CN100432571C - Solar energy enhanced natural ventilating and green lighting system - Google Patents

Abstract

The invention relates to a solar energy-enhanced natural ventilation and green lighting system, which belongs to the field of building energy conservation. The device includes a light pipe system (7), a sloping roof (2), a ceiling (3) connected to the sloping roof (2), a solar heat collector (4), a ventilation channel (5), a thermal storage wall ( 12), insulation wall (13), chimney (6), first valve (9), second valve (10). The solar collector is located on the top of the sloping roof, and the ventilation channel is located between the solar collector and the insulation wall. A first valve is arranged at the entrance of the end of the ventilation passage into the chimney, and a second valve is arranged between the end of the ventilation passage, the insulating wall and the light pipe system. This system overcomes the shortcoming of only relying on natural ventilation with a small pressure head, and improves the ventilation efficiency in the building.

Description

Solar energy enhanced natural ventilation and green lighting system

technical field

The invention relates to a solar energy-enhanced natural ventilation and green lighting system. The system mainly uses the sun's light energy to realize green lighting of buildings, uses the sun's heat energy to strengthen the building's natural ventilation, and simultaneously realizes building heating in winter, air conditioning and transition in summer. Seasonal natural ventilation, to achieve the purpose of building energy saving, belongs to the field of building energy saving.

Background technique

my country's building energy consumption is astonishing, and the energy consumed directly and indirectly by building and using buildings accounts for 46.7% of the total energy consumption of the whole society (statistics from the Ministry of Construction). At present, 95% of the existing buildings in our country fail to meet the energy-saving standards, and more than 80% of the newly-added buildings fail to meet the energy-saving standards. environmental pollution. In these high-energy-consumption buildings, lighting energy consumption accounts for 20-30% of the entire building energy consumption, and air-conditioning refrigeration and heating energy consumption accounts for about 50%-60%. Saving lighting and HVAC energy consumption has become a problem that cannot be ignored.

Light pipe (Light Pipe) technology is an effective way to utilize solar light. It can not only lead light to places where other methods cannot reach or have only weak light without generating too much heat, but also improve buildings. Indoor air quality (just 50lux of natural light can significantly reduce loneliness for those working underground). Light pipes can be widely used in schools, museums, office buildings, stadiums, public toilets, garbage disposal plants and other public facilities and industrial and civil buildings, especially in dangerous places such as flammable and explosive, clean rooms, basements, garages, mines 1. The shady room of the building can be completely or partially illuminated by natural light during the day, which greatly saves electric energy, thereby reducing SO ₂ , CO ₂ , NO ₂ and other waste gases and floating dust generated by power generation, and achieving the purpose of protecting the environment. In addition, the solar heat transmitted by the light pipe is less than that of the window, which can prevent internal heat gain in summer and prevent heat loss in winter, which has positive significance for building energy saving.

The combination of light pipe technology and ventilation technology is an innovation in light pipe technology, which can not only realize lighting, but also realize indoor ventilation of buildings and increase the fresh air volume in buildings. In the applicant's patent ZL200420118097.8, a light pipe system with photocatalytic air purification and natural ventilation functions is disclosed. The light transmission channel and the ventilation channel are arranged coaxially. The role of light illumination, while the annular channel between the light pipe and the air duct is used as the indoor ventilation channel of the building. Indoor air quality. However, the natural ventilation of this system relies on the wind pressure caused by the wind and the heat pressure generated by the temperature difference between indoor and outdoor air to make the air flow, which has the disadvantages of small pressure head and the like. And the research that light pipe green lighting technology and solar chimney strengthens natural ventilation technology is combined, does not see any report at present.

Invention content:

The purpose of the present invention is to overcome the shortcoming of the small pressure head caused by simply utilizing natural ventilation in the prior art, and propose a solar energy-enhanced natural ventilation and green lighting system, which combines the use of solar energy-enhanced natural ventilation with light pipe technology, The ventilation volume in the building is improved, and the green lighting of the building, heating in winter, air conditioning in summer and natural ventilation in transitional seasons are realized.

To achieve the above object, the present invention takes a series of measures. The system includes a light pipe system 7, which is characterized in that it also includes a sloping roof 2, a ceiling 3 connected to the sloping roof 2, a solar heat collector 4, a ventilation channel 5, a heat storage wall 12, a heat insulation wall 13, Chimney 6, the first valve 9 that controls the air in the ventilation passage 5 to be discharged outdoors, the second valve 10 that controls the air in the ventilation passage 5 to enter the room; wherein, the solar collector 4 is located at the top of the inclined roof 2, and the storage Thermal wall 12 is positioned at below solar heat collector 4, and thermal insulation wall 13 is positioned at the top of sloping roof 2, and ventilation passage 5 is positioned between solar collector 4 and thermal insulation wall 13, and chimney 6 is positioned at sloping roof 2 tops and is connected with ventilation. The air passages 5 are connected, and the green lighting light pipe system 7 is coaxially arranged in the center of the chimney. The first valve 9 is set at the entrance of the chimney 6 at the end of the ventilation passage 5, and at the end of the ventilation passage 5, the heat insulation wall 13 and the light pipe system. 7 is provided with a second valve 10.

