An energy-saving control method, device, equipment and medium of an air conditioning water system

Abstract

The application discloses an energy-saving control method, device and equipment of an air conditioner water system and a medium. The method comprises the following steps: determining the chilled water relative flow of an air conditioner terminal based on the current flow and the rated flow of the chilled water of the air conditioner terminal; determining a target to-be-controlled parameter based on the chilled water relative flow of the air conditioner terminal, a preset chilled water relative flow threshold value and current operation information of a to-be-controlled device, determining a target adjustment mode corresponding to the target to-be-controlled parameter; and adjusting and controlling the operation information of the target to-be-controlled device based on the target adjustment mode. The method solves the problems of low control precision, supply-demand mismatch, hydraulic imbalance, large flow and small temperature difference, insufficient dehumidification or excessive dehumidification and the like caused by the air conditioner water system controlling the water pump speed based on pressure, temperature and the like or manually setting the chilled water supply temperature, and realizes the effect of meeting the terminal demand, improving the operation condition of the air conditioner water system and maximizing the energy consumption of the water chiller unit and the water pump.

Description

Technical Field

[0001] This invention relates to the field of air conditioning control technology, and in particular to an energy-saving control method, device, equipment and medium for air conditioning water systems. Background Technology

[0002] Centralized air conditioning systems are designed for maximum load. However, due to variations in outdoor meteorological parameters and indoor air conditioning load, they often operate at partial load. Current control methods for air conditioning water systems primarily rely on adjusting the chilled water pump's operating frequency based on parameters such as temperature and pressure to regulate system water flow. The chiller unit's supply water temperature is typically set manually in advance using a fixed value or based on experience.

[0003] These control methods cannot accurately identify end-user demand, have insufficient control precision, and are prone to phenomena such as hydraulic imbalance, large flow rate with small temperature difference, insufficient or excessive dehumidification, resulting in energy waste. Summary of the Invention

[0004] This invention provides an energy-saving control method, device, equipment, and medium for an air conditioning water system, which achieves the technical effect of maximizing energy savings in the operation of chiller units and chilled water pumps while meeting the needs of air conditioning terminals, reducing energy waste, and improving the operation and control of the air conditioning water system, thereby improving the overall energy efficiency of the system.

[0005] According to one aspect of the present invention, an energy-saving control method for an air conditioning water system is provided, the method comprising:

[0006] The current flow rate of chilled water at each air conditioning terminal in the air conditioning water system is obtained; wherein, the air conditioning water system includes a device to be controlled, and the device to be controlled includes a chiller unit and a chilled water pump;

[0007] Based on the current flow rate and rated flow rate of the chilled water at the air conditioning terminal, determine the relative flow rate of the chilled water at the air conditioning terminal;

[0008] Based on the relative flow rate of chilled water at the air conditioning terminal, a preset relative flow rate threshold of chilled water, and the current operating information of the device to be controlled, a target controllable parameter is determined, and a target adjustment mode corresponding to the target controllable parameter is determined; the target controllable parameter includes the target controllable device.

[0009] The operating information of the target control device is regulated based on the target adjustment method.

[0010] According to another aspect of the present invention, an energy-saving control device for an air conditioning water system is provided, the device comprising:

[0011] A chilled water current flow acquisition module is used to acquire the current chilled water flow of each air conditioning terminal in the air conditioning water system; wherein, the air conditioning water system includes a device to be controlled, and the device to be controlled includes a chiller unit and a chilled water pump;

[0012] The chilled water relative flow rate determination module is used to determine the relative flow rate of the chilled water at the air conditioning terminal based on the current flow rate of the chilled water at the air conditioning terminal and the preset rated flow rate of the chilled water.

[0013] The adjustment mode determination module is used to determine the target control parameter based on the relative flow rate of chilled water at the air conditioning terminal, a preset relative flow rate threshold of chilled water, and the current operating information of the device to be controlled, and to determine the target adjustment mode corresponding to the target control parameter.

[0014] The control module is used to regulate the operating information of the target control device based on the target adjustment method.

[0015] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0016] At least one processor; and

[0017] A memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program that can be executed by the at least one processor, which is then executed by the at least one processor to enable the at least one processor to perform an energy-saving control method for an air conditioning water system according to any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions, the computer instructions being configured to cause a processor to execute and implement an energy-saving control method for an air conditioning water system as described in any embodiment of the present invention.

