Heat pipe light steel keel prefabricated building photovoltaic thermal breathing wall system

Abstract

The present invention discloses a heat pipe-type light steel keel prefabricated building photovoltaic thermal breathing wall system, comprising a heat pipe-type cooling photovoltaic panel layer, a prefabricated light steel keel enclosure structure, and an air interlayer. The heat pipe-type cooling photovoltaic panel layer includes photovoltaic panels and multiple groups of Z-shaped heat pipe heat exchange bundles, each group of which includes a horizontal heat collection copper tube embedded in a thermal insulation material layer and a horizontal heat exchange sleeve arranged in the air interlayer, and the horizontal heat collection copper tube is filled with a low-boiling point working medium. The inner tubes of the horizontal heat exchange sleeves of the multiple groups of Z-shaped heat pipe heat exchange bundles are connected and filled with water. Air vents are provided at the top and bottom of the air interlayer. The present invention can absorb more heat through boiling heat transfer, reduce the temperature of the photovoltaic panel backplane, and improve power generation efficiency. It can also timely condense the gaseous working medium and fully recover heat for the building's domestic hot water supply. It can also improve indoor air quality while reducing the indoor fresh air cooling and heating load.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy utilization and building energy conservation in buildings, and specifically relates to a light steel assembled building energy-saving wall system that integrates solar photovoltaic, photothermal utilization and passive air conditioning functions. Background Art

[0002] The construction sector is a major contributor to carbon emissions, accounting for approximately 40% of total societal emissions. Lightweight steel-framed prefabricated buildings are not only recyclable and reusable, reducing construction waste, but are also factory-produced and assembled on-site, significantly accelerating construction cycles and meeting green building requirements. Therefore, they have been widely adopted in low-rise buildings, such as rural residences. Increasing the utilization of renewable energy in buildings is a key measure to reduce carbon emissions. Integrating solar photovoltaics, solar water heating systems, air-source electric heat pumps, and various waste heat utilization methods are all potential options for increasing renewable energy in buildings. Conventional photovoltaic panels typically convert 4% to 17% of incoming solar radiation into electricity, providing clean electricity and domestic hot water year-round. The remaining 50% or more of the solar radiation is converted into heat and absorbed by the panel surface. Excessive temperatures can reduce the system's power generation efficiency and shorten the lifespan of the photovoltaic modules. To extend the service life of photovoltaic facades on buildings, research into efficient solar photovoltaic cooling and solar thermal utilization technologies is urgently needed. Summary of the Invention

[0003] In response to the above-mentioned prior art, the present invention provides a heat pipe light steel keel assembled building breathing wall system, in order to achieve the following purposes: (1) provide clean electricity and domestic hot water for the building throughout the year; (2) solve the problem of overheating of the back of the solar photovoltaic panel during operation, improve the power generation efficiency and extend the service life of the photovoltaic panel; (3) utilize the light steel keel cavity in the assembled wall to timely transport fresh air to ensure indoor air quality while reducing the building's cooling and heating load as much as possible; (4) the breathing wall system can be produced in a modular manner and installed in a dry manner, thereby improving construction efficiency.

