KR100799520B1 - Bifacial photovoltaic solar energy apparatus - Google Patents

Abstract

A bifacial photovoltaic solar energy apparatus is provided to receive solar light under an optimum condition by improving the structure of a reflector and prevent increase of load of a solar tracking system by minimizing the weight of the reflector. A bifacial photovoltaic solar energy apparatus includes a double-sided solar energy unit(30), a first reflector(40), and a second reflector(50). The double-sided solar energy unit has a front surface and a rear surface for receiving solar light, and is inclined in one direction by 40 to 50 degrees. The first reflector is arranged at the right side of the double-sided solar energy unit, and inclined by 85 to 95 degrees from the double-sided solar energy unit. The first reflector is arranged to reflect solar light to the front surface of the double-sided solar energy unit. The second reflector is spaced apart from the left side of the double-sided solar energy unit, and inclined by 40 to 50 degrees in the direction opposite to the first reflector such that the second reflector reflects solar light to the rear surface of the double-sides solar energy unit.

Description

Bilateral photovoltaic solar energy apparatus

1 is a three-dimensional view showing a double-sided light receiving solar energy device according to the present invention.

2 is a front view of FIG. 1;

3 is a plan view of FIG.

4 is a side view of FIG. 1;

5 is a view showing a state of use of the double-sided light-receiving solar energy device according to the present invention.

6 is a view showing another embodiment of the double-sided light receiving solar energy device according to the present invention.

FIG. 7 is a partial detailed view illustrating an “A” portion of FIG. 1; FIG.

Figure 8 is a partial detail view taken from the "B" portion of FIG.

9 is a partial detailed view taken from the "C" portion of Figure 1;

FIG. 10 is a partial detailed view illustrating an “D” portion of FIG. 1. FIG.

FIG. 11 is a partial detailed view of an “E” portion of FIG. 1;

12 is a front view showing a general solar energy device and the first reflecting plate according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

30: double-sided light receiving type solar energy device 40: the first reflecting plate

50: second reflection plate

The present invention relates to a solar energy device, and more particularly, to a double-sided light receiving type solar energy device that can receive solar energy from both sides.

Countries around the world are speeding up the development of renewable energy technologies to prevent fossil energy depletion, soaring prices and global warming. However, despite these efforts, solar energy is low in density, intermittent, and has a disadvantage of low efficiency due to the limitations of the material characteristics and technology of solar energy devices.

Most of the collectors generally used to obtain heat for living or industrial processes can be divided into flat collectors and vacuum collectors. The electrons transfer heat energy from the sun to the heat exchanger, and the vacuum collectors are divided into two types of single glass. There are Glass-Metal type of vacuum tube and Glass-Glass type of double glass vacuum collector tube. Recently, bifacial Photovoltaic Solar Module which can receive light on both sides like vacuum collector has appeared, but it does not have the same inclination as general latitude. In the vertical installation, the output is almost the same as in the conventional method.

These devices are used in considerable amounts to obtain a lot of energy, it is difficult to disseminate the installation cost and occupy a lot of installation space. Various techniques have been tried to overcome this. As a method of increasing solar energy in solar energy devices, the solar tracking system is essentially a kind of parabolic PTC (Parabolic Throw Solar Collector), which simultaneously tracks the altitude and orientation from the solar altitude to track solar altitude. Like the Dish type used, there are solar energy devices that have a concentration ratio of several thousand times.

In addition to sun tracking, the use of light reflection as a condensing technique is typically a mirror, and the use of refraction is a Prasnel lens, but this has disappeared from practical use due to the volume increase of the system about 10 years ago and is now seen only in the laboratory.

However, increasing the amount of solar energy and injecting it into a solar energy device does not produce much energy at all. For example, in the case of an evacuated tube collector, the allowable temperature varies and maintaining the degree of vacuum is very important. This is because glass and metal are bonded and connected, so too much solar energy has a different coefficient of thermal expansion over time, which makes it impossible to properly maintain the degree of vacuum resulting from thermal deformation or thermal resistance, thereby degrading performance and durability.

