A method and apparatus for regulating a cross-seasonal thermal storage system

Abstract

This application provides a method and apparatus for regulating a cross-seasonal thermal storage system. The method, after determining the current season type, acquires the current ambient temperature within the current time period. If the current ambient temperature meets the thermal regulation conditions corresponding to the current season type, it enters the target thermal regulation stage. During this stage, the temperatures of different layers within the stratified hot water storage tank and the corresponding regulation reference temperatures are collected. When the target thermal regulation stage is the heat storage stage, differentiated heat storage regulation of the stratified hot water storage tank is performed through the heat source system based on the regulation reference temperatures. When the target thermal regulation stage is the heat release stage, heat release parameters are regulated in the middle transition zone of the stratified hot water storage tank based on the regulation reference temperatures. This method reduces the mixing of hot and cold water through the stratified tank structure and zoned temperature control, thereby reducing the long-term heat loss rate and improving thermal storage efficiency.

Description

Technical Field

[0001] This application relates to the field of energy storage and intelligent control technology, and more specifically, to a method and apparatus for regulating a cross-seasonal thermal storage system. Background Technology

[0002] Cross-seasonal thermal storage technology, as a key means to solve the seasonal mismatch between energy supply and demand, can store low-grade heat such as solar energy and industrial waste heat in summer and release it in winter, thereby improving the balance of regional energy systems. Currently, water tank storage is the mainstream application of cross-seasonal thermal storage systems, but it has inherent drawbacks such as long storage periods (typically 6-8 months) and large heat losses. The drastic temperature fluctuations of heat sources in summer and the unstable load demand in winter result in the thermal storage efficiency of traditional systems generally being below 60%, making it difficult to meet the requirements of energy conservation and heating stability. Therefore, reducing heat loss and adapting to dynamic supply and demand has become the core direction for technological breakthroughs.

[0003] Traditional cross-seasonal thermal storage systems employ a constant-temperature heat storage + constant-temperature heat release mode:

[0004] Heat storage stage (summer): Set the heat storage temperature threshold of the hot water storage tank (e.g., 60℃). When the outlet temperature of the heat source is higher than this threshold, start the circulation pump to inject heat into the water tank. Stop heat storage when the average temperature of the water tank reaches 65℃ to avoid high temperature from aggravating heat loss.

[0005] Heat release phase (winter: set a threshold for the heating outlet water temperature (e.g., 45℃), start the heat release circulation pump when the average temperature of the water tank is higher than the threshold; switch to the auxiliary heat source when the temperature is lower than 40℃).

[0006] However, traditional cross-seasonal thermal storage systems rely on the average temperature of the water tank for control, resulting in high heat loss rate and low heat source utilization rate. They cannot adapt to dynamic supply and demand, thus causing low thermal storage efficiency and unstable heating. Summary of the Invention

[0007] The purpose of this application is to provide a method and apparatus for regulating a cross-seasonal thermal storage system, which reduces the mixing of hot and cold water through a layered water tank structure and zoned temperature control, thereby reducing the long-term thermal storage heat loss rate and improving thermal storage efficiency.

[0008] Firstly, a control method for a cross-seasonal thermal storage system is provided, applied in an intelligent controller within the system. The cross-seasonal thermal storage system further includes a layered hot water storage tank, a heat source system, and a load system. The layered hot water storage tank comprises an upper high-temperature zone, a middle transition zone, and a lower low-temperature zone. The method may include:

[0009] After determining the current season type, obtain the current ambient temperature within the current time period; the current season type includes summer and winter;

[0010] If the current ambient temperature is detected to meet the thermal control conditions corresponding to the current season type, the target thermal control stage is entered. During the target thermal control stage, the temperature of different layers in the stratified hot water storage tank and the control reference temperature corresponding to the thermal control conditions are collected. The target thermal control stage includes a heat storage stage and a heat release stage.

[0011] When the target thermal regulation stage is the heat storage stage, the heat source system performs differentiated heat storage regulation on the stratified hot water storage tank according to the regulation reference temperature.

[0012] When the target thermal regulation stage is the heat release stage, the heat release parameters of the middle transition zone of the layered hot water storage tank are regulated according to the regulation reference temperature.

[0013] In one possible implementation, the interseasonal thermal storage system further includes a heat source circulation pump connected to a heat source system, the other end of which is connected to the upper inlet and the middle inlet of the stratified hot water storage tank, respectively.

[0014] If the current season type is summer, then the target heat regulation stage is the heat storage stage, and the regulation reference temperature corresponding to the corresponding heat regulation conditions is the heat source temperature of the heat source system.

[0015] Based on the aforementioned control reference temperature, the heat source system performs differentiated heat storage control on the stratified hot water storage tank, including:

[0016] When the heat source temperature is not less than the first temperature threshold, the first valve of the heat source circulation pump is opened to inject the high-temperature hot water in the heat source system into the upper high-temperature zone of the layered hot water storage tank. When the temperature of the upper high-temperature zone reaches the first target temperature, the first valve of the heat source circulation pump is closed to stop heat storage.

[0017] When the heat source temperature is between the second temperature threshold and the first temperature threshold, the second valve of the heat source circulation pump is opened to inject medium-temperature hot water from the heat source system into the middle transition zone of the stratified hot water storage tank. When the temperature of the middle transition zone reaches the second target temperature, the second valve of the heat source circulation pump is closed to stop heat storage.

