation frequency, a product of a preset cooling tower fan high-efficiency operation frequency lower limit and a product of the preset cooling tower fan full-load operation frequency to obtain a comparison result; and based on the comparison result, an initial outlet water temperature strategy corresponding to the target cooling tower equipment is adjusted, an adjusted outlet water temperature strategy is obtained, and the adjusted outlet water temperature strategy is applied to the target cooling tower equipment. The technical problems that a cooling tower system usually adopts a fixed water outlet temperature set value, so that energy is wasted, and the running efficiency of cooling tower equipment is low are solved.

Description

Technical Field

[0001] This application relates to the field of communication power energy conservation, and in particular, to a method, device, and non-volatile storage medium for adjusting the outlet water temperature of a cooling tower. Background Art

[0002] As a key device for the refrigeration heat source in a large central air-conditioning system, the main function of a cooling tower is to discharge the heat generated by equipment or buildings into the environment. Its performance directly affects the energy efficiency and operating cost of the entire refrigeration system. The outlet water temperature of the cooling tower has a great influence on the operating efficiency of the refrigeration host. On the premise that the outlet water temperature is not lower than the minimum temperature for the safe operation of the refrigeration machine, generally, the lower the outlet water temperature of the cooling tower, the higher the energy efficiency ratio of the refrigeration machine; conversely, the higher the outlet water temperature of the cooling tower, the lower the energy efficiency ratio of the refrigeration machine.

[0003] In the related art, the cooling tower system usually adopts a fixed outlet water temperature set value. Although this method is simple and direct, environmental factors such as temperature and humidity vary greatly in different seasons and at different times. The fixed outlet water temperature set value is difficult to meet the optimal operating requirements under different working conditions. At the same time, to ensure that the cooling demand can be met under the most unfavorable conditions, the outlet water temperature is usually set relatively low, which causes unnecessary energy consumption in most cases. The cooling tower equipment needs to operate under high load and low efficiency, and cannot achieve potential energy-saving optimization. It lacks an intelligent adjustment function and cannot dynamically optimize operating parameters to improve energy efficiency, resulting in energy waste and low efficiency.

[0004] In view of the above problems, no effective solution has been proposed yet. Summary of the Invention

[0005] Embodiments of this application provide a method, device, and non-volatile storage medium for adjusting the outlet water temperature of a cooling tower, so as to at least solve the technical problems that the cooling tower system usually adopts a fixed outlet water temperature set value, resulting in energy waste and low operating efficiency of the cooling tower equipment.

[0006] According to one aspect of the embodiments of this application, a method for adjusting the outlet water temperature of a cooling tower is provided, including: obtaining a target parameter set of multiple cooling tower devices, where the target parameter set includes the switch state of the cooling tower fan, the frequency of the cooling tower fan, the outlet water temperature of the cooling tower cooling water, and the outdoor wet bulb temperature; determining the average operating frequency of the cooling tower based on the target parameter set; comparing the average operating frequency of the cooling tower with the product of the preset full-load operating frequency of the cooling tower fan, the lower limit of the preset high-efficiency operating frequency of the cooling tower fan, and the preset full-load operating frequency of the cooling tower fan respectively to obtain a comparison result; based on the comparison result, adjusting the initial outlet water temperature strategy corresponding to the target cooling tower device to obtain an adjusted outlet water temperature strategy, and applying the adjusted outlet water temperature strategy to the target cooling tower device.

[0007] In some embodiments of the present application, determining the average operating frequency of the cooling tower according to the target parameter set includes: obtaining the switch states and frequencies of the cooling tower fans of multiple cooling tower devices in the target parameter set, and determining the total number of cooling tower devices; determining the average operating frequency of the cooling tower based on the switch states of the cooling tower fans, the frequencies of the cooling tower fans, and the total number of cooling tower devices.

[0008] In some embodiments of the present application, comparing the average operating frequency of the cooling tower with the product of the preset full-load operating frequency of the cooling tower fan, the lower limit of the preset efficient operating frequency of the cooling tower fan, and the preset full-load operating frequency of the cooling tower fan respectively to obtain a comparison result, including: determining the product of the preset full-load operating frequency of the cooling tower fan and the lower limit of the preset efficient operating frequency of the cooling tower fan as the first comparison parameter; obtaining a first comparison result when the average operating frequency of the cooling tower is less than the first comparison parameter, where the first comparison result is used to indicate that the preset cooling water outlet temperature in the initial outlet water temperature strategy is high, resulting in the cooling tower device operating at a low frequency; obtaining a second comparison result when the average operating frequency of the cooling tower is not less than the preset full-load operating frequency of the cooling tower fan, where the second comparison result is used to indicate that the preset cooling water outlet temperature in the initial outlet water temperature strategy is low, resulting in the cooling tower device operating at a low frequency; obtaining a third comparison result when the average operating frequency of the cooling tower is not less than the first comparison parameter and less than the preset full-load operating frequency of the cooling tower fan, where the third comparison result is used to indicate that the cooling tower device is operating efficiently at the preset cooling water outlet temperature in the initial outlet water temperature strategy.

[0009] In some embodiments of the present application, based on the comparison result, adjusting the initial outlet water temperature strategy of the target cooling tower device to obtain an adjusted outlet water temperature strategy, including: when the comparison result is the first comparison result, adjusting the preset cooling water outlet temperature in the initial outlet water temperature strategy according to the first preset adjustment step to obtain the adjusted outlet water temperature strategy, where the first preset adjustment step is the standard adjustment step of the preset cooling water outlet temperature.

[0010] In some embodiments of the present application, based on the comparison result, the initial water outlet temperature strategy of the target cooling tower equipment is adjusted to obtain the adjusted water outlet temperature strategy, including: in the case where the comparison result is the second comparison result, obtaining the cooling tower cooling water outlet temperature and the cooling tower fan switch state of multiple cooling tower equipment in the target parameter set; determining the lowest value of the cooling tower water outlet temperature value according to the cooling tower cooling water outlet temperature and the cooling tower fan switch state; adjusting the preset cooling tower cooling water outlet temperature in the initial water outlet temperature strategy according to the lowest value of the cooling tower water outlet temperature value and the second preset adjustment step length to obtain the adjusted water outlet temperature strategy, where the second preset adjustment step length is the energy-saving adjustment step length of the preset cooling tower cooling water outlet temperature.

