A method and system for anti-condensation control based on a five-constant radiation air conditioning system

Abstract

This invention discloses an anti-condensation control method and system based on a five-constant radiant air conditioning system. The method includes real-time acquisition of the air temperature and relative humidity of each room within the control area to obtain the current dew point temperature; when only one room is operating and its RH ≥ 75%, the dew point temperature of that room is determined to be condensation-free. single There is a risk of condensation; when there are two or more operating rooms, iterate through all operating rooms and calculate and remove R. max Average dew point DP after avg and the dew point difference ΔDP; if simultaneously ΔDP≥N and RH max If ≥70%, then the room R is judged to be... max There is a risk of condensation; for rooms R that are judged to have a risk of condensation... max Perform the shutdown of the electric water valve at the radiant end of the room, and turn off the R in the room. max Remove rooms from the list of rooms currently in operation during the current control cycle until none of them meet the condensation risk triggering conditions.

Description

Technical Field

[0001] This invention relates to the field of five-constant radiant air conditioning system technology, specifically to an anti-condensation control method and system based on a five-constant radiant air conditioning system. Background Technology

[0002] The five-constant radiant air conditioning system is a new generation of indoor climate system that relies on low-temperature radiant heat exchange core technology and deeply integrates fresh air humidity control, intelligent sensing, and precise temperature control modules. Completely different from traditional air conditioning products that rely on forced convection, it can achieve a five-dimensional comfort experience of constant temperature, constant humidity, constant oxygen, constant cleanliness, and constant quietness. It is currently widely used in high-end residences, Grade A offices, and health and wellness spaces. Its core operating logic is as follows: using capillary radiant terminals pre-embedded in the walls / ceiling as the heat carrier, it delivers precisely temperature-controlled low-temperature / high-temperature water to form a uniform, temperature-differential-free radiant heat exchange surface indoors, directly exchanging heat gently with people and furniture. Combined with a micro-positive pressure replacement fresh air system, it simultaneously completes whole-house air replacement and dynamic humidity control, ultimately achieving a stable indoor comfort environment balance throughout the year. However, the radiant terminals often operate at temperatures below the indoor air dew point, and the risk of condensation remains a core pain point in the industry's operation and control.

[0003] The existing publicly available anti-condensation technologies for radiant air conditioning all adopt independent control logic for each room: each room is equipped with a separate temperature and humidity sensor, and the dew point temperature is calculated based solely on the temperature and humidity data of the room. When the difference between the surface temperature of the radiant panel and the dew point is lower than the set threshold, the water supply circuit of that room is cut off or the flow rate is reduced. However, such schemes have the following inherent defects: (1) When multiple rooms in the same water circuit zone trigger valve closing actions frequently and synchronously, it is very easy to cause hydraulic imbalance in the system, resulting in significant fluctuations in the cooling / heating flow of the other normally operating rooms, and a significant decrease in the overall operational stability of the system; (2) If there is an extreme working condition where multiple rooms open windows at the same time to introduce high humidity air, the independent control logic for each room is prone to missing judgments and cannot synchronously identify all high-risk rooms, which poses a safety hazard of condensation on the local radiant surface. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, one of the objectives of this invention is to provide an anti-condensation control method based on a five-constant radiant air conditioning system, thereby solving the aforementioned traditional problems.

[0005] The second objective of this invention is to provide an anti-condensation control system based on the above-mentioned anti-condensation control method.

[0006] One of the objectives of this invention is achieved through the following technical solution: A method for preventing condensation control based on a five-constant radiant air conditioning system includes the following steps: S1: Based on the water pipe network layout of the five-constant radiant air conditioning system, all radiant terminal rooms sharing the same water supply network are divided into the same control area Z. j Each control region Z j It contains at least one radiation terminal room; S2: For control region Z j In each radiant terminal room, the air temperature T in that room is collected in real time. i and relative humidity (RH) i The current dew point temperature DP of each room is calculated using the dew point calculation formula. i ; S3: When the control area Z j If there is only one operating room and the relative humidity (RH) of that room is ≥75%, then the room is considered to have a high relative humidity (RH). single There is a risk of condensation. When the control region Z j If there are two or more rooms currently in operation, traverse the control area Z. j Filter out the rooms with the highest dew point temperature DP from all currently operating rooms. max Room R max Calculate and remove R max Post-control area Z j Average dew point DP of remaining operating rooms avg and the dew point difference ΔDP; if simultaneously ΔDP≥N and room R max Relative humidity (RH) max If ≥70%, then the room R is judged to be... max There is a significant risk of localized condensation. S4: For rooms R that are deemed to have a risk of condensation single If so, the electric water valve at the radiant end of the room will be shut off, stopping the cold water supply; For room R, which is deemed to have a risk of condensation. max Perform the shutdown of the electric water valve at the radiant end of the room, stop the cold water supply, and turn off the room's R... max Remove from the list of rooms currently in operation within the current control cycle, return to step S3, and control region Z. j The remaining operating rooms in the area are re-evaluated for condensation risk, and this process is repeated until all operating rooms in the area no longer meet the condensation risk triggering conditions.

