WO2013105700A1

WO2013105700A1 - Solar power generator which is to float on water surface

Info

Publication number: WO2013105700A1
Application number: PCT/KR2012/002068
Authority: WO
Inventors: 우도영
Original assignee: Woo Do Young
Priority date: 2012-01-11
Filing date: 2012-03-22
Publication date: 2013-07-18
Also published as: KR20130082342A; KR101390068B1

Abstract

The present invention relates to a solar power generator which is to float on the surface of the water, and which comprises: a waterborne assembly installed so as to be capable of floating on the surface of the water; a solar cell module fixed on the waterborne assembly and converting incident light energy from the sun into electrical energy; a pumping motor mounted on the waterborne assembly, for pumping water from the water tank; a transfer tube connected to the pumping motor, for guiding water pumped from the pumping motor to the vicinity of the solar cell module by means of water pressure; and a water spout portion, installed so as to be in communication with the transfer tube and having a nozzle, for washing off or cooling the surface of the solar cell module. Accordingly, the present invention cools the solar cell module using cooled water such that not only can the cooling and generation efficiency of the solar cell module be improved, but the service life of the solar cell module can be maintained by preventing a decrease in output resulting from deterioration. Also, because surface contamination and snow amassed on the solar cell module can be effectively washed off, solar power generation efficiency can be improved.

Description

Sleep floating solar power device

The present invention relates to a surface-floating photovoltaic device, and more particularly, to a surface-floating photovoltaic device capable of generating electricity from light energy incident upon floating on the surface of the water.

In general, the photovoltaic power generation refers to a power generation method that converts sunlight directly into electric power by a solar cell.

In other words, the solar power generation is different from the solar power generation that receives energy from the sun and generates energy by using heat, and thus, electricity is directly generated in a solar cell made of a semiconductor material under the sunlight.

In particular, the surface-floating photovoltaic device is a solar cell module having a floating body at the bottom and a plurality of solar cells connected to each other on the water structure to convert light energy incident from the sun into electrical energy ( Solar Cell Module).

However, when the solar cell module rises to about 25 ° C. or more due to hot solar heat, the resistance value of the current flowing therein becomes large and power is lost, thereby reducing power generation efficiency and decreasing output due to deterioration. There is a problem that the life is shortened.

In addition, since the solar cell module is always exposed to the outside, when the surface is blocked by snow falling along with surface contamination by scattering dust, yellow dust, algae secretion, acid rain, etc., the incident rate of light energy is greatly reduced, thereby generating power generation efficiency. There is a problem of this sharp decline.

On the other hand, since the water phase is greatly affected by the algae and the wind direction, the fastening structure between the floating body and the water structure is required to be robust.

In other words, the surface-floating solar power generator is a facility that generates electricity by using solar light in the sea. The power plant suffers huge losses.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a surface-floating photovoltaic device capable of maximizing power generation efficiency by efficiently cooling and washing a solar cell module.

In addition, another object of the present invention is to provide a surface-floating photovoltaic device including a floating body that can firmly support the waterborne structure.

Sleep floating solar cell apparatus according to an aspect of the present invention to achieve the above object,

A floating structure which is floatably mounted on the water surface; A solar cell module fixed on the water structure to convert light energy incident from the sun into electrical energy; A pumping motor mounted on the water structure to pump water from the tank; A transfer pipe connected to the pumping motor for guiding water pumped from the pumping motor to the vicinity of the solar cell module by water pressure; And a water jet unit installed in communication with the transfer pipe and provided with a nozzle to wash or cool the surface of the solar cell module.

Here, the present invention,

The solar cell module is characterized in that it further comprises a movable portion for rotating the position of the water structure according to the orbit of the sun.

In addition, the movable part,

It characterized in that it comprises a fixed shaft that is vertically penetrated fixed to the water structure and the water tank, the bearing is provided between the water structure and the circumferential surface of the fixed shaft rotatably provided.

In addition, the movable part,

A drive motor installed on the ground to provide power, a roller installed on a rotation shaft of the drive motor, a fixed bar fixed to the water structure, and one end of which is wound on the roller and the other end of which is wound on the fixed bar. It characterized in that it comprises a fixed wire.

In addition, the present invention,

And a cooling unit including a pipe installed inside the wall of the water tank and a cooling main body for circulating a refrigerant through the pipe.