[0011] In some embodiments of the present application, based on the comparison result, the initial water outlet temperature strategy of the target cooling tower equipment is adjusted to obtain the adjusted water outlet temperature strategy, including: in the case where the comparison result is the third comparison result, determining the preset cooling tower cooling water outlet temperature in the initial water outlet temperature strategy as the preset cooling tower cooling water outlet temperature in the adjusted water outlet temperature strategy, and determining the lower limit of the cooling tower cooling water outlet temperature based on the outdoor wet bulb temperature and the preset main engine chilled water supply temperature in the target parameter set to obtain the adjusted water outlet temperature strategy.

[0012] In some embodiments of the present application, the method further includes: obtaining the actual water outlet temperature of the target cooling tower equipment at preset time intervals; comparing the actual water outlet temperature with the preset cooling tower cooling water outlet temperature in the adjusted water outlet temperature strategy to obtain a fourth comparison result, where the fourth comparison result is used to indicate the accuracy of the adjusted water outlet temperature strategy.

[0013] According to another aspect of the embodiments of the present application, there is also provided a device for adjusting the water outlet temperature of a cooling tower, including: an acquisition module, configured to acquire a target parameter set of multiple cooling tower equipment, where the target parameter set includes the cooling tower fan switch state, the cooling tower fan frequency, the cooling tower cooling water outlet temperature, and the outdoor wet bulb temperature; a determination module, configured to determine the average operating frequency of the cooling tower according to the target parameter set; a comparison module, configured to compare the average operating frequency of the cooling tower with the preset full-load operating frequency of the cooling tower fan, the lower limit of the preset high-efficiency operating frequency of the cooling tower fan, and the product of the preset full-load operating frequency of the cooling tower fan respectively to obtain a comparison result; an adjustment module, configured to adjust the initial water outlet temperature strategy corresponding to the target cooling tower equipment based on the comparison result to obtain the adjusted water outlet temperature strategy, and apply the adjusted water outlet temperature strategy to the target cooling tower equipment.

[0014] According to another aspect of the embodiments of the present application, there is also provided a non-volatile storage medium, where a program is stored in the non-volatile storage medium, and when the program runs, it controls the device where the non-volatile storage medium is located to execute the above method for adjusting the water outlet temperature of the cooling tower.

[0015] According to another aspect of the embodiments of the present application, an electronic device is further provided, including: a memory and a processor, where the processor is configured to run a program stored in the memory, and when the program runs, it executes the above-mentioned method for adjusting the outlet water temperature of the cooling tower.

[0016] According to another aspect of the embodiments of the present application, a computer program product is further provided, including computer instructions, and when the computer instructions are executed by a processor, the above-mentioned method for adjusting the outlet water temperature of the cooling tower is implemented.

[0017] In the embodiments of the present application, a target parameter set of multiple cooling tower devices is acquired, where the target parameter set includes the switch state of the cooling tower fan, the frequency of the cooling tower fan, the outlet water temperature of the cooling tower cooling water, and the outdoor wet bulb temperature; the average operating frequency of the cooling tower is determined based on the target parameter set; the average operating frequency of the cooling tower is respectively compared with the product of the preset full-load operating frequency of the cooling tower fan, the lower limit of the preset efficient operating frequency of the cooling tower fan, and the preset full-load operating frequency of the cooling tower fan to obtain a comparison result; based on the comparison result, the initial outlet water temperature strategy corresponding to the target cooling tower device is adjusted to obtain an adjusted outlet water temperature strategy, and the adjusted outlet water temperature strategy is applied to the target cooling tower device. By determining the adjusted outlet water temperature strategy of the target cooling tower device and applying the adjusted outlet water temperature strategy to the target cooling tower device, the purpose of targeted adjustment of the outlet water temperature is achieved, avoiding waste of energy, and further solving the technical problems of energy waste and low operating efficiency of cooling tower devices caused by the usually fixed set value of the outlet water temperature in the cooling tower system. Description of the Drawings

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0019] Figure 1 is a hardware structure block diagram of a computer terminal for implementing the method for adjusting the outlet water temperature of a cooling tower according to an embodiment of the present application;

[0020] Figure 2 is a flowchart of a method for adjusting the outlet water temperature of a cooling tower according to an embodiment of the present application;

[0021] Figure 3 is a data comparison diagram according to an embodiment of the present application;

[0022] Figure 4 is a flowchart of another method for adjusting the outlet water temperature of a cooling tower according to an embodiment of the present application;

[0023] Figure 5 It is a schematic structural diagram of a device for adjusting the outlet water temperature of a cooling tower provided according to an embodiment of the present application. Specific embodiments

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0025] The information collected in the embodiments of the present application is information and data authorized by the user or fully authorized by all parties. Moreover, the processing of relevant data, such as collection, storage, use, processing, transmission, provision, disclosure, and application, complies with the relevant laws, regulations, and standards in the relevant regions, takes necessary confidentiality measures, does not violate public order and good customs, and provides corresponding operation entrances for users to choose to authorize or reject the results of automated decision-making. If the user chooses to reject, the expert decision-making process will be entered.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0027] To better understand the embodiments of the present application, the technical terms involved in the embodiments of the present application are explained as follows:

[0028] Frequency converter: A power electronic device that adjusts the speed of an AC motor by changing the supply frequency of the motor.

[0029] Cooling fan: A device mainly used to lower the ambient or equipment temperature. In industrial production, it is often used to cool machines to ensure that they operate within an appropriate temperature range, thereby ensuring equipment performance and extending service life.

[0030] Temperature transmitter: A device that converts the weak signals generated by temperature sensors (such as thermocouples and thermal resistors) into standardized output signals (such as 4 - 20 mA, 0 - 10 V, etc.), facilitating remote monitoring and data processing.

[0031] Cooling water: In a central air - conditioning system, the central chilled - water system is usually divided into a primary - side system and a secondary - side system. The primary - side system is mainly responsible for heat exchange and the circulation of cooling water inside the chilled - water station. The role of cooling water in the primary - side system is that it is pumped from the cooling tower or cooling equipment to the condenser of the chiller, where it absorbs the heat released by the refrigerant, and then is sent back to the cooling tower for cooling and recycled. Through the cooling of the cooling tower, the water temperature drops, and the cooling water can be circulated back to the condenser of the chiller again to continue absorbing heat, thus realizing the continuous operation of the refrigeration system and the cooling of equipment.

