KR20160043782A - Cooling system for solar cell - Google Patents

Abstract

The present invention relates to a solar cell cooling system. According to the present invention, the solar cell cooling system cools a solar cell panel (10). The solar cell panel (10) is installed to be separated from a support object (1) of the solar cell panel (10) at a predetermined interval. The solar cell panel comprises a spray unit (100) configured to cool a rear surface of the solar cell panel (10) by spraying cooling water (w) of a fog state between the support object (1) and the solar cell panel (10).

Description

{COOLING SYSTEM FOR SOLAR CELL}

The present invention relates to a solar cell cooling system. More particularly, the present invention relates to a solar cell cooling system capable of increasing the cooling effect and the photoelectric conversion efficiency by spraying cooling water in a fog state on the rear surface of a solar cell panel spaced apart from a support.

In general, a building integrated photovoltaic system (BIPV system) refers to a technology in which a solar cell is applied as a building material to be used as an exterior material for a building.

Since such a BIPV system can minimize the energy consumption of a rapidly growing building using the power generated from the solar cell, recently, the buildings adopting the BIPV system are increasingly increasing in terms of energy saving. Furthermore, since such a BIPV system can be configured to allow the transmission of sunlight, it is widely known as a mining or awnings facility of a building.

However, as the temperature of the solar panel of the BIPV system increases, the photoelectric conversion efficiency becomes lower. Accordingly, as a method for cooling the solar panel, a device for spraying cooling water on the entire surface of the solar panel has been proposed. However, when the cooling water is sprayed to the front surface of the solar cell panel, some of the cooling water is vaporized by the heat of the solar cell panel, and some of the cooling water is left on the surface of the solar cell panel to contaminate the surface of the solar cell panel, There is a problem that the photoelectric conversion efficiency is reduced by irregularly reflecting sunlight.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a solar cell cooling system capable of efficiently cooling a solar cell panel.

It is another object of the present invention to provide a solar cell cooling system capable of cooling a solar cell panel without contaminating the surface of the solar cell panel.

The above object of the present invention is also achieved by a solar cell cooling system for cooling a solar cell panel, wherein the solar cell panel is installed at a predetermined distance from the support of the solar cell panel, And a spraying portion for spraying cooling water in a mist state to cool the rear surface of the solar cell panel.

The solar cell cooling system may further include an air amplifying unit, wherein the air amplifying unit includes: an inlet through which air flows; And an outlet formed to have a smaller cross-sectional area than the inlet and through which the air is discharged.

The air discharged from the outlet may be sent to a space between the support and the solar cell panel.

The cooling water guide portion may include a hydrophilic portion having hydrophilic property and a hydrophobic portion having hydrophobic property.

The hydrophobic portion may have a protruding shape, and the cooling water formed on the hydrophobic portion may be guided toward the hydrophilic portion.

According to the present invention, the solar cell panel can be efficiently cooled.

Further, according to the present invention, there is an effect that the solar cell panel can be cooled without contaminating the surface of the solar cell panel.

FIG. 1 is a perspective view showing an entire structure of a solar cell cooling system according to an embodiment of the present invention.
2 is a partial side cross-sectional view of a solar cell cooling system according to an embodiment of the present invention.
3 is a partial side cross-sectional view of a solar cell cooling system according to another embodiment of the present invention.
4 is a plan view and a cross-sectional view illustrating a cooling water guide portion according to an embodiment of the present invention.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views, and length and area, thickness, and the like may be exaggerated for convenience.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

FIG. 1 is a perspective view showing an overall structure of a solar cell cooling system according to an embodiment of the present invention, and FIG. 2 is a partial side sectional view of a solar cell cooling system according to an embodiment of the present invention. In addition, it is noted that the solar cell cooling system of the present invention is not necessarily limited to being installed only in the form of FIG.

Referring to FIGS. 1 and 2, a solar cell cooling system according to an embodiment of the present invention includes a solar cell panel 10, a solar cell panel 10, And a spraying part (100) for spraying cooling water for cooling the solar cell panel (10).