In the tank,

Characterized in that the partition is provided on the bottom to partition the stored water in and out.

In addition, the partition wall,

Communication holes for communicating the inside and outside of the water tank is formed, characterized in that the electric filter unit for filtering and supplying the water of the outside on the communication hole is characterized in that it is provided.

In addition, on the transfer pipe,

At least one three-way valve is installed to switch the flow path when the pumping motor is not running to discharge the water in the transfer pipe to the outside.

In addition, the water jet unit,

It is characterized in that the standing up so as to stretch.

In addition, the water jet unit,

A first communication tube having one end communicating with the transfer tube, and a second communication tube having the nozzle disposed at an upper end thereof and receivably arranged at an inner side of the first communication tube to extend hydraulically or electrically. do.

In the lower portion of the water structure,

It is characterized in that a plurality of floating body is installed so as to float on the water surface of the tank.

The float is,

Cylindrical buoyancy material;

A curved portion contacting the upper outer circumferential surface of the buoyancy material, a flat portion integrally installed on the upper side of the curved portion and in contact with the lower surface of the water plate, and extending outwardly from both sides of the flat portion to form the curved portion and the jaw. A support having a pair of extensions; And

A fastening portion having an intermediate portion wound on a lower outer circumferential surface of the buoyancy portion and having both ends corresponding to the jaws of the respective extension portions to fix the buoyancy portion to the support;

Characterized in that it comprises a.

Both ends of the fastener,

It is bent at the jaws of each of the extension portion is characterized in that the bolt is fastened to the water structure with the extension portion therebetween.

The fastener is,

Characterized in that the metal sheet of a metal material having a predetermined width.

In the buoyancy material,

It is characterized in that the curved tube for communicating the inside and the outside is installed through.

As described above, according to the water-floating solar cell apparatus according to the present invention, by cooling the solar cell module using the cooled water, not only can the cooling and power generation efficiency of the solar cell module be improved, but also the output decrease due to deterioration. It can be prevented to maintain the life of the solar cell module.

In addition, it is possible to effectively clean the surface contamination and accumulated snow of the solar cell module it is possible to improve the photovoltaic power generation efficiency.

In addition, the buoyant having a cylindrical shape can be firmly supported on the lower surface of the water structure of the planar structure, it is possible to safely operate various facilities installed on the upper surface of the water structure.

1 is a perspective view showing a surface floating solar cell apparatus according to an embodiment of the present invention,

2 is a cross-sectional view taken along the line II-II of FIG. 1;

3 is a plan view of FIG. 1 of FIG. 1;

4 is a view showing the floating body of FIG.

5 is an enlarged view illustrating main parts of FIG. 4;

6 is an enlarged view of a portion 'A' of FIG. 1;

Figure 7 is a cross-sectional view showing a surface-mounted photovoltaic device according to another embodiment of the present invention, and

8 is a cross-sectional view showing a surface floating solar cell apparatus according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings looks at in detail with respect to the surface-floating photovoltaic device according to an embodiment of the present invention.

Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their invention in the best way possible. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the configuration shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all of the technical idea of the present invention, these can be replaced at the time of the present application It should be understood that there may be various equivalents and variations.

As shown in FIGS. 1 to 3, the surface-floating photovoltaic device according to an embodiment of the present invention includes a water tank 100, an aqueous phase structure 200, a solar cell module 300, and a pumping motor ( 400, and a transfer pipe 500 and a water jet part 600.

Here, the water tank 100 is to dig the ground or installed on the ground to accommodate a certain amount of water, the water supply line 120 for supplying water, the drainage line 130 and the bottom for draining water The sediment discharge line 140 for discharging the deposits accumulated at irregular intervals is provided.

In particular, the water tank 100 is provided with a partition wall 110 that stands on its bottom to partition the stored water in and out.

In addition, the partition 110 has a communication hole 111 for communicating the inner and outer water is formed, the electric filter unit 115 for filtering the outside water on the communication hole 111 to supply the inside. Is preferred.

As a result, the cleaning of the solar cell module 300 may be performed by pumping clean water.

Here, the discharge line 140 may be installed on the bottom of the tank 100 outside the partition 110 as well as the bottom of the tank 100 inside the partition 110 as shown.

