A control method of a photovoltaic energy storage evaporation refrigeration and PEG heat storage intelligent energy-saving window

Abstract

The application discloses a control method of a photovoltaic energy storage evaporation refrigeration and PEG heat storage intelligent energy-saving window, and relates to the technical field of energy-saving windows. The energy-saving window comprises a fixed window frame, a guide window movably connected to the fixed window frame from outside to inside and having the same size, a second photovoltaic panel, a first layer of sliding window, a second layer of sliding window, a third layer of sliding window and a fourth layer of sliding window. The control method of the photovoltaic energy storage evaporation refrigeration and PEG heat storage intelligent energy-saving window integrates multiple functions such as photovoltaic energy storage, refrigeration, heat storage, air guide enhancement, sun-shading and intelligent control, aims to improve the energy efficiency of buildings and the indoor environmental comfort, and realizes substantial energy consumption reduction and carbon emission.

Description

Technical Field

[0001] This invention relates to the field of building energy conservation technology, specifically to a control method for a photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window. Background Technology

[0002] With the increasing severity of the global energy crisis and climate change, building energy conservation has become a crucial issue in modern society. Windows, as the primary channel for heat exchange between a building and the external environment, directly impact indoor comfort and building energy consumption. Traditional windows, mostly using single or double glazing, have high heat transfer coefficients and insufficient insulation, leading to widespread cold winters and excessive summers. Traditional windows suffer from three major drawbacks:

[0003] 1. Poor thermal performance: Single / double-glazed glass has a high heat transfer coefficient (U > 2.5 W / m²·K), resulting in cold winters and hot summers;

[0004] 2. Limited functionality: It lacks the ability to store heat, generate electricity, and actively cool, relying on external energy sources;

[0005] 3. Insufficient intelligence: unable to adapt to seasonal changes. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a control method for a photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window. The aim is to achieve year-round indoor environmental comfort while significantly reducing building energy consumption by integrating multiple functions such as natural ventilation, evaporative cooling, shading, photovoltaic energy storage, thermal storage, and insulation. This window system employs intelligent control technology, automatically adjusting its operating mode according to seasonal and environmental conditions, and features high energy efficiency and environmental friendliness.

[0007] To achieve the above-mentioned technical objectives, the present invention employs the following technical means:

[0008] A control method for a photovoltaic energy storage evaporative cooling and PEG thermal storage smart energy-saving window, the energy-saving window comprising a fixed window frame and sequentially movable components of the same size connected to the fixed window frame from the outside to the inside:

[0009] The air guide window includes a window frame and several single panels that are rotatably connected to the window frame side by side. Each single panel is connected to the window frame through a rotation drive unit, and the outer surface of each single panel integrates a first photovoltaic panel.

[0010] Second photovoltaic panel;

[0011] The first layer of sliding windows has a first low-e film applied to the outer side of the window sash glass;

[0012] The second-layer sliding window has a laminated glass pane filled with inert gas.

[0013] The third-layer sliding window has a second low-e film applied to the interior side of its glass sash.

[0014] The fourth-layer sliding window has a laminated glass sash filled with phase change heat storage material.

[0015] Summer window opening mode: The air guide window is located separately on one side of the fixed window frame and the single panel is in the open state. A cooling module is installed on the ventilation channel after the single panel is opened. The cooling module is used to reduce the temperature of the natural wind entering the room. The second photovoltaic panel and the fourth layer of sliding windows are located on the other side of the fixed window frame.

[0016] Summer closed window mode: The air guide window, the first-layer sliding window, and the second-layer sliding window are all located on the same side of the fixed window frame. The single panel on the air guide window is closed, blocking solar radiation while utilizing the first photovoltaic panel for photoelectric conversion; the first low-e film reflects heat outwards, and the second-layer sliding window uses inert gas for cold and heat insulation; the second photovoltaic panel, the third-layer sliding window, and the fourth-layer sliding window are all located on the other side of the fixed window frame. The second photovoltaic panel provides strong shading while also performing photoelectric conversion. Winter closed window mode: The air guide window, the second photovoltaic panel, the first-layer sliding window, and the second-layer sliding window are all located on the same side of the fixed window frame, while the third-layer and fourth-layer sliding windows are located on the other side of the fixed window frame. The second low-e film transmits sunlight into the room while reflecting indoor heat back into the room; the phase change heat storage material in the fourth-layer sliding window absorbs and stores solar radiation heat during the day and releases heat at night for insulation.

