Dynamic self-adaptive water chilling unit energy-saving adjusting method and system

Abstract

The invention relates to a dynamic self-adaptive water chilling unit energy-saving adjusting method and system which are used for solving the problem that the energy consumption of the system is too high due to the fact that a water chilling unit operates for a long time under the fixed working condition, and the method comprises the steps that the return water flow, the return water temperature and the water supply temperature of chilled water are obtained; calculating the current cooling load of the system based on the return water flow and the supply and return water temperature; determining a cooling load correction temperature according to the maximum cooling load and the current cooling load; acquiring a preset target relative humidity and an actual average relative humidity, and determining a dehumidification correction temperature according to the preset target relative humidity and the average relative humidity; determining a water outlet temperature correction value based on the cold load correction temperature and the dehumidification correction temperature; according to the outlet water temperature correction value, the preset standard working condition water supply temperature is corrected; and the chilled water outlet temperature of the water chilling unit is adjusted according to the chilled water outlet temperature target value. According to the method, the outlet water temperature is adjusted, the refrigeration requirement is met, the dehumidification effect is considered, and the overall energy efficiency of the system is improved.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration equipment, and more specifically, to a dynamic self-adaptive chiller energy-saving regulation method and system. Background Art

[0002] At present, the refrigeration room in the subway station usually operates with a fixed chilled water outlet temperature of 7°C and a return water temperature difference of 5°C. This condition is designed based on the most extreme weather conditions to ensure that the cooling capacity of the refrigeration room can meet the needs of the terminal equipment in the hottest weather in summer. At the same time, it can also ensure that the air-conditioning chilled water reaches a low enough temperature to meet the dehumidification dew point requirements during humid periods, thereby effectively dehumidifying.

[0003] However, this design does not fully consider the energy-saving improvement of the air-conditioning system under the terminal load and transition seasons. Since the refrigeration room in the prior art operates under fixed conditions for a long time, the efficiency of the host and the system is often at a low level. For every 1°C increase in the water supply temperature, the energy efficiency of the host can be improved by about 3.0%. Therefore, this inefficient operation state under fixed conditions will lead to low system energy efficiency in the long-term operation process, which will lead to problems of excessive energy consumption and increased operating costs. Summary of the invention

[0004] The present invention aims to overcome at least one defect (shortcoming) of the above-mentioned prior art and provide a dynamic adaptive chiller energy-saving adjustment method and system for solving the problem of low system energy efficiency and excessive energy consumption caused by long-term operation of the chiller under fixed working conditions.

[0005] According to a first aspect of the present application, a dynamic adaptive chiller energy-saving adjustment method is provided, the method comprising: Obtain the return flow, return temperature and supply temperature of chilled water; Calculate the current cooling load of the chiller based on the return water flow, return water temperature and supply water temperature; Acquire the maximum cooling load of the chiller, and determine the cooling load correction temperature according to the maximum cooling load and the current cooling load; Obtaining a preset target relative humidity and an actual average relative humidity of a cooling environment corresponding to the chiller, and determining a dehumidification correction temperature according to the preset target relative humidity and the actual average relative humidity; Determine the outlet water temperature correction value based on the cooling load correction temperature and the dehumidification correction temperature; The preset standard working condition water supply temperature is corrected according to the outlet water temperature correction value to obtain the target value of the chilled water outlet water temperature; The chilled water outlet temperature of the chiller is adjusted according to the chilled water outlet temperature target value.

[0006] The cooling load correction temperature is obtained by calculating the current cooling load in real time and comparing it with the maximum cooling load. The dehumidification correction temperature is determined by considering the difference between the actual average relative humidity and the preset target relative humidity. The adjustment of the chilled water outlet temperature can meet the cooling demand while taking into account the dehumidification effect, which can better meet the actual operation needs and avoid the energy efficiency loss caused by excessive cooling or insufficient dehumidification under traditional fixed working conditions, thereby improving the overall energy efficiency of the air-conditioning system.

[0007] Optionally, the calculation formula of the current cooling load is as follows: = c× ×v×(T2 - T1) in, is the current cooling load, v is the return flow of chilled water, is the density of chilled water, c is the specific heat capacity of chilled water, T2 is the return temperature of chilled water, and T1 is the supply temperature of chilled water.

[0008] By calculating the cooling load correction value, the chiller can obtain the current cooling load of the chiller in real time, and subsequently the cooling load correction temperature can be calculated more accurately based on the current cooling load.

