Control management system for combined air conditioning unit

Abstract

The invention relates to the technical field of control and management of energy-saving air conditioners, and discloses a control and management system for a combined air conditioning unit, which is characterized in that data is acquired through a data acquisition module, preprocessing and feature extraction are performed on the acquired data through a feature extraction module, and the operation condition of the unit is judged through an operation monitoring module. The energy-saving control module is used for generating an optimization strategy and adjusting unit operation parameters, the energy recovery module is used for recovering cold or heat in waste air and monitoring an energy recovery result in real time, the energy consumption evaluation module is used for evaluating an energy consumption result, and the visualization module is used for displaying the operation condition, the energy-saving strategy, the energy recovery result and the energy consumption evaluation result in real time. And the information is uploaded to mobile equipment in real time. Through the multi-dimensional energy-saving control, efficient energy recovery, management process visualization and multi-module cooperative working method, the energy consumption of the air conditioning unit is remarkably reduced, the operation efficiency is improved, and the method has wide application prospects.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of control management of energy-saving air conditioners, and particularly relates to a control management system for a combined air conditioning unit. BACKGROUND

[0002] In a conventional air conditioning control system, simple refrigeration or heating control is usually performed according to indoor and outdoor temperatures, and there is a lack of fine management of different seasons and working conditions, and the energy cannot be fully recycled, resulting in an increase in energy consumption.

[0003] In the existing air conditioning control system, waste air is usually directly discharged, resulting in waste of the cold or heat in the waste air and an increase in environmental load. In addition, some existing energy recovery equipment lacks real-time monitoring and evaluation of the energy recovery process, and cannot accurately measure the effect of energy recovery.

[0004] In a conventional air conditioning control system, energy consumption evaluation is usually based only on the consumption of cold, heat or electricity, and lacks comprehensive evaluation of overall energy consumption. In addition, the conventional system lacks an intuitive visual interface, and it is difficult for management personnel to real-time understand the running state and energy consumption of the system, resulting in the inability to timely discover and solve energy consumption problems.

[0005] The conventional air conditioning control system usually adopts a single control logic, lacks modular design and collaborative optimization capability, and such a system is often difficult to achieve comprehensive monitoring of the environment and running state, and the system has low running efficiency when facing complex running conditions. SUMMARY

[0006] The present application provides a control management system for a combined air conditioning unit to solve the existing technical problems.

[0007] To solve the above technical problems, the present application provides the following technical solutions: The present application provides a control management system for a combined air conditioning unit, comprising: a data acquisition module for acquiring user preset parameters and real-time monitoring of environmental data and running data during unit operation; a feature extraction module for pre-processing and feature extraction of the environmental data and running data to obtain environmental features, running features and energy consumption features; a running monitoring module for determining the unit running condition according to the environmental features and generating a corresponding energy-saving mode; an energy-saving control module for generating a corresponding energy-saving strategy according to the energy-saving mode and environmental features, and adjusting the running parameters of the air conditioning unit; an energy recovery module for energy recovery and real-time monitoring of energy recovery results; An energy consumption evaluation module is configured to evaluate the comprehensive energy consumption according to the energy consumption characteristics and the energy recovery result, and obtain an energy consumption evaluation result. A visualization module is configured to display the unit operation condition, the energy-saving strategy, the energy recovery result and the energy consumption evaluation result in real time, and upload the results to a mobile device in real time.

[0008] Further, the data acquisition module comprises a user action acquisition unit, an environment data acquisition unit and an operation data acquisition unit. The user action acquisition unit is configured to acquire user preset parameters through an electronic touch screen and a wireless remote control device, wherein the user preset parameters comprise a preset operation mode, a preset temperature, a preset air volume and a preset operation time. The environment data acquisition unit is configured to acquire environment data through multi-modal sensors, wherein the multi-modal sensors comprise a temperature sensor, a humidity sensor, an air volume sensor and a concentration sensor. The operation data acquisition unit is configured to acquire operation data from internal parameters of the unit.

[0009] Further, the feature extraction module comprises a data cleaning unit, a data formatting unit, a data normalization unit and a feature extraction unit. The data cleaning unit is configured to perform denoising processing on the environment data and the operation data through a Kalman filter to obtain cleaned data. The data formatting unit is configured to perform formatting processing on the cleaned data through a standard formatting method to obtain formatted data. The data normalization unit is configured to perform normalization processing on the formatted data through a Min-Max normalization method to obtain preprocessed data. The feature extraction unit is configured to extract environment features, operation features and energy consumption features from the preprocessed data through a principal component analysis (PCA) method, wherein the environment features comprise indoor and outdoor concentrations, indoor and outdoor temperatures, indoor and outdoor humidities and outdoor air enthalpy, the operation features comprise supply air volume, return air volume, supply air concentration, return air concentration, supply air temperature, return air temperature, supply air humidity and return air humidity, and the energy consumption features comprise cooling capacity consumption and heating capacity consumption.

