A mobile cold radiation system

Abstract

This invention provides a mobile radiant cooling system, belonging to the technical field of heat exchange equipment. The system's mobile radiant heat exchanger assembly is located indoors, while the high-temperature chilled water unit is located outdoors. The mobile radiant heat exchanger assembly is connected to a terminal water distribution module via flexible pipes. The high-temperature chilled water unit is also connected to the terminal water distribution module. The cooling medium generated by the high-temperature chilled water unit is transported to the mobile radiant heat exchanger assembly through the terminal water distribution module; this cooling medium is driven to flow by a circulation drive device. By installing an angle adjustment device in the mobile radiant heat exchange terminal, the radiant panels can be adjusted for tilting and swaying, and the radiation direction is dynamically adjusted based on personnel location recognition results, thereby concentrating the radiant cooling effect more effectively in the area where personnel are actually active. Compared to fixed radiant terminals, this solution effectively reduces the cooling output in ineffective spaces and significantly improves the thermal comfort of personnel in localized areas.

Description

Technical Field

[0001] This invention provides a mobile cold radiation system, belonging to the technical field of heat exchange equipment. Background Technology

[0002] Existing radiant cooling systems typically use fixed installations for their radiant panels or terminals, making their radiation direction and coverage area essentially unadjustable after installation. When the positions of people indoors change or their distribution is uneven, fixed radiant terminals struggle to provide targeted cooling to the actual activity areas, easily leading to localized overcooling or insufficient cooling, thus limiting both cooling efficiency and thermal comfort.

[0003] Most existing radiant cooling or air conditioning terminal systems are controlled primarily based on indoor air temperature or average radiant temperature, lacking the ability to sense the presence and specific location of people indoors in real time. When there are no people or a small number of people indoors, the system may still maintain a high cooling output, resulting in unnecessary energy consumption; while in areas where people are close or concentrated, the system struggles to provide timely and targeted cooling compensation, exhibiting a lag in response.

[0004] While some existing adjustable terminal devices possess angle adjustment mechanisms, the adjustment process typically relies on manual operation or simple timer control, failing to establish a closed-loop linkage with personnel location and environmental sensing. The lack of intelligent correlation between angle adjustment and actual cooling demand hinders the full realization of the potential advantages of radiant cooling in directional cooling and energy conservation.

[0005] Existing radiant cooling systems mainly rely on static parameters or simple threshold control in their control strategies, failing to comprehensively utilize information such as personnel status, spatial heat distribution, and system operating status for dynamic optimization and adjustment. This results in low operating efficiency under complex conditions, and the overall energy-saving potential has not been fully realized. Summary of the Invention

[0006] Based on the above problems, the present invention proposes a mobile radiant cooling panel system, which aims to solve the technical pain points of traditional radiant cooling systems, such as easy condensation in high humidity environments, slow response, and inconvenient connection under mobile conditions, by leveraging the mobility of the terminal and the active adaptive capability of the environment.

[0007] The present invention adopts the following technical solution: The present invention discloses a mobile radiant cooling system, comprising a mobile radiant heat exchanger assembly; the mobile radiant heat exchanger assembly is used to provide a cooling source in different areas of an indoor space; End-point water collection and distribution module; the end-point water collection and distribution module is used to connect indoor equipment and outdoor equipment; Flexible conduit; the flexible conduit is used to transport cooling medium; A circulating drive unit; used to drive the cooling medium to flow in a circulating loop. High-temperature chilled water unit; the high-temperature chilled water unit is used to provide cooling medium; The mobile radiant heat exchange terminal is located indoors, while the high-temperature chilled water unit is located outdoors; the terminal water distribution module is installed on the wall. The mobile radiant heat exchanger assembly is connected to the terminal water distribution module via the flexible pipe; the high-temperature chilled water unit is connected to the terminal water distribution module. The cooling medium generated by the high-temperature chilled water unit is transported to the mobile radiant heat exchanger assembly through the terminal water collection and distribution module; the cooling medium is driven to flow by the circulation drive device. The length of the flexible pipe extends or contracts as the movable radiant heat exchanger assembly moves.

[0008] The mobile radiant cooling system of the present invention includes a terminal water collection and distribution module comprising a liquid supply interface and a liquid return interface equipped with a self-sealing quick connection mechanism. Both the liquid supply interface and the liquid return interface adopt an interlocking self-sealing quick-connect flat-end valve structure; the liquid supply interface and the liquid return interface are used to form a detachable cooling medium circulation path with the flexible pipeline.

[0009] The mobile radiant cooling system of the present invention further includes a low-voltage control wall box; the low-voltage control wall box is embedded in the wall. The low-voltage control wall box includes: A control module containing a data processing / control unit and a control output interface; A sensor signal receiving module containing a communication interface and a BMS communication interface; The liquid supply interface and the liquid return interface are both electrically connected to the control module, so that the sensor signal receiving module can obtain the connection status information of the flexible pipeline. The BMS communication interface is electrically connected to the data processing / control unit and is used to receive environmental parameters and operating status information transmitted by the building BMS system. The data processing / control unit analyzes the received data and makes control decisions, and generates control commands; The control output interface is electrically connected to the data processing / control unit and is used to output control commands to the system's execution equipment to realize the operation control of equipment such as solenoid valves, water pumps or regulating mechanisms, thereby realizing the linkage control between the mobile radiant cooling system and the building BMS system. The terminal water distribution module and the low-voltage control wall box are also equipped with an automatic spring-loaded hidden cover to protect the liquid supply interface, liquid return interface, communication interface, and control module.

