Compartment partition isolation type air duct system and air speed monitoring and power compensation method thereof

Abstract

The invention discloses a compartment partition isolation type air duct system and an air speed monitoring and power compensation method thereof, and relates to the technical field of compartment air volume control. On the premise that low noise of the passenger area is guaranteed, balanced air supply of the passenger area and the equipment area is achieved through air speed monitoring and power compensation, meanwhile, the overall air resistance is reduced, and the heat dissipation efficiency is improved. By designing the intelligent air duct system, multi-objective optimization of low noise, high heat dissipation efficiency and energy-saving operation is achieved, and the technical bottleneck of an existing compartment air duct system is solved.

Description

Technical Field

[0001] This invention relates to the field of airflow control technology in train carriages, specifically to a compartment-separated air duct system and its wind speed monitoring and dynamic compensation method. Background Technology

[0002] In existing train carriage designs, to ensure passenger comfort and a low-noise environment, partition walls are typically used to divide the carriage into passenger and equipment areas. The equipment area usually houses heat-generating and high-noise equipment such as UPS power supplies, computers, and servers, while the passenger area requires stable temperature and airflow distribution, as well as a relatively quiet working / resting environment. However, this partitioning design complicates the airflow layout: 1. Winding air ducts increase air resistance: Due to the obstruction of partition walls, the air supply path is lengthened, air resistance increases, and overall ventilation efficiency is affected; 2. Insufficient end-point component: The equipment area is usually located at the end of the air duct. Due to the accumulation of air resistance, the air velocity in this area decreases, which may lead to insufficient heat dissipation and affect the reliability of the equipment. 3. Uneven airflow distribution between the passenger area and the equipment area. Traditional duct design cannot guarantee a balanced airflow between the two areas, which may lead to problems such as the passenger area being too cold or the equipment area being too hot.

[0003] The common solutions and their existing problems are as follows: 1. Increasing air conditioner power: This will lead to increased energy consumption and environmental noise, and the improvement in terminal ventilation effect will not be significant; 2. Optimize the shape of the air duct: A streamlined air duct is adopted, but there is a problem that it cannot dynamically adapt to different working conditions; 3. Manually adjustable air valve: Relies on manual intervention and cannot respond to changes in wind speed in real time. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems by providing a compartment-separated air duct system and its wind speed monitoring and power compensation method. This system can achieve balanced air supply between the passenger area and the equipment area through wind speed monitoring and power compensation while ensuring low noise in the passenger area, thereby reducing overall wind resistance and improving heat dissipation efficiency.

[0005] The technical solution of the present invention is as follows: A compartment-separated ventilation duct system includes: Air conditioning is used to provide the main airflow. The air duct structure has its inlet connected to the air outlet of the air conditioner, and is divided into passenger area branch air ducts and equipment area branch air ducts at the partition wall of the carriage. At least one wind speed / wind pressure sensor is installed at a key node of the duct structure to monitor wind speed; At least one equipment area temperature sensor is installed in the equipment area to monitor the ambient temperature of the equipment area; At least one compensating fan is installed at the end of the branch air duct in the equipment area; At least one passenger area temperature sensor is installed in the passenger area; The central controller is connected to the air conditioner, wind speed / wind pressure sensor, equipment area temperature sensor, compensating fan electrical properties, and passenger area temperature sensor, respectively. The central controller is configured to: adjust the air outlet parameters of the air conditioner based on the monitoring data of the passenger area temperature sensor to maintain the temperature of the passenger area within a comfortable range; and dynamically adjust the speed of the compensation fan based on the monitoring data of the wind speed / wind pressure sensor and the equipment area temperature sensor to achieve power compensation air supply to the equipment area.

[0006] Through system-level innovation, the ventilation of the vehicle compartment has been comprehensively improved in terms of performance, energy efficiency, and noise reduction, demonstrating significant technological advancement and practical value.

[0007] Breaking through the limitations of traditional fixed air ducts, it achieves dynamic and precise air volume distribution between the passenger area and the equipment area. The intelligent adjustment system automatically adapts to different operating conditions to ensure the best air supply effect in each area.

