KR100749504B1 - Sunlight reflective equipment applied to a solar-heat development system - Google Patents

Abstract

A sunlight reflecting apparatus for a solar power generation system is provided to stably transmit sunlight into a heat conversion unit for a long time when the sunlight condensed through a condensing unit is transmitted to the heat conversion unit. A sunlight reflecting apparatus for a solar power generation system includes a reflecting unit(100) and a sunlight reflection guide unit(200). The reflecting unit includes a plurality of reflecting plates, and is rotated in vertical and horizontal directions by the sunlight reflecting guide unit to control irradiated sunlight to be always reflected to a condensing lens of a condensing unit(300). The sunlight reflection guide unit includes a guide rail(210) for a sunlight track, a fixing member, at least one fixing frame(230), a driving member for vertical rotation, a moving member(250), and a driving member for horizontal rotation. The fixing member fixes the reflecting unit. The fixing frame is connected and supported to a rear surface of the fixing member.

Description

Sunlight reflective equipment applied to a solar-heat development system}

1 is a view showing a conventional reflector arranged around a light collecting device of a solar power generation system;

FIG. 2 shows the reflecting range of each reflecting plate constituting a conventional reflector capable of correctly reflecting sunlight emitted from the sun toward a conventional condenser according to a predetermined time after sunrise, a predetermined time during noon, and a predetermined time before sunset. drawing,

Figure 3 is a schematic perspective view showing a solar reflector applied to the solar power system of the present invention,

Figure 4 is an enlarged perspective view of the main portion to enlarge the portion A of FIG.

Figure 5 is a side view showing a solar reflector applied to the solar power system of the present invention,

6 is a detailed configuration diagram showing in detail the light collecting portion of the configuration of FIG.

7a to 7c is a solar light reflector applied to the solar power generation system of the present invention according to the incident angle of the sunlight irradiated differently by the sun proceeding direction between sunrise and sunset as the horizontal rotational movement and vertical rotational movement This is a state diagram showing the process of controlling the reflection of sunlight toward the collecting lens.

<Code Description of Main Parts of Drawing>

100: reflecting unit 110: reflecting plate

200: solar light reflection guide portion 210: solar tracking guide rail

220: fixed member 221: fixed frame

222: fixing plate 230: holder

240: drive member for vertical rotation movement 241: drive motor for vertical rotation movement

242: screw 250: moving member

251: moving body 252: rail wheel

260: drive member for horizontal rotation movement 300: light collecting part

310: condenser lens 320: body

330: reflector 340: heat absorbing film

400: reference plate 500: rotating body

600: connecting rod 700: heat conversion unit

The present invention relates to a solar power generation system, and more particularly, to a solar reflector applied to a solar power generation system with a small installation area and maximized solar reflection efficiency.

In general, solar power generation system is a technology that converts solar energy into electrical energy, and the type of solar power generation system is a large scale (central receiver solar thermal electric power system) depending on the scale of solar power generation (hundreds of kW to several tens of MW). ), Mid-sized (hundreds to hundreds of kW) of distributed solar thermal electric power system, and small scale (several to hundreds of W) stand-alone system.

Among these, a large centralized system includes a reflector composed of a plurality of reflectors reflecting the irradiated sunlight, and a plurality of concentrated sunlight when a plurality of sunlight reflected from the reflector is concentrated in one place. A light condenser for condensing the light, and an energy conversion device for generating steam by sunlight condensed by the light concentrating device and concentrated at a high temperature, and driving electric turbines through the generated steam.

Since the solar power generation system to which the centralized system is applied has low energy density of solar heat and changes in season and time, the condensing technology for condensing a plurality of sunlight reflected from the reflector toward the condenser is most important.

The solar power generation scale is a large scale, Figure 1 is a view showing a conventional reflector arranged around the light collecting device of the solar power generation system.

As shown in the drawing, a conventional reflector includes a plurality of reflecting plates arranged as an annular band around the concentrator so that the reflected sunlight can be incident toward the condenser as much as possible. The annular band has a structure arranged as if it is surrounded by layers.

