JP2014135365A - Sunbeam condensation power generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sunbeam condensation power generation device capable of efficiently condensing sunlight with excellence in cost.SOLUTION: A sunbeam condensation power generation device 1 includes a plurality of reflecting lines 2A-2D and one or more light-receiving line 3A. The plurality of reflecting lines 2A-2D are set in parallel in the south-north direction. On each reflecting line 2A-2D of each column, a plurality of reflecting mirrors 4 are installed to reflect the sunbeam. The plurality of reflecting mirrors 4 include heliostat mechanisms for tracking the motion of the sun to adjust the angles of reflection planes 6. The one or more light-receiving lines 3A is set at an upward fixed position orthogonally to the plurality of reflecting lines 2A-2D. One receiver 5 is installed on each light-receiving line 3A and has solar cells disposed thereon. The reflected light of the sunbeams from the plurality of reflecting mirrors 4 is condensed on the light-receiving planes of the solar cells.

Description

  The present invention relates to a solar light condensing power generation apparatus that reflects sunlight toward a receiver by a reflecting mirror and collects the sunlight.

In the past, energy has been obtained from fossil fuels such as petroleum. In recent years, however, these fossil fuels have been depleted, greenhouse gases such as carbon dioxide emitted from the use of these fossil fuels, and also for the purchase of fossil fuels. Cost (fuel cost) is a problem.
Therefore, sunlight that can be regenerated and does not require fuel costs has attracted attention as one of new energy sources.

  There are several types of solar heat collecting devices that use this sunlight as an energy source due to the difference in the sunlight condensing method (see Patent Document 1, etc.). Among these, for example, there are types of heat collecting devices called trough type, linear Fresnel type, and tower type. The heat energy collected by these is applied to the heat medium, and power is generated by turning the turbine through the heat medium.

Here, the trough-type heat collecting device reflects sunlight by using a bowl-shaped parabolic mirror, collects the reflected light on a receiver, and collects solar heat.
In addition, the linear Fresnel-type heat collector has a plurality of reflecting mirrors installed on a plurality of reflecting lines set in parallel in the north-south direction, and on a light receiving line set in the north-south direction above these reflecting mirrors. A receiver is installed, and sunlight is reflected by a reflecting mirror and condensed on the receiver to collect solar heat.
Further, the tower-type heat collecting device collects solar heat by collecting sunlight reflected by a plurality of reflecting mirrors arranged around the tower on a receiver provided on the tower.

In addition to the solar heat collecting apparatus as described above, there is one in which a solar cell is disposed as one that uses sunlight as an energy source. An example is shown in FIG.
As shown in FIG. 18, a solar battery panel in which a plurality of solar battery cells are connected is disposed on the ground. As the size of the panel, for example, a panel having a size of 2 m × 2 m can be mentioned. This panel generates electricity by direct sunlight.

  In addition, a tower-type condensing method is used, and a receiver in which a CPC (Compound Parabolic Concentrator) and a GaAs-based solar cell are arranged in the receiver can be used. FIG. 19 shows an example of the receiver of this apparatus. The CPC is used to further collect the reflected light collected on the receiver by the reflecting mirror and irradiate the light receiving surface of the solar cell with the collected light.

JP 2012-63086 A

  Examples of the power generation device using solar cells include the above, but in the case of the device shown in FIG. 18, it is necessary to dispose a large number of solar cell panels on the ground, and a large land area is required. It also costs land and costs too much. Furthermore, each solar cell of each panel itself requires a huge number and area, and also requires wiring to each panel, resulting in a complicated configuration. It does not concentrate and irradiate the solar cell, which is inefficient.

In the apparatus as shown in FIG. 19, the CPC itself is expensive, and the arrangement of the CPC or the like causes a problem in terms of cost. Further, by arranging the reflecting mirror and the CPC, the sunlight is finally condensed 400 to 700 times and irradiated on the light receiving surface of the solar cell. Since the temperature of the battery becomes too high, cooling is necessary.
In the tower type condensing method as described above, the aberration is large depending on the time zone (for example, the time zone other than 10 o'clock to 14 o'clock, such as 9 o'clock in the morning), image blurring / distortion occurs, and the receiver is efficient Since it is difficult to focus well and cannot be stably focused on the receiver during the day, the light intensity is high near the center (the center of the focused image) as shown in FIG. In this case, the light is collected in a divergent state with low intensity, and it is difficult to effectively use the energy of the light collected at low intensity places other than near the center, resulting in a substantial loss of power generation efficiency. End up.

  This invention is made | formed in view of the said problem, Comprising: It aims at providing the solar condensing power generation apparatus which is excellent in cost and can condense sunlight efficiently and can generate electric power. .

  In order to achieve the above object, the present invention provides a solar concentrating power generation apparatus having a plurality of reflection lines and one or more light receiving lines, wherein the plurality of reflection lines are arranged in parallel in the north-south direction. And a plurality of reflecting mirrors that reflect sunlight are installed on the reflection lines in each column, and the reflecting mirrors follow the movement of the sun to reflect the angle of the reflecting surface. The one or more light receiving lines are set at a fixed upper position perpendicular to the plurality of reflection lines, and one light receiving line is provided on each light receiving line. The receiver is provided with a solar cell, and the reflected light of sunlight from the plurality of reflecting mirrors is collected on the light receiving surface of the solar cell. A solar concentrating power generation device characterized by the above is provided.

  In this way, first, the sunlight is collected by the reflecting mirror and irradiated to the light receiving surface of the solar cell, so that the number and area of the solar cell and the land area are different from the conventional device as shown in FIG. It can be reduced, and the cost required for land cost and other device wiring can be reduced. Rather than arranging a large number of panels with solar cells, the number and area of the solar cells can be significantly reduced by arranging a plurality of reflecting mirrors and arranging the solar cells at the focused spot. Significant reduction can be achieved.

  In addition, since it is a cross linear solar concentrator that has the above-described heliostat mechanism and the reflection line and the light receiving line are in the above relationship, it is related to the condensing of sunlight at any time of day. Aberration can be reduced. Since blurring and distortion of the image formation can be suppressed, as shown in FIG. 16, there are a wide range of places where the intensity is high as compared with the conventional condensing method in which the intensity of light increases only near the center as described above. Thus, uniform light collection is possible. It does not have a divergent shape as in the conventional method, and the degree of light collection is high at locations other than near the center. Is possible.

  Moreover, since it can generate electric power using the solar cell arrange | positioned at the receiver, the turbine etc. which are required when generating electric power with the conventional solar heat collecting apparatus etc. become unnecessary. Since the turbine itself, the land area required for its installation, and the land cost can be eliminated, the present invention is further effective in these respects.

  At this time, the heliostat mechanism includes an east / west angle adjusting means capable of individually adjusting the reflection surfaces of the plurality of reflecting mirrors in the east / west direction and a north / south angle adjusting means capable of individually adjusting the angle in the north / south direction. It can be.

  The control structure for adjusting the angle of the reflecting surface of the reflector, adjusting the angle in the east-west direction and adjusting the angle in the north-south direction, having the east-west angle adjusting means and the north-south angle adjusting means as described above In this case, the control can be simplified by controlling the angle in the east-west direction and the north-south direction, and the accuracy can be greatly increased. That is, the angle of the reflecting surface can be adjusted easily, at low cost, and with high accuracy. Therefore, it is easy to reflect sunlight toward the receiver at an appropriate angle, and from this point, it is possible to improve the light collection rate and thereby improve the power generation efficiency.

  In addition, the angle of the reflecting surfaces of multiple reflecting mirrors can be adjusted individually in both the east-west direction and the north-south direction, so when reflecting sunlight more accurately toward the receiver, It is possible to adjust the slight angle accordingly. For this reason, it can condense with much higher precision.

