KR101220096B1 - Energy conversion apparatus utilizing solar energy - Google Patents

Abstract

The present invention relates to an energy conversion device utilizing solar energy, comprising: a first condenser 10 for condensing sunlight primarily by using a parabolic surface, and condensed sunlight from the first condenser 10; A second photo concentrator 20 for condensing with a car and a photovoltaic module 30 for converting solar light secondaryly collected by the second concentrator 20 into electrical energy are provided.
By using the above-described energy conversion device utilizing the solar energy, the present invention provides a second light collector installed between the plurality of light-converging photovoltaic cells after pre-condensing sunlight using a first light collector having a parabolic surface formed It is possible to improve the solar light collecting ratio by condensing the pre-condensed sunlight by using the light.

Description

Energy conversion device using solar energy {ENERGY CONVERSION APPARATUS UTILIZING SOLAR ENERGY}

The present invention relates to an energy converter using solar energy, and more particularly, to an energy converter using solar energy to improve the concentration ratio of solar energy in the process of converting solar energy into electrical energy.

Fossil fuels are gradually depleted, and research and development of alternative energy technologies that can replace fossil fuels to prevent environmental pollution caused by the use of fossil fuels are being actively conducted.

Among alternative energy, solar energy can be continuously supplied from the sun and it is an ideal alternative energy because it does not generate environmental pollutants.

The technology for the use of such solar energy can be largely divided into a solar light utilization form and a solar heat use form.

Conventional photovoltaic systems use crystalline and thin film silicon and organic material photovoltaic cells for the purpose of producing only electrical energy.

Such a solar power system converts up to 15 energy into electric energy when the total solar energy input to heat conversion efficiency of 12 to 15% is 100.

Therefore, the photovoltaic power generation system according to the prior art has a very low electrical conversion efficiency, and when the temperature rises above 40 ° C, the electrical change efficiency decreases rapidly, and above 80 ° C, the possibility of failure of the internal semiconductor and the structure itself is greatly increased. There was a problem.

In addition, the conventional solar hot water hot water supply and power generation system has been harmed by surplus heat collection in summer.

On the other hand, techniques for improving the light-convergence ratio of sunlight are disclosed in Korean Patent Publication No. 10-2001-0094713 (November 1, 2001, hereinafter referred to as 'Patent Document 1'), US Patent Registration No. 4003638 ( January 18, 1977, hereinafter referred to as "Patent Document 2", US Patent Registration No. 4002499 (published January 11, 1977, hereinafter referred to as "Patent Document 3") and the like.

Recently, multi-junction type photovoltaic cells (MJPV or Concentrated photovoltaic cells (CPV), MJCPV, etc.), which are more efficient than photovoltaic cells applied to conventional solar power generation systems and are advantageous for a condensing environment, Hereafter collectively referred to as a 'condensed photovoltaic cell'.

The light collecting photovoltaic cell is manufactured on the principle of overlapping cells having different characteristics in order to convert more electric energy. As a result, the focusing photovoltaic cell has an electrical conversion efficiency of up to 40% from solar energy. However, condensed photovoltaic cells need to raise the light collection ratio of solar to above 400 in order to achieve high electrical conversion efficiency.

Such a condensed photovoltaic technology is disclosed in US Patent Publication No. 2008-0251122 (published October 16, 2010, Korean Patent Registration No. 10-0983232 (September 20, 2010), hereinafter referred to as 'Patent Document 4'. And the like.

However, the research and development work of the technique which applies the condensing-type photovoltaic cell of patent document 4 to the energy production technique using the conventional photovoltaic which contains patent documents 1-patent document 3 is still in the incomplete state.

In addition, the conventional energy production technology using sunlight increases the focusing ratio for a given marginal incident angle in the state where primary condensing is made on the light collector, is less sensitive to the accuracy of light tracking, and the energy density on the endothermic surface or the light receiving surface. The secondary light collector was installed on the same plane as the primary light collector so as to be uniform.