[0018] In one possible implementation, the interseasonal thermal storage system further includes a load circulation pump connected to a load system, the other end of which is connected to the middle inlet of the stratified hot water storage tank.

[0019] If the current season type is winter, then the target thermal control stage is the heat release stage, and the corresponding control reference temperature is the indoor temperature of the load system.

[0020] Based on the aforementioned control reference temperature, the heat release parameters of the middle transition zone of the stratified hot water storage tank are adjusted, including:

[0021] If the indoor temperature is less than the third temperature threshold, the flow rate of the load circulation pump is adjusted to M times the rated flow rate, and the temperature of the middle transition zone of the stratified hot water storage tank is controlled to increase the preset temperature; M is a positive number greater than 1.

[0022] If the indoor temperature is between the third and fourth temperature thresholds, the rated flow rate of the load circulation pump and the temperature of the middle transition zone are kept constant.

[0023] If the indoor temperature is greater than the fourth temperature threshold, the flow rate of the load circulation pump is adjusted to N times the rated flow rate; N is a positive number less than 1, and the temperature of the middle transition zone of the stratified hot water storage tank is controlled to decrease to a preset temperature.

[0024] In one possible implementation, the interseasonal thermal storage system further includes heat loss compensation devices, respectively installed in the upper high-temperature zone, the middle transition zone, and the lower low-temperature zone of the layered hot water storage tank; the method further includes:

[0025] When the heat storage cycle is halfway through or the temperature in the lower low-temperature zone is below the corresponding threshold, the heat loss compensation device is activated to heat the water in the corresponding layer to maintain temperature stability.

[0026] In one possible implementation, when the thermal storage cycle is halfway through or the temperature of the lower layer falls below a corresponding threshold, a heat loss compensation device is activated to heat the water in the corresponding layer, including:

[0027] During the heat storage phase, if the heat storage cycle is more than halfway through, the heat loss compensation device in the upper layer is activated to maintain the upper layer temperature at the third target temperature before shutting down the heat loss compensation device.

[0028] In one possible implementation, when the thermal storage cycle is halfway through or the temperature of the lower layer falls below a corresponding threshold, a heat loss compensation device is activated to heat the water in the corresponding layer, including:

[0029] During the heat release phase, if the temperature of the lower low-temperature zone of the stratified hot water storage tank is less than the fifth temperature threshold, the heat loss compensation device for the lower low-temperature zone is activated to maintain the temperature of the lower low-temperature zone at the fourth target temperature before the heat loss compensation device is turned off.

[0030] In one possible implementation, the method further includes:

[0031] When the flow rate in the target pipe is detected to be 0, the heat source circulation pump is shut down and an alarm is triggered; the target pipe is the heat source pipe between the heat source system and the heat source circulation pump or the load pipe between the middle outlet of the partitioned hot water storage tank and the load circulation pump.

[0032] When the temperature of the upper high-temperature zone exceeds the sixth temperature threshold of 70°C during the heat storage stage, disconnect the connection with the heat source, shut off the corresponding heat loss compensation device, and open the exhaust valve of the upper high-temperature zone to dissipate heat.

[0033] When the flow rate through the load circulation pump is less than 50% of the rated flow rate during the heat release phase, reduce the load pump speed and trigger an alarm.

[0034] Secondly, a control device for a cross-seasonal thermal storage system is provided, which is applied in an intelligent controller of the cross-seasonal thermal storage system. The cross-seasonal thermal storage system further includes a layered hot water storage tank, a heat source system, and a load system. The layered hot water storage tank includes an upper high-temperature zone, a middle transition zone, and a lower low-temperature zone. The device may include:

[0035] The acquisition unit is used to acquire the current ambient temperature within the current time period after determining the current season type; the current season type includes summer and winter.

[0036] The data acquisition unit is used to enter the target thermal control stage if the current ambient temperature is detected to meet the thermal control conditions corresponding to the current season type. During the target thermal control stage, the unit acquires the temperature of different layers in the stratified hot water storage tank and the control reference temperature corresponding to the thermal control conditions. The target thermal control stage includes a heat storage stage and a heat release stage.

[0037] The control unit is used to control the differential heat storage of the stratified hot water storage tank through the heat source system according to the control reference temperature when the target heat control stage is the heat storage stage; and to control the heat release parameters of the middle transition zone of the stratified hot water storage tank according to the control reference temperature when the target heat control stage is the heat release stage.

[0038] Thirdly, an electronic device is provided, which includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0039] Memory, used to store computer programs;

[0040] When a processor executes a program stored in memory, it implements any of the steps described in the first aspect above.

[0041] Fourthly, a computer-readable storage medium is provided, wherein a computer program is stored therein, and when executed by a processor, the computer program implements the steps of any of the methods described in the first aspect above.

