A waste heat recovery control system and method based on central air conditioning

Abstract

The present invention discloses a waste heat recovery control system and method based on a central air conditioner, belonging to the technical field of energy-saving air conditioners. The system includes: a data acquisition module, an air supply volume initial calibration module, an air supply volume feedback adjustment module, and a central air conditioner database. First, the operating status data of the central air conditioner and the waste heat recovery control system are acquired, and the working environment data of the central air conditioner are collected. Then, based on the operating status data and working environment data of the central air conditioner, an initial calibration index of the air supply volume of the central air conditioner is obtained through comprehensive analysis. Based on the initial calibration index of the air supply volume of the central air conditioner, a preset air volume of the waste heat recovery control system is obtained. Finally, based on the operating status data of the waste heat recovery control system, an air supply volume adjustment parameter of the waste heat recovery control system is analyzed and the preset air volume of the waste heat recovery control system is adjusted according to the air supply volume adjustment parameter of the waste heat recovery control system.

Description

Technical Field

[0001] The present invention relates to the technical field of energy-saving air conditioning, and in particular to a waste heat recovery control system and method based on a central air conditioner. Background Art

[0002] With the rapid development of industrialization, energy consumption has increased dramatically, and the waste heat generated has also increased significantly. If this waste heat is directly discharged into the environment, it will not only cause energy waste, but also aggravate environmental pollution. In order to protect the environment, reduce greenhouse gas emissions and improve energy utilization efficiency, waste heat recovery control technology came into being.

[0003] Existing waste heat recovery control systems mainly extract waste heat from the production process through various heat exchangers, heat transfer equipment, etc., and convert it into usable energy forms such as hot water, steam or electricity, thereby realizing energy reuse, reducing energy consumption costs, and achieving the goal of energy conservation and emission reduction.

[0004] For example, the invention patent announcement with announcement number: CN117906268B discloses a waste heat recovery device for a heating, ventilation and air conditioning system, comprising: two water tanks and a support frame installed on the surface of the water tank and a recovery box installed on the surface of the support frame, so that the warm air after the waste heat recovery of the heating, ventilation and air conditioning system can be controlled, and the amount of warm air flowing into the water tank can be controlled, so that the amount of warm air released can be achieved according to the water temperature inside the water tank, thereby avoiding the inability to regulate the temperature according to the water temperature inside the water tank, affecting the working efficiency after the waste heat is recovered, affecting the effect of its utilization, greatly improving the performance of the waste heat treatment device, greatly improving the scope of use of the waste heat after recovery, making the device as a whole controllable, expanding the practicality of the device, and being able to be controlled according to the ambient temperature state, and being able to display its control data for easy observation by users.

[0005] For example, the waste heat recovery control system, method and central air conditioner of the central air conditioner disclosed in the invention patent with announcement number CN115789927B include: a control unit, which controls the operation of the refrigeration system of the central air conditioner when the central air conditioner is started; an acquisition unit, which acquires the temperature of the liquid in the cooling tower and the temperature of the liquid in the heat storage tank; the control unit also controls the opening and closing of the cooling tower fan according to the temperature of the liquid in the cooling tower; the control unit also controls the opening and closing of the membrane heat permeation component according to the temperature of the liquid in the heat storage tank when the cooling tower fan is turned on, so that when the membrane heat permeation component is turned on, the membrane heat permeation component uses the steam generated by heating the liquid inside the heat storage tank to drive the generator to generate electricity, thereby realizing the recovery and utilization of the exhaust waste heat of the cooling tower.

[0006] However, in the process of implementing the technical solutions of the invention in the embodiments of the present application, the present application found that the above technology has at least the following technical problems:

[0007] In the existing technology, central air conditioners are unable to accurately control the waste heat recovery system according to real-time operating conditions when performing waste heat recovery control, resulting in efficiency loss in the heat transfer and energy conversion process, and the waste heat recovery efficiency of central air conditioners is limited. Summary of the Invention

[0008] The embodiments of the present application provide a waste heat recovery control system and method based on a central air conditioner, thereby solving the problem in the prior art that the central air conditioner is unable to accurately control the waste heat recovery system according to the real-time operating conditions during waste heat recovery control, resulting in efficiency loss in the heat transfer and energy conversion process, and limiting the waste heat recovery efficiency of the central air conditioner, thereby achieving efficient and precise control of the waste heat recovery system.

[0009] An embodiment of the present application provides a waste heat recovery control system and method based on a central air-conditioning, comprising: a data acquisition module, an air supply volume initial calibration module, an air supply volume feedback adjustment module and a central air-conditioning database; wherein the data acquisition module is used to acquire the working status data of the central air-conditioning and the waste heat recovery control system, and collect the working environment data of the central air-conditioning; the air supply volume initial calibration module is used to comprehensively analyze the working status data and working environment data of the central air-conditioning to obtain the initial calibration index of the air supply volume of the central air-conditioning, and process the preset air volume of the waste heat recovery control system based on the initial calibration index of the air supply volume of the central air-conditioning; the air supply volume feedback adjustment module is used to analyze the working status data of the waste heat recovery control system to obtain the air supply volume adjustment parameters of the waste heat recovery control system, and adjust the preset air volume of the waste heat recovery control system according to the air supply volume adjustment parameters of the waste heat recovery control system.

[0010] Furthermore, based on the working status data and working environment data of the central air conditioner, a comprehensive analysis is conducted to obtain the initial calibration index of the air supply volume of the central air conditioner, including: obtaining the working status evaluation value of the central air conditioner based on the working status data of the central air conditioner; obtaining the working environment evaluation value of the central air conditioner based on the working environment data of the central air conditioner; and obtaining the initial calibration index of the air supply volume based on a comprehensive analysis of the working status evaluation value of the central air conditioner and the working environment evaluation value of the central air conditioner.

[0011] Furthermore, the step of obtaining a working status evaluation value of the central air conditioner based on the working status data of the central air conditioner includes: deploying several monitoring time points, and the working status data of the central air conditioner includes the air conditioning load and condensing temperature at each monitoring time point; obtaining an air conditioning load reference value and a condensing temperature reference value from the central air conditioning database; and obtaining a working status evaluation value of the central air conditioner through comprehensive analysis.

[0012] Furthermore, the step of obtaining the working environment evaluation value of the central air conditioner based on the working environment data of the central air conditioner includes: the working environment data of the central air conditioner includes the working environment temperature, working environment humidity and wind speed; obtaining the reference working environment temperature, reference working environment humidity and critical wind speed from the central air conditioner database; and obtaining the working environment evaluation value of the central air conditioner through comprehensive analysis.