[0020] The technical solution of this invention obtains the current chilled water flow rate of each air conditioning terminal in the air conditioning water system, determines the relative chilled water flow rate of the air conditioning terminal based on the rated chilled water flow rate and the current chilled water flow rate of the air conditioning terminal, determines the target control device based on the relative chilled water flow rate of the air conditioning terminal, the preset relative chilled water flow rate threshold, and the current operating information of the device to be controlled, and determines the target adjustment mode corresponding to the target control device, and regulates the operating information of the target control device based on the target adjustment mode. This solves the problems of low control accuracy, supply and demand mismatch, hydraulic imbalance, large flow rate and small temperature difference, insufficient dehumidification or excessive dehumidification caused by the existing air conditioning water system using water pump speed control based on parameters such as pressure and temperature, or manually setting the chilled water supply temperature. It realizes on-demand cooling, meets the terminal demand, reduces energy waste, improves the operating condition of the air conditioning water system, and maximizes the energy consumption of chiller units and water pumps, thereby improving the overall operating energy efficiency of the system.

[0021] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0023] Figure 1 This is a flowchart of an energy-saving control method for an air conditioning water system according to Embodiment 1 of the present invention;

[0024] Figure 2 This is a schematic diagram of the air conditioning water system provided in Embodiment 2 of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of an energy-saving control device for an air conditioning water system according to Embodiment 3 of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of an electronic device that implements an energy-saving control method for an air conditioning water system according to an embodiment of the present invention. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] Example 1

[0030] Figure 1 This is a flowchart of an energy-saving control method for an air conditioning water system according to Embodiment 1 of the present invention. This embodiment is applicable to the control of air conditioning systems. The method can be executed by an energy-saving control device for the air conditioning water system, which can be implemented in hardware and / or software. Figure 1 As shown, the method includes:

[0031] S110. Obtain the current chilled water flow rate of each air conditioning terminal in the air conditioning water system.

[0032] A complete air conditioning water system includes at least one air conditioning terminal and a device to be controlled, which includes a chiller and a chilled water pump.

[0033] It should be noted that multiple air conditioning terminals can be managed in an air conditioning water system. In order to achieve energy saving and consumption reduction, the current flow rate of chilled water in all air conditioning terminals can be monitored to identify the load demand of the air conditioning terminals. This allows for the regulation of various controllable devices in the air conditioning water system (such as chilled water pumps, chiller units, etc.) and adjustment of their operating information, thereby achieving on-demand cooling.

[0034] In practical applications, each air conditioning terminal is equipped with an electrically controlled regulating valve for flow control and measurement. For example, the chilled water flow rate at the air conditioning terminal can be measured based on the electrically controlled regulating valve. The system acquires the current chilled water flow rate of the air conditioning terminal collected by each electrically controlled regulating valve in real time or periodically. For instance, the current chilled water flow rate of each air conditioning terminal is acquired periodically at a certain time step (e.g., 15 minutes) (e.g., directly collected and fed back by the electrically controlled regulating valve at the air conditioning terminal).

[0035] S120. Based on the current chilled water flow rate of the air conditioning terminal and the preset rated chilled water flow rate, determine the relative chilled water flow rate of the air conditioning terminal.

[0036] In this embodiment, the rated flow rate of chilled water can be determined based on information such as the environmental information supplied by the air conditioning terminal, the performance parameters of the air conditioning terminal itself, and / or the control parameters controlling the air conditioning terminal. Alternatively, it can be manually set according to the load demand of the terminal. Or, during the process of monitoring the current flow rate of chilled water and adjusting the device to be controlled, the rated flow rate of chilled water can be corrected based on the original setting of the rated flow rate of chilled water according to the adjustment situation, thereby updating the rated flow rate of chilled water of the air conditioning terminal.

[0037] Optionally, the relative flow rate of chilled water at the air conditioning terminal is determined based on the current flow rate of chilled water at the air conditioning terminal and the preset rated flow rate of chilled water, including: performing ratio processing on the current flow rate of chilled water at the air conditioning terminal and the preset rated flow rate of chilled water to obtain the relative flow rate of chilled water at the air conditioning terminal.

[0038] In this embodiment, the method for determining the relative chilled water flow rate of each air conditioning terminal is the same. The determination of the relative chilled water flow rate of any one of the air conditioning terminals can be used as an example. For instance, the ratio of the current chilled water flow rate of the air conditioning terminal to its rated chilled water flow rate can be calculated, and this ratio can be used as the relative chilled water flow rate of that air conditioning terminal. Accordingly, the relative chilled water flow rate of each air conditioning terminal can be obtained.

[0039] S130. Based on the relative flow rate of chilled water at the air conditioning terminal, the preset relative flow rate threshold of chilled water, and the current operating information of the device to be controlled, determine the target control parameter and determine the target adjustment mode corresponding to the target control parameter. The target control parameter includes the target control device.