[0004] In order to solve the above technical problems, the present invention proposes a heat pipe type light steel keel assembled building photovoltaic thermal breathing wall system, including a heat pipe type cooling photovoltaic panel layer and an assembled light steel keel enclosure structure, the assembled light steel keel enclosure structure includes a light steel keel, the outer side of the light steel keel is provided with a thermal insulation material layer, the inner side of the light steel keel is provided with a light environmentally friendly building material board; an air layer is left between the thermal insulation material layer and the light environmentally friendly building material board; on the light steel keel, an air layer is provided between the thermal insulation material layer and the light environmentally friendly building material board; A plurality of first guide plates are provided on one side, and a plurality of second guide plates are provided on one side of the light environmentally friendly building material board, and all the first guide plates and the second guide plates are arranged alternately on both sides of the air interlayer at intervals in height; the heat pipe cooling photovoltaic panel layer includes photovoltaic panels and multiple groups of Z-shaped heat pipe heat exchange bundles, and the photovoltaic panels are arranged on the outside of the thermal insulation material layer; multiple groups of Z-shaped heat pipe heat exchange bundles are arranged in a staggered manner from bottom to top in the thermal insulation material layer and the air interlayer; each group of Z-shaped heat pipe heat exchange bundles is arranged in a staggered manner from bottom to top in the thermal insulation material layer and the air interlayer; The tube bundle includes a horizontal heat-collecting copper tube embedded in the thermal insulation material layer and two horizontal heat-exchange sleeves arranged in the air interlayer, and the two horizontal heat-exchange sleeves are respectively located at the ends of the adjacent first guide plate and the second guide plate; the horizontal heat-collecting copper tube is sheathed with heat-exchange fins close to the back of the photovoltaic panel, and the horizontal heat-exchange sleeve includes a horizontal heat-exchange sleeve inner tube and a horizontal heat-exchange sleeve outer tube, and the horizontal heat-collecting copper tube and the horizontal heat-exchange sleeve outer tube are respectively connected in sequence through an oblique gas collecting guide pipe, and the water The horizontal heat-collecting copper tube is provided with a working fluid filling port, through which a low-boiling-point working fluid is filled into the horizontal heat-collecting copper tube; the inner tubes of the horizontal heat exchange sleeves of multiple groups of Z-shaped heat exchange tube bundles are connected, and are provided with a water inlet and a water outlet; the bottom of the thermal insulation material layer and the lightweight environmentally friendly building material board are respectively provided with an outer plate fresh air inlet and an indoor return air inlet that pass through the air interlayer, and the top of the thermal insulation material layer and the lightweight environmentally friendly building material board are respectively provided with an outdoor exhaust outlet and an inner plate fresh air inlet that pass through the air interlayer.

[0005] Furthermore, the heat pipe light steel keel assembled building photovoltaic thermal breathing wall system of the present invention comprises:

[0006] All the first guide plates and the second guide plates are arranged alternately at intervals in height on both sides of the air interlayer, and an air guide channel passing through all the horizontal heat exchange sleeve outer tubes and running in a Z-shape is formed in the air interlayer from bottom to top.

[0007] The outer panel fresh air inlet is flush with the indoor return air inlet, and the outdoor exhaust outlet is flush with the inner panel fresh air inlet.

[0008] The outer panel fresh air inlet, indoor return air inlet, outdoor exhaust outlet and inner panel fresh air inlet are respectively provided with air volume regulating valves; the outer panel fresh air inlet is provided with an air filter; and the inner panel fresh air inlet is provided with an induced draft fan.

[0009] The outer side of the photovoltaic panel is provided with a simulation coating.

[0010] The light environmentally friendly building material board is European pine board.

[0011] The heat pipe light steel keel prefabricated building photovoltaic thermal breathing wall system proposed in this invention realizes the efficient use of solar energy in buildings, providing users with electricity and hot water for daily use throughout the year. The specific beneficial effects are:

[0012] The horizontal heat-collecting copper tubes of the Z-shaped heat exchange bundle in the heat-pipe cooling photovoltaic panel layer use a low-boiling-point working fluid instead of traditional cooling medium water, achieving boiling heat transfer to improve heat exchange efficiency, absorb more heat, reduce the temperature of the photovoltaic panel backplane, and improve power generation efficiency; the horizontal heat exchange sleeve has high heat exchange efficiency and can condense the gaseous working fluid in time, fully recovering this part of the heat for the building's domestic hot water supply. In addition, the heat pipe heat exchange bundle does not require a working fluid pump and can complete the circulation solely by gravity, achieving clean and efficient energy utilization; the outdoor fresh air fully exchanges heat with the Z-shaped heat exchange bundle before entering the room, improving the indoor air quality while reducing the cooling and heating load brought by the indoor fresh air. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front cross-sectional view of the breathing wall system proposed in the present invention;

[0014] Figure 2 for Figure 1 A top view of the breathing wall system shown;

[0015] Figure 3 for Figure 2 The detailed structure of the Z-shaped heat pipe heat exchange tube bundle as shown in the figure.

[0016] Figure 4 for Figure 1 The structure diagram of the heat collection side of the Z-shaped heat exchange tube bundle located on the back of the photovoltaic panel in the breathing wall shown;

[0017] Figure 5 for Figure 1 The structure diagram of the heat dissipation side of the Z-shaped heat pipe heat exchange tube bundle in the breathing wall is shown.