In addition, the water structure 200 may be provided with a plurality of floating body 210 in the lower portion so as to be floated on the water surface of the tank (100). In addition, the water structure 200 may be variously changed, such as oval, polygon, in addition to the circle shown as a plate shape, it is not limited to a specific shape.

Here, the floating body 210, as shown in Figures 4 and 5, the cylindrical buoyancy material 211, the support 212 and the buoyancy material 211 which is placed on the upper side of the buoyancy material 211. And a fastener 213 which integrally fastens the support 212.

First, the buoyancy material 211 is injected as a thermoplastic resin material, such as PE, PP, and both ends are attached to the cover (211-1) for forming a buoyancy space (211a) sealed inside so as to be floating on the water surface. In addition, at least one tube 211-2 communicating with the inside and the outside of the buoyant material 211 may be installed to form an air hole for the buoyancy space 211a. The tube 211-2 is protruded outwardly to prevent the fastening degree to the support 212 due to thermal expansion or contraction of the buoyancy space 211a, which is closed in summer and winter, to prevent the fastening degree of the support 212 from changing. It is possible to prevent the water from entering the buoyancy space (211a) of the buoyancy material (211).

The support 212 is integrally installed with the curved portion 212-1 contacting the upper outer circumferential surface of the buoyancy object 211 and the upper surface of the curved portion 212-1 and is in contact with the lower surface of the waterborne structure 200. A flat portion 212-2 and a pair of extension portions 212-3 extending outwardly from both sides of the flat portion 212-2 to form the curved portion 212-1 and the jaws. It is done by

Here, the curved portion 212-1 may be in airtight contact with the upper outer circumferential surface of the buoyancy material 211 and have a predetermined thickness to prevent the flow of the buoyancy material 211.

In addition, the planar portion 212-2 is integrally formed on the upper side of the curved portion 212-1, and has an upper surface formed flat to form a '?' Shape with the curved portion 212-1.

The pair of extension parts 212-3 extend outward from both side ends of the flat part 212-2 in a rectangular or square shape, and have a jaw perpendicular to both sides of the curved part 212-1. Form each.

The support 212 may be made of the same material as the buoyancy material 211, and preferably supports the load of the waterborne structure 200 installed on the upper portion to be transferred to the buoyancy material 211 ( It may be formed of an elastic material to minimize the load of the 200).

Meanwhile, the fastener 213 has an intermediate portion wound on the lower circumferential surface of the buoyancy portion 211 and both ends thereof correspond to the jaws of the respective extension portions 212-3 so that the buoyancy portion 211 is supported on the support 212. Is fixed).

In particular, both ends of the fastener 213 are bent at the jaws of each of the extension parts 212-3 so that the extension structure 212-3 of the support 212 is interposed between the waterborne structure 200 and the bolt. (B) and the nut (N) can be fastened.

In this case, the fastener 213 is preferably a metal sheet of a metal material having a predetermined width, and formed of stainless material to prevent corrosion.

At least two of the floating bodies 210 are disposed at a predetermined length on a lower surface of the floating structure 210 so that the floating structure 200 is floatably installed on the surface of the water.

Since the buoyancy material 211 is a circular structure, flow may occur when fastening on the lower surface of the plate-shaped water structure 200, and thus, at least two or more supports 212 between each buoyancy material 211 and the water-based structure 200. ) At regular intervals.

Thus, the aquatic structure 200 is mounted on the upper surface of the flat portion 212-2 of the support 212, the buoyancy 211 is supported on the curved portion 212-1 of the support 212 Becomes

In this state, the lower outer peripheral surface of the buoyancy material 211 is wound using the fastener 213 and both ends of the fastener 213 bent at the extension portion 212-3 of the support 212. The water structure 200 is fixed with a bolt (B) and a nut (N).

According to the buoyancy body of the present invention as described above, the buoyant body having a cylindrical shape can be firmly supported on the lower surface of the waterborne structure of the planar structure so that various facilities installed on the upper surface of the waterborne structure can be safely operated.

In addition, the aquatic structure 200 is provided with a slot hole 220 bored in a predetermined section so that the water surface and the lower portion of the solar cell module 300 correspond to each other, the low temperature gas of the water surface by the convection phenomenon The solar cell module 300 may be cooled by being in contact with a lower portion of the heated solar cell module 300.

