KR101302063B1 - Apparatus of green-house intergrated photovoltaic power generation - Google Patents

Abstract

An object of the present invention relates to a greenhouse integrated photovoltaic device for reducing the heating cost of the greenhouse by efficiently utilizing the energy generated by the photovoltaic device. In accordance with one aspect of the present invention for achieving the above object of the present invention, a greenhouse integrated photovoltaic device is formed in an upper portion of a greenhouse, and a transmission module for transmitting sunlight for heating the greenhouse, the interior of the transmission module. Solar cell module for generating electrical energy for heating the greenhouse based on the transmitted solar light located in the, Heating module for heating the greenhouse based on the heat energy generated by the solar cell module generates electrical energy And a tracking module for moving the solar cell module according to the position of the sun which is changed by the rotation and rotation of the earth. According to the present invention, since the greenhouse can be heated using not only the electric energy generated by the solar cell but also the heat energy generated as the solar cell generates the electric energy, the energy generated by the solar cell can be utilized more efficiently. And, this has the advantage that can significantly reduce the heating cost required for heating the greenhouse.

Description

Greenhouse integrated photovoltaic device {Apparatus of green-house intergrated photovoltaic power generation}

The present invention relates to a greenhouse integrated photovoltaic device, and more particularly, to a greenhouse integrated photovoltaic device for heating a greenhouse using the photovoltaic device.

Green-houses are used to prevent cold damage of plants, and are mainly used to prevent cold damage of crops including horticulture, fruits and vegetables, as well as landscaping facilities and botanical gardens. In order to heat such a greenhouse, 160KWh (about 140,000 Kcal) of electricity is consumed per 300 pyeong. In other words, in a 300-square-foot greenhouse, at least 140,000 Kcal or more of power is required, so heating for 5 months for 8 hours a day is more than 50 million won (assuming 1,750 won / L via boiler and 0.09L / H of energy per pyeong). A huge heating cost is required, and self-measurement is required to reduce such heating costs.

In order to solve the above problems, a solar power generation system may be introduced into a greenhouse, but a conventional solar power generation system heats a greenhouse using only electric energy generated on the basis of solar light, which is very inefficient in terms of energy efficiency. there was. That is, the solar cell used in the photovoltaic power generation system converts light energy into electrical energy by using the photovoltaic effect, and thermal energy is generated from the solar cell by the photovoltaic effect. There was a problem in that the energy generated by the photovoltaic system could not be utilized efficiently.

An object of the present invention relates to a greenhouse integrated photovoltaic device for reducing the heating cost of the greenhouse by efficiently utilizing the energy generated by the photovoltaic device.

In accordance with one aspect of the present invention for achieving the above object of the present invention, a greenhouse integrated photovoltaic device is formed in an upper portion of a greenhouse, and a transmission module for transmitting sunlight for heating the greenhouse, the interior of the transmission module. Solar cell module for generating electrical energy for heating the greenhouse based on the transmitted solar light located in the, Heating module for heating the greenhouse based on the heat energy generated by the solar cell module generates electrical energy And a tracking module for moving the solar cell module according to the position of the sun which is changed by the rotation and rotation of the earth.

The transmission module may be formed in an inorganic pillar structure using at least one material of vinyl or glass.

The solar cell module may include at least one condenser lens for focusing sunlight transmitted through the transmission module.

The solar cell module may include a first condensing lens for focusing sunlight transmitted through the transmission module, a second condensing lens for condensing sunlight passing through the first condensing lens, and a photovoltaic light passing through the second condensing lens. It may further include a cover glass for reducing the reflectance and a solar cell for generating electrical energy based on the sunlight passing through the cover glass.

The heating module is located under the solar cell module, a heating pipe in which a fluid for absorbing heat energy generated as the solar cell module generates electrical energy is located, the fluid located inside the heating pipe. A temperature sensor for detecting the temperature of the and may further include a pump for controlling the flow of the fluid in accordance with the temperature detected by the temperature sensor.

One surface of the heating pipe may be formed to be bent inward and the groove may be formed so that the solar cell module is in direct contact with the fluid.

The tracking module, the azimuth control unit for moving the solar cell module corresponding to the azimuth angle of the sun changes according to the rotation and revolution of the earth and the solar cell module corresponding to the altitude angle of the sun changes according to the rotation and revolution of the earth It may further include an altitude angle control unit for moving.

According to the present invention, since the greenhouse can be heated using not only the electric energy generated by the solar cell but also the heat energy generated as the solar cell generates the electric energy, the energy generated by the solar cell can be utilized more efficiently. And, this has the advantage that can significantly reduce the heating cost required for heating the greenhouse.