[0018] In the picture:

[0019] 1-Z-shaped heat pipe bundle 2-Horizontal heat collection copper tube 3-Horizontal heat exchange casing inner tube

[0020] 41-bottom horizontal heat exchange outer tube 42-top horizontal heat exchange outer tube 51-first oblique gas collecting guide tube

[0021] 52-second oblique gas collecting and guiding pipe 6-photovoltaic panel 7-air space

[0022] 81-first guide plate 82-second guide plate 9-lightweight environmentally friendly building material board

[0023] 10- Light steel keel 11- Air filter 12- New air outlet on outer panel

[0024] 13-Indoor return air vent 14-Outdoor exhaust vent 15-Inner panel fresh air vent

[0025] 16- induced draft fan 17- air volume control valve 18- simulated coating

[0026] 19-working fluid filling port 20-water inlet 21-water outlet

[0027] 22-Heat exchange fins DETAILED DESCRIPTION

[0028] The design concept of the heat pipe light steel keel prefabricated building photovoltaic thermal breathing wall system proposed in the present invention is: combining the heat pipe cooling photovoltaic panel layer, air interlayer and light steel keel enclosure structure to form a new type of composite breathing wall, integrating solar photovoltaic, photothermal utilization and passive air conditioning functions, to achieve low energy consumption and low carbon operation of the building.

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the following embodiments are by no means intended to limit the present invention in any way.

[0030] like Figure 1 As shown, the present invention proposes a heat pipe light steel keel assembled building photovoltaic thermal breathing wall system, which mainly includes a heat pipe cooling photovoltaic panel layer, an air interlayer 7 and an assembled light steel keel enclosure structure.

[0031] The assembled light steel keel enclosure structure includes a light steel keel 10, an insulation material layer is provided on the outside of the light steel keel 10, and a light environmentally friendly building material board 9 is provided on the inside of the light steel keel 10. In this embodiment, the light environmentally friendly building material board 9 is a European pine board.

[0032] The air interlayer 7 is located between the thermal insulation material layer and the lightweight environmentally friendly building material board 9; on the light steel keel 10, a plurality of first guide plates 81 are provided on the side located on the thermal insulation material layer, and a plurality of second guide plates 82 are provided on the side located on the lightweight environmentally friendly building material board 9. All the first guide plates 81 and the second guide plates 82 are arranged on both sides of the air interlayer 7 in a staggered manner at intervals in height.

[0033] The heat pipe cooling photovoltaic panel layer includes a photovoltaic panel 6 and a plurality of groups of Z-shaped heat pipe heat exchange bundles 1. The photovoltaic panel 6 is arranged on the outside of the thermal insulation material layer. The outer side of the photovoltaic panel 6 is provided with a simulation coating 18 to achieve the aesthetic requirements of the wall through color spraying technology. The plurality of groups of Z-shaped heat pipe heat exchange bundles 1 are arranged in the thermal insulation material layer and the air interlayer 7 from bottom to top. In the present invention, each group of Z-shaped heat pipe heat exchange bundles 1 includes a horizontal heat collection copper tube 2 embedded in the thermal insulation material layer and two horizontal heat exchange sleeves arranged in the air interlayer 7. For the convenience of description, in this embodiment, the two horizontal heat exchange sleeves are respectively recorded as the top horizontal heat exchange sleeve and the bottom horizontal heat exchange sleeve according to the upper and lower positions. The bottom horizontal heat exchange sleeve is located at the end of the first guide plate 81, and the top horizontal heat exchange sleeve is located at the end of the second guide plate 82; the horizontal heat collection copper tube 2 is provided with a heat exchange fin 22 close to the back of the photovoltaic panel 6 to increase the heat exchange area, such as Figure 2 and Figure 3 As shown. The horizontal heat exchange sleeve includes a horizontal heat exchange sleeve inner tube 3 and a horizontal heat exchange sleeve outer tube. The horizontal heat collection copper tube 2 and the horizontal heat exchange sleeve outer tube are respectively connected in sequence through oblique gas collection guide tubes. For the convenience of description, the oblique gas collection guide tube connected between the horizontal heat collection copper tube 2 and the bottom horizontal heat exchange sleeve outer tube 41 is recorded as the first oblique gas collection guide tube 51, and the oblique gas collection guide tube connected between the bottom horizontal heat exchange sleeve outer tube 41 and the top horizontal heat exchange sleeve outer tube 42 is recorded as the second oblique gas collection guide tube 52; the horizontal heat collection copper tube 2 is provided with a working medium filling port 19, through which a low-boiling-point working medium is filled into the horizontal heat collection copper tube 2, such as Figure 4 As shown, the heat exchange fins 22 provided on the horizontal heat collection copper tube 2 serve as an efficient heat exchange bridge between the horizontal heat collection copper tube 2 and the photovoltaic panel 6 back plate. The horizontal heat collection copper tube 2 is filled with a low boiling point working fluid. The insulation material layer provided on the outside and surrounding of the heat exchanger can prevent heat loss. The horizontal heat exchange sleeve inner tube 3 of multiple groups of Z-shaped heat pipe heat exchange tube bundles 1 is connected and provided with a water inlet 20 and a water outlet 21. Figure 5 As shown, when the technical solution of the present invention is implemented, the water inlet 20 is connected to the water source, and the outlet water is introduced into the hot water storage tank. The hot water storage tank is usually set on the roof of the building and connected to the water outlet 21 of the breathing wall system. Insulation material is provided around it to prevent heat loss.