[0040] The current operating information can correspond to the control information of the device to be controlled, such as water supply temperature and operating frequency.

[0041] In practical applications, the relative flow rate of chilled water at each air conditioning terminal can be compared with a preset relative flow rate threshold. Based on the comparison results, the load demand of the air conditioning terminal and the matching status of supply and demand can be identified. For example, if the relative flow rate of chilled water is less than the preset relative flow rate threshold, it can be considered that the supply exceeds the demand of the air conditioning terminal. During this process, the current operating information of the device to be controlled (such as the current supply water temperature of the chiller unit, the current operating frequency of the chilled water pump, etc.) can be obtained. Then, based on the comparison results and the current operating information of the device to be controlled, the device that needs information regulation (i.e., the target device to be controlled) can be determined, as well as the target adjustment method for information regulation of the target device to be controlled (i.e., the target control parameter).

[0042] In this embodiment, the number of preset relative flow rate thresholds for chilled water can be multiple. Optionally, the preset relative flow rate thresholds for chilled water include a first relative flow rate threshold, such as 70%. Based on the relative flow rate of chilled water at the air conditioning terminal, the preset relative flow rate thresholds for chilled water, and the current operating information of the device to be controlled, a target controllable parameter is determined, and a target adjustment method corresponding to the target controllable parameter is determined, including: when it is detected that the relative flow rate of chilled water at all air conditioning terminals is less than the first relative flow rate threshold, and the current operating information of the chiller unit is lower than the first supply water temperature, the target controllable device in the target controllable parameter is determined to be the chiller unit; wherein, the current operating information includes the current supply water temperature; and the target adjustment method corresponding to the chiller unit is determined to be a temperature rise adjustment method.

[0043] The current operating information of the chiller unit includes the current water supply temperature.

[0044] In practical applications, the relative flow rate of chilled water at all air conditioning terminals can be compared with the first relative flow rate threshold. If it is detected that the relative flow rate of chilled water at all air conditioning terminals is less than the first relative flow rate threshold, and the water supply temperature of the chiller unit is lower than the first water supply temperature, then the chiller unit can be used as the target control device. The target adjustment method for controlling the chiller unit is confirmed to be the temperature rise adjustment method. The water supply temperature of the chiller unit can be increased by adjusting the temperature rise adjustment method, thereby improving the operating efficiency of the chiller unit, reducing supply, and saving energy.

[0045] In this embodiment, based on the relative flow rate of chilled water at the air conditioning terminal, a preset relative flow rate threshold for chilled water, and the current operating information of the device to be controlled, a target controllable parameter is determined, and a target adjustment mode corresponding to the target controllable parameter is determined. This includes: when it is detected that the relative flow rate of chilled water at all air conditioning terminals is less than the first relative flow rate threshold, and the current supply water temperature of the chiller unit is at the first supply water temperature, and the current operating information of the chilled water pump is higher than the first operating frequency, the target controllable device in the target controllable parameter is determined to be the chilled water pump; wherein, the current operating information includes the current operating frequency; and the target adjustment mode corresponding to the chilled water pump is determined to be the frequency reduction adjustment mode.

[0046] In practical applications, if it is detected that the relative flow rate of chilled water at all air conditioning terminals is less than the first relative flow rate threshold, and the water supply temperature of the chiller unit is at the first water supply temperature, and the operating frequency of the chilled water pump is higher than the first operating frequency, then the chilled water pump can be used as the target control device. The target adjustment method for controlling the chilled water pump can be the frequency reduction adjustment method, so as to reduce the operating frequency of the chilled water pump, thereby reducing the chilled water flow rate at the air conditioning terminals, reducing the supply, and saving energy.

[0047] In this embodiment, the preset relative flow rate threshold for chilled water also includes a second relative flow rate threshold, which is greater than the first relative flow rate threshold. For example, the first relative flow rate threshold is 70%, and the second relative flow rate threshold is 90%. Based on the relative flow rate of chilled water at the air conditioning terminal, the preset relative flow rate threshold for chilled water, and the current operating information of the device to be controlled, a target controllable parameter is determined, and a target adjustment mode corresponding to the target controllable parameter is determined. This includes: when the relative flow rate of chilled water at any air conditioning terminal is detected to be greater than the second relative flow rate threshold, and the current operating frequency of the chilled water pump is lower than the second operating frequency, the target controllable device in the target controllable parameter is determined to be the chilled water pump; and the target adjustment mode corresponding to the chilled water pump is determined to be a frequency increase adjustment mode.

[0048] The operating frequency of the chilled water pump includes a first operating frequency and a second operating frequency; the second operating frequency is greater than the first operating frequency, the first operating frequency can be a set minimum frequency, and the second operating frequency can be a set maximum frequency.