[0009] Optionally, the cooling load correction temperature The specific calculation formula is: in, β is the upper limit deviation constant of the water supply temperature, is the maximum cooling load, is the current cooling load.

[0010] Optionally, determining the dehumidification correction temperature according to the preset target relative humidity and the actual average relative humidity includes: Calculating a relative humidity difference between the actual average relative humidity and the preset target relative humidity; determining a dehumidification correction coefficient according to the relative humidity difference; The dehumidification correction temperature is determined based on the dehumidification correction coefficient.

[0011] By adjusting the dehumidification correction temperature through the relative humidity difference, the chiller can adjust the ambient humidity within the preset target range according to the dehumidification correction temperature, making the dehumidification temperature of the chiller more reasonable and accurate, thereby improving the energy efficiency of the chiller.

[0012] Optionally, determining a dehumidification correction coefficient according to the relative humidity difference includes: Determine whether the relative humidity difference is less than or equal to a first preset difference threshold, and if the relative humidity difference is less than or equal to the first preset difference threshold, set the dehumidification correction coefficient as the initial dehumidification correction coefficient; If the relative humidity difference is greater than a first preset difference threshold, then every time the relative humidity difference increases by a preset humidity amplitude, the dehumidification correction coefficient is the initial dehumidification correction coefficient increased by a preset coefficient amplitude.

[0013] By calculating the relative humidity difference to adjust the dehumidification correction coefficient, the dehumidification correction temperature can be dynamically determined according to the relative humidity difference, so that the chiller can dynamically adjust the dehumidification correction temperature according to environmental changes, thereby enhancing the flexibility of the chiller.

[0014] Optionally, the calculation formula of the dehumidification correction temperature is as follows: in, Corrected temperature for dehumidification, is the dehumidification correction factor, β It is the upper limit deviation constant allowed for water supply temperature.

[0015] Optionally, the method further comprises acquiring a value of a dynamically adjusted weight coefficient based on the relative humidity difference; The outlet water temperature correction value The specific calculation is obtained through the following formula: = Among them, K is the weight coefficient, and the value range of K is 0~100%. Indicates the cooling load corrected temperature.

[0016] Optionally, acquiring a value of a dynamic adjustment weight coefficient based on the relative humidity difference includes: Initialize the weight coefficient K; Update the relative humidity difference at a preset adaptive adjustment time interval ; Get the relative humidity difference from the previous calculation , determine the current relative humidity difference Is it greater than the second preset difference threshold? If the current relative humidity difference Greater than the second preset difference threshold and greater than or equal to the relative humidity difference calculated last time , the weight coefficient K increases by a first preset amplitude until it increases by a maximum preset amplitude; If the current relative humidity difference is less than or equal to a second preset difference threshold, the weight coefficient K is reduced by a second preset amplitude until the weight coefficient is reduced by a minimum preset amplitude; If the current relative humidity difference Greater than the second preset difference threshold and less than the relative humidity difference calculated last time , the weight coefficient K remains unchanged.

[0017] By dynamically adjusting the weight coefficient K, the chiller can more accurately adjust the dehumidification performance of the chiller according to the real-time changes in ambient humidity, so that the ambient humidity can be kept within the preset range. When the ambient humidity decreases, the weight of the dehumidification correction temperature is reduced by reducing the value of the weight coefficient K, so that the dehumidification correction temperature is more in line with actual operating needs.

[0018] Optionally, the calculation formula for the target value of the chilled water outlet temperature is: in, It is the preset water supply temperature target value under standard working conditions. It is the target value of chilled water outlet temperature.

[0019] According to a second aspect of the present application, a dynamic adaptive chiller energy-saving regulation system is provided, the system comprising: An acquisition module is used to obtain the return water flow, return water temperature and supply water temperature of the chilled water; A cooling load calculation module, used to calculate the current cooling load of the chiller based on the return water flow, return water temperature and supply water temperature; A cooling load correction temperature acquisition module is used to obtain the maximum cooling load of the chiller and determine the cooling load correction temperature according to the maximum cooling load and the current cooling load; A dehumidification correction temperature acquisition module is used to obtain a preset target relative humidity and an actual average relative humidity of the cooling environment corresponding to the chiller, and determine a dehumidification correction temperature according to the preset target relative humidity and the actual average relative humidity; An outlet water temperature correction value acquisition module is used to determine an outlet water temperature correction value based on a cooling load correction temperature and a dehumidification correction temperature; The target temperature acquisition module is used to correct the preset standard working condition water supply temperature according to the outlet water temperature correction value to obtain the chilled water outlet water temperature target value; The regulating module is used to adjust the chilled water outlet temperature of the chiller according to the chilled water outlet temperature target value.