[0034] like Figure 1As shown, the bottom of the insulation material layer and the lightweight environmentally friendly building material board 9 are respectively provided with an outer panel fresh air vent 12 and an indoor return air vent 13 that penetrate the air interlayer 7. The top of the insulation material layer and the lightweight environmentally friendly building material board 9 are respectively provided with an outdoor exhaust vent 14 and an inner panel fresh air vent 15 that penetrate the air interlayer 7. The outer panel fresh air vent 12 and the indoor return air vent 13 are flush with each other, and the outdoor exhaust vent 14 and the inner panel fresh air vent 15 are flush with each other. The outer panel fresh air vent 12, the indoor return air vent 13, the outdoor exhaust vent 14, and the inner panel fresh air vent 15 are each provided with an air volume regulating valve. The outer panel fresh air vent 12 is provided with an air filter 11; the inner panel fresh air vent 15 is provided with an induced draft fan 16. In the present invention, all the first guide plates 81 and the second guide plates 82 are arranged alternately at intervals in height on both sides of the air interlayer 7 to enhance heat exchange between the Z-shaped heat pipe bundle 1 and the air, and all the horizontal heat exchange sleeves are arranged at the ends of the corresponding guide plates. Therefore, the air guide channel formed from bottom to top in the air interlayer 7 is an air guide channel that passes through the outer tubes 4 of all the horizontal heat exchange sleeves and runs along a Z-shape.

[0035] The following describes the operating modes of the breathing wall system of the present invention in different seasons.

[0036] 1. Winter operation mode: The photovoltaic panels 6 in the heat pipe cooling photovoltaic panel layer absorb solar energy and convert it into DC electricity. The DC electricity is converted into AC electricity through an inverter and provided to users or connected to the power grid. The outer surface of the photovoltaic panel 6 can be coated to improve the visual effect of the building facade. The horizontal heat collecting copper tube 2 of the Z-shaped heat exchange tube bundle 1 is filled with liquid low-boiling point working medium, which fully absorbs the heat generated by the photovoltaic panel 6 during operation, reduces the temperature of the back plate of the photovoltaic panel 6, and prolongs its service life while improving the power generation efficiency of the photovoltaic panel 6. The vaporized low-boiling point working medium enters the top horizontal heat exchange sleeve outer tube 42 arranged in the air interlayer 7 through the first oblique air collecting guide tube 51 connected between the horizontal heat collecting copper tube 2 and the bottom horizontal heat exchange sleeve outer tube 41, and enters the bottom horizontal heat exchange sleeve outer tube 42. After heat exchange, part of the low-temperature water in the inner tube 41 is condensed into liquid, and the remaining gaseous working medium enters the top sleeve through the second inclined gas collecting and guiding pipe 52 to continue heat exchange, gas-liquid separation, and enhance the heat exchange effect. After the gaseous working medium releases heat and condenses into liquid, it flows back to the horizontal heat collection copper tube 2 by gravity. After the water temperature in the inner tube 3 of the horizontal heat exchange sleeve rises, it is discharged into the hot water storage tank through the water outlet 21 to supply domestic hot water to the building; at the same time, the inner plate fresh air inlet 15 and the induced draft fan 16 in the air interlayer are opened. Outdoor low-temperature fresh air is introduced through the fresh air outlet 12 of the outer plate of the air interlayer 7 through the air filter 11, and the introduced air volume can be controlled by the air volume regulating valve 17. The filtered outdoor fresh air is orderly transmitted along the first and second guide plates 81 and 82 to fully exchange heat with the low-boiling-point working medium in the outer tubes 41 and 42 of the horizontal heat exchange sleeves on the bottom and top layers of the Z-shaped heat exchange tube bundles arranged in a staggered manner in the air interlayer 7. After the air temperature rises, it is sent into the room through the fresh air outlet 15 of the inner plate by the induced draft fan 16 on the upper part of the air interlayer 7, thereby improving the indoor air quality in winter while reducing heating energy consumption as much as possible. When the supply air temperature is lower than the indoor set temperature, the air volume regulating valve at the indoor return air outlet 13 is opened, and the outdoor fresh air is mixed with the indoor return air and then fully heat exchanged with the gaseous low-boiling-point working medium in the outer tubes 41 and 42 of the horizontal heat exchange sleeves in the bottom and top layers of the Z-shaped heat exchange tube bundle arranged in a staggered manner along the first and second guide plates in the air layer 7. After the air temperature rises, it is then sent into the room through the fresh air outlet 15 on the inner plate by the induced draft fan 16 at the top of the air layer 7.

