solar concentrator

Abstract

To provide a sunlight collection device capable of adjusting the amount of sunlight to be collected (the scale of a system) without the need for a wide and flat land and the need for the re-design of the device according to the scale of the system.SOLUTION: A sunlight collection device 10 includes a heliostat unit 1 having a heliostat 11, and a first body 12 supporting the heliostat 11, the first body 12 of the heliostat unit 1 including a portion extending above the heliostat 11 so that the upper part of the first body 12 upwardly contacts the bottom of another heliostat unit 1, and a light collector unit 2 having a light collector 21, and a second body 22 supporting the light collector 21, the second body 22 of the light collector unit 2 including a portion extending above the light collector 21 so that the upper part of the second body 22 upwardly contacts the bottom of another light collector unit 2.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to solar concentrating devices. [Background technology]

[0002] Sunlight can be used for a variety of purposes. For example, Patent Document 1 discloses a system that uses sunlight to generate power. This system includes a center mirror supported at a height of approximately 20 m from the ground, a power generation area installed below the center mirror and having multiple solar power generation modules, and multiple heliostats arranged radially around the center mirror in a range including west, northeast, and east directions. Sunlight reflected from the multiple heliostats is concentrated on the center mirror and then directed from the center mirror to the power generation area. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-38953 Summary of the Invention [Problem to be solved by the invention]

[0004] In the system of Patent Document 1, multiple heliostats are arranged radially around a center mirror. Therefore, when constructing such a large-scale system, a large area of ​​flat land is required, which limits the locations where it can be constructed. In addition, the device needs to be redesigned each time depending on the amount of sunlight to be concentrated (the scale of the system), which increases the time and cost required to construct the system.

[0005] Taking the above-mentioned problems into consideration, the present disclosure aims to provide a sunlight collecting device that can adjust the amount of sunlight collected (system scale) without requiring a large area of ​​flat land or redesigning the device according to the system scale. [Means for solving the problem]

[0006] One aspect of the present disclosure provides a heliostat unit having a heliostat and a first body supporting the heliostat, wherein the first body extends above the heliostat and an upper portion of the first body includes a portion that contacts a bottom portion of another heliostat unit from below; and a collector unit having a collector that collects light reflected from the heliostat and a second body that supports the collector, wherein the second body extends above the collector and an upper portion of the second body includes a portion that contacts a bottom portion of another heliostat unit from below. the first body includes a loading portion extending above the heliostats, the loading portion including a frame structure and a plate disposed on an upper portion of the frame structure, and the loading portion is disposed so as to be spaced apart from the heliostats in a rearward direction opposite to a direction in which the heliostats reflect light; It is a solar concentrating device.

[0007] The first body and the second body may be separate bodies.

[0008] The first body and the second body may be coupled to one another.

[0009] The height of the second body may be equal to the height of the first body.

[0010] The bottom of the first body may include a first recess, and the top of the first body may include a first protrusion that engages with the first recess of another heliostat unit.

[0011] The first protrusion may be removable from the first body.

[0012] The bottom of the second body may include a second recess, and the top of the second body may include a second protrusion that engages with the second recess of another light collecting unit.

[0013] The second protrusion may be removable from the second body. [Effects of the Invention]

[0014] According to the present disclosure, it is possible to provide a sunlight collecting device that can adjust the amount of sunlight collected (system scale) without requiring a large area of ​​flat land or redesigning the device according to the system scale. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a schematic perspective view showing a sunlight collecting device according to the first embodiment. [Figure 2] FIG. 2 is a schematic side view showing the solar concentrating device of FIG. [Figure 3] FIG. 3 is a schematic plan view showing the solar light collecting device of FIG. [Figure 4] FIG. 4 is a schematic perspective view showing a sunlight collecting system including a plurality of the sunlight collecting devices of FIG. [Figure 5] FIG. 5 is a schematic side view of the solar concentrating system of FIG. [Figure 6] FIG. 6 is a schematic side view showing another solar concentrating system including the solar concentrating device of FIG. [Figure 7] FIG. 7 is a schematic side view showing a sunlight collecting system including a plurality of sunlight collecting devices according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Dimensions, materials, specific numerical values, etc. shown in the embodiments are merely examples for ease of understanding and do not limit the present disclosure unless otherwise specified. Note that in this specification and drawings, elements having substantially the same functions and configurations are designated by the same reference numerals to avoid redundant description. Elements not directly related to the present disclosure are not shown.