However, the conventional energy production technology using solar light, which installs primary and secondary light collectors on the same plane, has a limit in improving the light concentrating ratio of solar energy.

Therefore, it is necessary to develop a technology for improving the light-convergence ratio of solar energy by applying a condensed photovoltaic cell to a composite energy device that produces electricity and thermal energy from solar energy.

Republic of Korea Patent Publication No. 10-2001-0094713 (published 1 November 2001) US Patent Registration No. 4003638 (January 18, 1977) US Patent Registration No. 4002499 (January 11, 1977) US Patent Publication No. 2008-0251122 (published 16 October 2010, Korean Patent Registration No. 10-0983232, issued September 20, 2010)

The present invention is to solve the problems as described above, an object of the present invention to provide an energy converter utilizing solar energy to improve the light condensing ratio of the solar energy in the process of converting the solar energy into electrical energy. will be.

Another object of the present invention is an energy conversion device using solar energy to improve the condensing ratio of the solar energy through the first condensing process of pre-condensing solar energy and the second condensing process of the first concentrated solar energy To provide.

Still another object of the present invention is to provide an energy conversion device using solar energy capable of minimizing the height and volume of a light collector that secondaryly collects solar energy.

According to a feature of the present invention for achieving the object as described above, the present invention is a first condensing unit for pre-condensing sunlight using a parabolic surface, secondly condensed sunlight from the first condensing unit And a photovoltaic module for converting solar light secondaryly collected by the second condenser to electrical energy.

The first light collecting unit further includes a horizontal mounting member installed on an upper portion of the first light collecting body, and a pair of vertical mounting members respectively connecting both end portions of the first light collecting body and both ends of the horizontal mounting member. Is a plurality of condensed photovoltaic cells arranged linearly on a focal line corresponding to the center line of the virtual cylinder extending the parabolic surface to convert sunlight collected by the second condenser into electrical energy and the plurality of condensed light on one surface It characterized in that it comprises a printed circuit board on which the photovoltaic cell is mounted.

The second light concentrator may include a plurality of second light concentrators for secondly concentrating solar energy pre-condensed by the parabolic surface of the first light concentrator to each of the plurality of light converging photovoltaic cells provided in the photovoltaic module.

Each of the plurality of second light collectors is characterized in that the parabolic surface is formed in a direction perpendicular to the focal line of the first light collector toward the parabolic surface of the first light collector.

The condensing width of the second condenser corresponds to the interval between the condensing photovoltaic cells, and the solar condensing ratio of the entire first and second condensing portions is the condensing ratio of the first condenser and the condensing portion of the second condenser. It is characterized by being calculated by multiplying the ratio.

The parabolic surface of the second light collecting body may be formed as a single parabolic surface corresponding to a parabolic surface having one focal point.

The parabolic surface of the second condenser may be formed as a composite parabolic surface corresponding to two parabolic surfaces corresponding to two focal points spaced apart from each other by a predetermined distance.

First and second parabolic surfaces corresponding to the two focal points are set in correspondence with the length and cell spacing of the light converging photovoltaic cell or the light condensing width of the second light condenser, which is a combination thereof. Device.

The apparatus may further include a heat exchanger configured to perform heat exchange with the photovoltaic module to cool the photovoltaic module, recover heat energy generated from the photovoltaic module, and discharge heated hot water.

As described above, the present invention pre-condenses sunlight using a first condenser having a parabolic surface, and then condenses the pre-condensed sunlight by using a second condenser provided between a plurality of condensing photovoltaic cells. Solar light collecting ratio can be improved.

In particular, the present invention improves the solar light collecting ratio by providing the first and second light collectors, whereby the installation area of the light collector can be significantly reduced as compared with the case of installing one light collector.

That is, according to the present invention, the second light collector is installed in an idle area between a plurality of light collecting photovoltaic cells arranged at regular intervals on a focal line of the first light collector, so that the solar energy collected by the light collecting area of the second light collector is collected. It has the effect of increasing the condensing ratio by reflecting to adjacent condensing photovoltaic cells.