[0010] The mobile radiant cooling system of the present invention includes a circulation drive device comprising a throttle valve, a water pump, a second solenoid valve, a high-temperature chilled water unit, and a mixing valve. The high-temperature chilled water unit is connected to the liquid supply interface and the liquid return interface through the liquid supply pipeline and the return pipeline, respectively. The liquid supply pipeline is connected in series with a proportional regulating valve and a solenoid valve along the liquid supply direction, and is connected to the high-temperature chilled water unit. The return pipeline is connected in series with the water pump and the second solenoid valve along the return direction, and is connected to the high-temperature chilled water unit; the supply pipeline and the return pipeline are connected in parallel with a mixing valve.

[0011] The present invention discloses a mobile cold radiation system, wherein the mobile radiation heat exchange plate assembly includes an infrared sensor, a radiation heat exchange plate, a micro fan, a pitch adjustment mechanism, a horizontal rotation adjustment mechanism, a mobile support wheel assembly, a pitch adjustment sensor, and a horizontal rotation sensor. The mobile support wheel assembly is equipped with a pitch adjustment mechanism and a horizontal rotation adjustment mechanism. The radiant heat exchange plate is located on the movable support wheel assembly; A pitch adjustment mechanism for adjusting the pitch angle of the radiant heat exchanger plate; a horizontal rotation adjustment mechanism for driving the radiant heat exchanger plate to rotate horizontally. An infrared sensor for collecting heat source signals is located at the top of the radiant heat exchange plate, and several miniature fans and air ducts are arranged in an array at the bottom of the radiant heat exchange plate. When the indoor humidity exceeds a preset threshold, a light breeze is used to disrupt the saturated air layer at the edge of the radiant surface.

[0012] The mobile cold radiation system of the present invention includes a radiation heat exchange plate comprising a radiation heat exchange layer, a heat conduction layer, a phase change cold storage layer, a cooling medium flow layer, and a structural support back plate. The structural support back plate serves as the base plate, the radiative heat exchange layer is the outward contact surface, and a heat-conducting layer, a phase change cold storage layer, and a cooling medium flow layer are sequentially arranged between the structural support back plate and the radiative heat exchange layer.

[0013] The mobile radiant cooling system of the present invention also includes an anti-condensation controller, which periodically collects the indoor dry-bulb temperature. Indoor relative humidity And calculate the indoor dew point temperature. Its anti-condensation algorithm is as follows: recent N The linear trend of the dew point sequence over several periods is expressed as follows:

[0014] In the formula, The dew point trend value at time k, in °C; The indoor dew point temperature measured during the kth sampling period is expressed in °C. For the first The indoor dew point temperature measured in ℃ during each sampling period; N is the number of sampling periods used in the trend calculation. The time interval between two adjacent sampling periods; For the first The indoor dew point temperature predicted for each sampling period, in °C; i is the number of time steps for forward prediction. Based on the weather forecast and fresh air infiltration data from the building's BMS system, a coupling coefficient is introduced using the linear trend of the aforementioned periodic dew point as a disturbance term. The revised expression is as follows:

[0015] In the formula, For the first The indoor dew point prediction temperature after correction for each sampling period, in °C; The first provision for building BMS systems Predicted outdoor dew point temperature for each sampling period, in °C; The actual outdoor dew point temperature during the k-th sampling period, in °C; This is a coupling correction coefficient, used to characterize the degree of influence of outdoor weather changes on indoor dew point changes, and is determined according to building characteristics; Find the maximum dew point within the future prediction window:

[0016] In the formula, The maximum dew point temperature is expressed in °C; M represents the number of prediction periods contained within the prediction time window. Set condensation safety margin :

[0017] In the formula, The lowest dew point temperature, in °C; The unit for condensation safety margin is °C. The target water supply temperature can be derived from the surface safety temperature using the following formula:

[0018] In the formula, The surface temperature of the radiant plate is expressed in °C. The temperature of the cooling medium supplied to the radiant plate, in °C; The equivalent heat transfer temperature difference during the radiant plate heat exchange process is expressed in °C. in, The equivalent heat exchange temperature difference (which can be obtained through calibration or is related to flow rate) is the minimum target for water supply:

[0019] In the formula, This is the lowest water supply temperature, in °C. If there is a cold water source With bypass / return water temperature The mixing ratio of the mixing valve :

[0020] In the formula, For water supply temperature, Unit: °C; represents the mixing ratio. The outlet water temperature is in °C. The return water temperature is expressed in °C.

[0021] When a risk of condensation is predicted, the proportional control valve control strategy is set as follows: like This reduces the flow rate / closes the valve slightly, increasing the surface temperature; among which, Water supply temperature, in °C. This represents the minimum water supply temperature, expressed in °C.

[0022] If there is no risk, the valve will be opened according to the load requirements.

[0023] The mobile cooling radiation system of this invention uses an infrared array image recognition algorithm to identify and locate indoor personnel based on the two-dimensional temperature distribution data output by the infrared sensor (1); the identification and location steps are as follows: Step 1: The infrared array sensor outputs a two-dimensional temperature matrix. Establish and maintain the background temperature matrix. The background temperature matrix The moving average update is used, and the expression is as follows:

[0024] In the formula, This is the estimated background temperature value at the t-th sampling time. For the first Background temperature estimate at each sampling time; This represents the actual temperature value of the infrared array pixel at the current sampling moment; Take a value between 0.9 and 0.99; The background temperature model is built based on historical infrared array data and is slowly updated over time; Based on two-dimensional temperature matrix Background temperature matrix Temperature difference matrix:

[0025] Smoothing filter: right Perform 3×3 mean or median filtering to reduce single outliers.