On the other hand, the solar cell module 300 is a structure that is fixed on the water structure 200 to convert the light energy incident from the sun into electrical energy, the solar cell for generating electricity by a semiconductor material receiving sunlight It is modularized by connecting several, and the lower portion is supported by a plurality of supports 310 so that the light of the sun is almost vertically incident through the inclined structure formed at a predetermined angle.

The solar cell module 300 may adjust the number of installations according to the size of the water structure 200 in a variety of ways.

In addition, the pumping motor 400 is mounted to the upper portion of the water structure 200 is provided to pump the water of the water tank (100).

Referring to FIG. 2, a bottom of the pumping motor 400 is disposed at a predetermined height inside the partition 110 to penetrate through the water structure 200 so as to spray water inside the filtered partition 110. The pumping pipe 410 is formed in communication.

In addition, the transfer pipe is connected to the pumping motor 400 is provided to guide the water pumped from the pumping motor 400 to the vicinity of the solar cell module 300 by water pressure.

That is, the transfer pipe is connected to the pumping motor 400 and the first water pipe 510 which is branched in both directions, and the first water pipe 510 vertically cross so as to communicate with the front of the solar cell module 300. It consists of a plurality of second water pipe 520 is disposed to pass through.

At this time, as shown in FIG. 6 on the second water pipe 520, when the pumping motor 400 is not operated, the flow path is switched to discharge the water inside the transfer pipe to the outside, in particular, the slot hole 220 direction. At least one three-way valve 550 is preferably installed.

According to this, when the washing or cooling action for the solar cell module 300 is stopped, the water pumped on the transfer pipe is concentrated, and after a predetermined time, the solar cell module 300 is in a state where the water temperature is increased. By performing cooling to, it is possible to prevent the cooling efficiency from being lowered.

In addition, at least one check valve may be installed on the first water pipe 510 so as to prevent backflow of water.

On the other hand, the water jet unit 600 is installed in communication with the second water pipe 520 of the transfer pipe, the nozzle 610 is provided to clean or cool the surface of the solar cell module 300.

The water jet unit 600 is preferably installed orthogonal to the water structure 200.

To this end, the water jet unit 600 has a first communication pipe 620, one end of which is in communication with the second water pipe 520 of the transfer pipe, and the nozzle 610 is disposed on the upper portion, the lower portion of the first communication pipe It is composed of a second communication tube 630 accommodated inside the 620.

Here, the second communication tube 630 may be extended by hydraulic or electric so that the length is minimized when not in operation, so as not to cast a shadow on the surface of the solar cell module 300, if necessary extends the solar cell Washing and cooling may be performed on the module 300.

In addition, the nozzle 610 may be rotated to the left and right to wash and cool a larger area of the solar cell module 300 with high pressure water.

In addition, the present invention may further include a movable unit 700 for rotating the position of the water structure 200 according to the orbit of the solar cell module 300.

The movable part 700 has a fixed shaft 710 which is vertically fixed to the water structure 200 and the water tank 100, and between the circumferential surface of the water structure 200 and the fixed shaft 710 Installed in the water structure 200 is configured to include a bearing 720 rotatably provided.

In addition, the movable part 700 according to the present embodiment is a drive motor 730 is installed on the ground to provide power, a roller 740 provided on the rotation shaft 731 of the drive motor 730, and the water Fixing bar 750 fixed to the edge of the structure 200, and one end is connected to the roller 740 to be wound, the other end is further provided with a wire 760 fixed on the fixing bar 750 .

Here, the driving motor 730, the roller 740, the fixed bar 750 and the wire 760 are installed in two pairs corresponding to each pair, the other set of driving facing the pair of driving motors 730 facing each other Rotation of the motors 730 is controlled to operate in opposite directions to each other.

At this time, a pair of wires 760 facing each other are disposed to be inclined at a predetermined angle in a clockwise direction with respect to the virtual center line passing through the fixed shaft 710, the other pair of wires 760 facing each other to the fixed shaft 710 The angle is inclined counterclockwise with respect to the passing virtual center line.

Therefore, when the pair of drive motors 730 facing forward and the other pair of drive motors 730 reversely rotate to rotate each roller 740, the pair of wires 760 facing each other are wound and As the releases intersect with each other, the waterborne structure 200 may be rotated about the fixed shaft 710.