[0017] [First embodiment] Fig. 1 is a schematic perspective view showing a sunlight collecting device 10 according to a first embodiment. Fig. 2 is a schematic side view showing the sunlight collecting device 10 of Fig. 1. Fig. 3 is a schematic plan view showing the sunlight collecting device 10 of Fig. 1.

[0018] Referring to FIG. 1 , a solar concentrating device (which may also be simply referred to as an "device" in the present disclosure) 10 includes a heliostat unit 1 and a concentrator unit 2. In this embodiment, the heliostat unit 1 and the concentrator unit 2 are separate bodies. In this embodiment, the heliostat unit 1 and the concentrator unit 2 are disposed on the ground G. The heliostat unit 1 and the concentrator unit 2 may, for example, be mounted on a base (not shown) on the ground G, or may be disposed directly on the ground G.

[0019] The heliostat unit 1 has a heliostat 11 and a first main body 12. The heliostat unit 1 may further include other components not shown (for example, a control device and a power supply for controlling the attitude of the heliostat 11).

[0020] 2, the heliostat 11 reflects sunlight SR to the collector unit 2. The heliostat 11 has one or more plane mirrors. The attitude of the plane mirror (for example, the angle around the vertical axis and the angle around the horizontal axis) is controlled so that the sunlight SR reflected from the plane mirror is guided in a predetermined direction (in this embodiment, a direction parallel to the horizontal direction). For example, the heliostat unit 1 may have a sensor (not shown) for detecting whether the sunlight SR reflected from the plane mirror is guided in the predetermined direction.

[0021] Regarding directions related to the heliostat unit 1, in this disclosure, among horizontal directions, the direction in which the heliostat 11 reflects sunlight SR is referred to as the front (right in FIG. 2), and the opposite direction is referred to as the rear (left in FIG. 2). The horizontal direction perpendicular to the front-to-rear direction is referred to as the left and right.

[0022] The first body 12 supports the heliostat 11. Specifically, the first body 12 includes a support portion 13 for supporting the heliostat 11. With reference to FIG. 1 , the support portion 13 includes a plate 13a and a frame 13b. The lower portion of the heliostat 11 is attached to the plate 13a. For example, the plate 13a has a rectangular shape. The frame 13b has, for example, a rectangular frame shape and surrounds the plate 13a. The plate 13a is connected to the frame 13b.

[0023] The first main body 12 is configured to be able to support other heliostat units 1. Specifically, the first main body 12 includes a loading section 14. The loading section 14 extends higher than the heliostats 11. An upper portion of the loading section 14 includes a portion that overlaps with the bottom of the heliostat unit 1 (specifically, the bottom of the loading section 14) in a plan view. The upper portion of the loading section 14 can come into contact with (or engage with) the bottom of another heliostat unit 1 from below at this overlapping portion. In this embodiment, the loading section 14 has a rectangular parallelepiped outer shape. Also, in this embodiment, the loading section 14 has a multi-stage (four-stage) frame structure. In this embodiment, the shape of the frame of the upper portion of the loading section 14 matches the shape of the frame of the lower portion of the loading section 14 in a plan view. The loading section 14 includes a plate 14a in its upper portion. The plate 14a improves the strength of the frame structure.

[0024] The loading unit 14 is disposed at a distance from the heliostat 11 in the horizontal direction (rearward) so as not to block sunlight SR heading toward the heliostat 11. The distance between the loading unit 14 and the heliostat 11 is set so that the plane mirror of the heliostat 11 does not come into contact with the loading unit 14 when the attitude of the plane mirror is controlled.

[0025] The support section 13 and the loading section 14 described above are connected to each other. For example, the support section 13 and the loading section 14 may be integral, or may be connected by known fastening means such as welding or bolts. In this embodiment, the bottom of the support section 13 and the bottom of the loading section 14 are flush with each other. In other embodiments, the bottom of the support section 13 may be located higher than the bottom of the loading section 14, as long as the loading section 14 extends above the heliostats 11. Referring to FIG. 3 , in this embodiment, the widths (lengths in the left-right direction) of the support section 13 and the loading section 14 are the same.