[0026] Step 2: Based on the temperature distribution data output by the infrared array sensor in Step 1, compare the temperature distribution data with the background temperature matrix. By comparison, pixels with temperatures higher than the background threshold are identified, and spatially adjacent high-temperature pixels are merged to form a continuous heat source region. This continuous heat source area serves as a candidate area for human body identification and location analysis in subsequent processes. Step 3: Based on the human body candidate regions in Step 2, process each candidate region... Calculate area Maximum temperature difference ;

[0027] Temperature difference energy:

[0028] Centroid coordinates:

[0029] Then use rules to filter out false targets: for example Too small Too low (non-human heat source), overly discrete shape, etc., area Set by an infrared sensor; Step 4: Establish the correspondence between the infrared array and the rotation axis of the radiating plate from the centroid coordinates to the personnel azimuth angle: the horizontal field of view of the array is... The vertical field of view is If the array width and height are W and H respectively, then the deflection angle of target k can be approximated linearly: Horizontal deflection angle, also known as the target angle of head tilt:

[0030] Vertical deflection angle is the angle of elevation of the target:

[0031] The control module then performs closed-loop adjustments based on the current angle of the gimbal, so that the normal direction of the radiating plate approaches the target tilt angle. Pitch target angle . Beneficial effects

[0032] This invention provides a mobile radiant cooling panel system. By incorporating an angle adjustment device in the mobile radiant heat exchange terminal, the radiant panel can be adjusted for tilting and swaying. Furthermore, the radiation direction is dynamically adjusted based on personnel location identification results, thereby concentrating the radiant cooling effect more effectively in the area where personnel are actually active. Compared to fixed radiant terminals, this solution effectively reduces the cooling output in ineffective spaces and significantly improves the thermal comfort of personnel in localized areas.

[0033] This invention provides a mobile radiant cooling panel system that uses an infrared array sensor to acquire indoor heat distribution information and an image recognition algorithm to identify the presence and relative position of people. This method eliminates the need for visible light cameras, is independent of lighting conditions, and offers advantages such as privacy and environmental adaptability. It can operate stably for extended periods in various scenarios, including offices and residences, providing a reliable sensing foundation for intelligent control of radiant cooling terminals.

[0034] This invention provides a mobile radiant cooling panel system that organically combines personnel perception, control decisions, and radiant panel angle and cooling output adjustment to form a closed-loop control mechanism. When the location or number of personnel changes, the system can promptly adjust the radiation direction and operating status, reducing the response lag problem of traditional systems and making the cooling effect more timely and precise.

[0035] This invention provides a mobile cold radiant panel system. The system's structure clearly defines the signal receiving interface, control module, and actuator, facilitating system integration and functional expansion. The infrared array sensing, angle adjustment device, and control strategy employed can be flexibly configured according to different application scenarios, making it suitable for offices, conference rooms, and other indoor environments requiring localized comfort adjustment.

[0036] By implementing directional radiative cooling only when people are detected or approaching, and reducing cooling output when no one is present or people are far away, this application effectively reduces unnecessary cooling consumption. Compared to traditional cooling methods based on overall space control, this application helps reduce system operating energy consumption and improve energy efficiency while ensuring thermal comfort.

[0037] The present invention provides a mobile radiant cooling panel system that combines human perception, spatial heat distribution analysis and radiant cooling terminal control, enabling the radiant cooling system to transform from a passive and static operation mode to an active and adaptive operation mode, providing a new technical path for the intelligent application of radiant cooling systems. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the control flow of the mobile cold radiant panel system of the present invention.

[0039] Figure 2 This is a schematic diagram of the mobile cold radiation panel system of the present invention.

[0040] Figure 3 This is a schematic diagram of the end water collection and distribution module of the mobile cold radiant panel system of the present invention.

[0041] Figure 4 This is a schematic diagram of the radiant heat exchange plate structure of the mobile cold radiant plate system of the present invention. Detailed Implementation

[0042] To make the objectives and technical solutions of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0043] like Figure 1 , Figure 2 As shown: The present invention provides a mobile radiant cooling system, which mainly consists of a mobile radiant heat exchanger assembly, a terminal water distribution module 10, a flexible pipe 9, a circulation drive device, and a high-temperature chilled water unit 16. Through the cooperation of the mobile radiant heat exchanger assembly and the flexible pipe 9, the system realizes the free arrangement of cooling terminals within a predetermined range indoors, meeting personalized and localized cooling needs.

[0044] The mobile radiant heat exchanger assembly is used to provide a cooling source in different areas of the room; the terminal water distribution module 10 is used to connect indoor equipment and outdoor equipment; the flexible pipe 9 is used to transport the cooling medium; A circulation drive device is used to drive the cooling medium to flow in the circulation loop; a high-temperature chilled water unit is used to provide the cooling medium; a mobile radiant heat exchange terminal 1 is located in the indoor area, and the high-temperature chilled water unit is located outdoors; a terminal water distribution module 10 is provided on the wall; the mobile radiant heat exchange plate assembly is connected to the terminal water distribution module through the flexible pipe; the high-temperature chilled water unit 16 is connected to the terminal water distribution module 10. The cooling medium generated by the high-temperature chilled water unit 16 is delivered to the mobile radiant heat exchange plate assembly through the terminal water distribution module 10; the cooling medium is driven to flow by the circulation drive device.

[0045] The technical support for the mobile radiant cooling system of this invention begins with the terminal water distribution module 10 and the low-voltage control wall box 11, which serve as interface nodes for fluid, electrical, and control functions, hereinafter referred to as the "intelligent wall box". This intelligent wall box is integrated into the building structure, and its function is not limited to physical connection, but also serves as a data bridge between the terminal and the overall building environment.