  The scale of the equipment having the light collecting system as described above can be several units from several kW to several tens of kW, so the range of receivers and reflectors to be installed can be changed from small to large as necessary. Can choose. In this case, in the case of a small-scale device, the solar concentrating power generation device and the land area required for its installation can be reduced, so that the cost can be reduced, and the solar concentrating power generation device is installed. Can be installed even in countries where it is relatively difficult to prepare a vast land for the purpose.

  At this time, the east-west angle adjusting means includes a rotating ring and a fine adjusting means, and the rotating ring is connected to the plurality of reflecting mirrors via a frame, and the frame is rotated by rotation of the rotating ring. The angle of the reflecting surfaces of the plurality of reflecting mirrors on one reflecting line is adjusted at the same time, and the fine adjustment means is arranged for each of the plurality of reflecting mirrors. The angle of the reflecting surfaces of the plurality of reflecting mirrors simultaneously adjusted by the rotation of the rotating ring is additionally finely adjusted individually according to the position of each reflecting mirror by the fine adjusting means, The north-south angle adjusting means has an actuator, the actuator is arranged for each of the reflecting mirrors, each actuator has an arm, and the arm and the reflecting mirror are connected to each other. Angle of the reflecting surface of the reflector by forward and backward movement can be made to be adjusted individually.

  Conventionally, the reflective surface is adjusted to an arbitrary angle using only the T bone, which makes the control complicated. However, the rotating ring, the fine adjustment means, and the actuator as described above are used to adjust the reflective surface. The angle adjustment can be performed more easily and accurately.

  In addition, with regard to the angle adjustment in the east-west direction, a rotating ring for simultaneously adjusting the angle of the reflecting surface with respect to a plurality of reflecting mirrors and a fine adjustment means for performing additional fine adjustment individually are provided. If it is such, it can prevent that a fine adjustment means enlarges for an individual adjustment, and it is easy to adjust an angle more accurately.

  And a connecting member that supports and connects the plurality of reflecting mirrors on the reflection line of each row, and the connecting member has one end relatively above the other end in the north-south direction. The plurality of reflecting mirrors supported by the connecting member are arranged so as to be positioned at a position where the reflecting mirror installed on the one end side is the reflecting mirror installed on the other end side. It can be located relatively above the mirror.

By arranging the connecting member as described above, in the north-south direction, the reflecting mirror installed on the one end side is positioned relatively higher than the reflecting mirror installed on the other end side. Therefore, it is possible to prevent the reflected light of the sunlight reflected by the reflecting mirror on the one end side from being blocked by the reflecting mirror on the other end side and reaching the receiver (blocking prevention). Therefore, it is possible to generate power by collecting sunlight more efficiently.
Further, for example, the reflecting surface of the reflecting mirror can be arranged to be closer to the right angle with respect to sunlight as compared with a conventional device such as a trough type. That is, reflection efficiency can be increased and efficient light collection can be achieved.

  In addition, an imaging device that captures each of the plurality of reflecting mirrors to acquire a real image of each reflecting mirror, and each reflecting mirror when the reflecting surface is adjusted to an ideal angle to reflect sunlight to the receiver. An arithmetic processing device that obtains an ideal image by simulation from an actual sun position, an image processing device that compares an actual image of each reflector with an ideal image, and obtains an image shift, the imaging device, and the arithmetic processing And a central control device that controls the heliostat mechanism, and the heliostat mechanism is controlled by the central control device based on the image shift, and each of the reflecting mirrors is controlled by the central control device. The angle of the reflecting surface of each reflector is adjusted to the ideal angle, and the angle adjustment data of each reflector with respect to the calendar and the movement of the sun according to the true sun time is built-in. Based on the data, it can be made to adjust the angle of the reflecting surface of each reflecting mirror is adjusted to the ideal angle.

If this is the case, the conventional T-bone-equipped device required high-precision surveying and the like for the T-bone installation, but unlike that, the reflector can be installed simply and at low cost. In addition, the reflecting surface can be easily adjusted to an ideal angle at the start of light collection. It is also possible to confirm the actual state of the reflecting surface by the imaging device.
Further, since the adjustment is performed based on the built-in angle adjustment data as described above at the time of condensing, there is no need to sequentially calculate from the position of the sun as in the conventional method. Since sequential calculation is not required, the angle of the reflecting surface can be adjusted with high accuracy and low cost without delaying the movement of the sun.

  The receiver may include a cooling mechanism using a heat exchanger.

If it is such, it can prevent that the solar cell arrange | positioned at the receiver becomes too high in temperature by condensing, and can suppress that a solar cell deteriorates by high temperature.
Moreover, the heat energy obtained by the heat exchanger can be used as cogeneration energy.

  As described above, according to the present invention, it is possible to efficiently collect sunlight with high accuracy and to generate power with a solar cell at low cost.

It is the schematic which shows an example of the solar condensing power generation apparatus of this invention. It is the schematic which shows an example of a heliostat mechanism. It is the schematic which shows an example of the east-west angle adjustment means. (A) It is a top view of a rotation ring and a flame | frame. (B) It is a side view of a rotation ring and a flame | frame. (C) It is explanatory drawing which shows an example of a fine adjustment means. (D) It is explanatory drawing which shows another example of a fine adjustment means. (E) It is explanatory drawing which shows another example of a fine adjustment means. It is the schematic which shows an example of the north-south angle adjustment means. (A) It is an A arrow view in FIG. (B) It is a B arrow line view in FIG. It is explanatory drawing which shows an example of a connection member. It is explanatory drawing which shows the positional relationship of each reflecting mirror supported by the connection member. It is the schematic which shows another example of the solar condensing power generation apparatus of this invention. It is explanatory drawing which shows the schematic diagram of the real image of the reflective mirror by an imaging device. It is explanatory drawing which shows an example of the ideal image of the reflective mirror by an arithmetic processing unit. It is explanatory drawing which shows an example of the image shift calculated | required with an image processing apparatus. It is a flowchart which shows an example of the condensing method using a 2nd embodiment. It is the schematic which shows an example of a receiver. It is explanatory drawing which shows an example of the positional relationship of the sun, a receiver, and a reflective mirror regarding the principle of a cross linear type condensing system. It is explanatory drawing which shows another example of the positional relationship of the sun, a receiver, and a reflective mirror regarding the principle of a cross linear condensing method. It is explanatory drawing which shows another example of the positional relationship of the sun, a receiver, and a reflective mirror regarding the principle of a cross linear condensing method. It is a graph which shows intensity distribution of the condensed light in the condensing system of the present invention. It is a graph which shows intensity distribution of the condensed light in the conventional condensing system. It is the schematic which shows an example of the electric power generating apparatus using the conventional solar cell. It is the schematic which shows another example of the electric power generating apparatus using the conventional solar cell. It is explanatory drawing which shows an example of the conventional T-bone system heliostat mechanism. It is explanatory drawing which shows the position of the reflective mirror of the conventional apparatus.

Hereinafter, embodiments of the present invention will be described, but the present invention is not limited thereto.
<First embodiment>
FIG. 1 shows an example of a solar concentrating power generator according to the present invention.
First, the overall mechanism of the solar light collecting power generator 1 will be described. A plurality of reflection lines 2 and one or more light receiving lines 3 are set. A plurality of reflecting mirrors 4 are installed on each reflection line 2, and a receiver 5 is installed on the light receiving line 3. Sunlight is irradiated and reflected on the reflecting mirror 4, and the reflected light is collected on the receiver 5 to collect sunlight.
And the solar cell 41 is arrange | positioned at the receiver 5, Sunlight is condensed on the light-receiving surface, and electric power generation is performed.