[0017] Winter window opening mode and spring / autumn window opening mode:

[0018] The air guide window, the second photovoltaic panel, and the four-layer sliding window are simultaneously moved to the same side of the fixed window frame.

[0019] Beneficial effects:

[0020] 1. Reduced heat transfer coefficient: The present invention uses four layers of glass combined with inert gas filling, which greatly improves the heat insulation performance of the window and significantly reduces the heat transfer coefficient, thereby reducing the energy consumption of air conditioning and heating.

[0021] 2. Heat storage and insulation: By using PEG phase change materials to absorb and release heat, the indoor temperature can be stabilized in winter, reducing dependence on external energy sources.

[0022] 3. Solar energy utilization: Photovoltaic panel power generation not only meets the system's own operating needs, but also reduces dependence on grid power, directly reducing carbon emissions.

[0023] In one optional embodiment, the inert gas is argon;

[0024] The phase change heat storage material is a PEG phase change material with a molecular weight of 1000-1500, a phase change temperature of 25-40℃, and a latent heat value of ≥150 kJ / kg.

[0025] In one optional embodiment, the refrigeration module is an evaporative refrigeration module, comprising:

[0026] Multiple absorbent felt blocks are disposed inside the air guide window, and a water conveying assembly is connected to the absorbent felt blocks. One absorbent felt block is disposed on the ventilation channel after every two single panels are opened.

[0027] Beneficial effects: This invention utilizes the low-energy evaporative cooling technology of felt blocks to replace traditional air conditioning, further saving electricity.

[0028] In one optional embodiment, the bottom of the box is provided with a first housing, in which an energy storage module is arranged. The energy storage module is connected to the first photovoltaic panel and the second photovoltaic panel and is used to supply power to the rotary drive unit and the cooling module.

[0029] The water delivery assembly includes a water tank disposed within the first tank and a water pump disposed within the water tank.

[0030] The top of the fixed window frame is provided with a second box, in which a main water supply pipe and several branch water supply pipes connected to the main water supply pipe are arranged. The main water supply pipe is connected to the outlet of the water pump, and each absorbent felt block is connected to one of the branch water supply pipes. The width of the first box and the width of the second box are the same as the width of the fixed window frame.

[0031] Beneficial effects: This invention sets up boxes with the same width as the fixed window frame at the top and bottom of the fixed window frame, respectively, to conceal the wires connected to the power storage module and the water pipes connected to the water tank inside the boxes. This avoids the aging risks caused by exposed wires and water pipes, while ensuring the overall appearance of the energy-saving window is neat.

[0032] In an optional embodiment, it further includes:

[0033] A first temperature probe is installed indoors and a second temperature probe is installed outdoors;

[0034] A first relative humidity probe is installed indoors and a second relative humidity probe is installed outdoors;

[0035] A gas probe, installed indoors, is used to detect indoor carbon dioxide or total volatile organic compound concentrations; a solar radiometer is installed on the outer surface of the first-floor sliding window.

[0036] Based on the national standard "Climate Season Division" (GB / T42074-2022), the current season is determined according to the date or user settings. The system automatically identifies the season or allows the user to manually specify it, thus entering the corresponding control mode. Specifically:

[0037] Summer Mode:

[0038] In summer, if the indoor temperature exceeds 26°C and the indoor carbon dioxide concentration is below 1000ppm, the system will enter summer closed window mode; at the same time, the power generation of the first and second photovoltaic panels and the battery power will be continuously monitored; if the indoor temperature exceeds 26°C and the indoor carbon dioxide concentration exceeds 1000ppm, the system will enter summer open window mode.

[0039] B Winter Mode:

[0040] In winter, when the indoor temperature exceeds 18℃ or when the indoor temperature is below 18℃ and the indoor carbon dioxide concentration exceeds 1000ppm, the system will switch to winter window opening mode and spring / autumn window opening mode; if the indoor temperature is below 18℃ and the indoor carbon dioxide concentration is below 1000ppm, the system will switch to winter window closing mode.