At this time, each of the reflectors are arranged in a state inclined at a unique angle, the reason for being arranged at a unique angle in this way is because the sun's altitude (spatial coordinates) according to the direction of the sun, the direction in which the sun moves from sunrise to sunset This is because the incident light of the sunlight irradiated to each reflecting plate is different depending on the altitude of the sun.

For this reason, the conventional reflector is to allow the high-temperature concentrated sunlight to be reflected toward the light concentrator according to each altitude where the sun is located from sunrise to sunset for large-scale solar power generation.

However, the conventional condensing device applied to the solar thermal power generation system focuses on the condensing device so that even if the incident angle of the irradiated sunlight is changed in accordance with the solar traveling direction from sunrise to sunset, the hot concentrated sunlight is always reflected toward the condenser. Since a plurality of reflecting plates should be installed like an annular band, there is a problem in that the installation area becomes huge.

Referring to FIG. 2, the reflector group belonging to the first incident sunlight reflecting range RS1 is inclined at a unique angle so that the sunlight irradiated for a predetermined time after sunrise is reflected toward the condenser 1 when the sun is reflected. The reflector group belonging to the second incident solar reflection range RS2 is inclined at a unique angle so that the sunlight irradiated for a certain period of time during the midday sun is reflected toward the condenser 1 when the sun is reflected. The reflector group belonging to the third incident light reflection range RS3 is inclined at a unique angle so that the sun light irradiated for a predetermined time before sunset can be reflected toward the light concentrator 1 when the sun is reflected. It is in a deployed state.

As a result, when the sun moves in the advancing direction for a predetermined time after sunrise, the sunlight irradiated toward the incident sunlight reflecting range RS1 is correctly reflected toward the condenser 1, but the remaining incident sunlight reflecting ranges RS2 and RS3 The other reflector groups belonging to the light reflect toward the other side than the light collecting device 1 side.

Thereafter, when the predetermined time passes after sunrise, the altitude of the sun is also increased to move to the middle of the midday, and thus the incident sunlight reflection range is also the second incident incident light at the first incident sunlight reflection range RS1. The solar light is moved toward the solar light reflecting range RS2 to reflect the sunlight irradiated to the remaining incident light reflecting range to the other side than the light collecting device 1 side.

This applies equally to a predetermined time before sunset as the predetermined time passes during the midday, and as a result, the number of reflectors that correctly reflects the sunlight irradiated until sunset after sunrise is ¼ of the total number of reflectors. It also leads to a problem that the reflection efficiency is lowered to ˜⅓.

The present invention is to solve the problems of the prior art, an object of the present invention is to provide a solar reflector that is applied to a solar power generation system that requires a small installation area, the solar reflection efficiency is maximized.

As a technical idea for achieving the present invention, the solar light reflecting apparatus applied to the solar power generation system of the present invention includes a plurality of reflecting plates that are inclined at a predetermined angle so as to be reflected toward the condenser lens of the condenser when the solar light emitted after sunrise is reflected. The reflector and the reflector are fixed, and each of the sunlight reflected through the plurality of reflectors inclined at the predetermined angle by horizontally moving and vertically rotating the reflector in accordance with the movement of the sun condenses the condenser at all times. It is made of a solar light induction portion for controlling to be reflected toward the lens.

The plurality of reflecting plates are arranged in a horizontal and vertical arrangement, but are arranged alternately between neighboring reflecting plates.

The solar light guide portion is a guide rail for tracking the sun, a fixing member for fixing the reflecting portion, one or more fixing rods supported on the back of the fixing portion, and vertical to rotate the fixing portion connected to the fixing rod up and down It is composed of a rotational movement driving member, a movable member which is installed at the lower end of the stator so that the reflector is rotated left and right along the guide rail for tracking the sun, and a horizontal rotational movement driving member for driving the movable member.

The condenser may be installed on the reference plate and the reference plate so as to be rotated at the same speed along the reflecting part rotated to the left and right, and the rotatable body having the condenser fixed on the upper surface thereof. It includes a connecting rod for connecting between one or more moving members.