[0007] Preferably, in step S1, j = 1 to m, where m is a positive integer.

[0008] Preferably, in step S2, i = 1 to mm, where mm is a positive integer.

[0009] Preferably, in step S2, the current dew point temperature DP i The formula for calculating the dew point is: ; Among them, E sw = 0.61078 × exp( (17.27 × T i ) / (T i + 237.3), current air temperature T i The saturated vapor pressure at T is expressed in kPa. i The current room air temperature is expressed in °C (RH). i The current room relative humidity is expressed as a percentage (%).

[0010] Preferably, in step S3, ΔDP = DP max -DP avg ; , where DP avg To remove R max Post-control area Z j The average dew point temperature of the remaining operating rooms in the area, in °C; n is the total number of all remaining radiant terminal rooms in normal operation within the area, where n is a positive integer; DP i Remove R from this area max The real-time dew point temperature of the i-th normally operating room, in °C; DP max The highest dew point temperature, in °C, is the highest dew point temperature of all radiant terminal rooms in the region that are in normal operating condition.

[0011] Preferably, in step S3, N is 1~5℃.

[0012] Preferably, in step S3, N is 3°C.

[0013] Preferably, the anti-condensation control method further includes: S5: After executing the single-room branch electric water valve shut-off protection action, continuously monitor the air temperature and relative humidity of the room. When the room meets the preset electric water valve opening conditions, reopen the water valve, restore normal radiant chilled water supply, and synchronously update the control area Z. j The operating room log is updated, and the room is added back to the list of operating rooms for subsequent control cycles. The control program returns to step S2. The preset condition for opening the electric water valve is that the relative humidity (RH) of the room is less than 70% for 1 to 5 consecutive control cycles.

[0014] Preferably, the anti-condensation control method further includes: S6: Based on regional operation data, outdoor meteorological data and condensation risk event records from the past 3-7 days, the dew point difference judgment threshold N is automatically iteratively optimized through a self-learning engine.

[0015] The second objective of this invention is achieved by the following technical solution: A condensation prevention control system based on a five-constant radiant air conditioning system includes: The zone zoning module is used to divide all radiant terminal rooms sharing the same water supply network into the same control zone Z, based on the water pipe network layout of the five constant radiant air conditioning system. j Each control region Z j It contains at least one radiation terminal room; The dew point acquisition and calculation module is used for the control area Z. j In each radiant terminal room, the air temperature T in that room is collected in real time. i and relative humidity (RH) i The current dew point temperature DP of each room is calculated using the dew point calculation formula. i ; The risk assessment module is used when the control area Z... j If there is only one operating room and the relative humidity (RH) of that room is ≥75%, then the room is considered to have a high relative humidity (RH). single There is a risk of condensation. When the control region Z j If there are two or more rooms currently in operation, traverse the control area Z. j Filter out the rooms with the highest dew point temperature DP from all currently operating rooms. max Room R max Calculate and remove R max Post-control area Z j Average dew point DP of remaining operating rooms avg and the dew point difference ΔDP; if simultaneously ΔDP≥N and room R max Relative humidity (RH) max If ≥70%, then the room R is judged to be... max There is a significant risk of localized condensation. The execution module is used to determine the risk of condensation in room R. single If so, the electric water valve at the radiant end of the room will be shut off, stopping the cold water supply; For room R, which is deemed to have a risk of condensation. max Perform the shutdown of the electric water valve at the radiant end of the room, stop the cold water supply, and turn off the room's R... max Remove from the list of rooms currently in operation within the current control cycle, return to step S3, and control region Z. jThe remaining operating rooms in the area are re-evaluated for condensation risk, and this process is repeated until all operating rooms in the area no longer meet the condensation risk triggering conditions.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The control method of the present invention takes into account both the safety of extreme operating conditions in a single room and the stability of coordinated operation in multiple rooms. It avoids the hydraulic imbalance caused by the simultaneous closure of valves in multiple rooms from the root, solves the defects of traditional single-room independent control, and sets graded thresholds to fit the actual operating characteristics of the five constant systems. It retains a flexible and adjustable safety margin and balances the anti-condensation reliability and system cooling efficiency of the system.