In addition, according to the present invention, a parabolic surface is formed on the upper surfaces of the first and second light concentrators to condense solar light, thereby reducing the number of condensed photovoltaic cells installed in the photovoltaic module, thereby reducing manufacturing costs.

In addition, the present invention absorbs the sunlight collected by using a condensed photovoltaic cell to produce electrical energy, it is possible to significantly reduce the installation area of the photovoltaic module compared to the case of using a conventional photovoltaic cell, and at the same time utilize the solar energy One can improve the electrical conversion efficiency.

In another aspect, the present invention by converting the solar energy into thermal energy by supplying hot water heated by performing a heat exchange with the photovoltaic module to a heating device, a hot water supply device or a heat storage device, it is also possible to significantly improve the overall energy conversion efficiency.

In addition, the present invention uses a condensed photovoltaic cell with less damage due to temperature rise and lower energy conversion efficiency than a general photovoltaic cell, thereby maintaining a high temperature of hot water discharged from a photovoltaic module and a cooler, thereby effectively providing a hot water supply facility or a heating device. It can apply and can improve the utility of thermal energy.

In addition, the present invention forms a parabolic surface of the second light collecting body by forming a compound parabolic surface corresponding to two parabolic surfaces having a focus spaced apart from each other by a predetermined interval, thereby reducing the height of the parabolic surface of the second light collecting body, The total volume can be minimized.

Accordingly, the present invention has the effect of obtaining a light condensing ratio similar to the case of using a lens or dish-shaped light collector having the same mounting area by condensing sunlight using two light collectors having parabolic surfaces.

1 is a block diagram of an energy converter using solar energy according to an embodiment of the present invention,
2 is a perspective view of the energy converter shown in FIG.
3 is an enlarged perspective view of a second light collecting unit and a photovoltaic module shown in FIG. 2;
4 is a view illustrating an installation state of the first and second light collecting units illustrated in FIG. 2;
5 is a plan view of the second light collector illustrated in FIG. 4;
6 is a front view of the second light collector illustrated in FIG. 4;
7 is a front view of a second light collector applied to an energy conversion device utilizing solar energy according to another embodiment of the present invention.

Hereinafter, an energy converter using solar energy according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an energy converter using solar energy according to a preferred embodiment of the present invention, Figure 2 is a perspective view of the energy converter shown in Figure 1, Figure 3 is a second shown in Figure 2 An enlarged perspective view of the light collecting unit and the photovoltaic module.

4 is a view illustrating an installation state of the first and second light collecting parts illustrated in FIG. 2, and FIGS. 5 and 6 are plan and front views of the second light collecting body illustrated in FIG. 4.

As shown in FIG. 1, an energy conversion device using solar energy according to an exemplary embodiment of the present invention includes a first condenser 10 and a first condenser 10 for condensing sunlight primarily using parabolic surfaces. The photovoltaic module 30 converts the solar light collected by the second light collecting unit 20 to the second and the second light-condensing unit 20 to the electrical and thermal energy.

In addition, the energy conversion device using solar energy according to the preferred embodiment of the present invention performs heat exchange with the photovoltaic module 30 to cool the photovoltaic module 30 and recover thermal energy generated from the photovoltaic module 30. It may further include a heat exchanger 40 for discharging the heated hot water.

As shown in FIGS. 1 and 2, the first condenser 10 may have a parabolic upper surface, and may include a first condenser 11 and a first condenser 11 to condense sunlight. And a pair of vertical mounting members 13 which connect both ends of the horizontal mounting member 12 and the first light collecting body 11 and both ends of the horizontal mounting member 12 to be installed at the top.

The first light concentrator 11 is a reflector that is formed as a parabolic surface having a concave upper surface so as to condense the sun light and reflects it toward a focal line F corresponding to the center line of the virtual cylinder in which the sun extends the parabolic surface. Do it.