[0041] C. Spring, Summer, and Autumn Patterns:

[0042] In spring, summer, and autumn, when the indoor temperature is between 18°C ​​and 26°C, it enters the winter and spring / autumn window opening modes; when the indoor temperature exceeds 26°C, it operates according to the summer mode; when the indoor temperature is below 18°C, it operates according to the winter mode.

[0043] Beneficial effects: This invention utilizes multiple environmental sensors to monitor indoor and outdoor environmental parameters in real time, and the intelligent control system analyzes the parameters in real time to ensure that the energy-saving window operates in the optimal mode, thereby maximizing energy savings.

[0044] In an optional embodiment, in step A, if the battery charge is below 20%, the first photovoltaic panel and / or the second photovoltaic panel are used for charging to ensure that the system operation is not limited by the power grid.

[0045] If the battery charge is above 80%, stop charging the first and / or second photovoltaic panels to avoid overcharging and damaging the battery.

[0046] Beneficial effects: By using battery power management methods, the system can be ensured to operate without being limited by the power grid, while extending the battery's lifespan.

[0047] In one alternative embodiment, in summer window-opening mode, if the first indoor temperature probe detects that the indoor temperature exceeds 26°C, the cooling module is activated to reduce the temperature of the natural wind entering the room.

[0048] In an optional embodiment, the system further includes an active ventilation module disposed at the lower part of the fixed window frame. The active ventilation module includes a fan assembly arranged side by side and an electric heating wire integrated with the fan.

[0049] In summer window-opening mode, if the indoor first temperature probe and the outdoor second temperature probe detect a temperature difference of ≥2℃ between indoor and outdoor, and the outdoor enthalpy value is calculated to be <65 kJ / kg based on the first and second relative humidity probes, the fan group will be turned on.

[0050] In winter window-closed mode, if the first temperature probe detects an indoor temperature of <18℃, the heating wire will be activated to heat the airflow, which will then be blown into the room by the fan assembly.

[0051] Beneficial effects: The active ventilation module improves indoor ventilation in summer. At the same time, the active ventilation module integrates heating wires, which are activated in winter to heat the airflow and blow it into the room by the fan assembly, thereby increasing the indoor temperature.

[0052] In one optional embodiment, the bottom of the fixed window frame is provided with a box, on which a filter screen is provided on the outdoor side and an openable and closable baffle is provided on the indoor side; the fan assembly and the heating wire integrated with the fan are disposed inside the box.

[0053] Beneficial effects: A filter is installed on the air inlet side of the active ventilation module to filter dust and impurities in the air, and an openable and closable baffle is installed on the air outlet side to prevent external dust or rainwater from entering the room when the active ventilation module is not working.

[0054] In one optional embodiment, electric wheels are provided at the bottom of the air guide window, the bottom of the second photovoltaic panel, the bottom of the first sliding window, the bottom of the second sliding window, and the bottom of the third sliding window.

[0055] In summary, this invention achieves energy conservation and carbon emission reduction through various technical means, providing a multi-functional window that meets multiple needs such as ventilation, cooling, shading, power generation, and heat storage. It can be flexibly adjusted according to seasonal and climate changes, making it widely applicable. It reduces energy consumption and maintenance costs, offering economic advantages in the long run. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of the summer window opening mode of the photovoltaic energy storage evaporative cooling and PEG thermal energy storage intelligent energy-saving window of the present invention;

[0057] Among them, 2 is the second photovoltaic panel; 5 is the air guide window; 12 is the water-absorbing felt block; and 21 is the fourth-layer sliding window.

[0058] Figure 2 This is a schematic diagram of the structure of the photovoltaic energy storage evaporative cooling and PEG thermal energy storage intelligent energy-saving window in winter closed mode of the present invention.

[0059] Among them, 22 is the first layer sliding window; 23 is the second layer sliding window; 24 is the third layer sliding window; and 25 is the fourth layer sliding window.

[0060] Figure 3 This is a schematic diagram of the structure of the photovoltaic energy storage evaporative cooling and PEG thermal energy storage intelligent energy-saving window in summer closed mode of the present invention;

[0061] Figure 4 This is a schematic diagram of the window opening structure for the winter and spring / autumn window opening modes of the photovoltaic energy storage evaporative cooling and PEG thermal energy storage intelligent energy-saving window of the present invention.