[0026] 1, the height of first main body 12 (loading section 14) is, for example, about 2 to 3 m. The length (length in the front-rear direction) and width of first main body 12 are, for example, about 2 to 3 m x 2 to 3 m. The size of first main body 12 is not limited to the above and can be changed appropriately according to various requirements.

[0027] The first main body 12 is not limited to the above configuration, and can have other configurations as long as it can support the heliostat 11 and can support other heliostat units 1 from below. For example, the loading section 14 may have an outer shape other than a rectangular parallelepiped. Furthermore, the loading section 14 does not need to have a frame structure, and its outer shape may be closed. The first main body 12 can be formed from various materials, for example, metals such as steel or aluminum.

[0028] 2 , in this embodiment, the collector unit 2 has a collector 21, a second body 22, a shutter 23, and a heating furnace 24. The collector unit 2 may further include other components not shown (for example, a control device and a power supply for controlling the shutter 23 and the heating furnace 24). Note that these control devices and power supplies may be shared with the heliostat unit 1.

[0029] The concentrator 21 focuses the sunlight SR reflected from the heliostat 11 onto the heating furnace 24 as a point. In other embodiments, the concentrator 21 may focus the sunlight SR as a line depending on the application of the sunlight SR. For example, the concentrator 21 may be a Fresnel lens. A Fresnel lens is lighter and less expensive than, for example, a parabolic mirror. Therefore, the use of a Fresnel lens can reduce the weight and manufacturing costs of the concentrator unit 2. In other embodiments, the concentrator 21 may be, for example, a parabolic mirror.

[0030] When a collecting lens (for example, a Fresnel lens) is used as the collector 21, this configuration using the heliostat 11 and the collecting lens has the property that it can collect sunlight SR in the same way even if the distance between the heliostat 11 and the collecting lens is changed. Therefore, in this embodiment, since the heliostat unit 1 and the collector unit 2 are separate, the heliostat unit 1 and the collector unit 2 can be brought close to each other as long as the sunlight SR is not blocked by the collector unit 2. Therefore, the installation area of ​​the sunlight collecting device 10 can be reduced.

[0031] Regarding the directions related to the collector unit 2, in the present disclosure, the horizontal direction in which the collector 21 receives sunlight SR is referred to as the front (left in FIG. 2), and the opposite direction is referred to as the rear (right in FIG. 2). The horizontal direction perpendicular to the front-to-rear direction is referred to as the left-to-right direction.

[0032] The second main body 22 supports the collector 21. Specifically, the second main body 22 includes a support portion 25 for supporting the collector 21. In this embodiment, the support portion 25 supports the collector 21 so that the optical axis of the collector 21 is parallel to the horizontal direction. The support portion 25 includes a vertical frame 25a that supports the collector 21. The vertical frame 25a extends in the vertical direction. Referring to FIG. 3, the support portion 25 includes a horizontal frame 25b that supports the collector 21. The horizontal frame 25b extends in the left-right direction.

[0033] The second body 22 is configured to be able to support another collector unit 2. Specifically, referring to FIG. 2, the second body 22 extends higher than the collector 21. An upper portion of the second body 22 includes a portion that overlaps with the bottom portion of the collector unit 2 (specifically, the bottom portion of the second body 22) in a plan view. The upper portion of the second body 22 can contact (or engage with) the bottom portion of another collector unit 2 from below at this overlapping portion. In this embodiment, the second body 22 has a generally cubic (or rectangular parallelepiped) outer shape. Also, in this embodiment, the second body 22 has a multi-stage (three-stage) frame structure. The shape of the frame of the upper portion of the second body 22 generally matches the shape of the frame of the lower portion of the second body 22 in a plan view. Referring to FIG. 1, the second body 22 includes a plate 26 for supporting the heating furnace 24 on its second stage. The second body 22 also includes a plate 27 at its bottom, which improves the strength of the frame structure.