[0013] Furthermore, based on the initial calibration index of the air supply volume of the central air conditioner, the step of processing to obtain the preset air volume of the waste heat recovery control system includes: matching the initial calibration index of the air supply volume of the central air conditioner with the preset air volume of the waste heat recovery control system corresponding to each initial calibration index interval of the air supply volume stored in the central air conditioner database to obtain the initial preset air volume of the waste heat recovery control system; and adjusting the preset air volume according to the initial preset air volume of the waste heat recovery control system.

[0014] Furthermore, based on the working status data of the waste heat recovery control system, the step of analyzing and obtaining the air supply volume adjustment parameters of the waste heat recovery control system includes: the working status data of the waste heat recovery control system includes the heat exchanger inlet temperature and the heat exchanger outlet temperature; obtaining the heat exchanger inlet temperature threshold, the heat exchanger outlet temperature threshold and the critical inlet and outlet temperature difference from the central air conditioning database; and comprehensively analyzing to obtain the air supply volume adjustment parameters of the waste heat recovery control system.

[0015] Furthermore, the step of adjusting the preset air volume of the waste heat recovery control system according to the air supply volume adjustment parameter of the waste heat recovery control system includes: matching the air supply volume adjustment parameter of the waste heat recovery control system with the air supply volume adjustment value corresponding to each air supply volume adjustment parameter interval stored in the central air-conditioning database to obtain the air supply volume adjustment value of the waste heat recovery control system; adjusting the preset air volume according to the air supply volume adjustment value of the waste heat recovery control system.

[0016] Furthermore, the initial calibration index of the central air-conditioning air supply volume is calculated as follows:

[0017] ;

[0018] Where, represents the initial calibration index of the air supply volume of the central air conditioner, μ represents the weight factor of the initial calibration index of the air supply volume corresponding to the preset working state, and λ represents the weight factor of the initial calibration index of the air supply volume corresponding to the preset working environment. Indicates the working status evaluation value of the central air conditioner. Indicates the working environment assessment value of the central air conditioner.

[0019] Furthermore, the specific calculation formula for the air supply volume adjustment parameter of the waste heat recovery control system is:

[0020] ;

[0021] In the formula Indicates the air supply volume adjustment parameter. Indicates the weight factor of the air supply volume adjustment parameter corresponding to the heat exchanger inlet temperature, Indicates the weight factor of the air supply volume adjustment parameter corresponding to the heat exchanger outlet temperature, Indicates the weight factor of the air supply adjustment parameter corresponding to the inlet and outlet temperature difference of the heat exchanger, Indicates the heat exchanger inlet temperature, Indicates the heat exchanger inlet temperature threshold, represents the heat exchanger outlet temperature, Indicates the heat exchanger outlet temperature threshold, Represents the critical inlet and outlet temperature difference.

[0022] Furthermore, a waste heat recovery control method based on a central air conditioner is characterized in that: the specific steps include: obtaining the working status data of the central air conditioner and the waste heat recovery control system, and collecting the working environment data of the central air conditioner; based on the working status data and working environment data of the central air conditioner, comprehensively analyzing to obtain the initial calibration index of the air supply volume of the central air conditioner, and processing to obtain the preset air volume of the waste heat recovery control system based on the initial calibration index of the air supply volume of the central air conditioner; based on the working status data of the waste heat recovery control system, analyzing to obtain the air supply volume adjustment parameter of the waste heat recovery control system, and adjusting the preset air volume of the waste heat recovery control system according to the air supply volume adjustment parameter of the waste heat recovery control system.

[0023] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0024] 1. The present invention provides a waste heat recovery control system and method based on a central air conditioner, obtains a preset air volume according to the working state and working environment of the central air conditioner, and then adjusts the preset air volume according to the working state of the waste heat recovery control system, thereby achieving precise adjustment of the preset air volume of the waste heat recovery control system, thereby improving the waste heat recovery efficiency.

[0025] 2. The present invention obtains accurate initial calibration indicators for air supply volume by comprehensively analyzing the working status data and working environment data of the central air conditioner, thereby processing a reasonable preset air volume for the waste heat recovery control system, thereby achieving the optimization of the central air conditioner's operating performance while promoting efficient utilization and conservation of energy.

[0026] 3. The present invention dynamically adjusts the preset air volume according to the air supply adjustment parameter, so that the system can flexibly adjust the air volume according to the actual operating conditions, effectively avoiding the energy waste or insufficient recovery problems that may exist under the traditional fixed air volume setting, and ensuring the efficiency and stability of the waste heat recovery process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a waste heat recovery control system based on central air conditioning provided in an embodiment of the present application.

[0028] Figure 2 This is a diagram showing changes in air supply volume adjustment parameters for a waste heat recovery control system based on central air conditioning provided in an embodiment of the present application.

[0029] Figure 3 A flow chart of a waste heat recovery control method based on central air conditioning provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] The embodiments of the present application provide a waste heat recovery control system and method based on a central air conditioner, thereby solving the problem in the prior art that the central air conditioner is unable to accurately control the waste heat recovery system according to the real-time operating conditions during waste heat recovery control, resulting in efficiency loss in the heat transfer and energy conversion process, and the waste heat recovery efficiency of the central air conditioner is limited. By obtaining a preset air volume according to the working state and working environment of the central air conditioner, and then adjusting the preset air volume according to the working state of the waste heat recovery control system, efficient and precise control of the waste heat recovery system is achieved.

[0031] The technical solution in the embodiments of the present application is to solve the problem in the above-mentioned prior art that the central air conditioner cannot accurately control the waste heat recovery system according to the real-time operating conditions when performing waste heat recovery control, resulting in efficiency loss in the heat transfer and energy conversion process, and the waste heat recovery efficiency of the central air conditioner is limited. The overall concept is as follows:

[0032] By acquiring the working status data of the central air-conditioning and the waste heat recovery control system, and collecting the working environment data of the central air-conditioning; based on the working status data and working environment data of the central air-conditioning, a comprehensive analysis is performed to obtain the initial calibration index of the central air-conditioning's air supply volume, and based on the initial calibration index of the central air-conditioning's air supply volume, the preset air volume of the waste heat recovery control system is obtained through processing; based on the working status data of the waste heat recovery control system, the air supply volume adjustment parameters of the waste heat recovery control system are analyzed, and the preset air volume of the waste heat recovery control system is adjusted according to the air supply volume adjustment parameters of the waste heat recovery control system, thereby achieving precise adjustment of the preset air volume of the waste heat recovery control system.