And no matter how strong the solar light incident on the solar cell module in general photovoltaic power generation is only about twice as effective compared to the daily output. In the experiment conducted by the present inventors in the industry-academic cooperation, this is 1.8 times the output of 1.8 times by injecting 3 ~ 6 times the sunlight from the fixed type without receiving the light about 1.5 hours a day due to the geographic disturbance of the experimental place during the sunrise mole. In case of receiving light without obstacle, it is estimated that there will be more than 2 times more power.

The main component of solar cell is silicon, and EVA (Ethylene Vinyl Acetate) is used for manufacturing solar cell module. In case of Cheoncheon-il in summer in Korea, when it collects more than 3 times, it generates excessive heat and outputs according to the amount of sunlight received. Not only can we expect the benefits, but EVA melts at about 180 degrees Celsius and compresses the solar cells to form them. By causing the electricity to be produced at all, the most economical and most appropriate amount of solar light received in photovoltaic power generation is around three times that of a fixed type.

Although the ideal solar radiation is about three times the ideal, it is possible to vary the shape of the reflector to a parabolic or semi-cylindrical or other arbitrary geometric and optical shape, but these are difficult to manufacture, the complexity of the structure, Economic efficiency decreases due to weight, volume increase and installation cost.

Therefore, the technical problem to be achieved by the present invention is to provide a double-sided light-receiving solar energy device that can receive the solar energy from both sides to obtain the maximum solar energy with a minimum installation area.

In addition, the present invention is to provide a double-sided light-receiving solar energy device to improve the structure of the reflecting plate to allow the optimal sunlight to enter the double-sided light-receiving solar energy device.

In addition, the present invention is to provide a double-sided light-receiving solar energy device to minimize the weight of the reflector so that the load on the solar tracking system is not increased, and to fold the reflector to facilitate the preparation and repair of strong winds.

On the other hand, in order to implement the above-mentioned general matters, the inventors registered the registration number 483291 (solar position tracking control method of solar-related facilities) to the Patent Office filed on Jan. 4, 2001 and filed on Apr. 4, 2005. received.

The present invention for achieving the above object is a solar energy device used in a solar tracking system, the front and rear surfaces are manufactured to have a light-receiving function and installed in a state inclined 40 ° ~ 50 ° in one direction on a vertical line Located on the right side of the light-receiving solar energy device 30 and the double-sided light-receiving solar energy device 30 is installed in an inclined state between the two-sided light-receiving solar energy device 30 and 85˚ ~ 95˚. Located on the left side of the first reflecting plate 40 and the double-sided light-receiving solar energy device 30 to reflect the sunlight to the front of the double-sided light-receiving solar energy device 30, the double-sided light-receiving sun 40 ° to 50 ° inclined in a direction opposite to the first reflecting plate in one direction on the same vertical line as the energy device 30 so as to direct sunlight to the rear of the two-sided light receiving type positive energy device 30. It comprises a second reflecting plate 50 to reflect.

The inclination of the double-sided light-receiving solar energy device 30 preferably has an inclination angle of 45 ° in one direction on a vertical line.

The angle formed by the first reflective plate 40 and the double-sided light-receiving solar energy device, or the angle formed by the extension lines thereof, may be perpendicular to each other.

It is preferable that the inclination of the second reflecting plate 50 is installed in parallel with the double-sided light receiving energy device 30.

The first and second reflector plates 40 and 50 may be formed of a flat mirror and a synthetic resin plate attached to the rear surface of the flat mirror with an adhesive.

It is preferable to use one of the phenol resin forming material plate and the vinyl fluoride resin forming material as the synthetic resin plate.

Horizontal and vertical frames forming a rectangular frame are installed on the bottom surfaces of the double-sided light receiving type solar energy device 30 and the first and second reflecting plates 40 and 50, and the first and second frames are formed on both sides of the horizontal frame 10. The lower end of the reflector plate 40, 50 is characterized in that the fastening by a hinge.

The double-sided light-receiving solar energy device and the first and second reflecting plates may be configured by binding to each other using a plurality of wire ropes.

That is, the double-sided light receiving type solar energy device to be presented in the present invention is configured to receive solar energy from both sides to obtain a much larger amount of solar energy than the conventional solar energy device that receives only one side, and also the sun By improving the structure of the reflector for injecting solar light into the energy device, the technical point is to have a relatively inexpensive and excellent reflectivity, and to reduce the weight of the reflector so that the load on the solar tracking system is not increased.