[0020] According to a third aspect of the present application, an electronic device is provided, including: a memory for storing one or more computer programs; The processor implements the dynamic adaptive chiller energy-saving adjustment method described in the first aspect when the one or more computer programs are executed by the processor.

[0021] According to a fourth aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the dynamic adaptive chiller energy-saving adjustment method described in the first aspect when executed.

[0022] Based on any of the above aspects, the dynamic adaptive chiller energy-saving adjustment method and system provided in the embodiment of the present application has the following beneficial effects compared with the prior art: 1. The cooling load correction temperature is obtained by calculating the cooling load of the chiller in real time and comparing it with the maximum cooling load. At the same time, the dehumidification correction temperature is determined by considering the difference between the actual average relative humidity and the preset target relative humidity. The adjustment of the outlet water temperature can meet the cooling demand and take into account the dehumidification effect, which can be more in line with the actual operation needs. It avoids the situation where excessive energy consumption due to over-cooling under traditional fixed working conditions or insufficient dehumidification capacity of the terminal equipment that the chiller needs to cool affects the user's comfort. The air-conditioning system can operate in a suitable state, which not only improves the overall energy efficiency of the air-conditioning system and improves the user's comfort experience, but also effectively reduces energy consumption.

[0023] 2. The dynamic adaptive chiller energy-saving adjustment method and system provided in the embodiment of the present application can automatically adjust the chilled water outlet temperature according to different cold and wet loads in the environment without manual intervention. It has wide applicability and can flexibly respond to usage requirements in various scenarios. It can achieve significant energy-saving effects in scenarios such as rail transit. It has been verified by experiments that the comprehensive energy saving can reach 18% throughout the year. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a schematic flow chart of a dynamic adaptive chiller energy-saving regulation method according to an embodiment of the present invention.

[0025] Figure 2 The figure is a flow chart of a specific method for determining a dehumidification correction coefficient according to an embodiment of the present invention.

[0026] Figure 3 The figure is a schematic diagram of the adjustment process of the weight coefficient according to an embodiment of the present invention.

[0027] Figure 4 This is a structural schematic diagram of a dynamic adaptive chiller energy-saving regulation system according to Example 2 of the present invention.

[0028] Figure 5 A schematic diagram of an application scenario of the dynamic adaptive chiller energy-saving regulation method provided in this embodiment.

[0029] Figure 6 A schematic diagram of the structure of an electronic device provided by this embodiment. DETAILED DESCRIPTION

[0030] The drawings of the present invention are only for illustrative purposes and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0032] 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 are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Example 1 This embodiment provides a technical solution that can solve the above-mentioned problem. The specific implementation methods of this application are described in detail below in conjunction with the accompanying drawings.

[0034] For example, a schematic diagram of an application scenario of a dynamic adaptive chiller energy-saving adjustment method provided in an embodiment of the present application is provided. Figure 5 As shown, the application scenario at least includes a server 100 and a terminal 200 that can communicate with the server 100. The server 100 has a data processing function; the terminal 200 has a data display function and may also have a control function.

[0035] It is understandable that the server 100 can be an independent electronic device or a cluster of multiple electronic devices; the terminal 200 can be a smart phone terminal, a personal computer, a tablet computer, a car terminal, etc., but is not limited thereto.

[0036] In one practicable manner, the server 100 and the terminal 200 can respectively execute the dynamic adaptive chiller energy-saving adjustment method provided in the embodiment of the present application, or, optionally, the dynamic adaptive chiller energy-saving adjustment method provided in the embodiment of the present application is partially executed in the server 100 and partially executed in the terminal 200.

[0037] like Figure 1 As shown, this embodiment provides a dynamic adaptive chiller energy-saving adjustment method, which may include the following steps: S110, obtaining the return water flow, return water temperature and supply water temperature of the chilled water.

[0038] In the specific implementation process, the supply temperature T1 and return temperature T2 of the chilled water can be measured by installing temperature measuring instruments such as high-precision PT1000 temperature transmitters on the chilled water supply pipe and return pipe of the chiller. Similarly, a flow meter can be installed on the return main pipe of the chiller to monitor the return flow of the chilled water in real time. In the embodiment of the present application, the return flow of the chilled water can be recorded as v.

[0039] S120. Calculate the current cooling load of the chiller based on the return water flow, return water temperature and supply water temperature.