[0008] The innovative air duct structure significantly reduces airflow resistance and improves air delivery efficiency, while the intelligent compensation mechanism reduces the burden on the air conditioning system and achieves energy-saving operation. Optimized airflow organization effectively reduces operating noise and ensures a quiet environment in the passenger area; The intelligent monitoring system monitors the environment of the equipment area and links with the compensation device to effectively improve the heat dissipation efficiency of the equipment area and prevent overheating failures.

[0009] Furthermore, the central controller is configured to execute the following control loop: The ambient temperature in the passenger area is collected. If it is higher than the first set threshold, the air conditioner fan speed is increased and / or its set temperature is decreased; if it is lower than the second set threshold, the air conditioner fan speed is decreased and / or its set temperature is increased. After the temperature in the passenger area stabilizes, the wind speed and ambient temperature in the equipment area are collected. If the temperature in the equipment area is higher than the third set threshold and the wind speed is lower than the fourth set threshold, the speed of the compensation fan is increased; if the temperature in the equipment area is lower than the fifth set threshold and the wind speed is higher than the sixth set threshold, the speed of the compensation fan is decreased.

[0010] Furthermore, the duct structure is a three-dimensional Z-shaped duct after topology optimization. The topology optimization includes steps such as parametric duct modeling, segmented establishment of duct resistance model, selection of key parameters, and optimization of minimum resistance target value.

[0011] Furthermore, the parametric duct modeling and segmented establishment of the duct resistance model include: Based on the following duct resistance formula, modeling is performed using local resistance and friction resistance: , in: For friction resistance, For local resistance, The coefficient of friction resistance of the air duct; The average air velocity; The density of air; The length of the pipe; Equivalent diameter The cross-sectional area of ​​the pipe through which the flow occurs; —The perimeter of the pipe, This is the local drag coefficient; The total resistance of the pipeline is established using the following formula:

[0012] in, For different cross-sections, the friction coefficient is... Representative at Bend under cross section The local drag coefficient, In order to be in Equivalent diameter under cross section In order to be in Average air velocity under the cross-section; The λ coefficient for different cross-sections is calculated using the following formula: , in, for Pipe roughness, for Pipe interface diameter, cross section The Reynolds number of the air duct is calculated using the following formula: , in, The viscosity is the kinematic viscosity of air.

[0013] Furthermore, the selection of key parameters and optimization of the minimum resistance target value include: As can be seen from the formula of the duct resistance model, at duct length Under the condition that the air volume of the air conditioner remains unchanged, the equivalent diameter Local drag coefficient The parameters directly affect the duct resistance value. In this duct, there is a 90-degree bend, and its resistance loss coefficient is: , Based on the achievable center bending radius The range can be determined. The range of values ​​for; Determine key parameter variables , The range of values ​​is defined as the duct resistance value as the objective function. , The constraints are as follows: , The range of values ​​is: , , The optimal value can be solved using MATLAB's built-in genetics toolbox.

[0014] Furthermore, the power compensation for the equipment area of ​​the compensating fan is calculated through the following steps: System air supply volume calculation: Based on the transient heat exchange characteristics of the cabin, considering the total cooling power of the air conditioner and the target temperature of the inlet and outlet air vents, the required air supply volume of the air conditioner can be assessed. The formula for calculating the air volume is as follows: , in, To meet the required airflow inside the cabin, For air conditioning cooling capacity, The specific heat capacity of air, air density, The target return air temperature for the air conditioner, The target air outlet temperature for the air conditioner; System duct resistance calculation: By combining the PQ curve of the air conditioner's outlet fan with the duct resistance equation, the airflow of the air conditioner's outlet fan can be calculated. ; The PQ curve of an air conditioner is a monotonically decreasing curve in the first quadrant of the pressure-flow coordinate system. The PQ curve can be fitted using a 5th-order equation from the polyfit function in MATLAB. , And establish the relationship between flow rate and speed: , When the pressure and flow rates of the PQ curve equation for the air conditioner's outlet fan and the resistance equation for the duct are equal (i.e., when the two curves intersect), the airflow rate of the air conditioner's outlet fan in that duct can be calculated. Solve using the following formula : .