1 is a block diagram showing the configuration of a photovoltaic device according to an embodiment of the present invention.
2 is a perspective view of FIG.
3 is a front view illustrating an operating state of the tracking module of FIG. 1.
4 is a front view illustrating the solar cell module and the heating module of FIG. 1.
5 is a perspective view illustrating the heating pipe of FIG. 1.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Hereinafter, the same reference numerals will be used for the same constituent elements in the drawings, and redundant explanations for the same constituent elements will be omitted.

FIG. 1 is a block diagram illustrating a greenhouse integrated photovoltaic device according to an embodiment of the present invention, wherein the greenhouse integrated photovoltaic device is formed on an upper portion of the greenhouse 50 and provides sunlight for heating the greenhouse 50. The solar cell module 20, a solar cell module (20) for generating electrical energy for heating the greenhouse 50 based on the transmitted sunlight is located in the transmission module 10, the transmission module 10 is transmitted through the 20) the solar cell module 20 corresponding to the heating module 30 for heating the greenhouse 50 based on the heat energy generated by the generation of electrical energy and the position of the sun that changes according to the rotation and revolution of the earth. It includes a tracking module 40 to move.

The greenhouse 50 includes a vinyl greenhouse, which is used to prevent freezing of crops, and a glass greenhouse, which is used for landscaping facilities and botanical gardens. As shown in FIG. 2, the transmission module 10 is formed at an upper portion of the greenhouse 50 to transmit sunlight used for heating the greenhouse 50, and to penetrate the interior from an external environment such as rain, snow, and wind. Protect the solar cell module 20, heating module 30, tracking module 40 located.

In addition, the size of the transmission module 10 is formed to have a sufficient space so that at least one tracking module 40 is located therein, the material of the transmission module 10 is formed of a vinyl or glass that transmits sunlight It is desirable to be. More preferably, the material of the transmission module 10 is formed of a fluororesin film having a transmittance of 95% or more.

In addition, the transmission module 10 may be formed of one material or a plurality of materials. For example, the transmission module 10 may be formed of only vinyl, only of glass, or may be formed using both vinyl and glass.

In addition, the transmission module 10 is preferably formed in an inorganic pillar structure in order to further improve the power generation efficiency of the solar cell module 20 located therein. The non-column structure refers to the formation of a structure without a support pillar, and the support pillar for supporting the transmission module 10 is provided only on both sides of the transmission module 10, so that only the support pillars provided on both sides of the transmission module ( 10) can be supported, so that the inner side of the transmission module 10 can be formed in a pillar structure.

The solar cell module 20 generates electrical energy for heating the greenhouse 50 based on the sunlight transmitted through the transmission module 10, the solar cell module 20 is the interior of the transmission module 10 Located at and includes at least one condenser lens for focusing sunlight. As shown in FIG. 4, the solar cell module 20 collects sunlight passing through the first condensing lens 21 and the first condensing lens 21 to focus the sunlight transmitted through the transmission module 10. Generating electrical energy based on sunlight passing through the cover glass 23 and the cover glass 23 to reduce reflectance of the sunlight passing through the second condenser lens 22 and the second condenser lens 22 belonging thereto. The solar cell 24 may further include. In addition, the solar cell module 20 may further include a frame 25 to which the solar cell 24 is attached.

The first condenser lens 21 focuses the sunlight transmitted from the transmission module 10 to the second condenser lens 22, and the size of the first condenser lens 21 corresponds to the size of the solar cell 24. The distance between the first condenser lens 21 and the solar cell 24 may also vary according to the focal length of the first condenser lens 21.

The second condenser lens 22 focuses sunlight passing through the first condenser lens 21 to the solar cell 24, and the second condenser lens 22 is the first condenser lens 21 and the solar cell. It is located between 24. In addition, the size of the second condenser lens 22 is equal to or smaller than the area of the solar cell 24 so that the solar light focused by the second condenser lens 22 is incident on all surfaces of the solar cell 24. It is preferable to form.

In addition, the second condenser lens 22 may be positioned to be spaced apart from the cover glass 23 and may be attached to the cover glass 23. When the second condenser lens 22 is spaced apart from the cover glass 23, it is preferable to provide a separate support to fix the second condenser lens 22, and the second condenser lens 22 is fixed to the cover glass. When attaching to (23), it is preferable to attach the second condenser lens 22 directly to the cover glass 23 without having to provide a separate support.

The cover glass 23 is attached to the upper portion of the solar cell 24 to reduce the reflectance of the sunlight focused by the second condensing lens 22, and at this time, the refractive glass due to the attachment of the cover glass 23 In order to reduce, it is preferable to attach the cover glass 23 to the solar cell 24 using a silicone resin. In addition, the cover glass 23 is preferably formed of a glass material, and in order to reduce the reflectance, the surface of the cover glass 23 may be subjected to antireflection coating and texturing.