The condenser may include a condenser lens and two or more tubes of different diameters overlapping each other so that the length can be adjusted in multiple stages, and a body in which the condenser lens is superposed on the inner circumference of the smaller diameter tube of the two tubes; Nested at the periphery of the two or more tubes constituting the body has a width smaller than the inner diameter of the smaller diameter tube, the two or more polygonal tubes of different widths are overlapped, the length can be adjusted in multiple stages, the width of the two polygonal tube One end of the small polygonal tube is a heat absorbing film formed on the side wall of the heat conversion portion to block the open side of the polygonal tube of the two or more polygonal tube constituting the reflector plate fixed to the side of the condensing lens and the larger polygonal tube Is done.

The endothermic film uses a black amorphous micropowder material produced by incomplete combustion or thermal decomposition of an organic material.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a schematic perspective view showing a solar reflector applied to the solar power system of the present invention, Figure 4 is an enlarged perspective view of the main portion enlarged portion A of Figure 3, Figure 5 is applied to the solar power system of the present invention Figure 6 is a side view showing a solar reflector, Figure 6 is a detailed configuration diagram showing the condensing portion in detail of the configuration of Figure 2, Figure 7a to Figure 7c is a view of the sunlight irradiated differently by the sun progress direction between sunrise and sunset According to the incident angle, the solar reflector applied to the solar power generation system of the present invention is a state diagram showing a process of controlling the solar light is reflected toward the condenser lens of the light collecting part while the horizontal rotation movement and the vertical rotation movement.

As shown in the drawings, the solar reflector applied to the solar power generation system includes a reflector 100 and a solar reflection guide unit 200.

Here, the reflector 100 is composed of a plurality of reflecting plate 110, the arrangement of the individual reflecting plate 110, the solar light is irradiated to the individual reflecting plate 110 when driving the solar power generation system after sunrise is reflected All the reflecting plates 110 are arranged in a horizontal and vertical arrangement so that they can be focused toward the condenser lens 310 of 300, and are inclined at a unique angle and fixed according to each of the positions.

In addition, each reflecting plate 110 arranged in a horizontal and vertical arrangement is arranged so that the adjacent reflecting plates alternate with each other to provide a drive in a state of minimizing the resistance of the wind.

In addition, the size of each reflector 110 has a size of about 1200 × 1200 (mm) in order to generate a large amount of power, the number is also preferably about 180, which is, depending on the amount of power generation degree of the size And it can be used by selectively applying the increase and decrease of the number.

In addition, the solar reflection induction part 200 is fixed to the reflection part 100, in accordance with the movement of the sun. The reflection part 100 is rotated horizontally and vertically by moving the plurality of reflection plates 110 which are inclined at the predetermined angle. ) Is a device for controlling each of the sunlight reflected through the () to always be reflected toward the condenser lens of the light collecting portion, the fixing frame 221 is fixed to each reflecting plate 110 constituting the reflecting part 100 and its fixing The end of the fixing member 230 is rotatably connected to the rear surface of the fixing member 220 formed of the fixing plate 222 in which the frame 221 is installed.

And the driving member 240 for vertical rotation to rotate the holding member 220 connected to the holding member 230 up and down is connected to the holding member 230 and the holding member 220.

That is, the vertical rotation movement driving member 240 is a screw 242 that horizontally adjusts the length of the vertical rotation movement driving motor 241 is rotatably installed on the holder 230, the screw 242 One end of the fixing member 220 has a fixed structure connected to the rear surface. At this time, between the fixing member 220 and the fixing table 230 is a state connected to the rotating shaft to be rotatable. Here, the fixing base 230 is rotatably connected to the fixing member 220 is installed by applying the number according to the scale of the reflecting portion (100).