[0042] The method and apparatus for regulating a cross-seasonal thermal storage system provided in this application, after determining the current season type, acquires the current ambient temperature within the current time period. If the current ambient temperature meets the thermal regulation conditions corresponding to the current season type, the system enters the target thermal regulation stage. During the target thermal regulation stage, the temperatures of different layers within the stratified hot water storage tank and the corresponding regulation reference temperatures are collected. The target thermal regulation stage includes a heat storage stage and a heat release stage. When the target thermal regulation stage is the heat storage stage, the heat storage of the stratified hot water storage tank is regulated differently through the heat source system based on the regulation reference temperature. When the target thermal regulation stage is the heat release stage, the heat release parameters of the middle transition zone of the stratified hot water storage tank are regulated based on the regulation reference temperature. This method reduces the mixing of hot and cold water through the stratified tank structure and zoned temperature control, thereby reducing the long-term heat loss rate and improving the thermal storage efficiency. Attached Figure Description

[0043] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 A schematic diagram of a cross-seasonal thermal storage system provided in this application embodiment;

[0045] Figure 2 A flowchart illustrating a method for regulating a cross-seasonal thermal storage system provided in this application embodiment;

[0046] Figure 3 A schematic diagram of the structure of a control device for a cross-seasonal thermal storage system provided in this application embodiment;

[0047] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise defined, the technical or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art. The words "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are only used to distinguish different components. The words "comprising" or "including," etc., mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, but do not exclude other elements or objects. The words "connected," "coupled," or "connected," etc., are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up," "down," "left," "right," etc., are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0049] Traditional cross-seasonal thermal storage systems employ a constant-temperature heat storage + constant-temperature heat release mode:

[0050] Heat storage stage (summer): Set the heat storage temperature threshold of the hot water storage tank (e.g., 60℃). When the outlet temperature of the heat source is higher than this threshold, start the circulation pump to inject heat into the water tank. Stop heat storage when the average temperature of the water tank reaches 65℃ to avoid high temperature from aggravating heat loss.

[0051] Heat release phase (winter: set a threshold for the heating outlet water temperature (e.g., 45℃), start the heat release circulation pump when the average temperature of the water tank is higher than the threshold; switch to the auxiliary heat source when the temperature is lower than 40℃).

[0052] While the traditional constant-temperature heat storage + constant-temperature heat release mode is low in cost, it has significant technical limitations: it uses the average temperature of the water tank as the control basis, ignoring the stratification of water temperature, resulting in the mixing of hot and cold water, and a long-term heat loss rate of up to 30%-40%; it only utilizes high-temperature heat sources of ≥60℃, wasting medium-temperature heat sources of 45℃-55℃; it releases heat at a fixed temperature in winter, which cannot adapt to changes in indoor temperature, easily causing energy waste or heating interruption; and it lacks an active heat loss compensation mechanism, so the water tank temperature continues to drop during long-term heat storage, reducing the available heat in winter.

[0053] Specifically, in existing technologies, mixing hot and cold water exacerbates heat loss, wastes medium-temperature heat sources, and results in a rigid heat release process lacking an active compensation mechanism, leading to a significant decrease in system energy efficiency during long-term heat storage. This invention addresses this core problem through layered heat storage and heat loss compensation regulation.

[0054] This application provides a method for regulating a cross-seasonal thermal storage system, applicable to building heating and industrial heat use scenarios. This technical field encompasses thermodynamics, fluid control, sensor technology, and automation algorithms, aiming to improve the efficiency and adaptability of thermal storage systems through hierarchical structures and dynamic regulation.

[0055] The regulation method for cross-seasonal thermal storage systems provided in this application embodiment can be applied to... Figure 1 In the cross-seasonal thermal storage system architecture shown, such as Figure 1 As shown, the system may include:

[0056] The system comprises a zoned hot water storage tank (1), a temperature sensor (2), a heat source system (3), a load system (4), a flow sensor (5), a heat source circulation pump (6), a load circulation pump (7), an intelligent controller (8), and a heat loss compensation device (9). These components work together to achieve tiered heat storage and heat loss compensation.

[0057] The zoned hot water storage tank (1) is the core component of the system, with a total height of H. It is preferably divided into three layers: an upper high-temperature zone (height range 0.6H-1.0H), a middle transition zone (height range 0.3H-0.6H), and a lower low-temperature zone (height range 0-0.3H). Each layer is equipped with a temperature sensor (2) for real-time measurement of the upper layer temperature. Mid-layer temperature and lower layer temperature A heat loss compensation device (9) is used to heat the water in the corresponding layer. A baffle plate is provided between adjacent layers inside the water tank to reduce the mixing of hot and cold water and ensure stable temperature stratification.

[0058] The heat source system (3) includes a solar collector and an industrial waste heat exchanger. The heat source system (3) is connected to the upper inlet of the water tank through the first valve of the heat source circulation pump (6) and to the middle inlet of the water tank through the second valve of the heat source circulation pump (6). A heat source flow sensor (5) is installed on the heat source pipeline between the heat source system (3) and the heat source circulation pump (6) to monitor the heat source flow.

[0059] The load system (4), including the building heating terminal, is connected to the middle outlet of the zoned hot water storage tank (1) via a load circulation pump (7);

[0060] A load flow sensor (5) is installed on the load pipe between the middle outlet of the zoned hot water storage tank (1) and the load circulation pump (7), and a temperature sensor (2) is installed indoors to measure the room temperature. .