[0017] 2. In the control method of this invention, when a single room is operating without other rooms to coordinate with, RH≥75% is directly used as the trigger condition. The logic is simple and the response is fast, which can quickly block the risk of condensation under high humidity conditions and prevent the radiant surface temperature from falling below the dew point. When multiple rooms are coordinated for verification, the dew point difference ΔDP≥N+RH is used. max With a dual judgment condition of ≥70%, it can accurately identify abnormally high humidity disturbances in local rooms (such as the introduction of humid air by opening windows), and will not misjudge condensation due to small errors in the sensors of a single room. This significantly reduces the probability of unnecessary frequent start-ups and shutdowns of the system, ensuring the stability of the hydraulic conditions of the entire area. If only the humidity is high but the dew point deviation is not large (such as high humidity in the entire area), it indicates that the overall environment is humid, and closing the valve will actually worsen the comfort. If only the dew point deviation is large but the humidity is not high, the risk of condensation is low. The valve will only be closed when both conditions are met, which is intelligent and stable. Attached Figure Description

[0018] Figure 1 This is the control logic diagram of the anti-condensation control method based on a five-constant radiant air conditioning system of the present invention. Detailed Implementation

[0019] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In the description of this invention, it should be understood that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be intermediate elements present. Conversely, when an element is referred to as being "directly" connected to another element, there are no intermediate elements.

[0022] Please see Figure 1 This invention provides a preferred embodiment of an anti-condensation control method based on a five-constant radiant air conditioning system. By conducting regional collaborative dew point verification on a water circuit zoning basis, it significantly reduces the probability of water valve malfunction while ensuring anti-condensation safety, avoiding system hydraulic imbalance, and simultaneously improving system operational stability and indoor comfort. The five-constant radiant air conditioning system includes a chiller / heat pump unit, a fresh air system, radiant terminals, and an intelligent control module. The chiller / heat pump unit is an air-source heat pump / ground-source heat pump, providing a stable source of hot and cold water to support year-round temperature regulation. The fresh air system, equipped with a total heat exchanger and filtration module, is responsible for whole-house ventilation and humidity control, while preventing condensation on radiant surfaces. The radiant terminals are capillary tubes and / or radiant panels on the ceiling, walls, or floor, completing heat transfer through low-temperature radiation to achieve a breeze-free experience, unlike traditional air conditioning. The intelligent control module automatically monitors and adjusts indoor temperature, humidity, CO2 concentration, and other parameters through built-in high-precision sensors and control methods.

[0023] Specifically, the anti-condensation control method includes the following steps: S1: Partition Preset Based on the water pipe network layout of the five-constant radiant air conditioning system, all radiant terminal rooms sharing the same water supply network are divided into the same control area Z. j (j=1~m, where m is a positive integer, such as 2, 3, 4, 5, 6, 7, 8, 9, 10, etc.), each control region Z j It contains at least one radiation terminal room, such as 1 radiation terminal room, 2 radiation terminal rooms, 3 radiation terminal rooms, 4 radiation terminal rooms, 5 radiation terminal rooms, 6 radiation terminal rooms, 7 radiation terminal rooms, 8 radiation terminal rooms, 9 radiation terminal rooms, 10 radiation terminal rooms, etc. In this step, "all radiant terminal rooms sharing the same water supply network" can be understood as multiple independent rooms with radiant terminals (capillary networks / radiant panels) all connected to the same public water supply and return main network, sharing the same cold / hot water medium supplied by the cold and heat sources. The opening and closing of a branch valve in any room will directly affect the water flow and pressure balance of the entire network. This setup divides the terminals sharing the same water supply network into the same control area, enabling coordinated control of water flow within the area. This avoids significant fluctuations in the overall network flow caused by independent valve closures in multiple rooms, ensuring system stability. Furthermore, it allows for comprehensive assessment of condensation risk based on overall temperature and humidity data, replacing isolated assessments of single rooms. This prevents missed assessments when multiple rooms simultaneously receive high-humidity air, strengthening overall condensation prevention capabilities. It also allows for matching specific temperature and humidity control strategies based on the functional attributes of different areas (e.g., active / quiet zones), catering to the usage needs of different spaces. In other embodiments, the division can also be based on the location of the radiant terminals, such as ceilings, walls, or floors, which will not be elaborated upon here.