[0032] In the related art, the cooling - tower system usually adopts a fixed set value of the outlet water temperature. Although this method is simple and direct, environmental factors such as temperature and humidity vary greatly in different seasons and different time periods. The fixed set value of the outlet water temperature is difficult to meet the optimal operation requirements under different working conditions. At the same time, to ensure that the cooling demand can be met under the most adverse conditions, the outlet water temperature is usually set relatively low, which causes unnecessary energy consumption in most cases. The cooling - tower equipment needs to operate under high load and low efficiency, unable to achieve potential energy - saving optimization, lacking an intelligent adjustment function, unable to dynamically optimize operation parameters to improve energy efficiency, resulting in energy waste and low efficiency. Therefore, there is a technical problem that the cooling - tower system usually adopts a fixed set value of the outlet water temperature, leading to energy waste and low operating efficiency of the cooling - tower equipment. To solve this problem, relevant solutions are provided in the embodiments of this application, which will be described in detail below.

[0033] According to the embodiments of this application, an embodiment of a method for adjusting the outlet water temperature of a cooling tower is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer - executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0034] The method embodiments provided by the embodiments of this application can be executed in a computer terminal or a similar computing device. Figure 1 A hardware structure block diagram of a computer terminal for implementing the method for adjusting the outlet water temperature of a cooling tower is shown. As Figure 1As shown, the computer terminal 10 may include one or more processors 102 (shown as 102a, 102b, ……, 102n in the figure) (the processor 102 may include, but is not limited to, processing devices such as a microprocessor MCU or a field programmable gate array FPGA), a memory 104 for storing data, and a transmission device 106 for communication functions. In addition, it may further include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the BUS bus), a network interface, a power supply, and / or a camera. Those of ordinary skill in the art can understand that Figure 1 the structure shown is only schematic and does not limit the structure of the above electronic device. For example, the computer terminal 10 may further include more or fewer components than those Figure 1 shown in the figure, or have a different configuration from that Figure 1 shown in the figure.

[0035] It should be noted that the above one or more processors 102 and / or other data processing circuits are generally referred to as "data processing circuits" herein. The data processing circuit may be embodied in whole or in part as software, hardware, firmware, or any combination thereof. In addition, the data processing circuit may be a single independent processing module, or be incorporated in whole or in part into any one of other elements in the computer terminal 10. As involved in the embodiments of the present application, the data processing circuit is a kind of processor control (such as the selection of a variable resistor terminal path connected to an interface).

[0036] The memory 104 can be used to store software programs and modules of application software, such as the program instructions / data storage device corresponding to the method for adjusting the outlet water temperature of the cooling tower in the embodiments of the present application. The processor 102 executes various functional applications and data processing by running the software programs and modules stored in the memory 104, that is, implements the above method for adjusting the outlet water temperature of the cooling tower. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, a flash memory, or other non-volatile solid-state memories. In some instances, the memory 104 may further include a memory remotely set relative to the processor 102, and these remote memories may be connected to the computer terminal 10 through a network. Examples of the above network include, but are not limited to, the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0037] The transmission device 106 is used to receive or send data via a network. Specific examples of the above network may include a wireless network provided by the communication provider of the computer terminal 10. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a Radio Frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0038] The display can be, for example, a touch-screen liquid crystal display (LCD), which enables the user to interact with the user interface of the computer terminal 10.

[0039] Under the above operating environment, the embodiments of the present application provide an embodiment of a method for adjusting the outlet water temperature of a cooling tower. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0040] As Figure 2 shown, it is a flowchart of a method for adjusting the outlet water temperature of a cooling tower provided by an embodiment of the present application, including:

[0041] Step S202, obtaining a target parameter set of multiple cooling tower devices.

[0042] In the technical solution provided in step S202, the target parameter set includes the cooling tower fan switch state, the cooling tower fan frequency, the cooling tower cooling water outlet temperature, the outdoor wet bulb temperature, and so on.

[0043] In some embodiments of the present application:

[0044] Collect the target parameter sets of multiple cooling tower devices within a preset time period (for example, collect data for each minute within 1 hour at a rate of one minute). The target parameter sets include the cooling tower fan switch state (also known as the cooling tower fan switch state feedback value), the cooling tower fan frequency (also known as the cooling tower fan frequency feedback value), the cooling water outlet temperature of the cooling tower (also known as the cooling tower outlet temperature feedback value), the outdoor wet bulb temperature, and so on. The cooling tower fan switch state indicates whether the fan of the cooling tower device is currently running. The switch state is usually represented by a logical value (0 or 1), where 0 represents the fan is off (or not running), and 1 represents the fan is on (running). By monitoring the switch state of the fan, the operating state of the cooling tower and the number of fans participating in the cooling water circulation can be understood. The cooling tower fan frequency refers to the running speed of the cooling tower device fan, usually measured in Hertz (Hz). In a cooling tower system using variable frequency technology, the fan frequency is adjustable and directly affects the cooling efficiency of the cooling tower. The cooling water outlet temperature of the cooling tower refers to the temperature of the cooling water output by the cooling tower device and is an important indicator to measure the operating performance of the cooling tower. The lower the outlet temperature, the better the cooling effect of the cooling tower and the more beneficial it is to the operation of subsequent cooling equipment (such as chillers). However, too low an outlet temperature may increase the energy consumption of the cooling tower system, so it is necessary to find the optimal outlet temperature through dynamic adjustment. The outdoor wet bulb temperature is an indicator reflecting air humidity and temperature and is usually used to represent the cooling potential of the air. It is lower than the dry bulb temperature (the temperature measured by an ordinary thermometer), and when the air humidity is low, the difference between the wet bulb temperature and the dry bulb temperature is large. In the operation of the cooling tower system, the outdoor wet bulb temperature is an important reference for determining the lower limit of the cooling tower outlet temperature because the cooling capacity of the cooling tower is limited by the air wet bulb temperature. Here, the outdoor wet bulb temperature is the average value within a preset time (for example, the average of the outdoor wet bulb temperature in the past 15 minutes). After obtaining the above data, perform data preprocessing, delete abnormal data, and perform interpolation filling for missing data.