As shown in FIGS. 1 and 3, the second light collecting unit 20 includes a plurality of light collecting photovoltaic cells 31 provided with the photovoltaic module 30 for solar energy pre-condensed by the parabolic surface of the first light collecting body 11. ) A plurality of second light concentrators 21 to point converging or line condensing.

That is, the first light concentrator so as to condense the solar light pre-condensed from the first light concentrator 11 to the plurality of light-converging photovoltaic cells 31 installed in the center of the second light concentrator 21. The parabolic surface is formed in a direction perpendicular to the focal line F of the first light concentrator 11 toward the parabolic surface of (11).

As described above, according to the present invention, the second light collector is installed on an idle area between a plurality of light collecting photovoltaic cells arranged at regular intervals on a focal line of the first light collector, and the solar energy is collected by the light collecting area of the second light collector. Reflects to adjacent condensed photovoltaic cells to increase the condensing ratio.

In addition, the present invention improves the condensing ratio of the sunlight by pre-condensing sunlight as parallel rays using the first condenser, and condensing the condensed sunlight again using the second condenser.

For example, in FIG. 4A, an enlarged view of side surfaces of the first and second light collecting units and the photovoltaic module is shown, and in FIG. 4B, the first and second light collecting units and the photovoltaic module are shown. The state in which the plane is enlarged is shown.

4 to 6, when the condensing width D1 of the first condenser 11 is 100 cm and the width d of the condensing photovoltaic cell 31 is 1 cm, the first condenser 11 Assume that the solar concentration ratio is '100'.

And when the length w of the condensed photovoltaic cell 31 is 1 cm, the distance L between each condensed photovoltaic cell 31 on which the second condenser 21 is installed is the length of the condensed photovoltaic cell 31. When installed so as to be four times (w), that is, the light condensing width D2 of the second light collecting body 21 becomes 4 cm, the solar light collecting ratio of the second light collecting body 21 becomes '4'.

Therefore, the first and second condensing units 10 and 20 according to the present embodiment multiply calculate the condensing ratio '100' of the first condenser 10 and '4' which is the condensing ratio of the second condensing unit 20. It has a solar condensation ratio of '400'.

On the other hand, in general, the condensing photovoltaic cell 31 exhibits optimal performance in a condensing ratio of '400 to 500'.

Therefore, in this embodiment, the installation area of the light collector can be reduced by using the first and second light collectors 11 and 21 so as to have an optimal solar light concentrating ratio compared to the case where only one light collector is used.

For example, in the case of using only one light collector, if the width d of the light collecting photovoltaic cell 31 is 1 cm, the light collecting width of the light collector should be about 400 cm to obtain a solar light collecting ratio of '400'. .

However, in the present embodiment, in the case of the condensing photovoltaic cell 31 having the same width d and the length w, the first condenser 11 and the condensing photocell 31 having a condensing width D1 of 100 cm are provided. By using the second light concentrator 21 having a light condensing width D2 of 4 cm, which is four times the length w, the solar light condensing ratio of '400' can be obtained in the same way, thereby significantly reducing the installation area of the light concentrator. You can.

As shown in FIGS. 2 and 3, the photovoltaic module 30 is installed under the horizontal mounting member 12 to absorb solar light that is pre-condensed by the parabolic surface of the first light concentrator 11 to generate electricity and thermal energy. To produce.

To this end, the photovoltaic module 30 includes a plurality of condensed photovoltaic cells 31 and a plurality of condensed photovoltaic cells arranged at regular intervals on a focal line corresponding to the center line of the virtual cylinder pre-condensed by the first condenser 11. And a printed circuit board 32 on which the photovoltaic cell 31 is mounted.

Here, a typical photovoltaic cell only absorbs energy for some wavelength range of solar energy delivered in the form of wavelengths.

On the other hand, the condensed photovoltaic cell 31 absorbs sunlight in a wider wavelength range than a general photovoltaic cell and converts the sunlight into electrical and thermal energy, and transfers the converted thermal energy to the cooling water supplied through the heat exchanger 40.

