KR20210066578A - Solar-photovoltaic/solar-thermal hybrid generating apparatus - Google Patents

Abstract

A solar hybrid power generation device comprises: a solar module including a plurality of photoelectric conversion elements that receive sunlight to generate electricity; a solar heat collecting plate disposed under the solar module and absorbing the first heat corresponding to the solar heat; an adhesive layer disposed between the photovoltaic module and the solar heat collecting plate and integrating the photovoltaic module and the solar heat collecting plate; a first absorption tube which is disposed under the solar heat collecting plate and through which a first fluid transferring the first heat absorbed by the solar heat collecting plate flows; an insulating material disposed to surround the first absorption tube and preventing a loss of first heat transferred by the first fluid; a hollow layer disposed over the solar module; and a first heat storage tank connected to the hollow layer disposed on the upper portion of the solar module, wherein the glass plate disposed on the hollow layer and the first absorption tube, and storing the first heat transferred by the first fluid. Hollow layers and glass plates create a greenhouse effect.

Description

Solar hybrid power generation device {SOLAR-PHOTOVOLTAIC/SOLAR-THERMAL HYBRID GENERATING APPARATUS}

The present invention relates to a photovoltaic hybrid power generation device. More particularly, the present invention relates to a solar-thermal hybrid power generation device capable of simultaneously producing electric energy using sunlight and thermal energy using solar heat.

A method of using solar energy is a photoelectric conversion element that generates electrical energy based on sunlight using a solar power technology and a solar heat using technology that generates thermal energy based on solar heat with a heat collecting device (eg, a solar heat collecting plate and a fluid) There is this. Recently, for efficient utilization of solar energy, a solar-thermal hybrid technology capable of simultaneously generating electric energy and thermal energy from solar energy has been in the spotlight. Meanwhile, the surface temperature of the photoelectric conversion element may increase in the process of generating thermal energy by collecting solar heat. When the surface temperature of the photoelectric conversion element rises, the efficiency of the photoelectric conversion element generating electrical energy may decrease, and the lifespan of the photoelectric conversion element may be shortened. Accordingly, a means for lowering the surface temperature of the photoelectric conversion element at the same time while using solar heat appropriately is required.

An object of the present invention is to provide a solar-thermal hybrid power generation device capable of simultaneously producing electric energy using sunlight and thermal energy using solar heat. However, the object of the present invention is not limited to the above-mentioned purpose, and may be variously expanded without departing from the spirit and scope of the present invention.

In order to achieve the object of the present invention, a photovoltaic hybrid power generation device according to embodiments of the present invention includes a photovoltaic module including a plurality of photoelectric conversion elements for generating electricity by receiving sunlight, a lower portion of the photovoltaic module A solar heat collecting plate that absorbs the first heat corresponding to solar heat, is disposed between the photovoltaic module and the solar heat collecting plate, and an adhesive layer that integrates the solar module and the solar heat collecting plate, placed under the solar heat collecting plate a first absorption tube through which a first fluid transferring the first heat absorbed by the solar heat collecting plate flows, the first absorption tube is disposed to surround the first absorption tube, and the loss of the first heat transferred by the first fluid Insulation to prevent the, a hollow layer disposed on top of the solar module, a glass plate disposed on the top of the hollow layer and connected to the first absorption tube, and store the first heat transferred by the first fluid and a first heat storage tank, wherein the hollow layer and the glass plate may generate a greenhouse effect.

According to an embodiment, the photovoltaic hybrid power generation device may further include a second absorption tube disposed inside the hollow layer and through which a second fluid for transferring the second heat generated by the greenhouse effect flows. .

In an embodiment, the second absorption pipe may be connected to the first heat storage tank, and the first heat storage tank may further store the second heat transferred by the second fluid.

According to an embodiment, the first and second fluids may transfer third heat generated as the photoelectric conversion elements perform photoelectric conversion to the first heat storage tank.

According to an embodiment, the photovoltaic hybrid power generation device may further include a second heat storage tank connected to the second absorption tube and storing the second heat transferred by the second fluid.

According to an embodiment, the first fluid transfers third heat generated as the photoelectric conversion elements perform photoelectric conversion to the first heat storage tank, and the second fluid transfers the third heat to the second heat storage tank. It can be transferred to the thermal storage tank.

According to an embodiment, the sunlight may be guided to the photoelectric conversion elements by being refracted by the second absorption tube and the second fluid.

According to an embodiment, the cross-section of the second absorption tube has a polygonal or circular shape for refracting the sunlight to be guided to the photoelectric conversion element, and the second fluid is the light from the photoelectric conversion element. It may have a refractive index to be guided to each.