The shape of the light guide system 7 is cylindrical or square or wedge.

The light pipe system 7 is a seamless light pipe or a combination of a seamless light pipe and a slit light pipe.

A device for evenly distributing light is arranged inside the light guide with slits.

There is at least one group of solar heat collectors 4 positioned on the top of the sloping roof 2 .

The heat storage wall 12 is located at the upper part of the ventilation channel 5 below the solar heat collector 4 , and can also be located at the lower part of the ventilation channel 5 below the solar collector 4 or the upper part of the heat insulating wall.

The light guide light source is any one of sunlight, artificial light source, light storage material light source, combination of solar light source and artificial light source, combination of solar light source and light storage material light source, or combination of solar light source, light storage material light source and artificial light source.

The solar light collecting cover 8 and the diffuser cover 11 at both ends of the light pipe system 7 are absolutely sealed with the light pipe to avoid the entry of dust, ensure the light transmission efficiency, and reduce the maintenance cost of the system at the same time.

The heat storage wall 12 is used to store the heat energy of the sun and strengthen natural ventilation. The heat insulation wall 13 is used to block the heat emitted by the heat storage wall 12 from entering the room.

The system can simultaneously realize green lighting, heating in winter, air conditioning in summer and enhanced natural ventilation in transitional seasons. When realizing heating in winter, the first valve 9 that makes the air in the ventilation passage 5 be discharged to the outside can be closed, and the second valve 10 that the air in the ventilation passage 5 enters the room can be opened, so that under the effect of solar heat , the air in the ventilation channel 5 under the solar collector 4 is heated, generates buoyancy, moves upwards and enters the room, mixes with the air with a lower temperature in the room, and is heated in circulation, so that winter heating under the natural ventilation function can be realized . When realizing air-conditioning in summer, the first valve 9 that makes the air in the ventilation passage 5 be discharged outdoors is opened, and the second valve 10 that the air in the ventilation passage 5 is entered into the room can be closed, so that the outdoor temperature is lower than that in summer. Part of the indoor temperature is day or night, under the action of thermal storage of the thermal storage wall 12 under the solar collector 4, the air in the air duct connected to the thermal storage wall is heated, natural ventilation is strengthened, and the indoor high-temperature and high-humidity air is discharged from the room , realize air conditioning in summer under the function of natural ventilation, and reduce the high energy consumption of buildings due to the use of air conditioning.

The advantage of the present invention is that it combines solar energy enhanced natural ventilation technology with light pipe green lighting technology, overcomes the shortcoming of relying solely on natural ventilation with a small pressure head, improves the ventilation efficiency in buildings, and truly realizes green lighting and natural ventilation in buildings , Significantly reduce building ventilation and lighting energy consumption, reduce building energy consumption.

Description of drawings

Figure 1, Sectional view 1 of solar energy enhanced natural ventilation and green lighting system.

Figure 2, Sectional view 2 of solar energy enhanced natural ventilation and green lighting system.

Figure 3, Sectional view 3 of solar energy enhanced natural ventilation and green lighting system.

Fig. 4, sectional view 1 of the solar energy-enhanced natural ventilation and the green lighting system with light pipes.

Fig. 5, section view 2 of a green lighting system with solar energy enhanced natural ventilation and a light pipe.

Fig. 6, cross-sectional view 1 of the solar energy-enhanced natural ventilation, green lighting with light pipes and artificial light source lighting system.

Fig. 7, cross-sectional view 2 of the solar energy-enhanced natural ventilation, green lighting with light pipes and artificial light source lighting system.

Figure 8, Sectional view 4 of the solar energy enhanced natural ventilation and green lighting system.

Fig. 9 is a sectional view 3 of a green lighting system with solar energy enhanced natural ventilation and a light pipe.

Fig. 10 is a sectional view 4 of a green lighting system with solar energy enhanced natural ventilation and a light pipe.

Fig. 11, cross-sectional view 3 of the solar energy-enhanced natural ventilation, green lighting with light pipes and artificial light source lighting system.