[0045] For example, taking a cold station of a certain project as an example, the data collected for the target parameter sets of multi-tower cooling tower devices include: the cooling tower fan switch state (also known as the cooling tower fan switch state feedback value): (0, 0, 1, 1, 1, 1, 1, 1); the cooling tower fan frequency (also known as the cooling tower fan frequency feedback value): (1.5, 2.2, 40.3, 40.2, 40.5, 40.6, 40.8, 40.5); the cooling water outlet temperature of the cooling tower (also known as the cooling tower outlet temperature feedback value): (29.3, 29.5, 28.1, 28.4, 28.3, 28.5, 28.6, 28.5), the set value of the cooling water outlet temperature of the cooling tower is 27.5, and the outdoor wet bulb temperature. The average of the outdoor wet bulb temperature for each minute in the past 15 minutes is used as the outdoor wet bulb temperature, and the outdoor wet bulb temperature is 24.5°C.

[0046] Step S204: Determine the average operating frequency of the cooling tower according to the target parameter set.

[0047] In the technical solution provided in step S204, there are various ways to determine the average operating frequency of the cooling tower according to the target parameter set. For example: Obtain the cooling tower fan switch status and cooling tower fan frequency of multiple cooling tower devices in the target parameter set, and determine the total number of cooling tower devices; Determine the average operating frequency of the cooling tower according to the cooling tower fan switch status, cooling tower fan frequency, and the total number of cooling tower devices.

[0048] In some embodiments of the present application:

[0049] Obtain the cooling tower fan switch status and cooling tower fan frequency of multiple cooling tower devices in the target parameter set, and at the same time determine the total number of cooling tower devices. Determine the average operating frequency of the cooling tower based on the functional relationship among the cooling tower fan switch status, cooling tower fan frequency, and the total number of cooling tower devices. The average operating frequency of the cooling tower is the average value of the operating frequencies of all the cooling tower device fans that are running within a preset time period. It is a key indicator used to measure the overall operating efficiency and status of the cooling tower system. For example, the functional relationship among the cooling tower fan switch status, cooling tower fan frequency, and the total number of cooling tower devices can be expressed by the following formula:

[0050] Fa = (TOF1 * F1 + TOF2 * F2 … + TOFn * Fn) ÷ n,

[0051] where Fa represents the average operating frequency of the cooling tower, TOF1 to TOFn represent the cooling tower fan switch status of the 1st to nth cooling tower devices, F1 to Fn represent the cooling tower fan frequencies of the 1st to nth cooling tower devices, and n represents the total number of cooling tower devices.

[0052] For the example of a certain project's chilled water station above, the cooling tower fan switch status (also known as the cooling tower fan switch status feedback value): (0, 0, 1, 1, 1, 1, 1, 1); the cooling tower fan frequency (also known as the cooling tower fan frequency feedback value): (1.5, 2.2, 40.3, 40.2, 40.5, 40.6, 40.8, 40.5). Calculate the average operating frequency of the cooling tower = (0 * 1.5 + 0 * 2.2 + 1 * 40.3 + 1 * 40.2 + 1 * 40.5 + 1 * 40.6 + 1 * 40.8 + 1 * 40.5) / 6 = 40.48.

[0053] Step S206: Compare the average operating frequency of the cooling tower with the product of the preset full-load operating frequency of the cooling tower fan, the lower limit of the preset high-efficiency operating frequency of the cooling tower fan, and the preset full-load operating frequency of the cooling tower fan respectively to obtain a comparison result.

[0054] In the technical solution provided in step S206, comparing the average operating frequency of the cooling tower with the product of the preset full-load operating frequency of the cooling tower fan, the lower limit of the preset high-efficiency operating frequency of the cooling tower fan, and the preset full-load operating frequency of the cooling tower fan, the comparison result can be achieved in various ways. For example, determining the product of the preset full-load operating frequency of the cooling tower fan and the lower limit of the preset high-efficiency operating frequency of the cooling tower fan as the first comparison parameter; when the average operating frequency of the cooling tower is less than the first comparison parameter, obtaining a first comparison result, where the first comparison result is used to indicate that the preset cooling water outlet temperature in the initial outlet temperature strategy is high, resulting in the cooling tower equipment operating at a low frequency; when the average operating frequency of the cooling tower is not less than the preset full-load operating frequency of the cooling tower fan, obtaining a second comparison result, where the second comparison result is used to indicate that the preset cooling water outlet temperature in the initial outlet temperature strategy is low, resulting in the cooling tower equipment operating at a low frequency; when the average operating frequency of the cooling tower is not less than the first comparison parameter and less than the preset full-load operating frequency of the cooling tower fan, obtaining a third comparison result, where the third comparison result is used to indicate that the cooling tower equipment is operating at a high efficiency at the preset cooling water outlet temperature in the initial outlet temperature strategy.

[0055] In some embodiments of the present application:

[0056] The control logic of the variable-frequency control system of the cooling tower fan in the cold station group control system is as follows: The frequency converter can utilize the built-in proportional-integral-derivative controller (PID) function to form a closed-loop control with temperature as the control object. The role of the cooling tower equipment fan is to reduce the outlet temperature to a certain value, and its cooling effect can be adjusted by the speed adjustment of the frequency converter. The difference between the controlled variable (the cooling water outlet temperature of the cooling tower, that is, the outlet water temperature of the above-mentioned cooling tower) and the set value (that is, the preset cooling water outlet temperature in the initial outlet temperature strategy) passes through the PID controller built in the frequency converter, and then sends out a speed command to control the output of the frequency converter frequency, and finally adjusts the rotation speed of the cooling tower fan. The equipment required for the control system: frequency converter, cooling fan, temperature collector, temperature transmitter. Its control principle is as follows:

[0057] The data of the temperature collector is transmitted to the frequency converter interface through a temperature transmitter; PID regulation is performed based on the detected temperature data and the set target temperature value; when the detected temperature is lower than the target set temperature, the output speed of the frequency converter decreases, and the cooling effect of the cooling fan is reduced. When the speed is adjusted to the lower limit of the speed, it can enter the shutdown and sleep state; when the detected temperature is higher than the target set temperature, the output speed of the frequency converter increases, and the cooling effect of the cooling fan is improved until the detected temperature is consistent with the target temperature, and then the speed is maintained (the adjustment range can reach the upper limit of the motor allowable speed); when the detected temperature is consistent with the target temperature, the existing speed is maintained for cooling, and the target temperature of the cooling water outlet is usually the temperature of the cooling water flowing into the tower at the outlet end of each cooling tower. In a stable outdoor environment, the feedback value of the cooling water outlet temperature of the cooling tower equipment decreases significantly as the frequency of the cooling tower fan increases. When the frequency of the cooling tower fan reaches a certain frequency, the feedback value of the cooling water outlet temperature of the cooling tower cannot continue to decrease or the decrease amplitude is not obvious. At this time, this frequency is the efficient operation frequency of the cooling tower fan. If the fan still operates at the highest frequency, the feedback value of the cooling water outlet temperature of the cooling tower has approached the limit of the wet bulb temperature. At this time, the feedback value of the cooling water outlet temperature of the cooling tower cannot further decrease as the frequency of the cooling tower fan increases, resulting in the cooling tower fan running excessively and doing useless work.

[0058] To determine whether the preset cooling tower cooling water outlet temperature in the initial outlet temperature strategy is appropriate based on the operating state of the current cooling tower equipment and the operating frequency of the cooling tower fan, the average operating frequency of the cooling tower is compared with the product of the preset full-load operating frequency of the cooling tower fan, the lower limit of the preset efficient operating frequency of the cooling tower fan (also known as the lower limit of the percentage of the efficient operating frequency of the cooling tower fan, and the lower limit of the preset efficient operating frequency of the cooling tower fan is equal to the quotient of the efficient operating frequency of the cooling tower fan and the preset full-load operating frequency of the cooling tower fan) and the preset full-load operating frequency of the cooling tower fan:

[0059] The product of the preset full-load operating frequency of the cooling tower fan and the lower limit of the preset efficient operating frequency of the cooling tower fan is determined as the first comparison parameter (indicating the lowest boundary frequency at which the cooling tower equipment fan operates in an efficient range). When the average operating frequency of the cooling tower is less than the first comparison parameter, the first comparison result is obtained. The first comparison result is used to indicate that the preset cooling tower cooling water outlet temperature in the initial outlet temperature strategy is too high, resulting in the cooling tower equipment operating at a low frequency. Specifically: because the preset cooling tower cooling water outlet temperature is set too high, the cooling tower equipment operates at a low frequency. It is necessary to reduce the preset cooling tower cooling water outlet temperature, increase the operating frequency of the cooling tower fan, and thus improve the operating efficiency of the cooling tower equipment, so that the cooling tower equipment changes from a low-frequency operating state to an efficient operating state.

[0060] When the average operating frequency of the cooling tower is not less than the preset full-load operating frequency of the cooling tower fan, a second comparison result is obtained. The second comparison result is used to indicate that the preset cooling water outlet temperature in the initial water outlet temperature strategy is too low, resulting in the cooling tower equipment operating at a low frequency (when the cooling tower equipment fan (also known as the cooling tower fan) operates at a low frequency, it cannot achieve the best energy utilization efficiency, resulting in power consumption higher than the necessary level. In the long term, when operating at a low frequency, the cooling tower equipment fan increases wear due to unstable operating conditions, affecting the equipment life and maintenance cost). Specifically: The cooling tower equipment operates at a low frequency because the preset cooling water outlet temperature of the cooling tower is set too low. Specifically: Because the preset cooling water outlet temperature of the cooling tower is set too low, the cooling tower equipment operates at a low frequency. An excessively high average operating frequency of the cooling tower does not result in a lower cooling water outlet temperature. The cooling tower operates at a low frequency, causing waste of energy. It is necessary to increase the preset cooling water outlet temperature of the cooling tower, increase the operating frequency of the cooling tower fan, and thereby improve the operating efficiency of the cooling tower equipment, enabling the cooling tower equipment to switch from a low-frequency operating state to a high-efficiency operating state (when operating in the high-efficiency frequency range, the fan can achieve the lowest energy consumption while ensuring the cooling effect, achieving the purpose of energy conservation and emission reduction. Without increasing additional energy consumption, the best cooling capacity of the cooling tower can be achieved to meet the cooling demand).

[0061] When the average operating frequency of the cooling tower is not less than the first comparison parameter and less than the preset full-load operating frequency of the cooling tower fan, a third comparison result is obtained. The third comparison result is used to indicate that at the preset cooling water outlet temperature of the cooling tower in the initial water outlet temperature strategy, the cooling tower equipment is in a high-efficiency operating state, indicating that the setting of the preset cooling water outlet temperature is reasonable and does not require adjustment.

[0062] Step S208: Based on the comparison result, adjust the initial water outlet temperature strategy corresponding to the target cooling tower equipment to obtain the adjusted water outlet temperature strategy, and apply the adjusted water outlet temperature strategy to the target cooling tower equipment (the target cooling tower equipment is any one of multiple cooling tower equipment, and this method will ultimately determine the adjusted water outlet temperature strategy for each cooling tower equipment).

[0063] In the technical solution provided in step S208, based on the comparison result, adjusting the initial water outlet temperature strategy of the target cooling tower equipment to obtain the adjusted water outlet temperature strategy can be achieved in various ways:

[0064] When the comparison result is the first comparison result, adjust the preset cooling water outlet temperature in the initial water outlet temperature strategy according to the first preset adjustment step to obtain the adjusted water outlet temperature strategy, where the first preset adjustment step is the standard adjustment step of the preset cooling water outlet temperature of the cooling tower.

[0065] In the case where the comparison result is the second comparison result, obtain the cooling tower cooling water outlet temperature and the cooling tower fan switch state of multiple cooling tower devices in the target parameter set; determine the minimum value of the cooling tower outlet temperature value based on the cooling tower cooling water outlet temperature and the cooling tower fan switch state; adjust the preset cooling tower cooling water outlet temperature in the initial outlet temperature strategy according to the minimum value of the cooling tower outlet temperature value and the second preset adjustment step, and obtain the adjusted outlet temperature strategy, where the second preset adjustment step is the energy-saving adjustment step of the preset cooling tower cooling water outlet temperature.