[0034] The height of the second body 22 is equal to the height of the first body 12, for example, about 2 to 3 m. The length and width of the second body 22 may also be equal to the length and width of the first body 12, for example, about 2 to 3 m by 2 to 3 m. Alternatively, the length and width of the second body 22 may not be equal to the length and width of the first body 12.

[0035] The second body 22 is not limited to the above configuration and may have other shapes as long as it can support the collector 21 and can support other collector units 2 from below. For example, the second body 22 may have an outer shape other than a cube. Furthermore, the second body 22 does not need to have a frame structure and may have a closed outer shape. The second body 22 can be formed from various materials, for example, metals such as steel or aluminum.

[0036] The shutter 23 adjusts the amount of sunlight SR incident on the collector 21 (i.e., incident on the heating furnace 24). Specifically, the shutter 23 is disposed in front of the collector 21 and blocks some or all of the sunlight SR reflected from the heliostat 11. For example, the shutter 23 has a structure similar to that of a blind. For example, the shutter 23 is operable between a fully open position, a fully closed position, and a half-open position between the fully open and fully closed positions. For example, the shutter 23 is linearly adjustable to any half-open position between the fully open and fully closed positions. The shutter 23 is controlled manually or automatically so that the device that uses sunlight SR (in this embodiment, the heating furnace 24) is adjusted to an optimal temperature.

[0037] Furnace 24 uses concentrated solar SR, for example, to produce hydrogen and carbon by thermal decomposition of methane (CH4 + solar heat = 2H2 + C). However, the solar SR concentrated by apparatus 10 can be used for a variety of other applications. For example, solar SR may be used for producing synthesis gas by steam reforming of methane (CH4 + H2 + solar heat = 3H2 + CO), or for heat storage (sensible heat storage, latent heat storage, or chemical heat storage), etc.

[0038] The heating furnace 24 is disposed behind the collector 21 so as to be located on the focal point of the collector 21. The positions of the collector 21 and the heating furnace 24 may be fixed with respect to the second body 22. Alternatively, the position of at least one of the collector 21 or the heating furnace 24 may be adjustable in at least one of the vertical direction and the horizontal direction. Such an adjustment mechanism may be provided on at least one of the vertical frame 25 a and the horizontal frame 25 b or the plate 26.

[0039] Fig. 4 is a schematic perspective view showing a sunlight concentrating system 100 including a plurality of the sunlight concentrating devices 10 of Fig. 1. Fig. 5 is a schematic side view showing the sunlight concentrating system 100 of Fig. 4.

[0040] 4 and 5, the sunlight collecting system 100 includes a plurality of sunlight collecting devices 10 arranged vertically and horizontally. As described above, the heliostat unit 1 can be stacked on the first body 12 of another heliostat unit 1, and the collector unit 2 can be stacked on the second body 22 of another collector unit 2. Therefore, the plurality of sunlight collecting devices 10 can be stacked vertically and used. The sunlight collecting devices 10 can also be arranged horizontally (left and right). For example, in FIGS. 4 and 5, eight sunlight collecting devices 10 are arranged in two rows and four columns. In this way, since the plurality of sunlight collecting devices 10 are arranged in two rows, the sunlight collecting system 100 of this embodiment can double the amount of sunlight SR collected compared to a system in which the number of heliostats is increased only horizontally. The number of rows and columns is not limited to the above and can be adjusted appropriately depending on the required amount of sunlight SR.

[0041] FIG. 6 is a schematic side view of another solar concentrating system 200 including the solar concentrating device 10 of FIG.

[0042] In the sunlight collecting system 200, the heliostat unit 1 and the collector unit 2 of the sunlight collecting device 10 are each loaded on a separate mobile body (for example, a vehicle such as a truck) 50. As described above, in the sunlight collecting device 10, the heliostat unit 1 and the collector unit 2 are separate bodies, and therefore they can be loaded on separate mobile bodies 50. For example, if the heliostat unit 1 and the collector unit 2 each have a height of about 2 to 3 m and a length and width of about 2 to 3 m × 2 to 3 m, they can be loaded separately on a general medium-sized truck (for example, a truck with a maximum load capacity of about 5 tons). This improves the mobility of the sunlight collecting device 10. Furthermore, as shown in FIG. 6 , the sunlight collecting device 10 can be used on the vehicle 50 by arranging the heliostat unit 1 and the collector unit 2 facing each other on the vehicle 50. This allows the sunlight collecting device 10 to be moved to a desired location and used quickly at that location. Moreover, after using the sunlight collecting device 10, the sunlight collecting device 10 can be quickly returned to its original location. Moreover, in this embodiment, the distance between the heliostat unit 1 and the collector unit 2 can be easily adjusted by moving the vehicle 50. Moreover, in this embodiment, by having two vehicles 50 run side by side with the heliostat unit 1 and the collector unit 2 facing each other, the sunlight collecting device 10 can be used while the vehicles 50 are running.