[0015] Furthermore, the power compensation for the equipment area of ​​the compensating fan also includes: Fan selection and air volume boundary calculation: When the air conditioning requires air volume Less than the actual air conditioning air volume At that time, it is necessary to add an outlet fan, which can be sought at the contact point. Duct resistance value under air volume conditions : , Solve for the pressure demand value at this time. Check the airflow of a single outlet fan against the PQ curve of the selected outlet fan at this ΔP pressure value. When the fan's air volume Greater than If so, the selected number and model of fans will meet the design requirements.

[0016] This application also includes a method for wind speed monitoring and dynamic compensation in a compartment-separated air duct system, applied to a compartment-separated air duct system, comprising the following steps: The wind speed and temperature data of the equipment area are collected in real time by wind speed sensors and equipment area temperature sensors; The central controller receives the data and calculates the airflow requirements for the equipment area; The central controller compares the calculated air volume demand with the current monitored air volume and generates control commands. The central controller sends the control command to the compensation fan to dynamically adjust its speed in order to provide power compensation airflow to the equipment area.

[0017] Furthermore, it also includes the following steps: Passenger area temperature data is collected in real time by a passenger area temperature sensor; The central controller prioritizes generating adjustment commands for the air conditioning based on the temperature data of the passenger area, controlling its air output parameters so that the temperature of the passenger area is prioritized to reach and maintain within the comfortable range.

[0018] Furthermore, the adjustment of air conditioners and compensating fans follows a hierarchical decision-making mechanism: First, with the temperature in the passenger area as the control target, the airflow speed and temperature of the air conditioner are adjusted in a closed loop. Then, under the premise that the temperature in the passenger area is stable, the speed of the compensation fan is adjusted in a closed loop, with the temperature and wind speed in the equipment area as constraints.

[0019] Compared with existing technologies, the advantages of this invention are: By designing an intelligent air duct system, we achieve multi-objective optimization of low noise, high heat dissipation efficiency, and energy-saving operation, thus overcoming the technical bottlenecks of existing carriage air duct systems and specifically addressing the following issues: 1. Optimized zoned air duct design: Reduce basic air resistance through streamlined air duct layout while ensuring sound insulation; 2. Real-time wind speed monitoring and feedback control: Wind speed sensors are deployed at key nodes to dynamically adjust airflow distribution; 3. Power compensation technology for equipment area: A controllable auxiliary fan is added at the end of the air duct to accurately supplement airflow based on wind speed data; 4. Intelligent collaborative control algorithm: The air conditioner and compensation device work together to ensure balanced airflow and optimal energy consumption. Attached Figure Description

[0020] Figure 1 A schematic diagram illustrating the scenario of the intelligent ventilation system described in this application.

[0021] Figure 2 This is a connection diagram of the intelligent ventilation system of this application.

[0022] Figure 3 This is the full-pressure cloud map before optimization in the simulation experiment of this application.

[0023] Figure 4 This is the optimized full-pressure cloud map used in the simulation experiment of this application.

[0024] Figure 5 The static pressure cloud diagram before optimization in the simulation experiment of this application.

[0025] Figure 6 This is the optimized static pressure contour map used in the simulation experiment of this application.

[0026] Figure 7 This is a flowchart of the control algorithm in this application.