The solar panel 10 includes a plurality of solar cells (not shown), and electric energy generated in the solar cells can be transmitted to a power supply target (not shown). The solar panel 10 can control the amount of light transmitted to the inside of the building according to the aperture ratio and generate electric energy and contribute to the appearance of the building according to the change of the color of the solar cell.

The solar cell panel 10 may be spaced apart from the support 1 by a predetermined distance. That is, a predetermined space may be formed between the surface of the support 1 and the rear surface of the solar cell panel 10. The solar cell panel 10 can be supported by providing the supporting frame 5 on the supporting member 1 so that the solar cell panel 10 and the supporting member 1 are spaced apart from each other by a predetermined distance.

The spraying unit 100 can spray the cooling water w in a fog state to the solar cell panel 10. [ The spraying section 100 may be constituted by a plurality of nozzles 110. The number of the nozzles 110, the distance between the nozzles 110, and the intensity of the cooling water w sprayed from the nozzles 110 can be appropriately changed in consideration of the size of the solar cell panel 10. The cooling water flowing from the external cooling water supply device (not shown) into the spraying part 100 can be sprayed into the space between the solar cell panel 10 and the support body 1 through the nozzle 110.

The cooling water (w) in the fog state can be vaporized immediately by the heat of the solar cell (10) because the area per unit volume is very large as compared with the ordinary cooling water. Thus, the possibility that the cooling water remains in the solar panel 10 is reduced.

In addition, since the spray portion 100 sprays the cooling water w in a mist state on the space between the solar cell panel 10 and the support 1, that is, the rear surface of the solar cell panel 10, 10, cooling water is left on the entire surface of the solar cell panel 10 to contaminate the front surface of the solar cell panel 10 or reduce the possibility of irregular reflection, thereby increasing the photoelectric conversion efficiency .

In addition, the solar cell cooling system of the present invention may further include an air amplification unit 200. It is preferable that the air amplification unit 200 is disposed below the solar panel 10 so that the air a that has passed through the air amplification unit 200 is sent to the solar panel 10 side.

The air amplification part 200 has a tunnel shape and may include an inlet 210 through which air flows and an outlet 220 through which air is discharged. The outlet 220 is preferably formed to have a smaller cross-sectional area than the inlet 210. The air amplification unit 200 can amplify the moving speed of the air a using the Bernoulli principle due to the difference in sectional area between the inlet 210 and the outlet 220.

The Bernoulli principle is that fluids flow at high cross-sectional areas and at small cross-sections, where fluids flow slowly and pressures are high, where the cross-sectional area is small, the fluid flow is fast and the pressure is low, Pressure refers to a principle having a constant relationship. Accordingly, if the cross-sectional area of the discharge port 220 is smaller than that of the inlet port 210 in the flow path of the air a, the speed of the air a, which is the fluid, may increase.

The air a discharged from the outlet 220 through the air amplifying unit 200 can be sent to the space between the support 1 and the solar cell panel 10 at an increased speed. Thus, the cooling water w in a fog state can be uniformly sprayed on the entire surface of the rear surface of the solar cell panel 10 by the air a amplified at the speed. Further, when the outside temperature is not so high, the solar panel 10 may be cooled only by the air (a) itself amplified at the speed without using the cooling water (w). When a part of the air a amplified in speed is sent to the front surface of the solar cell panel 10, the foreign matter on the front surface of the solar cell panel 10 can be removed, The cooling water remaining on the rear surface of the solar panel 10 may be removed to prevent the rear surface of the solar panel 10 from being contaminated.

3 is a partial side cross-sectional view of a solar cell cooling system according to another embodiment of the present invention. 4 is a plan view (FIGS. 4A and 4C) and a cross-sectional view (FIG. 4B and FIG. 4D) showing a cooling water guide portion 300 according to an embodiment of the present invention.