The solar cell 24 converts sunlight into electrical energy and is attached to an upper portion of the frame 25. The solar cell 24 according to an embodiment of the present invention may be formed of a triple junction solar cell, which is a group 3-5 compound semiconductor stacked solar cell, and the output of the solar cell 24 is the size of the solar cell 24. And the size of the first condensing lens 21.

For example, when the size of the solar cell 24 is 0.3025 cm 2 and the size of the first condenser lens 21 is 12 cm × 12 cm, the geometric condensing ratio is 476 times, so the ideal output is about 6 watts or the first. Due to the loss in the condenser lens 21 and the heat generated during condensing, the actual output is about 3 watts, the size of the solar cell 24 is 1.0 cm 2, and the size of the first condenser lens 21 is 24 cm × 24 cm. Since the geometric condensation ratio is 484 times, the ideal output is about 20 watts, but the actual output is about 10 watts due to the loss in the first condensing lens 21 and the heat generated during condensing.

The heating module 30 is to heat the greenhouse 50 based on the heat energy generated by the solar cell 24 generates electrical energy, the solar cell 24 is generally a photovoltaic effect (Photo Voltanic Effect) ) To convert light energy into electrical energy. The photovoltaic effect refers to a phenomenon in which when a strong light is incident on the pn junction of a semiconductor or a metal having a rectifying action and a boundary between the semiconductor, electrons and holes made in the semiconductor are separated due to contact potential differences, and different kinds of electricity appear in both materials. . Thermal energy is generated in the solar cell 24 by the photovoltaic effect, and the heating module 30 uses the heat energy to heat the greenhouse 50.

The heating module 30 is located in the lower portion of the solar cell module 20, the heating pipe 31 in which a fluid for absorbing the heat energy generated as the solar cell module 20 generates electrical energy, It may further include a temperature sensor 32 for detecting the temperature of the fluid located inside the heating pipe 31 and a pump 33 for controlling the flow of the fluid in accordance with the temperature detected by the temperature sensor 32.

The heating pipe 31 is to absorb the heat energy generated by the solar cell 24 included in the solar cell module 20 to generate electrical energy, the inside of the heating pipe 31 to absorb the heat energy. Fluid is located. In addition, the heating pipe 31 is preferably formed of a material having a high thermal conductivity (for example, a metal) in order to transfer the heat energy generated from the solar cell 24 to the fluid without loss, and in order to further improve the thermal conductivity The pipe 31 is preferably formed in a structure that can maximize the area in contact with the solar cell module 20. In addition, the fluid flowing inside the heating pipe 31 is preferably made of a material having high thermal conductivity.

4 and 5, one surface of the heating pipe 31 in which the solar cell module 20 is positioned is formed to be bent inward and the groove 31a is in direct contact with the fluid. ) Is preferably formed. That is, by inserting the solar cell module 20 on one surface of the heating pipe 31 bent inward, it is possible to maximize the area in contact with the solar cell module 20 and the fluid, thereby the solar cell module 20 It is possible to improve the absorption rate of the thermal energy generated from. In addition, the groove 31a is formed on one surface of the heating pipe 31 bent inward so that the solar cell module 20 is in direct contact with the fluid, thereby further improving the absorption rate of thermal energy generated by the solar cell module 20. You can.

In addition, the heating pipe 31 positioned below the solar cell module 20 is extended to be positioned inside the greenhouse 10, whereby the fluid absorbing thermal energy generated from the solar cell 24 is the heating pipe. It can be made to flow to the greenhouse 10 along 31.

The temperature sensor 32 is installed inside the heating pipe 31 to detect the temperature of the fluid located inside the heating pipe 31. The temperature sensor 32 is preferably installed inside the heating pipe 31 in which the solar cell module 20 is located in order to accurately detect the temperature of the fluid changed by the solar cell module 20. That is, as shown in Figure 4, the temperature sensor 32 is installed inside the heating pipe 31 in which the solar cell module 20 is located, the temperature of the fluid changed by the heat energy generated in the solar cell module 20 Detect.

The pump 33 controls the flow of the fluid according to the temperature detected by the temperature sensor 32. When the temperature detected by the temperature sensor 32 is lower than the reference temperature, the pump 33 controls the fluid not to flow and the temperature sensor ( When the temperature detected at 32 is higher than the reference temperature, the fluid is controlled to flow along the heating pipe 31. For example, when the reference temperature is set to 80 ° C., the pump 33 controls the fluid not to flow when the temperature of the fluid detected by the temperature sensor 32 is lower than 80 ° C., and the temperature detected by the temperature sensor 32. If the temperature of the fluid is higher than 80 ℃ control the fluid to flow along the heating pipe (31).