[0010] Further, the operation monitoring module extracts outdoor temperature and outdoor air enthalpy from the environment features, and predefines an air enthalpy threshold, a hot season temperature threshold and a cold season temperature threshold, and judges the unit operation condition in combination with the environment features, with the following judgment logic: When the outdoor air enthalpy is greater than or equal to the air enthalpy threshold, and the outdoor temperature is greater than or equal to the hot season temperature threshold, the unit operation condition is determined to be a hot season condition. When the outdoor air enthalpy value is greater than or equal to the air enthalpy value threshold and the outdoor temperature is less than or equal to the cold season temperature threshold, the unit is judged to be operating under the cold season condition. When the outdoor air enthalpy value is less than or equal to the air enthalpy value threshold, or when the outdoor air enthalpy value is greater than or equal to the air enthalpy value threshold and the cold season temperature threshold is less than or equal to the outdoor temperature threshold, the unit is judged to be operating under transitional season conditions.

[0011] Furthermore, the energy-saving control module includes a strategy generation unit, a parameter adjustment unit, and an operation control unit; The strategy generation unit is used to receive the unit operating conditions from the operation monitoring module and generate energy-saving strategies under the corresponding unit operating conditions. The unit operating conditions include hot season conditions, cold season conditions and transition season conditions. The energy-saving strategies include fresh air and return air mixing ratio optimization strategy, air supply volume optimization strategy and surface cooler water flow optimization strategy. The parameter adjustment unit is used to receive operating features from the feature extraction module and adjust the unit operating parameters in combination with the operating features and energy-saving strategies. The unit operating parameters include the opening degree of the fresh air valve, the opening degree of the return air valve, the frequency of the supply fan, and the opening degree of the surface cooler water valve. The operation control unit controls the operation of the unit according to the unit's operating parameters.

[0012] Furthermore, the energy recovery module includes a recovery control unit, a heat exchange device, and a recovery monitoring unit; The recovery control unit is used to receive the unit's operating status from the operation monitoring module; The heat exchange equipment includes an air-to-air heat exchanger, a water-to-air heat exchanger, a heat storage tank, and a cold storage tank; During the hot season, the cooling energy in the exhaust air discharged from the unit is transferred to the cold storage tank for storage through a water-air heat exchanger, and the amount of cooling energy recovered is monitored by the recovery monitoring unit. When the unit is in a cool season, the heat in the exhaust air discharged from the unit is transferred to the heat storage tank through a water-air heat exchanger and the amount of heat recovered is monitored by the recovery monitoring unit. When the unit is in transitional season operation, the heat or cold in the exhaust air is transferred to the fresh air through the air-to-air heat exchanger, and the amount of cold or heat recovered is monitored by the recovery monitoring unit. The energy recovery monitoring unit is used to monitor the energy recovery amount and energy input amount through sensors, and to evaluate the energy recovery efficiency by calculating the ratio of energy recovery amount to energy input amount, thereby obtaining the energy recovery result. The sensors include a flow meter and a temperature sensor. The energy recovery amount includes cold energy recovery amount and heat energy recovery amount. The energy input amount includes heat and cold energy in the exhaust air.

[0013] Furthermore, the energy consumption assessment module includes a data receiving unit, an energy consumption calculation unit, and an energy-saving judgment unit; The data receiving unit is used to receive energy consumption characteristics and energy recovery amount; The energy consumption calculation unit is used to calculate the cooling power consumption and heating power consumption based on energy consumption characteristics, and to calculate the equivalent energy savings for cooling and heating based on energy recovery, and to calculate the comprehensive energy consumption using the following formula:

[0014] The energy-saving judgment unit is used to calculate the energy-saving rate using the following formula:

[0015] A preset energy consumption standard is set, and it is determined whether the overall energy consumption is lower than the preset energy consumption standard. If so, it is determined that the energy-saving target has been achieved; otherwise, it is determined that the energy-saving target has not been achieved, thereby obtaining the judgment result. The judgment result and the energy-saving rate together constitute the energy consumption assessment result.

[0016] Furthermore, the visualization module includes a display module and a wireless communication module; The display module is used to display the unit's operating status, energy-saving strategies, energy recovery results, and energy consumption assessment results in real time. The wireless communication module is used to connect with the mobile device of the management personnel via Bluetooth or WIFI, and upload the unit's operating status, energy-saving strategy, energy recovery results and energy consumption assessment results to the mobile device in real time.