[0061] The intelligent controller (8) is connected to all sensors, the heat source circulation pump (6), the load circulation pump (7), and the heat loss compensation device (9) to execute the control algorithm;

[0062] The heat loss compensation device (9) is an electric heating module with a rated power of 5kW, which is installed at the bottom of each layer of the partitioned hot water storage tank (1) to supplement heat loss. Its heating operation is automatically triggered based on the temperature threshold.

[0063] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application. Furthermore, the embodiments and features in the embodiments of this application can be combined with each other without conflict.

[0064] Figure 2 This is a flowchart illustrating a method for regulating a cross-seasonal thermal storage system, as provided in an embodiment of this application. Figure 2 As shown, the method may include:

[0065] Step S210: After determining the current season type, obtain the current ambient temperature within the current time period.

[0066] The current season types include summer and winter.

[0067] The intelligent controller calibrates time and seasonal parameters using a built-in clock module or ambient temperature sensor to determine the current season type, such as summer or winter, and obtains the current ambient temperature for the current time period.

[0068] Step S220: When the current ambient temperature meets the thermal control conditions corresponding to the current season type, enter the target thermal control stage. In the target thermal control stage, collect the temperature of different layers and the control reference temperature corresponding to the corresponding thermal control conditions.

[0069] The target thermal regulation stage can include a heat storage stage and a heat release stage.

[0070] If the current season is summer, the heat storage stage will begin when the current ambient temperature remains at or above the first trigger temperature (e.g., 25°C). The temperature of different layers and the corresponding control reference temperature under the corresponding thermal control conditions will be collected. At this time, the control reference temperature under the corresponding thermal control conditions will be the heat source temperature of the heat source system.

[0071] If the current season type is winter, the heat release stage will begin when the current ambient temperature does not exceed the second trigger temperature (e.g., 15℃). The temperature of different layers and the control reference temperature corresponding to the corresponding thermal control conditions will be collected. At this time, the control reference temperature corresponding to the corresponding thermal control conditions will be the indoor temperature of the load system.

[0072] Step S230: Perform thermal control based on the collected temperatures of different layers and the corresponding control reference temperatures.

[0073] (1) During the heat storage stage, based on the control reference temperature, the heat source system is used to control the differentiated heat storage of the stratified hot water tanks. Specifically:

[0074] When the heat source temperature is not less than the first temperature threshold (e.g., 55°C), the first valve of the heat source circulation pump is opened to inject the high-temperature hot water in the heat source system into the upper high-temperature zone of the stratified hot water storage tank. When the temperature of the upper high-temperature zone reaches the first target temperature (e.g., 65°C), the first valve of the heat source circulation pump is closed to stop heat storage.

[0075] When the heat source temperature is between the second temperature threshold (e.g., 45°C) and the first temperature threshold, the second valve of the heat source circulation pump is opened to inject medium-temperature hot water from the heat source system into the middle transition zone of the stratified hot water storage tank. When the temperature of the middle transition zone reaches the second target temperature (e.g., 50°C), the second valve of the heat source circulation pump is closed to stop heat storage.

[0076] (2) During the heat release phase, the heat release parameters of the middle transition zone of the stratified hot water storage tank are adjusted according to the control reference temperature. Specifically:

[0077] If the indoor temperature is less than the third temperature threshold (e.g., 18℃), adjust the flow rate of the load circulation pump to M times the rated flow rate, and control the temperature of the middle transition zone of the stratified hot water storage tank to increase the preset temperature (e.g., 5℃); M is a positive number greater than 1.

[0078] If the indoor temperature is between the third and fourth temperature thresholds (e.g., 22°C), then keep the rated flow rate of the load circulation pump and the temperature of the middle transition zone constant.

[0079] If the indoor temperature is greater than the fourth temperature threshold, the flow rate of the load circulation pump is adjusted to N times the rated flow rate; N is a positive number less than 1, and the temperature of the middle transition zone of the stratified hot water storage tank is controlled to decrease to the preset temperature.

[0080] Furthermore, when the thermal storage cycle is more than halfway through or the temperature in the lower low-temperature zone falls below the corresponding threshold, the heat loss compensation device is activated to heat the water in the corresponding layer to maintain temperature stability. Specifically:

[0081] During the heat storage phase, if the heat storage cycle is more than halfway through, the heat loss compensation device in the upper layer is activated to maintain the upper layer temperature at the third target temperature before shutting down the heat loss compensation device.

[0082] During the heat release phase, if the temperature of the lower low-temperature zone of the stratified hot water storage tank is less than the fifth temperature threshold (e.g., 35°C), the heat loss compensation device for the lower low-temperature zone is activated to maintain the temperature of the lower low-temperature zone at the fourth target temperature before the heat loss compensation device is turned off.

[0083] In addition to compensation at each stage, the intelligent controller can periodically (e.g., weekly) check the temperature of each layer of the water tank. If an abnormal temperature gradient is detected (e.g., temperature difference between upper and lower layers < 5℃), the heat loss compensation device can be automatically activated to correct the heating and maintain the layered structure. The compensation control algorithm involved can adopt fuzzy-PID composite control, dynamically adjusting the heating power according to the temperature change rate to avoid frequent start-stop operations.