On the other hand, prior to describing the embodiment of the present invention, briefly defining the symbols indicated in the drawings, first, "L" means the length of the solar energy device or the first and second reflector, "W" is a double-sided light receiving type It means the width of solar energy equipment and reflector. In addition, "S" is sunlight and "N" means normal.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 4 are three-dimensional views of a double-sided light receiving solar energy device to be implemented in the present invention.

As shown, the double-sided light receiving type solar energy device is provided with a horizontal and vertical frame (10, 20) to the bottom surface. The horizontal and vertical frames 10 and 20 form a rectangular frame and support the components of the double-sided light-receiving solar energy device of the present invention, that is, the double-sided light-receiving solar device 30 and the first and second reflecting plates 40 and 50. .

On both the horizontal and vertical molds 10 and 20, a double-sided light receiving type solar energy device 30 is installed in a state inclined at 40 ° to 50 °, preferably 45 ° in one direction (left direction in the drawing). do. The double-sided light-receiving solar energy device 30 (hereinafter referred to as a solar energy device) receives electricity directly (primary) or indirectly (secondarily) through the first and second reflecting plates 40 and 50. Refers to a device for producing energy, thermal energy, and other energy, and the description of the solar energy device 30 is already known, and thus the detailed description thereof will be omitted. On the other hand, the solar energy device 30 refers to a solar cell / solar cell module having a front and rear light receiving function in the case of photovoltaic power generation, vacuum collector tube having a light receiving function in the front and rear when using solar heat ( Evacuated Tube Collectors) are vacuum collectors or flat plate collectors with regular shapes arranged in a plurality.

On the horizontal and vertical molds 10 and 20, the upper support pillar 32 of the solar energy device is installed vertically, and the tip of the upper support pillar 32 of the solar energy device is the upper part of the solar energy device 30. It is coupled to both sides of the surface to support the solar energy device 30 inclined at 45 °.

Meanwhile, two first and second reflecting plates 40 and 50 are positioned at both sides of the solar energy device 30. The first and second reflector plates 40 and 50 are means for transmitting sunlight to the front and rear surfaces of the solar energy device 30.

The first reflecting plate 40 is located on the right side of the solar energy device 30 and installed in an inclined state at a right angle with the solar energy device 40 to receive sunlight directly (primaryly) to use the reflective properties of light. It is a means for reflecting light indirectly (secondary) to one surface (front) of the solar energy device (30).

The second reflector 50 is positioned at a distance away from the left side of the solar energy device 30 and is in a vertical range of 40 ° to 50 °, preferably 45 ° to be parallel to the inclination of the solar device 30. It is installed in an inclined state so as to receive sunlight directly (primary) and transmit light indirectly (secondarily) to the back of the solar energy device 30 by using the reflective properties of light.

On the other hand, the first reflecting plate (40, 50) presented in the present invention can be made of a variety of materials, in the present invention, as shown in Figure 2 attached to the flat mirror 44, the rear surface of the flat mirror (44) Most preferably, the synthetic resin plate 48 is attached and fixed with an adhesive 46. As the adhesive 46, an elastic silicone adhesive or a polyvinyl butyral film, which is an organic adhesive film, is preferably used. In addition, the synthetic resin plate 48 has a specific gravity less than that of glass, and it is preferable to use a phenolic resin forming material plate or a vinyl fluoride resin (PVF resins) forming material plate which is excellent in terms of heat, weight, strength and price. The first reflecting plate 40 manufactured with the above-described structure can reduce the weight of the reflecting plate as compared to the prior art, so that the load on the solar tracking system (not shown) to which the double-sided light receiving solar device of the present invention is installed is increased. You can minimize it. On the other hand, the second reflector 50 is also preferably made of the same material as the first reflector 40 mentioned.

In the double-sided light receiving type solar energy device of the present invention configured as described above, the solar energy device 30 directly emits sunlight in a state in which both sides of the solar energy device 30 are configured to receive light, as shown in FIG. 5. In addition to receiving, by indirectly receiving sunlight from both sides (front and back) through the first and second reflecting plates 40 and 50 located on both sides, a much larger amount of solar energy is obtained than in conventional one-way solar energy devices. It becomes possible. In this case, the angles of the solar energy device 30 and the first and second reflecting plates 40 and 50 may be installed by being inclined in the opposite direction as shown in FIG. 6.