[0033] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0034] like Figure 1 As shown, it is a structural schematic diagram of the waste heat recovery control system based on the central air-conditioning provided in the embodiment of the present application. The waste heat recovery control system based on the central air-conditioning provided in the embodiment of the present application includes: a data acquisition module, an air supply volume initial calibration module, an air supply volume feedback adjustment module and a central air-conditioning database; wherein, the data acquisition module is used to obtain the working status data of the central air-conditioning and the waste heat recovery control system, and collect the working environment data of the central air-conditioning; the air supply volume initial calibration module is used to comprehensively analyze the working status data and working environment data of the central air-conditioning to obtain the initial calibration index of the air supply volume of the central air-conditioning, and process the preset air volume of the waste heat recovery control system according to the initial calibration index of the air supply volume of the central air-conditioning; the air supply volume feedback adjustment module is used to analyze the working status data of the waste heat recovery control system to obtain the air supply volume adjustment parameters of the waste heat recovery control system, and adjust the preset air volume of the waste heat recovery control system according to the air supply volume adjustment parameters of the waste heat recovery control system.

[0035] In this embodiment, the initial calibration index of the central air-conditioning supply air volume is based on the precise calculation of the current working environment and the operating status of the central air-conditioning, aiming to ensure the comfort of the indoor environment and maximize energy efficiency. The preset air volume is set for the waste heat recovery control system based on the initial calibration index of the air volume, ensuring that the waste heat recovery system can effectively recover and utilize the waste heat according to the actual amount of waste heat generated. During the operation of the waste heat recovery control system, its working status data is continuously monitored, and the air volume adjustment parameters are analyzed to reflect the actual demand of the system for air volume adjustment. Through precise data analysis and dynamic adjustment, the coordinated optimization of the central air-conditioning and waste heat recovery control system is achieved, which improves the overall energy efficiency and helps to reduce energy consumption and operating costs. Real-time monitoring and dynamic adjustment ensure that the system can maintain a stable operating state under various working conditions and reduce the possibility of failure. The air volume calibration of the central air-conditioning is based on the actual working environment data, which can more accurately meet the needs of the indoor environment and improve the comfort of users. The effective operation of the waste heat recovery control system maximizes the recovery and utilization of waste heat resources, reduces energy waste, and conforms to the concept of sustainable development.

[0036] In addition, the central air conditioning database is used to store relevant data of the waste heat recovery control system of the central air conditioning, including: air conditioning load reference value, condensing temperature reference value, reference working environment temperature, reference working environment humidity, allowable deviation working environment temperature, allowable deviation working environment humidity, critical wind speed, air supply volume adjustment value corresponding to each air supply volume adjustment parameter interval and preset air volume of the waste heat recovery control system corresponding to each air supply volume initial calibration index interval, etc. The central air conditioning database can be obtained by utilizing existing public databases or existing systems, such as advanced energy management systems (which can integrate the waste heat recovery function of central air conditioning to achieve comprehensive monitoring and management of energy usage of the entire building or industrial facility), high-efficiency heat exchanger systems (the core component of the waste heat recovery system, which uses efficient heat exchange technology to transfer the waste heat generated by the central air conditioning during the cooling or heating process to the medium that needs to be heated) or an intelligent control system that monitors and controls the operation of the waste heat recovery system, or through the equipment measurement and control module to collect real-time status information and operation data of each device in the central air conditioning system.

[0037] Furthermore, based on the working status data and working environment data of the central air conditioner, a comprehensive analysis is conducted to obtain the initial calibration index of the air supply volume of the central air conditioner, including: obtaining the working status evaluation value of the central air conditioner based on the working status data of the central air conditioner; obtaining the working environment evaluation value of the central air conditioner based on the working environment data of the central air conditioner; and obtaining the initial calibration index of the air supply volume based on a comprehensive analysis of the working status evaluation value of the central air conditioner and the working environment evaluation value of the central air conditioner.

[0038] In this embodiment, the operating status data reflects the internal operating conditions of the central air conditioning system, directly determining whether the system can operate efficiently and stably. The operating environment data describes the external environmental conditions within the central air conditioning system, significantly impacting the central air conditioning system's air supply volume requirements, cooling or heating performance, and energy consumption. There is a close correlation between the operating status data and the operating environment data. The operating status data needs to be adjusted based on the environmental data to ensure that the air conditioning system can adapt to environmental changes and provide the required comfort. For example, in high-temperature and high-humidity environments, the air conditioning system's air speed and cooling capacity may need to be increased to maintain comfortable indoor temperature and humidity levels. In low-temperature and dry environments, the air conditioning system's operating mode and air speed may need to be adjusted to accommodate environmental changes. By comprehensively analyzing the operating status data and the operating environment data, an initial calibration index for the central air conditioning system's air supply volume can be accurately obtained. This index is calculated based on the current system operating status and external environmental conditions, ensuring that the central air conditioning system can meet indoor environmental requirements while maintaining optimal energy efficiency and stability.

[0039] Furthermore, the step of obtaining a working status evaluation value of the central air conditioner based on the working status data of the central air conditioner includes: deploying several monitoring time points, and the working status data of the central air conditioner includes the air conditioning load and condensing temperature at each monitoring time point; obtaining an air conditioning load reference value and a condensing temperature reference value from the central air conditioning database; and obtaining a working status evaluation value of the central air conditioner through comprehensive analysis.

[0040] In this embodiment, air conditioning load refers to the amount of heat required to be removed or added by the air conditioning system to maintain indoor parameters such as the set temperature, humidity, and air quality. This load can be calculated using professional load calculation software or by multiplying the indoor and outdoor temperature difference by the area of ​​the wall or window and the heat transfer coefficient. The heat transfer coefficient can be directly obtained from the central air conditioning database. The air conditioning load reflects the amount of ambient heat load the air conditioning system needs to handle. The condensing temperature refers to the temperature at which the refrigerant transitions from gas to liquid in the condenser. This value is typically measured directly by a temperature sensor installed on the condenser. The condensing temperature directly affects the cooling efficiency and energy consumption of the refrigeration system. When the average air conditioning load of the central air conditioner is greater than or equal to the air conditioning load reference value, the system may be operating at high load. When the average condensing temperature of the central air conditioner is greater than or equal to the condensing temperature reference value, the system may be experiencing heat dissipation issues, and the central air conditioner's operating status assessment value will increase accordingly, affecting the initial air supply volume indicator and thus changing the air supply volume. There is a close correlation between the air conditioning load and the condensing temperature. When the air conditioning load increases, the system needs to remove more heat, which typically increases the refrigerant flow in the condenser, potentially raising the condensing temperature. Conversely, when the air conditioning load decreases, the condensing temperature may also decrease accordingly. By comprehensively analyzing the air conditioning load and condensing temperature data at each monitoring time point, the operating status of the central air conditioning system can be accurately assessed. This helps operation and maintenance personnel understand the system's actual operating efficiency, energy consumption, and whether there are potential problems. It also accurately assesses the system's operating status and efficiency, providing strong support for optimized system operation.