[0049] In practical applications, if the relative flow rate of chilled water at any air conditioning terminal is detected to be greater than the second relative flow rate threshold, and the operating frequency of the chilled water pump is lower than the second operating frequency, then the chilled water pump can be used as the target control device. The target adjustment method for controlling the chilled water pump can be frequency increase adjustment, so as to increase the operating frequency of the chilled water pump and increase the supply to meet the load demand of the air conditioning terminal.

[0050] In this embodiment, the preset relative flow rate threshold for chilled water also includes a third relative flow rate threshold, which is greater than the second relative flow rate threshold. For example, the second relative flow rate threshold is 90%, and the third relative flow rate threshold is 100%. Based on the relative flow rate of chilled water at the air conditioning terminal, the preset relative flow rate threshold for chilled water, and the current operating information of the device to be controlled, a target controllable parameter is determined, and a target adjustment mode corresponding to the target controllable parameter is determined. This includes: when it is detected that the relative flow rate of chilled water at any air conditioning terminal is greater than the second relative flow rate threshold and less than the third relative flow rate threshold, and the current operating frequency of the chilled water pump is at the second operating frequency, and the current supply water temperature of the chiller unit is higher than the second supply water temperature, the target controllable device in the target controllable parameter is determined to be the chiller unit; the second supply water temperature is lower than the first supply water temperature; the target adjustment mode corresponding to the chiller unit is determined to be a cooling adjustment mode; and the target adjustment mode corresponding to the chiller unit is determined to be a cooling adjustment mode.

[0051] In practical applications, if the relative flow rate of chilled water at any air conditioning terminal is detected to be greater than the second relative flow rate threshold and less than the third relative flow rate threshold, and the operating frequency of the chilled water pump is at the second operating frequency, and the supply water temperature of the chiller unit is higher than the second supply water temperature, then the chiller unit can be used as the target control device. The target regulation method for controlling the chiller unit can be determined to be the cooling regulation method, so as to reduce the supply water temperature of the chiller unit through the cooling regulation method, thereby increasing the supply and meeting the load demand of the air conditioning terminal.

[0052] In this embodiment, based on the relative flow rate of chilled water at the air conditioning terminal, a preset relative flow rate threshold for chilled water, and the current operating information of the device to be controlled, a target controllable parameter is determined, and a target adjustment mode corresponding to the target controllable parameter is determined. This includes: when the relative flow rate of chilled water at any air conditioning terminal reaches a third relative flow rate threshold, and the environmental information of the environment to which the air conditioning terminal belongs is greater than a preset environmental threshold corresponding to the environmental information, and the current water supply temperature of the chiller unit is higher than the second water supply temperature, the target controllable device in the target controllable parameter is determined to be the chiller unit; and the target adjustment mode corresponding to the chiller unit is determined to be a cooling adjustment mode.

[0053] The environmental information includes ambient temperature or ambient humidity.

[0054] In practical applications, if the relative flow rate of chilled water at any air conditioning terminal reaches the third relative flow rate threshold, and the ambient temperature of the environment surrounding the air conditioning terminal is higher than the preset ambient temperature, and the chiller's supply water temperature is higher than the second supply water temperature, then the chiller can be used as the target control device, and the target regulation method for controlling the chiller can be determined as a cooling regulation method. Alternatively, if the relative flow rate of chilled water at any air conditioning terminal reaches the third relative flow rate threshold, and the relative humidity of the environment surrounding the air conditioning terminal is higher than the preset relative humidity, and the chiller's supply water temperature is higher than the second supply water temperature, then the chiller can be used as the target control device, and the target regulation method for controlling the chiller can be determined as a cooling regulation method. This cooling regulation method lowers the chiller's supply water temperature to meet the comfort or process requirements of the environment surrounding the air conditioning terminal.

[0055] S130. Adjust the operating information of the target control device based on the target adjustment method.

[0056] In this embodiment, during the regulation of the chiller unit's operating information based on the temperature increase regulation method, the chiller unit's supply water temperature can be increased according to a preset temperature increase method. For example, the supply water temperature can be increased by one level (e.g., each level is 0.5℃ apart), or a preset temperature can be added to the original supply water temperature to control the supply water temperature. During the regulation of the chiller unit's operating information based on the temperature decrease regulation method, the chiller unit's supply water temperature can be decreased according to a preset temperature decrease method, such as decreasing the supply water temperature by one level. During the regulation of the chilled water pump's operating information based on the frequency decrease regulation method, the chilled water pump's operating frequency can be lowered according to a preset frequency decrease method until the operating frequency reaches the set minimum frequency. For example, the operating frequency can be lowered by one level (e.g., each level is 3Hz apart). During the regulation of the chilled water pump's operating information based on the frequency increase regulation method, the chilled water pump's operating frequency can be increased according to a preset frequency increase method until the operating frequency reaches the set maximum frequency. The advantage of this setup is that it can accurately identify the load demand of the air conditioning terminals based on changes in the relative flow rate of chilled water, and dynamically adjust the water supply temperature of the chiller unit or the operating frequency of the chilled water pump, thereby achieving the technical effects of on-demand cooling and energy-saving operation.