[0024] S2: Real-time parameter acquisition For control region Z j In each radiant terminal room, the air temperature T in that room is collected in real time. i and relative humidity (RH) i The current dew point temperature DP of each room is calculated using the dew point calculation formula. i Where i = 1 to mm, mm is a positive integer, such as 2, 3, 4, 5, 6, 7, 8, 9, 10, etc. In this step, by independently collecting temperature and humidity data for each room, the differential humidity changes in different rooms can be captured (such as introducing high humidity air by opening a window in a single room). After obtaining the accurate dew point for each room, the temperature threshold of the corresponding radiant surface can be dynamically matched to ensure that the temperature of the radiant surface is always 1~5℃ higher than the dew point, taking into account both cooling efficiency and anti-condensation reliability.

[0025] In one embodiment, the current dew point temperature DP i The dew point calculation formula adopts the Magnus dew point approximation formula, and the specific calculation process is as follows: First, calculate the current air temperature T using Magnus's formula. i The saturated water vapor pressure E sw : E sw = 0.61078 × exp( (17.27 × T i ) / (T i + 237.3) ); Then by relative humidity (RH) i Calculate the actual water vapor pressure E in the current room. w: E w = E sw × (RH i / 100); Finally, the dew point temperature DP of the room was obtained. i : DP i = ( 237.3 × ln(E w / 0.61078) ) / ( 17.27 - ln(E w / 0.61078) ) In summary, dew point temperature DP i for: ; Among them, E sw = 0.61078 × exp( (17.27 × T i ) / (T i + 237.3), current air temperature T i The saturated vapor pressure at T is expressed in kPa. i The current room air temperature is expressed in °C (RH). i The current room relative humidity is expressed as a percentage, and the dew point temperature is expressed as DP. i The unit is ℃.

[0026] S3: Regional Risk Collaborative Assessment When the control region Z j If there is only one operating room and the relative humidity (RH) of that room is ≥75%, then the room is considered to have a high relative humidity (RH). single There is a risk of condensation, specifically when the relative humidity (RH) of the room is ≥75%; When the control region Z j If there are two or more rooms currently in operation, traverse the control area Z. j Filter all currently operating rooms to get the current dew point temperature DP. i Highest dew point temperature DP max Room R max Calculate and remove R max Post-control area Z j Average dew point DP of remaining operating rooms avg and the difference between the dew point and the dew point ΔDP; where, ; ΔDP=DP max -DP avg ; DP avg To remove R max Post-control area Z jThe average dew point temperature of the remaining operating rooms in the area, in °C; n is the total number of all remaining radiant terminal rooms in normal operation within the area, where n is a positive integer, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, etc.; DP i Remove R from this area max The real-time dew point temperature of the i-th normally operating room, in °C; DP max The highest dew point temperature, in °C, is the highest dew point temperature of all radiant terminal rooms in normal operation within this area. If ΔDP≥N and room R are simultaneously satisfied max Relative humidity (RH) max If ≥70%, then the room R is judged to be... max There is a significant risk of condensation in some areas. The condensation risk is triggered by the combination of the room's dew point difference and relative humidity. N is 1~5℃, such as 1℃, 2℃, 3℃, 4℃, 5℃, etc., which is the threshold for determining the dew point difference. The optimal value is 3℃. In this embodiment, the dew point difference ΔDP is generally understood as the difference between the real-time dew point temperature of a single room and the average dew point temperature of the area, used to quantify the degree of abnormality of a single room's dew point deviating from the overall average level of the area. However, in this invention, this dew point difference is the difference between the highest dew point temperature of all operating rooms and the temperature of the room excluding R. max Post-control area Z j The difference in average dew point temperature among the remaining operating rooms is used to precisely pinpoint the degree of abnormal high humidity deviation in a single room. This is not diluted by dew point fluctuations in ordinary rooms, allowing for rapid identification of sudden risks such as localized window opening and localized moisture generation. It significantly reduces the probability of multiple rooms simultaneously shutting off valves, fundamentally preventing hydraulic imbalance problems in the shared water supply network. In other embodiments, this dew point difference can also be calculated using conventional methods, which will not be elaborated upon here.