  By arranging the solar cell at the point where sunlight is collected using the reflecting mirror in this way, it is possible to generate power more efficiently and easily than the conventional method of FIG. 18 at a significantly lower cost. it can. It is possible to achieve high-efficiency and low-cost power generation by installing a low-cost reflector and concentrating on the solar cell installed in the receiver, rather than installing many panels with many solar cells. It is.

  Further, unlike conventional solar thermal power generation, it has a solar cell, and does not require a large-scale device such as a turbine for power generation. For this reason, the cost can be further reduced. Land necessary for installation of turbines, etc. is also unnecessary.

Hereinafter, each part is explained in full detail.
The plurality of reflection lines 2 are set in parallel with each other along the north-south direction. Although FIG. 1 shows an example in which four reflection lines 2A to 2D are set, the number of the reflection lines 2 may be a plurality, and is not particularly limited.

Each of the one or more light receiving lines 3 is set at a fixed position above the reflection line 2. Furthermore, it is set so as to be orthogonal to the reflection line 2 (that is, along the east-west direction).
Although FIG. 1 shows an example in which one light receiving line 3A is set, the number of light receiving lines 3A can be two or more, and can be determined as appropriate. For example, the reflecting mirror 4 and the receiver 5 shown in FIG. 1 can be a single unit, and a plurality of such units can be prepared and arranged in parallel.
Further, the distance in the vertical direction between the light receiving line 3 and the reflecting line 2 is not particularly limited, and can be appropriately determined according to various conditions so as to easily collect sunlight, for example.

  As can be seen from the relationship between the reflection line and the light receiving line, the solar light collecting power generation apparatus 1 is of a cross linear type, and can efficiently collect sunlight at a low cost.

  Moreover, the conventional tower type can only be obtained at a high temperature of 500-1000 ° C, but the cross linear type of the present invention can be selected from a low temperature type of 200 ° C to a high temperature type of 700 ° C. Therefore, in any of the low concentration (low temperature type) to the high concentration (high temperature type), it is possible to suppress the deterioration of the solar cell 41 disposed in the receiver 5 and to operate in a wide concentration range. Can be widely applied. The best cost performance can be obtained by matching the conditions such as the installation location.

Next, the plurality of reflecting mirrors 4 will be described. The reflecting mirror 4 only needs to have a reflecting surface 6 capable of reflecting sunlight, and the shape of the reflecting mirror 4 is not particularly limited. For example, the sunlight reflecting surface 6 can be flat or concave. The size is not limited, and for example, the reflecting surface 6 can have an area of about 3 m × 1.5 m.
A plurality of reflecting mirrors 4 are installed on each row of the reflecting lines 2A to 2D. Although FIG. 1 shows an example in which six sheets are installed in each row, the number is not limited to this. For example, it can be determined according to the size of the installation location.

The reflecting mirror 4 is provided with a heliostat mechanism 7. Here, an example of the heliostat mechanism 7 is shown in FIG.
The heliostat mechanism 7 adjusts the angle of the reflecting surface 6 by following the movement of the sun. With respect to the reflecting surface 6 of the reflecting mirror 4, it has means for adjusting the angle in the east-west direction (east-west angle adjusting means 8) and means for adjusting the angle in the north-south direction (north-south angle adjusting means 9). Although here is an example for the case of the reflecting mirror 4A ₁ to 4A ₆ on reflection line 2A, it is provided with these means also in other reflective line 2B-2D.
Conventionally, the angle of the reflecting surface is adjusted to an arbitrary angle using only the T-bone as shown in FIG. 20, but the heliostat mechanism 7 according to the present invention adjusts the angle between the east-west angle and the north-south angle. Is different. These means can adjust the angle of each direction independently of each other. Therefore, the angle can be adjusted with high accuracy while the control is simple.

(About east-west angle adjustment means)
(Rotating ring)
First, the east / west angle adjusting means 8 will be described. FIG. 3 shows an example of the east / west angle adjusting means 8. 3A is a top view of the east-west angle adjusting means 8, and FIG. 3B is a side view thereof. Incidentally, one the installed reflector on a reflective line 2A of _{4 (4A} 1 _{~4A 6)} are also described together.

As shown in FIG. 3A, the east-west angle adjusting means 8 includes a rotating ring 10 and a frame 11 first.
Also, FIG. 2, as shown in FIG. 3 (A), the frame 11 is disposed so as to surround all of the reflecting mirror 4A ₁ to 4A ₆ arranged in series in the north-south direction, each of the reflecting mirrors 4A It is coupled with the east and west sides of ₁ to 4A _6. Here, the reflecting mirrors 4A _{1 to} 4A ₆ are connected at the center of the side surfaces thereof, and the reflecting mirrors 4A _{1 to} 4A ₆ are centered on an axis (dotted line in FIG. 3A) connecting the connecting parts. Can rotate in the north-south direction.

As shown in FIG. 3A, the rotating ring 10 is arranged at both ends and the center of the frame 11 so as to surround the frame 11 from the outside, for example, and is connected to the frame 11. That is, the rotating ring 10 and the reflecting mirrors 4A _{1 to} 4A ₆ are connected via the frame 11.
In addition, although the case where the number of the rotating rings 10 was three was mentioned here as an example, it is not limited to this, What is necessary is just one or more. For example, it may be arranged only at the center of the frame 11, but it is particularly preferable that there are a plurality of frames 11, and more can be arranged than in the case of FIG. 3.
The reflecting mirrors 4A _{1 to} 4A ₆ can be appropriately held and can be rotated at the same time, and the shape and size of the frame 11, the number and size of the rotating ring 10 can be appropriately determined. In consideration of the weight of the reflecting mirror and the like, the material and the like can be determined each time so that the frame 11 or the like is not bent.

Further, as shown in FIG. 3B, each rotary ring 10 is provided with a roller 12 for rotating the rotary ring 10 in the east-west direction. The means for rotating the rotating ring 10 is not particularly limited. However, with such a roller 12, the rotating ring 10 can be easily rotated, and the reflecting mirror 4 (4A ₁ ) connected via the frame 11 is used. to 4A ₆₎ it can be the to simultaneously rotate in the east-west direction.
Here, two rollers 12 are arranged for each rotating ring 10. The rotating ring 10 is rotatably supported by the roller 12 from below. The number and size of the rollers 12 are not particularly limited, and can be determined as appropriate.

A motor 13 is connected to the roller 12 in at least one of the rotating rings 10. The motor 13 can control the rotational drive of the roller 12 to rotate the roller 12 at a desired timing and number of rotations. Thereby, it is possible to accurately control the rotation of the rotating ring 10 with an accuracy of mR to several tens of mR.
The number of motors 13 to be arranged can be determined as appropriate.
Further, the degree of rotation (rotation range) is not particularly limited, but the reflecting mirror 4 can be rotated 90 ° per 12 hours so that the reflecting mirror 4 can reflect sunlight to the receiver 5 during the day. It is good to prepare the motor 13 and the roller 12 which are the same.

  Such an east / west angle adjusting means 8 is provided for each line of reflection lines. For this reason, it is possible to rotate all the reflecting mirrors installed on one reflection line simultaneously in the east-west direction, and to simultaneously adjust the angles in the east-west direction. Moreover, the angle of the reflecting mirror can be adjusted independently for each reflecting line.

(Fine adjustment means)
The east / west angle adjusting means further includes fine adjusting means. Here, the effectiveness of the fine adjustment means will be described in detail.
As described above, in the conventional condensing method, the aberration becomes large, and there is an inefficient surface for condensing sunlight. Therefore, first, the present inventor has found that by using a cross linear type condensing method, aberration can be reduced and sunlight can be efficiently condensed.