[0057] The technical solution of this embodiment obtains the current flow rate of chilled water at the air conditioning terminal, determines the relative flow rate of chilled water at the air conditioning terminal based on the rated flow rate and the current flow rate of chilled water at the air conditioning terminal, determines the target device to be controlled based on the relative flow rate of chilled water at the air conditioning terminal, a preset relative flow rate threshold of chilled water, and the current operating information of the device to be controlled, and determines the target adjustment mode corresponding to the target device to be controlled; and regulates the operating information of the target device to be controlled based on the target adjustment mode. This solves the problems of low control accuracy, supply and demand mismatch, hydraulic imbalance, large flow rate and small temperature difference, insufficient dehumidification or excessive dehumidification caused by the existing air conditioning water system using water pump speed control based on parameters such as pressure and temperature, or manually setting the chilled water supply temperature. It achieves the effect of maximizing energy savings of chiller units and water pumps while meeting the terminal demand and improving the operating condition of the air conditioning water system.

[0058] Example 2

[0059] As an optional embodiment of the above embodiments, specific application scenario examples are provided to enable those skilled in the art to further understand the technical solutions of the embodiments of the present invention. Specifically, please refer to the following detailed content.

[0060] See Figure 2 Assume a chilled water system manages five air conditioning terminals, each equipped with an electrically operated regulating valve that provides flow control and measurement. In practical applications, the current chilled water flow rate of all terminals can be acquired at specific time steps (this can be directly collected and fed back by the electrically operated regulating valves). Based on the current chilled water flow rate of each terminal and its rated chilled water flow rate, the relative chilled water flow rate of each terminal can be calculated. The chiller supply water temperature and chilled water pump operating frequency can be dynamically adjusted according to changes in the relative chilled water flow rate, achieving on-demand cooling and energy-saving operation.

[0061] In this embodiment, the energy-saving control of the air conditioning water system can be implemented in at least one of the following ways:

[0062] One implementation method is: if the relative flow rate of chilled water at all air conditioning terminals is detected to be less than the first relative flow rate threshold (e.g., 70%), and the chiller supply water temperature is lower than the first supply water temperature (i.e., the preset upper limit supply water temperature), the chiller supply water temperature is increased.

[0063] Another implementation method is: if the relative flow rate of chilled water at all air conditioning terminals is less than the first relative flow rate threshold, the chiller supply water temperature is at the first supply water temperature, and the chilled water pump operating frequency is higher than the first operating frequency, reduce the chilled water pump operating frequency.

[0064] Another implementation method is to increase the chilled water pump operating frequency when the relative flow rate of chilled water at any air conditioning terminal is detected to be greater than the second relative flow rate threshold (e.g., 90%) and the operating frequency of the chilled water pump is lower than the second operating frequency.

[0065] Another implementation method is: when the relative flow rate of chilled water at any air conditioning terminal is detected to be greater than the second relative flow rate threshold, and the chilled water pump is operating at the second operating frequency, and the chiller supply water temperature is higher than the second supply water temperature, the chiller supply water temperature is reduced.

[0066] Another implementation method is to reduce the chiller supply temperature when the relative flow rate of chilled water at any air conditioning terminal reaches the third relative flow rate threshold (e.g., 100%), and the indoor relative humidity or temperature of the environment where the air conditioning terminal is located is higher than the set value, and the chiller supply water temperature is higher than the second supply water temperature.

[0067] It should be noted that if the relative flow rate of chilled water at the air conditioning terminal, the preset relative flow rate threshold of chilled water, and the current operating information of the device to be controlled do not meet all the above detection conditions, it can be said that the air conditioning water system is in a state of supply and demand balance, and the device to be controlled can be operated normally.

[0068] The technical solution provided in this embodiment accurately identifies the cooling demand of the air conditioning terminals by monitoring the chilled water flow rate in real time. Based on the terminal demand, it automatically adjusts the chiller unit's supply water temperature and the chilled water pump's operating frequency. Through coordinated control of quality and quantity regulation, it achieves on-demand cooling, improving the unit's operating efficiency and reducing pump energy consumption while meeting indoor comfort requirements, thus maximizing energy savings. This effectively solves problems in existing technologies, such as low control accuracy, supply-demand mismatch, hydraulic imbalance, large flow rate with small temperature difference, insufficient or excessive dehumidification, and issues arising from pump speed control based on parameters like pressure and temperature, or manual setting of the chilled water supply temperature. This reduces energy waste.