[0046] The terminal water distribution module 10 includes a liquid supply interface 101 and a liquid return interface 102 equipped with a self-sealing quick-connect mechanism. At the physical connection level, both the liquid supply interface 101 and the liquid return interface 102 adopt an interlocking self-sealing quick-connect flat-end valve structure; the liquid supply interface 101 and the liquid return interface 102 are used to form a detachable cooling medium circulation path with the flexible pipe 9.

[0047] Existing technologies have disclosed flat-face / flush-face quick-connect devices, such as the hydraulic quick-connect coupling described in the document "Design and Numerical Simulation-Based Optimization of a Novel Flat-Face Coupling System for Hydraulic Power Equipment" (Appl. Sci. 2021, 11, 388). These devices reduce fluid leakage upon disconnection by incorporating a self-sealing valve structure within the coupling. However, these devices are primarily used in the field of hydraulic equipment and have not been structurally integrated or functionally expanded for fixed access scenarios of mobile radiant cooling systems. This structure, through its unique flat sealing surface design, ensures "zero leakage" at the moment of disconnection between the plug and socket, eliminating the pollution of the indoor environment caused by cooling medium leakage. At the data level, the smart wall box achieves deep integration with the building's BMS (Building Management System) through its built-in communication interface. The controller obtains real-time meteorological data from outside the building (such as outdoor dew point temperature prediction and ambient humidity trends) and the cooling conditions on the building side through the smart wall box. These host computer data provide the necessary prior parameters for the precise control of the terminal system.

[0048] The mobile radiant heat exchanger assembly includes an infrared sensor 1, a radiant heat exchanger 2, a miniature fan 3, a pitch adjustment mechanism 4, a horizontal rotation adjustment mechanism 5, a mobile support wheel assembly 6, a pitch adjustment sensor 7, and a horizontal rotation sensor 8. The mobile support wheel assembly 6 is equipped with the pitch adjustment mechanism 4 and the horizontal rotation adjustment mechanism 5. The radiant heat exchanger 2 is located on the mobile support wheel assembly 6. The pitch adjustment mechanism 4 is used to adjust the pitch angle of the radiant heat exchanger 2, and the horizontal rotation adjustment mechanism 5 is used to drive the radiant heat exchanger 2 to rotate horizontally. An infrared sensor 1 for collecting heat source signals is located at the top of the radiant heat exchanger 2.

[0049] The circulating drive device includes a throttle valve 13, a water pump 14, a second solenoid valve 15, a high-temperature chilled water unit 16, and a mixing valve 17. The high-temperature chilled water unit 16 is connected to a liquid supply interface 101 and a liquid return interface 102 through a liquid supply pipeline and a return pipeline, respectively. The liquid supply pipeline is connected in series with a proportional regulating valve 12 and a first solenoid valve 13 along the liquid supply direction and is connected to the high-temperature chilled water unit 16. The return pipeline is connected in series with a water pump 14 and a second solenoid valve 15 along the return direction and is connected to the high-temperature chilled water unit 16. The liquid supply pipeline and the return pipeline are connected to the mixing valve 17.

[0050] like Figure 3 As shown, the low-voltage control wall box 11 includes a control module 114 containing a data processing / control unit 117 and a control output interface 118, and a sensor signal receiving module 115 containing a communication interface 113 and a BMS communication interface 116; the liquid supply interface 101 and the liquid return interface 102 are both electrically connected to the control module 114, so that the sensor signal receiving module 115 can obtain the connection status information of the flexible pipe 9.

[0051] The BMS communication interface 116 is electrically connected to the data processing / control unit 117 and is used to receive environmental parameters and operating status information transmitted by the building BMS system. The data processing / control unit 117 analyzes and makes control decisions on the received data and generates control commands. The control output interface 118 is electrically connected to the data processing / control unit 117 and is used to output control commands to the system's execution devices to realize the operation control of devices such as solenoid valves, water pumps, or regulating mechanisms, thereby realizing the linkage control between the mobile radiant cooling system and the building BMS system. The terminal water distribution module 10 and the low-voltage control wall box 11 are also equipped with automatic spring-loaded hidden covers for protecting the liquid supply interface 101, the liquid return interface 102, the communication interface 113, and the control module 114.

[0052] When not plugged in, the liquid supply port 101 and the liquid return port 102 are disconnected, their internal self-sealing structure remains closed, and the control module 114 controls the cooling medium passage to close to prevent cooling medium leakage.

[0053] When the mobile radiant heat exchange terminal is plugged into the fixed access device, the control output interface 118 and the communication interface 113 first establish an electrical connection, enabling the control module 114 to obtain the connection status information of the terminal. However, before the liquid supply interface 101 and the liquid return interface 102 have completed mechanical locking, the control module 114 continuously maintains closed control of the cooling medium passage. Even if the control output interface 118 and the communication interface 113 are connected, cooling medium is not allowed to flow in, thereby avoiding the risk of accidental liquid flow or liquid spraying when the interface is not fully plugged in.

[0054] When both the liquid supply interface 101 and the liquid return interface 102 are fully connected and reach the preset mechanical locking state, the locking structure inside the interface triggers the corresponding locking state signal, which is transmitted to the control module 114 through the communication interface 113 or the internal line.

[0055] After confirming that both the liquid supply interface 101 and the liquid return interface 102 are in a fully locked state, the control module 114 allows the corresponding fluid on / off actuator to be opened, so that the cooling medium enters the mobile radiant heat exchange terminal through the liquid supply interface (1) and returns through the liquid return interface 102, forming a complete and safe cooling medium circulation loop.

