Photovoltaic heat treatment system

Abstract

The utility model discloses a photovoltaic heat treatment system which comprises a photovoltaic curtain wall installed outside a building wall, the photovoltaic curtain wall and the outside of the building wall form a cavity, a first channel is arranged in the cavity, an air inlet is formed in one end of the first channel, and the other end of the first channel is connected with the inlet end of a draught fan; the outlet end of the fan is connected with the second channel and the third channel, an air outlet is formed in the end of the second channel, and the third channel is connected with the heat exchange device. A temperature sensor is arranged in the first channel and is in communication connection with the fan, and the fan receives a temperature signal transmitted by the temperature sensor and transmits gas in the first channel to the air outlet through the second channel or transmits the gas to the heat exchange device through the third channel. The regulation and control accuracy of the photovoltaic heat treatment system can be improved, effective utilization of photovoltaic waste heat is achieved, and energy consumption of the heat exchange body is reduced.

Description

Technical Field

[0001] This application relates to the field of photovoltaic power generation technology, and in particular to a photovoltaic heat treatment system. Background Technology

[0002] Currently, Building Integrated Photovoltaics (BIPV) is an innovative technology designed to seamlessly integrate photovoltaic products into building structures.

[0003] However, in the actual operation of BIPV systems, photovoltaic modules face a significant challenge: temperature control. While receiving solar radiation and generating electricity, a large portion of the solar energy (approximately 75%) is converted into heat instead of electricity, leading to increased module temperature. This temperature rise not only reduces the photovoltaic conversion efficiency of the modules but also increases the cooling load on building interiors during summer, thus impacting the building's energy efficiency and comfort.

[0004] Therefore, there is an urgent need for a system to reduce the temperature of photovoltaic modules and improve the efficiency of photovoltaic power generation. Utility Model Content

[0005] This application provides a photovoltaic thermal treatment system to solve the above-mentioned technical problems.

[0006] According to some embodiments, this application provides a photovoltaic thermal treatment system, including: a photovoltaic curtain wall installed on the exterior of a building wall, the photovoltaic curtain wall forming a cavity with the exterior of the building wall, a first channel being provided in the cavity, one end of the first channel being provided with an air inlet, and the other end of the first channel being connected to the inlet end of a fan;

[0007] The outlet end of the fan is connected to the second channel and the third channel respectively. The end of the second channel is provided with an air outlet, and the third channel is connected to a heat exchange device.

[0008] A temperature sensor is installed in the first channel. The temperature sensor is communicatively connected to the fan. The fan receives the temperature signal transmitted by the temperature sensor and transmits the gas in the first channel to the air outlet through the second channel, or to the heat exchange device through the third channel.

[0009] Preferably, a second control valve is provided in the second channel to control the connection or disconnection of the outlet end of the fan with the second channel;

[0010] The third channel is equipped with a third control valve, which is used to control the connection or disconnection of the outlet end of the fan with the third channel.

[0011] Preferably, the heat exchange device includes: an insulated box and a heat exchanger;

[0012] One wall of the insulated box is connected to the third channel, and the heat exchanger is disposed inside the insulated box.

[0013] Preferably, motorized louvers are provided on at least one wall of the insulated box.

[0014] Preferably, the insulated box includes a first box surface and a second box surface that are disposed opposite to each other on both sides of the third channel, and the electric louvers are respectively disposed on the first box surface and the second box surface.

[0015] Preferably, the insulated box includes: a steel frame and multiple insulation panels;

[0016] The steel frame is a cubic structure, and the multiple insulation boards are sequentially connected and attached to the steel frame and sandwiched between the first box surface and the second box surface.

[0017] Preferably, a medium inlet is provided on the third box surface of the insulated box, and the medium inlet is connected to the third channel; a medium outlet is provided on the fourth box surface opposite to the third box surface.

[0018] Preferably, the temperature sensors are multiple and spaced apart along the height direction of the first channel.

[0019] Preferably, the fan is a variable frequency fan.

[0020] Preferably, the heat exchanger is one of the following: a split air conditioner outdoor unit, an air source heat pump outdoor unit, an air source heat pump water heater outdoor unit, or a multi-split air conditioner outdoor unit.