[0037] Summer Operation: The photovoltaic panels 6 in the heat-pipe-cooled photovoltaic panel layer absorb solar energy and convert it into DC electricity. The inverter then converts this DC electricity into AC electricity, which is then supplied to users or fed into the power grid. The exterior of the photovoltaic panels 6 can be coated to enhance the visual appearance of the building's exterior. The horizontal heat-collecting copper tube 2 of the Z-shaped heat exchange tube bundle 1 is filled with liquid low-boiling-point working medium, which fully absorbs the heat generated by the photovoltaic panel 6 during operation, reduces the temperature of the back plate of the photovoltaic panel 6, and prolongs the service life of the photovoltaic panel 6 while improving the power generation efficiency of the photovoltaic panel 6. The vaporized low-boiling-point working medium enters the outer tube 41 of the bottom horizontal heat exchange sleeve arranged in the air space 7 through the first oblique gas collecting and guiding pipe 51, and partially condenses into liquid after heat exchange with the low-temperature water in the inner tube of the bottom sleeve. The remaining gaseous working medium enters the top sleeve through the second oblique gas collecting and guiding pipe 52 to continue heat exchange, gas-liquid separation, and enhance the heat exchange effect. The gaseous working medium releases heat and condenses into liquid and then flows back to the horizontal heat-collecting copper tube 2 by gravity. After the water temperature in the inner tube 3 of the horizontal heat exchange sleeve rises, it enters the hot water storage tank through the water outlet 21 to supply domestic hot water to the building; at the same time, the inner plate fresh air inlet 15 and the induced draft fan 16 in the air space 7 are opened. High-temperature outdoor fresh air is introduced through the fresh air outlet 15 of the inner plate of the air interlayer 7 through the air filter 11. The introduced air volume can be controlled by the air volume regulating valve. The filtered outdoor fresh air is orderly transmitted along the guide plate to fully exchange heat with the low-boiling-point working medium in the outer tubes 41 and 42 of the horizontal heat exchange sleeves on the bottom and top layers of the Z-shaped heat exchange tube bundle 1 arranged in a staggered manner in the air interlayer 7, thereby reducing the air temperature. The air is then sent into the room through the fresh air outlet 15 of the inner plate by the induced draft fan 16 at the top of the air interlayer 7, thereby improving the indoor air quality in summer while reducing air conditioning energy consumption as much as possible. When the supply air temperature is higher than the indoor set temperature, the air volume regulating valve at the indoor return air outlet 13 is opened, and the outdoor fresh air is mixed with the indoor return air and then fully heat exchanged with the low-boiling-point working medium in the outer tubes 41 and 42 of the horizontal heat exchange sleeves in the bottom and top layers of the Z-shaped heat exchange tube bundle 1 arranged in a staggered manner in the air space 7 along the first and second guide plates 81 and 82. The air temperature is reduced and the air is then sent into the room through the fresh air outlet 15 of the inner panel by the induced draft fan 16 at the upper part of the air space 7 of the light steel keel wall.

[0038] 3. Transition season operation mode: When the outdoor temperature is lower than the indoor temperature in the transition season, the operation mode is the same as the winter operation mode; when the outdoor temperature is higher than the indoor temperature in the transition season, the operation mode is the same as the summer operation mode.

[0039] Although the present invention has been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can make many variations without departing from the purpose of the present invention, and these are all protected by the present invention.