[0040] After obtaining the return water flow, return water temperature, and supply water temperature in real time, the current cooling load of the chiller can be calculated based on these parameters. The calculation formula for the current cooling load is as follows: = c× ×v×(T2 - T1) in, is the current cooling load of the chiller, v is the return flow of chilled water, is the density of chilled water, c is the specific heat capacity of chilled water, T2 is the return temperature of chilled water, and T1 is the supply temperature of chilled water.

[0041] In the specific implementation process, the specific heat capacity c of chilled water can be taken as 4.186 kJ / (kg・℃), the unit of return water flow v can be converted into cubic meters per hour (m³ / h), and the density of chilled water 1000kg / m³ can be used.

[0042] By acquiring various parameters of the chiller in real time, the current cooling load of the chiller can be calculated more accurately based on the return water flow, supply water temperature and return water temperature.

[0043] S130. Obtain a maximum cooling load of the chiller, and calculate a cooling load correction temperature according to the maximum cooling load and the current cooling load.

[0044] In this embodiment, the maximum cooling load of the chiller is It can be determined by obtaining the rated parameters of the chiller, or by obtaining historical operation and maintenance data, or by field testing. It is understandable that this is only for the maximum cooling load. The determination method is exemplified for illustration only and is not limited to the determination method.

[0045] It is understandable that in a chiller, if the water supply temperature is too low, it may lead to problems such as increased energy consumption of the chiller and increased equipment wear; if the water supply temperature is too high, it may not be able to meet the load demand, resulting in poor cooling effect. Therefore, the water supply temperature of the chilled water in the chiller needs to be controlled within a certain range.

[0046] Assume that the upper limit deviation constant of the chiller water supply temperature is β , that is, the maximum allowable deviation of the water supply temperature of the chiller within the normal operating range is β , β The unit can be ℃, then the cooling load correction value The calculation formula is as follows: in, is the maximum cooling load, is the current cooling load.

[0047] In the specific implementation process, the upper limit deviation constant of the water supply temperature of the chiller can be determined according to the actual situation of the chiller and the cooling demand. β For example, the upper limit deviation constant of the water supply temperature of the chiller is β Set to 5℃, then the cooling load correction value is The calculation formula is = , then according to the formula, the cooling load correction value can be obtained The correction range is 0~5℃.

[0048] S140, obtaining a preset target relative humidity and an actual average relative humidity of a cooling environment corresponding to the chiller, and determining a dehumidification correction temperature according to the preset target relative humidity and the actual average relative humidity.

[0049] In this embodiment, the actual average relative humidity can be obtained by installing a humidity sensor in the cooling environment corresponding to the chiller to measure the ratio of the actual water vapor content in the cooling environment air to the saturated water vapor content at the current temperature. The preset target relative humidity can be flexibly set according to actual needs. For example, in summer, the preset target relative humidity can be set to 40%, or it can be set to other values, which are not limited in this embodiment. After obtaining the preset target relative humidity and the actual average relative humidity, the relative humidity difference between the average relative humidity and the preset target relative humidity is calculated. ,Right now = preset target relative humidity - actual average relative humidity. Calculate the relative humidity difference Then, the relative humidity difference can be Determining the Dehumidification Correction Factor Then, based on the dehumidification correction factor The dehumidification correction temperature is determined by the number. Figure 2 As shown, the dehumidification correction factor The specific determination method is as follows: A1. Determine the relative humidity difference Is it less than or equal to the first preset difference threshold? If the relative humidity difference is less than or equal to the first preset difference threshold, the dehumidification correction coefficient is set as an initial dehumidification correction coefficient; illustratively, the first preset difference threshold value may be set to 0, and the initial dehumidification correction coefficient may be set to 0%; A2. If the relative humidity difference is greater than a first preset difference threshold, the relative humidity difference Each time the preset humidity range is increased, the dehumidification correction factor The preset coefficient amplitude is increased for the initial dehumidification correction coefficient; for example, the preset coefficient amplitude can be set to 1%, 2%, 4% or other percentage values, and the preset humidity amplitude can also be set to 1%, 5% or other percentage values. For example, assuming that the initial dehumidification correction coefficient is set to 0%, the first preset difference threshold is 0, if the relative humidity difference When the preset coefficient amplitude is set to 1%, 2% or 4%, the corresponding dehumidification correction coefficient is They are 2%, 4% and 8% respectively.