[0069] Example 3

[0070] Figure 3 This is a schematic diagram of the structure of an energy-saving control device for an air conditioning water system according to Embodiment 3 of the present invention. Figure 3 As shown, the air conditioning water system includes at least one air conditioning terminal and at least one device to be controlled. The device includes: a chilled water current flow acquisition module 310, a chilled water relative flow determination module 320, an adjustment mode determination module 330, and a control module 340.

[0071] The system includes a chilled water current flow acquisition module 310, used to acquire the current chilled water flow of each air conditioning terminal in the air conditioning water system; wherein the air conditioning water system includes a device to be controlled, the device to be controlled includes a chiller unit and a chilled water pump; a chilled water relative flow determination module 320, used to determine the relative flow of chilled water at the air conditioning terminal based on the current chilled water flow of the air conditioning terminal and a preset rated chilled water flow; an adjustment mode determination module 330, used to determine a target control parameter based on the relative flow of chilled water at the air conditioning terminal, a preset relative flow threshold of chilled water, and the current operating information of the device to be controlled, and to determine a target adjustment mode corresponding to the target control parameter; and a control module 340, used to regulate the operating information of the target control device based on the target adjustment mode.

[0072] The technical solution of this embodiment obtains the current flow rate of chilled water at the air conditioning terminal, determines the relative flow rate of chilled water at the air conditioning terminal based on the rated flow rate and current residual chilled water at the air conditioning terminal, determines the target device to be controlled based on the relative flow rate of chilled water at the air conditioning terminal, the preset relative flow rate threshold of chilled water, and the current operating information of the device to be controlled, and determines the target adjustment mode corresponding to the target device to be controlled; and regulates the operating information of the target device to be controlled based on the target adjustment mode. This solves the problems of low control accuracy, supply and demand mismatch, hydraulic imbalance, large flow rate and small temperature difference, insufficient dehumidification or excessive dehumidification caused by the existing air conditioning water system controlling the pump speed according to parameters such as pressure and temperature, or manually setting the chilled water supply temperature. It achieves the effect of maximizing the saving of energy consumption of chiller units and water pumps while meeting the terminal demand and improving the operating status of the air conditioning water system.

[0073] Based on the above-mentioned device, optionally, the chilled water relative flow rate determination module 320 is specifically used to perform ratio processing on the current flow rate of chilled water at the air conditioning terminal and the preset rated flow rate of chilled water to obtain the relative flow rate of chilled water at the air conditioning terminal.

[0074] Based on the above-mentioned device, optionally, the relative flow rate threshold of chilled water includes a first relative flow rate threshold, and the adjustment mode determination module 330 includes a parameter determination first unit and a temperature rise adjustment mode determination unit.

[0075] The parameter determination first unit is used to determine the target controllable device in the target controllable parameters as the chiller unit when it is detected that the relative flow rate of chilled water in all the air conditioning terminals is less than the first relative flow rate threshold, and the current operating information of the chiller unit is lower than the first supply water temperature; wherein, the current operating information includes the current supply water temperature;

[0076] The temperature rise regulation mode determination unit is used to determine the target regulation mode corresponding to the chiller unit as the temperature rise regulation mode.

[0077] Based on the above-mentioned device, optionally, the adjustment mode determination module 330 includes a parameter determination second unit and a frequency reduction adjustment mode determination unit.

[0078] The parameter determination second unit is used to determine the target controllable device in the target controllable parameters as the chilled water pump when the relative flow rate of chilled water in all the air conditioning terminals is less than the first relative flow rate threshold, the current supply water temperature of the chiller unit is at the first supply water temperature, and the current operating information of the chilled water pump is higher than the first operating frequency; wherein, the current operating information includes the current operating frequency;

[0079] The frequency reduction regulation mode determination unit is used to determine that the target regulation mode corresponding to the chilled water pump is the frequency reduction regulation mode.

[0080] Based on the above device, optionally, the preset relative flow rate threshold of chilled water includes a second relative flow rate threshold, the second relative flow rate threshold being greater than the first relative flow rate threshold, and the adjustment mode determination module 330 includes a parameter determination third unit and a frequency increase adjustment mode determination unit.