According to an embodiment, when viewed from the top of the solar module, the second absorption tube may not overlap the photoelectric conversion elements.

According to an embodiment, a pump disposed between the first heat storage tank and the solar heat collector may be further included, wherein the first and second fluids may flow in a direction opposite to a direction of gravity by the pump.

The photovoltaic hybrid power generation device according to embodiments of the present invention may simultaneously generate electric energy and thermal energy from sunlight and solar heat by integrating a photovoltaic module and a solar heat collecting plate.

In addition, the photovoltaic hybrid power generation device further stores not only the first heat corresponding to solar heat, but also the second heat generated by the hollow layer and the glass plate and the third heat generated as the photoelectric conversion element performs photoelectric conversion, Electric energy generation efficiency and thermal energy generation efficiency can be increased.

Furthermore, by separately providing a first heat storage tank for storing a portion of the first heat and a third heat and a second heat storage tank for storing a portion of the second heat and the third heat, the solar hybrid power generation device generates thermal energy more efficiently so it can be heated.

However, the effects of the present invention are not limited to the above-described effects, and may be variously expanded without departing from the spirit and scope of the present invention.

1 is a view showing a solar-thermal hybrid power generation device according to embodiments of the present invention.
FIG. 2 is a cross-sectional view taken along line I-I' of FIG. 1 .
3 is a view showing a solar-thermal hybrid power generation device according to other embodiments of the present invention.

With respect to the embodiments of the present invention disclosed in the text, specific structural or functional descriptions are only exemplified for the purpose of describing the embodiments of the present invention, and the embodiments of the present invention may be embodied in various forms. It should not be construed as being limited to the embodiments described in .

Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms may be used for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle. Other expressions describing the relationship between elements, such as "between" and "immediately between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate that the described feature, number, step, operation, component, part, or combination thereof exists, and is intended to indicate that one or more other features or numbers are present. , it is to be understood that it does not preclude the possibility of the presence or addition of steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as meanings consistent with the context of the related art, and unless explicitly defined in the present application, they are not to be interpreted in an ideal or excessively formal meaning. .

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The same reference numerals are used for the same components in the drawings, and repeated descriptions of the same components are omitted.

1 is a view showing a solar-thermal hybrid power generation device according to embodiments of the present invention, FIG. 2 is a cross-sectional view taken along line I-I' of FIG.

1 and 2 , a photovoltaic hybrid power generation device 1000_1 may include a photovoltaic panel PNL, a first heat storage tank 710 , and a first pump 910 .

The photovoltaic panel (PNL) includes a photovoltaic module 100 , a solar heat collecting plate 200 , an adhesive layer 300 , a first absorption tube 410 through which a first fluid 510 flows, and a second fluid 530 through which a second fluid 530 flows. 2 may include an absorption tube 430 , a heat insulating material 600 , a hollow layer 810 , and a glass plate 830 . The solar panel PNL extends in a fourth direction D4 between a first direction D1 perpendicular to the ground and a second direction D2 parallel to the ground, and the solar panel PNL includes a SP) and solar heat (ST) may be incident.

The photovoltaic module 100 may include a photoelectric conversion element 110 that generates electricity by receiving sunlight SP. That is, the photoelectric conversion element 110 may convert light provided from sunlight SP into electricity by performing photoelectric conversion. To this end, the photoelectric conversion element 110 includes a substrate, a cathode layer, an absorption layer 115 (eg, a p-type semiconductor layer), a buffer layer 111 , and a window layer 113 (eg, an n-type semiconductor layer). , may include an anode layer.

The substrate may be a glass substrate, a ceramic substrate, a stainless steel substrate, a metal substrate, a polymer substrate, a polyimide substrate, or the like.

The cathode layer may be disposed on the substrate. The sunlight SP reflected from the cathode layer may be incident on the absorption layer 115 , and for this purpose, the cathode layer may be a reflective electrode layer that reflects sunlight SP. The cathode layer may be formed of molybdenum (Mo), nickel (Ni), copper (Cu), or the like.

The absorption layer 115 may be disposed on the cathode layer. The absorption layer 115 is a p-type semiconductor layer and may form a p-n junction with the window layer 113 which is an n-type semiconductor layer. Accordingly, when sunlight SP is incident on the window layer 113 and the absorption layer 115 , a potential difference is generated, whereby the photoelectric conversion element 110 may perform photoelectric conversion.