Meanwhile, the solar energy device 30 and the first and second reflecting plates 40 and 50 are bound to a plurality of wire ropes 70, 74, 84, and 90 to maintain a tilted angle at a predetermined angle without collapsing with each other. Done. In this case, the structure for binding the solar energy device 30 and the first and second reflecting plates 40 and 50 to the wire ropes 70, 74, 84, and 90 will be easily understood through FIGS. 8 to 11. .

FIG. 7 is a view illustrating in detail the coupling structure of the horizontal frame, the solar energy device, and the first reflecting plate by extracting part “A” of FIG. 1.

Reference numeral 30a shown in FIG. 7 denotes a solar energy device template, and the solar energy device template 30a is a means for protecting and supporting the solar energy device 30 by being installed on the outer surface of the solar energy device 30. .

Reference numeral 40a denotes a first reflecting plate template, wherein the first reflecting plate template 40a is installed on an outer surface of the first reflecting plate 40 to protect and support the first reflecting plate 40, and 50a denotes a second reflecting plate. As the mold, the second reflector plate 50a is installed on the outer surface of the second reflector plate 50 to protect and support the first reflector plate 40.

Reference numeral 42 is a hinge, the hinge 42 is installed through the horizontal mold 10 and the first reflecting plate mold 40a to function as a central axis of rotation so that the first reflecting plate 40 can rotate. Do this.

Reference numeral 66 denotes a turnbuckle, the turnbuckle 66 is one end is fastened to the eye 62 and the sackle 64 is installed in the horizontal frame 10, the other end is formed on one end of the wire rope 70 It is fastened to the knot portion 70a to adjust the tension of the wire rope 70. At this time, the knot part 70a of the wire rope 70 is fastened with a clip 68 so that the knot part 70a is not loosened in use.

Attached FIG. 8 is an excerpt of the portion “B” of FIG. 1, and as shown, the other end of the wire rope 70 fastened to the turnbuckle 66 forms a knot 70b, and the knot. The shackle 71 is fastened to the part 70b, and then the shackle 71 is fastened to the eye 72 formed at the upper end of the mold 40a for the first reflecting plate, so that the horizontal mold 10 and the first reflecting plate are fastened. It is configured by connecting the mold 40a with the wire rope 70.

Meanwhile, the knot portion 74a formed at one end of another wire rope 74 is fastened to the eye 72 using the shackle 75, and the knot portion 74b at the other end of the wire rope 74 is fastened. 9 and 11, through the pulley 77 installed in the solar energy device mold (30a) through the upper support pillar 32 of the solar energy device through the turnbuckle 76, the turnbuckle ( The other end of the 76 is fastened to the eye 80 and the shackle 78 of the horizontal mold 10 so as to form a connection. Through the wire rope 74, the solar energy device mold 30a and the first reflective plate mold 40a are bound to each other. The fender 82 having a predetermined elasticity is installed in the solar energy device mold 30a, and the first reflector 40 is folded around the hinge 42. At this time, the impact generated during the collision with the solar energy device 30 is to be alleviated.

On the other hand, another pulley 83 is installed on the upper support pillar 32 of the solar energy device, and the pulley 83 is the upper support pillar 32 of the solar energy device and the mold 50a for the second reflecting plate. ) Is passed through the wire rope (84). That is, one end of the wire rope 84 forms a knot portion 84a, and then connects the knot portion 84a to the eye 85 provided in the second reflecting plate mold 84 (Fig. 10). The other end of the wire rope 84 passes through the pulley 83 in the state where the knot portion 84b is formed (see FIG. 9), passes the upper support pillar 32 of the solar energy device, and then turns the turnbuckle ( 86) (see FIG. 10), and the other end of the turnbuckle 86 is fastened to the eye 80 and the shackle 88 of the horizontal mold 10 so as to form a connection, and thus the second reflector mold 50a ) And the upper support pillar 32 of the solar energy device is configured to be connected to each other through the wire rope 84.