[0066] In the case where the comparison result is the third comparison result, determine the preset cooling tower cooling water outlet temperature in the initial outlet temperature strategy as the preset cooling tower cooling water outlet temperature in the adjusted outlet temperature strategy, and determine the lower limit of the cooling tower cooling water outlet temperature based on the outdoor wet bulb temperature and the preset main engine chilled water supply temperature in the target parameter set, and obtain the adjusted outlet temperature strategy.

[0067] In some embodiments of the present application:

[0068] In the case where the comparison result is the first comparison result, adjust the preset cooling tower cooling water outlet temperature in the initial outlet temperature strategy according to the first preset adjustment step, and obtain the adjusted outlet temperature strategy. Specifically: the first preset adjustment step is the standard adjustment step of the preset cooling tower cooling water outlet temperature. The preset cooling tower cooling water outlet temperature in the adjusted outlet temperature strategy is equal to the difference between the preset cooling tower cooling water outlet temperature in the initial outlet temperature strategy and the first preset adjustment step. Determine the preset cooling tower cooling water outlet temperature in the adjusted outlet temperature strategy as the adjusted outlet temperature strategy. The first preset adjustment step refers to the preset basic change range used when adjusting the set value of the cooling water outlet temperature during the dynamic adjustment of the outlet water temperature of the cooling tower equipment, and is used to guide the adjustment range of the set value of the cooling water outlet temperature to adapt to different operating conditions and requirements.

[0069] In the case where the comparison result is the second comparison result, obtain the cooling tower cooling water outlet temperature and the cooling tower fan switch state of multiple cooling tower devices in the target parameter set; determine the minimum value of the cooling tower outlet temperature value based on the cooling tower cooling water outlet temperature and the cooling tower fan switch state. The minimum value of the cooling tower outlet temperature value is equal to the minimum value among the products of the cooling tower cooling water outlet temperature and the cooling tower fan switch state for all cooling tower devices. Adjust the preset cooling tower cooling water outlet temperature in the initial outlet temperature strategy according to the minimum value of the cooling tower outlet temperature value and the second preset adjustment step: the preset cooling tower cooling water outlet temperature in the adjusted outlet temperature strategy is equal to the sum of the minimum value of the cooling tower outlet temperature value and the second preset adjustment step. Determine the preset cooling tower cooling water outlet temperature in the adjusted outlet temperature strategy as the adjusted outlet temperature strategy. The second preset adjustment step is the energy-saving adjustment step for the preset cooling tower cooling water outlet temperature and is a key preset parameter for finely tuning the outlet temperature setting value to further optimize energy use and operating efficiency.

[0070] In the case where the comparison result is the third comparison result, determine the preset cooling tower cooling water outlet temperature in the initial outlet temperature strategy as the preset cooling tower cooling water outlet temperature in the adjusted outlet temperature strategy, and determine the lower limit of the cooling tower cooling water outlet temperature based on the outdoor wet bulb temperature and the preset chilled water supply temperature of the main unit in the target parameter set. The lower limit of the cooling tower cooling water outlet temperature = max(Tch, Twb + 1), where Tch represents the preset chilled water supply temperature of the main unit and Twb represents the outdoor wet bulb temperature. Determine the preset cooling tower cooling water outlet temperature in the adjusted outlet temperature strategy and the lower limit of the cooling tower cooling water outlet temperature as the adjusted outlet temperature strategy.

[0071] For the example of a certain project's chilled water station above, set the preset full-load operating frequency (Fh) of the cooling tower fan to 47 Hz, the lower limit (Pl) of the high-efficiency operating frequency of the cooling tower fan to 90%, and the first preset adjustment step (S1) to 0.5 °C. The average operating frequency (Fa) of the cooling tower (40.48) < Fh(47) * Pl(90%), then the preset cooling tower cooling water outlet temperature (Ts) in the adjusted outlet temperature strategy is equal to the preset cooling tower cooling water outlet temperature (Tc) in the initial outlet temperature strategy minus S1 = 27.5 - 0.5 = 27 °C.

[0072] To verify the accuracy of the adjusted outlet water temperature strategy and monitor the cooling tower equipment, ensure that the outlet water temperature of the cooling tower cooling water is the optimal set value, and enable the cooling tower to operate efficiently. After the adjusted outlet water temperature strategy is applied to the target cooling tower equipment, the actual outlet water temperature of the target cooling tower equipment is obtained at each preset time interval; the actual outlet water temperature is compared with the preset outlet water temperature of the cooling tower cooling water in the adjusted outlet water temperature strategy to obtain a fourth comparison result, where the fourth comparison result is used to indicate the accuracy of the adjusted outlet water temperature strategy.

[0073] The following are specific embodiments:

[0074] Obtain the actual outlet water temperature of the target cooling tower equipment at each preset time interval (per minute) (i.e., the actual outlet water temperature of the target cooling tower equipment in the past minute), and compare the actual outlet water temperature with the preset outlet water temperature of the cooling tower cooling water in the adjusted outlet water temperature strategy to obtain a fourth comparison result (for example, use the difference between the actual outlet water temperature and the preset outlet water temperature of the cooling tower cooling water in the adjusted outlet water temperature strategy as the fourth comparison result).

[0075] As Figure 3 shown, it is a data comparison diagram provided according to an embodiment of the present application, which actually refers to the actual outlet water temperature of the target cooling tower equipment, and the prediction refers to the preset outlet water temperature of the cooling tower cooling water in the adjusted outlet water temperature strategy. The abscissa represents the monitoring time, and the ordinate represents the temperature. It can be seen that the actual outlet water temperature of the target cooling tower equipment and the preset outlet water temperature of the cooling tower cooling water in the adjusted outlet water temperature strategy highly coincide.

[0076] The methods in the embodiments and implementation manners of the present application can dynamically adjust the outlet water temperature through real-time monitoring and adjustment, realize the intelligent and dynamic adjustment of the outlet water temperature of the cooling tower, and enable the cooling tower equipment to maintain the best operating state under different environmental conditions. Thus, while ensuring the cooling effect, the energy utilization efficiency is maximized, the operating energy consumption is reduced, and the energy-saving goal is achieved.