Referring to FIGS. 3 and 4, the solar cell cooling system of the present invention may further include a coolant inducing unit 300 installed on a rear surface of the solar cell panel 10 such that the front surface thereof is in contact with the rear surface. The cooling water guiding portion 300 can use a lightweight material having a high thermal conductivity so as to be able to radiate heat from the rear surface of the solar cell panel 10. For example, aluminum or copper may be used, but the present invention is not limited thereto.

The rear surface of the cooling water induction part 300 may include a hydrophobic part 310 having hydrophobicity and a hydrophilic part 320 having hydrophilic property. The hydrophobic portion 310 may be formed by coating or surface-treating a hydrophobic material such as ether, styrene, vinyl acid, or vinyl alcohol, and the hydrophilic portion 320 may be hydrophilic A polymer material including an acrylic acid, an acrylamide, an ethyleneimine, and other amine functional groups may be coated or surface-treated as a material. However, other materials than the above-mentioned materials may be used without limitation within the scope of the object of making the rear surface of the guide portion 300 hydrophobic and hydrophilic.

The remaining area of the cooling water guide part 300 except for the area where the fraction part 310 is formed may be the hydrophilic part 320. Since the hydrophobic portion 310 is difficult to bind to water, water can flow down from the surface of the hydrophobic portion 310, and the hydrophilic portion 320 can collect water due to the property of binding the hydrophilic portion 320 with water.

4 (a) and 4 (b), or may be formed in a semicircular form (FIGS. 4 (c) and 4 (d) . FIG. 4 illustrates one embodiment of the decimal part 310, and the shape of the decimal part 310 may be changed without limitation.

Even if misty cooling water w is sprayed to the space between the solar cell panel 10 and the supporting member 1 in the spraying unit 100, the cooling water w in a mist state is formed on the rear surface of the solar panel 10 It can remain like dew. Accordingly, the cooling water formed in the fractional part 310 can be guided along the hydrophobic part 310 having the protruding shape in the direction of the hydrophilic part 320 and the cooling water collected in the direction of the hydrophilic part 320 can be guided to the drainage (not shown) Or may be removed on the rear surface of the solar cell panel 10 by the air (a) whose speed is amplified by the air amplification section 200.

As described above, the solar cell cooling system according to the present invention is a solar cell cooling system according to the present invention, in which the cooling water (w) in a mist state is sprayed on the rear surface of the solar cell panel 10 and the speed of the air (a) There is an effect that the battery panel can be efficiently cooled.

In addition, the cooling water formed in the solar cell panel 10 can be removed by the air (a) or can be easily drained by the cooling water guide section 300, so that the solar cell panel There is an effect that cooling can be performed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. Therefore, the spirit of the present invention should not be construed as being limited to the above-described embodiments, and all of the equivalents or equivalents of the claims, as well as the following claims, I will say.

1: Support
5: Support frame
10: Solar panel
100:
110: Nozzle
200: air amplifier
210: inlet
220: Outlet
300:
310: Minority
320: hydrophilic part
a: Speed-amplified air
w: Cooling water in the fog state

Claims (5)

1. A solar cell cooling system for cooling a solar panel,
Wherein the solar cell panel is spaced apart from a support of the solar cell panel by a predetermined distance,
A cooling unit for cooling the rear surface of the solar cell panel by spraying cooling water in a mist state in a space between the support and the solar cell panel,
The solar cell cooling system comprising: The method according to claim 1,
Wherein the solar cell cooling system further comprises an air amplifier,
The air amplifier unit
An inlet through which air flows; And
And a discharge port formed to have a smaller cross-sectional area than the inlet and through which the air is discharged. 3. The method of claim 2,
And the air discharged from the outlet is sent out to a space between the support and the solar cell panel. The method according to claim 1,
Further comprising a coolant inducing unit installed on a rear surface of the solar cell panel such that a front surface thereof is in contact with the solar cell panel,
Wherein the rear surface of the cooling water induction portion includes a hydrophilic portion having hydrophilicity and a hydrophobic portion having hydrophobicity. 5. The method of claim 4,
Wherein the fractional portion has a protruding shape, and the cooling water formed in the fractional portion is guided toward the hydrophilic portion.

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