[0062] Figure 5 This is a schematic diagram of the overall structure of the photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window of the present invention;

[0063] Among them, 1. Second housing; 3. Porous metal filter; 4. Exhaust fan;

[0064] Figure 6 This is a schematic diagram showing the wiring connections between the battery, exhaust fan, and photovoltaic panel of the photovoltaic energy storage evaporative cooling and PEG thermal energy storage intelligent energy-saving window of the present invention.

[0065] Among them, 6. wires; 7. storage batteries; 10. water pumps;

[0066] Figure 7 This is a schematic diagram of the evaporative cooling module of the present invention.

[0067] Among them, 14 is a rotating shaft; 15 is a hollow shaft;

[0068] Figure 8 This is a schematic diagram showing the connection between the absorbent felt block and the water pipe.

[0069] Among them, 11. Water pipes;

[0070] Figure 9 This is a schematic diagram of the box structure;

[0071] Among them, 18. Box; 3. Porous metal filter screen;

[0072] Figure 10 This is a schematic diagram of the evaporative cooling module of the present invention;

[0073] Among them, 13, water tank;

[0074] Figure 11 Top view showing the connection between the air guide window and the absorbent felt block;

[0075] Figure 12 Axonometric view of the air guide window and absorbent felt block;

[0076] Figure 13 This is a schematic diagram of the connection structure between the exhaust fan and the heating wire in the active ventilation module of the present invention;

[0077] Among them, 16 is the air duct; 17 is the heating wire;

[0078] Figure 14 This is a schematic diagram of the overall structure of the active ventilation module of the present invention;

[0079] Figure 15 This is a schematic diagram showing the connection between the openable or closable baffle and the exhaust fan of the present invention;

[0080] Among them, 20 is a baffle that can be opened or closed;

[0081] Figure 16 This is a schematic diagram of the connection between the photovoltaic energy storage evaporative cooling and PEG thermal energy storage intelligent energy-saving window and the track of the present invention;

[0082] Among them, 26. Window track;

[0083] Figure 17 This is a schematic diagram showing the installation position of the external sensor storage box of the present invention;

[0084] Among them, 27. External sensor storage box: Located on the outdoor side, independent of the window, it houses various sensors for sensing the external environment;

[0085] Figure 18 This is a schematic diagram showing the installation position of the built-in storage box for the sensor of this invention;

[0086] Among them, 28. Sensor built-in storage box: Located on the indoor side, independent of the window, it houses various sensors for sensing the indoor environment;

[0087] Figure 19 This is a schematic diagram of the structure of the four-layer sliding window of the present invention;

[0088] Wherein, 9-1 is the first low-e membrane; 9-2 is the second low-e membrane;

[0089] Figure 20 This is a flowchart of the control process for the photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window of the present invention;

[0090] Figure 21 It is an electric wheel structure on the track that drives the window to slide on the track;

[0091] Among them, 30 are electric wheels, and 31 are electric wires;

[0092] Figure 22 This is a schematic diagram of the air guide window. Detailed Implementation

[0093] The technical solution of the present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0094] Example 1

[0095] This invention discloses a photovoltaic energy storage evaporative cooling and PEG thermal storage smart energy-saving window with a window size of 1.5m × 1.2m, comprising:

[0096] Four-pane glass: thicknesses of 4mm / 6mm / 4mm / 8mm respectively; the first layer is a sliding window with a first low-e film applied to the outer side of the window sash; the second layer of the sliding window is filled with inert gas in the interlayer; the third layer of the sliding window has a second low-e film applied to the inner side of the window sash; the fourth layer is filled with PEG-1000, with a melting point of 35-40℃ and a latent heat of 159 kJ / kg;

[0097] Functional panel assembly: The first photovoltaic panel is integrated into the surface of the air guide window, and the second photovoltaic panel is set independently;

[0098] The evaporative cooling module includes multiple water-absorbing felt blocks located inside the air guide window and a water supply component connected to the water-absorbing felt blocks, wherein one of the water-absorbing felt blocks is installed on the ventilation channel opened between every two single boards.