[0077] The embodiment of the present application also provides a flowchart of another method for adjusting the outlet water temperature of a cooling tower, as Figure 4As shown, first, parameters such as the feedback values of the cooling tower and the weather environment system settings are collected (i.e., the above-mentioned target parameter set of multiple cooling tower devices), and then the collected data is preprocessed. It is judged (if represents judgment) whether the current average cooling tower frequency (i.e., the above-mentioned average operating frequency of the cooling tower) is less than the product of the full-load frequency (i.e., the above-mentioned preset full-load operating frequency of the cooling tower fan) and the lower limit of the energy-saving operation percentage (i.e., the above-mentioned lower limit of the efficient operating frequency of the preset cooling tower fan). If the current average cooling tower frequency is less than the product of the full-load frequency and the lower limit of the energy-saving operation percentage, the cooling tower cooling water outlet temperature (i.e., the preset cooling tower cooling water outlet temperature in the above-mentioned adjusted water outlet temperature strategy) is sent = the difference between the cooling tower cooling water outlet temperature setting value (i.e., the preset cooling tower cooling water outlet temperature in the above-mentioned initial water outlet temperature strategy) and the standard adjustment step of the cooling tower cooling water outlet temperature (i.e., the above-mentioned first preset adjustment step).

[0078] When the current average cooling tower frequency is not less than the product of the full-load frequency and the lower limit of the energy-saving operation percentage, if the current average cooling tower frequency is greater than or equal to the full-load frequency, the cooling tower cooling water outlet temperature is sent = the sum of the lowest value of the cooling tower water outlet temperature feedback value and the standard energy-saving step of the cooling tower cooling water outlet temperature. If the current average cooling tower frequency is less than the full-load frequency but greater than or equal to the product of the full-load frequency and the lower limit of the energy-saving operation percentage, continuous detection is performed (corresponding to the above-mentioned third comparison result).

[0079] The embodiment of the present application also provides a structural schematic diagram of a cooling tower water outlet temperature adjustment device, as Figure 5 shown, including:

[0080] An acquisition module 502, configured to acquire a target parameter set of multiple cooling tower devices, where the target parameter set includes the cooling tower fan switch state, the cooling tower fan frequency, the cooling tower cooling water outlet temperature, and the outdoor wet bulb temperature.

[0081] A determination module 504, configured to determine the average operating frequency of the cooling tower according to the target parameter set.

[0082] A comparison module 606, configured to compare the average operating frequency of the cooling tower with the preset full-load operating frequency of the cooling tower fan, the lower limit of the preset efficient operating frequency of the cooling tower fan, and the product of the preset full-load operating frequency of the cooling tower fan respectively, to obtain a comparison result.

[0083] An adjustment module 508, configured to adjust the initial water outlet temperature strategy corresponding to the target cooling tower device based on the comparison result, obtain an adjusted water outlet temperature strategy, and apply the adjusted water outlet temperature strategy to the target cooling tower device.

[0084] It should be noted thatFigure 5 The outlet water temperature adjustment device of the cooling tower shown is used to execute Figure 2 the outlet water temperature adjustment method of the cooling tower shown. Therefore, Figure 2 the relevant explanations in the outlet water temperature adjustment method of the cooling tower in

[0085] also apply to the outlet water temperature adjustment device of this cooling tower and will not be elaborated here.

[0086] It should be noted that each module in the above-mentioned outlet water temperature adjustment device of the cooling tower can be a program module (for example, a set of program instructions that implement a specific function), or a hardware module. For the latter, it can be manifested in the following forms, but not limited to this: the manifestation form of each of the above modules is a processor, or the functions of each of the above modules are implemented by a processor.

[0087] The embodiments of the present application also provide a non-volatile storage medium. The non-volatile storage medium includes a stored program. Among them, when the program runs, it controls the device where the non-volatile storage medium is located to execute the above-mentioned outlet water temperature adjustment method of the cooling tower. For example, obtain the target parameter sets of multiple cooling tower devices, where the target parameter sets include the on / off state of the cooling tower fan, the cooling tower fan frequency, the outlet water temperature of the cooling tower cooling water, and the outdoor wet bulb temperature; determine the average operating frequency of the cooling tower according to the target parameter sets; compare the average operating frequency of the cooling tower with the product of the preset full-load operating frequency of the cooling tower fan, the lower limit of the preset high-efficiency operating frequency of the cooling tower fan, and the preset full-load operating frequency of the cooling tower fan respectively to obtain a comparison result; based on the comparison result, adjust the initial outlet water temperature strategy corresponding to the target cooling tower device to obtain an adjusted outlet water temperature strategy, and apply the adjusted outlet water temperature strategy to the target cooling tower device.

[0088] According to another aspect of the embodiments of the present application, there is also provided a computer program product, including a computer program which, when executed by a processor, implements the above-described method for adjusting the outlet water temperature of the cooling tower. For example, it is adopted to obtain the target parameter sets of multiple cooling tower devices, where the target parameter sets include the switch states of cooling tower fans, the frequencies of cooling tower fans, the outlet water temperatures of cooling tower cooling water, and the outdoor wet-bulb temperatures; determine the average operating frequency of the cooling tower according to the target parameter sets; compare the average operating frequency of the cooling tower with the product of the preset full-load operating frequency of the cooling tower fan, the lower limit of the preset efficient operating frequency of the cooling tower fan, and the preset full-load operating frequency of the cooling tower fan respectively to obtain a comparison result; based on the comparison result, adjust the initial outlet water temperature strategy corresponding to the target cooling tower device to obtain an adjusted outlet water temperature strategy, and apply the adjusted outlet water temperature strategy to the target cooling tower device.

[0089] In the above embodiments of the present application, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0090] In several embodiments provided by the present application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only illustrative. For example, the division of the units can be a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed with each other can be through some interfaces. The indirect couplings or communication connections of units or modules can be in electrical or other forms.

[0091] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0092] In addition, the functional units in the various embodiments of the present application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0093] When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the related technology, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, read-only memories (ROMs), random access memories (RAMs), mobile hard disks, magnetic disks, or optical discs.

[0094] The above are only the preferred embodiments of this application. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of this application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of this application.