[0041] Furthermore, the step of obtaining the working environment evaluation value of the central air conditioner based on the working environment data of the central air conditioner includes: the working environment data of the central air conditioner includes the working environment temperature, working environment humidity and wind speed; obtaining the reference working environment temperature, reference working environment humidity and critical wind speed from the central air conditioner database; and obtaining the working environment evaluation value of the central air conditioner through comprehensive analysis.

[0042] In this embodiment, the working environment temperature is typically measured and acquired in real time using temperature sensors installed in the working environment. These sensors can be analog or digital and can accurately convert temperature into an electrical signal and transmit it to a control system or monitoring device. The working environment humidity can be measured using a humidity sensor that can sense the water vapor content in the air and convert it into a measurable electrical signal that is transmitted to the control system or monitoring device. The wind speed can be measured using an anemometer or wind speed sensor that can sense the speed of air flow and convert it into a corresponding electrical signal or digital signal. By reading these signals, the current wind speed value can be obtained. There are certain interactions and correlations between the working environment temperature, humidity, and wind speed. For example, a high temperature and high humidity environment may increase the load of the air conditioning system because the system needs to remove more heat and moisture. At the same time, changes in wind speed can also affect the heat exchange efficiency of the air, thereby affecting the performance of the air conditioning system. By using the working environment temperature, humidity, and wind speed to jointly determine the operating environment of the air conditioning system, it has a significant impact on the system's cooling and heating efficiency, energy consumption, and indoor comfort. By comprehensively analyzing the working environment temperature, humidity, and wind speed values, the working environment conditions of the central air-conditioning system can be accurately assessed. This analysis helps operation and maintenance personnel understand the external challenges currently facing the system, such as increased load caused by high temperature and humidity, and decreased heat exchange efficiency caused by insufficient wind speed. Based on the working environment assessment values ​​of the central air-conditioning system, operation and maintenance personnel can formulate corresponding optimization measures, such as adjusting system setting parameters, adding auxiliary heat dissipation equipment, optimizing air flow paths, etc., to improve the system's operating efficiency and energy-saving effects. It also provides an important basis for the system's preventive maintenance and troubleshooting.

[0043] Furthermore, based on the initial calibration index of the air supply volume of the central air conditioner, the step of processing to obtain the preset air volume of the waste heat recovery control system includes: matching the initial calibration index of the air supply volume of the central air conditioner with the preset air volume of the waste heat recovery control system corresponding to each initial calibration index interval of the air supply volume stored in the central air conditioner database to obtain the initial preset air volume of the waste heat recovery control system; and adjusting the preset air volume according to the initial preset air volume of the waste heat recovery control system.

[0044] In this embodiment, when matching the initial calibration index of the air supply volume of the central air conditioner with the preset air volume of the waste heat recovery control system corresponding to each initial calibration index interval of the air supply volume stored in the central air conditioner database, all relevant initial calibration index intervals of the air supply volume and their corresponding preset air volume values ​​of the waste heat recovery control system can be first extracted from the central air conditioner database, including the range of the initial calibration index interval of the air supply volume and the preset air volume value corresponding to each interval. The collected data is sorted according to the size of the air supply volume, and it is ensured that each interval range does not overlap, so as to facilitate subsequent graphical representation. In order to intuitively demonstrate the relationship between the initial calibration index of the air supply volume of the central air conditioner and the preset air volume of the waste heat recovery control system, a curve diagram of the relationship between the initial calibration index of the air supply volume of the central air conditioner and the preset air volume of the waste heat recovery control system is drawn, with the horizontal axis representing the air supply volume of the central air conditioner and the vertical axis representing the preset air volume of the waste heat recovery control system. During matching, the initial calibration index value of the air supply volume of the current central air conditioner is clarified, the initial calibration index value of the air supply volume is positioned on the curve chart, and the closest interval range or data point is found. Based on the positioning result, the preset air volume value of the waste heat recovery control system corresponding to the interval range or data point is read as the initial preset air volume.

[0045] Furthermore, based on the working status data of the waste heat recovery control system, the step of analyzing and obtaining the air supply volume adjustment parameters of the waste heat recovery control system includes: the working status data of the waste heat recovery control system includes the heat exchanger inlet temperature and the heat exchanger outlet temperature; obtaining the heat exchanger inlet temperature threshold, the heat exchanger outlet temperature threshold and the critical inlet and outlet temperature difference from the central air conditioning database; and comprehensively analyzing to obtain the air supply volume adjustment parameters of the waste heat recovery control system.

[0046] In this embodiment, the heat exchanger inlet temperature refers to the temperature of the fluid (typically a heat source such as exhaust gas or hot water) before entering the heat exchanger. It reflects the initial thermal energy state of the heat source and is the starting point of the heat exchange process. The heat exchanger outlet temperature refers to the temperature of the fluid (which has now become a cooling medium or a heat source that has released some thermal energy) when it leaves the heat exchanger after passing through the heat exchanger. It reflects the thermal energy state of the fluid after the heat exchange process. The heat exchanger inlet and outlet temperatures are typically measured by temperature sensors installed at the inlet and outlet of the heat exchanger. The temperature sensors can sense the fluid temperature in real time and convert it into an electrical or digital signal for the control system to read and process. The difference between the heat exchanger inlet and outlet temperatures (i.e., the temperature difference) is an indicator of the degree of heat transfer during the heat exchange process. A larger temperature difference generally means more heat is transferred during the heat exchange process; conversely, a smaller temperature difference generally means less heat is transferred during the heat exchange process. By monitoring these two temperatures, the performance of the waste heat recovery system can be evaluated and whether parameters such as the air supply volume need to be adjusted to optimize the heat exchange effect. For example, if the outlet temperature is too high, it may indicate insufficient air supply, resulting in inadequate heat exchange; while if the inlet temperature is too low, it may indicate insufficient heat source or other system issues. Comprehensive analysis of the heat exchanger inlet and outlet temperatures can accurately determine the air supply adjustment parameters of the waste heat recovery control system, enabling precise adjustment of the air supply, thereby optimizing the overall system performance and energy recovery rate.