[0050] In a preferred embodiment, the dehumidification correction temperature is determined The formula is as follows: in, Corrected temperature for dehumidification, is the dehumidification correction factor, It is the upper limit deviation constant allowed for water supply temperature.

[0051] For example, assuming that the preset target relative humidity is 50%, the actual average relative humidity of the current environment is 70%, and the upper limit deviation constant of the water supply temperature of the chiller is is 5°C, the initial dehumidification correction coefficient is set to 0%, the first preset difference threshold is 0 and the preset coefficient amplitude is set to 5%, then the relative humidity difference =70%-50%, then the dehumidification correction factor The value is 40%, so the dehumidification correction temperature value = -5℃×40% = -2℃.

[0052] S150: Determine a water outlet temperature correction value based on the cooling load correction temperature and the dehumidification correction temperature.

[0053] After obtaining the cooling load correction temperature and dehumidification correction temperature After that, the water temperature correction value can be calculated based on these two correction temperatures. . Water outlet temperature correction value The specific calculation formula is as follows: = ×(1-K) + × (1+K) Among them, K is the weight coefficient, and the value range of K is 0~100%.

[0054] In a specific implementation process, the value of the dynamic adjustment weight coefficient K can be obtained based on the relative humidity difference. Figure 3 As shown, obtaining the value of the dynamic adjustment weight coefficient K includes: B1, initialize the weight coefficient K; In this embodiment, the value range of the weight coefficient K is [0~1].

[0055] B2. Update the relative humidity difference at every preset adaptive adjustment time interval ; In the specific implementation process, the preset adaptive adjustment time interval can be set to 20 minutes or 30 minutes, or to other time intervals. The specific value of the adaptive adjustment time interval can be set according to actual conditions, and is only used as an example here.

[0056] B3. Get the relative humidity difference calculated last time , determine the current relative humidity difference Is it greater than the second preset difference threshold? If the current relative humidity difference Greater than the second preset difference threshold and greater than or equal to the relative humidity difference calculated last time , the weight coefficient K increases by a first preset amplitude until it increases by a maximum preset amplitude; Exemplarily, the first preset amplitude can be set to 5%, and the maximum preset amplitude can be set to 100% or other values ​​greater than 0 and less than 100%. When the weight coefficient K increases to be greater than or equal to the maximum preset amplitude value, the weight coefficient K should be the maximum preset amplitude value.

[0057] B4. If the current relative humidity difference If the difference is less than or equal to the second preset difference threshold, the weight coefficient K is reduced by a second preset amplitude until the weight coefficient is reduced by a minimum preset amplitude.

[0058] Exemplarily, the second preset difference threshold can be set to 0, the second preset amplitude can be set to 5%, and the minimum preset amplitude can be set to 0%; similarly, when the weight coefficient K is reduced to less than or equal to the minimum preset amplitude, the weight coefficient K should be the minimum preset amplitude.

[0059] B5. If the current relative humidity difference Greater than the second preset difference threshold and less than the relative humidity difference calculated last time , the weight coefficient K remains unchanged.

[0060] S160: Correct the preset standard operating water supply temperature according to the outlet water temperature correction value to obtain a target value of the chilled water outlet temperature.

[0061] In this embodiment, the outlet water temperature correction value can be used The preset water supply temperature target value under standard working conditions is corrected to obtain the chilled water outlet temperature target value. The calculation formula for the chilled water outlet temperature target value is: in, It is the preset water supply temperature target value under standard working conditions. is the target value of the chilled water outlet temperature. The value can be flexibly set according to actual needs. For example, in rail transit scenarios such as subways, the target value of water supply temperature under standard working conditions is Can be set to 7°C.

[0062] For example, assuming the target water supply temperature under standard conditions is is 7°C, and by calculation = 3°C, = -2℃, weight coefficient K is 10%, then the outlet water temperature correction value =3℃×0.9 + -2℃×1.1 = 0.5℃, so the target chilled water outlet temperature is: = 7℃ + = 7.5℃; S170. Adjust the chilled water outlet temperature of the chiller according to the chilled water outlet temperature target value.

[0063] In the specific implementation process, in order to ensure the stability of the chiller, an adaptive adjustment time interval can be preset, and the dehumidification load correction value and the cooling load correction value can be calculated every preset adaptive adjustment time. For example, in a specific method, the adaptive adjustment time interval defaults to detection every 20 minutes, and can also be adjusted according to the specific usage scenario.