[0027] Reference numerals: 1-Air conditioner, 2-Wind speed / wind pressure sensor, 3-Passenger area branch air duct, 4-Equipment area branch air duct, 5-Equipment area temperature sensor, 6-Central controller, 7-Compensating fan, 8-Passenger area temperature sensor. Detailed Implementation

[0028] It should be noted that relational terms such as "first" and "second" are used merely 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. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0030] Please see Figure 1-7 This is a compartment-separated air duct system that achieves balanced airflow and efficient heat dissipation between the passenger area and equipment area through innovative duct structure design, real-time wind speed monitoring, and dynamic power compensation technology. The system uses an air conditioner 1 to provide unified heat dissipation, and features a complex "three-dimensional Z-shaped" split air duct design. At the partition wall, the airflow is split into passenger area branch ducts 3 and equipment area branch ducts 4. Combined with multiple sets of wind speed / pressure sensors 2, passenger area temperature sensors 8, equipment area temperature sensors 5, and multiple sets of terminal compensation fans 7, the system is centrally controlled by a central controller 6 deployed in a cabinet, constructing a closed-loop intelligent control system. Figure 1 As shown in the figure. This solution effectively solves the technical problems of uneven wind resistance, insufficient air volume at the terminal, and difficulty in noise control that exist in traditional compartmented carriages, ensuring the comfort of the passenger area while ensuring reliable heat dissipation of the equipment area.

[0031] System Overall Architecture: This application designs a three-layer intelligent control architecture, with the connection diagram as follows. Figure 2 As shown.

[0032] Data acquisition layer (top layer): consists of wind speed / pressure sensors distributed at key nodes of the air duct and temperature sensors monitoring the passenger area and equipment area; responsible for collecting real-time system operating status data to provide a basis for control decisions; Core control layer (middle layer): Centered on the central controller, it has a built-in dedicated dynamic air volume distribution algorithm, receives data from all sensors, performs calculations and analysis, and outputs control commands to the execution layer. It is the brain of the system. The execution layer (lower layer) includes air conditioning and compensating fans. They receive controller commands, coordinate their actions, and precisely adjust their respective power to ultimately achieve precise control over the two core objectives: the passenger area (quiet and comfortable) and the equipment area (efficient heat dissipation).

[0033] Data flows converge from bottom to top, and control commands are executed from top to bottom, forming an efficient intelligent closed-loop feedback system that ensures dynamic and balanced distribution of airflow.

[0034] Zoned air duct structure topology optimization: (1) Parametric duct modeling The cabin air duct runs from the air conditioning vents through the passenger compartment to the equipment compartment. It has numerous bends, complex airflow distribution, and multiple variable cross-section pathways. Therefore, it is necessary to model the air duct resistance in sections. Based on the duct resistance formula 1), modeling is performed using local resistance and friction resistance: Formula 1) In the formula: The friction factor is Pa. The local resistance is measured in Pa. The coefficient of friction resistance of the air duct; —Average air velocity (m / s); —The density of air (kg / m3); — Length of the pipe (m); Equivalent diameter —Cross-sectional area of ​​the pipe (m2); —Circumference of the pipe (m). This is the local drag coefficient.

[0035] (2) Establish the duct resistance model in segments The air conditioning duct studied in this patent is a variable cross-section, variable extension duct. Therefore, it is necessary to distinguish between different cross-sectional dimensions for friction resistance calculation. The local resistance of fluid flow at different cross-sections and the local resistance due to changes in flow direction need to be calculated separately. Therefore, the total duct resistance is established according to formula 2), where... For different cross-sections, the friction coefficient is... Representative at Bend under cross section The local drag coefficient.

[0036] Different cross sections The coefficients are solved according to formula 3), where cross section The Reynolds number of the air duct is calculated according to formula 4). for Pipe roughness, for Pipe interface diameter, The viscosity is the kinematic viscosity of air.

[0037] Formula 2) Formula 3) Formula 4) (3) Selection of key variable parameters As can be seen from the formula of the duct resistance model, at duct length Under the condition that the air volume of the air conditioner remains unchanged, the equivalent diameter Local drag coefficient The parameters directly affect the duct resistance value. This duct contains a 90-degree bend, and its resistance loss coefficient is given by formula 5, based on the achievable center bend radius. The range can be determined. The range of values ​​for .