[0099] An energy storage module is electrically connected to the first photovoltaic panel to supply power to the water conveying component.

[0100] Example 2

[0101] like Figure 1-4 As shown: The working mode of the photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window in Embodiment 1 of the present invention is as follows:

[0102] 1. Summer window opening mode: The air guide window is located separately on one side of the fixed window frame. The opening angle of the air guide window is >45°. The water supply component is activated to supply water to the water-absorbing felt block. The indoor temperature is reduced by using the principle of evaporative cooling. The four sliding windows are located together on the other side of the fixed window frame.

[0103] 2. Winter window-closed mode: The air guide window, the second photovoltaic panel, the first sliding window, and the second sliding window are all located on the same side of the fixed window frame, while the third and fourth sliding windows are located on the other side of the fixed window frame. The second low-e film on the inner side of the third sliding window is transmissive to sunlight entering the room, reflecting indoor heat back into the room. The phase change heat storage material in the fourth sliding window absorbs and stores solar radiation heat during the day and releases heat for insulation at night.

[0104] 3. Summer Window-Closed Mode: The air guide window, the first-layer sliding window, and the second-layer sliding window are all located on the same side of the fixed window frame. When the air guide window is closed, it blocks solar radiation while transmitting power to the energy storage module through the first photovoltaic panel. The first low-e film on the outside of the first-layer sliding window reflects heat outwards, and the second-layer sliding window uses inert gas for cold and heat insulation. The third-layer and fourth-layer sliding windows are located on the other side of the fixed window frame. A second photovoltaic panel, which is a single piece, is installed on the outside of the third-layer sliding window. The dimensions of the second photovoltaic panel are the same as those of the third-layer sliding window. The second photovoltaic panel is electrically connected to the energy storage module, providing strong shading while transmitting electrical energy to the energy storage module.

[0105] 4. Winter and spring / autumn window opening modes: Move the air guide window and the four-layer sliding window to the same side of the fixed window frame at the same time.

[0106] In Embodiments 1 and 2, a first housing is provided at the bottom of the box, and the energy storage module is arranged in the first housing;

[0107] The water delivery assembly includes a water tank disposed within the first tank and a water pump disposed within the water tank.

[0108] The top of the fixed window frame is equipped with a second housing, which houses a main water supply pipe and several branch water supply pipes connected to it. The main water supply pipe is connected to the outlet of the water pump. Each felt has a hollow shaft with holes inside, which is connected to the corresponding branch water supply pipe. This design aims to guide the water in the tank, driven by the water pump, to flow sequentially through the main and branch water supply pipes, and finally evenly saturate the entire felt through the holes in the hollow shaft.

[0109] Example 3

[0110] The difference between this embodiment and embodiment 1 is that the lower part of the fixed window frame is provided with an active ventilation module, including a box located at the bottom of the fixed window frame, a filter screen on the outdoor side of the box, and an openable and closable baffle on the indoor side; the box is provided with a fan group arranged side by side and an electric heating wire integrated with the fan.

[0111] Example 4

[0112] This embodiment adds a control system to embodiment 3: an STM32 microcontroller connects to 8 sensors: temperature and humidity ×4, light ×1, CO2 ×2, and VOC ×1, specifically:

[0113] A first temperature probe is installed indoors and a second temperature probe is installed outdoors;

[0114] A first relative humidity probe is installed indoors and a second relative humidity probe is installed outdoors;

[0115] A gas probe installed indoors is used to detect the concentration of carbon dioxide or total volatile organic compounds; a solar radiometer is installed on the outer window surface of the first layer of glass.

[0116] Example 5

[0117] The working method of Embodiment 4 of the present invention is as follows:

[0118] In summer mode, if the indoor and outdoor temperature difference is ≥2℃ and the outdoor enthalpy is <65 kJ / kg, the air guide window and fan assembly will be turned on.

[0119] In winter mode, move the air deflector to the side without the heat storage body so that the heat storage body is heated by solar radiation; if the indoor temperature is <18℃, start the heating wire to heat the airflow and blow it into the room by the fan assembly.

