Photovoltaic sun-shading daylighting roof device for shopping center

Abstract

The utility model belongs to the field of daylighting roofs, and particularly discloses a shopping center photovoltaic sunshade daylighting roof device which comprises a frame, a roof daylighting part and a side daylighting part. The top daylighting is arranged at the top of the frame, the side daylighting is arranged on the outer side of the frame, and the top daylighting and the side daylighting are both formed by arranging a plurality of pieces of light-transmitting glass and a plurality of solid plates in a staggered mode; the light-transmitting glass adopts light-transmitting cadmium telluride double-glass photovoltaic glass, and a single-crystal flexible photovoltaic module is arranged on the solid plate; normal lighting is achieved through the light-transmitting glass, the solid plate can block and reflect sunlight and reduce heat radiation and indoor temperature, attractive lighting roof patterns can be formed by controlling arrangement of the light-transmitting glass and the solid plate, power generation work can be conducted through the single-crystal flexible photovoltaic assembly when the solid plate conducts shading work, and the light-transmitting glass, the solid plate and the single-crystal flexible photovoltaic assembly are integrated. The light-transmitting cadmium telluride double-glass photovoltaic glass has a certain power generation effect while meeting the lighting requirement, and has higher economic and environment-friendly values.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of daylighting roof, concretely relates to a shopping center photovoltaic sunshade daylighting roof device. BACKGROUND

[0002] As a large commercial building, shopping center usually has large area indoor public space, and good daylighting is very important for shopping center, which can not only create comfortable and bright shopping environment for customers, improve shopping experience, but also reduce the use of indoor artificial lighting in daytime and reduce energy consumption, so that the daylighting roof device is used to realize daylighting on the top of shopping center.

[0003] However, the traditional shopping center daylighting roof is full light transmission structure, the solar radiation is strong in summer, the solar radiation of high area daylighting roof is too strong, which leads to high temperature of high area, and the high energy consumption of air conditioner is caused due to the unideal appearance comfort and single function. CONTENT

[0004] The utility model discloses a shopping center photovoltaic sunshade daylighting roof device, which solves the problem of high solar radiation of high area daylighting roof and high energy consumption of air conditioner caused by single function.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A shopping center photovoltaic sunshade daylighting roof device, comprising a frame, top daylighting and side daylighting, wherein the top daylighting is arranged on the top of the frame, the side daylighting is arranged on the outer side of the frame, the top daylighting and the side daylighting are both composed of a plurality of light transmission glass and a plurality of entity plates arranged alternately, and the plurality of entity plates of the side daylighting are movably connected with the frame through rotating shafts.

[0007] The light transmission glass is made of light transmission cadmium telluride double glass photovoltaic glass, and the entity plate is provided with a single crystal flexible photovoltaic module.

[0008] Preferably, the daylighting roof device area comprises a main entrance, a main atrium and a secondary atrium, the proportion of the light transmission glass to the entity plate of the main entrance is 60%-65%:35%-40%, and the entity plate pattern adopts large diamond or circular combination.

[0009] The proportion of the light transmission glass to the entity plate of the main atrium is 30%-40%:60%-70%, and the entity plate pattern adopts petal or wave shape.

[0010] The proportion of the light transmission glass to the entity plate of the secondary atrium is 50%-55%:45%-50%, and the entity plate pattern adopts line or small geometric pattern.

[0011] Preferably, the side light taking solid plate and the frame are movably connected by an electric push rod, and the front end of the electric push rod is movably connected with the solid plate, and the rear end of the electric push rod is movably connected with the frame.

[0012] Preferably, the solid plate is composed of an outer shell, an inner shell and heat insulation and sound absorption cotton.

[0013] Preferably, the outer shell and the inner shell are clamped with each other, and the heat insulation and sound absorption cotton is located between the outer shell and the inner shell.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model discloses a normal light taking is realized through light transmission glass, and the solid plate will block and reflect sunlight, so that part of sunlight will not enter the room, reduces heat radiation and indoor temperature, when the sunlight irradiation, through the arrangement of light transmission glass and solid plate, the beautiful light taking roof pattern can be formed, and the direct sunlight is reduced to the maximum extent, heat radiation and indoor temperature are controlled, the use comfort of personnel in the shopping center is improved, the monocrystalline flexible photovoltaic module can generate electricity when the solid plate is shaded, and the light transmission cadmium telluride double glass photovoltaic glass can meet the light taking demand and has certain power generation effect, so that the economic and environmental protection value is higher.