[0017] The beneficial effects of the technical solution provided by this invention include at least the following: This invention introduces a multi-dimensional energy-saving control strategy to dynamically adjust the operating parameters of the air conditioning unit (such as the fresh air-return air mixing ratio, air supply volume, and surface cooler water flow) according to the environmental characteristics of different seasons (hot season, cold season, and transitional season). This refined control method can significantly reduce the energy consumption of the air conditioning system. At the same time, by optimizing the fresh air-return air mixing ratio, the system can make full use of the cooling or heating capacity of the return air, reduce the load on the cooling or heating equipment, and further improve energy utilization efficiency.

[0018] This invention designs an energy recovery module that utilizes equipment such as air-to-air heat exchangers, water-to-air heat exchangers, heat storage tanks, and cold storage tanks to recover and store the cold or heat energy in waste air. Simultaneously, by monitoring the energy recovery amount and energy input amount in real time, the energy recovery efficiency is calculated, and the energy recovery result is obtained. This energy recovery mechanism can reduce dependence on traditional refrigeration or heating equipment, effectively improve energy utilization efficiency, and reduce operating costs.

[0019] This invention combines energy consumption characteristics with the comprehensive energy consumption and energy saving rate of the energy recovery calculation system, which can more comprehensively reflect the energy consumption of the system and provide accurate energy consumption data for managers. At the same time, through the visualization module, the unit's operating conditions, energy-saving strategies, energy recovery results and energy consumption assessment results are displayed, enabling managers to intuitively understand the system's operating status, thereby enabling them to promptly identify problems and make optimizations and adjustments.

[0020] This invention adopts a modular design, which can form a complete energy-saving control and management system through the collaborative work of various modules. This modular design not only improves the system's flexibility and scalability, but also achieves the overall energy-saving effect of the system through the collaboration of various modules. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a system structure diagram provided in an embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0024] This embodiment provides a control and management system for combined air conditioning units. Please refer to [link / reference]. Figure 1 This is a system structure diagram provided in an embodiment of the present invention.

[0025] A control and management system for a combined air conditioning unit in this embodiment includes: 1. Data Acquisition Module: Used to collect user-preset parameters, as well as monitor environmental and operational data in real time during unit operation; The data acquisition module includes a user action acquisition unit, an environmental data acquisition unit, and an operational data acquisition unit; The user action acquisition unit is used to acquire user preset parameters through an electronic touch screen and a wireless remote control device. The user preset parameters include preset operating mode, preset temperature, preset air volume and preset operating time. The environmental data acquisition unit is used to collect environmental data through multimodal sensors, including temperature sensors, humidity sensors, airflow sensors, and... Concentration sensor; The operation data acquisition unit is used to collect operation data from the unit's internal parameters.

[0026] It should be noted that a temperature sensor is a device that converts temperature changes into electrical signals. It is widely used in environmental monitoring and equipment operation monitoring. It typically employs the thermistor temperature measurement method, utilizing the property that the resistance of a semiconductor material changes with temperature to measure temperature. In combined air conditioning units, temperature sensors are installed at the unit's air inlet, air outlet, and in the indoor environment.

[0027] A humidity sensor is a device that detects the water vapor content in an environment. It is widely used in environmental monitoring and equipment operation monitoring. It typically employs a capacitive detection method, utilizing the change in dielectric constant of a medium after water molecules are adsorbed on its surface, causing a change in the medium's capacitance. Humidity is measured by detecting these changes. In combined air conditioning units, humidity sensors are usually installed in the indoor environment and in the unit's supply and return air ducts.

[0028] An airflow sensor is a device used to measure air volume. It determines the airflow by measuring the volume of air passing through a cross-section per unit time. Common airflow sensors include thermal airflow sensors, Pitot tube airflow sensors, and ultrasonic airflow sensors. In combined air conditioning units, airflow sensors are installed in the supply air ducts and return air ducts.

[0029] A concentration sensor is a device used to detect concentrations in the air. Concentration devices, common Concentration sensors include infrared absorption sensors and electrochemical sensors. In combined air conditioning units, Concentration sensors are installed at air inlets, air outlets, and in the indoor environment.

[0030] II. Feature Extraction Module: This module is used to preprocess and extract features from environmental and operational data to obtain environmental features, operational features, and energy consumption features. The feature extraction module includes a data cleaning unit, a data formatting unit, a data normalization unit, and a feature extraction unit; The data cleaning unit is used to denoise environmental and operational data using a Kalman filter to obtain cleaned data. The data formatting unit is used to format the cleaned data using standard formatting methods to obtain formatted data; The data normalization unit is used to normalize formatted data using the Min-Max normalization method to obtain preprocessed data; The feature extraction unit is used to extract environmental features, operational features, and energy consumption features from preprocessed data using principal component analysis (PCA). Environmental features include indoor and outdoor environmental characteristics. Concentration, indoor and outdoor temperature, indoor and outdoor humidity, and outdoor air enthalpy; operating characteristics include supply air volume, return air volume, and air volume. Concentration, return air Concentration, supply air temperature, return air temperature, supply air humidity, and return air humidity; energy consumption characteristics include cooling consumption and heating consumption.

