CN219735580U - Double-layer glass curtain wall BIPV/T-DSF system for increasing fresh air area - Google Patents

Abstract

The utility model relates to a double-layer glass curtain wall BIPV/T-DSF system for increasing a fresh air area, which utilizes a photovoltaic photo-thermal technology to absorb waste heat of a photovoltaic panel, improves the power generation efficiency of the photovoltaic cell and utilizes the waste heat to heat and recycle indoor air. The system consists of double-layer glass curtain walls, air channels, shutters and fans. The shutter and the baffle are arranged on the wall body, the PV component 1 is arranged in the middle of the wall body, the three components form an outer wall of the building, the outer wall, the inner wall, the roof and the ground form an air channel 4, and in winter, the photovoltaic panel arranged on the enclosure structure heats the air of the inner circulation and then sends the air to the room when receiving solar energy for photovoltaic power generation, so that the air of the outer circulation is formed, and the indoor low-temperature air is heated and washes the inner surface of the photovoltaic panel at the same time, so that the photoelectric conversion efficiency of the photovoltaic panel is improved. Meanwhile, the louver window is opened at regular time by the enclosure structure at the other side, fresh air is fed into the room after being heated, so that the problem of low indoor air quality in winter under the common condition is solved, and the comfort and the livability of the building are improved.

Description

A double-glazed curtain wall BIPV/T-DSF system to increase the fresh air area

Technical field

The utility model belongs to the field of new energy and involves photovoltaic photothermal (PV/T) building integration technology. It is especially suitable for double-layer glass curtain wall BIPV/T-DSF systems in single-family villa areas to increase fresh air areas.

Background technique

Most of the solar radiation energy received by the surface of the photovoltaic module is converted into the internal energy of the battery, making the energy actually converted into electrical energy very low. As the internal energy of the battery increases, the temperature of the photovoltaic cell gradually increases, the photoelectric conversion efficiency gradually decreases, and the battery life is affected.

Therefore, the recycling of photovoltaic waste heat has become crucial. To solve this problem, the concept of photovoltaic photothermal system was proposed, which combines photovoltaic cells with solar collectors to cool the photovoltaic cells while effectively utilizing excess heat to improve the system. overall efficiency. Directly integrate photovoltaic and photothermal systems into the building envelope to form photovoltaic and photothermal building integration

(BIPV/T) technology, making full use of solar energy to serve building operations.

Based on this, BIPV/T-DSF is proposed. Based on the integration of photovoltaic and photothermal buildings, it isolates the temperature rise area from the fresh air area, adds fresh air flow channels, and increases the indoor temperature at the same time. Ensure indoor air quality and improve the livability of the room.

Contents of the invention

This utility model is dedicated to the research of photovoltaic and photothermal building integrated systems with fresh air systems. A double-glazed curtain wall BIPV/T-DSF system that increases the fresh air area is proposed. In order to solve the problem of generally reduced indoor air quality in winter in existing photovoltaic and thermal building integration, the fresh air system is innovatively added to the building envelope to achieve the trinity of heat recovery, solar energy utilization, and indoor cleaning.

The solution adopted by this utility model to solve the technical problem is:

A double-glazed curtain wall BIPV/T-DSF system that increases the fresh air area. Interior and exterior walls are set up on the building's walls. Photovoltaic glass modules are installed on the exterior walls. The wall part of the south exterior wall of the building is made of traditional The reinforced concrete is changed to a composite wall composed of PV wall, shutters and concrete. The wall includes PV components 1, shutters and baffles 7. A glass curtain wall is installed on the interior wall 9, which is characterized by: the installation of shutters and baffles 7 On the wall, PV module 1 is installed in the middle of the wall. The three form the exterior wall of the building, which together with the interior wall, ceiling and ground form an air channel 4. The louvers are divided into upper louvers 2, lower louvers 3, and upper louvers 2 , the lower louvers 3 are placed on the upper and lower parts of the wall respectively, and the inner wall is provided with upper and lower vents 5 and 6 respectively. The left area of the baffle 7 is the heating side, and the circulated air is indoor heat recovery air. Baffle 7 right area

