Self-activation wall system based on PID intelligent thermal control

Abstract

The invention discloses a self-activation wall system based on PID intelligent thermal control. The self-activation wall system comprises a photovoltaic panel, a phase change heat storage device, an embedded water pipe, a heavy wall, an EPS foam board, a gypsum board, a sensor, a communication control unit, a controller, a water pump, a PID controller and auxiliary equipment. Wherein the photovoltaic panel, the phase change heat storage device, the embedded water pipe, the heavy wall, the EPS foam board and the gypsum board are transversely and tightly arranged. According to the invention, through photovoltaic driving phase change embedded pipes, efficient embedded pipe energy storage and PID intelligent control, accurate adjustment of a low-energy-consumption active building enclosure structure and an indoor thermal environment is realized, and then balance of building energy conservation and consumption reduction and human settlement environment requirements is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal control walls, and particularly to a self-activating wall system based on PID intelligent thermal control. Background Art

[0002] Nowadays, building energy consumption and carbon emissions have long accounted for an important proportion. Therefore, it is particularly important to develop low-carbon building technologies. The building envelope is an important barrier to improving the indoor thermal environment and also a technical platform for utilizing solar energy. Fully exploring the potential of the building envelope is a hot topic in current building research. As an innovative building envelope insulation technology, the thermal activation wall system has received extensive attention and application from scholars and designers in the building field due to its advantages such as low-grade energy use, adjustable thermal conductivity of the envelope, and high integration of components. The traditional thermal activation wall system can make full use of low-grade cold energy in summer to weaken the building's heat load, thereby reducing building energy consumption. In winter, it can make full use of low-grade heat energy to reduce the loss of building load, provide heat load to the building while maintaining heat insulation, and thus improve building comfort. However, in summer, due to the complete insulation of the wall, not only is the utilization rate of solar energy not high, but also the energy consumption driven by low-grade energy will increase. In addition, it is difficult to make full use of solar energy for heating in winter, and the regulation of the indoor thermal environment is insufficient, making it extremely difficult to accurately meet the comfortable requirements of the indoor thermal environment, greatly weakening its actual utilization scenarios. Therefore, how to fully improve the utilization rate of solar energy, reduce the energy consumption of the thermal activation wall, and achieve precise comfort requirements for the indoor thermal environment has become the key to the popularization and implementation of the thermal activation wall.

[0003] Although the traditional thermal activation wall system can actively utilize low-grade cold and heat energy to reduce the load, its driving energy consumption is too large and the regulation of the indoor thermal environment is insufficient. The current thermal activation walls do not precisely consider the comfortable requirements of the indoor thermal environment. In summer, due to the action of solar radiation, the indoor temperature rises. Using traditional thermal activation walls is prone to heat accumulation, resulting in uneven load supply and extremely high energy consumption. In winter, due to the influence of outdoor climate, heat waste is easily formed, indirectly increasing energy consumption. How to effectively improve the indoor thermal environment requirements while reducing the building's supply energy consumption has become the key to the development of the thermal activation wall. Compared with simple active technologies, passive energy-saving technologies have lower energy consumption. The low-carbon transformation of buildings has become a current hot topic, especially the coupling of active and passive building technologies, which helps buildings transform from energy-consuming to energy-producing buildings. Summary of the Invention

[0004] To solve the technical problems existing in the prior art, the present invention provides a self-activating wall system based on PID intelligent thermal control, which realizes a low-energy active building envelope and precise regulation of the indoor thermal environment through photovoltaic-driven phase change embedded pipes, high-efficiency energy storage in embedded pipes, and PID intelligent control, thereby achieving a balance between building energy conservation and consumption reduction and the requirements of the human settlement environment.