According to the experimental results, the light collecting photovoltaic cell 31 is composed of three or more layers, so that a general photovoltaic cell composed of one layer may absorb sunlight in a wavelength range in which energy is not absorbed and convert it into electrical energy.

Accordingly, the condensed photovoltaic cell 31 can exhibit about 40% electrical conversion efficiency, nearly three times that of a general photovoltaic cell.

In addition, since the energy conversion efficiency of the light collecting photovoltaic cell 31 is lowered by about 8 to 10% when the temperature is increased by 100 ° C, the reduction rate of the energy conversion efficiency due to the temperature increase of the photovoltaic module 30 is much smaller than that of the general photovoltaic cell. have.

As described above, the present invention can improve the energy conversion efficiency by converting the solar light collected by the first and second light collectors into electric and thermal energy using a plurality of light collecting photovoltaic cells arranged at regular intervals.

The PCB 32 serves to electrically connect the plurality of condensed photovoltaic cells 31 arranged at regular intervals.

In addition, the PCB 32 may effectively transfer heat generated from the plurality of light-collecting photovoltaic cells 31 mounted on the lower surface of the PCB 32 to the heat exchanger 40 coupled to the upper surface of the PCB 32. It may be made of a metal material, such as aluminum or aluminum alloy with excellent thermal conductivity.

On the other hand, when using a general synthetic resin PCB such as epoxy resin, glass epoxy, bakelite resin, phenol resin, the PCB 32 can be easily transferred to the heat exchange unit 40 from the plurality of light-converging photoelectric cells 31 An incision hole (not shown) may be formed by cutting all or a part corresponding to the rear surface of each condensing photovoltaic cell 31.

Here, the insertion hole is formed in the incision hole formed on the lower surface of the cooler of the heat exchanger 40 to be described below.

As described above, the present invention, when using a PCB made of synthetic resin material, by making a cut-out hole in the portion that does not affect the configuration of the electrical circuit on the PCB by directly contacting the condensing photovoltaic cell and the cooler, cooling performance and thermal energy of the condensing photovoltaic cell It is also possible to improve the transfer efficiency.

Although not shown in the drawings, the heat exchanger 40 is a cooler installed on the upper portion of the photovoltaic module 30, a heat exchanger connected to one side of the cooler to release heat transferred from the photovoltaic module, and supplying coolant to the heat exchanger. It comprises a discharge line for discharging the heated hot water by performing a heat exchange in the supply line and the heat exchanger.

The cooler is made of a metal material having high thermal conductivity to receive thermal energy from the photovoltaic module 30.

Such a cooler may be cooled by using a heat pipe filled with a working fluid in the internal space, or by forced convection of a hydrothermal medium such as water.

In addition, the present invention may be utilized by performing heat exchange with the photovoltaic module to transfer the heat energy recovered by the heat exchanger to a heating device, a hot water supply device, or a heat storage tank that stores the heat energy.

Of course, the present invention may be modified to emit heat energy heat exchanged from the photovoltaic module to the outside using a cooler when no heat recovery is required.

For example, the heat pipe may be provided with a channel filled with a working fluid in an internal space, and a wick structure 312 for circulating the working fluid using capillary forces may be provided in the channel. have.

One surface of the cooler may be formed in a shape corresponding to the cutting hole of the PCB 32 made of a synthetic resin material is inserted into the insertion hole (not shown) inserted into the cutting hole.

In particular, the cooler is preferably made as large as possible in the thermal contact area to facilitate heat transfer with the photovoltaic module.

The supply line is connected to a coolant tank or a coolant supply pipe (not shown) to supply coolant to the cooler.

The discharge line is connected to various equipment using hot water such as a heating device or a hot water supply pipe (not shown) to efficiently utilize the thermal energy converted by the photovoltaic module 30.

As described above, the present invention can easily cool the photovoltaic module by installing a cooler on the opposite side where the PCB of the photovoltaic module in which the condensing photovoltaic cells are arranged at regular intervals is installed.