[0056] During use, when any liquid supply port 101 or liquid return port 102 is unlocked or pulled out, the control module 114 first controls the closure of the cooling medium passage, so that the cooling medium in the circulation loop stops flowing. Only then is the port allowed to be completely separated, thereby realizing the reverse interlock control of "first cut off the liquid, then disconnect", which further improves the safety and reliability of the system under frequent plugging and unplugging and moving conditions.

[0057] Therefore, through the coordinated linkage between the liquid supply interface 101, the liquid return interface 102, the control output interface 118, the communication interface 113, and the control module 114, a mechanical-electrical interlock mechanism based on the mechanical state of the interface is realized, ensuring that the cooling medium is only allowed to enter when the interface is fully mechanically locked. The specific program judgment conditions are as follows: step physical state Sensor status Electrical / fluid action initial state disconnect Sensor open circuit When the solenoid valve is closed, the power output is cut off. In progress Inserted but not locked Sensor not activated The system reported an error and water supply was suspended. Locked state Mechanical locking completed Induction signal closed The solenoid valve opens, establishing a cycle. abnormal state loose mechanical connection Signal lost instantly The fluid is cut off within seconds, triggering the recovery process. The control focus of this system lies in its predictive anti-condensation algorithm. Unlike traditional "hysteresis regulation" based on real-time value feedback, this algorithm obtains real-time indoor parameters through the environmental monitoring unit integrated in the terminal and performs correlation analysis in conjunction with the BMS big data transmitted by the smart wall box.

[0058] The core calculation approach is as follows: the controller constructs a dew point evolution model of the indoor microenvironment based on historical humidity fluctuation trends and future weather forecast curves. When the model predicts that indoor humidity is about to reach a critical point due to environmental fluctuations (such as the introduction of fresh air or a surge in outdoor humidity), the system will proactively adjust the actuators (such as proportional control valves or variable frequency pumps) to increase the temperature of the circulating medium or optimize the flow rate before the risk of condensation occurs. This predictive adjustment based on big data enables the mobile terminal to have extremely high operational stability in changing indoor environments.

[0059] The anti-condensation algorithm is based on the anti-condensation controller periodically collecting indoor dry-bulb temperature data. Indoor relative humidity And calculate the indoor dew point temperature. ; recent NThe linear trend of the dew point sequence over several periods is expressed as follows:

[0060] In the formula, The dew point trend value at time k, in °C; The indoor dew point temperature measured during the kth sampling period is expressed in °C. For the first The indoor dew point temperature measured in ℃ during each sampling period; N is the number of sampling periods used in the trend calculation. The time interval between two adjacent sampling periods; For the first The indoor dew point temperature predicted for each sampling period, in °C; i is the number of time steps for forward prediction. Based on the weather forecast and fresh air infiltration data from the building's BMS system, a coupling coefficient is introduced using the linear trend of the aforementioned periodic dew point as a disturbance term. The revised expression is as follows:

[0061] In the formula, For the first The indoor dew point prediction temperature after correction for each sampling period, in °C; The first provision for building BMS systems Predicted outdoor dew point temperature for each sampling period, in °C; The actual outdoor dew point temperature during the k-th sampling period, in °C; This is a coupling correction coefficient, used to characterize the degree of influence of outdoor weather changes on indoor dew point changes, and is determined according to building characteristics; Find the maximum dew point within the future prediction window:

[0062] In the formula, Maximum dew point temperature, in °C; M The number of forecast periods contained within the forecast time window; Set condensation safety margin :

[0063] In the formula, The lowest dew point temperature, in °C; The unit for condensation safety margin is °C. The target water supply temperature can be derived from the surface safety temperature using the following formula:

[0064] In the formula, The surface temperature of the radiant plate is expressed in °C. The temperature of the cooling medium supplied to the radiant plate, in °C; The equivalent heat transfer temperature difference during the radiant plate heat exchange process is expressed in °C. in, The equivalent heat exchange temperature difference (which can be obtained through calibration or is related to flow rate) is the minimum target for water supply:

[0065] In the formula, This is the lowest water supply temperature, in °C. If there is a cold water source With bypass / return water temperature The mixing ratio of the mixing valve :

[0066] In the formula, Water supply temperature, in °C; The mixing ratio; The outlet water temperature is in °C. The return water temperature is expressed in °C.

[0067] When a risk of condensation is predicted, the proportional control valve control strategy is set as follows: like If the flow rate is reduced or the valve is closed, the surface temperature will be increased. Water supply temperature, in °C. This is the minimum water supply temperature, in °C. If there is no risk, open the valve according to load demand.

[0068] To compensate for the insufficient cooling capacity of radiative cooling in high humidity environments due to the reduced temperature difference, a micro-wind auxiliary unit was designed as a physical compensation method. Based on Figure 2 The structure consists of several miniature fans 3 and air ducts arranged in an array at the bottom of the radiant heat exchange plate 2; when the indoor humidity exceeds the preset threshold, the saturated air layer at the edge of the radiant surface is broken by the breeze.

[0069] The linkage logic between the system and the prediction algorithm is as follows: When the prediction algorithm determines that simply increasing the water supply temperature is insufficient to maintain the target cooling load indoors, the controller will actively activate the micro-wind assist unit. The low-speed airflow generated by this unit effectively breaks up the saturated air layer on the surface of the radiant panel, improving heat exchange efficiency through weak forced convection and physically reducing the local water vapor partial pressure on the panel surface. This design allows the system to maintain a certain cooling output even under extreme operating conditions, while ensuring that no condensation occurs on the outside of the panel.