In an embodiment, the buffer layer 111 may be disposed on the absorption layer 115 . When the absorption layer 115 and the window layer 113 form a pn junction, since the difference in energy band gap between the materials constituting the absorption layer 115 and the window layer 113 is large, the buffer layer (111) may be disposed between the absorption layer 115 and the window layer 113 to form a good bonding between the absorption layer 115 and the window layer 113. In another embodiment, the buffer layer 111 may be selectively removed.

The window layer 113 may be disposed on the buffer layer 111 . The window layer 113 is an n-type semiconductor layer and may form a p-n junction with the absorption layer 115 which is a p-type semiconductor layer. Accordingly, when sunlight SP is incident on the window layer 113 and the absorption layer 115 , a potential difference is generated, whereby the photoelectric conversion element 110 may perform photoelectric conversion.

The anode layer may be disposed on the window layer 113 . The sunlight SP may be incident to the window layer 113 through the anode layer, and for this, the anode layer may be a transparent electrode layer that transmits the sunlight SP. The anode layer may be formed of zinc oxide (ZnO) or the like.

Meanwhile, the sunlight SP is the first sunlight SP_1 incident on the photoelectric conversion element 110 through the glass plate 830 and the hollow layer 810 , the glass plate 830 , the hollow layer 810 , and the second It may include the second sunlight SP_2 incident to the photoelectric conversion element 110 through the absorption tube 430 and the second fluid 530 . As the second sunlight SP_2 is incident on the photoelectric conversion element 110 , the photoelectric conversion element 110 may have higher electricity production efficiency than the same sunlight SP. A detailed description thereof will be provided later.

In addition, the solar module 100 may further include an encapsulant 130 and a support plate 150 . The encapsulant 130 may be disposed above and below the photoelectric conversion element 110 , respectively. The encapsulant 130 may protect the solar module 100 from environmental factors (eg, penetration of moisture or air). To this end, the encapsulant 130 may be made of EVA (ethylene-vinyl acetate copolymer). The support plate 150 may be disposed under the encapsulant 130 to support components disposed on the support plate 150 .

Meanwhile, the photovoltaic hybrid power generation device 1000_1 may further include an inverter, and the inverter may convert direct current electricity generated by the photovoltaic module 100 into alternating current electricity that can be used in daily life.

The solar heat collecting plate 200 may be disposed under the solar module 100 . The solar heat collecting plate 200 may absorb the first heat corresponding to the solar heat ST. To this end, the solar heat collecting plate 200 may be formed to have an area substantially equal to the area of the solar module 100 , or may be formed to have an area greater than that of the solar module 100 .

The adhesive layer 300 may be disposed between the photovoltaic module 100 and the solar heat collecting plate 200 to integrate the photovoltaic module 100 and the solar heat collecting plate 200 . To this end, the adhesive layer 300 may include an adhesive material such as an epoxy resin 300 .

The photovoltaic hybrid power generation device 1000_1 integrates the photovoltaic module 100 and the solar heat collecting plate 200 through the adhesive layer 300 , thereby simultaneously generating electrical energy and thermal energy from the sunlight SP and the solar heat ST can do.

The first absorption tube 410 may be disposed under the solar heat collecting plate 200 . Also, the first absorption tube 410 may be connected to the first heat storage tank 710 provided outside the solar panel PNL. In an embodiment, the first absorption tube 410 may have a circular cross-section. In another embodiment, the first absorption tube 410 may have a cross-section of a semicircular shape with an open upper surface or an inverted trapezoidal cross-section with an open upper surface.

The first fluid 510 may flow under the solar heat collecting plate 200 through the first absorption tube 410 . As the first fluid 510 flows under the solar heat collecting plate 200 , the first fluid 510 may receive the first heat absorbed by the solar heat collecting plate 200 . Also, the first fluid 510 may receive a portion of the third heat generated as the photoelectric conversion element 110 performs the photoelectric conversion. The first fluid 510 provided with a portion of the first heat and the third heat may flow to the first heat storage tank 710, and accordingly, the first heat storage tank 710 may store a portion of the first heat and the third heat. .

The first heat storage tank 710 may be provided outside the solar panel PNL. In addition, a first pump 910 for circulation of the first fluid 510 may be further provided between the first thermal storage tank 710 and the solar panel PNL. For example, as the first pump 910 applies pressure to the first fluid 510 , the first fluid 510 moves in a direction opposite to the direction of gravity (eg, the first direction D1 or the fourth direction). (D4)) can flow.

The insulator 600 may be disposed to surround the first absorption tube 410 to prevent loss of the first heat. The insulating material 600 may be made of a material having a sufficiently low thermal conductivity, and in one embodiment, the insulating material 600 may be composed of glass wool. The frame 850 is disposed under the heat insulating material 600 and may be formed of copper (Cu), aluminum (Al), or the like. The frame 850 may be disposed at the bottom of the photovoltaic composite panel PNL to support components disposed on the frame 850 .