[0043] The sunlight collecting device 10 according to the first embodiment as described above includes: a heliostat unit 1 having a heliostat 11 and a first main body 12 supporting the heliostat 11, where the first main body 12 extends above the heliostat 11 and includes a portion where an upper part of the first main body 12 contacts a bottom part of another heliostat unit 1 from below; and a collector unit 2 having a collector 21 and a second main body 22 supporting the collector 21, where the second main body 22 extends above the collector 21 and includes a portion where an upper part of the second main body 22 contacts a bottom part of another collector unit 2 from below. Therefore, the upper part of the first main body 12 can support another heliostat unit 1. Furthermore, the upper part of the second main body 22 can support another collector unit 2. In this way, since the heliostat unit 1 can be mounted on top of the first body 12 of another heliostat unit 1, and the concentrator unit 2 can be mounted on top of the second body 22 of another concentrator unit 2, as shown in FIGS. 4 and 5 , the solar concentrating device 10 can be used by being stacked vertically. Therefore, a large area of ​​flat land is not required. Furthermore, by changing the number of solar concentrating devices 10 according to the required scale of the solar concentrating system 100, 200, the amount of sunlight to be concentrated (the scale of the system) can be adjusted without the need for redesigning the device. Furthermore, since the solar concentrating device 10 is modularized as the heliostat unit 1 and the concentrator unit 2, the production cost per device can be reduced by mass-producing the heliostat unit 1 and the concentrator unit 2. Furthermore, even in the event of a failure, only the failed heliostat unit 1 or concentrator unit 2 can be stopped and replaced, eliminating the need to suspend operation of the entire solar light concentrating system 100, 200 for an extended period of time due to the failure of a single heliostat unit 1 or concentrator unit 2.

[0044] Moreover, in the sunlight collecting device 10, the first body 12 and the second body 22 are separate bodies. Therefore, the distance between the heliostat unit 1 and the collector unit 2 can be adjusted according to the properties of the ground G on which the sunlight collecting device 10 is installed, etc.

[0045] Furthermore, in the solar collecting device 10, the height of the second main body 22 is equal to the height of the first main body 12. Therefore, when the heliostat unit 1 and the collector unit 2 are placed on a flat surface, the heliostat unit 1 and the collector unit 2 can be loaded without adjusting the heights of the heliostat unit 1 and the collector unit 2.

[0046] [Second embodiment] 7 is a schematic side view showing a sunlight collecting system 300 including a plurality of sunlight collecting devices 20 according to the second embodiment. The second embodiment differs from the sunlight collecting device 10 of the first embodiment in that the sunlight collecting device 20 further includes a loading unit 3 and auxiliary mechanisms 4, 12a, 12b, 12c, 22a, 22b, and 22c. Other aspects of the sunlight collecting device 20 are similar to those of the sunlight collecting device 10, and therefore a description thereof will be omitted.

[0047] The loading unit 3 is separate from the heliostat unit 1 and the collector unit 2. The loading unit 3 has a configuration similar to that of the loading section 14 of the above-described heliostat unit 1. Therefore, a detailed description thereof will be omitted.