In addition, the present invention can convert the solar energy into electrical energy and thermal energy using a photovoltaic module, and supply the heated hot water by heat exchange with the thermal energy to increase energy utilization as heating or hot water.

In addition, the present invention maintains the temperature of the photovoltaic module in a predetermined temperature range by adjusting the flow rate supplied to the heat exchanger based on the temperature of the photovoltaic module, and at the same time increases the temperature of the hot water discharged from the heat exchanger compared to the general photovoltaic application. As a result, the thermal energy conversion efficiency can be improved.

Next, the coupling relationship of the energy converter using solar energy according to a preferred embodiment of the present invention will be described in detail.

In the energy conversion apparatus using solar energy according to the preferred embodiment of the present invention, the vertical mounting members 13 are respectively installed on upper and lower ends of the first light concentrator 11 whose upper surface is formed as a parabolic surface, and each vertical mounting member 13 is installed. ) Combine the horizontal installation member 12 between the upper end.

After installing the photovoltaic module 30 in which the plurality of condensed photovoltaic cells 31 are arranged linearly under the horizontal mounting member 12, a second condenser formed as a parabolic surface between the condensed photovoltaic cells 31. Install (21).

In this case, the first light collector 11 is installed to be inclined with the ground so that the parabolic surface faces the sun, and the second light collector 21 extends the parabolic surface of the first light collector 11 toward the first light collector 11. It is preferable to be provided in the direction perpendicular to the first condenser 11 on the focal line F corresponding to the center line of one virtual cylinder.

Here, when the photovoltaic module 30 itself has sufficient structural strength, the horizontal mounting member 12 is removed and the photovoltaic module 30 is directly installed between the pair of vertical mounting members 13. Can be.

Subsequently, a cooler is installed on the upper portion of the photovoltaic module 30, and a supply line for supplying cooling water is connected to one side of the cooler, and the hot water heated in the process of performing heat exchange with the photovoltaic module 30 on the other side of the cooler. Connect the discharge line.

On the other hand, the assembled energy conversion device as described above may be installed on the top of the solar tracking device (not shown) to track the position of the sun to rotate continuously in accordance with the tracked position so as to continuously absorb the sunlight.

Next, a method of operating an energy converter using solar energy according to a preferred embodiment of the present invention will be described in detail.

When sunlight is incident on the parabolic surface, the first light concentrator 11 reflects the sun light toward the focal line F corresponding to the center line of the virtual cylinder including the parabolic surface and condenses the light.

Then, the second light concentrator 21 provided at a predetermined interval on the focal line F secondly condenses the pre-condensed sunlight toward the condensed photovoltaic cell using the reflection surface formed as a parabolic surface.

Accordingly, the plurality of condensed photovoltaic cells 31 arranged in the photovoltaic module 30 at regular intervals absorb the secondary condensed sunlight and convert them into electrical and thermal energy.

At this time, the cooler performs heat exchange with the photovoltaic module 30 using the coolant supplied through the supply line.

Thus, the photovoltaic module 30 is cooled by cooling water to maintain a preset temperature range, such as about 45 to 120 ° C., and the discharge line transfers hot water heated in the cooler to a heating device, a hot water supply device, or a heat storage device.

In this process, the energy conversion device using solar energy according to the preferred embodiment of the present invention has an improved energy conversion efficiency as compared to the case of using a conventional photovoltaic cell by using a condensed photovoltaic cell.

For example, assuming that the solar energy incident on a vertical surface of 1 m 2 in sunny weather is 1000 W, a typical photovoltaic cell installed on a vertical surface of 1 m 2 will produce about 150 W of electricity as it has an electrical conversion efficiency of up to 15%. Can be.

On the other hand, the energy conversion device using solar energy according to a preferred embodiment of the present invention by installing a condensing photovoltaic cell having an electrical conversion efficiency of up to 40%, by condensing about 400 times using a light collector 1/1 of 1㎡ It is possible to produce about 400W of electricity by installing a condensed photovoltaic cell of 25 cm 2, i.e., 5 cm in width and length.