[0005] The present invention is implemented by the following technical solutions: A self-activating wall system based on PID intelligent thermal control, which consists of a photovoltaic panel, a phase change heat storage device, embedded water pipes, a heavy wall, an EPS foam board, a gypsum board, sensors, a communication control unit, a controller, a water pump, a PID controller, and auxiliary equipment; among them, the photovoltaic panel, the phase change heat storage device, the embedded water pipes, the heavy wall, the EPS foam board, and the gypsum board are arranged horizontally and closely. The photovoltaic panel is in close contact with the phase change heat storage device in terms of structure and is connected to the water pump and the PID controller via the controller in terms of circuit. The phase change heat storage device is in close contact with the embedded water pipes and consists of a paraffin phase change material and bionic fins, and is fixedly encapsulated in an aluminum plate; among them, the filling volume of the paraffin phase change material and the size of the embedded water pipes are set according to the local climate. The embedded water pipes are arranged side by side in the middle of the phase change heat storage device, and the roots of the bionic fins are arranged in a ring around them and extend into the paraffin phase change material, and the two are in full contact; the embedded water pipes conduct low-grade cold energy in summer to block solar thermal energy and provide cold load for the phase change heat storage device and the indoor side at the same time; in winter, they conduct low-grade thermal energy and provide heat load for the phase change heat storage device and the indoor side at the same time. The heavy wall is composed of cement and bricks and is tightly sandwiched between the phase change heat storage device and the EPS foam board. One side of the PID controller is connected to the indoor temperature sensor via the communication control unit to collect temperature information, and the other side is connected to the water pump through an electrical signal; when the actually measured temperature is lower than the comfortable temperature, the PID controller increases the water flow rate to improve the heat transfer of the embedded water pipes and raises the indoor temperature to the target value; when the actual room temperature is higher than the comfortable temperature, the PID controller reduces the water flow rate to reduce heat transfer and makes the room temperature drop to the set value. The communication control unit conducts data acquisition and preprocessing, cleans and selects a large amount of temperature data, and then transfers the data to the PID controller. The water pump is powered by the photovoltaic panel and the auxiliary power grid, and its size is controlled by the PID controller. At the same time, it is connected to the embedded water pipes through water flow. The auxiliary equipment includes the fixation of the wall and the equipment, as well as the connection of electrical signals.

[0006] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. The present invention realizes the precise regulation of the low-energy active building envelope and the indoor thermal environment through photovoltaic-driven phase change embedded pipes, efficient embedded pipe energy storage, and PID intelligent control, thereby achieving the balance between building energy conservation and consumption reduction and the needs of the human settlement environment.

[0007] 2. In summer, the present invention can use the phase change embedded pipes to cool the photovoltaic system, improve the power generation, and continuously drive the phase change embedded pipes to supply cooling load to the indoor, achieving the dual functions of high power generation and low energy consumption for cooling load supply; in winter, it can use the phase change embedded pipes to supply heating load to the indoor, and at the same time, the phase change heat storage device of the bionic fin type can effectively absorb solar energy to achieve active and passive coupled heating; in addition, regardless of winter or summer, the PID controller can effectively receive the temperature feedback of the building inner wall, realize the optimized regulation of the cooling and heating load supply of the phase change embedded pipes, achieve intelligent thermal control, and greatly increase the reliability and adaptability of the system.

[0008] 3. The photovoltaic panels of the present invention are arranged on the outside and are in close contact with the phase change embedded pipes. The water pipes inside the phase change embedded pipes can provide cold energy to the phase change heat storage device, and after being absorbed by the phase change heat storage device, it can effectively maintain the photovoltaic panels within a reliable temperature range, thereby improving the efficiency of the photovoltaic panels; after the photovoltaic panels generate electricity, they can supply energy to the water pump and the PID controller through the controller respectively, realizing low energy consumption or even zero energy consumption of the water pipes, and thus continuously realizing the supply of active low-grade energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic plan view of the structure of the system of the present invention; Figure 2 is an axial view of the structure of the system of the present invention; Figure 3 is a schematic diagram of the working principle of the PID controller. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present invention will be further described in detail below in conjunction with the embodiments and the drawings, but the embodiments of the present invention are not limited thereto.

[0011] Embodiment As Figure 1 , Figure 2 shown, the self-activating wall system based on PID intelligent thermal control in this embodiment includes photovoltaic panels, a phase change heat storage device, embedded water pipes, a heavy wall, an EPS foam board, a gypsum board, sensors, a communication control unit, a controller, a water pump, a PID controller, and auxiliary equipment; among them, the photovoltaic panels, the phase change heat storage device, the embedded water pipes, the heavy wall, the EPS foam board, and the gypsum board are arranged horizontally and closely.