[0047] Furthermore, the step of adjusting the preset air volume of the waste heat recovery control system according to the air supply volume adjustment parameter of the waste heat recovery control system includes: matching the air supply volume adjustment parameter of the waste heat recovery control system with the air supply volume adjustment value corresponding to each air supply volume adjustment parameter interval stored in the central air-conditioning database to obtain the air supply volume adjustment value of the waste heat recovery control system; adjusting the preset air volume according to the air supply volume adjustment value of the waste heat recovery control system.

[0048] In this embodiment, when matching the air supply volume adjustment parameter of the waste heat recovery control system with the air supply volume adjustment value corresponding to each air supply volume adjustment parameter interval stored in the central air conditioning database, all relevant air supply volume adjustment parameter intervals and their corresponding air supply volume adjustment values ​​can be first extracted from the central air conditioning database, including multiple air supply volume adjustment parameter interval ranges and the air supply volume adjustment value corresponding to each interval. The collected data is sorted according to the size of the air supply volume adjustment parameter, and it is ensured that each interval range does not overlap, so as to facilitate subsequent graphical representation. In order to intuitively demonstrate the relationship between the air supply volume adjustment parameter of the waste heat recovery control system and the air supply volume adjustment value of the waste heat recovery control system, a relationship curve diagram of the air supply volume adjustment parameter of the waste heat recovery control system and the air supply volume adjustment value of the waste heat recovery control system is drawn, with the horizontal axis representing the air supply volume adjustment parameter of the waste heat recovery control system and the vertical axis representing the corresponding air supply volume adjustment value. During matching, the air supply volume adjustment parameter value is positioned on the curve graph to find the closest interval range or data point. Based on the positioning result, the air supply volume adjustment value corresponding to the interval range or data point is read. Based on the obtained air supply volume adjustment value, the preset air volume of the waste heat recovery control system is adjusted accordingly to increase or decrease in order to optimize the heat exchange efficiency and energy recovery rate of the system.

[0049] Furthermore, the initial calibration index of the central air-conditioning air supply volume is calculated as follows:

[0050] ;

[0051] Where, represents the initial calibration index of the air supply volume of the central air conditioner, μ represents the weight factor of the initial calibration index of the air supply volume corresponding to the preset working state, and λ represents the weight factor of the initial calibration index of the air supply volume corresponding to the preset working environment. Indicates the working status evaluation value of the central air conditioner. Indicates the working environment assessment value of the central air conditioner.

[0052] In this embodiment, the working state of the central air conditioner directly affects its air volume demand, and the working environment determines that the air conditioner needs to adjust the air volume to adapt to external conditions. By comprehensively considering the working state and working environment of the central air conditioner, the initial air supply volume calibration value of the central air conditioner can be accurately calculated to ensure that the system can maintain efficient operation under different working conditions. Accurate initial air supply volume adjustment is performed according to different working states and environmental conditions, so that the air conditioner can achieve optimal performance and comfort in actual operation. The weight factor of the initial calibration index of the air supply volume corresponding to the working state represents the numerical value of the degree of influence of the working state of the central air conditioner on the initial calibration index of the air supply volume of the central air conditioner. When used, the weight factor of the initial calibration index of the air supply volume corresponding to the working state can be directly obtained from the central air conditioner database. The corresponding relationship can be a preset mapping relationship. For example, the working state evaluation value of the central air conditioner and the weight factor of the initial calibration index of the air supply volume corresponding to the working state preset in the central air conditioner database form a mapping set. The working state evaluation value of the central air conditioner is input into the mapping set to obtain the weight factor of the initial calibration index of the air supply volume corresponding to the working state. The mapping relationship can be one-to-one or many-to-one. In this example, its value range is [0,1]. The larger the working state evaluation value of the central air conditioner is, the larger the initial calibration index of the air supply volume of the central air conditioner is. The weight factor of the initial calibration index of the air volume supply corresponding to the working environment represents the numerical value of the degree of influence of the working environment of the central air conditioner on the initial calibration index of the air volume supply of the central air conditioner. When used, the weight factor of the initial calibration index of the air volume supply corresponding to the working environment can be directly obtained from the central air conditioner database. The corresponding relationship can be a preset mapping relationship. For example, the working environment evaluation value of the central air conditioner and the weight factor of the initial calibration index of the air volume supply corresponding to the working environment preset in the central air conditioner database form a mapping set. The real-time working environment evaluation value of the central air conditioner is input into the mapping set to obtain the weight factor of the initial calibration index of the air volume supply corresponding to the working environment. The mapping relationship can be one-to-one or many-to-one. In this example, the value range is [0,1]. The larger the working environment evaluation value of the central air conditioner is, the larger the initial calibration index of the air volume supply of the central air conditioner is.

[0053] Among them, the working status evaluation value of the central air conditioner is calculated as follows:

[0054] ;

[0055] ;

[0056] ;

[0057] Where, Indicates the working status evaluation value of the central air conditioner. Indicates the weight factor of the working status evaluation value corresponding to the air conditioning load, Indicates the weight factor of the working status evaluation value corresponding to the condensing temperature, Indicates the average air conditioning load of the central air conditioner. Indicates the reference value of air conditioning load, Indicates the average condensing temperature of the central air conditioner. Indicates the condensation temperature reference value, i indicates the number of each monitoring time point, i=1,2,3,...,n, n indicates the total number of monitoring time points, represents the air conditioning load at the i-th detection time point, represents the condensation temperature at the i-th detection time point.