  In addition, a solar concentrating power generation device is generally expensive because it requires a large amount of land for installation. In order to minimize the land area required for such installation and reduce costs, it is necessary to further increase the light collection rate. Therefore, the present inventor conducted intensive research on a method for increasing the light collection rate in the cross linear type light collection method, and paid attention to angle adjustment of the reflecting mirror.

  First, the principle of the cross linear condensing method will be briefly described. FIG. 13 shows an example of the positional relationship between the sun, the receiver, and the reflector at the time of equinox. Sunlight is reflected toward the receiver by a single reflecting mirror located at the center O of the celestial sphere. On the projection surface, a path is projected on the celestial sphere where sunlight enters the reflecting mirror and the reflected light reflected by the reflecting mirror travels toward the receiver.

  In the cross linear type, a plurality of such reflecting mirrors are installed along the north-south direction. This is shown in FIG. FIG. 14 shows two reflecting mirrors. As shown in FIG. 14, since sunlight is incident on each reflecting mirror from the same direction in each celestial sphere, the path of light on the projection plane has the same pattern for any reflecting mirror. However, the angle of the reflecting surface of the reflecting mirror is considered to be smaller as the position is farther from the receiver.

However, strictly speaking, as shown in FIG. 15, the angle of the reflecting surface (the north-south direction and the east-west direction) for reflection to the receiver varies slightly depending on the position of the reflecting mirror. That is, in order to reflect sunlight to the receiver R, the reflecting mirror M ₁ is angle-adjusted so that the reflecting surface is perpendicular to the straight line M ₁ P that bisects the ∠SM ₁ R. On the other hand, in the reflecting mirror M ₂ , the angle of the reflecting surface is adjusted to be perpendicular to a straight line M ₂ P ′ that bisects ∠SM ₂ R, and is different from the angle of the reflecting surface of the reflecting mirror M ₁ .

Therefore, if you adjust the angle of multiple reflectors with different installation positions in the same direction, even if one reflector can reflect sunlight toward the receiver at the optimum angle, it is optimal for another reflector. The light is reflected at an angle slightly deviated from the angle.
Therefore, the present inventor has found that if the angle adjustment of the reflection surfaces in the east-west direction and the north-south direction can be individually adjusted, light can be collected with higher accuracy.

  The fine adjustment means is provided in each of the plurality of reflecting mirrors 4 that are simultaneously adjusted by the rotating ring 10 or the like as described above. Then, according to the position of each reflecting mirror, the angle in the east-west direction of the reflecting surface is additionally finely adjusted. The configuration of the fine adjustment means is not particularly limited as long as the angle of the reflection surface of the reflecting mirror 4 can be finely adjusted.

An example of the fine adjustment means 18 is shown in FIG.
Here, as shown in FIG. 3C, it is assumed that the rotating member 19, the rotating actuator 20, and the rotating shaft 21 are included.
A turning member 19 having a curved surface is connected to the frame 11 and is provided with a turning actuator 20. The rotating member 19 is provided with a long groove along the curved surface. One end of the pivot shaft 21 is fitted in the long groove, and the one end of the pivot shaft 21 is movable along the long groove. The other end of the pivot shaft 21 is connected to the frame 11. However, the present invention is not limited to this, and another rotation member can be provided on the other end side in the same manner, and the other end can be fitted into the long groove.

  Further, the pivot shaft 21 is connected to the reflecting mirror 4 along the dotted line in FIG. 3A, and the reflecting mirror 4 has the pivot shaft 21 as the central axis as described above. It can rotate in the north-south direction. Thus, the reflecting mirror 4 is connected to the frame 11 via the pivot shaft 21 and the pivot member 19.

Further, the tip of a turning arm 22 of the turning actuator 20 is attached to the turning shaft 21. By the forward and backward movement of the actuator 20, the pivot shaft 21 can be moved along the long groove. Thereby, the pivot shaft 21 can be rotated in the east-west direction together with the reflecting mirrors 4 connected thereto.
In addition, the range (stroke range) of the forward / backward movement of the turning arm 22 is not particularly limited. However, as described above, the angle of the plurality of reflecting mirrors 4 can be roughly adjusted simultaneously using the rotating ring 10 or the like, so that a slight difference in angle caused by the difference in position of each reflecting mirror can be additionally adjusted. What is necessary is just to be able to move the pivot shaft 21 to the extent. For example, the angle of the reflecting surface can be adjusted in the range of about 3 ° in the east-west direction.

In the present invention, the east / west angle adjusting means 8 further includes a fine adjusting means 18 as shown in FIG. 3C. Therefore, after roughly adjusting the angle of a plurality of reflectors with a rotating ring, the fine adjusting means is further adjusted. 18, the angle can be additionally finely adjusted for each reflecting mirror. That is, the angle of the reflection surface in the east-west direction can be adjusted with higher accuracy and more simply than when the fine adjustment means 18 is not provided. Thereby, it can condense more efficiently.
Note that the fine adjustment means is not limited to the form shown in FIG. 3C, and other forms may be employed. For example, as shown in FIG. 3D, rails that can be moved up and down by an actuator or the like are arranged on both sides of the reflecting mirrors, and the pivot shafts of the reflecting mirrors connected to the rails by the vertical movement of each rail. The angle in the east-west direction of the reflector may be finely adjusted by moving the bar up and down.
Further, as shown in FIG. 3E, a mechanism is provided for vertically moving one end of the pivot shaft of the reflecting mirror, the one end is vertically moved, and the reflecting mirror is rotated with the other end as a fulcrum. It is also possible to make fine adjustments. The other end can be connected to the frame in an appropriate manner so that it can serve as a fulcrum.

  Of course, the east-west angle adjusting means 8 is not limited to the form shown in FIG. 3 (rotating ring and fine adjusting means), and one means is used to individually adjust the east-west angle of the reflecting surface of each reflecting mirror 4. It can also be possible. However, if it is attempted to finely adjust the angle of each reflector in the east-west direction with only one means, the means tends to be large-scale or control is complicated. By combining the rotary ring 10 (rough angle adjustment) and the fine adjustment means 18 (fine angle adjustment) as described above, it is possible to prevent unnecessary complexity and scale. Moreover, it is easy to adjust the angle with high accuracy.

(About north-south angle adjustment means)
Next, the north-south angle adjusting means 9 will be described. FIG. 4 shows an example of the north-south angle adjusting means 9. FIG. 4A is a view taken in the direction of the arrow A in FIG. 2, and also illustrates the rotating ring 10, the frame 11, and the reflecting mirror 4 so that the positional relationship of each can be easily grasped. FIG. 4B is a view taken in the direction of arrow B in FIG. 2 and also shows the frame 11 and the reflecting mirror 4 together.
The north-south angle adjusting means 9 is individually provided for the reflecting mirror 4 and includes an actuator 15 having an arm 14. The actuator 15 moves the arm 14 forward and backward. The arm 14 is connected to the reflecting mirror 4.

  Here, the tip of the arm 14 is connected to the back surface of the reflecting mirror 4, and the back surface of the reflecting mirror 4 can be pushed and pulled by its forward / backward movement, whereby an axis connecting the connecting portions with the frame 11. The reflecting mirror 4 can be rotated in the north-south direction around the center. The angle of the reflecting surface 6 of the reflecting mirror 4 in the north-south direction can be adjusted by the distance of the arm 14 moving forward and backward.

  The forward / backward range (stroke range) of the arm 14 is not particularly limited as long as it can appropriately reflect sunlight toward the receiver throughout the year. Due to the inclination of the earth's axis, the altitude of the sun changes in a range of (23.4 ° × 2) throughout the year, so that the stroke range of the arm 14 is adjusted so that the angle of the reflecting surface 6 can be adjusted at least by that range. It is good to decide.