That is, the present invention can improve the electricity production by about 2.67 times while reducing the area of the photovoltaic cell to 1/400.

In addition, the present invention can produce about 1,067 times the electricity of a conventional photovoltaic cell using a focusing photovoltaic cell based on the same cell area.

In addition, the present invention may improve efficiency by utilizing solar energy by supplying heated hot water to a heating device or a hot water device by performing heat exchange with a photovoltaic module.

Here, the present invention is able to perform a normal function even at 45 ~ 120 ℃ temperature higher than the conventional photovoltaic cell by using a condensed photovoltaic cell is advantageous to provide a hot water supply function by supplying hot water at 35 ℃ or more.

Meanwhile, in the present exemplary embodiment, parabolic surfaces are formed in the first light collector 11 and the second light collector 21, respectively.

Here, the first light concentrator 11 must set the inclination of the paraboloid to be small so as to reflect sunlight incident on a large area.

On the other hand, the second light concentrator 21 inclines the slope of the paraboloid to secondly condense the solar light pre-condensed by the first light concentrator 11 to the light converging photovoltaic cell 31 installed at the center. Must be set very large relative to the slope of).

In particular, in order to increase the solar light collecting ratio by using both parabolic surfaces of the second light collecting body 21, the light collecting type photovoltaic cell 21 must be set higher than the parabolic focus of the second light collecting body 21.

As such, in order to accurately calculate the parabolic focus of the second light collecting body 21 and install the light collecting photovoltaic cell 31 at a position higher than the calculated focus, a very difficult and complicated work process must be performed.

In addition, when the parabolic slope of the second light collector 21 is increased, the total volume of the second light collector 21 is increased as the height of the second light collector 21 is increased.

Accordingly, in the present invention, the parabolic surface of the second light collecting body 21 may be formed as a single parabolic surface, but may be formed as a composite parabolic surface to correspond to two parabolic surfaces having different focal points.

For example, FIG. 7 is a front view of a second light collector that is applied to an energy converter using solar energy according to another embodiment of the present invention.

As shown in FIG. 7, an energy conversion device utilizing solar energy according to another embodiment of the present invention has focal points F1 and F2 spaced apart from each other by a predetermined distance from both parabolic surfaces of the second light collector 22. It is formed as a composite parabolic surface corresponding to two parabolic surfaces P1 and P2.

That is, one side of the second light collecting body 22, as seen in FIG. 7, the left parabolic surface is formed to correspond to the first parabolic surface P1 in contact with the right side of the light converging photovoltaic cell 31.

The parabolic surface 22 of the second light collecting body 22 is formed on the second parabolic surface P2 formed by the second focal point F2 at a position spaced apart from the focal point F1 of the first parabolic surface P1 to the left by a predetermined interval. It is formed to correspond.

Here, the first parabolic surface P1 and the second parabolic surface P2 have a length w and a cell spacing L of the light converging photovoltaic cell 31 or the light condensing width D2 of the second light condenser 21 that combines them. It may be set to correspond.

For example, when the cell spacing L is equal to the length w of the light converging photovoltaic cell 31, the solar light collecting ratio of the second light collecting body 22 is doubled.

As described above, the present invention forms the parabolic surfaces of the second light concentrator into composite paraboloid surfaces corresponding to two paraboloids having a focus spaced apart from each other by a predetermined distance, thereby reducing the height of the parabolic surface of the second light concentrator and The total volume can be minimized.

In general, a light collecting body using a parabolic surface has a lower light collecting ratio than a lens or dish-shaped light collecting body.

However, according to the present invention, by condensing sunlight using two light collecting bodies having parabolic surfaces, a light collecting ratio similar to the case of using a lens or dish-shaped light collecting body having the same mounting area can be obtained.