[0048] In the sunlight collecting system 300, two loading units 3 are arranged behind the first-stage heliostat unit 1. The second-stage heliostat unit 1 is arranged straddling the first-stage heliostat unit 1 and the loading unit 3. One loading unit 3 is arranged behind the second-stage heliostat unit 1. The third-stage heliostat unit 1 is arranged straddling the second-stage heliostat unit 1 and the loading unit 3. With this configuration, multiple heliostat units 1 are arranged in a staircase pattern. With this configuration, the upper-stage heliostat unit 1 is supported by both the lower-stage heliostat unit 1 and the loading unit 3. Therefore, the stability of the loading of the heliostat units 1 is increased. Furthermore, with the above configuration, space is secured above the lower-stage heliostat 11. Therefore, it is possible to prevent the upper heliostat unit 1 from blocking the sunlight SR heading toward the lower heliostat 11.

[0049] Similarly, two loading units 3 are arranged behind the first-stage collector unit 2. The second-stage collector unit 2 is arranged straddling the first-stage collector unit 2 and the loading unit 3. One loading unit 3 is arranged behind the second-stage collector unit 2. The third-stage collector unit 2 is arranged straddling the second-stage collector unit 2 and the loading unit 3. With this configuration, multiple collector units 2 are arranged in a staircase pattern. With this configuration, the collector unit 2 on the upper stage is supported by both the collector unit 2 on the lower stage and the loading unit 3. This increases the stability of the loading of the collector units 2. Note that the numbers of heliostat units 1, collector units 2, and loading units 3, as well as the arrangement of the number of stages, are not limited to those described above and can be adjusted appropriately depending on the required amount of sunlight SR.

[0050] The auxiliary mechanism includes a pillar 4 that supports the loaded heliostat unit 1 and the collector unit 2. The pillar 4 is a long member that extends vertically to connect the lower loading unit 3 and the loading portion 14 of the upper heliostat unit 1. Similarly, the pillar 4 extends vertically to connect the lower loading unit 3 and the second body 22 of the upper collector unit 2. The pillar 4 prevents the heliostat unit 1 and the collector unit 2 from moving. For example, the pillar 4 is connected to the heliostat unit 1, the collector unit 2, and the loading unit 3 by known fixing means such as bolts. The pillar 4 can be formed of various materials, for example, metals such as steel or aluminum.

[0051] The auxiliary mechanism also includes a recess (first recess) 12a provided in the bottom of the first main body 12 of the heliostat unit 1, and a protrusion (first protrusion) 12b provided in the upper part of the first main body 12. The lower protrusion 12b is inserted into the upper recess 12a. In this embodiment, the protrusion 12b is prepared as a block that is removable from the first main body 12. A recess 12c for receiving the protrusion 12b is formed in the upper part of the first main body 12. In other embodiments, the protrusion 12b may be provided integrally with the first main body 12. For example, the protrusion 12b extends in the left-right direction. The recess 12a is formed in the frame structure of the first main body 12 so as to receive the protrusion 12b. A plurality of recesses 12a are provided in the bottom of the first main body 12 along the front-rear direction. The engagement between the protrusions 12b and the recesses 12a prevents the heliostat unit 1 from moving in the front-rear direction.

[0052] Similarly, the auxiliary mechanism includes a recess (second recess) 22a provided in the bottom of the second body 22 of the concentrator unit 2 and a protrusion (second protrusion) 22b provided in the upper part of the second body 22. The lower protrusion 22b is inserted into the upper recess 22a. In this embodiment, the protrusion 22b is prepared as a block removable from the second body 22. A recess 22c for receiving the protrusion 22b is formed in the upper part of the second body 22. For example, the protrusion 22b may be the same as the block used as the protrusion 12b in the heliostat unit 1. The block can be formed of various materials, such as metals such as steel or aluminum. In other embodiments, the protrusion 22b may be formed integrally with the second body 22. For example, the protrusion 22b extends in the left-right direction. The recess 22a is formed in the frame structure of the second body 22 to receive the protrusion 22b. A plurality of recesses 22a are provided along the front-rear direction on the bottom of the second main body 22. The engagement between the protrusions 22b and the recesses 22a prevents the collector unit 2 from moving in the front-rear direction.

[0053] The sunlight collecting device 20 according to the second embodiment as described above has the same effects as the sunlight collecting device 10 described above.

[0054] Moreover, in the sunlight collecting device 20, the bottom of the first main body 12 includes a recess 12a, and the upper part of the first main body 12 includes a protrusion 12b that engages with the recess 12a of another heliostat unit 1. Therefore, it is possible to prevent the loaded heliostat unit 1 from moving.