Further, the arm 14 rotates the reflecting mirror 4 by pushing or pulling the back surface of the reflecting mirror 4 as described above, and simultaneously supports the reflecting mirror 4 from the back surface side.
In the conventionally used T-bone method, the reflecting mirror is arbitrarily rotated in accordance with the movement of the sun by rotating each part as shown in FIG. In such a T-bone system, the reflecting mirror may be shaken by the wind, and the reflection to the receiver may be adversely affected. However, thanks to the support by the arm 14 in FIG. Can be effectively prevented from shaking. Therefore, it is possible to prevent the reflection to the receiver from being appropriately performed due to the shaking of the reflecting mirror 4, and it is possible to prevent the light collection rate from being lowered.

In addition, although the case where it connected with the arm 14 on the back surface of the reflective mirror 4 was demonstrated, naturally it is not limited to this, The connection part of the arm 14 and the reflective mirror 4 can be determined suitably. For example, it can be connected to the arm 14 on the side surface of the reflecting mirror 4.
Further, the reflecting mirror 4 and the arm 14 are not necessarily connected. Any mechanism that can be rotated while appropriately supporting the reflecting mirror may be used.

  Since the reflecting mirror 4 rotates in the east-west direction together with the frame 11 as described above, the actuator 15 itself may be fixed to the frame 11, for example. In this way, even if the frame 11 and the reflecting mirror 4 are rotated in the east-west direction by the rotating ring 10 in order to adjust the angle of the reflecting surface 6 in the east-west direction, the actuator 15 is fixed to the frame 11, so The angle of the reflecting surface 6 in the north-south direction can be adjusted by the arm 14 of the actuator 15 in the same manner as before rotating in the direction.

  Such a north-south angle adjusting means 9 is provided for each reflecting mirror. For this reason, the reflecting mirror 4 can be individually rotated in the north-south direction, and the angle of the reflecting surface 6 in the north-south direction can be adjusted. Moreover, the angle can be adjusted independently for each reflecting mirror.

The mechanism for adjusting the angle of the reflecting surface 6 by rotating the reflecting mirror 4 has been described above for the east-west angle adjusting means 8 and the north-south angle adjusting means 9.
In the conventional T-bone system as shown in FIG. 20, the reflecting surface must be rotated in various directions using only the T-bone and adjusted to an arbitrary angle, which makes control complicated.
However, in the present invention, the angle adjustment of the reflecting surface is shared by the east-west angle adjusting means having a rotating ring and fine adjusting means and the north-south angle adjusting means having an actuator. That is, the east-west angle adjustment means only needs to adjust the angle in the east-west direction, and the north-south angle adjustment means only needs to adjust the angle in the north-south direction. The angle of the reflecting surface can be adjusted with high accuracy to an arbitrary angle by combining them. Moreover, since each mechanism is simple, the cost is low.

It should be noted that not only the reflecting surface 6 can be adjusted to an arbitrary angle, but also the heliostat mechanism 7 must be adjusted so that the angle actually follows the movement of the sun.
In order to facilitate such angle adjustment, for example, the angle adjustment data of the reflecting mirror 4 with respect to the movement of the sun according to the calendar and true sun time is built in the east / west angle adjustment means 8 and the north-south angle adjustment means 9. good. As described above, in the east-west angle adjusting means 8, the roller 12 is rotationally controlled by the motor 13 to control the rotation of the rotating ring 10, and the rotating actuator of the fine adjusting means 18 is controlled to reflect the reflecting mirror. The angle adjustment of the 4 reflective surfaces 6 in the east-west direction is performed. The movement of the sun can be estimated in advance from the calendar and true sun.

Therefore, the motor 13 is provided with a computer for driving and controlling the motor 13 so that the angle of the reflecting surface 6 of the reflecting mirror 4 is appropriately adjusted following the movement of the sun. The rotation degree of the rotating ring 10 and the control value (angle adjustment data) pattern of the motor 13 are input. Similarly, the control pattern is input to the memory of the turning actuator 20 or the computer provided for the control of the forward and backward movement of the turning arm 22. When the sunlight is actually reflected by the receiver 5, the motor 13 is driven based on the angle adjustment data in the computer to control the rotation of the rotating ring 10, and the rotation arm of the rotation actuator 20. By controlling the forward and backward movement of 22, it is possible to easily adjust the angle of the reflecting surface 6.
In particular, in the east-west angle adjusting means 8, the sun moving from east to west may be rotated at a constant speed by a rotating ring and additionally finely adjusted by a fine adjusting means, and extremely stable control is possible. . In the conventional T-bone method, the reflecting mirror may rotate greatly in order to correspond to the position of the sun, and it may be necessary to rapidly increase the rotation speed. In the present invention, such a rapid rotation is required. The need can be reduced.
Instead of preparing a computer separately, for example, angle adjustment data can be input and controlled in a memory and a control circuit built in the motor 13.

  The same applies to the north-south angle adjusting means 9. That is, the arm 14 of the actuator 15 for adjusting the angle of the reflecting surface 6 of the reflecting mirror 4 appropriately following the movement of the sun in the memory of the actuator 15 or in the computer provided. The pattern of the control value (angle adjustment data) of forward / backward movement is input in advance. Then, by controlling the forward / backward movement of the arm 14 of the actuator 15 based on the angle adjustment data, the angle of the reflecting surface 6 can be easily adjusted.

  Of course, as in the prior art, the position of the sun may be calculated sequentially, and the angle of the reflecting surface corresponding to the position of the sun may be calculated to control the east-west angle adjusting means 8 and the north-south angle adjusting means 9. However, if the built-in data patterned as described above is used, the conventional sequential calculation is not necessary, and the angle of the reflecting surface is not adjusted after performing such a sequential calculation. Therefore, it is possible to quickly cope with the movement of the sun without delay, and it is simple and highly accurate, leading to an increase in the light collection rate. It can be determined appropriately according to the cost and the like.

Further, the east-west angle adjusting means 8 and the north-south angle adjusting means 9 can be controlled independently. However, the present invention is not limited to this, and a central controller 16 is provided as shown in FIG. 8 is connected to the motor 13, the turning actuator 20, and the actuator 15 of the north-south angle adjusting means 9, and the central control device 16 rotates the rotating ring 10, the forward / backward movement of the turning arm 22 of the turning actuator 20, and It is also possible to control the forward and backward movement of the arm 14 of the actuator 15 in a unified manner. For example, the central control device 16 can control the initial angle of the reflecting surface 6 at the start of light collection or maintenance. Based on the position of the sun, the control data of the motor 13 and the like for adjusting the angle of the reflective surface 6 and the angle to an appropriate angle is calculated, and the initial angle of the reflective surface 6 is calculated by the central controller 16 based on the calculation result. Can be adjusted.
Then, after adjusting the initial angle, the central control device 16 may continue to adjust the angle, or the angle adjustment may be performed using the built-in data as described above.

Moreover, in this invention, it has the connection member which supports and connects the several reflective mirror 4 on the reflective line of each row | line. An example of the connecting member is shown in FIG. FIG. 6 shows the positional relationship between the reflecting mirrors supported by the connecting member. 5 and 6, the description of the actuator and the rotating ring of the heliostat mechanism is omitted. Here, first, the case where the solar concentrating power generation apparatus 1 is installed in the northern hemisphere will be described.
The connecting member 17 is not particularly limited, and supports and connects a plurality of reflecting mirrors 4 (reflecting mirrors 4A _{1 to} 4A ₆ on the reflecting line 2A in FIG. 5) on the reflecting lines 2 in each row. If it is good. And what is necessary is just to be able to arrange | position the connection member 17 so that it may incline so that one end (north end) may be located relatively higher than the other end (south end) (refer FIG. 6). Although it does not specifically limit as an angle of inclination, For example, it can be set as about 15-20 degrees. Since the plurality of reflecting mirrors 4 supported by the connecting member 17 are arranged so as to be inclined as described above, the reflecting mirrors installed on one end side (north side) positioned relatively upward are relatively In other words, it is positioned relatively higher than the reflecting mirror installed on the other end side (south side).