[0064] In an optional embodiment, when the chiller is first started, the outlet temperature of the chilled water can be based on the target water supply temperature under standard operating conditions. After running stably for a period of time, the chiller can smoothly establish the circulation of chilled water and gradually reach a stable state. After the chiller runs stably, the dynamic adaptive chiller energy-saving adjustment method in this scheme is implemented to more accurately calculate the cooling load demand of the chiller's cooling environment, and at the same time, the operation of the terminal equipment that the chiller needs to cool gradually stabilizes, reaching an overall steady state, and further improving the accuracy of the adjustment.

[0065] Example 2 Figure 4 As shown, the embodiment of the present application also provides a dynamic adaptive chiller energy-saving adjustment system 610, and the system 610 includes: An acquisition module 611 is used to acquire the return water flow rate, return water temperature and supply water temperature of the chilled water; In this embodiment, the acquisition module 611 can be used to execute Figure 2 As shown in step S110, for the specific description of the acquisition module 611, reference may be made to the description of step S110.

[0066] A cooling load calculation module 612, for calculating the current cooling load of the chiller based on the return water flow, return water temperature and supply water temperature; In this embodiment, the cooling load calculation module 612 can be used to perform Figure 2 As shown in step S120, for a detailed description of the cooling load calculation module 612, reference may be made to the description of step S120.

[0067] A cooling load correction temperature acquisition module 613 is used to acquire the maximum cooling load of the chiller and determine the cooling load correction temperature according to the maximum cooling load and the current cooling load; In this embodiment, the cooling load correction temperature acquisition module 613 can be used to perform Figure 2 As shown in step S130 , for a detailed description of the cooling load correction temperature acquisition module 613 , reference may be made to the description of step S130 .

[0068] The dehumidification correction temperature acquisition module 614 is used to obtain the preset target relative humidity and the actual average relative humidity of the cooling environment corresponding to the chiller, and determine the dehumidification correction temperature according to the preset target relative humidity and the actual average relative humidity; In this embodiment, the dehumidification correction temperature acquisition module 614 can be used to perform Figure 2 As shown in step S140, for the detailed description of the dehumidification correction temperature acquisition module 614, reference may be made to the description of step S140.

[0069] The outlet water temperature correction value acquisition module 615 is used to determine the outlet water temperature correction value based on the cooling load correction temperature and the dehumidification correction temperature; In this embodiment, the outlet water temperature correction value acquisition module 615 can be used to execute Figure 2 As shown in step S150 , for a detailed description of the outlet water temperature correction value acquisition module 615 , reference may be made to the description of step S150 .

[0070] The target temperature acquisition module 616 is used to correct the preset standard working condition water supply temperature according to the outlet water temperature correction value to obtain the chilled water outlet water temperature target value; In this embodiment, the outlet water temperature correction value acquisition module 616 can be used to execute Figure 2 As shown in step S160 , for a detailed description of the outlet water temperature correction value acquisition module 616 , reference may be made to the description of step S160 .

[0071] The regulating module 617 is used to adjust the chilled water outlet temperature of the chiller according to the chilled water outlet temperature target value.

[0072] In this embodiment, the adjustment module 617 can be used to perform Figure 2 As shown in step S170, for the specific description of the adjustment module 617, reference may be made to the description of step S170.

[0073] It can be understood that the above-mentioned system embodiments and the above-mentioned method embodiments can correspond to each other, and similar descriptions of the system embodiments can refer to the method embodiments. To avoid repetition, it will not be repeated here. A dynamic adaptive chiller energy-saving adjustment system provided in an embodiment of the present application can execute a dynamic adaptive chiller energy-saving adjustment method provided in any embodiment of the present application, and has functional modules and beneficial effects corresponding to the execution method. The functional modules of the dynamic adaptive chiller energy-saving adjustment system can be implemented in the form of hardware, can be implemented by instructions in the form of software, and can also be implemented by a combination of hardware and software modules.

[0074] Specifically, each step of the method embodiment of the present application can be completed by the hardware integrated logic circuit and / or software instructions in the processor. The steps of the dynamic adaptive chiller energy-saving adjustment method in combination with the embodiment of the present application can be directly embodied as a hardware coding processor for execution, or a combination of hardware and software modules in the coding processor for execution. Optionally, the software module can be located in a random access memory, a read-only memory, a programmable read-only memory, a flash memory, an electrically erasable programmable memory, a register, or other storage media. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps in the above method embodiment in combination with its hardware.

[0075] The present application embodiment provides an electronic device 710, whose structure is as follows: Figure 6 The electronic device 710 may be Figure 5 The server 100 or the terminal 200 is shown.