[0027] In this step, through traversal logic, following a preset search route, a status inspection is performed on all sensors and actuators in all rooms within the control area, collecting data such as temperature, humidity, and valve opening degree one by one. The control area Z is then determined. j The method for all rooms that are in operation is as follows: (1) Actuator status feedback: by reading the on / off / opening feedback signal of the actuator of the corresponding water distributor branch of the room, if the signal is in the open position, it is in operation; (2) Water flow monitoring: by the flow sensor of the supply and return water pipe at the radiant end of the room, the water flow circulation status is detected. If there is water circulation, it can be determined that the end is in operation.

[0028] This invention's control method balances the safety of single-room extreme operating conditions with the stability of multi-room coordinated operation. It fundamentally avoids the hydraulic imbalance problem caused by simultaneous valve closure in multiple rooms, solves the shortcomings of traditional single-room independent control, and uses tiered threshold settings to align with the actual operating characteristics of a five-constant system, retaining a flexible and adjustable safety margin to balance the system's anti-condensation reliability and cooling efficiency. Specifically, when a single room is operating without other rooms to coordinate with, RH ≥ 75% is used directly as the trigger condition. The logic is simple and the response is fast, quickly blocking the risk of condensation under high humidity conditions and preventing the radiant surface temperature from falling below the dew point. For multi-room coordinated verification, the dew point difference ΔDP ≥ N + RH is used. max With a dual judgment condition of ≥70%, it can accurately identify abnormally high humidity disturbances in local rooms (such as the introduction of humid air by opening windows), and will not misjudge condensation due to small errors in the sensors of a single room. This significantly reduces the probability of unnecessary frequent start-ups and shutdowns of the system, ensuring the stability of the hydraulic conditions of the entire area. If only the humidity is high but the dew point deviation is not large (such as high humidity in the entire area), it indicates that the overall environment is humid, and closing the valve will actually worsen the comfort. If only the dew point deviation is large but the humidity is not high, the risk of condensation is low. The valve will only be closed when both conditions are met, which is intelligent and stable.

[0029] S4: Closed-loop iterative control For room R, which is deemed to have a risk of condensation. single If so, the electric water valve at the radiant end of the room will be shut off, stopping the cold water supply; For room R, which is deemed to have a risk of condensation. max Perform the shutdown of the electric water valve at the radiant end of the room, stop the cold water supply, and turn off the room's R... max Remove from the list of rooms currently in operation within the current control cycle, return to step S3, and control region Z. j The remaining operating rooms in the area are re-evaluated for condensation risk, and the process is iterated until all operating rooms in the area no longer meet the condensation risk triggering conditions, thus completing the anti-condensation control process.

[0030] S5: Automatic recovery monitoring after valve closure After executing the single-room branch electric water valve shut-off protection action, the air temperature and relative humidity of the room are continuously monitored. When the room meets the preset electric water valve opening conditions, the water valve is reopened to restore normal radiant chilled water supply, and the control area Z is updated synchronously. j The operating room log is checked, and the room is added back to the list of operating rooms for the subsequent control cycle. The control program returns to step S2 and starts a new round of full-area dew point inspection control program. In this embodiment, the preset opening condition for the electric water valve is: the relative humidity (RH) of the room is less than 70% for M consecutive control cycles; where M = 1 to 5, and is a positive integer, such as 1, 2, 3, 4, 5, etc. This condition setting allows for quick judgment of the recovery after the valve is closed, avoiding the impact of prolonged valve closure on the room's cooling experience.

[0031] S6: Full Lifecycle Self-Learning Dynamic Threshold Iterative Optimization Based on regional operational data, outdoor meteorological data, and records of condensation risk events from the past 3-7 days, the dew point difference judgment threshold N is automatically iteratively optimized through a self-learning engine.

[0032] The steps for automatically iteratively optimizing the dew point difference determination threshold N are as follows: When the outdoor relative humidity is ≥80% for 24 consecutive hours during the plum rain season, the N temperature will be automatically lowered to 2℃ (equivalent to N-1) to prevent condensation in advance. When the outdoor relative humidity is ≤40% for 24 consecutive hours, the temperature N will be automatically increased to 4℃ (equivalent to N+1) to maximize the cooling comfort. If a room has three consecutive records of accidentally closing a valve, a unique threshold parameter will be automatically generated for that room to achieve personalized adaptation for a single room.