[0070] To adapt to changes in physical state during movement, a phase change cooling layer is integrated into the radiant panel. This layer utilizes the enormous latent heat during the solid-liquid phase change process, acting as a "cold energy buffer." When the mobile terminal disconnects the quick connector for relocation, the phase change layer releases the stored cold energy, maintaining the low temperature of the panel surface and achieving seamless cooling output. Furthermore, the system integrates an active leak-proof subsystem. Through the pressure difference across the flexible pipe 9, the system can accurately detect even minor leaks. In the event of an anomaly, the controller immediately instructs the fixed connection device to cut off the fluid supply and drives the circulation device to perform reverse suction, rapidly recovering residual liquid in the pipes and comprehensively ensuring the safety of indoor operation.

[0071] The mobile cold radiation system of the present invention integrates an infrared array sensor (Grid-EYE) on the top or side of the radiative heat exchange terminal. Unlike traditional point-type pyroelectric sensors, this sensor is capable of acquiring a two-dimensional thermal distribution image of the indoor environment (e.g., an 8×8 or 16×16 pixel matrix).

[0072] The controller processes heat source pixel data fed back by infrared array sensors in real time, uses image recognition algorithms to locate the coordinates of people indoors, and calculates the relative distance between people and mobile terminals. Based on this sensing data, the system implements dynamic power control logic of "power increases when people are close and power decreases when people leave."

[0073] An infrared array image recognition algorithm is used to identify and locate people indoors based on the two-dimensional temperature distribution data output by infrared sensor 1; the identification and location steps are as follows: Step 1: The infrared array sensor outputs a two-dimensional temperature matrix. Establish and maintain the background temperature matrix. The background temperature matrix The moving average update is used, and the expression is as follows:

[0074] In the formula, This is the estimated background temperature value at the t-th sampling time. For the first Background temperature estimate at each sampling time; This represents the actual temperature value of the infrared array pixel at the current sampling moment; Take a value between 0.9 and 0.99; The background temperature model is built based on historical infrared array data and is slowly updated over time; Based on two-dimensional temperature matrix Background temperature matrix Temperature difference matrix:

[0075] Smoothing filtering: for Perform 3×3 mean or median filtering to reduce single outliers.

[0076] Step 2: Based on the temperature distribution data output by the infrared array sensor in Step 1, compare the temperature distribution data with the background temperature matrix. By comparison, pixels with temperatures higher than the background threshold are identified, and spatially adjacent high-temperature pixels are merged to form a continuous heat source region. Human body candidate region extraction is used to initially screen areas that may correspond to people from the temperature distribution data output by the infrared array. The control module identifies pixels with temperatures higher than the background threshold by comparing the current temperature data with the background temperature model, and merges spatially adjacent high-temperature pixels to form a continuous heat source region. This continuous heat source region serves as the human body candidate region for subsequent human identification and location analysis.

[0077] Since not all high-temperature areas correspond to the human body—for example, heat sources or localized environmental temperature changes can also create high-temperature areas—the human body candidate area is only a preliminary screening result and is not directly equivalent to the human target. By setting up a human body candidate area extraction step, the probability of misjudgment in subsequent judgment stages can be reduced while ensuring recognition efficiency.

[0078] When the infrared array sensor detects that a person is approaching the moving radiant panel (e.g., entering the preset 1.5-2 meter core radiation zone), the system automatically triggers the "high-efficiency cooling mode." Within the safe temperature threshold defined by the anti-condensation prediction algorithm, the controller instructs the regulating unit (such as a proportional control valve) to increase the refrigerant flow and lower the supply water temperature as close as possible to the dew point. By increasing the radiant temperature difference between the radiant panel and the human skin, the system can generate the strongest cold radiation flow in the localized area of ​​the person, quickly removing body heat and providing immediate thermal comfort.

[0079] Step 3: Based on the human body candidate regions in Step 2, process each candidate region... Calculate area Maximum temperature difference ;

[0080] Temperature difference energy:

[0081] Centroid coordinates:

[0082] Then use rules to filter out false targets: for example Too small Too low (non-human heat source), overly discrete shape, etc., area Set by an infrared sensor; When the infrared array sensor detects no activity within a predetermined range, the system automatically switches to "energy-saving standby mode" or "cold storage mode." The controller significantly increases the water supply temperature or reduces the circulation pump frequency to lower the instantaneous cooling power. If the system is equipped with a phase change cold storage layer, the cooling capacity in the circulation loop will be preferentially supplied to the phase change material for freezing and cooling. This "on-demand cooling" strategy not only avoids wasting cooling capacity in inactive spaces but also, through the intertemporal and spatial transfer of energy, reserves sufficient energy for the burst of cooling when people approach again.

[0083] Step 4: To further optimize the coverage effect of the radiation space, the mobile cooling radiation system of this invention, based on the pitch adjustment mechanism 4 and the horizontal rotation adjustment mechanism 5, adjusts the rotation angle of the radiation heat exchange plate 2. The controller, based on the personnel location information located by the infrared array sensor, drives the stepper motor to precisely adjust the horizontal rotation (0°-360°) or pitch angle (-15° to +45°) of the radiation plate body. Through real-time tracking of the physical angle, the system ensures that the normal direction of the radiation panel always points towards the core activity area of ​​the personnel, achieving "directional cooling" and greatly improving the utilization rate of cooling capacity.