[0021] The photovoltaic thermal treatment system provided in this application employs a combination of direct discharge of the medium and recovery of the medium through a heat exchange device. Direct discharge enables rapid cooling of the photovoltaic curtain wall, reducing the surface temperature of the photovoltaic modules and improving power generation efficiency. The heat exchange device recovers and utilizes waste photovoltaic heat, increasing the utilization rate of photovoltaic thermal energy. Furthermore, temperature sensors and fans control and drive the switching between direct discharge and heat exchange recovery methods. This improves the precision of the photovoltaic thermal treatment system's control, achieves effective utilization of photovoltaic waste heat, and reduces the energy consumption of the heat exchanger. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or in the conventional technology, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is an overall schematic diagram of a photovoltaic thermal treatment system provided in an embodiment of this application;

[0024] Figure 2 This is one of the partial schematic diagrams of a photovoltaic thermal treatment system provided in an embodiment of this application;

[0025] Figure 3 This is a second partial schematic diagram of a photovoltaic heat treatment system provided in an embodiment of this application;

[0026] Figure 4 This is a third partial schematic diagram of a photovoltaic thermal treatment system provided in an embodiment of this application.

[0027] Reference numerals: Photovoltaic curtain wall 1; First channel 2; Air inlet 21; Fan 3; Inlet end 31; Outlet end 32; Second channel 4; Second control valve 41; Air outlet 42; Third channel 5; Third control valve 51; Heat exchange device 6; Insulation box 61; Electric louvers 62; Heat exchanger 63; Steel frame 64; Insulation board 65; First box surface 611; Second box surface 612; Third box surface 613; Fourth box surface 614; Medium inlet 300; Medium outlet 400; Temperature sensor 7. Detailed Implementation

[0028] The technical solution of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication of two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0029] The following describes in further detail a photovoltaic thermal treatment system provided in this embodiment with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0030] Please refer to Figure 1 A photovoltaic thermal treatment system includes a photovoltaic curtain wall 1 installed on the exterior of a building wall, forming a cavity with the exterior of the building wall. A first channel 2 is provided in the cavity, with an air inlet 21 at one end and the other end of the first channel 2 connected to the inlet end 31 of a fan 3. The outlet end 32 of the fan 3 is connected to a second channel 4 and a third channel 5, respectively. An air outlet 42 is provided at the end of the second channel 4, and the third channel 5 is connected to a heat exchange device 6. A temperature sensor 7 is provided in the first channel 2 and is communicatively connected to the fan 3. The fan 3 receives the temperature signal transmitted by the temperature sensor 7 and transmits the gas in the first channel 2 to the air outlet 42 through the second channel 4, or to the heat exchange device 6 through the third channel 5.

[0031] Specifically, such as Figure 1 As shown, to address the shortcomings or deficiencies of existing technologies, this embodiment provides a photovoltaic thermal treatment system. This system enables rapid cooling of the photovoltaic curtain wall while utilizing waste heat from photovoltaic power generation, thus improving the utilization rate of photovoltaic thermal energy while ensuring the efficiency of photovoltaic power generation. The photovoltaic curtain wall 1 is installed on a building, forming a cavity between it and the building, allowing air to enter the cavity. It should be noted that the building can be an office building, cinema, stadium, shopping mall, hotel, factory, or residence, etc., and can be a regular cuboid, spherical, cylindrical, or other irregularly shaped building; no specific limitation is made here. A first channel 2 is provided within the cavity, with an air inlet 21 at one end. Outside air can enter the first channel 2 within the cavity through the air inlet 21. The first channel 2 contains a medium.

[0032] The other end of the first channel 2 is connected to the inlet end 31 of the fan 3. The fan 3 is used to drive the flow of the medium within the channel. The outlet end 32 of the fan 3 is connected to the second channel 4 and the third channel 5 respectively. The second channel 4 is a direct discharge channel for discharging the medium. The end of the second channel 4 is provided with an air outlet 42 for discharging the medium. The third channel 5 is connected to the heat exchange device 6, which is used to absorb the heat of the medium to realize the utilization of thermal energy. It can be understood that there is a channel in the cavity that can discharge the internal medium, namely the first channel 2. The first channel 2 has two outlet ends. One is the direct discharge channel for the medium, namely the second channel 4, through which the medium is discharged into the outside air, for the purpose of heat dissipation treatment of the inner cavity and the photovoltaic curtain wall 1. The other is the third channel 5, through which the medium enters the heat exchange device 6 and can exchange heat with the internal components of the heat exchange device 6, thus enabling the recovery and utilization of the heat in the medium. In addition, the driving force for the flow of the medium can be driven by the fan 3.