[0084] In some embodiments, the method may further include the following anomaly protection mechanisms:

[0085] Pipe blockage protection: When the flow rate in the target pipe is detected to be 0, the heat source circulation pump is shut down and an alarm is triggered (e.g., through a buzzer and LED light) to remind maintenance personnel to check; the target pipe is the heat source pipe between the heat source system and the heat source circulation pump or the load pipe between the middle outlet of the zoned hot water storage tank and the load circulation pump.

[0086] Over-temperature protection: When the temperature in the upper high-temperature zone exceeds the sixth temperature threshold (e.g., 70℃) during the heat storage stage, the connection to the heat source is disconnected, the corresponding heat loss compensation device is shut off, and the exhaust valve in the upper high-temperature zone is opened to dissipate heat and prevent the water from boiling. The threshold of 70℃ is set based on safety standards.

[0087] Flow anomaly protection: When the flow rate through the load circulation pump is lower than 50% of the rated flow rate during the heat release phase, the load pump speed is reduced to a safe value and an alarm is triggered. An anomaly log can also be recorded; if the anomaly persists, the system can automatically switch to the standby pump.

[0088] In one example, the intelligent controller determines the current season type, such as summer or winter, using a built-in clock module or an ambient temperature sensor, and collects the summer or winter ambient temperature. When the summer ambient temperature remains ≥25℃, it enters the heat storage phase; when the winter ambient temperature remains ≤15℃, it enters the heat release phase.

[0089] For the heat storage stage:

[0090] 1. The intelligent controller (8) triggers the "layer temperature acquisition" function, and the upper layer temperature is acquired in real time through the temperature sensor (2). Mid-layer temperature Lower layer temperature and heat source temperature All data is transmitted to the intelligent controller (8) via wired or wireless means, with a sampling frequency preferably once per minute to ensure real-time accuracy of parameters. At the same time, the heat source flow sensor (5) monitors the heat source flow as an auxiliary parameter for pump control.

[0091] 2. Intelligent controller (8) according to Determine the heat source level and implement differentiated heat storage:

[0092] like When the temperature exceeds 55℃ (high-temperature heat source), the controller starts the heat source circulation pump (6), and the high-temperature hot water is injected into the upper high-temperature zone of the water tank through the first branch (upper inlet). The guide plate guides the upper cold water to sink to the lower layer, preventing mixing. Continuous monitoring is performed. ,when When the temperature reaches 65°C (by threshold comparison), the intelligent controller (8) shuts down the heat source circulation pump (6) to complete the high-temperature heat storage. This process is preferably carried out during midday when there is sufficient solar energy to maximize the utilization of the heat source.

[0093] If 45℃≤ <55℃ (medium-temperature heat source), the controller adjusts the outlet valve of the heat source circulation pump (6) (e.g., using a proportional integral valve) to inject the medium-temperature hot water into the intermediate layer transition zone through the second branch (intermediate layer inlet). Monitoring ,when The pump is shut off when the temperature reaches 50°C. This implementation allows for the recovery of low-grade heat, such as industrial waste heat, increasing the total heat storage capacity. The heat injection flow rate is adjusted via feedback from the flow sensor (5) to ensure stability. The baseline value.

[0094] 3. After completing one heat storage cycle, the intelligent controller (8) determines whether the heat storage cycle is more than halfway through (e.g., the third month of a 6-month cycle) based on the built-in clock:

[0095] If less than half of the data has been collected, return to the data acquisition step and continue the heat storage cycle.

[0096] If more than half has passed, activate the heat loss compensation device (9): when When the temperature is ≤60℃, the electric heating module operates, heating the upper water temperature to 62℃ before automatically stopping. The heating power is 5kW, and the heating time is controlled by a PID algorithm to avoid overshoot. This mechanism actively compensates for heat loss during long-term static operation, ensuring that the upper water temperature in the tank remains stable at around 62℃ in the early stages of winter.

[0097] During implementation, the heat storage phase is preferably executed multiple times a day to adapt to heat source fluctuations; the intelligent controller (8) records historical data for optimizing threshold settings.

[0098] For the exothermic phase:

[0099] 1. Intelligent controller (8) data acquisition , , , and the initial flow of the load flow sensor (5) (Preferred rating value) ).according to Values ​​determine load requirements:

[0100] High demand: <18℃ (requires strong heating), for example, in cold mornings or nights.

[0101] Medium demand: 18℃≤ ≤22℃ (basic heating), for example, during normal temperature periods.

[0102] Low demand: >22℃ (weak heating), for example, on a sunny afternoon.

[0103] 2. The intelligent controller (8) activates the "dynamic heat release" function by adjusting the speed of the load circulation pump (7) and the outlet water temperature. To achieve synergy between flow rate and temperature:

[0104] Under high demand: The controller adjusts the speed of the load circulation pump (7) to 1.2 times the rated flow rate (1.2). The outlet water temperature is set via a mixing valve or electric auxiliary heating device. = +5℃. For example, if If it is 50℃, then Set to 55℃ to quickly raise the indoor temperature.

[0105] When demand is high: maintain pump speed at rated flow rate F0, outlet water temperature T 出 Take T directly 中 (Water is drawn from the middle layer transition zone) to avoid energy waste.