[0084] Specifically, this involves establishing the correspondence between the infrared array and the rotation axis of the radiating plate, from the centroid coordinates to the personnel's azimuth angle: the array's horizontal field of view is... The vertical field of view is If the array width and height are respectively W , H Then the deflection angle of target k can be approximated linearly: Horizontal deflection angle, also known as the target angle of head tilt:

[0085] Vertical deflection angle is the angle of elevation of the target:

[0086] The control module then performs closed-loop adjustments based on the current angle of the gimbal, so that the normal direction of the radiating plate approaches the target tilt angle. Pitch target angle .

[0087] In addition to monitoring personnel, the infrared array sensor also acts as a non-contact "space thermometer," detecting the actual surface temperature of various objects within the radiant space. The controller combines this surface temperature data with the water outlet temperature of the panel itself to calculate the real-time average radiant temperature (MRT) of the room. The system uses this as feedback for closed-loop control, automatically fine-tuning the angle adjustment device and cooling power. Even when the personnel's position remains unchanged, if an increase in the temperature of the surrounding background wall is detected, the system will automatically increase the output of the radiant panels to maintain the overall thermal comfort level (PMV) of the target environment, ensuring that users are always in the most comfortable thermal environment.

[0088] The mobile radiant cooling system of the present invention can also be replaced by a low-temperature hot water preparation device to achieve the function of heat medium preparation. The generated heat medium is transported to the mobile radiant heat exchange plate assembly through the liquid supply pipeline and the return pipeline, so that the radiant heat exchange plate assembly can achieve directional radiant heat dissipation to people, realize the function of on-demand heating, and realize the switching between hot and cold in different environments and seasons, adapting to more application scenarios.

[0089] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A mobile cooling radiation system, characterized in that: Includes a movable radiant heat exchanger assembly; the movable radiant heat exchanger assembly is used to provide a cold source in different areas of the room; Terminal water collection and distribution module (10); the terminal water collection and distribution module (10) is used to connect indoor equipment and outdoor equipment; Flexible pipe (9); the flexible pipe (9) is used to transport cooling medium; A circulating drive unit; used to drive the cooling medium to flow in a circulating loop. High-temperature chilled water unit (16); the high-temperature chilled water unit (16) is used to provide cooling medium; The mobile radiant heat exchanger assembly is located in the indoor area, and the high-temperature chiller unit (16) is located outdoors; the terminal water distribution module (10) is located on the wall. The mobile radiant heat exchanger assembly is connected to the terminal water collection and distribution module (10) through the flexible pipe (9); the high-temperature chilled water unit (16) is connected to the terminal water collection and distribution module (10). The cooling medium generated by the high-temperature chiller unit (16) is transported to the mobile radiant heat exchanger assembly through the terminal water distribution module (10); the cooling medium is driven to flow by the circulation drive device. The length of the flexible pipe (9) extends or contracts as the movable radiant heat exchanger assembly moves.

2. The mobile radiant cooling system according to claim 1, characterized in that: The terminal water collection and distribution module (10) includes a liquid supply interface (101) and a liquid return interface (102) equipped with a self-sealing quick connection mechanism. The liquid supply interface (101) and the liquid return interface (102) both adopt an interlocking self-sealing quick-connect flat-end valve structure; the liquid supply interface (101) and the liquid return interface (102) are used to form a detachable cooling medium circulation path with the flexible pipe (9).

3. The mobile radiant cooling system according to claim 1 or 2, characterized in that: It also includes a low-voltage control wall box (11); the low-voltage control wall box (11) is embedded in the wall; The low-voltage control wall box (11) includes: A control module (114) containing a data processing / control unit (117) and a control output interface (118). A sensor signal receiving module (115) containing a communication interface (113) and a BMS communication interface (116). The liquid supply interface (101) and the liquid return interface (102) are both electrically connected to the control module (114), so that the sensor signal receiving module (115) can obtain the connection status information of the flexible pipe (9); The BMS communication interface (116) is electrically connected to the data processing / control unit (117) and is used to receive environmental parameters and operating status information transmitted by the building BMS system; The data processing / control unit (117) analyzes and makes control decisions on the received data and generates control commands; The control output interface (118) is electrically connected to the data processing / control unit (117) and is used to output control commands to the system's execution device; The terminal water collection and distribution module (10) and the low-voltage control wall box (11) are also equipped with automatic spring-loaded hidden covers for protecting the liquid supply interface (101), the liquid return interface (102), the communication interface (113), and the control module (114).

4. The mobile radiant cooling system according to claim 1 or 2, characterized in that: The circulating drive unit includes a throttle valve (13), a water pump (14), a second solenoid valve (15), a high-temperature chilled water unit (16), and a mixing valve (17); The high-temperature chilled water unit (16) is connected to the liquid supply interface (101) and the liquid return interface (102) through the liquid supply pipeline and the return pipeline, respectively. The liquid supply pipeline is connected in series with a proportional regulating valve (12) and a solenoid valve (13) along the liquid supply direction, and is connected to the high temperature chilled water unit (16). The return pipeline is connected in series with the water pump (14) and the solenoid valve (15) along the return direction, and is connected to the high temperature chilled water unit (16). A mixing valve (17) is connected in parallel to the liquid supply line and the return line.