  Here, the frame 11 of the heliostat mechanism 7 is also used as the connecting member 17. However, the present invention is not limited to this, and a member for connecting a plurality of reflecting mirrors 4 in addition to the frame 11 is separately prepared. Of course, it is also possible to provide a member as a connecting member. The plurality of reflecting mirrors 4 can be connected directly or indirectly, and the height position of the plurality of reflecting mirrors can be adjusted simultaneously by tilting the connecting member.

Here, the connecting member 17 may be disposed with the inclination angle in the north-south direction fixed at a constant value, but it can be freely rotated in the north-south direction. It can also be adjusted as appropriate. Members and means for adjusting the angle can be provided as necessary.
In order to reflect sunlight efficiently to the receiver, it is necessary to consider the altitude of the sun. This altitude changes depending on the calendar and the latitude of the place where the device is installed, as well as during the day. . Therefore, in addition to adjusting the angle of the reflecting surface 6 with the heliostat mechanism 7 in response to changes in the daytime, the inclination of the connecting member 17 in the north-south direction as described above is also easy to cope with changes in the calendar and latitude. The angle should be adjustable. Further, the inclination angle of the connecting member 17 may be adjusted when the altitude of the sun is low, such as in the morning. Conventionally, for example, regarding the calendar, the installation state of the reflecting mirror is adjusted in accordance with the altitude of the sun at the time of spring equinox. However, if the angle in the north-south direction can be adjusted, it can be more appropriately adapted to the movement of the sun throughout the year, and light can be collected more efficiently.

Here, the reason why the connecting member 17 is provided and tilted will be described in detail.
As shown in FIG. 6, in the plurality of reflecting mirrors 4, the reflecting mirror installed on the north side is positioned relatively higher than the reflecting mirror installed on the south side, thereby preventing blocking. easy. Therefore, sunlight can be collected efficiently.
In addition, the reflecting mirrors 4 can be arranged at regular intervals, for example. This makes it easy to install a plurality of reflecting mirrors. Moreover, the connection member 17 which connects these reflective mirrors 4 should just provide a connection part with the reflective mirror 4 at equal intervals, and the manufacture is simple.
Furthermore, blocking can be prevented even with such an equidistant arrangement.

  On the other hand, in the case of a conventional apparatus that does not include a connecting member as in the present invention and a plurality of reflecting mirrors are installed at the same height (see FIG. 21), in order to prevent blocking, the north side It is necessary to increase the distance between the reflecting mirrors as it goes to the side. In such a positional relationship, it takes time to install the reflecting mirror. In addition, the installation range of the reflecting mirrors is expanded and the entire apparatus is enlarged, the number of reflecting mirrors per unit area is reduced, and the light collection rate is not good. The present invention can also solve such problems.

In addition, compared to conventional devices such as trough type, for example, the reflecting surface of the reflecting mirror can be easily arranged so as to be closer to the right angle to sunlight, the reflection efficiency can be increased, and efficient light collection is possible. is there. In other words, trough-shaped parabolic mirrors do not adjust the north-south angle of the entire mirror, so that when the sun's altitude is low, the sunlight becomes a parabolic mirror at a low angle. Incident light and the light collection rate are deteriorated.
However, in the case of the present invention, the connecting member 17 is inclined, so that sunlight can be reflected at a high angle so as to be closer to a right angle, thereby improving the light collection rate. it can.
Note that if the parabolic mirror is inclined and disposed in the trough type, it is necessary to tilt the receiver accordingly, which is more time-consuming than the present invention.

The connecting member 17 is also connected to the central control device 16 as shown in FIG. 6, or various data are incorporated in a motor or the like that rotates the connecting member 17 up and down. The inclination angle can be adjusted as appropriate.
In addition, when installing a solar concentrating power generation apparatus in the southern hemisphere, contrary to the aspect of FIG. 6, the connecting member can be disposed so as to be inclined so that the south end of the connecting member is positioned relatively higher than the north end.

(About the receiver)
Next, the receiver 5 will be described. FIG. 12 shows an example of the receiver.
One receiver 5 is provided on each light receiving line, and mainly includes a receiver main body 42, a solar cell 41, and a cooling mechanism 43.
First, the receiver main body 42 itself is not particularly limited, and its shape and size can be determined as appropriate. For example, a conventional cross linear type can be used. What is necessary is just to have an appropriate opening part and can concentrate the reflected light of sunlight efficiently.

Moreover, the kind of solar cell 41 is not specifically limited, It can determine suitably. Any light source can be used as long as reflected light of sunlight is collected on the light receiving surface 44 and can appropriately generate power. For example, a GaAs type material can be used. In addition, a silicon-based solar cell is relatively inexpensive and can reduce costs.
As described above, sunlight is condensed about 700 times in the apparatus as shown in FIG. On the other hand, in the present invention, sunlight can be condensed about 200 times. However, in order to obtain the same energy as in FIG. 19, for example, three or more light receiving lines are set and condensed on three or more receivers. Will do. At this time, the number of reflecting mirrors to be installed is also required to be three times or more. In such a case, it is preferable to use a relatively inexpensive silicon solar cell in order to prevent the cost from increasing.

  In addition, a cooling mechanism 43 is provided to prevent the solar cell 41 from deteriorating due to an unnecessarily high temperature. The cooling mechanism 43 is not particularly limited as long as it can cool the solar cell 41 and the receiver main body 42, but can use the heat exchanger 45. Any heat medium (such as air or carbon dioxide) that can efficiently exchange heat by passing through the heat exchanger 45 may be used.

  In addition, the thermal energy obtained with the heat exchanger 45 can also be utilized as cogeneration energy. For example, it can be used for air conditioning, botanical gardens, factories, and the like. Depending on the amount of thermal energy, it can also be used for power generation.

<Second embodiment>
FIG. 7 shows another example of the solar concentrating power generation device of the present invention.
As a whole, the solar concentrating power generation device 101 includes an imaging device 31, an arithmetic processing device 32, an image processing device 33, and a central control device 36 in addition to a plurality of reflecting mirrors 4 and receivers 5 each having a heliostat mechanism 7. Have.
The angle of the reflecting surface 6 of the reflecting mirror 4 can be adjusted by the heliostat mechanism 7, the imaging device 31, the arithmetic processing device 32, and the image processing device 33 under the control of the central control device 36. Moreover, the reflective surface 6 is adjusted to the ideal angle for reflecting sunlight to the receiver 5 from the position of an actual sun by these apparatuses. After the adjustment to the ideal angle, the angle is adjusted based on the calendar and the angle adjustment data of the reflecting mirror 4 with respect to the movement of the sun according to the time of true sun, so that sunlight is condensed on the receiver 5.

In the sunlight concentrating power generation device 101 of FIG. 7, the reflector, the receiver, the east-west angle adjusting means, the north-south angle adjusting means, and the like can be the same as those of the solar light collecting power generator 1 shown in FIG.
Here, a different point from the solar condensing power generation device 1 of FIG. 1 is explained in full detail.

First, the imaging device 31 will be described.
As shown in FIG. 7, the imaging device 31 is not particularly limited as long as it can capture a plurality of reflecting mirrors 4 and can acquire an actual image of each reflecting mirror 4. For example, a CCD camera 34 or the like can be used. A CCD camera has sufficient image quality. As long as the reflecting mirror 4 can be discriminated and an actual image that can be compared with the ideal image can be acquired by the image processing device 33 as will be described later, the reflecting mirror 4 can be appropriately determined according to the cost.
Further, the arrangement position and the number of the imaging devices 31 are not particularly limited, and can be determined each time according to the scale of the solar light collecting power generation device 101, the number of the reflecting mirrors 4 and the like.