[0038] Formula 5) (4) Optimization of minimum resistance target value Determine key parameter variables , The range of values ​​is defined as follows: the duct resistance value is the objective function (see Formula 6), the constraints are shown in Formula 7, and the range of values ​​is shown in Formula 8. The optimal value is solved using MATLAB's built-in genetic algorithm toolbox.

[0039] Formula 6) Formula 7) Formula 8) (5) Simulation analysis and verification Fluid dynamics analysis tools were used to simulate and calculate the duct models before and after optimization, analyzing the pressure changes in the duct before and after optimization. Figure 3 , Figure 4 , Figure 5 and Figure 6 The calculation results show that the above optimization method significantly reduces the duct resistance and effectively increases the duct output air volume.

[0040] After optimization, the total resistance in the flow channel is reduced, the eddies are decreased, the air volume is increased when the air conditioner is working, and the cooling effect is better.

[0041] Design of power compensation device for equipment area: (1) Calculation of system supply air volume Based on the transient heat exchange characteristics of the shelter, and considering the total cooling power of the air conditioner and the target temperature of the inlet and outlet air vents, the required air volume of the air conditioner can be assessed, and its air volume is calculated according to formula 9).

[0042] Formula 9) in To meet the required airflow inside the cabin, For air conditioning cooling capacity, The specific heat capacity of air, air density, The target return air temperature for the air conditioner, The target air outlet temperature for the air conditioner.

[0043] (2) Calculation of system duct resistance By combining the PQ curve of the air conditioner's outlet fan with the resistance equation of the air duct, the air volume of the air conditioner's outlet fan can be calculated. .

[0044] The PQ curve of an air conditioner is a monotonically decreasing curve in the first quadrant of the pressure-flow coordinate system. The PQ curve can be fitted using the fifth-order equation of the polyfit function in MATLAB (see Equation 10), and the relationship between flow rate and velocity can be established (see Equation 11).

[0045] Formula 10) Formula 11) When the pressure and flow rates of the PQ curve equation (Formula 10) of the air conditioner's outlet fan and the resistance equation (Formula 2) of the duct are equal, i.e., when the two curves intersect, the air volume of the air conditioner's outlet fan in this flow channel can be calculated. The solution can be achieved using formulas 12), 10), 11), 2), 3), and 4). .

[0046] Formula 12) (3) Fan selection and air volume boundary calculation When the air conditioner requires airflow Less than the actual air conditioning air volume At that time, it is necessary to add an outlet fan to... Substituting into formulas 2) and 11), and combining them with formulas 3) and 4), the duct resistance value under this airflow condition can be calculated. Using formula 13): Formula 13) Solve for the pressure demand value at this time. Check the PQ curve of the outlet fan to be selected. Air volume of a single outlet fan under pressure value When the fan's air volume Greater than If so, the selected number and model of fans will meet the design requirements.

[0047] Intelligent cooperative control algorithm design: The core of this invention lies in providing an intelligent collaborative control algorithm for a vehicle compartment ventilation system. This algorithm prioritizes passenger compartment temperature as the highest control objective, and uses airflow and temperature in the equipment compartment as key constraints. Through a hierarchical decision-making mechanism, it dynamically and collaboratively adjusts the air conditioning unit (outlet air temperature and airflow speed) and the compensating fans at the equipment compartment terminals, thereby achieving a highly efficient balance between passenger compartment comfort and equipment compartment heat dissipation. The logic of the control algorithm is as follows: Figure 7 As shown.

[0048] Description of the control algorithm: (1) System startup initialization, parameter initialization; (2) Collect the ambient temperature of the passenger area and compare it with the comfort temperature zone. If the ambient temperature of the passenger area is greater than the maximum set temperature of the passenger area, increase the air conditioning fan speed and decrease the set temperature of the air conditioning according to the temperature difference ΔT1. The larger the difference, the greater the adjustment. If the ambient temperature of the passenger area is less than the minimum set temperature of the passenger area, decrease the air conditioning fan speed and increase the set temperature of the air conditioning according to the temperature difference ΔT2. Similarly, the larger the difference, the greater the adjustment. Continue until the air conditioning fan speed, temperature and passenger area temperature are balanced, and maintain the air conditioning temperature and air outlet speed. (3) For the equipment area, after ensuring the comfort and stability of the passenger area environment, the required air volume of the equipment area is calculated by collecting data from wind speed / wind pressure sensors and temperature sensors in the equipment area, thereby assessing the required wind speed range. If the temperature in the equipment area and If the temperature is too high, increase the fan speed; if the temperature is too high, increase the fan speed. and If the temperature is too high, reduce the fan speed. Repeat this process until the fan speed and temperature reach equilibrium, then maintain the fan speed. (4) Repeat steps (2) and (3).