[0016] The utility model discloses a top light taking and side light taking combined mode, according to the need adjustment its light transmission glass and solid plate's virtual area, guarantee light taking effect's while improvement high area heat environment, can open with the rotation axis as the pivot to the solid plate of side light taking, thereby forming a natural smoke exhaust port, satisfies the fire control demand of natural smoke exhaust. ACCURATE DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without the creative labor, wherein:

[0018] Figure 1 It is the overall structure schematic diagram of the utility model;

[0019] Figure 2 It is the bottom view of the utility model;

[0020] Figure 3 It is the electric push rod local structure schematic diagram of the utility model;

[0021] Figure 4 It is the solid plate local structure schematic diagram of the utility model;

[0022] Figure 5 It is a single crystal flexible photovoltaic module structure schematic view of the utility model.

[0023] Figure 6 It is a light-transmitting cadmium telluride double-glass photovoltaic glass structure schematic view of the utility model.

[0024] In the drawing: 1, frame; 2, top light; 3, side light; 4, electric push rod; 5, light-transmitting glass; 501, front plate glass; 502, PVB adhesive film; 503, light-transmitting cadmium telluride power generation thin film; 504, PVB adhesive film; 505, back plate glass; 6, solid plate; 601, outer shell; 602, inner shell; 603, heat insulation and sound absorption cotton; 7, single crystal flexible photovoltaic module; 701, PET; 702, EVA; 703, solar wafer; 704, EVA; 705, TPT; 8, movable piece; 9, rotating shaft. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings of the specification.

[0026] In the following description, a lot of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from the description herein, and those skilled in the art can make similar generalization without departing from the connotation of the utility model, therefore the utility model is not limited by the specific embodiments disclosed below.

[0027] Secondly, "one embodiment" or "embodiment" referred to herein means that specific features, structures or characteristics can be included in at least one implementation of the utility model. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an independent or alternative embodiment excluding other embodiments.

[0028] As shown in the accompanying drawings Figure 1 , 2 and the accompanying drawings Figure 3 :

[0029] Embodiment one: the embodiment provides a shopping center photovoltaic sunshade daylighting roof device, including frame 1, top light 2 and side light 3;Top light 2 is arranged at the top of frame 1, and side light 3 is arranged at the outside of frame 1, and top light 2 and side light 3 are both composed of a plurality of light-transmitting glass 5 and a plurality of solid plates 6 staggered arrangement, and the plurality of solid plates 6 of side light 3 and frame 1 are movably connected through rotating shaft 9;

[0030] Light-transmitting glass 5 adopts light-transmitting cadmium telluride double-glass photovoltaic glass, and solid plate 6 is provided with single crystal flexible photovoltaic module 7.

[0031] When the device is in operation, sunlight will enter the room through the light-transmitting glass 5 to achieve normal lighting. The solid plate 6 will block and reflect sunlight, so that part of the sunlight will not enter the room, reducing heat radiation and indoor temperature. The device uses the virtual-real combination of light-transmitting glass 5 and solid plate 6 to arrange and form. When sunlight shines, the solid plate 6 will form a shadow at the corresponding position, and the light-transmitting glass 5 will form a bright light at the corresponding position. By controlling the arrangement of the light-transmitting glass 5 and the solid plate 6, an aesthetically pleasing lighting roof pattern can be formed, while minimizing direct sunlight and controlling heat radiation and indoor temperature, improving the comfort of people in the shopping center;

[0032] When sunlight shines, the device will perform top lighting through the light-transmitting glass 5 of the top lighting 2 and side lighting through the light-transmitting glass 5 of the side lighting 3. Top lighting will improve lighting effect and enhance indoor lighting brightness. Under the same area condition, the radiation of side lighting is much smaller than that of direct sunlight. By combining top lighting 2 and side lighting 3, and adjusting the virtual-real area of light-transmitting glass 5 and solid plate 6 as needed, the lighting effect is ensured while the high area heat environment is improved. The area ratio of solid plate 6 and light-transmitting glass 5 needs to be reasonably adjusted according to the lighting needs of different shopping center atriums. Under the same city area condition, the main atrium: the light environment is needed for the atrium activities, the proportion of solid plate 6 is controlled at 35%~40%; the secondary atrium: the secondary atrium concentrates a large number of shops, and the main customer waiting and walking area, with temperature control as the core, the proportion of solid plate 6 is controlled at 60%~70%; the entrance atrium: the entrance atrium is the customer entering area, and sufficient lighting is conducive to giving customers an open space experience, the proportion of solid plate 6 is controlled at 45%~50%. Adjust the proportion of solid plate 6 and light-transmitting glass 5 according to actual needs to meet the lighting needs while improving the heat environment and meeting the lighting needs of shopping plazas everywhere;