[0058] The working state evaluation value weight factor corresponding to the air-conditioning load represents the numerical value of the degree of influence of the air-conditioning load of the central air-conditioning on the working state evaluation value of the central air-conditioning. When used, the working state evaluation value weight factor corresponding to the air-conditioning load can be directly obtained from the central air-conditioning database. The corresponding relationship can be a preset mapping relationship. For example, the average air-conditioning load of the central air-conditioning and the working state evaluation value weight factor corresponding to the air-conditioning load preset in the central air-conditioning database form a mapping set. The average air-conditioning load of the central air-conditioning is input into the mapping set to obtain the working state evaluation value weight factor corresponding to the air-conditioning load. The mapping relationship can be a one-to-one correspondence or a many-to-one relationship. In this example, the value range is [0,1]. The ratio of the average air-conditioning load of the central air-conditioning to the air-conditioning load reference value can be used to evaluate the working state of the central air-conditioning from the perspective of the air-conditioning load. The greater the average air-conditioning load of the central air-conditioning, the greater the working state evaluation value of the central air-conditioning. The working status evaluation value weight factor corresponding to the condensing temperature represents the numerical value of the degree of influence of the condensing temperature of the central air conditioner on the working status evaluation value of the central air conditioner. When used, the working status evaluation value weight factor corresponding to the condensing temperature can be directly obtained from the central air conditioner database. The corresponding relationship can be a preset mapping relationship. For example, the average condensing temperature of the central air conditioner and the working status evaluation value weight factor corresponding to the condensing temperature preset in the central air conditioner database form a mapping set. The average condensing temperature of the central air conditioner is input into the mapping set to obtain the working status evaluation value weight factor corresponding to the condensing temperature. The mapping relationship can be one-to-one or many-to-one. In this example, its value range is [0,1]. The ratio of the average condensing temperature of the central air conditioner to the condensing temperature reference value can be used to evaluate the working status of the central air conditioner from the perspective of the condensing temperature. The larger the average condensing temperature of the central air conditioner, the larger the working status evaluation value of the central air conditioner.

[0059] Among them, the working environment assessment value of the central air conditioner is calculated as follows:

[0060] ;

[0061] Where, Indicates the working environment evaluation value of the central air conditioner. Indicates the weight factor of the working environment assessment value corresponding to the working environment temperature, Indicates the weight factor of the working environment assessment value corresponding to the working environment humidity, Indicates the weight factor of the working environment assessment value corresponding to the wind speed, Indicates the working environment temperature value of the central air conditioner. Indicates the reference working environment temperature value, Indicates the working environment humidity value of central air conditioning. Indicates the reference working environment humidity value, Indicates the wind speed of the central air conditioner. Indicates the critical wind speed.

[0062] The working environment evaluation value weight factor corresponding to the working environment temperature represents the numerical value of the degree of influence of the working environment temperature of the central air conditioner on the working environment evaluation value of the central air conditioner. When used, the working environment evaluation value weight factor corresponding to the working environment temperature of the central air conditioner can be directly obtained from the central air conditioner database. The corresponding relationship can be a pre-set mapping relationship. For example, the working environment temperature value of the central air conditioner and the working environment evaluation value weight factor corresponding to the working environment temperature preset in the central air conditioner database form a mapping set. The working environment temperature value of the central air conditioner is input into the mapping set to obtain the working environment evaluation value weight factor corresponding to the working environment temperature. The mapping relationship can be one-to-one or many-to-one. In the example, its value range is [0,1]. The ratio of the working environment temperature value of the central air conditioner to the reference working environment temperature value can be used to evaluate the working environment of the central air conditioner from the perspective of the working environment temperature. The larger the working environment temperature value of the central air conditioner, the greater the working environment evaluation value of the central air conditioner; the working environment evaluation value weight factor corresponding to the working environment humidity represents the degree of influence of the working environment humidity of the central air conditioner on the working environment evaluation value of the central air conditioner. When used, the working environment evaluation value weight factor corresponding to the working environment humidity of the central air conditioner can be directly obtained from the central air conditioner database. The corresponding relationship can be a pre-set mapping relationship. For example, the working environment humidity value of the central air conditioner and the central air conditioner data The working environment evaluation value weight factors corresponding to the working environment humidity preset in the library form a mapping set. The working environment humidity value of the central air conditioner is input into the mapping set to obtain the working environment evaluation value weight factor corresponding to the working environment humidity. The mapping relationship can be one-to-one or many-to-one. In this example, its value range is [0,1]. The ratio of the working environment humidity value of the central air conditioner to the reference working environment humidity value can evaluate the working environment of the central air conditioner from the perspective of working environment humidity. The greater the working environment humidity value of the central air conditioner, the greater the working environment evaluation value of the central air conditioner; the working environment evaluation value weight factor corresponding to the wind speed indicates the degree of influence of the wind speed of the central air conditioner on the working environment evaluation value of the central air conditioner. When used, the working environment evaluation value weight factor corresponding to the wind speed of the central air conditioner can be directly obtained from the central air conditioner database. The corresponding relationship can be a preset mapping relationship. For example, the wind speed of the central air conditioner and the working environment evaluation value weight factor corresponding to the wind speed preset in the central air conditioner database form a mapping set. The wind speed of the central air conditioner is input into the mapping set to obtain the working environment evaluation value weight factor corresponding to the wind speed. The mapping relationship can be one-to-one or many-to-one. In this example, its value range is [0,1]. The ratio of the critical wind speed to the wind speed of the central air conditioner can evaluate the working environment of the central air conditioner from the perspective of wind speed. The smaller the wind speed of the central air conditioner, the greater the working environment evaluation value of the central air conditioner.

[0063] Furthermore, the specific calculation formula for the air supply volume adjustment parameter of the waste heat recovery control system is:

[0064] ;

[0065] In the formula Indicates the air supply volume adjustment parameter. Indicates the weight factor of the air supply volume adjustment parameter corresponding to the heat exchanger inlet temperature, Indicates the weight factor of the air supply volume adjustment parameter corresponding to the heat exchanger outlet temperature, Indicates the weight factor of the air supply adjustment parameter corresponding to the inlet and outlet temperature difference of the heat exchanger, Indicates the heat exchanger inlet temperature, Indicates the heat exchanger inlet temperature threshold, represents the heat exchanger outlet temperature, Indicates the heat exchanger outlet temperature threshold, Represents the critical inlet and outlet temperature difference.