5. The mobile radiant cooling system according to claim 1, characterized in that: The mobile radiant heat exchanger assembly includes an infrared sensor (1), a radiant heat exchanger (2), a micro fan (3), a pitch adjustment mechanism (4), a horizontal rotation adjustment mechanism (5), a mobile support wheel assembly (6), a pitch adjustment sensor (7), and a horizontal rotation sensor (8). The movable support wheel assembly (6) is provided with a pitch adjustment mechanism (4) and a horizontal rotation adjustment mechanism (5). The radiant heat exchange plate (2) is located on the movable support wheel assembly (6); A pitch adjustment mechanism (4) for adjusting the pitch angle of the radiant heat exchange plate (2), and a horizontal rotation adjustment mechanism (5) for driving the radiant heat exchange plate (2) to rotate horizontally. An infrared sensor (1) for collecting heat source signals is provided at the top of the radiant heat exchange plate (2), and several miniature fans (3) and air ducts are arranged in an array at the bottom of the radiant heat exchange plate (2). When the indoor humidity exceeds a preset threshold, a light breeze is used to disrupt the saturated air layer at the edge of the radiant surface.

6. The mobile radiant cooling system according to claim 5, characterized in that: The radiant heat exchange plate (2) includes a radiant heat exchange layer (21), a heat conduction layer (22), a phase change cold storage layer (23), a cooling medium flow layer (24), and a structural support back plate (25). The structural support back plate (25) serves as the base plate, the radiative heat exchange layer (21) serves as the outward contact surface, and a heat-conducting layer (22), a phase change cold storage layer (23), and a cooling medium flow layer (24) are arranged sequentially between the structural support back plate (25) and the radiative heat exchange layer (21).

7. The mobile radiant cooling system according to claim 1, characterized in that, It also includes an anti-condensation controller, which periodically collects the indoor dry-bulb temperature. Indoor relative humidity And calculate the indoor dew point temperature. Its anti-condensation algorithm is as follows: recent N The linear trend of the dew point sequence over several periods is expressed as follows: ； In the formula, The dew point trend value at time k, in °C; The indoor dew point temperature measured during the kth sampling period is expressed in °C. For the first The indoor dew point temperature measured in ℃ during each sampling period; N is the number of sampling periods used in the trend calculation. The time interval between two adjacent sampling periods; For the first The indoor dew point temperature predicted for each sampling period, in °C; i is the number of time steps for forward prediction. Based on the weather forecast and fresh air infiltration data from the building's BMS system, a coupling coefficient is introduced using the linear trend of the aforementioned periodic dew point as a disturbance term. The revised expression is as follows: ； In the formula, For the first The indoor dew point prediction temperature after correction for each sampling period, in °C; The first provision for building BMS systems Predicted outdoor dew point temperature for each sampling period, in °C; The actual outdoor dew point temperature during the k-th sampling period, in °C; This is a coupling correction coefficient, used to characterize the degree of influence of outdoor weather changes on indoor dew point changes, and is determined according to building characteristics; Find the maximum dew point within the future prediction window: ； In the formula, Maximum dew point temperature, in °C; M The number of forecast periods contained within the forecast time window; Set condensation safety margin : ； In the formula, The lowest dew point temperature, in °C; The unit is ℃, representing the safety margin for condensation. The target water supply temperature can be derived from the surface safety temperature using the following formula: ； In the formula, The surface temperature of the radiant plate is expressed in °C. The temperature of the cooling medium supplied to the radiant plate, in °C; The equivalent heat transfer temperature difference during the radiant plate heat exchange process is expressed in °C. in, Given the equivalent heat exchange temperature difference, the minimum target for water supply is: ； In the formula, This is the lowest water supply temperature, in °C. If there is a cold water source With bypass / return water temperature The mixing ratio of the mixing valve : ； In the formula, Water supply temperature, in °C; The mixing ratio; The temperature of the cold source outlet water is expressed in °C. Return water temperature, in °C; When a risk of condensation is predicted, the proportional control valve control strategy is set as follows: like If the flow rate is reduced or the valve is closed, the surface temperature will be increased. in, Water supply temperature, in °C. This is the lowest water supply temperature, in °C. If there is no risk, the valve will be opened according to the load requirements.

8. The mobile cooling radiation system according to claim 5, characterized in that, An infrared array image recognition algorithm is used to identify and locate indoor personnel based on the two-dimensional temperature distribution data output by an infrared sensor (1); the identification and location steps are as follows: Step 1: The infrared array sensor outputs a two-dimensional temperature matrix. Establish and maintain the background temperature matrix. The background temperature matrix The moving average update is used, and the expression is as follows: ； In the formula, This is the estimated background temperature value at the t-th sampling time. For the first Background temperature estimate at each sampling time; This represents the actual temperature value of the infrared array pixel at the current sampling moment; Take a value between 0.9 and 0.99; The background temperature model is built based on historical infrared array data and is slowly updated over time; Based on two-dimensional temperature matrix Background temperature matrix Temperature difference matrix: ； Step 2: Based on the temperature distribution data output by the infrared array sensor in Step 1, compare the temperature distribution data with the background temperature matrix. By comparison, pixels with temperatures higher than the background threshold are identified, and spatially adjacent high-temperature pixels are merged to form a continuous heat source region. This continuous heat source area serves as a candidate area for human body identification and location analysis in subsequent processes. Step 3: Based on the human body candidate regions in Step 2, process each candidate region... Calculate area Maximum temperature difference ; ； Temperature difference energy: ； Centroid coordinates: ； Step 4: Establish the correspondence between the infrared array and the rotation axis of the radiating plate from the centroid coordinates to the personnel azimuth angle: the horizontal field of view of the array is... The vertical field of view is If the array width and height are respectively W , H Then the deflection angle of target k can be approximated linearly: Horizontal deflection angle, also known as the target angle of head tilt: ； Vertical deflection angle is the angle of elevation of the target: ； The control module then performs closed-loop adjustments based on the current angle of the gimbal, so that the normal direction of the radiating plate approaches the target tilt angle. Pitch target angle .

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