[0033] At the same time, personnel can rotate the solid plate 6 of the side lighting 3 around the rotating shaft 9 to open, thereby forming a natural smoke exhaust port to improve the smoke exhaust efficiency when a fire occurs and meet the fire safety requirements of natural smoke exhaust;

[0034] The monocrystalline flexible photovoltaic module 7 can be directly glued and installed on the solid plate 6, and can generate electricity when the solid plate 6 is working to block light, with high power generation efficiency. As shown in the accompanying Figure 5 The structure of the monocrystalline flexible photovoltaic module 7 from top to bottom is: PET 701, EVA 702, solar wafer 703, EVA 704, TPT 705;

[0035] The light-transmitting cadmium telluride double-glass photovoltaic glass is fixed by PVB adhesive film between two layers of glass, as shown in the accompanying Figure 6As shown, the light-transmitting cadmium telluride double-glass photovoltaic glass structure is composed of, from top to bottom, a front plate glass 501, a PVB adhesive film 502, a light-transmitting cadmium telluride thin film 503, a PVB adhesive film 504, and a back plate glass 505. The structure can meet the lighting requirements and has a certain power generation effect, and has higher economic and environmental value.

[0036] As shown in the accompanying drawings Figure 1 , 2 and the accompanying drawings Figure 3 :

[0037] Embodiment Two: The embodiment provides a shopping center photovoltaic sunshade daylighting roof device, which comprises a frame 1, a top daylighting 2 and a side daylighting 3. The top daylighting 2 is arranged on the top of the frame 1, and the side daylighting 3 is arranged on the outside of the frame 1. The top daylighting 2 and the side daylighting 3 are both composed of a plurality of light-transmitting glasses 5 and a plurality of solid plates 6 arranged alternately. The plurality of solid plates 6 of the side daylighting 3 are movably connected to the frame 1 through a rotating shaft 9.

[0038] The light-transmitting glass 5 is a light-transmitting cadmium telluride double-glass photovoltaic glass, and the solid plate 6 is provided with a single-crystal flexible photovoltaic module 7.

[0039] When the device is working, sunlight will enter the indoor through the light-transmitting glass 5 to realize normal lighting. The solid plate 6 will block and reflect sunlight, so that part of the sunlight will not enter the indoor, reducing heat radiation and indoor temperature. The device is arranged in a combination of light-transmitting glass 5 and solid plate 6. When sunlight shines, the corresponding position of the solid plate 6 will form a shadow, and the corresponding position of the light-transmitting glass 5 will form a bright light. By controlling the arrangement of the light-transmitting glass 5 and the solid plate 6, an attractive daylighting roof pattern can be formed, while the direct sunlight is reduced to the greatest extent, the heat radiation and indoor temperature are controlled, and the use comfort of the personnel in the shopping center is improved.

[0040] At the same time, personnel can rotate the solid plate 6 of the side daylighting 3 around the rotating shaft 9 to open it, thereby forming a natural smoke exhaust port to improve the smoke exhaust work when a fire occurs and meet the fire safety requirements of natural smoke exhaust.

[0041] The daylighting roof device area includes a main entrance, a main atrium and a secondary atrium. The proportion of the light-transmitting glass 5 to the solid plate 6 of the main entrance is 60% to 65%: 35% to 40%, and the pattern of the solid plate 6 adopts a large rhombus or a circular combination.

[0042] The main entrance is an important image display area of the building, with large flow of people and high lighting requirements. This design can ensure sufficient natural lighting, and through the reasonable distribution of the opaque decorative plate, a unique light and shadow effect is formed on the ground, enhancing the space sense and attractiveness of the entrance.

[0043] The ratio of the light-transmitting glass 5 to the solid plate 6 is 30%-40%:60%-70%, and the pattern of the solid plate 6 is petal-shaped or wavy;

[0044] The main atrium space is spacious and is the core public area inside the building, and has high requirements for lighting and heat insulation. This design can not only ensure sufficient lighting to meet the needs of plant growth and personnel activities in the atrium, but also effectively block excessive heat from entering the indoor in summer through a large proportion of opaque decorative plates, thereby reducing air conditioning energy consumption.

[0045] The ratio of the light-transmitting glass 5 to the solid plate 6 is 30%-40%:60%-70%, and the pattern of the solid plate 6 is petal-shaped or wavy;

[0046] The secondary atrium is relatively small in size compared to the main atrium, and is more focused on quiet leisure or small activity space in terms of function. Such a design can ensure a certain amount of lighting while providing better heat insulation effect and creating a comfortable indoor environment.