[0033] In this embodiment, the system incorporates a 24 / 7 self-learning engine that automatically adjusts the value of N based on different meteorological conditions over the past 3-7 days, such as high humidity during the plum rain season or dry conditions. During high humidity, N is lowered to proactively prevent condensation, while during dry conditions, N is raised to maximize cooling comfort, balancing safety and user experience. Based on historical condensation events and records of accidental valve closures, it iterates threshold values ​​to perform customized calibrations for the moisture dissipation characteristics of different buildings and rooms, avoiding misjudgments or omissions in specific scenarios due to the use of general thresholds. The customized threshold parameters involve various settings and will not be detailed here.

[0034] S7: Pre-verification steps Before closing the electric water valve, a 15-second pre-verification step is set. Specifically, the room's corresponding fresh air dehumidification module or auxiliary fan coil unit is first activated for pre-dehumidification. After 15 seconds, the dew point parameter of the room is re-collected. If the dew point still has not fallen back to the safe range, the valve is then closed. The safe range is defined as a relative humidity (RH) of less than 70% in the room.

[0035] The above settings are designed to address occasional, momentary high humidity disturbances such as short-term window opening or brief human activity. First, fresh air dehumidification is activated for rapid humidity reduction. After 15 seconds, the dew point is checked again to avoid directly shutting off the valve due to sudden humidity changes, thus reducing unnecessary cooling interruptions. By replacing direct valve shut-off with pre-dehumidification, the frequency of valve shut-off in a single room is significantly reduced, avoiding hydraulic imbalance in the shared water supply network caused by centralized valve shut-off in multiple rooms, and ensuring the stable operation of the entire area's radiant system.

[0036] In other embodiments, the present invention also provides an anti-condensation control system based on a five-constant radiant air conditioning system, comprising: The zone zoning module is used to divide all radiant terminal rooms sharing the same water supply network into the same control zone Z, based on the water pipe network layout of the five constant radiant air conditioning system. j Each control region Z j It contains at least one radiation terminal room; The dew point acquisition and calculation module is used for the control area Z. j In each radiant terminal room, the air temperature T in that room is collected in real time. i and relative humidity (RH) i The current dew point temperature DP of each room is calculated using the dew point calculation formula. i ; The risk assessment module is used when the control area Z... j If there is only one operating room and the relative humidity (RH) of that room is ≥75%, then the room is considered to have a high relative humidity (RH). single There is a risk of condensation. When the control region Z j If there are two or more rooms currently in operation, traverse the control area Z. j Filter out the rooms with the highest dew point temperature DP from all currently operating rooms. max Room R max Calculate and remove R max Post-control area Z j Average dew point DP of remaining operating rooms avg and the dew point difference ΔDP; if simultaneously ΔDP≥N and room R max Relative humidity (RH) max If ≥70%, then the room R is judged to be... max There is a significant risk of localized condensation. The execution module is used to determine the risk of condensation in room R. single If so, the electric water valve at the radiant end of the room will be shut off, stopping the cold water supply; For room R, which is deemed to have a risk of condensation. max Perform the shutdown of the electric water valve at the radiant end of the room, stop the cold water supply, and turn off the room's R... max Remove from the list of rooms currently in operation within the current control cycle, return to step S3, and control region Z. j The remaining operating rooms in the area are re-evaluated for condensation risk, and the process is iterated until all operating rooms in the area no longer meet the condensation risk triggering conditions. The automatic recovery monitoring module continuously monitors the air temperature and relative humidity of a room after the single-room branch electric water valve shut-off protection action is executed. When the room meets the preset electric water valve opening conditions, the valve is reopened to restore normal radiant chilled water supply, and the control area Z is updated synchronously. j The room is added to the list of operating rooms in the subsequent control cycle, and a new round of full-area dew point inspection and control procedures is initiated. The iterative optimization module is used to automatically iteratively optimize the dew point difference judgment threshold N based on regional operation data, outdoor meteorological data and dew risk event records from the past 3-7 days through a self-learning engine. The pre-verification module is used to set a 15-second pre-verification step before performing the action of closing the electric water valve.

[0037] Some specific steps in the above modules correspond to the control content of the anti-condensation control method, which will not be elaborated here.