[0076] like Figure 6 As shown, the electronic device 710 includes a memory 711, a processor 712, a communication module 713 and an input / output interface 714, etc. Optionally, the memory 711, the processor 712, the communication module 713 and the input / output interface 714 can be connected and communicated through a bus 715.

[0077] The memory 711 is used to store one or more computer programs and transmit the code of the computer program to the processor 712; when the one or more computer programs are executed by the processor 712, the dynamic adaptive chiller energy-saving adjustment method in the embodiment of the present application is implemented.

[0078] Optionally, the electronic device 710 can be connected to a network via a communication module 713 to communicate with other devices, such as a terminal or a server, through the network to achieve data interaction. The electronic device 710 can be various forms of digital computers, such as desktop computers, servers, workstations, mainframe computers or other types of computers. The electronic device 710 can also be various forms of mobile terminals, such as smart phones, tablet computers, wearable devices (such as helmets, glasses, watches, etc.) and other similar mobile terminals.

[0079] Optionally, the electronic device 710 can be connected to the required input / output devices, such as a keyboard, a display device, etc., through the input / output interface 714. The electronic device 710 itself can have a display device, and can also be connected to other display devices through the input / output interface 714. Optionally, a storage device, such as a hard disk, can also be connected through the input / output interface 714, so that data in the electronic device 710 can be stored in the storage device, or data in the storage device can be read, and data in the storage device can also be stored in the memory 711. It can be understood that the input / output interface 714 can be a wired interface or a wireless interface. Depending on the actual application scenario, the device connected to the input / output interface 714 can be a component of the electronic device 710, or it can be an external device connected to the electronic device 710 when needed.

[0080] Optionally, the memory 711 may be a volatile memory and / or a non-volatile memory, the volatile memory may be a random access memory, etc., and the non-volatile memory may be a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory or a flash memory, etc.

[0081] Optionally, the computer program stored in the processor 712 may be divided into one or more modules, which are stored in the memory 711 and executed by the processor 712 to complete the method provided in the embodiment. The one or more modules may be a series of computer program instruction segments capable of completing specific functions, and the computer program instruction segments are used to describe the execution process of the computer program in the electronic device 710.

[0082] Optionally, the processor 712 may be various general and / or special processing components with processing and computing capabilities. Some examples of the processor 712 include, but are not limited to, a central processing unit, a graphics processing unit, a digital signal processor, various special artificial intelligence computing chips, various processors running machine learning model algorithms, and may also be any appropriate controller, microcontroller, processor, etc. The processor 712 executes various methods and processes of this embodiment, illustratively, such as a dynamic adaptive chiller energy-saving adjustment method of an embodiment of the present application.

[0083] Optionally, the bus 715 may include a path for transmitting information. The bus 715 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. According to different functions, the bus 715 may be divided into an address bus, a data bus, a control bus, etc.

[0084] In an optional implementation, the embodiment of the present application further provides a computer storage medium on which a computer program is stored, and when the computer program is executed by a computer, the computer can perform the method of the above method embodiment. Part or all of the computer program can be loaded and / or installed on the memory 711 of the electronic device 710. When the computer program is executed by the processor 712, one or more steps of a dynamic adaptive chiller energy-saving adjustment method of the embodiment of the present application can be executed.

[0085] Optionally, the computer-readable storage medium may be a random access memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, or the like.

[0086] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the technical solution of the present application, and are not intended to limit the specific implementation methods of the present application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A dynamic adaptive chiller energy-saving adjustment method, characterized in that: The method comprises: Obtain the return flow, return temperature and supply temperature of chilled water; Calculate the current cooling load of the chiller based on the return water flow, return water temperature and supply water temperature; Acquire the maximum cooling load of the chiller, and determine the cooling load correction temperature according to the maximum cooling load and the current cooling load; Obtaining a preset target relative humidity and an actual average relative humidity of a cooling environment corresponding to the chiller, and determining a dehumidification correction temperature according to the preset target relative humidity and the actual average relative humidity; Determine the outlet water temperature correction value based on the cooling load correction temperature and the dehumidification correction temperature; The preset standard working condition water supply temperature is corrected according to the outlet water temperature correction value to obtain the target value of the chilled water outlet water temperature; The chilled water outlet temperature of the chiller is adjusted according to the chilled water outlet temperature target value.