As the water structure 200 is rotated along the trajectory of the sun by appropriately controlling this, the solar cell module 300 and the sun have an optimal angle so that light incident from the sun is applied to the surface of the solar cell module 300. Maximum delivery to the phase.

The movable part 700 is not limited to the present embodiment, and any installation structure may be applied as long as the movable part 700 can rotate the water structure 200.

For example, a gear tooth (not shown) is formed on an outer circumferential surface of the water structure 200, and an interlocking gear (not shown) engaged with the gear tooth and a driving gear (not shown) engaged with the interlocking gear are added. It is also possible to directly rotate the waterborne structure 200 by increasing the rotational torque through the adjustment of the gear ratio.

In addition, the present invention, the pipe 810 is installed inside the wall and the bottom of the water tank 100, the refrigerant circulating through the pipe 810 to cool the heat exchange between the refrigerant and the water of the water tank 100 The cooling unit 800 may further include a main body 820.

The cooling main body 820 is a compressor for compressing a low-temperature low-pressure refrigerant into a high-temperature high-pressure refrigerant, and the air or water as a heat absorbing medium in contact with a pipe flowing the high-temperature high-pressure refrigerant discharged from the compressor to obtain a high-temperature high-pressure refrigerant The exothermic fluid is brought into contact with a condenser for changing the phase into a liquid refrigerant having a low temperature and high pressure, an expansion valve for reducing the pressure of the liquid refrigerant discharged from the condenser, and a pipe through which the low temperature and low pressure liquid refrigerant discharged from the expansion valve flows. The low temperature and low pressure liquid refrigerant of the fluid is of a known configuration including an evaporator which phase changes into a low temperature low pressure gas refrigerant.

Hereinafter, a description will be given of the operation of the surface-floating photovoltaic device according to an embodiment of the present invention.

When it is determined that cleaning or cooling of the solar cell module 300 is required, the pumping motor 400 is operated manually or automatically.

Accordingly, the water, which is present in the filter 110 and inside the partition 110 of the water tank 100, is pumped through the pumping pipe 410, and then passes through the first water pipe 510 and the second water pipe 520. By the nozzle 610 of the water jet unit 600 is finally ejected to a high pressure state.

At this time, the water jet unit 600 is extended as shown in Figure 6 as necessary, and the nozzle 610 is rotated left and right to maximize the cleaning radius for the solar cell module 300.

As such, by cooling the solar cell module 300 using the cooled water, not only can the cooling and power generation efficiency of the solar cell module 300 be improved, but also the output degradation due to deterioration can be prevented to prevent the solar cell module 300 from being deteriorated. It is possible to maintain the life.

In addition, the surface contamination and accumulated snow of the solar cell module 300 can be effectively washed using high pressure water, thereby improving the photovoltaic power generation efficiency.

In addition, in the present embodiment, most of the water recovered through the washing and cooling of the solar cell module 300 and the water recovered through the three-way valve 550 are recovered again into the water tank 100 to recover the water of the water tank 100. Can be recycled.

On the other hand, referring to Figure 7, the surface-floating photovoltaic device according to another embodiment of the present invention by collecting and filtering the water to be naturally drained through the drain line 130, separate water supply line 120 ' It can be recycled by supplying water.

In particular, the present embodiment is further provided with a collecting well 900 and the circulation pipe 150 for connecting the drain line 130 and the water supply line 120 ', the cooling device (C) is provided The water collecting well 900 is buried under 10m to 15m underground to naturally cool the water to be naturally drained to about 15 ° C. using geothermal heat, so that the cooling unit 800 can be replaced and operated if necessary.

In addition, the surface-floating photovoltaic device according to another embodiment of the present invention, as shown in Figure 8, the barrier rib 150 is not installed and the sump well 900 'is installed to be seated on the water structure 200 It may be.

In this case, a filtering and cooling device (C) is provided inside the water collecting well 900 ′ of another embodiment to draw and purify the water in the water tank 100 by using the pumping motor 400 and the pumping pipe 410. It is preferable to be able to supply the cooled water to the transfer pipe.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and it should be understood by those of ordinary skill in the art to which the present invention relates, Of course, various modifications and variations can be made within the equivalent range.