[0031] It should be noted that a Kalman filter is a tool used to remove noise signals from data, and in data processing, it is usually implemented through mathematical algorithms. In the control and management system of a combined air conditioning unit, a Kalman filter is used to remove noise from the data collected by multimodal sensors (for example, environmental data collected by multimodal sensors may be affected by environmental interference or the accuracy of the sensors themselves, resulting in noise in the data; this noise can be removed by smoothing the data curve through a filter).

[0032] Standard formatting is a process of converting data into a unified format, which typically includes data type conversion, data unit standardization, and data structure adjustment. In the control and management system of a combined air conditioning unit, data collected by different sensors may have different formats and units (for example, a temperature sensor may output data in degrees Celsius, while a humidity sensor may output percentage data). Standard formatting can unify this data into a format that the system can recognize and process (such as floating-point format), facilitating subsequent analysis and processing.

[0033] Min-Max normalization is a data preprocessing method used to scale data to a fixed range (typically [0,1]). The formula for Min-Max normalization is:

[0034] in, It is the preprocessed data output by the data normalization unit. It is formatted data from the data formatting unit. and These are the minimum and maximum values ​​of the corresponding formatted data, respectively. In the control and management system of a combined air conditioning unit, the input formatted data may have different dimensions and ranges (for example, temperature data may be between -10℃ and 40℃, while humidity data may be between 0% and 100%). The Min-Max normalization method can unify these data into the same range, which facilitates subsequent feature extraction.

[0035] Principal Component Analysis (PCA) is a statistical method that extracts data features through dimensionality reduction. It projects the original data onto a new coordinate system, minimizing the correlation between the new coordinate axes (principal components) while retaining the main variance of the data as its features. In the control and management system of a combined air conditioning unit, the collected environmental and operational data may contain a large number of features, which may be redundant or correlated. PCA can extract the most representative features, thereby reducing data dimensionality and improving the system's computational efficiency and model performance.

[0036] The enthalpy of air reflects the energy state of air at a specific temperature and humidity. The formula for calculating the enthalpy of air is:

[0037] Where h is the enthalpy of air. T is the specific heat capacity of air (a constant), and T is the air temperature. It is the partial pressure of water vapor. It is the density of water vapor. It is the enthalpy of water vapor (a constant), where and It can be obtained by a humidity sensor.

[0038] III. Operation Monitoring Module: Used to determine the unit's operating conditions based on environmental characteristics and generate corresponding energy-saving modes; The operation monitoring module extracts outdoor temperature and outdoor air enthalpy from environmental characteristics, and presets air enthalpy thresholds, hot season temperature thresholds, and cold season temperature thresholds. It then combines these environmental characteristics to determine the unit's operating condition. The judgment logic is as follows: When the outdoor air enthalpy value is greater than or equal to the air enthalpy value threshold and the outdoor temperature is greater than or equal to the hot season temperature threshold, the unit is judged to be operating under hot season conditions. When the outdoor air enthalpy value is greater than or equal to the air enthalpy value threshold and the outdoor temperature is less than or equal to the cold season temperature threshold, the unit is judged to be operating under the cold season condition. When the outdoor air enthalpy value is less than or equal to the air enthalpy value threshold, or when the outdoor air enthalpy value is greater than or equal to the air enthalpy value threshold and the cold season temperature threshold is less than or equal to the outdoor temperature threshold, the unit's operating condition is determined to be the transitional season condition.

[0039] It should be noted that when the outdoor air enthalpy value is greater than or equal to the air enthalpy threshold and the outdoor temperature is greater than or equal to the hot season temperature threshold, it means that the outdoor air is both hot and humid, and the air conditioning system needs to cool to reduce the indoor temperature and humidity. When the outdoor air enthalpy value is greater than or equal to the air enthalpy threshold and the outdoor temperature is less than or equal to the cool season temperature threshold, it means that the outdoor air is both cold and dry, and the air conditioning system needs to heat to increase the indoor temperature. When the outdoor air enthalpy value is less than or equal to the air enthalpy threshold, or when the outdoor air enthalpy value is greater than or equal to the air enthalpy threshold and the cold season temperature threshold is less than or equal to the outdoor temperature threshold, it means that the outdoor air temperature and humidity are within a suitable range, and the air conditioning system can operate in a hybrid mode to optimize energy consumption.