The drive member 240 for vertical rotation moves the worm / worm gear to the rotating shaft which rotatably connects between the fixing member 220 and the fixed base 230 together with the above-mentioned configuration, and the worm / worm gear is spoken. It can be configured to drive a vertical rotational movement in the rotating shaft itself by configuring a drive motor, or includes a sliding member (not shown) for sliding the fixed member 220 up and down in the above-mentioned configuration In addition, the screw 242 is connected to the sliding movement member in a state where the vertical rotation movement driving motor 241 is fixed to the holder 230 and is installed. ) Can be used by applying a variety of driving means (gear of various gears and various driving motor) that can rotate the fixing member 220 is fixed to the reflector 100 up and down.

And the lower end of the fixing member 230, the moving member 250 is spoken to move along the guide rail 210 for tracking the solar light, wherein the moving member 250 is a rail wheel 252 to the moving body 251 Is provided.

In addition, a driving member 260 for horizontal rotational movement for driving the rail wheel 252 is installed in the moving body 251 constituting the moving member 250.

As such, when the sunrise to sunset by the solar reflection induction unit 200 connected to the reflector 100, the altitude is irradiated by varying the altitude depending on the predetermined direction of travel (from east to west in the direction of the arrow shown in Figure 7a) In consideration of the difference in the angle of incidence of sunlight, the solar power generation system of the present invention by rotating the reflecting member 100 consisting of a plurality of reflecting plates 110 horizontally from west to east and at the same time up and down at a speed corresponding to the traveling speed of the sun. The solar light that is irradiated to and reflected by the individual reflecting plates 110 during the driving of the solar reflector applied to the light is provided to be reflected into the condenser lens 310 of the condenser 300 at all times.

Here, depending on the season, the sun rises in the daytime average sunrise time of the summer is 05; 11, the sunset time is 19; 56, 14 hours 45 minutes is the daytime, the winter solstice sunrise time 07; 43, sunset Since the time is 17; 17, 9 hours 34 minutes is the day time, the difference between the normal day time is 5 hours 11 minutes on average as well as minute by day, but there is a difference, the drive member for vertical rotation movement 240 And the speed of the horizontal rotating movement driving member 260 is preferably set and driven per day.

At this time, since the daytime is provided by the Meteorological Agency until a few days afterwards, it is possible to smoothly use the solar reflector applied to the solar power generation system of the present invention in consideration of the daytime time without a hitch.

In addition to the speed setting of the above-described vertical rotational movement driving member 240 and the horizontal rotational movement driving member 260 is provided with a separate cab, although not shown in the drawings for various control such as driving of the solar power generation system of the present invention, In the equipped cab, various controls related to the solar power generation system of the present invention can be performed.

The light concentrator 300 is provided only on one side of the front to maximize the light condensing rate of the incident light reflected by the light concentrator 300 so that the light concentrator 300 can be interlocked with the reflector 100. The rotating body 500 is fixedly installed at the lower end, and the reference plate 400 is fixedly installed on the road surface, which is the center point of the solar tracking guide rail. Thereafter, the rotating body 500 is installed on the reference plate 400 so as to be rotatable, and by connecting and installing a connecting table 600 connecting the installed rotating body 500 and the one or more moving members 250 to each other. The installation is complete.

In addition, the light collecting part 300 is a reflector plate part made of a tube having a polygonal shape inside the body 320 so that when the reflected sunlight hits the inner wall, the reflected sunlight does not spread again. In order to maximize the endothermic efficiency when the solar light reflected by the 330 is reflected by the heat converter 700, the heat absorbing film 340 is formed on the outer wall of the heat converter 700.

At this time, the endothermic film 340 is formed when the common fluorine is used at a high temperature of 850 ℃ or more is often burned during use, so it is more stable than the black amorphous powder material that is more stable than when fluorine is coated at a high temperature of 850 ℃ It is preferable to use it as the heat absorption film 340.

Here, the fine powder material is produced by incomplete combustion or thermal decomposition of organic matter, so-called soot. The formation of such a soot layer is possible by burning pine (or oak, etc.) for a long time on the outer wall of the heat conversion part 700 to which the reflected sunlight is contacted again.