[0012] Specifically, the specific situations of the respective component modules of the self-activating wall system of the present invention are as follows: The photovoltaic panels are in close contact with the phase change heat storage device in terms of structure and are connected to the water pump and the PID controller via the controller in terms of circuit. The waste heat generated by the photovoltaic power generation can be absorbed by the phase change heat storage device to maintain the photovoltaic panels below a certain temperature, improve the power generation, and at the same time, the controller distributes the electric energy to the water pump and the PID controller; The phase change heat storage device and the embedded water pipe are phase change embedded pipes, which are in close contact with each other and are composed of paraffin phase change material and bionic fins, and are fixedly encapsulated in an aluminum plate; among them, the filling volume of the paraffin phase change material and the size of the embedded water pipe are determined according to the local climate; the bionic fin type phase change heat storage device can increase the contact area between the embedded water pipe and the phase change material in winter and summer, and strengthen the cold / heat energy transfer; in summer, the phase change heat storage device can maintain the temperature of the photovoltaic panel, store the cold load transmitted by the water pipe at the same time, and block the solar heat load; in winter, the phase change heat storage device can receive the heat loads from the sun and the embedded water pipe respectively, block the outdoor fluctuating environment and supply heat load to the indoor. The embedded water pipes are arranged side by side in the middle of the phase change heat storage device, and the roots of the bionic fins are arranged in a ring around them and extend into the paraffin phase change material, and the two are in full contact; the embedded water pipes can pass low-grade cold energy in summer to block solar heat energy, and at the same time provide cold load to the phase change heat storage device and the indoor side, reducing the building's summer energy consumption; in winter, it can pass low-grade heat energy, and at the same time provide heat load to the phase change heat storage device and the indoor side to heat the building. The heavy wall is composed of cement and bricks and is tightly sandwiched between the phase change heat storage device and the EPS foam board. The working process of the PID controller is as Figure 3 shown. One side of the PID controller is connected to the indoor temperature sensor via the communication control unit to collect temperature information, and the other side is connected to the water pump through an electrical signal; when the actually measured temperature is lower than the comfortable temperature, the PID controller increases the water flow rate to improve the heat transfer of the embedded water pipe, so as to quickly raise the indoor temperature to the target value; when the actual room temperature is higher than the comfortable temperature, the PID controller reduces the water flow rate and reduces the heat transfer, so as to lower the room temperature to the set value; this control mechanism based on temperature difference feedback can make the system respond sensitively and accurately to the indoor temperature change, ensuring that the temperature is within the set comfortable range, that is, 22 to 26 degrees Celsius; whether it is winter or summer, the photovoltaic panel, the phase change heat storage device, the embedded water pipe and the PID control are coupled to achieve automatic energy supply; the phase change heat storage device and the embedded water pipe play active and passive thermal control technologies, on the one hand, it can increase the power generation of the photovoltaic panel, and on the other hand, it can form a cold and heat barrier to block the influence of the outdoor environment on the indoor environment; the PID controller can always feedback the indoor thermal comfort demand, and then effectively control the active load demand, ensuring the maximum reduction of energy consumption while meeting the thermal comfort demand. The communication control unit has the functions of data acquisition and preprocessing, can clean and select a large amount of temperature data, and then transfer the data to the PID controller. The water pump is powered by the photovoltaic panel and the auxiliary power grid, the size is controlled by the PID controller, and it is connected to the embedded water pipe through water flow. The auxiliary equipment includes the fixation of walls, equipment, etc., and the connection of electrical signals.

[0013] Specifically, the specific implementation process of the self-activating wall system in this embodiment is as follows: In summer, due to the direct solar radiation, the photovoltaic panel generates electricity and supplies energy to the water pump and the PID controller via the controller. The indoor temperature increases due to the increase in outdoor temperature. The temperature information is transmitted to the communication control unit via the sensor at intervals of every 10 s for data processing, and some error data can be removed, and then transmitted to the PID controller. When the actual temperature is higher than the comfortable temperature, at this time, the water pump transfers low-grade cold energy to the embedded water pipe, and by controlling the water flow rate and water temperature, the indoor temperature can be quickly reduced to reach the comfortable temperature range. At this time, the phase change heat storage device can absorb the waste heat from the photovoltaic panel and at the same time absorb the cold energy from the embedded water pipe to maintain the photovoltaic panel at a stable temperature, thereby increasing the power generation and continuously supplying energy to the water pump and the PID controller.

[0014] In winter, due to the direct solar radiation, the photovoltaic panel generates electricity and supplies energy to the water pump and the PID controller via the controller. When the sunlight is insufficient, the power grid can be assisted for auxiliary power supply. The indoor temperature decreases due to the decrease in outdoor temperature. The temperature information is transmitted to the communication control unit via the sensor and then transmitted to the PID controller. When the actual temperature is lower than the comfortable temperature, at this time, the water pump transfers low-grade heat energy to the embedded water pipe, and by controlling the water flow rate and water temperature, the indoor temperature can be quickly increased. At this time, the phase change heat storage device can absorb solar heat energy and the heat energy of the embedded water pipe, which can not only form a heat barrier, but also supply heat load to the indoor, reduce the active supply load of the embedded water pipe, and reduce the energy consumption of the water pump. Compared with the traditional thermally activated wall, the self-activating wall system in this embodiment not only makes full use of solar power generation and phase change high-efficiency energy storage, but also can PID control the indoor thermal comfort, adjust the active supply load, and minimize the active energy consumption in winter and summer while ensuring the indoor thermal environment requirements.