[0066] In this embodiment, the air supply volume adjustment parameter weight factor corresponding to the heat exchanger inlet temperature represents the numerical value of the influence degree of the heat exchanger inlet temperature on the air supply volume adjustment parameter of the waste heat recovery control system. When used, the air supply volume adjustment parameter weight factor corresponding to the heat exchanger inlet temperature can be directly obtained from the central air-conditioning database. The corresponding relationship can be a preset mapping relationship. For example, the heat exchanger inlet temperature and the air supply volume adjustment parameter weight factor corresponding to the heat exchanger inlet temperature preset in the central air-conditioning database form a mapping set. The heat exchanger inlet temperature is input into the mapping set to obtain the air supply volume adjustment parameter weight factor corresponding to the heat exchanger inlet temperature. The mapping relationship can be one-to-one or many-to-one. In this example, its value range is [0,1]. The ratio of the heat exchanger inlet temperature to the heat exchanger inlet temperature threshold can be used to evaluate the air supply volume adjustment parameter of the waste heat recovery control system from the perspective of the heat exchanger inlet temperature. The larger the heat exchanger inlet temperature, the lower the air supply volume adjustment parameter of the waste heat recovery control system. The larger the amount; the air supply volume adjustment parameter weight factor corresponding to the heat exchanger outlet temperature represents the numerical value of the influence degree of the heat exchanger outlet temperature on the air supply volume adjustment parameter of the waste heat recovery control system. When used, the air supply volume adjustment parameter weight factor corresponding to the heat exchanger outlet temperature can be directly obtained from the central air conditioning database. The corresponding relationship can be a preset mapping relationship. For example, the heat exchanger outlet temperature and the air supply volume adjustment parameter weight factor corresponding to the heat exchanger outlet temperature preset in the central air conditioning database form a mapping set. The heat exchanger outlet temperature is input into the mapping set to obtain the air supply volume adjustment parameter weight factor corresponding to the heat exchanger outlet temperature. The mapping relationship can be one-to-one or many-to-one. In this example, its value range is [0,1]. The ratio of the heat exchanger outlet temperature to the heat exchanger outlet temperature threshold can be used to evaluate the air supply volume adjustment parameter of the waste heat recovery control system from the perspective of the heat exchanger outlet temperature. The larger the heat exchanger outlet temperature, the larger the air supply volume adjustment parameter of the waste heat recovery control system.The air supply volume adjustment parameter weight factor corresponding to the heat exchanger inlet and outlet temperature difference is a numerical value indicating the degree of influence of the heat exchanger inlet and outlet temperature difference on the air supply volume adjustment parameter of the waste heat recovery control system. When used, the air supply volume adjustment parameter weight factor corresponding to the heat exchanger inlet and outlet temperature difference can be directly obtained from the central air conditioning database. The corresponding relationship can be a pre-set mapping relationship. For example, the heat exchanger inlet and outlet temperature difference and the air supply volume adjustment parameter weight factor corresponding to the heat exchanger inlet and outlet temperature difference preset in the central air conditioning database form a mapping set, and the current heat exchanger inlet and outlet temperature difference is input into the mapping set. Obtain the weight factor for the air flow control parameter corresponding to the heat exchanger inlet and outlet temperature difference. The mapping relationship can be one-to-one or many-to-one. In this example, the value range is [0, 1]. The difference between the absolute values ​​of the heat exchanger inlet and outlet temperatures represents the current heat exchanger inlet and outlet temperature difference. The ratio of the current heat exchanger inlet and outlet temperature difference to the critical inlet and outlet temperature difference can be used to evaluate the air flow control parameter of the waste heat recovery control system from the perspective of the heat exchanger inlet and outlet temperature difference. The larger the current heat exchanger inlet and outlet temperature difference, the smaller the air flow control parameter of the waste heat recovery control system.

[0067] Furthermore, a waste heat recovery control method based on central air conditioning includes the following specific steps: obtaining the working status data of the central air conditioning and the waste heat recovery control system, and collecting the working environment data of the central air conditioning; comprehensively analyzing the working status data and working environment data of the central air conditioning to obtain the initial calibration index of the air supply volume of the central air conditioning, and processing the preset air volume of the waste heat recovery control system based on the initial calibration index of the air supply volume of the central air conditioning; analyzing the air supply volume adjustment parameters of the waste heat recovery control system based on the working status data of the waste heat recovery control system, and adjusting the preset air volume of the waste heat recovery control system based on the air supply volume adjustment parameters of the waste heat recovery control system.

[0068] The air flow control parameter weighting factors corresponding to the heat exchanger inlet temperature, the heat exchanger outlet temperature, and the heat exchanger inlet / outlet temperature difference are set to 0.4. The heat exchanger inlet temperature threshold is set to 35°C, the heat exchanger outlet temperature threshold is set to 30°C, and the critical inlet / outlet temperature difference is set to 5°C. The air flow control parameters for the waste heat recovery control system are calculated under different heat exchanger inlet and outlet temperatures. Table 1 shows the air flow control parameter data for the waste heat recovery control system based on central air conditioning.

[0069] Table 1 Air supply volume adjustment parameter data table based on waste heat recovery control system of central air conditioning

[0070] Serial number (℃) (℃) 1 34 29 0.754 2 35 30 0.762 3 36 31 0.769 4 37 32 0.777 5 38 33 0.784

[0071] like Figure 2 As shown in FIG, the air supply volume adjustment parameter variation diagram of the waste heat recovery control system based on the central air conditioner provided in the embodiment of the present application is Figure 2 It can be seen from Table 1 that the changes in the air supply volume adjustment parameters of the waste heat recovery control system are as follows: the weight factor of the air supply volume adjustment parameter corresponding to the heat exchanger inlet temperature, the weight factor of the air supply volume adjustment parameter corresponding to the heat exchanger outlet temperature, the weight factor of the air supply volume adjustment parameter corresponding to the heat exchanger inlet and outlet temperature difference, the heat exchanger inlet temperature threshold, the heat exchanger outlet temperature threshold, and the critical inlet and outlet temperature difference are the same, and the heat exchanger inlet temperature and the heat exchanger outlet temperature are different.

[0072] like Figure 3 As shown, it is a flow chart of a waste heat recovery control method based on a central air conditioner provided in an embodiment of the present application. The specific steps of the waste heat recovery control method based on a central air conditioner provided in an embodiment of the present application include: obtaining the working status data of the central air conditioner and the waste heat recovery control system, and collecting the working environment data of the central air conditioner; based on the working status data and working environment data of the central air conditioner, comprehensively analyzing to obtain the initial calibration index of the air supply volume of the central air conditioner, and based on the initial calibration index of the air supply volume of the central air conditioner, processing to obtain the preset air volume of the waste heat recovery control system; based on the working status data of the waste heat recovery control system, analyzing to obtain the air supply volume adjustment parameter of the waste heat recovery control system, and adjusting the preset air volume of the waste heat recovery control system according to the air supply volume adjustment parameter of the waste heat recovery control system.