[0033] A temperature sensor 7 is installed in the first channel 2 to detect the temperature of the medium inside the first channel 2. The temperature sensor 7 is communicatively connected to the fan 3. The fan 3 receives the temperature signal transmitted by the temperature sensor 7 and transmits the gas in the first channel 2 through the second channel 4 to the air outlet 42, or through the third channel 5 to the heat exchange device 6. For example, when the temperature detected by the temperature sensor 7 reaches the first preset temperature, the fan 3 starts and connects the outlet end 32 to the second channel 4, allowing the medium to be directly discharged through the air outlet 42. When the temperature detected by the temperature sensor 7 reaches the second preset temperature, the fan 3 starts and connects the outlet end 32 to the third channel 5, allowing the medium to flow into the heat exchange device 6 through the third channel 5 to achieve heat recovery.

[0034] This can be understood as follows: within the photovoltaic thermal treatment system of a building, there can be a controller. This controller can receive the temperature signal emitted by the temperature sensor 7 and control the start / stop or operating frequency of the fan 3 based on the temperature signal. The controller is set with a first preset temperature and a second preset temperature. Correspondingly, the fan 3 can have a first operating state and a second operating state. Specifically, when the temperature sensor 7 detects the medium temperature, it transmits the medium temperature signal to the controller. The controller identifies the real-time temperature and compares it with the first and second preset temperatures. If the temperature reaches the first preset temperature, the variable frequency fan 1 starts the first operating state. At this time, the fan 3 starts and connects the outlet end 32 to the second channel 4, allowing the medium to be directly discharged through the outlet 42 for rapid heat dissipation. If the temperature reaches the second preset temperature and the heat exchanger 63 is working, the fan 3 starts the second operating state. At this time, the outlet end 32 is connected to the third channel 5, allowing the medium to flow into the heat exchange device 6 through the third channel 5, realizing heat exchange and thermal energy utilization.

[0035] Optionally, the photovoltaic curtain wall 1 can be composed of multiple photovoltaic panels spliced ​​together. The photovoltaic panels can be installed on the building using brackets, which is convenient and provides good stability. The photovoltaic curtain wall 1 generates electricity without fuel, produces no waste gas, waste residue, or noise pollution, making it an excellent device for converting solar energy into electrical energy.

[0036] Optionally, the first channel 2 can be located on the exterior of the building, such as on the roof or in other locations where the photovoltaic curtain wall 1 is not installed. This reduces the need for building exterior walls and increases their utilization rate, while avoiding the occupation of interior space. The first channel 2 can be a tubular structure, which is simple and easy to manufacture. The shape and length of the first channel 2 can be adjusted according to the specific building conditions, and no specific limitations are made here.

[0037] Optionally, an air vent can be formed on the photovoltaic curtain wall 1. When the medium flows in the first channel 2, the medium can be quickly replenished into the first channel 2 through the air vent. The air vent can be located at the part of the building with the strongest solar radiation, so as to avoid local overheating.

[0038] The photovoltaic thermal treatment system provided in this application employs a combination of direct discharge of the medium and recovery of the medium through a heat exchange device. Direct discharge enables rapid cooling of the photovoltaic curtain wall, reducing the surface temperature of the photovoltaic modules and improving power generation efficiency. The heat exchange device recovers and utilizes waste photovoltaic heat, increasing the utilization rate of photovoltaic thermal energy. Furthermore, temperature sensors and fans control and drive the switching between direct discharge and heat exchange recovery methods. This improves the precision of the photovoltaic thermal treatment system's control, achieves effective utilization of photovoltaic waste heat, and reduces the energy consumption of the heat exchanger.

[0039] In one optional embodiment, a second control valve 41 is provided in the second channel 4 for controlling the connection or disconnection of the outlet end 32 of the fan 3 with the second channel 4; a third control valve 51 is provided in the third channel 5 for controlling the connection or disconnection of the outlet end 32 of the fan 3 with the third channel 5.

[0040] Specifically, such as Figure 1 As shown, the second control valve 41 is disposed on the second channel 4 to control the opening and closing of the second channel 4; the third control valve 51 is disposed on the third channel 5 and located between the second channel 4 and the heat exchange device 6, and is used to control the opening and closing of the heat exchange device 6. Figure 1 As shown, it can be understood that, in order to ensure the independence of the second channel 4 and the third channel 5, the independent opening and closing of the two can be controlled by the second control valve 41 and the third control valve 51.