[0015] Specifically, this embodiment can also be transformed as follows according to the actual application situation: The phase change material and the phase change heat storage volume can be selected according to the outdoor climate differences in different regions, such as the temperature and heat capacity of the phase change material, etc., to fully meet the summer heat insulation requirements. If the temperature is too low or the volume is too small, the phase change may completely melt, which is not conducive to photovoltaic power generation; The water volume in the embedded water pipe can be adjusted, and the number of embedded water pipes can be increased or decreased to meet the indoor thermal comfort requirements under different climates; The arrangement method and quantity of the sensors can be specifically arranged according to the size of the indoor environment; The shape of the bionic fin is in the form of a leaf vein bionic shape. Based on the leaf vein energy transfer theory, it can be known that the heat transfer is enhanced; for the embedded water pipe with a circular arrangement of leaf vein bionic fins, etc., the quantity can be increased or decreased according to the specific situation, but it shows a circular arrangement, such as 4 groups arranged at 90 degrees, 5 groups arranged at 72 degrees, etc.; The PID controller mainly controls the water flow rate, and can also control the water temperature by connecting other devices such as a water bath; various control methods and control strategies can be given to the PID.

[0016] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. A self-activating wall system based on PID intelligent thermal control, characterized in that It consists of a photovoltaic panel, a phase change heat storage device, an embedded water pipe, a heavy wall, an EPS foam board, a gypsum board, a sensor, a communication control unit, a controller, a water pump, a PID controller, and auxiliary equipment; among them, the photovoltaic panel, the phase change heat storage device, the embedded water pipe, the heavy wall, the EPS foam board, and the gypsum board are arranged horizontally and closely.

2. The self-activating wall system based on PID intelligent thermal control according to claim 1, wherein The photovoltaic panel is in close contact with the phase change heat storage device structurally and is connected to the water pump and the PID controller via the controller electrically.

3. The self-activating wall system based on PID intelligent thermal control according to claim 1, characterized in that, The phase change heat storage device is in close contact with the embedded water pipe and consists of a paraffin phase change material and bionic fins, and is fixedly encapsulated in an aluminum plate; among them, the filling volume of the paraffin phase change material and the size of the embedded water pipe are set according to the local climate.

4. The self-activating wall system based on PID intelligent thermal control according to claim 1, characterized in that, The embedded water pipes are arranged side by side in the middle of the phase change heat storage device, and the roots of the bionic fins are arranged in a ring around them and extend into the paraffin phase change material, and the two are in full contact; the embedded water pipes conduct low-grade cold energy in summer to block solar thermal energy and provide cooling load for the phase change heat storage device and the indoor side at the same time; in winter, they conduct low-grade thermal energy and provide heating load for the phase change heat storage device and the indoor side at the same time.

5. The self-activating wall system based on PID intelligent thermal control according to claim 1, characterized in that, The heavy wall is composed of cement and bricks and is tightly sandwiched between the phase change heat storage device and the EPS foam board.

6. The self-activating wall system based on PID intelligent thermal control according to claim 1, characterized in that, One side of the PID controller is connected to the indoor temperature sensor via the communication control unit to collect temperature information, and the other side is connected to the water pump by an electrical signal; when the actually measured temperature is lower than the comfortable temperature, the PID controller increases the water flow rate, improves the heat transfer of the embedded water pipe, and raises the indoor temperature to the target value; when the actual room temperature is higher than the comfortable temperature, the PID controller reduces the water flow rate and reduces the heat transfer to make the room temperature drop to the set value.

7. The self-activating wall system based on PID intelligent thermal control according to claim 1, characterized in that, The communication control unit conducts data acquisition and preprocessing, cleans and selects a large amount of temperature data, and then transmits the data to the PID controller.

8. The self-activating wall system based on PID intelligent thermal control according to claim 1, characterized in that, The water pump is powered by the photovoltaic panel and the auxiliary power grid, and its size is controlled by the PID controller. At the same time, it is in water flow connection with the embedded water pipe.

9. The self-activating wall system based on PID intelligent thermal control according to claim 1, characterized in that, The auxiliary equipment includes the fixation of the wall and the equipment, as well as the connection of the electrical signal.

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