Here, the schematic diagram of the real image of the reflecting mirror 4 by the imaging device 31 is shown in FIG. Reflecting mirror 4 is shown on the right side of the circular imaging range. The magnification and the like are set so that appropriate comparison with an ideal image described later can be performed.
Here, the setting is such that a part of the reflecting mirror 4 is photographed, but naturally it is not limited to this, and it is possible to set so that the entire reflecting mirror 4 is photographed. It can be appropriately determined according to various conditions so that the comparison can be made efficiently.

Next, the arithmetic processing unit 32 will be described.
As described above, the imaging device 31 acquires a real image of the reflecting mirror 4, while the arithmetic processing device 32 acquires an ideal image of the reflecting mirror 4. The ideal image of the reflecting mirror 4 is obtained when the reflecting surface 6 is adjusted to an ideal angle in order to reflect the sunlight to the receiver 5 and can be obtained by simulation from the actual position of the sun. Any program may be used as long as a program for appropriately acquiring the ideal image as viewed from the position where the imaging device 31 is arranged, and the program itself is not particularly limited.

  FIG. 9 is an example of an ideal image of the reflecting mirror 4 by the arithmetic processing device 32. Here, the state where the reflecting mirror is located closer to the center within the circular range is ideal.

The image processing device 33 will be described.
The image processing device 33 is connected to the imaging device 31 and the arithmetic processing device 32, and an actual image of the reflecting mirror 4 acquired by the imaging device 31 and an ideal image of the reflecting mirror 4 acquired by the arithmetic processing device 32 are obtained. Will be sent. Then, the two images transmitted are compared, for example, by superimposing them, and the difference between the two images is obtained.
The image processing device 33 is not particularly limited as long as a program that can appropriately determine such an image shift is input.

  FIG. 10 is an example of an image shift obtained by the image processing device 33. Here, the actual image of the imaging device 31 and the ideal image of the arithmetic processing device 32 are overlaid and compared. It can be seen that the position of the reflecting mirror is shifted to the right in the actual image with respect to the ideal image.

Next, the central controller 36 will be described.
The central control device 36 is connected to the heliostat mechanism 7, the imaging device 31, the arithmetic processing device 32, and the image processing device 33, and can control each device in a unified manner.
The central control device 36 sends commands to the imaging device 31, the arithmetic processing device 32, and the image processing device 33 at a desired timing, and acquires the real image of the reflecting mirror 4, the acquisition of the ideal image, the real image and the ideal image. Comparison and acquisition of image deviation.

  Further, the central control unit 36 adjusts the east-west angle of the heliostat mechanism 7 for adjusting the actual angle of the reflecting surface 6 of the reflecting mirror 4 to the ideal angle based on the image shift obtained by the image processing device 33. A program for calculating a control value of each part (motor 13, turning actuator 20, actuator 15) such as means 8 is input. Then, the control value calculated by the program is transmitted to the heliostat mechanism 7 by the central controller 36, and the heliostat mechanism 7 is controlled based on the control value, and the angle of the reflecting surface 6 of the reflecting mirror 4 is controlled. Is adjusted to the ideal angle.

  For example, the heliostat mechanism 7 is controlled so that the reflection surface 6 of the reflecting mirror 4 is adjusted to the ideal angle so as to coincide with the ideal image of FIG.

  As described above, the east-west angle adjusting means 8 and the north-south angle adjusting means 9 of the heliostat mechanism 7 can be independently controlled. Further, as described above, based on the command of the central controller 36, the reflecting mirror 4 The angle of the reflecting surface 6 can also be adjusted.

As described above, if the imaging device 31 is provided, the angle of the reflecting surface 6 of the reflecting mirror 4 can be easily adjusted to an ideal angle corresponding to the position of the sun. In addition, the angle can be adjusted at low cost, the time required for the adjustment can be shortened, and the actual state of the reflecting surface 6 can be confirmed by the imaging device 31.
Furthermore, when the solar concentrating power generation apparatus 101 is constructed, the angle of the reflecting surface 6 can be appropriately adjusted later by using the imaging device 31 or the like. Cost can be reduced.

  The devices and mechanisms described above can be connected to each other by wire to control communication, but can also be wirelessly controlled by providing a transmitter and a receiver. If the control is performed wirelessly, the cost can be reduced as compared with the case of wired communication, and it is possible to quickly and easily cope with the increase in the size of the solar light collecting power generation apparatus 101.

Here, the method of condensing sunlight using the solar concentrating power generation apparatus 101 of the present invention of FIG. 7 which is the second embodiment will be described. FIG. 11 shows an example of the process, which is roughly divided into an alignment process and a condensing process.
First, by performing an alignment process, the angle of the reflecting surface 6 of the reflecting mirror 4 is adjusted to an ideal angle with respect to the position of the sun at the start of the condensing process, and then the condensing process is performed to collect sunlight. Do.

Hereinafter, each process is explained in full detail.
(Alignment process)
The angles of the reflecting surfaces 6 of the plurality of reflecting mirrors 4 are aligned (adjusted) to an ideal angle.
More specifically, first, a command is sent from the central controller 36 to the imaging device 31, the arithmetic processing device 32, and the image processing device 33.
That is, each reflecting mirror 4 is photographed by the imaging device 31 such as the CCD camera 34. Thereby, each real image is acquired (see FIG. 8).
On the other hand, the ideal image of each reflecting mirror 4 is acquired by the arithmetic processing unit 32 (see FIG. 9).
Then, the real image is sent from the imaging device 31 and the ideal image is sent from the arithmetic processing device 32 to the image processing device 33, and the real image and the ideal image are compared by the image processing device 33. Thereby, an image shift is acquired (see FIG. 10).

Next, the image processing device 33 sends data regarding image shift to the central control device 36. Then, the control value of the heliostat mechanism 7 is calculated by the central controller 36 based on the image shift data so that the actual angle of the reflecting surface 6 is adjusted to the ideal angle for each reflecting mirror 4. . That is, appropriate control values for the motor 13 of the east-west angle adjusting means 8, the actuator 20 for rotation, and the actuator 15 of the north-south angle adjusting means 9 are calculated.
Based on the control value, the motor 13, the turning actuator 20, and the actuator 15 are controlled, and the rotating ring 10 is rotated, and the turning arm 22 and the arm 14 are moved forward or backward, whereby each reflecting mirror 4 is moved. The reflecting surface 6 is adjusted to an ideal angle.
With such a method, the angle of the reflecting surface 6 of the reflecting mirror 4 can be easily and immediately adjusted to the ideal angle.

(Condensing process)
After performing the alignment process as described above and adjusting the reflection surface 6 of each reflecting mirror 4 to an ideal angle, sunlight is actually reflected by the reflecting mirror 4 to the receiver 5 to collect sunlight.
Although the angle of the reflecting surface 6 is adjusted to an ideal angle corresponding to the position of the sun such as at the start of the condensing process, it is necessary to adjust the angle of the reflecting surface 6 so as to follow the movement of the sun.

Therefore, in the present invention, the collection of sunlight is performed while controlling the heliostat mechanism 7 and adjusting the angle of the reflecting surface 6 based on the angle adjustment data of each reflecting mirror 4 with respect to the movement of the sun according to the calendar and true sun. Do light. For example, angle adjustment data built in the heliostat mechanism 7 can be used.
In this way, since it is not necessary to sequentially calculate the angle of the reflecting surface with respect to the position of the sun as in the prior art, it is simple and can respond quickly to the movement of the sun. In addition to being able to adjust with high accuracy, control costs can be reduced.