Fig. 12, cross-sectional view 4 of the solar energy-enhanced natural ventilation, green lighting with light pipes and artificial light source lighting system.

In the figure: 1. Building, 2. Sloping roof, 3. Ceiling, 4. Solar collector, 5. Ventilation channel, 6. Chimney, 7. Light pipe system, 8. Sunlight collecting cover, 9 , first valve, 10, second valve, 11, light diffuser, 12, thermal storage wall, 13, thermal insulation wall, 14, device for evenly distributing light, 15, outdoor daylight, 16, solar radiation, 17, indoor air, 18. Artificial light source, 19. Slit light guide

Detailed ways

Implementation 1

As shown in Figure 1, the present embodiment is to realize solar energy enhanced natural ventilation and green lighting system for building 1, and this system mainly comprises sloping roof 2, the ceiling 3 that links to each other with sloping roof 2, solar heat collector 4, ventilation exchange Air passage 5, heat storage wall 12, heat insulation wall 13, chimney 6, first valve 9 for controlling the air in the ventilation and ventilation passage 5 to be discharged to the outside, and second valve 10 for controlling the air in the ventilation and ventilation passage 5 to enter the room; , the solar heat collector 4 is located at the top of the sloping roof 2, the heat storage wall 12 is located below the solar heat collector 4, the ventilation channel 5 is located between the solar heat collector 4 and the insulation wall 13, and the chimney 6 is located at the top of the sloping roof 2 and It is connected with the ventilation passage 5, and the green lighting light pipe system 7 is coaxially arranged in the center of the chimney. The first valve 9 is set at the entrance of the chimney 6 at the end of the ventilation passage 5, and at the end of the ventilation passage 5, the heat insulation wall 13 and the A second valve 10 is arranged between the light pipe systems 7 .

The heat storage wall 12 is used to store the solar heat energy absorbed by the heat collector 4, and the heat insulation wall 13 blocks the heat exchange between the air in the ventilation channel 5 and the sloped roof 2, preventing summer solar radiation from entering the room. The central coaxial arrangement of the chimney 6 is a green lighting light pipe system 7, and the top of the light pipe system 7 is provided with a sunlight collector cover 8, so that under the effect of solar energy, the outdoor daylight 15 is in the sunlight collector 8. Under the concentrated light, the outdoor sunlight is introduced into the room through the light guide 7 to realize natural lighting. A diffuser cover 11 is buckled at the end of the light guide 6 to prevent glare from the light source and prevent outdoor dust from entering the light guide 7 to reduce the light transmission effect of the light guide 7 .

The first valve 9 and the second valve 10 are used to change the direction of air flow in the ventilation channel 5 under different climatic conditions. Under the action of solar thermal energy, the solar thermal collector 4 located on the upper part of the sloping roof 2 absorbs solar thermal energy and transfers the thermal energy to the heat storage wall 12, so that the air flowing through the ventilation passage 5 is heated and the air flow is strengthened . In winter, the first valve 9 that is used for the air in the ventilation passage 5 to flow out of the room is closed, and the second valve 10 for the air in the ventilation passage 5 to flow into the room is opened, so that the indoor air entering the ventilation passage 5 17 is heated and enters the room through the second valve 10, mixes with the cold air in the room, and the room air is continuously heated by circulation to realize heating in winter. In summer, when the indoor temperature is higher than the outdoor, or the indoor humidity is higher during the day and night, the first valve 9 is opened, the second valve 10 is closed, and the indoor high-temperature and high-humidity air enters the ventilation channel 5 to be heated, that is It can be discharged outdoors under the strengthening of solar thermal energy, and the heat stored in the heat storage wall 12 during the day is used at night to heat the air in the ventilation passage 5, so as to accelerate the discharge of indoor high-temperature and high-humidity air, and realize air conditioning in summer. In the transitional season, solar thermal energy can be used to enhance the natural ventilation of buildings and improve the indoor air quality of buildings.

Embodiment 2

As shown in Figure 2, the implementation process is similar to Scheme 1, except that the heat storage wall 12 is arranged at the lower part of the ventilation channel 5 and the upper part of the heat insulating wall 13, so as to realize indoor heating in winter, air conditioning in summer and natural ventilation in transitional seasons, and improve Indoor air quality in buildings.

Embodiment 3

As shown in Figure 3, the implementation process is similar to Scheme 1, except that a group of solar collectors 4 are arranged above the sloped roof 2 to realize indoor heating in winter, air conditioning in summer and natural ventilation in transitional seasons, improving the indoor air quality of the building .