The area is the fresh air side, and the circulated air is the fresh air introduced from the outside. In winter, the indoor air enters the air channel from the lower vent 6 under the inner wall. After circulation, when the air channel temperature is higher than the indoor temperature or the air channel temperature reaches a certain Once the value is determined, the system automatically opens the upper vent 5, and the fan connected to the upper vent assists in sending the air into the room to participate in the indoor heat cycle. The external blinds on the right side of the fresh air side of the baffle 7 are regularly opened to introduce outside air to the right side. The air channel uses the heat energy stored in the air channel and the heat generated by subsequent PV components to heat the outside air. After reaching the temperature requirement, it is sent into the room through the upper vent 5 with the help of a fan to participate in the indoor heat cycle. In summer, The upper and lower air channels on the inner wall are closed. Due to the "chimney effect", the air in the channel generates flowing airflow, which circulates with the outside air, taking away the heat in the channel and reducing the temperature of the outer wall. In summer, the opening method of the blinds on the fresh air side and heating side, ventilation The outlet status and air circulation status are the same. At the same time, the fresh air side uses a fan to assist air intake. The baffle between the heating side and the fresh air side is a solid wall.

The optimal air channel size is 30-70cm. The volume of the fresh air side needs to be adjusted according to the area where the building is located. A temperature control valve is installed on the upper vent of the system. The upper shutters on the exterior wall are equipped with electric controls.

The advantage of this utility model is that it uses photovoltaic photothermal technology to absorb waste heat from photovoltaic panels, improves the power generation efficiency of photovoltaic cells, and uses waste heat to heat and recycle indoor air. The system consists of double-glazed curtain walls, air channels, blinds, fans, and air ducts. In winter, through the photovoltaic panels installed on the building envelope, after receiving solar energy, the photovoltaic power generation is heated and then sent indoors to form an external circulation of air. While the indoor low-temperature air is heated, the photovoltaic energy is washed away. The inner surface of the panel can reduce the temperature of the photovoltaic cell to improve the photoelectric conversion efficiency of the photovoltaic panel. At the same time, the shutters of the other side of the enclosure structure are opened regularly, and the fresh air is heated and sent indoors to improve the common problem of low indoor air quality in winter, reduce the required indoor cooling load, and reduce the energy consumption of air conditioning in the room in summer. Reduce indoor pollutant concentration and improve building comfort and livability.

Description of the drawings

Figure 1 is a schematic diagram of the system of the present utility model.

Figure 2 is a top view of the building model of the present utility model.

Figure 3 is the winter heating side air operation strategy of the present invention.

Figure 4 is the winter fresh air side air operation strategy of the present invention.

Figure 5 is the summer air operation strategy of the present invention.

In the figure, 1 is the PV module, 2 is the upper louver, 3 is the lower louver, 4 is the air channel, 5 is the upper side vent, 6 is the lower side vent, 7 is the baffle, which is a solid wall. ; 8 is the inner wall, 9 is the inner wall.

Implementation

Set up interior and exterior walls on the walls of the building, install photovoltaic glass components on the exterior walls, and change the wall part of the south exterior wall of the building from traditional reinforced concrete to a composite wall composed of PV walls, shutters, and concrete. The wall includes PV module 1, blinds and baffles 7, and a glass curtain wall is installed on the inner wall 9. It is characterized in that: the blinds and baffles 7 are installed on the wall, and the PV module 1 is installed in the middle of the wall. The three components The exterior wall of the building forms an air channel 4 with the interior wall, roof and ground. The shutters are divided into upper shutters 2 and lower shutters 3. The upper shutters 2 and lower shutters 3 are placed on the upper and lower parts of the wall respectively, and the inner walls are opened respectively. There are upper vents 5 and lower vents 6 and baffles 7. The left area is the heating side and circulates air.