[0041] In one embodiment, the second channel 4 is sandwiched between the fan 3 and the heat exchange device 6. For example... Figure 1 As shown, this can be understood as follows: in the direction of medium flow, the fan 3 is located upstream of the second channel 4, and the second channel 4 is located upstream of the heat exchange device 6. In this way, the fan 3 can simultaneously control the second channel 4 and the heat exchange device 6, and the power required by the fan 3 for the second channel 4 can be reduced, thus reducing energy consumption.

[0042] In one optional embodiment, the heat exchange device 6 includes: an insulated box 61 and a heat exchanger 63; one wall of the insulated box 61 is connected to the third channel 5, and the heat exchanger 63 is disposed inside the insulated box 61.

[0043] Specifically, such as Figure 1 As shown, and in combination Figure 2 The heat exchange device 6 includes an insulated housing 61, which is installed on the building and connected to the third channel 5. The insulated housing 61 houses the heat exchanger 63, which is used for heat exchange. Essentially, the heat exchanger 63 is installed inside the insulated housing 61. Because the insulated housing 61 is connected to the third channel 5, the heat-carrying medium flowing out of the third channel 5 can enter the insulated housing 61. Once inside the insulated housing 61, the heat-carrying medium surrounds and contacts the heat exchanger 63, allowing for thorough heat exchange and achieving heat recovery.

[0044] In one alternative embodiment, at least one wall of the insulated box 61 is provided with an electric louver 62.

[0045] Specifically, such as Figure 1 As shown, and in combination Figure 2 , Figure 3 , Figure 4 The electric louvers 62 are closable and can be installed on at least one wall of the insulation box 61. On the one hand, the medium with a certain amount of heat flowing out of the third channel 5 can be discharged into the insulation box 61. After entering the insulation box 61, the hot medium will surround the heat exchanger 63 and come into contact with the heat exchanger 63, and the hot medium and the heat exchanger 63 will have sufficient heat exchange, realizing the recovery and utilization of heat. On the other hand, when cooling is required or the temperature of the medium in the cavity 2 does not meet the operating requirements of the heat exchanger 63, the electric louvers 62 can introduce air from outside the insulation box 61 into the insulation box 61 to ensure the stable operation of the heat exchange device 6.

[0046] In one optional embodiment, the insulated box 61 includes a first box surface 611 and a second box surface 612 that are disposed opposite to each other on both sides of the third channel 5, and electric louvers 62 are respectively disposed on the first box surface 611 and the second box surface 612.

[0047] Specifically, such as Figure 1 As shown, and in combination Figure 2, Figure 3 , Figure 4 The insulated box 61 includes a first box surface 611 and a second box surface 612 that are opposite to each other and located on both sides of the third channel 5. Multiple motorized louvers 62 are disposed on the first box surface 611 and the second box surface 612. It can be understood that the insulated box 61 can have six surfaces, with the bottom surface mounted on the building, the top surface opposite to the bottom surface, and four surfaces surrounding the bottom and top surfaces. One of these surfaces connects to the third channel 5. The first box surface 611 and the second box surface 612 are disposed on both sides of the third channel 5, and the motorized louvers 62 are disposed on the first box surface 611 and the second box surface 612.

[0048] In one optional embodiment, the insulated box 61 includes: a steel frame 64 and a plurality of insulation boards 65; the steel frame 64 has a cubic structure, and the plurality of insulation boards 65 are sequentially connected and attached to the steel frame 64 and sandwiched between the first box surface 611 and the second box surface 612.

[0049] Specifically, such as Figure 2 As shown, and in combination Figure 3 , Figure 4 Regarding the specific structure of the insulated box 61, the insulated box 61 includes a steel frame 64, forming a first box surface 611 and a second box surface 612; and multiple insulated steel plates 65, which are sequentially and interconnectedly attached to the steel frame 64 and sandwiched between the first box surface 611 and the second box surface 612. It can be understood that the insulated box 61 includes two parts: a frame and insulation material. The steel frame 64 forms the box structure of the insulated box 61 and provides support. The insulated steel plates 65 enclose the steel frame 64 and provide insulation. Thus, the insulated box 61 has good stability and insulation properties.

[0050] In one optional embodiment, a medium inlet 300 is provided on the third box surface 613 of the insulated box 61, and the medium inlet 300 is connected to the third channel 5; a medium outlet 400 is provided on the fourth box surface 614 opposite to the third box surface 613.