In addition, since the amount of insolation is worse than that of spring or summer in winter, sunlight reaching refractive rays through the body 320 constituting the light collecting part 300 reaches the outer wall of the heat conversion part 700. In order to shorten the body 320, two or more tubes of different diameters are superimposed so that the length can be adjusted in multiple stages, and the reflector plate 330 also includes two or more polygonal tubes having different widths, thereby providing the body seasonally. It can be used while adjusting the length accordingly.

7A to 7C are exemplary embodiments of the present invention, referring to FIG. 7A, since the sunlight emitted from the sun S10 after sunrise is irradiated from the east to the west at a low altitude, the reflector 100 is configured in advance. The reflection direction in which the front surface of each of the reflecting plates 110 is located is located in the direction from the west to the east. In addition, the total reflection angle of the reflecting part 100 is set to be substantially perpendicular (about 15 degrees off) from the ground.

The individual reflecting plates 110 having the reflection direction and the total reflection angle may also collect sunlight 310 of the light converging unit 300 to which the individual reflection angles when the solar system is operated after sunrise are also irradiated. It is tilted at a unique angle so that it can be reflected toward a fixed state.

In addition, since the Meteorological Agency previously recognized the daytime, which is the time between sunrise and sunset, the driving member for vertical rotational movement corresponding to the solar traveling speed in consideration of the operating time of the solar power system from sunrise to sunset and the corresponding daytime ( The solar power generation system of the present invention is driven in a state in which the driving speed of the driving member 240 and the horizontal rotating movement driving member 260 is set.

When driving the solar power generation system, the reflector 100 moves horizontally from the west to the east (clockwise) by driving the horizontal rotating movement driving member 260 so as to correspond to the traveling direction and the traveling speed of the sun. The total reflection angle of the reflector 100 is also divided by the vertical rotational movement driving member 240 toward the ground in a state substantially perpendicular to the ground, and moves in correspondence with the changing angles of incidence of sunlight moving from each other.

In addition, since the rotating body 500 installed integrally with the light collecting part 300 is fixedly connected through the fixing member 220 and the connecting table 600 fixedly connected to the reflecting part 100, the light collecting part 300 is in the west. Self-rotation is performed in the same manner as the reflector 100 moving horizontally in the east direction (clockwise direction) so that the reflected sunlight can be incident toward the condenser lens 310 at all times.

In addition, since the plurality of reflecting plates 110 constituting the reflecting unit 100 are disposed to be staggered between neighboring reflecting plates, the reflector 100 may be operated while minimizing wind resistance.

Referring to FIG. 7B, when the suns S20 moving from the east at noon are located in the middle of heaven, the sunlight irradiated from the sun S20 is irradiated vertically from top to bottom at the highest altitude.

At this time, the reflector 100 moves horizontally from east to west in accordance with the speed of the sun, and the movement distance at this time is located at the center of the solar tracking guide rail 210, and in conjunction with the reflector 100 The total reflection angle is also largely set toward the ground (approximately about 45 °), so that the sunlight emitted from the top to the bottom is always reflected toward the light collecting part 300.

Afterwards, the sun moves westward while lowering again at the highest altitude, and the reflector 100 also moves eastward from the center of the solar tracking guide rail 210 in response to the sun's moving speed. At the same time, the reflective part 100, which is largely divided toward the ground, also rotates perpendicularly to the ground again.

Referring to FIG. 7C, sunlight irradiated from the sun S30 before sunset is again irradiated from west to east at low altitude.

At this time, the reflector 100 is located in the east according to the speed of the sun, and in conjunction with this, the total reflection angle of the reflector 100 is also erected to be almost vertical (about 15 ° off) from the ground.

As described above, the solar reflector applied to the solar power generation system of the present invention has an installation area that is less than that of the conventional reflector since the entire reflecting part is within the reflecting range of sunlight irradiated as described with reference to FIGS. 7A to 7C. Not only has the advantage of being smaller, but also because the solar reflector of the present invention in accordance with the moving sun also has the advantage of maximizing the reflection efficiency.

In addition, the outer wall of the heat conversion part 700 which blocks the body 320 constituting the light collecting part 300 is an endothermic film which is a black amorphous micropowder material (aka soot) that is stable and does not burn even at a high temperature of 850 ° C. or longer. Since the 340 is formed, it provides a stable endothermic efficiency for a long time even when the reflected sunlight is transmitted.