[0106] Under low demand: Pump speed drops to 0.8. , Set as -5℃, reducing the water supply temperature and saving energy. During the control process, the flow sensor (5) provides real-time feedback, and the controller fine-tunes the pump speed through the PID algorithm to ensure stable flow.

[0107] 3. After heat release regulation, the intelligent controller (8) monitors... :

[0108] like ≥35℃ indicates that the water tank has sufficient heat. Return to the parameter acquisition step and continue dynamic heat release.

[0109] like <35℃, activate the heat loss compensation device (9) to heat the lower layer of water: the electric heating module works, and... Stop heating once it reaches 38°C. Heating is preferably performed during heat release intervals to avoid conflict with load demands and ensure continuous heating.

[0110] During implementation, the heat release phase is cycled every 30 minutes, and the intelligent controller (8) adjusts the temperature based on historical data. Predict load changes based on data and adjust parameters in advance.

[0111] In some embodiments, the temperature threshold (such as a first temperature threshold, a third temperature threshold, etc.) in the above method is a fixed value, or it can be combined with variables that are dynamically adjusted according to seasonal environmental parameters to improve the accuracy of regulation.

[0112] Threshold correction during the summer heat storage phase: First temperature threshold (high temperature judgment value of heat source) With the average daily solar radiation intensity I (unit: The ambient humidity H (unit: %) is dynamically adjusted, and the formula is:

[0113] ;

[0114] in, Use the base threshold (e.g., 60°C). Standard solar radiation intensity (e.g.) ), Standard humidity (e.g., 60%). This is a correction factor. When sunlight is strong and humidity is low, Increased to prioritize the storage of higher quality heat.

[0115] Threshold correction for the winter heat release phase: Third temperature threshold (indoor low temperature judgment value) Corrected for outdoor wind speed v (unit: m / s), the formula is: ;

[0116] in, Use the base threshold (e.g., 18℃). Wind speed coefficient (take) The higher the wind speed (the faster the heat dissipation), the better. Appropriately increase the intensity to initiate enhanced heat release earlier.

[0117] In some embodiments, the method may further include:

[0118] Based on seasonal weather forecasting models and load demand forecasting models, the control benchmark temperature for the target heat control phase is dynamically adjusted; the seasonal weather forecasting model is used to predict the trend of ambient temperature change within a specified period in the future, and the load demand forecasting model is used to predict the indoor heat load demand within a specified period in the future.

[0119] If it is predicted that the future ambient temperature will continue to be higher or lower than the historical average, the temperature threshold of the heat storage stage or the heat release stage will be adjusted accordingly to match the heat storage or heat release strategy of the stratified hot water storage tank with the prediction results.

[0120] Compared with the prior art, this application achieves the following significant technical effects:

[0121] Significantly reduced heat loss rate: The layered water tank structure and zoned temperature control reduce the mixing of hot and cold water, thereby reducing the heat loss rate during long-term heat storage and improving heat storage efficiency.

[0122] Improved heat source utilization: Through differentiated heat storage, medium-temperature heat sources of 45℃-55℃ can be recovered, increasing the total heat storage and avoiding the waste of low-grade heat.

[0123] Load response optimization: The dynamic heat release strategy adjusts the flow rate and temperature in real time based on the indoor temperature, reducing heating energy consumption in winter and eliminating the risk of heating interruption, thus improving comfort.

[0124] Enhanced system stability: The active heat loss compensation mechanism replenishes heat during the halfway point of the heat storage cycle and the heat release phase, maintaining temperature stability, reducing reliance on auxiliary heat sources, and better meeting the needs of large-scale applications.

[0125] Corresponding to the above method, embodiments of this application also provide a control device for a cross-seasonal thermal storage system, such as... Figure 3 As shown, the device includes:

[0126] The acquisition unit 310 is used to acquire the current ambient temperature within the current time period after determining the current season type; the current season type includes summer and winter.

[0127] The acquisition unit 320 is used to enter the target thermal control stage if the current ambient temperature is detected to meet the thermal control conditions corresponding to the current season type. During the target thermal control stage, the temperature of different layers in the stratified hot water storage tank and the control reference temperature corresponding to the corresponding thermal control conditions are acquired. The target thermal control stage includes a heat storage stage and a heat release stage.

[0128] The control unit 330 is used to control the heat storage of the layered hot water storage tank differently through the heat source system according to the control reference temperature when the target heat control stage is the heat storage stage; and to control the heat release parameters of the middle transition zone of the layered hot water storage tank according to the control reference temperature when the target heat control stage is the heat release stage.

[0129] The functions of each functional unit of the control device for the cross-seasonal thermal storage system provided in the above embodiments of this application can be realized through the above-described methods and steps. Therefore, the specific working process and beneficial effects of each unit in the control device for the cross-seasonal thermal storage system provided in the embodiments of this application will not be repeated here.

[0130] This application also provides an electronic device, such as... Figure 4 As shown, it includes a processor 410, a communication interface 420, a memory 430, and a communication bus 440, wherein the processor 410, the communication interface 420, and the memory 430 communicate with each other through the communication bus 440.