[0120] Based on the national standard "Climate Season Division" (GB / T42074-2022) and based on meteorological observation data from 1991 to 2020, Beijing's four seasons are divided as follows: spring is defined as March 15 to May 15, summer as May 15 to September 7, autumn as September 7 to October 28, and winter as October 28 to March 15 of the following year.

[0121] The current season is determined based on the date or user settings. The system can automatically identify the season or allow the user to manually specify the season to enter the corresponding control mode. Specifically:

[0122] Summer Mode:

[0123] During the summer (May 15 to September 7), if the temperature exceeds 26°C and the indoor carbon dioxide concentration is below 1000 ppm, the system will enter the summer closed-window mode. Simultaneously, the power generation of the first and second photovoltaic panels, as well as the battery charge, will be continuously monitored to ensure a stable energy supply. If the temperature exceeds 26°C and the carbon dioxide concentration exceeds 1000 ppm, the system will enter the summer open-window mode. If the temperature is below 26°C, the system will enter the winter and spring / autumn open-window modes.

[0124] B Winter Mode:

[0125] During winter (October 28 to March 15 of the following year), if the temperature exceeds 18°C, the system will operate under the winter and spring / autumn window opening modes; if the temperature is below 18°C ​​and the indoor carbon dioxide concentration exceeds 1000 ppm, the system will operate under the winter and spring / autumn window opening modes; if the temperature is below 18°C ​​and the indoor carbon dioxide concentration is below 1000 ppm, the system will operate under the winter window closing mode.

[0126] During the day: The fourth sliding window is used to absorb and store solar heat.

[0127] At night: The fourth-floor sliding window is used to release the heat stored during the day to maintain indoor warmth;

[0128] C. Winter and Spring / Autumn Window Opening Mode

[0129] During spring, summer, and autumn (March 15 - October 28), if the temperature is below 26℃ but above 18℃, the system will operate in winter and spring / autumn window opening modes. During spring, summer, and autumn (March 15 - October 28), if the temperature exceeds 26℃, the system will operate in summer mode. During spring, summer, and autumn (March 15 - October 28), if the temperature is below 18℃, the system will operate in winter mode.

[0130] Of the four window opening and closing modes, only in the summer closed window mode is the air guide window closed to block solar radiation from entering the room through the window; in the other three modes, namely the summer open window mode, the winter closed window mode, the winter open window mode, and the spring and autumn open window mode, the air guide window is open; in the summer open window mode, the winter open window mode, and the spring and autumn open window mode, the air guide window is open to facilitate natural ventilation into the room; in the winter closed window mode, the air guide window is open to facilitate solar radiation into the room.

[0131] This invention utilizes multiple environmental sensors to monitor indoor and outdoor environmental parameters in real time, and an intelligent control system analyzes these parameters in real time to ensure that the energy-saving window operates in the optimal mode, thereby maximizing energy savings.

[0132] Step A: If the battery charge is below 20%, prioritize using the photovoltaic panels to generate electricity, ensuring that the system operation is not limited by the power grid; if the battery charge is above 80%, stop charging the photovoltaic panels to avoid overcharging and damaging the battery.

[0133] In summer window-opening mode, if the indoor temperature sensor detects that the indoor temperature exceeds 26°C, the cooling module will be activated to reduce the temperature of the natural air entering the room.

[0134] The present invention further includes an active ventilation module disposed at the lower part of the fixed window frame. The active ventilation module includes a fan group arranged side by side and an electric heating wire integrated with the fan. In summer window opening mode, if the first indoor temperature probe and the second outdoor temperature probe detect a temperature difference between indoor and outdoor ≥2℃ and the outdoor enthalpy value is calculated to be <65 kJ / kg by combining the first relative humidity probe and the second relative humidity probe, the fan group is turned on.

[0135] In winter window-closed mode, the air guide window is moved to the side without the fourth sliding window, so that the phase change heat storage material in the fourth sliding window is heated by solar radiation; if the first temperature probe detects that the indoor temperature is <18℃, the heating wire is activated to heat the airflow and blow it into the room by the fan group.

[0136] This invention utilizes an active ventilation module to improve indoor ventilation in summer. At the same time, an electric heating wire is integrated into the active ventilation module. In winter, the electric heating wire is activated to heat the airflow, which is then blown into the room by a fan assembly to increase the indoor temperature.