2. A dynamic adaptive chiller energy-saving adjustment method according to claim 1, characterized in that: The calculation formula of the current cooling load is as follows: = c× ×v×(T2 - T1) in, is the current cooling load, v is the return flow of chilled water, is the density of chilled water, c is the specific heat capacity of chilled water, T2 is the return temperature of chilled water, and T1 is the supply temperature of chilled water.

3. A dynamic adaptive chiller energy-saving adjustment method according to claim 2, characterized in that: The cooling load correction temperature The specific calculation formula is: in, is the upper limit deviation constant of the water supply temperature, is the maximum cooling load, is the current cooling load.

4. A dynamic adaptive chiller energy-saving adjustment method according to claim 1, characterized in that: The step of determining the dehumidification correction temperature according to the preset target relative humidity and the actual average relative humidity includes: Calculating a relative humidity difference between the actual average relative humidity and the preset target relative humidity; determining a dehumidification correction coefficient according to the relative humidity difference; The dehumidification correction temperature is determined based on the dehumidification correction coefficient.

5. A dynamic adaptive chiller energy-saving adjustment method according to claim 4, characterized in that: Determining the dehumidification correction coefficient according to the relative humidity difference includes: Determine whether the relative humidity difference is less than or equal to a first preset difference threshold, and if the relative humidity difference is less than or equal to the first preset difference threshold, set the dehumidification correction coefficient as the initial dehumidification correction coefficient; If the relative humidity difference is greater than a first preset difference threshold, then every time the relative humidity difference increases by a preset humidity amplitude, the dehumidification correction coefficient is the initial dehumidification correction coefficient increased by a preset coefficient amplitude.

6. A dynamic adaptive chiller energy-saving adjustment method according to claim 4 or 5, characterized in that: The calculation formula of the dehumidification correction temperature is as follows: in, Corrected temperature for dehumidification, is the dehumidification correction factor, β It is the upper limit deviation constant allowed for water supply temperature.

7. A dynamic adaptive chiller energy-saving adjustment method according to claim 6, characterized in that: The method further includes obtaining a value of a dynamically adjusted weight coefficient based on the relative humidity difference; The outlet water temperature correction value The specific calculation is obtained through the following formula: = Among them, K is the weight coefficient, and the value range of K is 0~100%. Indicates the cooling load corrected temperature.

8. A dynamic adaptive chiller energy-saving adjustment method according to claim 7, characterized in that: The step of obtaining a value of a dynamic adjustment weight coefficient based on the relative humidity difference comprises: Initialize the weight coefficient K; Update the relative humidity difference at a preset adaptive adjustment time interval ; Get the relative humidity difference from the previous calculation , determine the current relative humidity difference Is it greater than the second preset difference threshold? If the current relative humidity difference Greater than the second preset difference threshold and greater than or equal to the relative humidity difference calculated last time , the weight coefficient K increases by a first preset amplitude until it increases by a maximum preset amplitude; If the current relative humidity difference is less than or equal to a second preset difference threshold, the weight coefficient K is reduced by a second preset amplitude until the weight coefficient is reduced by a minimum preset amplitude; If the current relative humidity difference Greater than the second preset difference threshold and less than the relative humidity difference calculated last time , the weight coefficient K remains unchanged.

9. A dynamic adaptive chiller energy-saving adjustment method according to claim 8, characterized in that: The calculation formula of the target value of the chilled water outlet temperature is: in, It is the preset water supply temperature target value under standard working conditions. It is the target value of chilled water outlet temperature.

10. A dynamic adaptive chiller energy-saving regulation system, characterized in that: The system comprises: An acquisition module is used to obtain the return water flow, return water temperature and supply water temperature of the chilled water; A cooling load calculation module, used to calculate the current cooling load of the chiller based on the return water flow, return water temperature and supply water temperature; A cooling load correction temperature acquisition module is used to obtain the maximum cooling load of the chiller and determine the cooling load correction temperature according to the maximum cooling load and the current cooling load; A dehumidification correction temperature acquisition module is used to obtain a preset target relative humidity and an actual average relative humidity of the cooling environment corresponding to the chiller, and determine a dehumidification correction temperature according to the preset target relative humidity and the actual average relative humidity; An outlet water temperature correction value acquisition module is used to determine an outlet water temperature correction value based on a cooling load correction temperature and a dehumidification correction temperature; The target temperature acquisition module is used to correct the preset standard working condition water supply temperature according to the outlet water temperature correction value to obtain the chilled water outlet water temperature target value; The regulating module is used to adjust the chilled water outlet temperature of the chiller according to the chilled water outlet temperature target value.

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