Claims

Floating water structure 200 is installed on the water surface floating;

A solar cell module 300 fixed to the water structure 200 to convert light energy incident from the sun into electrical energy;

A pumping motor 400 mounted on the aquatic structure 200 to pump surrounding water;

A transfer pipe connected to the pumping motor 400 to guide the water pumped from the pumping motor 400 to the vicinity of the solar cell module 300 by water pressure; And

A water jet part 600 connected to the transfer pipe and having a nozzle 610 to clean or cool the surface of the solar cell module 300;

Sleep floating photovoltaic device comprising a.
The method of claim 1,

The solar cell module 300, the surface floating photovoltaic device further comprises a movable part 700 for rotating the water structure 200 in accordance with the orbit of the sun.
The method of claim 2, wherein the movable part 700,

A fixed shaft 710 vertically penetrated with respect to the aquatic structure 200,

The surface floating solar power generation device, characterized in that it comprises a bearing 720 is installed between the water surface structure 200 and the circumferential surface of the fixed shaft 710 rotatably provided the water structure 200. .
The method of claim 2, wherein the movable part 700,

Drive motor 730 is installed on the ground to provide power,

A roller 740 installed on the rotation shaft 731 of the drive motor 730,

A fixed bar 750 fixedly installed on the water structure 200;

Surface-mounted solar power generating device characterized in that it comprises a wire (760), one end of which is wound around the roller (740) and the other end of which is fixed on the fixing bar (750).
The method of claim 1,

Water tank 100;

Piping 810 is installed inside the wall of the water tank 100,

The surface floating solar cell apparatus, further comprising a cooling unit 800 formed of a cooling main body 820 for circulating and flowing the refrigerant to the pipe 810.
The water tank (100) of claim 5,

Surface-mounted photovoltaic device characterized in that the partition wall (110) standing on its bottom to partition the stored water into the inside and outside.
The method of claim 6, wherein the partition 110,

The communication hole 111 for communicating the inner and outer water is formed, the water surface floating type characterized in that the electric filter unit 115 for filtering and supplying the water of the outside on the communication hole 111 is provided. Solar power device.
According to claim 1, On the transfer pipe,

At least one three-way valve (550) for discharging the water inside the transfer pipe to the outside is characterized in that the surface-mounted photovoltaic device.
According to claim 1, The water jet unit 600,

The surface floating solar cell apparatus, characterized in that orthogonal to the water structure 200 is installed.
10. The method of claim 9, wherein the water jet unit 600,

A first communication pipe 620 whose one end is in communication with the transfer pipe,

The nozzle 610 is disposed in the upper portion of the water surface-type solar power generation, characterized in that it further comprises a second communication tube 630 that is accommodated in the inner side of the first communication tube 620 and hydraulically or electrically driven in and out Device.
The method of claim 5, wherein the lower portion of the water structure 200,

The surface floating solar cell apparatus, characterized in that a plurality of floating body 210 is installed so as to float on the water surface of the tank (100).
The method of claim 11, wherein the floating body 210,

Cylindrical buoyancy material 211;

A curved portion 212-1 in contact with the upper outer circumferential surface of the buoyancy object 211, a flat portion 212-2 integrally installed at an upper side of the curved portion 212-1 and in contact with a lower surface of the water plate; A support (212) having a pair of extension portions (212-3) extending from both sides of the planar portion (212-2) to the outside to form the curved portion (212-1) and the jaws; And

A fastener 213 having an intermediate portion wound on a lower outer circumferential surface of the buoyancy material 211 and both ends corresponding to the jaws of the respective extension parts 212-3 to fix the buoyancy material 211 to the support 212;

Sleep floating photovoltaic device comprising a.
The method of claim 12, wherein both ends of the fastener 213,

Water surface floating photovoltaic characterized in that is bent from the jaws of each of the extension portion 212-3 and bolted to the water structure 200 with the extension portion 212-3 of the support 212 therebetween. Power generation device.
The fastener 213 of claim 12 or 13,

Sleep surface type solar power generation device, characterized in that the metal sheet of a metal material having a predetermined width.
The method of claim 12, wherein the buoyant 211,

The surface floating solar cell apparatus, characterized in that the curved tube (211-2) for communicating the inside and the outside is installed through.