[0047] When sunlight shines, the device will perform top lighting through the light-transmitting glass 5 of the top lighting 2 and side lighting through the light-transmitting glass 5 of the side lighting 3. The top lighting will improve the lighting effect and increase the indoor lighting brightness. The side lighting has much smaller radiation than the top radiation under the same area condition. Through the combination of the top lighting 2 and the side lighting 3, the solid plate 6 and the light-transmitting glass 5 can be adjusted in terms of virtual and solid area according to the needs to ensure the lighting effect while improving the high area thermal environment. The area ratio of the solid plate 6 to the light-transmitting glass 5 needs to be reasonably adjusted according to the lighting needs of different shopping center atriums. Under the same city area condition, the ratio of the solid plate 6 to the light-transmitting glass 5 can be adjusted according to the actual needs to meet the lighting needs while improving the thermal environment and meeting the lighting needs of the shopping plaza.

[0048] Specifically, the electric push rod 4 is movably installed between the solid plate 6 and the frame 1 of the side lighting 3. The front end of the electric push rod 4 is movably connected to the solid plate 6, and the rear end of the electric push rod 4 is movably connected to the frame 1.

[0049] As shown in the accompanying drawings: Figure 4

[0050] Specifically, the solid plate 6 is composed of an outer shell 601, an inner shell 602, and heat-insulating and sound-absorbing cotton 603.

[0051] Specifically, the outer shell 601 and the inner shell 602 are mutually clamped, and the heat-insulating and sound-absorbing cotton 603 is located between the outer shell 601 and the inner shell 602.

[0052] As can be seen from the above, when a fire occurs, the staff can control the electric push rod 4 to work by using the master control end. The electric push rod 4 will push the solid plate 6 to automatically rotate around the rotating shaft 9 and open, thereby realizing automatic opening of smoke exhaust.​

[0053] The heat-insulating and sound-absorbing cotton 603 has good heat-insulating and sound-insulating performance, and improves the sun-shading and heat-insulating performance of the solid plate 6.

[0054] Application example: Location: a city in southern China (annual solar radiation about 1,500 kWh / m 2 ).

[0055] Building type: main atrium of commercial complex.

[0056] Size of light roof: 30 m x 30 m (top area 900 m 2 ), side light height 8 m (circumference 120 m, side light area 960 m 2 ).

[0057] Design parameters:

[0058] Main atrium: solid plate ratio 35% (315 m 2 ), transparent glass ratio 65% (585 m 2 );

[0059] Side light: solid plate ratio 60% (576 m 2 ), transparent glass ratio 40% (384 m 2 ).

[0060] Lighting effect analysis

[0061] Natural lighting coefficient

[0062] Transparent glass transmittance: cadmium telluride double-glass photovoltaic glass transmittance about 30%;

[0063] Effective lighting area: top transparent glass 585 m 2 x 30% + side transparent glass 384 m 2 x 30% = 288 m 2 ;

[0064] Lighting coefficient = effective lighting area / indoor floor area ≈ 288 m 2 / (900 m 2 x 3) ≈ 10.7%

[0065] (Note: the indoor floor area is estimated according to 3 times the atrium projection area, which meets the commercial building standard).

[0066] Illuminance distribution

[0067] Top light: uniform illuminance about 500-800 lux (satisfies the atrium activity requirement);

[0068] Side light: supplementary diffuse light, reduces top direct glare, and improves high area thermal environment.

[0069] Thermal insulation effect analysis

[0070] Thermal radiation blocking

[0071] Reflectivity of solid plate (including photovoltaic module): about 70%;

[0072] Total thermal radiation reduction = solid plate area × solar radiation intensity × reflectivity

[0073] = (315m 2 + 576m 2 ) × 1,000 W / m 2 × 0.7 ≈ 623.7 kW;

[0074] Summer air conditioning load is reduced by about 30%-40% (compared with traditional all-glass daylighting roof).

[0075] Temperature control

[0076] Actual measurement data: in summer at noon, the indoor temperature of the traditional glass roof is about 35℃, and the device can be reduced to 28-30℃ (combined with natural ventilation).

[0077] Annual power generation evaluation

[0078]

[0079]

[0080] Economic benefits: according to the electricity price of 1.0 yuan / kWh, the annual electricity bill is saved by about 384,000 yuan.

[0081] Environmental benefits: reduce carbon dioxide emissions by about 270 tons / year (according to the carbon emission coefficient of thermal power 0.7 kg / kWh).