[0137] Furthermore, the bottom of the fixed window frame is provided with a box, on which a filter is installed on the outdoor side and an openable / closable baffle is installed on the indoor side; the fan assembly and the heating wire integrated with the fan are located inside the box. The filter on the air inlet side of the active ventilation module filters dust and impurities from the air, and the openable / closable baffle on the air outlet side prevents external dust or rainwater from entering the room when the active ventilation module is not in operation.

[0138] Furthermore, electric wheels are provided at the bottom of the air guide window, the bottom of the second photovoltaic panel, the bottom of the first sliding window, the bottom of the second sliding window, and the bottom of the third sliding window, and the electric wheels are electrically connected to the control system.

[0139] In summary, this invention achieves energy conservation and carbon emission reduction through various technical means, providing a multi-functional window that meets multiple needs such as ventilation, cooling, shading, power generation, and heat storage. It can be flexibly adjusted according to seasonal and climate changes, making it widely applicable. It reduces energy consumption and maintenance costs, offering economic advantages in the long run.

Claims

1. A control method for a photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window, characterized in that, Energy-saving windows include a fixed window frame and, from the outside in, a movably connected air guide window of the same size to the fixed window frame, a second photovoltaic panel, a first layer of sliding windows, a second layer of sliding windows, a third layer of sliding windows, and a fourth layer of sliding windows. The air guide window includes a window frame and several single panels that are rotatably connected side by side on the window frame. Each single panel is connected to the window frame through a rotation drive unit, and a first photovoltaic panel is integrated on the outer surface of each single panel. The first layer of sliding window has a first low-e film applied to the outer side of the window sash glass; The second-layer sliding window has a laminated glass pane filled with heat-insulating and cold-insulating material. The third sliding window has a second low-e film applied to the interior side of its glass sash. The fourth sliding window has a laminated glass sash filled with a phase change heat storage material. Summer window opening mode: The air guide window is located separately on one side of the fixed window frame and the single panel is in the open state. A cooling module is installed on the ventilation channel after the single panel is opened. The cooling module is used to reduce the temperature of the natural wind entering the room. The second photovoltaic panel and the fourth layer of sliding window are located on the other side of the fixed window frame. Summer window-closed mode: The air guide window, the first-layer sliding window, and the second-layer sliding window are all located on the same side of the fixed window frame. The single panel on the air guide window is closed, blocking solar radiation while using the first photovoltaic panel for photoelectric conversion; the first low-e film reflects heat outwards, and the second-layer sliding window uses cold and heat insulation materials for cold and heat insulation. The second photovoltaic panel, the third sliding window, and the fourth sliding window are all located on the other side of the fixed window frame. The second photovoltaic panel provides strong shading while performing photovoltaic conversion. Winter window-closed mode: The air guide window, the second photovoltaic panel, the first layer sliding window, and the second layer sliding window are all located on the same side of the fixed window frame, while the third layer sliding window and the fourth layer sliding window are located on the other side of the fixed window frame. The second low-e film on the inside of the third layer sliding window reflects indoor heat into the room; the phase change heat storage material in the fourth layer sliding window absorbs and stores solar radiation heat during the day and releases heat to keep warm at night. Winter and spring / autumn window opening modes: The air guide window, the second photovoltaic panel, and the fourth-layer sliding window are all located on the same side of the fixed window frame, while the other side of the fixed window frame is completely open for natural ventilation.

2. The control method for the photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window according to claim 1, characterized in that, The cold insulation and heat insulation material is an inert gas; The phase change heat storage material is a PEG phase change material with a molecular weight of 1000-1500, a phase change temperature of 25-40℃, and a latent heat value of ≥150 kJ / kg.

3. The control method for the photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window according to claim 1, characterized in that, The refrigeration module is an evaporative refrigeration module, comprising: Multiple absorbent felt blocks are disposed inside the air guide window, and a water conveying assembly is connected to the absorbent felt blocks. One absorbent felt block is disposed on the ventilation channel after every two single panels are opened.