[0049] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A compartment-separated ventilation duct system, characterized in that, include: Air conditioner (1), used to provide main airflow; The air duct structure has its inlet connected to the air outlet of the air conditioner (1), and is divided into passenger area branch air duct (3) and equipment area branch air duct (4) at the partition wall of the carriage. At least one wind speed / wind pressure sensor (2) is installed at a key node of the duct structure to monitor wind speed; At least one equipment area temperature sensor (5) is installed in the equipment area to monitor the ambient temperature of the equipment area; At least one compensating fan (7) is installed at the end of the branch air duct (4) in the equipment area; At least one passenger area temperature sensor (8) is installed in the passenger area; The central controller (6) is connected to the air conditioner (1), the wind speed / wind pressure sensor (2), the equipment area temperature sensor (5), the compensating fan electrical properties (7), and the passenger area temperature sensor (8), respectively. The central controller (6) is configured to: adjust the air outlet parameters of the air conditioner based on the monitoring data of the passenger area temperature sensor (8) to maintain the passenger area temperature within a comfortable range; and dynamically adjust the speed of the compensation fan (7) based on the monitoring data of the wind speed / wind pressure sensor (2) and the equipment area temperature sensor (5) to achieve power compensation air supply to the equipment area.

2. The compartment-separated ventilation duct system according to claim 1, characterized in that, The central controller (6) is configured to execute the following control loop: Collect the ambient temperature of the passenger area. If it is higher than the first set threshold, increase the air speed of the air conditioner (1) and / or decrease its set temperature; if it is lower than the second set threshold, decrease the air speed of the air conditioner (1) and / or increase its set temperature. After the temperature in the passenger area stabilizes, the wind speed and ambient temperature in the equipment area are collected. If the temperature in the equipment area is higher than the third set threshold and the wind speed is lower than the fourth set threshold, the speed of the compensation fan (7) is increased; if the temperature in the equipment area is lower than the fifth set threshold and the wind speed is higher than the sixth set threshold, the speed of the compensation fan (7) is decreased.

3. The compartment-separated ventilation duct system according to claim 1, characterized in that, The duct structure is a three-dimensional Z-shaped duct after topology optimization. The topology optimization includes parametric duct modeling, segmented duct resistance model establishment, key parameter selection, and minimum resistance target value optimization steps.

4. The compartment-separated ventilation duct system according to claim 3, characterized in that, The parametric duct modeling and segmented establishment of the duct resistance model include: Based on the following duct resistance formula, modeling is performed using local resistance and friction resistance: ， in: For friction resistance, For local resistance, The coefficient of friction resistance of the air duct; The average air velocity; The density of air; The length of the pipe; Equivalent diameter The cross-sectional area of ​​the pipe through which the flow occurs; —The perimeter of the pipe, This is the local drag coefficient; The total resistance of the pipeline is established using the following formula: in, For different cross-sections, the friction coefficient is... Representative at Bend under cross section The local drag coefficient, In order to be in Equivalent diameter under cross section In order to be in Average air velocity under the cross-section; The λ coefficient for different cross-sections is calculated using the following formula: ， in, for Pipe roughness, for Pipe interface diameter, cross section The Reynolds number of the air duct is calculated using the following formula: ， in, The viscosity is the kinematic viscosity of air.