[0040] IV. Energy-saving control module: Used to generate corresponding energy-saving strategies based on energy-saving modes and environmental characteristics, and adjust the operating parameters of the air conditioning unit; The energy-saving control module includes a strategy generation unit, a parameter adjustment unit, and an operation control unit; The strategy generation unit is used to receive the unit operating conditions from the operation monitoring module and generate energy-saving strategies for the corresponding unit operating conditions. The unit operating conditions include hot season conditions, cold season conditions and transition season conditions. The energy-saving strategies include fresh air and return air mixing ratio optimization strategy, air supply volume optimization strategy and surface cooler water flow optimization strategy. The parameter adjustment unit is used to receive operating features from the feature extraction module and adjust the unit's operating parameters in combination with the operating features and energy-saving strategies. The unit's operating parameters include the opening degree of the fresh air valve, the opening degree of the return air valve, the frequency of the supply fan, and the opening degree of the surface cooler water valve. The operation control unit controls the operation of the unit based on the unit's operating parameters.

[0041] It should be noted that the fresh air-return air mixing ratio optimization strategy refers to the ratio of fresh air (introduced fresh air) to return air (indoor recirculated air). Optimizing this ratio can effectively utilize the cooling or heating capacity of the return air, reduce cooling or heating load, and reduce energy consumption. Optimization strategies include: Optimization strategy for fresh air and return air mixing ratio under hot season conditions: In hot season, the outdoor temperature is high and the indoor temperature is low. The enthalpy of fresh air is usually higher than that of indoor air. At this time, appropriately reducing the fresh air volume and increasing the return air volume can reduce the load on the cooling equipment. Fresh air mixing ratio optimization strategy under cold season conditions: In the cold season, the outdoor temperature is low and the indoor temperature is high. The enthalpy of fresh air is usually lower than that of indoor air. At this time, appropriately reducing the fresh air volume and increasing the return air volume can reduce the load on the heating equipment. Fresh air-return air mixing ratio optimization strategy under transitional season conditions: During the transitional season, the enthalpy of outdoor air is close to that of indoor air. At this time, the fresh air-return air ratio can be adjusted according to the specific indoor and outdoor temperature and humidity conditions to achieve the best energy-saving effect. The unit operating parameter adjustments corresponding to the fresh air-return air mixing ratio optimization strategy include: Fresh air valve opening: The amount of fresh air entering is controlled by adjusting the opening of the fresh air valve. The opening of the fresh air valve is directly proportional to the amount of fresh air. Return air valve opening: The amount of return air circulation is controlled by adjusting the opening of the return air valve. The opening of the return air valve is directly proportional to the amount of return air.

[0042] Air supply volume optimization strategy: Air supply volume refers to the amount of air delivered to the room by the fan in the air conditioning system. Optimizing the air supply volume can reduce the fan's energy consumption while maintaining indoor comfort. Optimization strategies include: Air supply volume optimization strategy under hot season conditions: In hot season, in order to quickly reduce indoor temperature, it is necessary to increase the air supply volume; Air supply volume optimization strategy under cold season conditions: In the cold season, excessive air supply volume may cause the indoor temperature to drop too quickly and increase the heating load. In order to maintain the indoor temperature, it is necessary to reduce the air supply volume appropriately. Air supply volume optimization strategy during the transition season: During the transition season, it is necessary to adjust the air supply volume according to the changes in indoor and outdoor temperature and humidity in order to maintain indoor comfort and reduce energy consumption. The unit operating parameter adjustments corresponding to the air supply volume optimization strategy include: Blower frequency: The speed of the blower is adjusted by the frequency converter, thereby controlling the air volume. The frequency, blower speed and air volume are directly proportional.

[0043] Cooler water flow optimization strategy: Cooler water flow refers to the flow of hot or cold water through the cooler. Optimizing the cooler water flow can reduce energy consumption while meeting cooling or heating needs. Optimization strategies include: Cooler water flow optimization strategy under hot season conditions: In hot season, air needs to be cooled by the cooler, so the chilled water flow needs to be increased to improve the cooling effect. Cooler water flow optimization strategy under cold season conditions: In the cold season, air needs to be heated by the cooler, so the hot water flow needs to be increased to improve the heating effect. Cooler water flow optimization strategy during transitional seasons: During the transitional season, it is necessary to adjust the hot water flow or cold water flow according to the changes in indoor and outdoor temperature and humidity in order to achieve the best energy-saving effect.

[0044] The unit operating parameter adjustments corresponding to the surface cooler water flow optimization strategy include: Cooler water valve opening: The flow rate of hot or cold water is controlled by adjusting the opening of the cooler water valve. The valve opening is directly proportional to the flow rate.