4. The control method for photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window according to claim 3, characterized in that, The fixed window frame has a box at the bottom, and a first housing at the bottom of the box. An energy storage module is arranged in the first housing. The energy storage module is connected to the first photovoltaic panel and the second photovoltaic panel and is used to supply power to the rotary drive unit and the water conveying assembly. The water supply assembly includes a water tank housed within the first tank and a water pump housed within the water tank; The top of the fixed window frame is provided with a second box, in which a main water supply pipe and several branch water supply pipes connected to the main water supply pipe are arranged. The main water supply pipe is connected to the outlet of the water pump, and each water-absorbing felt block is connected to a branch water supply pipe. The width of the first box and the width of the second box are the same as the width of the fixed window frame.

5. The control method for the photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window according to claim 4, characterized in that, Also includes: A first temperature probe is installed indoors and a second temperature probe is installed outdoors; A first relative humidity probe is installed indoors and a second relative humidity probe is installed outdoors; A gas probe, installed indoors, is used to detect indoor carbon dioxide or total volatile organic compound concentrations; a solar radiometer is installed on the outer surface of the first-floor sliding window. Based on the national standard "Climate Season Division" (GB / T42074-2022), the current season is determined according to the date or user settings. The system automatically identifies the season or allows the user to manually specify it, thus entering the corresponding control mode. Specifically: Summer Mode: In summer, if the indoor temperature exceeds 26°C and the indoor carbon dioxide concentration is below 1000ppm, the system will enter summer closed window mode; at the same time, the power generation of the first and second photovoltaic panels and the battery power will be continuously monitored; if the indoor temperature exceeds 26°C and the indoor carbon dioxide concentration exceeds 1000ppm, the system will enter summer open window mode. B Winter Mode: In winter, when the indoor temperature exceeds 18℃ or when the indoor temperature is below 18℃ and the indoor carbon dioxide concentration exceeds 1000ppm, the system will switch to winter window opening mode and spring / autumn window opening mode; if the indoor temperature is below 18℃ and the indoor carbon dioxide concentration is below 1000ppm, the system will switch to winter window closing mode. C. Spring, Summer, and Autumn Patterns: In spring, summer, and autumn, when the indoor temperature is between 18°C ​​and 26°C, it enters the winter and spring / autumn window opening modes; when the indoor temperature exceeds 26°C, it operates according to the summer mode; when the indoor temperature is below 18°C, it operates according to the winter mode.

6. The control method for the photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window according to claim 5, characterized in that, In step A, if the battery charge is below 20%, the first photovoltaic panel and / or the second photovoltaic panel are used for charging first to ensure that the system operation is not limited by the power grid. If the battery charge is above 80%, stop charging the first and / or second photovoltaic panels to avoid overcharging and damaging the battery.

7. The control method for the photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window according to claim 5, characterized in that, In summer window-opening mode, if the indoor temperature sensor detects that the indoor temperature exceeds 26°C, the cooling module will be activated to reduce the temperature of the natural air entering the room.

8. The control method for the photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window according to claim 5, characterized in that, It also includes an active ventilation module located at the bottom of the fixed window frame. The active ventilation module includes a fan group arranged side by side and an electric heating wire integrated with the fan. In summer window-opening mode, if the indoor first temperature probe and the outdoor second temperature probe detect a temperature difference of ≥2℃ between indoor and outdoor, and the outdoor enthalpy value is calculated to be <65 kJ / kg based on the first and second relative humidity probes, the fan group will be turned on. In winter with the windows closed, if the first temperature probe detects an indoor temperature of <18℃, the heating wire will be activated to heat the airflow, which will then be blown into the room by the fan assembly.

9. The control method for the photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window according to claim 8, characterized in that, A box is provided between the bottom of the fixed window frame and the first box body. A filter screen is provided on the outdoor side of the box body, and an openable and closable baffle is provided on the indoor side. The fan assembly and the heating wire integrated with the fan are located inside the box body.

10. The control method for the photovoltaic energy storage evaporative cooling and PEG thermal storage intelligent energy-saving window according to claim 5, characterized in that, Electric wheels are provided at the bottom of the air guide window, the bottom of the second photovoltaic panel, the bottom of the first sliding window, the bottom of the second sliding window, and the bottom of the third sliding window.

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