Claims

1. A heat pipe type light steel keel assembled building photovoltaic thermal breathing wall system, comprising a heat pipe type cooling type photovoltaic panel layer and an assembled light steel keel enclosure structure, wherein the assembled light steel keel enclosure structure comprises a light steel keel (10), an outer side of the light steel keel (10) is provided with a thermal insulation material layer, and an inner side of the light steel keel (10) is provided with a light environmentally friendly building material board (9); characterized in that, An air interlayer (7) is left between the thermal insulation material layer and the lightweight environmentally friendly building material board (9); a plurality of first guide plates (81) are provided on the light steel keel (10) on one side of the thermal insulation material layer, and a plurality of second guide plates (82) are provided on one side of the lightweight environmentally friendly building material board (9); all the first guide plates (81) and the second guide plates (82) are arranged alternately at intervals in height on both sides of the air interlayer (7); The heat pipe cooling photovoltaic panel layer comprises a photovoltaic panel (6) and a plurality of groups of Z-shaped heat pipe heat exchange bundles (1), wherein the photovoltaic panel (6) is arranged outside the thermal insulation material layer; the plurality of groups of Z-shaped heat pipe heat exchange bundles (1) are arranged in a staggered manner from bottom to top in the thermal insulation material layer and the air interlayer (7); Each group of Z-shaped heat pipe heat exchange tube bundles (1) includes a horizontal heat collection copper tube (2) embedded in the thermal insulation material layer and two horizontal heat exchange sleeves arranged in the air interlayer (7), and the two horizontal heat exchange sleeves are respectively located at the ends of the adjacent first guide plate (81) and the second guide plate (82); the horizontal heat collection copper tube (2) is provided with a heat exchange fin (22) close to the back of the photovoltaic panel (6); the horizontal heat exchange sleeve includes a horizontal heat exchange sleeve inner tube (3) and a horizontal heat exchange sleeve outer tube; the horizontal heat collection copper tube (2) and the horizontal heat exchange sleeve outer tube are respectively connected in sequence through an oblique gas collection guide tube; the horizontal heat collection copper tube (2) is provided with a working medium filling port (19), and a low-boiling-point working medium is filled into the horizontal heat collection copper tube (2) through the working medium filling port (19); The horizontal heat exchange jacket inner tubes (3) of multiple groups of Z-shaped heat exchange tube bundles (1) are connected and provided with a water inlet (20) and a water outlet (21); The bottom of the thermal insulation material layer and the lightweight environmentally friendly building material board (9) are respectively provided with an outer plate fresh air outlet (12) and an indoor return air outlet (13) that are connected to the air interlayer (7), and the top of the thermal insulation material layer and the lightweight environmentally friendly building material board (9) are respectively provided with an outdoor exhaust outlet (14) and an inner plate fresh air outlet (15) that are connected to the air interlayer (7).

2. The heat pipe light steel keel assembled building photovoltaic thermal breathing wall system according to claim 1 is characterized in that: All the first guide plates (81) and the second guide plates (82) are arranged alternately at intervals in height on both sides of the air interlayer (7), and an air guide channel is formed in the air interlayer (7) from bottom to top, passing through the outer tubes of all horizontal heat exchange sleeves and running in a Z-shape.

3. The heat pipe light steel keel assembled building photovoltaic thermal breathing wall system according to claim 1 is characterized in that: The outer panel fresh air inlet (12) and the indoor return air inlet (13) are flush with each other in height, and the outdoor exhaust outlet (14) and the inner panel fresh air inlet (15) are flush with each other in height.

4. The heat pipe light steel keel assembled building photovoltaic thermal breathing wall system according to claim 1 is characterized in that: The outer panel fresh air inlet (12), the indoor return air inlet (13), the outdoor exhaust air inlet (14) and the inner panel fresh air inlet (15) are each provided with an air volume regulating valve; the outer panel fresh air inlet (12) is provided with an air filter (11); and the inner panel fresh air inlet (15) is provided with an induced draft fan (16).

5. The heat pipe light steel keel assembled building photovoltaic thermal breathing wall system according to claim 1 is characterized in that: The outer side surface of the photovoltaic panel (6) is provided with a simulation coating (18).

6. The heat pipe light steel keel assembled building photovoltaic thermal breathing wall system according to claim 1 is characterized in that: The light environmentally friendly building material board (9) is a European pine board.

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