[0045] V. Energy Recovery Module: Used for energy recovery and real-time monitoring of energy recovery results; The energy recovery module includes a recovery control unit, a heat exchange device, and a recovery monitoring unit; The recovery control unit is used to receive unit operating status data from the operation monitoring module; Heat exchange equipment includes air-to-air heat exchangers, water-to-air heat exchangers, heat storage tanks, and cold storage tanks; During the hot season, the cooling energy in the exhaust air discharged from the unit is transferred to the cold storage tank for storage through a water-air heat exchanger, and the amount of cooling energy recovered is monitored by the recovery monitoring unit. When the unit is in a cool season, the heat in the exhaust air discharged from the unit is transferred to the heat storage tank through a water-air heat exchanger and the amount of heat recovered is monitored by the recovery monitoring unit. When the unit is in transitional season operation, the heat or cold in the exhaust air is transferred to the fresh air through the air-to-air heat exchanger, and the amount of cold or heat recovered is monitored by the recovery monitoring unit. The energy recovery monitoring unit is used to monitor the amount of energy recovered and the amount of energy input through sensors, and to evaluate the energy recovery efficiency by calculating the ratio of the amount of energy recovered to the amount of energy input, thereby obtaining the energy recovery result. The sensors include flow meters and temperature sensors. The amount of energy recovered includes the amount of cold energy recovered and the amount of heat energy recovered. The amount of energy input includes the heat and cold energy in the exhaust air.

[0046] It should be noted that an air-to-air heat exchanger is a device that recovers energy by transferring heat or cold from exhaust air to fresh air through heat conduction. Its efficiency depends on the design and materials of the air-to-air heat exchanger, and its working principle is as follows: Exhaust air (exhausted air) and fresh air (introduced fresh air) come into indirect contact in the heat exchanger through partitions or pipes. The heat or cold in the exhaust air is transferred to the fresh air through the partitions. There is no direct mixing between the exhaust air and the fresh air during the heat exchange process. During the transitional season, when the temperature difference between indoors and outdoors is small, air-to-air heat exchangers can effectively transfer heat or cold from exhaust air to fresh air, reducing reliance on cooling or heating equipment.

[0047] A water-air heat exchanger is a device that recovers energy by transferring heat or cold from waste air to water through heat conduction. Its efficiency depends on the design and materials of the water-air heat exchanger. The working principle is as follows: When waste air passes through a water-air heat exchanger, the heat or cold energy in it is transferred to the water in the heat storage tank or cold storage tank through partitions or pipes, thereby achieving the storage of heat or cold energy. During hot seasons, the cold energy in the exhaust air is transferred to a cold storage tank for storage via a water-air heat exchanger. When cooling is needed, the water containing cold energy in the cold storage tank can transfer the cold energy to the indoor air via the water-air heat exchanger, thereby realizing the recovery and utilization of cold energy.

[0048] During the cold season, the heat in the exhaust air is transferred to the heat storage tank through a water-air heat exchanger for storage. When heating is needed, the water containing heat in the heat storage tank can transfer the heat to the indoor air through the water-air heat exchanger, thereby realizing the recovery and utilization of heat.

[0049] VI. Energy Consumption Assessment Module: Used to assess comprehensive energy consumption based on energy consumption characteristics and energy recovery results, and obtain energy consumption assessment results; The energy consumption assessment module includes a data receiving unit, an energy consumption calculation unit, and an energy-saving judgment unit; The data receiving unit is used to receive energy consumption characteristics and energy recovery amount; The energy consumption calculation unit is used to calculate the cooling and heating power consumption based on energy consumption characteristics, and to calculate the equivalent energy savings for cooling and heating based on energy recovery, and to calculate the overall energy consumption using the following formula:

[0050] The energy-saving judgment unit calculates the energy-saving rate using the following formula:

[0051] The system sets a preset energy consumption standard, determines whether the overall energy consumption is lower than the preset standard, and obtains the judgment result. If yes, it is determined that the energy-saving target has been achieved; otherwise, it is determined that the energy-saving target has not been achieved. The judgment result and the energy-saving rate together constitute the energy consumption assessment result.

[0052] It should be noted that the methods for calculating cooling and heating power consumption based on energy consumption characteristics include:

[0053] The COP (Coefficient of Performance) of refrigeration equipment indicates how many units of cooling capacity can be generated for every 1 unit of electrical energy consumed, and it is usually between 2 and 5.

[0054] The COP (coefficient of performance) of heating equipment indicates how many units of heat can be generated for every 1 unit of electrical energy consumed, and it is usually between 2 and 5. Methods for calculating the equivalent energy savings for cooling and heating based on energy recovery include:

[0055]

[0056] Energy consumption standards are usually pre-set based on industry standards and specifications, such as standards and specifications for building energy consumption and air conditioning system energy consumption. These standards specify energy consumption limits for different types of buildings and provide reference values ​​and calculation methods for air conditioning system energy consumption.