[0038] The present invention also proposes an anti-condensation control computer device, comprising: a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of the anti-condensation control method.

[0039] The present invention also proposes a readable storage medium storing a computer program, the computer program including program instructions, which, when executed by a processor, are used to perform the steps of the anti-condensation control method.

[0040] To better demonstrate the control logic of this invention, the following specific examples are provided for further explanation.

[0041] A certain 120m 2 The five constant radiant air conditioning system of a residential building uses the same set of water supply main pipes throughout the house. All radiant terminal rooms are designated as the same control area Zj, which includes four radiant terminal rooms: living room, master bedroom, secondary bedroom, and study. The dew point difference judgment threshold N is preset to 3℃.

[0042] During system operation, the real-time collected parameters for the four rooms at a certain moment were as follows: living room temperature 26.2℃, relative humidity 68%, dew point calculated to be 19.3℃; master bedroom temperature 26.5℃, relative humidity 82%, dew point calculated to be 22.8℃; second bedroom temperature 26.1℃, relative humidity 67%, dew point calculated to be 19.1℃; study temperature 26.3℃, relative humidity 69%, dew point calculated to be 19.5℃.

[0043] The system selected the room with the highest dew point as the master bedroom (R). max The average dew point DP of the three remaining rooms after excluding the master bedroom. avgThe temperature is 19.3℃. The calculated dew point difference ΔDP = 22.8 - 19.3 = 3.5℃, which meets the risk triggering conditions of ΔDP ≥ 3℃ and relative humidity of 82% ≥ 70% in the master bedroom. Therefore, it is determined that there is a significant risk of local condensation in the master bedroom.

[0044] The system first starts the fresh air dehumidification module in the master bedroom and runs it for 15 seconds (this part can be omitted and added as needed). After re-collecting the parameters, the dew point in the master bedroom is still 22.5℃ and has not dropped. Then the electric water valve in the master bedroom is turned off, and the master bedroom is removed from the list of currently running rooms. The remaining three rooms, namely the living room, the secondary bedroom, and the study, enter the next round of judgment.

[0045] Iterate through the dew points of the remaining 3 rooms. The highest dew point is 19.5℃ in the study. After removing the study, the average dew point DP of the remaining 2 rooms is calculated. avg The temperature was 19.2℃, and the dew point difference ΔDP = 0.3℃, which is far below the 3℃ threshold. Therefore, none of the rooms met the conditions for condensation risk, and this round of control procedures ended.

[0046] In this embodiment, the valve is shut off only in the master bedroom where humidity is abnormally high, while the other three rooms maintain normal cooling throughout the process. The system water flow does not fluctuate significantly, which not only completely avoids the risk of condensation in the master bedroom, but also ensures the cooling comfort of the rest of the house to the greatest extent, thus fully achieving the expected technical effect of the present invention.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A method for preventing condensation control based on a five-constant radiant air conditioning system, characterized in that, Includes the following steps: S1: Based on the water pipe network layout of the five-constant radiant air conditioning system, all radiant terminal rooms sharing the same water supply network are divided into the same control area Z. j Each control region Z j It contains at least one radiation terminal room; S2: For control region Z j In each radiant terminal room, the air temperature T in that room is collected in real time. i and relative humidity (RH) i The current dew point temperature DP of each room is calculated using the dew point calculation formula. i ; S3: When the control area Z j If there is only one operating room and the relative humidity (RH) of that room is ≥75%, then the room is considered to have a high relative humidity (RH). single There is a risk of condensation. When the control region Z j If there are two or more rooms currently in operation, traverse the control area Z. j Filter out the rooms with the highest dew point temperature DP from all currently operating rooms. max Room R max Calculate and remove R max Post-control area Z j Average dew point DP of remaining operating rooms avg and the dew point difference ΔDP; if simultaneously ΔDP≥N and room R max Relative humidity (RH) max If ≥70%, then the room R is judged to be... max There is a significant risk of localized condensation. S4: For rooms R that are deemed to have a risk of condensation single If so, the electric water valve at the radiant end of the room will be shut off, stopping the cold water supply; For room R, which is deemed to have a risk of condensation. max Perform the shutdown of the electric water valve at the radiant end of the room, stop the cold water supply, and turn off the room's R... max Remove from the list of rooms currently in operation within the current control cycle, return to step S3, and control region Z. j The remaining operating rooms in the area are re-evaluated for condensation risk, and this process is repeated until all operating rooms in the area no longer meet the condensation risk triggering conditions.