5. A compartment-separated ventilation duct system according to claim 3, characterized in that, The selection of key parameters and optimization of the minimum resistance target value include: As can be seen from the formula of the duct resistance model, at duct length Under the condition that the air volume of the air conditioner remains unchanged, the equivalent diameter Local drag coefficient The parameters directly affect the duct resistance value. In this duct, there is a 90-degree bend, and its resistance loss coefficient is: ， Based on the achievable center bending radius The range can be determined. The range of values ​​for ; Determine key parameter variables , The range of values ​​is defined as the duct resistance value as the objective function. ， The constraints are as follows: ， The range of values ​​is: ， ， The optimal value can be solved using MATLAB's built-in genetics toolbox.

6. A compartment-separated ventilation duct system according to claim 5, characterized in that, The power compensation for the equipment area of ​​the compensation fan (7) is calculated through the following steps: System air supply volume calculation: Based on the transient heat exchange characteristics of the cabin, considering the total cooling power of the air conditioner and the target temperature of the inlet and outlet air vents, the required air supply volume of the air conditioner can be assessed. The formula for calculating the air volume is as follows: ， in, To meet the required airflow inside the cabin, For air conditioning cooling capacity, The specific heat capacity of air, air density, The target return air temperature for the air conditioner, The target air outlet temperature for the air conditioner; System duct resistance calculation: By combining the PQ curve of the air conditioner's outlet fan with the duct resistance equation, the airflow of the air conditioner's outlet fan can be calculated. ; The PQ curve of an air conditioner is a monotonically decreasing curve in the first quadrant of the pressure-flow coordinate system. The PQ curve can be fitted using a 5th-order equation from the polyfit function in MATLAB. ， And establish the relationship between flow rate and speed: ， When the pressure and flow rates of the PQ curve equation for the air conditioner's outlet fan and the resistance equation for the duct are equal (i.e., when the two curves intersect), the airflow rate of the air conditioner's outlet fan in that duct can be calculated. Solve using the following formula : 。 7. A compartment-separated ventilation duct system according to claim 6, characterized in that, The equipment area power compensation of the compensation fan (7) also includes: Fan selection and air volume boundary calculation: When the air conditioning requires air volume Less than the actual air conditioning air volume At that time, it is necessary to add an outlet fan, which can be sought at the contact point. Duct resistance value under air volume conditions : ， Solve for the pressure demand value at this time. Check the PQ curve of the outlet fan to be selected. Air volume of a single outlet fan under pressure value When the fan's air volume Greater than If so, the selected number and model of fans will meet the design requirements.

8. A method for wind speed monitoring and dynamic compensation in a compartment-separated ventilation duct system, characterized in that, The application of a compartment-separated air duct system as described in any one of claims 1-7 includes the following steps: The wind speed and temperature data of the equipment area are collected in real time by the wind speed / wind pressure sensor (2) and the equipment area temperature sensor (5); The central controller (6) receives the data and calculates the air volume requirement of the equipment area; The central controller (6) compares the calculated air volume demand with the current monitored air volume and generates control commands; The central controller (6) sends control commands to the compensation fan (7) to dynamically adjust its speed in order to provide power compensation airflow to the equipment area.

9. The method for wind speed monitoring and dynamic compensation of a compartment-separated air duct system according to claim 8, characterized in that, It also includes the following steps: The passenger area temperature data is collected in real time by the passenger area temperature sensor (8); The central controller (6) generates adjustment instructions for the air conditioner (1) based on the passenger area temperature data, and controls its air output parameters so that the passenger area temperature is prioritized to reach and maintain within the comfort range.

10. The method for wind speed monitoring and dynamic compensation of a compartment-separated air duct system according to claim 8, characterized in that, The regulation of the air conditioner (1) and the compensating fan (7) follows a hierarchical decision-making mechanism: First, with the temperature in the passenger area as the control target, the air outlet speed and temperature of the air conditioner (1) are adjusted in a closed loop; Then, under the premise that the temperature in the crew area is stable, the speed of the compensation fan (7) is adjusted in a closed loop with the temperature and wind speed in the equipment area as constraints.

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