[0057] 7. Visualization Module: Used to display the unit's operating status, energy-saving strategies, energy recovery results, and energy consumption assessment results in real time, and upload them to mobile devices in real time; The visualization module includes a display module and a wireless communication module; The display module is used to display the unit's operating status, energy-saving strategies, energy recovery results, and energy consumption assessment results in real time. The wireless communication module is used to connect with the mobile devices of management personnel via Bluetooth or WIFI, and upload the unit's operating status, energy-saving strategies, energy recovery results and energy consumption assessment results to the mobile devices in real time.

[0058] It should be noted that Bluetooth is a short-range wireless communication technology primarily used for transmitting data and audio signals between devices. It communicates via radio waves in the 2.4 GHz band and supports point-to-point or multi-point connections.

[0059] WIFI is a wireless local area network technology that allows devices to connect to a network wirelessly within a certain range (usually tens to hundreds of meters). It communicates using radio waves in the 2.4 GHz or 5 GHz frequency band.

[0060] Managers are professionals responsible for monitoring and managing the operation of air conditioning units. They can receive and view unit operating conditions, energy-saving strategies, energy recovery results, and energy consumption assessment results at any time through mobile devices, and monitor the system's operating status. This allows them to promptly identify and address problems, thereby improving the system's operating efficiency and reliability.

[0061] Furthermore, it should be noted that the present invention can be provided as a method, apparatus, or computer program product. Therefore, embodiments of the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, embodiments of the present invention can take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program code.

[0062] Embodiments of the present invention are described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations 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, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1A device that provides the functions specified in one or more boxes.

[0063] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The functions specified in one or more boxes. These computer program instructions may also be loaded onto a computer or other programmable data processing terminal equipment to cause a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0064] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0065] Finally, it should be noted that the above description represents a preferred embodiment of the present invention. It should be pointed out that although preferred embodiments have been described, those skilled in the art, once they understand the basic inventive concept of the present invention, can make various improvements and modifications without departing from the principles described herein. These improvements and modifications should also be considered within the scope of protection of the present invention. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.

Claims

1. A control and management system for a combined air conditioning unit, characterized in that, include: Data acquisition module: used to collect user-preset parameters, as well as monitor environmental and operational data in real time during unit operation; Feature extraction module: used to preprocess and extract features from environmental and operational data to obtain environmental features, operational features, and energy consumption features; Operation monitoring module: used to determine the unit's operating conditions based on environmental characteristics and generate corresponding energy-saving modes; Energy-saving control module: used to generate corresponding energy-saving strategies based on energy-saving modes and environmental characteristics, and adjust the operating parameters of the air conditioning unit; Energy recovery module: Used to recover energy and monitor the energy recovery results in real time; Energy consumption assessment module: used to assess comprehensive energy consumption based on energy consumption characteristics and energy recovery results, and obtain energy consumption assessment results; Visualization module: Used to display the unit's operating status, energy-saving strategies, energy recovery results, and energy consumption assessment results in real time, and upload them to mobile devices in real time.

2. The control and management system for a combined air conditioning unit according to claim 1, characterized in that: The data acquisition module includes a user action acquisition unit, an environmental data acquisition unit, and a runtime data acquisition unit; The user action acquisition unit is used to acquire user preset parameters through an electronic touch screen and a wireless remote control device. The user preset parameters include preset operating mode, preset temperature, preset air volume and preset operating time. The environmental data acquisition unit is used to acquire environmental data through multimodal sensors, including a temperature sensor, a humidity sensor, an airflow sensor, and... Concentration sensor; The operation data acquisition unit is used to collect operation data from the unit's internal parameters.

3. The control and management system for a combined air conditioning unit according to claim 1, characterized in that: The feature extraction module includes a data cleaning unit, a data formatting unit, a data normalization unit, and a feature extraction unit; The data cleaning unit is used to denoise environmental data and operational data using a Kalman filter to obtain cleaned data. The data formatting unit is used to format the cleaned data using a standard formatting method to obtain formatted data; The data normalization unit is used to normalize formatted data using the Min-Max normalization method to obtain preprocessed data; The feature extraction unit is used to extract environmental features, operational features, and energy consumption features from the preprocessed data using principal component analysis. The environmental features include indoor and outdoor features. Concentration, indoor and outdoor temperature, indoor and outdoor humidity, and outdoor air enthalpy; the operating characteristics include supply air volume, return air volume, and supply air... Concentration, return air The energy consumption characteristics include the concentration, supply air temperature, return air temperature, supply air humidity, and return air humidity, and include cooling consumption and heating consumption.