Embodiment 4

As shown in Figure 4, the implementation process is similar to that of Scheme 1, except that the end of the light pipe system 7 is used in combination with the slit light pipe 19 to realize daylighting, and at the same time, the slit light pipe 19 is arranged to evenly distribute the light introduced from the outside The device 14, such a device includes a reflector to realize uniform illumination of indoor light.

Embodiment 5

As shown in Figure 5, the implementation process is similar to Scheme 4, except that a group of solar collectors 4 are arranged above the sloped roof 2 to realize indoor heating in winter, air conditioning in summer and natural ventilation in transitional seasons, improving the indoor air quality of the building .

Embodiment 6

As shown in FIG. 6 , the implementation process is similar to solution 4, except that artificial light sources 18 are arranged at both ends of the slitted light pipe 19 to realize indoor lighting at night or when the intensity of natural light is insufficient.

Embodiment 7

As shown in FIG. 7 , the implementation process is similar to that of Scheme 5. Artificial light sources 18 are arranged at both ends of the slitted light pipe 19 to realize indoor lighting at night or when the intensity of natural light is insufficient.

Embodiment 8

As shown in Figure 8, the implementation process is similar to Scheme 2, except that a group of solar collectors 4 are arranged above the sloped roof 2 to realize indoor heating in winter, air conditioning in summer and natural ventilation in transitional seasons, improving the indoor air quality of the building .

Embodiment 9

As shown in Figure 9, the implementation process is similar to that of Scheme 4, except that the thermal storage wall 12 is arranged at the lower part of the ventilation channel 5 and the upper part of the thermal insulation wall 13, so as to realize indoor heating in winter, air conditioning in summer and natural ventilation in transitional seasons, and improve Indoor air quality in buildings.

Embodiment 10

As shown in Figure 10, the implementation process is similar to that of Scheme 5, except that the heat storage wall 12 is arranged at the lower part of the ventilation channel 5 and the upper part of the heat insulating wall 13, so as to realize indoor heating in winter, air conditioning in summer and natural ventilation in transitional seasons, and improve Indoor air quality in buildings.

Embodiment 11

As shown in Figure 11, the implementation process is similar to that of Scheme 6, except that the heat storage wall 12 is arranged at the lower part of the ventilation channel 5 and the upper part of the heat insulation wall 13, so as to realize indoor heating in winter, air conditioning in summer and natural ventilation in transitional seasons, and improve Indoor air quality in buildings.

Embodiment 12

As shown in Figure 12, the implementation process is similar to Scheme 7, except that the thermal storage wall 12 is arranged at the lower part of the ventilation channel 5 and the upper part of the thermal insulation wall 13, so as to realize indoor heating in winter, air conditioning in summer and natural ventilation in transitional seasons, and improve Indoor air quality in buildings.

Claims (6)

1. Solar energy enhanced natural ventilation and green lighting device. This device includes a light pipe system (7), which is characterized in that: it also includes a sloping roof (2), a ceiling (3) connected to the sloping roof (2), and the solar energy collection The first valve ( 9), the second valve (10) that controls the air in the ventilation channel (5) to enter the room; wherein, the solar heat collector (4) is located on the upper part of the sloping roof (2), and the heat storage wall (12) is located on the top of the solar heat collector Below the device (4), the insulation wall (13) is located on the upper part of the sloping roof (2), the ventilation channel (5) is located between the solar collector (4) and the insulation wall (13), and the chimney (6) is located on the slope The top of the roof (2) is connected to the ventilation channel (5), the green lighting light pipe system (7) is coaxially arranged in the center of the chimney, and the first valve is set at the entrance of the ventilation channel (5) into the chimney (6) (9), a second valve (10) is arranged between the end of the ventilation channel (5), the heat insulation wall (13) and the light pipe system (7). 2. The solar energy-enhanced natural ventilation and green lighting device according to claim 1, characterized in that: the shape of the light guide system (7) is cylindrical, square or wedge-shaped. 3. The solar energy-enhanced natural ventilation and green lighting device according to claim 1, characterized in that the light pipe system (7) is a seamless light pipe or a combination of a seamless light pipe and a slit light pipe. 4. The solar energy-enhanced natural ventilation and green lighting device according to claim 3, characterized in that: a device (14) for evenly distributing light is arranged inside the slitted light pipe. 5. The solar energy-enhanced natural ventilation and green lighting device according to claim 1, characterized in that there are at least one set of solar heat collectors (4) on the top of the sloping roof (2). 6. The solar energy-enhanced natural ventilation and green lighting device according to claim 2, characterized in that: the heat storage wall (12) is located on the upper part of the ventilation channel (5) below the solar heat collector (4) , or the bottom of the ventilation passage (5) below the solar collector (4), and the top of the insulation wall.

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