The hollow layer 810 may be disposed on the solar module 100 . The hollow layer 810 may be a layer for providing a space between the solar module 100 and the glass plate 830, and may have a thickness of approximately 1 cm. The glass plate 830 may be disposed on the hollow layer 810 . The glass plate 830 may be disposed on the uppermost portion of the solar panel PNL to finish the solar panel PNL together with the frame 850 . In addition, the hollow layer 810 and the glass plate 830 may be made of a transparent material to transmit sunlight SP and solar heat ST to the solar module 100 and the solar heat collecting plate 200, respectively.

Meanwhile, a greenhouse effect may occur due to the hollow layer 810 and the glass plate 830 . That is, a greenhouse effect may occur inside the solar panel PNL by the hollow layer 810 and the glass plate 830 . And, due to the greenhouse effect, second heat may be generated in the solar panel PNL.

The second absorption tube 430 may be disposed inside the hollow layer 810 . Also, the second absorption tube 430 may be connected to the first heat storage tank 710 provided outside the solar panel PNL.

The second fluid 530 may flow through the second absorption tube 430 . As the second fluid 530 flows inside the hollow layer 810 , the second fluid 530 may receive the second heat generated by the greenhouse effect. In addition, as the second fluid 530 flows over the solar module 100 , the second fluid 530 may receive a portion of the third heat. The second fluid 530 provided with a portion of the second heat and the third heat may flow to the first heat storage tank 710, and accordingly, the first heat storage tank 710 may store a portion of the second heat and the third heat. .

In an embodiment, the first fluid 510 and the second fluid 530 may be mixed in the first heat storage tank 710 . To this end, the first absorption tube 410 and the second absorption tube 430 may be connected to the outside of the solar panel PNL. For example, as shown in FIG. 1 , after the first absorption tube 410 and the second absorption tube 430 are separated between the first pump 910 and the solar panel PNL, the solar panel It may be connected between the PNL and the first heat storage tank 710 . Accordingly, the first fluid 510 and the second fluid 530 may be substantially the same fluid.

Meanwhile, sunlight SP passing through the glass plate 830 may be refracted by the second absorption tube 430 and the second fluid 530 . Using this, the sunlight SP may be guided to the photoelectric conversion element 110 by the second absorption tube 430 and the second fluid 530 .

Specifically, the sunlight SP may include the first sunlight SP_1 directed toward the photoelectric conversion element 110 and the second sunlight SP_2 not directed toward the photoelectric conversion element 110 . The first sunlight SP_1 may pass through the glass plate 830 and the hollow layer 810 to be incident on the photoelectric conversion element 110 . In addition, the second sunlight SP_2 may be refracted by the second absorption tube 430 and the second fluid 530 to be incident on the photoelectric conversion element 110 . To this end, when viewed from the top of the photovoltaic module 100 , the second absorption tube 430 is disposed so as not to overlap the photoelectric conversion element 110 to have a circular shape or a polygonal shape with an open bottom (eg, trapezoid). may have, and the second fluid 530 is selected as a fluid having an appropriate refractive index for injecting the second sunlight SP_2 into the photoelectric conversion element 110 in consideration of the cross-sectional shape of the second absorption tube 430 . can be

As such, in the solar hybrid power generation device 1000_1 , the second fluid 530 transfers the second heat generated by the hollow layer 810 and the glass plate 830 to the first heat storage tank 710 , so that the first The heat stored in the heat storage tank 710 may be increased. In addition, the first and second fluids 510 and 530 may further increase heat stored in the first heat storage tank 710 by transferring the third heat to the first heat storage tank 710 , and photoelectric conversion. By reducing the surface temperature of the device 110 , the photoelectric conversion efficiency of the photoelectric conversion device 110 may be increased.

3 is a view showing a solar-thermal hybrid power generation device according to other embodiments of the present invention.

2 and 3 , the photovoltaic hybrid power generation device 1000_2 includes a solar panel PNL, a first fluid 510 , a second fluid 530 , a first heat storage tank 710 , and a first pump. 910 , a second heat storage tank 730 , and a second pump 930 may be included. However, the photovoltaic hybrid power generation device 1000_2 is substantially the same as the photovoltaic hybrid power generation device 1000_1 described with reference to FIGS. 1 and 2 except for the second heat storage tank 730 and the second pump 930 . Since they are the same, the second heat storage tank 730 and the second pump 930 will be described in detail below.