[0081] The parameter determination third unit is used to determine the target controllable device in the target controllable parameters as the chilled water pump when the relative flow rate of chilled water at any of the air conditioning terminals is greater than the second relative flow rate threshold and the current operating frequency of the chilled water pump is lower than the second operating frequency; wherein, the second operating frequency is greater than the first operating frequency;

[0082] The frequency increase regulation mode determination unit is used to determine that the target regulation mode corresponding to the chilled water pump is the frequency increase regulation mode.

[0083] Based on the above-mentioned device, optionally, the relative flow rate threshold of chilled water includes a third relative flow rate threshold, which is greater than the second relative flow rate threshold; the adjustment mode determination module 330 includes a parameter determination fourth unit and a cooling adjustment mode determination unit.

[0084] The fourth parameter determination unit is used to determine the target controllable device in the target controllable parameters as a chiller unit when the relative flow rate of chilled water at any of the air conditioning terminals is greater than the second relative flow rate threshold and less than the third relative flow rate threshold, the current operating frequency of the chilled water pump is at the second operating frequency, and the current supply water temperature of the chiller unit is higher than the second supply water temperature; the second supply water temperature is lower than the first supply water temperature.

[0085] The cooling regulation mode determination unit is used to determine the target regulation mode corresponding to the chiller unit as the cooling regulation mode.

[0086] Based on the above-mentioned device, optionally, the adjustment mode determination module 330 includes a parameter determination fifth unit and an adjustment mode determination unit.

[0087] The fifth parameter determination unit is used to determine the target controllable device in the target controllable parameters as a chiller unit when the relative flow rate of chilled water at any of the air conditioning terminals reaches the third relative flow rate threshold, the environmental information of the environment to which the air conditioning terminal belongs is greater than the preset environmental threshold corresponding to the environmental information, and the current water supply temperature of the chiller unit is higher than the second water supply temperature; wherein, the environmental information includes the ambient temperature or the ambient humidity.

[0088] The adjustment mode determination unit is used to determine that the target adjustment mode corresponding to the chiller unit is the cooling adjustment mode.

[0089] The energy-saving control device for the air conditioning water system provided in this embodiment of the invention can execute the energy-saving control method for the air conditioning water system provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0090] Example 4

[0091] Figure 4 This is a schematic diagram of the structure of an electronic device implementing the energy-saving control method for an air conditioning water system according to an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0092] like Figure 4As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0093] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0094] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as energy-saving control methods for air conditioning water systems.

[0095] In some embodiments, the energy-saving control method for the air conditioning water system can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded into and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the energy-saving control method for the air conditioning water system described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the energy-saving control method for the air conditioning water system by any other suitable means (e.g., by means of firmware).

[0096] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0097] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0098] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0099] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0100] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0101] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0102] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0103] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. An energy-saving control method for an air conditioning water system, characterized in that, include: The current flow rate of chilled water at each air conditioning terminal in the air conditioning water system is obtained; wherein, the air conditioning water system includes a device to be controlled, and the device to be controlled includes a chiller unit and a chilled water pump; Based on the current chilled water flow rate of the air conditioning terminal and the preset rated chilled water flow rate, the relative chilled water flow rate of the air conditioning terminal is determined; Based on the relative flow rate of chilled water at the air conditioning terminal, a preset relative flow rate threshold for chilled water, and the current operating information of the device to be controlled, a target device to be controlled is determined, and a target adjustment mode corresponding to the target device to be controlled is determined; the relative flow rate threshold for chilled water includes a first relative flow rate threshold. The operating information of the target control device is adjusted based on the target adjustment method. The process of determining the target device to be controlled based on the relative flow rate of chilled water at the air conditioning terminal, a preset relative flow rate threshold of chilled water, and the current operating information of the device to be controlled, and determining the target adjustment mode corresponding to the target device to be controlled, includes: When it is detected that the relative flow rate of chilled water at all the air conditioning terminals is less than the first relative flow rate threshold, and the current supply water temperature of the chiller unit is at the first supply water temperature, and the current operating information of the chilled water pump is higher than the first operating frequency, the target device to be controlled is determined to be the chilled water pump; wherein, the current operating information includes the current operating frequency; The target adjustment mode corresponding to the chilled water pump is determined to be the frequency reduction adjustment mode.

2. The method according to claim 1, characterized in that, Determining the relative flow rate of chilled water at the air conditioning terminal based on the current flow rate of chilled water at the air conditioning terminal and the preset rated flow rate of chilled water includes: The relative flow rate of chilled water at the air conditioning terminal is obtained by comparing the current flow rate of chilled water with the preset rated flow rate of chilled water.