[0051] Specifically, such as Figure 2 As shown, and in combination Figure 3 , Figure 4 The insulation box 61 may have six sides, with the bottom side installed on the building, the top side facing the bottom side, and four sides surrounding the bottom and top sides. One of the sides has a medium inlet 300 for connecting to the third channel 5. The side opposite to the medium inlet 300 can be used to open a medium outlet 400. The medium outlet 400 enables the insulation box 61 to communicate with the outside world, so as to facilitate the discharge of the medium inside the insulation box 61 to the outside.

[0052] In one alternative implementation, there are multiple temperature sensors 7 distributed at intervals along the height direction of the first channel 2.

[0053] Specifically, such as Figure 1 As shown, since the temperature varies at different heights within the first channel 2, in one embodiment, multiple temperature sensors 7 are distributed at intervals along the height direction of the first channel 2. This means that the temperature sensors 7 can detect the real-time temperature at different heights within the first channel 2. When a local temperature becomes overheated, the fan 3 can be activated to prevent localized overheating of the first channel 2 or the photovoltaic curtain wall 1, ensuring the stable operation of the photovoltaic curtain wall 1.

[0054] In one alternative implementation, the fan 3 is a variable frequency fan.

[0055] Specifically, the variable frequency fan is equipped with a frequency converter and adopts a variable frequency speed control device. By changing the fan speed, the fan air volume is changed. In this way, the fan air volume can be adjusted as needed, and energy consumption can be reduced, resulting in high overall efficiency.

[0056] In one optional embodiment, the heat exchanger 63 is one of a split air conditioner outdoor unit, an air source heat pump outdoor unit, an air source heat pump water heater outdoor unit, or a multi-split air conditioner outdoor unit.

[0057] Specifically, the heat exchanger 63 is an outdoor unit of a multi-split air conditioning unit, an outdoor unit of a room air conditioner, or an outdoor unit of an air source heat pump water heater (hereinafter referred to as an air conditioning outdoor unit), such as... Figure 2 As shown. In one embodiment, the outdoor unit of the air conditioner is installed on the roof of a building. In heating mode, the heat medium entering the insulation box 61 serves as the air intake for the outdoor unit. After heat exchange with the evaporator of the outdoor unit, the medium's temperature decreases and it exits the insulation box 61 through the medium discharge channel 400. Furthermore, when the outdoor unit is in cooling mode, to ensure the heat exchange effect, the electric louvers 62 can be opened, allowing outdoor ambient air to enter the insulation box 61. After heat exchange, the air exits the insulation box 61 through the medium discharge port 400, maintaining the normal operation of the outdoor unit.

[0058] In one embodiment, the second preset temperature is greater than the first preset temperature. This can be understood as, for example, the first preset temperature being 18 degrees Celsius and the second preset temperature being 20 degrees Celsius. Of course, the preset temperature can be other temperatures; this is merely an example.

[0059] Specifically, in one scenario, during winter solar radiation, the temperature of the photovoltaic curtain wall 1 rises, causing the temperature of the medium inside the cavity to rise. However, the temperature sensor 7 detects a temperature below 18 degrees Celsius. At this time, the variable frequency fan 3 does not start, and the first channel 2 is sealed, reducing the heat load.

[0060] In one scenario, during the summer or transitional season when there is solar radiation during the day, the temperature of the photovoltaic curtain wall 1 rises, causing the temperature of the medium inside the cavity to rise as well. When the temperature sensor 7 detects that the medium temperature reaches 18 degrees Celsius, there is no demand for hot water or air conditioning heating. In order to prevent the medium temperature inside the photovoltaic cavity from becoming too high and affecting the stable operation of the photovoltaic curtain wall 1, the variable frequency fan 3 starts, and the medium in the first channel 2 can be discharged along the medium direct discharge channel, i.e., the second channel 4, thereby quickly reducing the temperature of the photovoltaic curtain wall 1 and ensuring the power generation efficiency of the photovoltaic curtain wall 1.

[0061] In another scenario, when there is a demand for hot water or for air conditioning heating in winter, the temperature of the photovoltaic curtain wall 1 rises due to solar radiation, causing the temperature of the medium inside the photovoltaic cavity to rise. When the temperature sensor 7 detects that the medium temperature reaches 20 degrees Celsius, the variable frequency fan 3 starts, and the medium in the first channel 2 can enter the heat exchange device 6 and exchange heat with the heat exchanger 63, thereby realizing the utilization rate of photovoltaic thermal energy, improving the performance coefficient of the heat exchanger 63, and reducing the energy consumption of the heat exchanger 63.