[0055] Furthermore, in the solar concentrating device 20, the protrusion 12b is formed as a block that is removable from the first body 12. Therefore, the protrusion 12b can also be used in other heliostat units 1.

[0056] Furthermore, in the solar collecting device 20, the bottom of the second body 22 includes a recess 22a, and the top of the second body 22 includes a protrusion 22b that engages with the recess 22a of another collector unit 2. Therefore, it is possible to prevent the stacked collector units 2 from moving.

[0057] Moreover, in the solar concentrating device 20, the protrusion 22b is detachable from the second body 22. Therefore, the protrusion 22b can be used in other concentrator units 2. Furthermore, in the solar concentrating device 20, the protrusion 22b is the same as the block used as the protrusion 12b in the heliostat unit 1. Therefore, this block can be used in both the heliostat unit 1 and the concentrator unit 2.

[0058] Although the embodiments have been described above with reference to the accompanying drawings, the present disclosure is not limited to the above-described embodiments. It is clear that a person skilled in the art can conceive of various changes or modifications within the scope of the claims, and it is understood that such changes or modifications also fall within the technical scope of the present disclosure.

[0059] For example, in the above embodiment, the heliostat unit 1 and the collector unit 2 are separate bodies. However, in other embodiments, the heliostat unit 1 and the collector unit 2 may be connected to each other by a member such as a frame. In this case, it is not necessary to adjust the relative positions between the heliostat unit 1 and the collector unit 2 during installation. In this case, it is preferable that the connecting member is thin so as not to block sunlight SR heading toward the heliostat 11 in the lower stage.

[0060] 7, a loading unit 3 is used to load the heliostat unit 1 and the concentrator unit 2. However, in other embodiments, concrete or soil may be used instead of or in addition to the loading unit 3.

[0061] The auxiliary mechanisms 4, 12a, 12b, 12c, 22a, 22b, and 22c shown in FIG. 7 may be applied to the solar concentrating system 100 shown in FIGS.

[0062] This disclosure can contribute, for example, to Sustainable Development Goals (SDGs): Goal 7 "Ensure access to affordable, reliable, sustainable and modern energy," Goal 9 "Build resilient infrastructure, promote sustainable industrialization and foster innovation," and Goal 12 "Ensure sustainable consumption and production patterns." [Explanation of symbols]

[0063] 1 heliostat unit 2 Concentrator Unit 10,20 Solar concentrator 11 Heliostat 12 First Body 12a First recess 12b First protrusion 21 Concentrator 22 Second Body 22a Second recess 22b Second protrusion

Claims

1. a heliostat unit having a heliostat and a first body supporting the heliostat, wherein the first body extends above the heliostat, and an upper portion of the first body includes a portion that contacts a bottom portion of another heliostat unit from below; A collector unit including a collector that collects light reflected from the heliostat and a second body that supports the collector, wherein the second body extends above the collector, and an upper portion of the second body includes a portion that contacts a bottom portion of another collector unit from below; Equipped with the first body includes a loading portion extending above the heliostat, the loading section includes a frame structure and a plate disposed on an upper portion of the frame structure; The loading unit is disposed so as to be spaced rearward from the heliostat in a direction opposite to a direction in which the heliostat reflects light. Solar concentrator.

2. The solar concentrating device according to claim 1 , wherein the first body and the second body are separate bodies.

3. The solar concentrating device of claim 1 , wherein the first body and the second body are coupled to each other.

4. 4. The solar concentrating device according to claim 1, wherein the height of the second body is equal to the height of the first body.

5. 5. The solar concentrating device according to claim 1, wherein a bottom of the first body includes a first recess, and an upper part of the first body includes a first protrusion that engages with the first recess of another of the heliostat units.

6. The solar concentrating device of claim 5 , wherein the first protrusion is detachable from the first body.

7. 7. The solar concentrating device according to claim 1, wherein a bottom of the second body includes a second recess, and an upper part of the second body includes a second protrusion that engages with the second recess of another of the concentrator units.

8. The solar concentrating device of claim 7 , wherein the second protrusion is detachable from the second body.

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