The second heat storage tank 730 may be provided outside the solar panel PNL. The second fluid 530 circulates through the second heat storage tank 730 and the solar panel PNL, and the first heat corresponding to the solar heat ST and generated by the hollow layer 810 and the glass plate 830 A second row may be provided. That is, the second heat storage tank 730 may store the first heat and the second heat transmitted by the second fluid 530 . In addition, a second pump 930 for circulation of the second fluid 530 may be further provided between the second heat storage tank 730 and the solar panel PNL.

That is, the photovoltaic hybrid power generation device 1000_2 may separately include a first heat storage tank 710 through which the first fluid 510 flows and a second heat storage tank 730 through which the second fluid 530 flows. Accordingly, a portion of the third row and the first heat are stored in the first thermal storage tank 710 by the first fluid 510 , and another part of the third row and the second heat are stored by the second fluid 530 . 2 may be stored in the thermal storage tank 730 . The photovoltaic hybrid power generation device 1000_2 may further include a second heat storage tank 730 to more efficiently generate thermal energy.

In the foregoing, although the description has been made with reference to exemplary embodiments of the present invention, those of ordinary skill in the art can use the present invention within the scope not departing from the spirit and scope of the present invention as set forth in the claims below. It will be understood that various modifications and variations are possible.

The present invention can be widely applied to efficient renewable energy production technology. On the other hand, although the above has been described with reference to exemplary embodiments of the present invention, those of ordinary skill in the art will present the present invention within the scope not departing from the spirit and scope of the present invention described in the claims below. It will be understood that various modifications and changes are possible.

1000_1, 1000_2 : Solar power hybrid power generation device
PNL : Solar panel SP : Solar
ST: Solar 100: Solar module
200: solar heat collecting plate 300: adhesive layer
410: first absorption tube 430: second absorption tube
510: first fluid 530: second fluid
600: insulation material 710: first heat storage tank
730: second heat storage tank 810: hollow layer
830: glass plate

Claims (10)

a photovoltaic module including a plurality of photoelectric conversion elements that receive sunlight to generate electricity;
a solar heat collecting plate disposed under the solar module and absorbing first heat corresponding to solar heat;
an adhesive layer disposed between the photovoltaic module and the solar heat collecting plate and integrating the photovoltaic module and the solar heat collecting plate;
a first absorption tube disposed under the solar heat collecting plate and through which a first fluid transferring the first heat absorbed by the solar heat collecting plate flows;
an insulating material disposed to surround the first absorption tube and preventing loss of the first heat transmitted by the first fluid;
a hollow layer disposed on the solar module;
a glass plate disposed on the hollow layer; and
and a first heat storage tank connected to the first absorption tube and storing the first heat transferred by the first fluid,
The hollow layer and the glass plate are solar hybrid power generation device, characterized in that generating a greenhouse effect. According to claim 1,
The solar hybrid power generation device, which is disposed inside the hollow layer, and further comprises a second absorption tube through which a second fluid for transferring the second heat generated by the greenhouse effect flows. According to claim 2, wherein the second absorption tube is connected to the first heat storage tank, the first heat storage tank is solar hybrid, characterized in that further storing the second heat transferred by the second fluid. power generation device. The solar hybrid power generation device of claim 3, wherein the first and second fluids transfer third heat generated as the photoelectric conversion elements perform photoelectric conversion to the first heat storage tank. 3. The method of claim 2,
The photovoltaic hybrid power generation device further comprising a second heat storage tank connected to the second absorption tube and storing the second heat transferred by the second fluid. The method of claim 5, wherein the first fluid transfers third heat generated as the photoelectric conversion elements perform photoelectric conversion to the first heat storage tank, and the second fluid transfers the third heat to the second heat storage tank. Photovoltaic hybrid power generation device, characterized in that delivered to the thermal storage tank. According to claim 2, wherein the solar light is refracted by the second absorption tube and the second fluid, the photovoltaic hybrid power generation device characterized in that each is guided to the photoelectric conversion elements. The method of claim 7, wherein the cross section of the second absorption tube has a polygonal or circular shape for refracting the sunlight to be guided to the photoelectric conversion element,
The second fluid has a photovoltaic hybrid power generation device, characterized in that it has a refractive index such that the sunlight is guided to the photoelectric conversion elements, respectively. According to claim 2, when viewed from the top of the solar module
The photovoltaic hybrid power generation device, characterized in that the second absorption tube does not overlap the photoelectric conversion elements. According to claim 2, further comprising a pump disposed between the first heat storage tank and the solar heat collecting plate,
Solar hybrid power generation device, characterized in that the first and second fluids flow in the opposite direction to the direction of gravity by the pump.

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