[0062] In addition, when the temperature inside the photovoltaic cavity does not reach 20 degrees Celsius and the heat exchanger 63 is running, the electric louvers 62 can be opened so that outside air can enter the insulation box 61 to meet the operating needs of the heat exchanger 63.

[0063] The photovoltaic thermal treatment system provided in this application employs a combination of direct discharge of the medium and recovery of the medium through a heat exchange device. Direct discharge enables rapid cooling of the photovoltaic curtain wall, reducing the surface temperature of the photovoltaic modules and improving power generation efficiency. The heat exchange device recovers and utilizes waste photovoltaic heat, increasing the utilization rate of photovoltaic thermal energy. Furthermore, temperature sensors and fans control and drive the switching between direct discharge and heat exchange recovery methods. This improves the precision of the photovoltaic thermal treatment system's control, achieves effective utilization of photovoltaic waste heat, and reduces the energy consumption of the heat exchanger.

[0064] In addition, this application also provides a BIPV building, including the aforementioned photovoltaic thermal treatment system, such as... Figure 1 As shown, this photovoltaic thermal treatment system can be located on the exterior of a building. The photovoltaic curtain wall 1 converts light energy into electrical energy, and dissipates or exchanges heat absorbed by the medium inside the cavity. This allows for rapid cooling of the photovoltaic curtain wall to ensure the efficiency of photovoltaic module power generation, while also improving the utilization rate of photovoltaic thermal energy.

[0065] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this application and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this application should be included within the protection scope of this application. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A photovoltaic thermal treatment system, comprising a photovoltaic curtain wall installed on the exterior of a building wall, characterized in that, The photovoltaic curtain wall forms a cavity with the exterior of the building wall. A first channel is provided in the cavity. One end of the first channel is provided with an air inlet, and the other end of the first channel is connected to the inlet of the fan. The outlet end of the fan is connected to the second channel and the third channel respectively. The end of the second channel is provided with an air outlet, and the third channel is connected to a heat exchange device. A temperature sensor is installed in the first channel. The temperature sensor is communicatively connected to the fan. The fan receives the temperature signal transmitted by the temperature sensor and transmits the gas in the first channel to the air outlet through the second channel, or to the heat exchange device through the third channel.

2. The photovoltaic heat treatment system according to claim 1, characterized in that, The second channel is equipped with a second control valve, which is used to control the connection or disconnection of the outlet end of the fan with the second channel; The third channel is equipped with a third control valve, which is used to control the connection or disconnection of the outlet end of the fan with the third channel.

3. The photovoltaic heat treatment system according to claim 1, characterized in that, The heat exchange device includes: an insulated box and a heat exchanger; One wall of the insulated box is connected to the third channel, and the heat exchanger is disposed inside the insulated box.

4. The photovoltaic heat treatment system according to claim 3, characterized in that, At least one wall of the insulated box is provided with motorized louvers.

5. The photovoltaic heat treatment system according to claim 4, characterized in that, The insulated box includes a first box surface and a second box surface that are arranged opposite to each other on both sides of the third channel, and the electric louvers are respectively arranged on the first box surface and the second box surface.

6. The photovoltaic heat treatment system according to claim 5, characterized in that, The insulated box includes: a steel frame and multiple insulation panels; The steel frame is a cubic structure, and the multiple insulation boards are sequentially connected and attached to the steel frame and sandwiched between the first box surface and the second box surface.

7. The photovoltaic heat treatment system according to claim 3, characterized in that, A medium inlet is provided on the third box surface of the insulated box, and the medium inlet is connected to the third channel; a medium outlet is provided on the fourth box surface opposite to the third box surface.

8. The photovoltaic heat treatment system according to claim 1, characterized in that, The temperature sensors are multiple and spaced apart along the height direction of the first channel.

9. The photovoltaic heat treatment system according to claim 1, characterized in that, The fan is a variable frequency fan.

10. The photovoltaic heat treatment system according to claim 3, characterized in that, The heat exchanger is one of the following: a split air conditioner outdoor unit, an air source heat pump outdoor unit, an air source heat pump water heater outdoor unit, or a multi-split air conditioner outdoor unit.

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