[0131] Memory 430 is used to store computer programs;

[0132] When the processor 410 executes the program stored in the memory 430, it performs the following steps:

[0133] After determining the current season type, obtain the current ambient temperature within the current time period; the current season type includes summer and winter;

[0134] If the current ambient temperature is detected to meet the thermal control conditions corresponding to the current season type, the target thermal control stage is entered. During the target thermal control stage, the temperature of different layers in the stratified hot water storage tank and the control reference temperature corresponding to the thermal control conditions are collected. The target thermal control stage includes a heat storage stage and a heat release stage.

[0135] When the target thermal regulation stage is the heat storage stage, the heat source system performs differentiated heat storage regulation on the stratified hot water storage tank according to the regulation reference temperature.

[0136] When the target thermal regulation stage is the heat release stage, the heat release parameters of the middle transition zone of the layered hot water storage tank are regulated according to the regulation reference temperature.

[0137] The communication bus mentioned above can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in the diagram, but this does not mean that there is only one bus or one type of bus.

[0138] The communication interface is used for communication between the aforementioned electronic devices and other devices.

[0139] The memory may include random access memory (RAM) or non-volatile memory (NVM), such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0140] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0141] The implementation methods and beneficial effects of the various components of the electronic device in the above embodiments for solving the problem can be found in [reference needed]. Figure 2 The steps in the illustrated embodiments are used to implement the electronic device. Therefore, the specific working process and beneficial effects of the electronic device provided in this application will not be repeated here.

[0142] In another embodiment provided in this application, a computer-readable storage medium is also provided, which stores instructions that, when executed on a computer, cause the computer to perform the control method of the cross-seasonal thermal storage system described in any of the above embodiments.

[0143] In another embodiment provided in this application, a computer program product containing instructions is also provided, which, when run on a computer, causes the computer to execute the control method of the cross-seasonal thermal storage system described in any of the above embodiments.

[0144] Those skilled in the art will understand that the embodiments in this application can be provided as methods, systems, or computer program products. Therefore, the embodiments in this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the embodiments in this application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0145] This application describes embodiments of methods, apparatus (systems), and computer program products according to embodiments of this application with reference to flowchart illustrations and / or block diagrams. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0146] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0147] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0148] Although preferred embodiments have been described in this application, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of this application.

[0149] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of the embodiments of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims in this application and their equivalents, then this application also intends to include these modifications and variations.

Claims

1. A method for regulating a cross-seasonal thermal storage system, characterized in that, In an intelligent controller applied to a cross-seasonal thermal storage system, the cross-seasonal thermal storage system further includes a layered hot water storage tank, a heat source system, and a load system. The layered hot water storage tank includes an upper high-temperature zone, a middle transition zone, and a lower low-temperature zone. The method includes: After determining the current season type, obtain the current ambient temperature within the current time period; the current season type includes summer and winter; If the current ambient temperature is detected to meet the thermal control conditions corresponding to the current season type, the target thermal control stage is entered. During the target thermal control stage, the temperature of different layers in the stratified hot water storage tank and the control reference temperature corresponding to the thermal control conditions are collected. The target thermal control stage includes a heat storage stage and a heat release stage. When the target heat regulation stage is the heat storage stage, the heat source system performs differentiated heat storage regulation on the layered hot water storage tank according to the regulation reference temperature; when the target heat regulation stage is the heat release stage, the heat release parameters of the middle transition zone of the layered hot water storage tank are regulated according to the regulation reference temperature. The cross-seasonal thermal storage system also includes a thermal source circulation pump connected to the thermal source system. The other end of the thermal source circulation pump is connected to the upper inlet and the middle inlet of the stratified hot water storage tank, respectively. If the current season is summer, the target thermal control stage is the thermal storage stage, and the control reference temperature corresponding to the corresponding thermal control conditions is the thermal source temperature of the thermal source system. When the heat source temperature is not less than the first temperature threshold, the first valve of the heat source circulation pump is opened to inject high-temperature hot water from the heat source system into the upper high-temperature zone of the stratified hot water storage tank. When the temperature of the upper high-temperature zone reaches the first target temperature, the first valve of the heat source circulation pump is closed to stop heat storage. When the heat source temperature is between the second temperature threshold and the first temperature threshold, the second valve of the heat source circulation pump is opened to inject medium-temperature hot water from the heat source system into the middle transition zone of the stratified hot water storage tank. When the temperature of the middle transition zone reaches the second target temperature, the second valve of the heat source circulation pump is closed to stop heat storage. The cross-seasonal thermal storage system also includes a load circulation pump connected to the load system, and the other end of the load circulation pump is connected to the middle inlet of the stratified hot water storage tank; if the current season type is winter, the target thermal control stage is the heat release stage, and the control reference temperature corresponding to the corresponding thermal control conditions is the indoor temperature of the load system. If the indoor temperature is less than the third temperature threshold, the flow rate of the load circulation pump is adjusted to M times the rated flow rate, and the temperature of the middle transition zone of the stratified hot water storage tank is controlled to increase the preset temperature; M is a positive number greater than 1. If the indoor temperature is between the third and fourth temperature thresholds, the rated flow rate of the load circulation pump and the temperature of the middle transition zone are kept constant. If the indoor temperature is greater than the fourth temperature threshold, the flow rate of the load circulation pump is adjusted to N times the rated flow rate; N is a positive number less than 1, and the temperature of the middle transition zone of the stratified hot water storage tank is controlled to decrease to a preset temperature.