4. The control and management system for a combined air conditioning unit according to claim 1, characterized in that: The operation monitoring module extracts outdoor temperature and outdoor air enthalpy from environmental characteristics, and presets air enthalpy threshold, hot season temperature threshold and cold season temperature threshold. It combines environmental characteristics to determine the unit's operating condition. The judgment logic is as follows: When the outdoor air enthalpy value is greater than or equal to the air enthalpy value threshold and the outdoor temperature is greater than or equal to the hot season temperature threshold, the unit is judged to be operating under hot season conditions. When the outdoor air enthalpy value is greater than or equal to the air enthalpy value threshold and the outdoor temperature is less than or equal to the cold season temperature threshold, the unit is judged to be operating under the cold season condition. When the outdoor air enthalpy value is less than or equal to the air enthalpy value threshold, or when the outdoor air enthalpy value is greater than or equal to the air enthalpy value threshold and the cold season temperature threshold is less than or equal to the outdoor temperature threshold, the unit is judged to be operating under transitional season conditions.

5. The control and management system for a combined air conditioning unit according to claim 1, characterized in that: The energy-saving control module includes a strategy generation unit, a parameter adjustment unit, and an operation control unit; The strategy generation unit is used to receive the unit operating conditions from the operation monitoring module and generate energy-saving strategies under the corresponding unit operating conditions. The unit operating conditions include hot season conditions, cold season conditions and transition season conditions. The energy-saving strategies include fresh air and return air mixing ratio optimization strategy, air supply volume optimization strategy and surface cooler water flow optimization strategy. The parameter adjustment unit is used to receive operating features from the feature extraction module and adjust the unit operating parameters in combination with the operating features and energy-saving strategies. The unit operating parameters include the opening degree of the fresh air valve, the opening degree of the return air valve, the frequency of the supply fan, and the opening degree of the surface cooler water valve. The operation control unit controls the operation of the unit according to the unit's operating parameters.

6. The control and management system for a combined air conditioning unit according to claim 5, characterized in that: The energy recovery module includes a recovery control unit, a heat exchange device, and a recovery monitoring unit; The recovery control unit is used to receive the unit's operating status from the operation monitoring module; The heat exchange equipment includes an air-to-air heat exchanger, a water-to-air heat exchanger, a heat storage tank, and a cold storage tank; During the hot season, the cooling energy in the exhaust air discharged from the unit is transferred to the cold storage tank for storage through a water-air heat exchanger, and the amount of cooling energy recovered is monitored by the recovery monitoring unit. When the unit is in a cool season, the heat in the exhaust air discharged from the unit is transferred to the heat storage tank through a water-air heat exchanger and the amount of heat recovered is monitored by the recovery monitoring unit. When the unit is in transitional season operation, the heat or cold in the exhaust air is transferred to the fresh air through the air-to-air heat exchanger, and the amount of cold or heat recovered is monitored by the recovery monitoring unit. The energy recovery monitoring unit is used to monitor the energy recovery amount and energy input amount through sensors, and to evaluate the energy recovery efficiency by calculating the ratio of energy recovery amount to energy input amount, thereby obtaining the energy recovery result. The sensors include a flow meter and a temperature sensor. The energy recovery amount includes cold energy recovery amount and heat energy recovery amount. The energy input amount includes heat and cold energy in the exhaust air.

7. The control and management system for a combined air conditioning unit according to claim 6, characterized in that: The energy consumption assessment module includes a data receiving unit, an energy consumption calculation unit, and an energy-saving judgment unit; The data receiving unit is used to receive energy consumption characteristics and energy recovery amount; The energy consumption calculation unit is used to calculate the cooling power consumption and heating power consumption based on energy consumption characteristics, and to calculate the equivalent energy savings for cooling and heating based on energy recovery, and to calculate the comprehensive energy consumption using the following formula: The energy-saving judgment unit is used to calculate the energy-saving rate using the following formula: A preset energy consumption standard is set, and it is determined whether the overall energy consumption is lower than the preset energy consumption standard. If so, it is determined that the energy-saving target has been achieved; otherwise, it is determined that the energy-saving target has not been achieved, thereby obtaining the judgment result. The judgment result and the energy-saving rate together constitute the energy consumption assessment result.

8. The control and management system for a combined air conditioning unit according to claim 1, characterized in that: The visualization module includes a display module and a wireless communication module; The display module is used to display the unit's operating status, energy-saving strategies, energy recovery results, and energy consumption assessment results in real time. The wireless communication module is used to connect with the mobile device of the management personnel via Bluetooth or WIFI, and upload the unit's operating status, energy-saving strategy, energy recovery results and energy consumption assessment results to the mobile device in real time.

Images