As such, the solar cell 24 absorbs the heat energy generated as the electric energy is generated and flows the fluid whose temperature rises to the greenhouse 50 along the heating pipe 31 to generate the solar cell 24. The greenhouse 50 may be heated using the thermal energy.

The tracking module 40 is to improve the power generation efficiency of the solar cell module 20, the tracking module 40 is the solar cell module (20) according to the position of the sun so that the solar cell module 20 and the sunlight perpendicular to each other ( Move 20). As shown in FIG. 3, the tracking module 40 includes an azimuth control unit 41 for moving the solar cell module 20 corresponding to the azimuth angle of the sun that changes according to the rotation and revolution of the earth and the rotation and revolution of the earth. It may further include an altitude angle control unit 42 for moving the solar cell module 20 corresponding to the altitude angle of the changing sun. In addition, the tracking module 40 further includes a support portion 43 to which at least one solar cell module 20 is coupled, one end of the support portion 43 is coupled to the azimuth adjustment portion 41 and the other end of the altitude angle adjustment. Coupled with the portion 42. In addition, when the tracking module 40 is installed, one end of the support portion 43 coupled with the azimuth adjustment portion 41 faces south, and the other end of the support portion 43 coupled with the elevation angle adjustment portion 42 is north. Face it.

By installing the tracking module 40 in the same direction as described above it is possible to move the solar cell module 20 corresponding to the position of the sun changes according to the circumferential movement. That is, by rotating the support part 43 through the azimuth adjustment part 41, the solar cell module 20 may be moved in response to a change in the azimuth angle of the sun. At this time, it is preferable that the azimuth adjustment part 41 rotates the support part 43 so that the solar cell module 20 and the sunlight are perpendicular to each other.

In addition, by raising or lowering the other end of the support 43 through the elevation angle adjusting unit 42, the solar cell module 20 may be moved in response to the change in the elevation angle of the sun. At this time, the altitude angle control unit 42 is to raise or lower the other end of the support 43 so that the solar cell module 20 and the solar light is perpendicular to.

As such, by moving the solar cell module 20 in response to the azimuth and altitude angles of the sun that change according to the rotation and revolution of the earth through the azimuth angle adjusting part 41 and the altitude angle adjusting part 42, the solar cell module ( The power generation efficiency of 20) can be further improved.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

10: transmission module 20: solar cell module
21: first condenser lens 22: second condenser lens
23: cover glass 24: solar cell
25 frame 30 heating module
31: heating pipe 32: temperature sensor
33: motor 40: tracking module
41: azimuth control unit 42: altitude angle control unit
43: support 50: greenhouse

Claims (7)

A transmission module formed at an upper portion of the greenhouse and transmitting sunlight for heating the greenhouse;
A solar cell module which is positioned inside the transmission module and generates electric energy for heating the greenhouse based on the transmitted sunlight;
A heating module for heating the greenhouse based on thermal energy generated by the solar cell module generating electric energy; And
It includes a tracking module for moving the solar cell module according to the position of the sun changes by the rotation and revolution of the earth,
The heating module includes a heating pipe in which a fluid for absorbing thermal energy generated when the solar cell module generates electrical energy is located, a temperature sensor detecting a temperature of the fluid located inside the heating pipe, and the temperature sensor. A pump for controlling the flow of the fluid in accordance with the temperature detected in,
The heating pipe extends from the lower part of the solar cell module toward the inside of the greenhouse, so that the fluid absorbing heat energy from the solar cell module is formed to circulate inside the greenhouse along the heating pipe. Device. The method of claim 1, wherein the transmission module,
Greenhouse integrated photovoltaic device, characterized in that formed of an inorganic pillar structure using at least one material of vinyl or glass. The method of claim 1, wherein the solar cell module,
Greenhouse integrated photovoltaic device comprising at least one condenser lens for focusing the sunlight transmitted through the transmission module. The method of claim 3, wherein the solar cell module,
A first condenser lens for condensing sunlight transmitted through the transmission module;
A second condenser lens for condensing sunlight passing through the first condenser lens;
A cover glass for reducing a reflectance of sunlight passing through the second condensing lens; And
Greenhouse integrated photovoltaic device further comprising a solar cell for generating electrical energy based on the sunlight passing through the cover glass. delete According to claim 1, One side of the heating pipe,
Greenhouse integrated solar power generation device characterized in that the groove is formed bent inward and the solar cell module is in direct contact with the fluid. The method of claim 1, 2, 3, 4 or 6, wherein the tracking module,
An azimuth control unit for moving the solar cell module corresponding to the azimuth of the sun which changes according to the rotation and revolution of the earth; And
Greenhouse integrated solar power generation device further comprises an altitude angle control unit for moving the solar cell module corresponding to the altitude angle of the sun changes according to the rotation and rotation of the earth.

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