Meanwhile, as shown in FIG. 10, one end of another wire rope 90 is fastened through the knot portion 90a to the eye 85 installed in the mold 50a for the second reflecting plate. The other end of the 90 is connected to the turnbuckle 92 in a state where the knot 90a is formed as shown in FIG. 11, and the other end of the turnbuckle 92 is connected to the eye 80 of the horizontal mold 10. By fastening with the shackle 94 to bind the second reflecting plate mold 50a and the horizontal mold 10 to each other. Here, the hinge 96 is fastened to a contact portion between the second reflecting plate mold 50a and the horizontal mold 10 so that the second reflecting plate mold 50a can rotate about the hinge 96. This is preferred.

12 is a view showing another embodiment of a device that does not require a second reflector when using a general solar energy device capable of receiving only one surface instead of the double-sided light receiving solar device 30 according to the present invention.

As shown, even if the double-sided light-receiving solar energy device 30 is replaced with a general solar energy device, such a device, together with the first reflector, receives more solar energy than the solar energy obtained by the general solar energy device in the fixed solar energy system. You can get it.

 Furthermore, in the structure in which the double-sided light receiving type solar energy device 30 and the first and second reflecting plates 40 and 50 are installed, or in the structure having only the general solar energy device capable of receiving only one side and the first reflecting plate, the horizontal / vertical frame 10, 20) It has the same effect even when rotated at an arbitrary angle in the transverse direction or the horizontal frame 10 is installed in the upper direction or any point within this, that is, in the X-axis direction with reference to FIG. Since the effects of the first and second reflecting plates 40 and 50 are not reduced, the same effect is obtained even when the respective parallel movements in the horizontal frame 10, that is, the parallel movements in the X-axis direction with reference to FIG. Consider the same device.

As described above, the present invention achieves many effects as follows.

First, the present invention has the effect of obtaining the maximum solar energy with a minimum installation area by allowing the solar energy to be received from both sides.

In addition, the structure of the reflector can be improved to inject optimal sunlight into the solar energy device, and the weight of the reflector can be minimized to prevent an increase in load on the solar tracking system.

The present invention having the above-described effects can contribute to future energy independence, and in the fierce competition for the development of new and renewable energy technology, it is necessary to reduce carbon dioxide in order to maintain globalization as well as to prevent global warming after the Kyoto Protocol enters into force. Can cope actively. Furthermore, the economic effect on other industries can reduce foreign currency outflow by increasing employment creation and using less raw and subsidiary materials of solar energy devices, which are almost dependent on imports.

Claims (8)

In the solar energy device used in the solar tracking system, A double-sided light-receiving solar energy device which is manufactured to have a light receiving function on the front and rear sides and is installed in a state in which 40˚-50˚ is tilted in one direction on a vertical line; Located on the right side of the double-sided light-receiving solar energy device and installed in an inclined state between the two-sided light-receiving solar energy device and between 85˚ ~ 95˚ to reflect the sunlight to the front of the double-sided light receiving solar energy device 1 reflector and; Located at a certain distance to the left side of the double-sided light-receiving solar energy device and installed in a state inclined 40˚ ~ 50˚ in the opposite direction to the first reflecting plate in one direction on the same vertical line as the double-sided light-receiving solar energy device. A double-sided light-receiving solar energy device comprising a second reflector for reflecting light to the back of the two-sided light-receiving solar energy device. The method of claim 1, The inclination of the double-sided light-receiving solar energy device has an inclination angle of 40 ° to 50 ° in one direction on a vertical line, and the inclination of the first reflection plate and the second reflection plate in each direction is 40 ° to 50 ° in one direction on a vertical line. Double-sided light receiving type solar energy device characterized in that it has an inclination angle between. The method according to claim 1 or 2, The first reflecting plate is a double-sided light-receiving solar energy device, characterized in that consisting of a flat mirror, a synthetic resin plate attached to the back of the flat mirror with an adhesive. The method of claim 3, wherein Wherein said synthetic resin plate is one of a phenolic resin forming material plate and a vinyl fluoride resin forming material plate. The method of claim 1, Horizontal and vertical frames forming a square frame are installed on the bottom surfaces of the double-sided light receiving solar device and the first and second reflecting plates, and the lower ends of the first and second reflecting plates are fastened by hinges on both sides of the horizontal frame. Two-sided light receiving type solar energy device. The method of claim 5, And the double-sided light-receiving solar energy device and the first and second reflecting plates are configured by binding each other using a plurality of wire ropes. delete delete

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