Through the above-described process, the present invention pre-condenses the sunlight using the first condenser having a parabolic surface, and then the pre-condensed sunlight using the second condenser installed between the plurality of condensing photovoltaic cells. By condensing again, the solar light collecting ratio can be improved.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

The present invention provides a technique for improving the solar light collecting ratio by providing a paraboloid-shaped first condenser, a photovoltaic module having a plurality of condensed photovoltaic cells arranged at regular intervals, and a second condenser having a parabolic surface formed between the plurality of condensed photovoltaic cells Applies to

In addition, the present invention is applied to a technology for improving the energy conversion efficiency by converting the solar energy into electricity and heat energy complex.

Accordingly, the present invention can be applied to various fields such as green homes, general houses, group residential facilities, public facilities, industrial renewable energy systems, airport facilities, port facilities, and space generators.

10: first light concentrator 11: first light concentrator
12: horizontal mounting member 13: vertical mounting member
20: second condenser 21, 22: second condenser
30: photovoltaic module 31: condensing photocell
32: printed circuit board 40: heat exchanger

Claims (9)

A first condenser 10 having an upper surface formed as a parabolic surface and condensing sunlight primarily using a first condenser 11 for condensing sunlight;
A second condenser 20 for condensing solar light pre-condensed by the first condenser 10;
It includes a photovoltaic module 30 for converting the solar light secondary collected in the second light collecting unit 20 into electrical energy,
The photovoltaic module 30 has a focal line corresponding to the center line of the virtual cylinder extending the parabolic surface of the first light concentrator 11 so as to convert the solar light collected by the second light concentrator 20 into electrical energy. F) a plurality of condensed photovoltaic cells 31 arranged linearly on and
An energy conversion device utilizing solar energy, characterized in that it comprises a printed circuit board (32) on which one of the plurality of light collecting photovoltaic cells (31) is mounted. The method of claim 1,
The first light collecting part 10 is a horizontal installation member 12 is installed on the upper portion of the first light collecting body 11 and
Energy conversion device utilizing solar energy, characterized in that it further comprises a pair of vertical mounting member (13) connecting the both ends of the first light collector (11) and both ends of the horizontal mounting member (12), respectively. The method of claim 2,
The second condenser 20 is a plurality of secondary condensed solar energy pre-condensed by the parabolic surface of the first condenser 11 to each of the plurality of condensed photovoltaic cells 31 provided in the photovoltaic module 30 An energy converter using solar energy, characterized in that it comprises a second collector (21, 22) of. The method of claim 3,
Each of the plurality of second light collectors 21 is characterized in that the parabolic surface is formed in a direction perpendicular to the focal line F of the first light collector 11 toward the parabolic surface of the first light collector 11. Energy converter using energy. The method of claim 3,
The condensing width of the second condenser 21 corresponds to the interval between the condensing photovoltaic cells 31,
The solar light collecting ratio of the entire first and second light collecting units 10 and 20 is calculated by multiplying the light collecting ratio of the first light collecting unit 10 by the light collecting ratio of the second light collecting unit 20. Energy converter using solar energy. The method of claim 3,
The parabolic surface of the second light collector 21 is formed of a single parabolic surface corresponding to a parabolic surface having one focal point. The method of claim 3,
The parabolic surface of the second light collector 22 is formed of a composite parabolic surface corresponding to two focal points F1 and F2 spaced apart from each other by a predetermined interval. The method of claim 7, wherein
The first and second parabolic surfaces P1 and P2 corresponding to the two focal points F1 and F2 may have a length w and a cell spacing L of the light converging photovoltaic cell 31 or the second light collecting body including the sums thereof. Energy conversion device using solar energy, characterized in that the set corresponding to the condensing width (D2) of (21). The method according to any one of claims 1 to 8,
Further comprising a heat exchanger 40 for cooling the photovoltaic module 30 by performing heat exchange with the photovoltaic module 300, recovering thermal energy generated by the photovoltaic module 30, and discharging the heated hot water. Energy converter using solar energy.

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