[0082] Additional functions

[0083] Natural smoke exhaust

[0084] The side daylighting solid plate can be rotated to open (the maximum opening angle is 90°), forming a smoke exhaust port of 960m 2 × 60% = 576m 2 , meeting the requirements of fire safety standards.

[0085] Patterned design

[0086] The top solid plate is arranged in "wavy lines", and the side is arranged in "vertical stripes", combined with light and shadow effect, to improve the beauty of the building.

[0087] Summary

[0088] The device realizes the following functions in the main atrium through the integrated design of "photovoltaic + shading + daylighting":

[0089] Daylighting coefficient 10.7% (satisfy the needs of commercial activities); indoor temperature reduction of 5-7℃ in summer; about 384,000 degrees of electricity generated per year (covering 20% of building energy consumption); natural smoke exhaust area up to standard; suitable for large commercial complexes, transportation hubs and other high energy consumption scenarios, with functionality, economy and environmental protection.

[0090] Importantly, it should be noted that the constructions and arrangements of the present application shown in the various different exemplary embodiments are merely illustrative. While only a few embodiments have been described in detail in this disclosure, persons of ordinary skill in the art having benefit of this disclosure will readily comprehend that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, parameters values (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be modified or changed. Accordingly, all such modifications are intended to be included within the scope of the present inventive subject matter. The order or sequence of any process or method steps can be varied or re-sequenced without materially affecting the application. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functions and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present inventive subject matter. Accordingly, the present inventive subject matter is not limited to particular embodiments described, but extends to any inventive subject matter that would still fall within the scope of the claims had such claims to be appended hereto.

[0091] Also, to provide a concise description of the exemplary embodiments, not all features of an actual implementation can be described (i.e., those related to the best mode for carrying out the present inventive subject matter, or those which, although related to the present inventive subject matter, are not needed for an understanding of the present inventive subject matter).

[0092] It should be understood that numerous specific implementations can be made within the scope of the present inventive subject matter, and that any such implementations that are or can be made will not depart from the scope of the inventive subject matter. Accordingly, the present inventive subject matter is not limited to particular embodiments described, but extends to any inventive subject matter that would still fall within the scope of the claims had such claims to be appended hereto.

[0093] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A shopping center photovoltaic sunshade daylighting roof device, characterized in that: Frame (1), top lighting (2) and side lighting (3) are included. The top lighting (2) is arranged on the top of the frame (1), and the side lighting (3) is arranged on the outside of the frame (1). The top lighting (2) and the side lighting (3) are both composed of a plurality of light-transmitting glass (5) and a plurality of solid plates (6) arranged alternately. The plurality of solid plates (6) of the side lighting (3) are movably connected with the frame (1) through a rotating shaft (9). The light-transmitting glass (5) is a light-transmitting cadmium telluride double-glass photovoltaic glass, and the solid plate (6) is provided with a single-crystal flexible photovoltaic module (7).

2. A shopping center photovoltaic sunshade daylighting roof device according to claim 1, characterized in that: The lighting roof device area includes a main entrance, a main atrium and a secondary atrium. The proportion of the light-transmitting glass (5) to the solid plate (6) in the main entrance is 60%-65%: 35%-40%, and the pattern of the solid plate (6) is a large rhombus or a circle. The proportion of the light-transmitting glass (5) to the solid plate (6) in the main atrium is 30%-40%: 60%-70%, and the pattern of the solid plate (6) is a petal or a wave. The proportion of the light-transmitting glass (5) to the solid plate (6) in the secondary atrium is 50%-55%: 45%-50%, and the pattern of the solid plate (6) is a line or a small geometric pattern.

3. A shopping center photovoltaic sunshade daylighting roof device according to claim 1, characterized in that: The electric push rod (4) is movably arranged between the solid plate (6) and the frame (1) of the side lighting (3). The front end of the electric push rod (4) is movably connected with the solid plate (6) through a movable piece (8), and the rear end of the electric push rod (4) is movably connected with the frame (1) through the movable piece (8).

4. A shopping center photovoltaic sunshade daylighting roof device according to claim 1, characterized in that: The solid plate (6) is composed of an outer shell (601), an inner shell (602) and heat insulation and sound absorption cotton (603).

5. A shopping center photovoltaic sunshade daylighting roof device according to claim 4, characterized in that: The outer shell (601) and the inner shell (602) are clamped with each other, and the heat insulation and sound absorption cotton (603) is located between the outer shell (601) and the inner shell (602).

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