3. The method according to claim 1, characterized in that, The process of determining the target device to be controlled based on the relative flow rate of chilled water at the air conditioning terminal, a preset relative flow rate threshold of chilled water, and the current operating information of the device to be controlled, and determining the target adjustment mode corresponding to the target device to be controlled, includes: When it is detected that the relative flow rate of chilled water at all the air conditioning terminals is less than the first relative flow rate threshold, and the current operating information of the chiller unit is lower than the first supply water temperature, the target device to be controlled is determined to be a chiller unit; wherein, the current operating information includes the current supply water temperature; The target adjustment mode corresponding to the chiller unit is determined to be the temperature rise adjustment mode.

4. The method according to claim 1, characterized in that, The chilled water relative flow rate threshold includes a second relative flow rate threshold, which is greater than the first relative flow rate threshold. The process of determining the target device to be controlled based on the chilled water relative flow rate of the air conditioning terminal, the preset chilled water relative flow rate threshold, and the current operating information of the device to be controlled, and determining the target adjustment mode corresponding to the target device to be controlled, includes: When the relative flow rate of chilled water at any of the air conditioning terminals is detected to be greater than the second relative flow rate threshold, and the current operating frequency of the chilled water pump is lower than the second operating frequency, the target device to be controlled is determined to be a chilled water pump; wherein, the second operating frequency is greater than the first operating frequency; The target adjustment mode corresponding to the chilled water pump is determined to be the frequency increase adjustment mode.

5. The method according to claim 4, characterized in that, The chilled water relative flow rate threshold includes a third relative flow rate threshold, which is greater than the second relative flow rate threshold; the step of determining the target device to be controlled based on the chilled water relative flow rate of the air conditioning terminal, the preset chilled water relative flow rate threshold, and the current operating information of the device to be controlled, and determining the target adjustment mode corresponding to the target device to be controlled, includes: When the relative flow rate of chilled water at any of the air conditioning terminals is detected to be greater than the second relative flow rate threshold and less than the third relative flow rate threshold, and the current operating frequency of the chilled water pump is at the second operating frequency, and the current supply water temperature of the chiller unit is higher than the second supply water temperature, the target device to be controlled is determined to be a chiller unit; the second supply water temperature is lower than the first supply water temperature. The target adjustment mode corresponding to the chiller unit is determined to be the cooling adjustment mode.

6. The method according to claim 5, characterized in that, The process of determining the target device to be controlled based on the relative flow rate of chilled water at the air conditioning terminal, a preset relative flow rate threshold of chilled water, and the current operating information of the device to be controlled, and determining the target adjustment mode corresponding to the target device to be controlled, includes: When the relative flow rate of chilled water at any of the air conditioning terminals reaches a third relative flow rate threshold, and the environmental information of the environment to which the air conditioning terminal belongs is greater than a preset environmental threshold corresponding to the environmental information, and the current water supply temperature of the chiller unit is higher than the second water supply temperature, the target device to be controlled is determined to be a chiller unit; wherein, the environmental information includes ambient temperature or ambient humidity; The target adjustment mode corresponding to the chiller unit is determined to be the cooling adjustment mode.

7. An energy-saving control device for an air conditioning water system, characterized in that, The air conditioning water system includes at least one air conditioning terminal and at least one device to be controlled, the device including: A chilled water current flow acquisition module is used to acquire the current chilled water flow of each air conditioning terminal in the air conditioning water system; wherein, the air conditioning water system includes a device to be controlled, and the device to be controlled includes a chiller unit and a chilled water pump; The chilled water relative flow rate determination module is used to determine the relative flow rate of the chilled water at the air conditioning terminal based on the current flow rate of the chilled water at the air conditioning terminal and the preset rated flow rate of the chilled water. The adjustment mode determination module is used to determine the target device to be controlled based on the relative flow rate of chilled water at the air conditioning terminal, a preset relative flow rate threshold of chilled water, and the current operating information of the device to be controlled, and to determine the target adjustment mode corresponding to the target device to be controlled; the relative flow rate threshold of chilled water includes a first relative flow rate threshold; The control module is used to regulate the operating information of the target controllable device based on the target adjustment method; The adjustment method determination module is specifically used for: When it is detected that the relative flow rate of chilled water at all the air conditioning terminals is less than the first relative flow rate threshold, and the current supply water temperature of the chiller unit is at the first supply water temperature, and the current operating information of the chilled water pump is higher than the first operating frequency, the target device to be controlled is determined to be the chilled water pump; wherein, the current operating information includes the current operating frequency; The target adjustment mode corresponding to the chilled water pump is determined to be the frequency reduction adjustment mode.

8. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform an energy-saving control method for an air conditioning water system according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement an energy-saving control method for an air conditioning water system according to any one of claims 1-6.

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