[0073] To sum up, this embodiment collects the working environment data of the central air conditioner and the central air conditioner, and comprehensively analyzes to obtain the initial calibration index of the air supply volume of the central air conditioner, thereby obtaining the preset air volume of the waste heat recovery control system, and then analyzes the air supply volume adjustment parameters according to the working status data of the waste heat recovery control system, which effectively solves the problem in the existing technology that the central air conditioner cannot accurately control the waste heat recovery system according to the real-time operating conditions when performing waste heat recovery control, resulting in efficiency loss in the heat transfer and energy conversion process, and the waste heat recovery efficiency of the central air conditioner is limited.

[0074] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0075] The present invention is described with reference to flowcharts and / or block diagrams of systems, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0076] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0077] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0078] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0079] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A waste heat recovery control system based on central air conditioning, characterized in that: include: Data acquisition module, air supply volume initial calibration module, air supply volume feedback adjustment module and central air conditioning database; The data acquisition module is used to acquire the working status data of the central air conditioner and the waste heat recovery control system, and to collect the working environment data of the central air conditioner; The air supply volume initial calibration module is used to obtain an initial calibration index of the central air supply volume based on the working status data and working environment data of the central air conditioner through comprehensive analysis, and obtain a preset air volume of the waste heat recovery control system based on the initial calibration index of the central air supply volume; The air supply volume feedback adjustment module is used to analyze the operating status data of the waste heat recovery control system to obtain the air supply volume adjustment parameter of the waste heat recovery control system, and adjust the preset air volume of the waste heat recovery control system according to the air supply volume adjustment parameter of the waste heat recovery control system; The step of comprehensively analyzing the working status data and working environment data of the central air conditioner to obtain the initial calibration index of the air supply volume of the central air conditioner includes: Obtaining a working status evaluation value of the central air conditioner according to working status data of the central air conditioner; Obtaining a working environment evaluation value of the central air conditioner according to the working environment data of the central air conditioner; The initial calibration index of air supply volume is obtained by comprehensive analysis based on the working status evaluation value and the working environment evaluation value of the central air conditioner; Matching the initial calibration index of the air supply volume of the central air conditioner with the preset air volume of the waste heat recovery control system corresponding to each initial calibration index interval of the air supply volume stored in the central air conditioner database to obtain the initial preset air volume of the waste heat recovery control system; Adjusting the preset air volume according to the initial preset air volume of the waste heat recovery control system; The step of analyzing and obtaining the air supply volume adjustment parameter of the waste heat recovery control system based on the working status data of the waste heat recovery control system includes: The working status data of the waste heat recovery control system includes the heat exchanger inlet temperature and the heat exchanger outlet temperature; Obtain the heat exchanger inlet temperature threshold, heat exchanger outlet temperature threshold and critical inlet and outlet temperature difference from the central air conditioning database; Comprehensive analysis is conducted to obtain the air supply volume adjustment parameters of the waste heat recovery control system.

2. The waste heat recovery control system based on central air conditioning according to claim 1, characterized in that: The step of obtaining the working status evaluation value of the central air conditioner according to the working status data of the central air conditioner comprises: Deploy several monitoring time points, and the working status data of the central air conditioner includes the air conditioning load and condensing temperature at each monitoring time point; Obtain air conditioning load reference value and condensing temperature reference value from the central air conditioning database; Comprehensive analysis is performed to obtain the working status evaluation value of the central air conditioner.

3. The waste heat recovery control system based on central air conditioning according to claim 1, characterized in that: The step of obtaining the working environment evaluation value of the central air conditioner according to the working environment data of the central air conditioner comprises: The working environment data of the central air conditioner, including working environment temperature, working environment humidity and wind speed; Obtain reference working environment temperature, reference working environment humidity and critical wind speed from the central air conditioning database; Comprehensive analysis is conducted to obtain the working environment evaluation value of the central air conditioner.

4. The waste heat recovery control system based on central air conditioning according to claim 1, characterized in that: The step of adjusting the preset air volume of the waste heat recovery control system according to the air supply volume adjustment parameter of the waste heat recovery control system includes: Matching the air supply volume adjustment parameter of the waste heat recovery control system with the air supply volume adjustment value corresponding to each air supply volume adjustment parameter interval stored in the central air conditioning database to obtain the air supply volume adjustment value of the waste heat recovery control system; The preset air volume is adjusted according to the air supply volume adjustment value of the waste heat recovery control system.

5. The waste heat recovery control system based on central air conditioning according to claim 1, characterized in that: The specific calculation formula for the initial calibration index of the air supply volume of the central air conditioner is: In the formula, ξ represents the initial calibration index of the air supply volume of the central air conditioner, μ represents the weight factor of the initial calibration index of the air supply volume corresponding to the preset working state, λ represents the weight factor of the initial calibration index of the air supply volume corresponding to the preset working environment, ξ s represents the working status evaluation value of the central air conditioner, ξ e Indicates the working environment assessment value of the central air conditioner.

6. The waste heat recovery control system based on central air conditioning according to claim 1, characterized in that: The specific calculation formula for the air supply volume adjustment parameter of the waste heat recovery control system is: Where ζ represents the air supply volume adjustment parameter, γ1 represents the air supply volume adjustment parameter weight factor corresponding to the heat exchanger inlet temperature, γ2 represents the air supply volume adjustment parameter weight factor corresponding to the heat exchanger outlet temperature, γ3 represents the air supply volume adjustment parameter weight factor corresponding to the heat exchanger inlet and outlet temperature difference, I1 represents the heat exchanger inlet temperature, I0 represents the heat exchanger inlet temperature threshold, O1 represents the heat exchanger outlet temperature, O0 represents the heat exchanger outlet temperature threshold, and D0 represents the critical inlet and outlet temperature difference.

7. A waste heat recovery control method based on a central air conditioner, applied to a waste heat recovery control system based on a central air conditioner according to any one of claims 1 to 6, characterized in that :Specific steps include: Obtain the working status data of the central air-conditioning and waste heat recovery control system, and collect the working environment data of the central air-conditioning; Based on the working status data and working environment data of the central air conditioner, a comprehensive analysis is performed to obtain the initial calibration index of the central air conditioner's air supply volume. Based on the initial calibration index of the central air conditioner's air supply volume, the preset air volume of the waste heat recovery control system is obtained; According to the working status data of the waste heat recovery control system, the air supply volume adjustment parameter of the waste heat recovery control system is analyzed and obtained, and the preset air volume of the waste heat recovery control system is adjusted according to the air supply volume adjustment parameter of the waste heat recovery control system.

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