In addition, the body 320 has a reflector plate 330 made of a tube having a polygonal shape inherent to provide the nuclear point of sunlight reflected from the body 320 to be reflected without spreading to reach the heat absorbing film 340 at a high temperature. To be available.

In addition, the body 320 and the reflector plate 330 can be adjusted in length in multiple stages in the case of the poor amount of solar radiation can be used to adjust the length of the body 320 to the shortest to increase the temperature of sunlight even in winter Provide means.

As described above, the present invention not only has an installation area smaller than ½ of the conventional solar reflector applied to the solar power generation system, but also maximizes the solar reflection efficiency.

In addition, when the high-temperature solar light collected through the light collecting unit is transferred to the heat conversion unit, there is also an effect of stably transmitting the inside of the heat conversion unit for a long time.

In addition, there is an effect that reflects the nucleus of the solar light does not spread when the nucleus of the sunlight incident into the light collecting portion hit the inner wall and reflected.

In addition, it is possible to adjust the length of the body of the light concentrator according to the intensity of the solar radiation, there is also an effect to increase the temperature of the solar light in the winter to pass to the heat converter.

Claims (6)

Reflector 100 provided with a plurality of reflecting plate 110 is inclined at a predetermined angle so that the solar light irradiated after sunrise is reflected toward the condenser lens 310 of the condenser 300, Each of the sunlight reflected through the plurality of reflecting plates 110 inclined at the predetermined angle by horizontally moving and vertically rotating the reflector 100 in accordance with the movement of the sun is fixed to the reflector 100 is fixed It is always made of a solar light reflection inducing unit 200 to control to be reflected toward the light collecting lens of the light collecting unit, The solar reflection guide unit 200, the solar tracking guide rails 210, a fixing member 220 for fixing the reflecting part 100, and one that is supported on the back of the fixing part 220 The above-described holder 230, the vertical rotation movement driving member 240 for vertically rotating the fixing part 220 connected to the holder 230, and the solar tracking to be installed on the lower end of the holder 230 Characterized in that it comprises a moving member 250 for causing the reflecting portion 100 to rotate left and right along the guide rail 210 for driving, and a horizontal rotating movement driving member 260 for driving the moving member 250. Solar reflector applied to solar power system. The method of claim 1, The plurality of reflecting plates 110 are arranged in a horizontal and vertical arrangement, the solar reflector is applied to the solar power system, characterized in that the staggered arrangement between the neighboring reflecting plates. delete The method of claim 1, The light concentrator 300 may be rotated at the same speed along the reflector 100 rotated from side to side, The reference plate 400, The rotating body 500 is installed on the reference plate 400, but installed to be rotatable, the condenser 300 is fixed to the upper surface, and The solar reflector is applied to a solar power system, characterized in that it comprises a connection (600) for connecting between the rotating body (500) and the at least one moving member (250). The method according to any one of claims 1, 2 or 4, The light collecting part 300, A condenser lens 310, Two or more tubes with different diameters are overlapped, and the length can be adjusted in multiple stages. The body 320 in which the condenser lens 310 is superposed on the inner circumference of the smaller diameter tube, and Of the two or more tubes constituting the body 320 to be superimposed on the inner circumference of the body 320 has a width smaller than the inner diameter of the smaller diameter tube, the two or more polygonal tube is different in width and the length is adjusted in multiple stages It is possible, and one side end of the polygonal tube of the narrow width of the two polygonal tube is fixed to the side of the condensing lens 310 and 330, Applied to the solar thermal power generation system, characterized in that the heat absorbing film 340 formed on the side wall of the heat conversion unit 700 to prevent the other side of the polygonal tube having a large width of the two or more polygonal tubes constituting the reflecting plate 330 Solar reflector. The method of claim 5, The heat absorbing film 340 is a solar reflector applied to a solar power generation system, characterized in that the black amorphous micropowder material produced by incomplete combustion or thermal decomposition of organic matter.

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