The alignment process can be performed when the solar concentrating power generation apparatus 101 is constructed, particularly when the reflecting mirror 4 and the receiver 5 are installed. In the present invention, it is not necessary to set the reflecting mirror 4 or the like so precisely, and it can be performed relatively easily as compared with the conventional case. For this reason, the effort and cost accompanying construction work can be reduced.
And after adjusting to an ideal angle once by an alignment process, since it is only necessary to perform a condensing process based on angle adjustment data, it is still simpler.

  Further, not only when the solar concentrating power generation apparatus 101 is constructed, for example, the alignment process can be performed periodically. In the condensing process, the angle of the reflecting surface 6 is not adjusted from the actual position of the sun, but adjustment is performed based on the angle adjustment data. It is advisable to periodically check and adjust whether the angle 6 is appropriate. By carrying out such regular inspection, if the reflection surface 6 is at an inappropriate angle due to a malfunction or the like in the apparatus, it can be adjusted again to an appropriate angle, and the light collection rate is reduced. Can be prevented. As a result, stable operation can be achieved.

EXAMPLES Hereinafter, although an Example and a comparative example are shown and this invention is demonstrated more concretely, this invention is not limited to these.
(Example)
The simulation which condenses sunlight on a solar cell using the cross linear type solar condensing power generation device of the present invention as shown in FIG. 1 was performed. The simulation conditions were set as follows.
Set up a single light receiving line and install a receiver (height 20m above the ground), 80 reflective lines (distance between lines is 1.5m), 30 reflectors per line (size (1.5 m × 1.5 m) was installed (the area of the total reflection mirror was 5400 m ² ).
All reflectors were placed on the north side of the receiver. The horizontal distance between the tip of the first reflecting mirror on the side closer to the receiver and the receiver was set to 5 m.
The angle adjustment of the reflecting mirror was performed using the east-west angle adjusting means and the north-south angle adjusting means shown in FIG. Based on the built-in calendar and the angle adjustment data of each reflector with respect to the movement of the sun according to the time of true sun, the rotation of the rotating ring, the forward and backward movement of the turning arm of the turning actuator of the fine adjustment means, The angle of the reflector was adjusted by controlling the forward and backward movement.

Other conditions are as follows.
Blocking (blocking of reflected light by the reflecting mirrors) was set to 0 to 0.2 (that is, 20% or less).
The date and time was 10:00 am Equinox and the declination was 36.8401632 degrees (Spain Almeria).

(Comparative example)
The simulation which condenses sunlight on a solar cell was performed using the conventional tower type solar concentrating power generation apparatus as shown in FIG. The simulation conditions were set as follows.

2400 reflectors having a size of 1.5 m × 1.5 m were installed (the area of the total reflector is 5400 m ² ).
Further, by adjusting the interval between the reflecting mirrors, the blocking ratio was made substantially the same as in the example.
The date and time and place were the same as in the example.

Looking at the results of the simulations of the examples and comparative examples, in the examples, it was possible to collect sunlight stably and uniformly on the solar cells arranged as shown in FIG. As a result, the light condensing range which spreads like 17 and operates efficiently in the solar cell is 40%. Due to such efficient light collection, solar energy could be obtained with about 50% higher efficiency than the comparative example throughout the light collection process.
On the other hand, with respect to cost, the embodiment could be further reduced. In the comparative example, it is necessary to install a CPC or the like as shown in FIG.

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.

DESCRIPTION OF SYMBOLS 1,101 ... Solar condensing power generation apparatus of this invention, 2, 2A-2D ... Reflection line,
3, 3A ... light receiving line, 4, 4A _{1 to} 4A ₆ ... reflector,
5 ... Receiver,
6 ... reflective surface, 7 ... heliostat mechanism, 8 ... east-west angle adjusting means,
9 ... North-south angle adjusting means, 10 ... Rotating ring, 11 ... Frame,
12 ... Roller, 13 ... Motor, 14 ... Arm, 15 ... Actuator,
16, 36 ... Central controller, 17 ... Connecting member,
18 ... fine adjustment means, 19 ... rotating member, 20 ... rotating actuator,
21 ... Axial rod for rotation, 22 ... Arm for rotation,
31 ... Imaging device, 32 ... Arithmetic processing device, 33 ... Image processing device,
34 ... CCD camera,
41 ... Solar cell 42 ... Receiver body 43 ... Cooling mechanism 44 ... Light receiving surface
45 ... Heat exchanger.

Claims (6)

A solar concentrating power generation device having a plurality of reflection lines and one or more light receiving lines,
The plurality of reflection lines are set in parallel in the north-south direction, and a plurality of reflection mirrors that reflect sunlight are installed on the reflection lines in each row, and the plurality of reflection mirrors Has a heliostat mechanism that adjusts the angle of the reflecting surface to follow the movement of the sun,
The one or more light receiving lines are set at a fixed position above and perpendicular to the plurality of reflection lines, and one receiver is installed on each light receiving line,
The receiver is provided with a solar cell, and condenses sunlight reflected light from the plurality of reflecting mirrors on a light receiving surface of the solar cell. Power generation device.   The heliostat mechanism includes an east-west angle adjusting means capable of individually adjusting the reflection surfaces of the plurality of reflectors in the east-west direction and a north-south angle adjusting means capable of individually adjusting the angle in the north-south direction. The solar concentrating power generation apparatus according to claim 1. The east / west angle adjusting means has a rotating ring and a fine adjusting means,
The rotating ring is connected to the plurality of reflecting mirrors through a frame, and an angle of a reflecting surface of the plurality of reflecting mirrors on one reflecting line through the frame by the rotation of the rotating ring. Are adjusted at the same time, and the fine adjustment means is arranged for each of the plurality of reflecting mirrors, and a plurality of reflections adjusted simultaneously by the rotation of the rotating ring by the fine adjustment means. The angle of the reflecting surface of the mirror is additionally fine-tuned individually according to the position of each reflecting mirror,
The north-south angle adjusting means has an actuator,
The actuator is arranged for each reflecting mirror, each actuator has an arm, the arm and the reflecting mirror are connected, and the angle of the reflecting surface of each reflecting mirror is individually determined by the forward and backward movement of the arm. The solar light concentrating power generation device according to claim 1 or 2, wherein the solar concentrating power generation device is adjusted. Having a connecting member for supporting and connecting the plurality of reflecting mirrors on the reflection line of each row;
The connecting member is disposed so as to be inclined so that one end thereof is positioned relatively higher than the other end in the north-south direction, so that the plurality of reflecting mirrors supported by the connecting member has the one end 4. The reflector according to claim 1, wherein the reflector installed on the side of the second side is positioned relatively above the reflector installed on the side of the other end. 5. The solar concentrating power generation device according to item. An imaging device that captures each of the plurality of reflecting mirrors and acquires a real image of each reflecting mirror;
An arithmetic processing device that acquires an ideal image of each reflecting mirror when the reflecting surface is adjusted to an ideal angle in order to reflect sunlight to the receiver, by simulation from the actual sun position;
An image processing device for obtaining an image shift by comparing an actual image and an ideal image of each of the reflecting mirrors;
A central control device for controlling the imaging device, the arithmetic processing device, the image processing device, and the heliostat mechanism;
The heliostat mechanism is controlled by the central control unit based on the image shift and adjusts the angle of the reflecting surface of each reflecting mirror to an ideal angle, and corresponds to the calendar and true sun time. The angle adjustment data of each reflecting mirror with respect to the movement of the sun is incorporated, and the angle of the reflecting surface of each reflecting mirror adjusted to the ideal angle is adjusted based on the built-in data. The solar concentrating power generation device according to any one of claims 1 to 4.   The solar light collecting power generation apparatus according to any one of claims 1 to 5, wherein the receiver includes a cooling mechanism using a heat exchanger.

Images