2. The anti-condensation control method based on a five-constant radiant air conditioning system according to claim 1, characterized in that, In step S1, j = 1 ~ m, where m is a positive integer.

3. The anti-condensation control method based on a five-constant radiant air conditioning system according to claim 1, characterized in that, In step S2, i = 1 ~ mm, where mm is a positive integer.

4. The anti-condensation control method based on a five-constant radiant air conditioning system according to claim 1, characterized in that, In step S2, the current dew point temperature DP i The formula for calculating the dew point is: ； Among them, E sw = 0.61078 × exp( (17.27 × T i ) / (T i + 237.3), current air temperature T i The saturated vapor pressure at T is expressed in kPa. i The current room air temperature is expressed in °C (RH). i The current room relative humidity is expressed as a percentage (%).

5. The anti-condensation control method based on a five-constant radiant air conditioning system according to claim 1, characterized in that, In step S3, ΔDP = DP max -DP avg ; , where DP avg To remove R max Post-control area Z j The average dew point temperature of the remaining operating rooms in the area, in °C; n is the total number of all remaining radiant terminal rooms in normal operation within the area, where n is a positive integer; DP i Remove R from this area max The real-time dew point temperature of the i-th normally operating room, in °C; DP max The highest dew point temperature, in °C, is the highest dew point temperature of all radiant terminal rooms in the region that are in normal operating condition.

6. The anti-condensation control method based on a five-constant radiant air conditioning system according to claim 1, characterized in that, In step S3, N is 1~5℃.

7. The anti-condensation control method based on a five-constant radiant air conditioning system according to claim 6, characterized in that, In step S3, N is 3℃.

8. The anti-condensation control method based on a five-constant radiant air conditioning system according to claim 1, characterized in that, The anti-condensation control method further includes: S5: After executing the single-room branch electric water valve shut-off protection action, continuously monitor the air temperature and relative humidity of the room. When the room meets the preset electric water valve opening conditions, reopen the water valve, restore normal radiant chilled water supply, and synchronously update the control area Z. j The operating room log is updated, and the room is added back to the list of operating rooms for subsequent control cycles. The control program returns to step S2. The preset condition for opening the electric water valve is that the relative humidity (RH) of the room is less than 70% for 1 to 5 consecutive control cycles.

9. The anti-condensation control method based on a five-constant radiant air conditioning system according to claim 1, characterized in that, The anti-condensation control method further includes: S6: Based on regional operation data, outdoor meteorological data and condensation risk event records from the past 3-7 days, the dew point difference judgment threshold N is automatically iteratively optimized through a self-learning engine.

10. A condensation prevention control system based on a five-constant radiant air conditioning system, characterized in that, include: The zone zoning module is used to divide all radiant terminal rooms sharing the same water supply network into the same control zone Z, based on the water pipe network layout of the five constant radiant air conditioning system. j Each control region Z j It contains at least one radiation terminal room; The dew point acquisition and calculation module is used for the control area Z. j In each radiant terminal room, the air temperature T in that room is collected in real time. i and relative humidity (RH) i The current dew point temperature DP of each room is calculated using the dew point calculation formula. i ; The risk assessment module is used when the control area Z... j If there is only one operating room and the relative humidity (RH) of that room is ≥75%, then the room is considered to have a high relative humidity (RH). single There is a risk of condensation. When the control region Z j If there are two or more rooms currently in operation, traverse the control area Z. j Filter out the rooms with the highest dew point temperature DP from all currently operating rooms. max Room R max Calculate and remove R max Post-control area Z j Average dew point DP of remaining operating rooms avg and the dew point difference ΔDP; if simultaneously ΔDP≥N and room R max Relative humidity (RH) max If ≥70%, then the room R is judged to be... max There is a significant risk of localized condensation. The execution module is used to determine the risk of condensation in room R. single If so, the electric water valve at the radiant end of the room will be shut off, stopping the cold water supply; For room R, which is deemed to have a risk of condensation. max Perform the shutdown of the electric water valve at the radiant end of the room, stop the cold water supply, and turn off the room's R... max Remove from the list of rooms currently in operation within the current control cycle, return to step S3, and control region Z. j The remaining operating rooms in the area are re-evaluated for condensation risk, and this process is repeated until all operating rooms in the area no longer meet the condensation risk triggering conditions.

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