2. The method as described in claim 1, characterized in that, The interseasonal thermal storage system further includes heat loss compensation devices, respectively installed in the upper high-temperature zone, the middle transition zone, and the lower low-temperature zone of the layered hot water storage tank; the method further includes: When the heat storage cycle is halfway through or the temperature in the lower low-temperature zone is below the corresponding threshold, the heat loss compensation device is activated to heat the water in the corresponding layer to maintain temperature stability.

3. The method as described in claim 2, characterized in that, When the heat storage cycle is halfway through or the temperature of the lower layer falls below the corresponding threshold, the heat loss compensation device is activated to heat the water in the corresponding layer, including: During the heat storage phase, if the heat storage cycle is more than halfway through, the heat loss compensation device in the upper layer is activated to maintain the upper layer temperature at the third target temperature before shutting down the heat loss compensation device.

4. The method as described in claim 2, characterized in that, When the heat storage cycle is halfway through or the temperature of the lower layer falls below the corresponding threshold, the heat loss compensation device is activated to heat the water in the corresponding layer, including: During the heat release phase, if the temperature of the lower low-temperature zone of the stratified hot water storage tank is less than the fifth temperature threshold, the heat loss compensation device for the lower low-temperature zone is activated to maintain the temperature of the lower low-temperature zone at the fourth target temperature before the heat loss compensation device is turned off.

5. The method as described in claim 1, characterized in that, The method further includes: When the flow rate in the target pipe is detected to be 0, the heat source circulation pump is shut down and an alarm is triggered; the target pipe is the heat source pipe between the heat source system and the heat source circulation pump or the load pipe between the middle outlet of the partitioned hot water storage tank and the load circulation pump. When the temperature of the upper high-temperature zone exceeds the sixth temperature threshold of 70°C during the heat storage stage, disconnect the connection with the heat source, shut off the corresponding heat loss compensation device, and open the exhaust valve of the upper high-temperature zone to dissipate heat. When the flow rate through the load circulation pump is less than 50% of the rated flow rate during the heat release phase, reduce the load pump speed and trigger an alarm.

6. A control device for a cross-seasonal thermal storage system, characterized in that, The control method for the interseasonal thermal storage system according to any one of claims 1-5, the apparatus comprising: The acquisition unit is used to acquire the current ambient temperature within the current time period after determining the current season type; the current season type includes summer and winter. The data acquisition unit is used to enter the target thermal control stage if the current ambient temperature is detected to meet the thermal control conditions corresponding to the current season type. During the target thermal control stage, the unit acquires the temperature of different layers in the stratified hot water storage tank and the control reference temperature corresponding to the thermal control conditions. The target thermal control stage includes a heat storage stage and a heat release stage. The control unit is used to control the differential heat storage of the stratified hot water storage tank through the heat source system according to the control reference temperature when the target heat control stage is the heat storage stage; and to control the heat release parameters of the middle transition zone of the stratified hot water storage tank according to the control reference temperature when the target heat control stage is the heat release stage. The cross-seasonal thermal storage system also includes a thermal source circulation pump connected to the thermal source system. The other end of the thermal source circulation pump is connected to the upper inlet and the middle inlet of the stratified hot water storage tank, respectively. If the current season is summer, the target thermal control stage is the thermal storage stage, and the control reference temperature corresponding to the corresponding thermal control conditions is the thermal source temperature of the thermal source system. The control unit is specifically used for: when the heat source temperature is not less than a first temperature threshold, starting the first valve of the heat source circulation pump to open, injecting high-temperature hot water from the heat source system into the upper high-temperature zone of the stratified hot water storage tank, and when the temperature of the upper high-temperature zone reaches the first target temperature, closing the first valve of the heat source circulation pump to stop heat storage; when the heat source temperature is between a second temperature threshold and the first temperature threshold, starting the second valve of the heat source circulation pump to open, injecting medium-temperature hot water from the heat source system into the middle transition zone of the stratified hot water storage tank, and when the temperature of the middle transition zone reaches the second target temperature, closing the second valve of the heat source circulation pump to stop heat storage; The cross-seasonal thermal storage system also includes a load circulation pump connected to the load system, and the other end of the load circulation pump is connected to the middle inlet of the stratified hot water storage tank; if the current season type is winter, the target thermal control stage is the heat release stage, and the control reference temperature corresponding to the corresponding thermal control conditions is the indoor temperature of the load system. The control unit is further specifically configured to: if the indoor temperature is less than a third temperature threshold, adjust the flow rate of the load circulation pump to M times the rated flow rate, and control the temperature of the middle transition zone of the stratified hot water storage tank to increase a preset temperature; M is a positive number greater than 1; if the indoor temperature is between the third and fourth temperature thresholds, maintain the rated flow rate of the load circulation pump and the temperature of the middle transition zone unchanged; if the indoor temperature is greater than the fourth temperature threshold, adjust the flow rate of the load circulation pump to N times the rated flow rate; N is a positive number less than 1, and control the temperature of the middle transition zone of the stratified hot water storage tank to decrease a preset temperature.

7. An electronic device, characterized in that, The electronic device includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, when executing a program stored in memory, implements the method of any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method described in any one of claims 1-5.

Images