Claims

1. A method for adjusting the outlet water temperature of a cooling tower, characterized in that, Including: Obtain a target parameter set of multiple cooling tower devices, where the target parameter set includes the cooling tower fan switch state, the cooling tower fan frequency, the cooling water outlet temperature of the cooling tower, and the outdoor wet bulb temperature; Determine the average operating frequency of the cooling tower according to the target parameter set; Compare the average operating frequency of the cooling tower with the product of the preset full-load operating frequency of the cooling tower fan, the lower limit of the preset efficient operating frequency of the cooling tower fan, and the preset full-load operating frequency of the cooling tower fan respectively to obtain a comparison result; Based on the comparison result, adjust the initial outlet water temperature strategy corresponding to the target cooling tower device to obtain an adjusted outlet water temperature strategy, and apply the adjusted outlet water temperature strategy to the target cooling tower device.

2. The method according to claim 1, wherein The determining the average operating frequency of the cooling tower according to the target parameter set includes: Obtain the cooling tower fan switch state and the cooling tower fan frequency of multiple cooling tower devices in the target parameter set, and determine the total number of cooling tower devices; Determine the average operating frequency of the cooling tower according to the cooling tower fan switch state, the cooling tower fan frequency, and the total number of cooling tower devices.

3. The method according to claim 1, wherein The comparing the average operating frequency of the cooling tower with the product of the preset full-load operating frequency of the cooling tower fan, the lower limit of the preset efficient operating frequency of the cooling tower fan, and the preset full-load operating frequency of the cooling tower fan respectively to obtain a comparison result includes: Determine the product of the preset full-load operating frequency of the cooling tower fan and the lower limit of the preset efficient operating frequency of the cooling tower fan as a first comparison parameter; When the average operating frequency of the cooling tower is less than the first comparison parameter, obtain a first comparison result, where the first comparison result is used to indicate that the preset cooling water outlet temperature in the initial outlet water temperature strategy is high, resulting in the cooling tower device being in a low-frequency operating state; When the average operating frequency of the cooling tower is not less than the preset full-load operating frequency of the cooling tower fan, obtain a second comparison result, where the second comparison result is used to indicate that the preset cooling water outlet temperature in the initial outlet water temperature strategy is low, resulting in the cooling tower device being in the low-frequency operating state; When the average operating frequency of the cooling tower is not less than the first comparison parameter and less than the preset full-load operating frequency of the cooling tower fan, obtain a third comparison result, where the third comparison result is used to indicate that the cooling tower device is in an efficient operating state at the preset cooling water outlet temperature in the initial outlet water temperature strategy.

4. The method according to claim 3, wherein The adjusting the initial outlet water temperature strategy of the target cooling tower device based on the comparison result to obtain an adjusted outlet water temperature strategy includes: When the comparison result is the first comparison result, adjust the preset cooling water outlet temperature in the initial outlet water temperature strategy according to a first preset adjustment step to obtain the adjusted outlet water temperature strategy, where the first preset adjustment step is the standard adjustment step of the preset cooling water outlet temperature of the cooling tower.

5. The method according to claim 3, characterized in that, Based on the comparison result, adjusting the initial water outlet temperature strategy of the target cooling tower equipment to obtain an adjusted water outlet temperature strategy, including: When the comparison result is the second comparison result, obtaining the cooling tower cooling water outlet temperature and the cooling tower fan switch state of multiple cooling tower equipment in the target parameter set; Determining the lowest value of the cooling tower water outlet temperature value according to the cooling tower cooling water outlet temperature and the cooling tower fan switch state; Adjusting the preset cooling tower cooling water outlet temperature in the initial water outlet temperature strategy according to the lowest value of the cooling tower water outlet temperature value and a second preset adjustment step to obtain the adjusted water outlet temperature strategy, where the second preset adjustment step is the energy-saving adjustment step of the preset cooling tower cooling water outlet temperature.

6. The method according to claim 3, wherein Based on the comparison result, adjusting the initial water outlet temperature strategy of the target cooling tower equipment to obtain an adjusted water outlet temperature strategy, including: When the comparison result is the third comparison result, determining the preset cooling tower cooling water outlet temperature in the initial water outlet temperature strategy as the preset cooling tower cooling water outlet temperature in the adjusted water outlet temperature strategy, and determining the lower limit of the cooling tower cooling water outlet temperature based on the outdoor wet bulb temperature and the preset main engine chilled water supply temperature in the target parameter set to obtain the adjusted water outlet temperature strategy.

7. The method according to claim 1, wherein The method further includes: Obtaining the actual water outlet temperature of the target cooling tower equipment at preset time intervals; Comparing the actual water outlet temperature with the preset cooling tower cooling water outlet temperature in the adjusted water outlet temperature strategy to obtain a fourth comparison result, where the fourth comparison result is used to indicate the accuracy of the adjusted water outlet temperature strategy.

8. An outlet water temperature adjusting device for a cooling tower, characterized in that, Including: An acquisition module, configured to acquire a target parameter set of multiple cooling tower equipment, where the target parameter set includes a cooling tower fan switch state, a cooling tower fan frequency, a cooling tower cooling water outlet temperature, and an outdoor wet bulb temperature; A determination module, configured to determine the average operating frequency of the cooling tower according to the target parameter set; A comparison module, configured to compare the average operating frequency of the cooling tower with a preset full-load operating frequency of the cooling tower fan, a lower limit of the preset efficient operating frequency of the cooling tower fan, and the product of the preset full-load operating frequency of the cooling tower fan respectively to obtain a comparison result; An adjustment module, configured to adjust the initial water outlet temperature strategy corresponding to the target cooling tower equipment based on the comparison result to obtain an adjusted water outlet temperature strategy, and apply the adjusted water outlet temperature strategy to the target cooling tower equipment.

9. A non-volatile storage medium, characterized in that, A program is stored in the non-volatile storage medium, and when the program runs, it controls the device where the non-volatile storage medium is located to execute the cooling tower water outlet temperature adjustment method according to any one of claims 1 to 7.

10. An electronic device, characterized in that, Including: A memory and a processor, where the processor is configured to run the program stored in the memory, and when the program runs, it executes the cooling tower water outlet temperature adjustment method according to any one of claims 1 to 7.

11. A computer program product, comprising computer instructions, characterized in that, When the computer instructions are executed by a processor, the method for adjusting the outlet water temperature of the cooling tower according to any one of claims 1 to 7 is implemented.

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