The air is the indoor heat recovered air, the area on the right side of the baffle 7 is the fresh air side, and the circulated air is the fresh air introduced from the outside.

The fan is installed and connected at the upper and lower side vents. It is turned on during the ventilation period to assist the air inlet. The thermostat is installed under the upper vent on the interior wall to monitor the inlet air temperature. The control system detects that the temperature meets the requirements and turns on the fan. Provide air supply. The installation and connection of fans and thermostats are common installation methods in the existing technology. Ordinary technicians can achieve this. Double-layer glass curtain wall consists of three parts: frame, glass and accessories. Fix the aluminum alloy frame, then install the glass directly on the frame, and add a sealing strip. Pay attention to protecting the oxide film of the aluminum alloy frame, especially where it is in contact with concrete, anti-corrosion treatment should be added to the oxide film to prevent alkaline concrete from damaging the aluminum. corrosion.

In winter, the temperature of the PV module is monitored in real time. The low-temperature air circulating indoors enters the air channel through the lower vent and is heated by the heat generated by the photovoltaic module. After the heated air temperature is higher than the indoor temperature or reaches the required value, it is passed through Due to the chimney effect, hot air circulates to the upper part of the channel. With the assistance of a fan, the heated air is sent indoors to ensure indoor temperature balance and meet the human body's demand for indoor temperature in winter.

At the same time, the louvers on the upper side of the fresh air side are opened to introduce fresh air into the air channel. After heating, the heated fresh air is sent indoors to improve indoor air quality, reduce indoor pollutant concentration, and improve room comfort.

In summer, the external louvers on both sides are all opened, allowing the outside air to circulate with the air in the channel, washing the surface of the PV module, convection heat exchange with the surface of the PV module, taking away the heat from the surface of the module, reducing the temperature of the module, and improving the power generation efficiency. At the same time, the outer surface of the exterior wall is scoured, the temperature of the fluid outside the building envelope is reduced, the cooling load of the building in summer is reduced, and the energy consumption of air conditioning in summer is reduced.

In summer, the fresh air side passes through the fan to increase indoor mechanical ventilation, lower the indoor temperature, improve indoor air quality, and improve the phenomenon of increased indoor humidity caused by air conditioning refrigeration.

Claims (5)

1. Double glazing curtain BIPV/T-DSF system in new trend district increases sets up interior wall and outer wall on the wall body of building, installs photovoltaic glass subassembly on the outer wall, changes the wall body part of building south outer wall by traditional reinforced concrete into by the composite wall that PV wall body, shutter, concrete are constituteed, and the wall body includes PV subassembly (1), shutter, baffle (7), installs glass curtain on interior wall (9), its characterized in that: the shutter, baffle (7) are installed on the wall body, PV module (1) is installed at the wall body middle part, the three constitutes building outer wall, it constitutes air passage (4) with interior wall, canopy top and ground, the shutter divide into upper portion shutter (2), lower part shutter (3), upper portion shutter (2), lower part shutter (3) are placed respectively on wall body upper portion and lower part, open respectively in the interior wall has upside vent (5) and downside vent (6), baffle (7) left side region is the air of heating side, circulated air is indoor heat recovery, baffle (7) right side region is the new trend side, circulated air is the new trend of external introduction, the new trend side is through fan auxiliary air inlet.

2. The double glazing curtain wall BIPV/T-DSF system for increasing fresh air area of claim 1, wherein: the baffle plate in the middle of the heating side and the fresh air side is a solid wall body.

3. The double glazing curtain wall BIPV/T-DSF system for increasing fresh air area of claim 1, wherein: the size of the air channel is 30-70cm.

4. The double glazing curtain wall BIPV/T-DSF system for increasing fresh air area of claim 1, wherein: and a temperature control valve is arranged at a vent hole at the upper side of the system.

5. The double glazing curtain wall BIPV/T-DSF system for increasing fresh air area of claim 1, wherein: the shutter on the upper part of the outer wall is provided with an electric control device.