US20170115034A1 - Solar collector - Google Patents
Solar collector Download PDFInfo
- Publication number
- US20170115034A1 US20170115034A1 US15/315,529 US201515315529A US2017115034A1 US 20170115034 A1 US20170115034 A1 US 20170115034A1 US 201515315529 A US201515315529 A US 201515315529A US 2017115034 A1 US2017115034 A1 US 2017115034A1
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- United States
- Prior art keywords
- mirror
- assembly
- wheel
- plate
- envelope
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000001125 extrusion Methods 0.000 claims description 21
- 238000004873 anchoring Methods 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229920006335 epoxy glue Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000013529 heat transfer fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
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- F24J2/0015—
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
- F24S20/25—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants using direct solar radiation in combination with concentrated radiation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/0547—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection
-
- F24J2/38—
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/80—Arrangements for concentrating solar-rays for solar heat collectors with reflectors having discontinuous faces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/82—Arrangements for concentrating solar-rays for solar heat collectors with reflectors characterised by the material or the construction of the reflector
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
- F24S30/42—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis
- F24S30/425—Horizontal axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/20—Arrangements for controlling solar heat collectors for tracking
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/183—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors specially adapted for very large mirrors, e.g. for astronomy, or solar concentrators
-
- F24J2002/0092—
-
- F24J2002/4667—
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S2020/10—Solar modules layout; Modular arrangements
- F24S2020/17—Arrangements of solar thermal modules combined with solar PV modules
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S2023/83—Other shapes
- F24S2023/834—Other shapes trough-shaped
- F24S2023/835—Other shapes trough-shaped asymmetric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
- F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
- F24S2025/6005—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules by screwed connection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S2030/10—Special components
- F24S2030/13—Transmissions
- F24S2030/133—Transmissions in the form of flexible elements, e.g. belts, chains, ropes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
Definitions
- the present invention relates to a system for concentration of solar energy to generate heat and/or power. More specifically, the present invention is concerned with a system of modular solar units.
- An object of the invention is an assembly of units consisting of mirrors assembled along at least one parabolic arch, each mirror comprising two opposing lateral edges and opposing inner and outer longitudinal edges, each mirror being longitudinally secured to another mirror along their respective inner longitudinal edges by at least one securing device positioned at the centre of the parabolic arch, and secured at each lateral edge to wheels supports.
- FIG. 1 is a top view of an assembly according to an embodiment of an aspect of the present invention
- FIG. 2A is a perspective view of the assembly of FIG. 1 ;
- FIG. 2B is an exploded view of the assembly of FIG. 1 ;
- FIG. 3A is a schematical exploded view of the internal structure of a mirror according to an embodiment of an aspect of the present invention.
- FIG. 3B shows a detail of FIG. 3A ;
- FIG. 4A is a bottom view of a mirror according to an embodiment of an aspect of the present invention.
- FIG. 4B is a side view of a mirror according to an embodiment of an aspect of the present invention.
- FIG. 5A is an exploded view of a wheel, with cross plates, reinforcements and fixation holes according to an embodiment of an aspect of the present invention
- FIG. 5B is a perspective view of a wheel according to an embodiment of an aspect of the present invention.
- FIG. 6 is a side view of a cross plate of the wheel of FIG. 5 ;
- FIG. 7 is an exploded view of a wheel support according to an embodiment of an aspect of the present invention.
- FIG. 8A is a top view of the wheel support of FIG. 7 ;
- FIG. 8B is a perspective view of the wheel support of FIG. 7
- FIG. 8C is a side view of the wheel support of FIG. 7 ;
- FIG. 8D is an end view of the wheel support of FIG. 7 ;
- FIG. 9A is a perspective view of a wheel support allowing anchoring of an assembly according to an embodiment of an aspect of the present invention.
- FIG. 9B is a side view of the wheel support of FIG. 9A ;
- FIG. 10A is a perspective view of a wheel support with a motorised unit according to an embodiment of an aspect of the present invention.
- FIG. 10B is an exploded view of the wheel support of FIG. 10A ;
- FIG. 11 schematically shows a unit of two mirror sections connected using a continuous central member according to an embodiment of an aspect of the present invention
- FIG. 12 is a side view of the unit of FIG. 11 ;
- FIG. 13 schematically shows a unit of two mirror sections connected using connecting members according to an embodiment of an aspect of the present invention
- FIG. 14 shows an securing device between two mirror sections according to another embodiment of an aspect of the present invention.
- FIG. 15A - FIG. 15E are side views of an assembly in different angular orientation orientations according to an embodiment of an aspect of the present invention.
- FIG. 1 illustrates a collector according to an embodiment of an aspect of the present invention.
- the illustrated collector consists of a structural row of units each comprising two mirror sections 6 a , 6 b symmetrically positioned relative to a concentrator line 5 , which extends at the center of the two mirror sections 6 a , 6 b and contains a heat-transfer fluid, along a parabolic arch (see FIG. 14 for example), and wheels 4 of a smaller size than the assembled mirror sections 6 a , 6 b , i.e. the radius D/2 of the wheels 4 is smaller than the width d of each section 6 a , 6 d (D ⁇ 2d).
- the assembly of the two mirror sections 6 a , 6 b can pivot completely from a position in which the concave surface of the collector, formed by the two mirror sections 6 a , 6 b , is oriented upwards (see FIG. 15D ) to a position in which the convex surface of the collector, formed by the two mirror sections 6 a , 6 b , is oriented upwards (see FIG. 15A ).
- Each mirror 6 a , 6 b comprise two opposing lateral edges 25 , 27 and two opposing inner 21 and outer 23 longitudinal edges, each one of the two mirrors being longitudinally secured with the other one, i) along their respective inner longitudinal edges 23 by at least one securing device positioned at the centre of the parabolic arch they form and discussed hereinbelow in relation to FIGS. 11-14 for example; and ii) at each lateral edge 25 , 27 by a wheel support 31 at at least two distinct support points 39 , 33 (see FIG. 2 ).
- FIG. 2B shows the assembly of mirror sections 6 a , 6 b , wheels 4 and the concentrator line 5 .
- Supporting arms, or caloarms 13 support the concentrator line 5 between the wheels 4 , at the center of the parabolic arch.
- Such supporting arms 13 located only at the center of the parabolic arch, as opposed to at its extremities, allow uniting the assembly on as many points and thus distributing the loads uniformly.
- FIG. 3A is an exploded schematic view of the sandwich composition of a mirror section.
- Each mirror section is structuring. Different layers form an internal structure that is non uniform in the body thereof. Details of reinforcing elements between the mirrors and the wheels are also shown.
- Structuring elements comprising for example a mirror plate 12 , a rear plate 14 , an inner extrusion 9 , i.e. along the inner longitudinal edge 23 , an outer extrusion 10 , i.e. along the outer longitudinal edge 21 , and an intermediate longitudinal reinforcement 2 , form an envelope and allow distributing the load on a large surface thus reducing the risks of tearing or breakage of the mirrors.
- Mirror anchoring rods 130 provide a mechanical link between the wheels and the mirror sections.
- a lower bow 1 allows rigidifying the structure at the position of the anchoring rods 130 .
- the internal structure of the mirror thus comprises at least two inner layers, i. e. an upper layer 15 , based on a triaxle glass fiber or carbon fiber for example, of a thickness forming preferably at most 5% of the thickness of the mirror, and a lower layer 16 , based on rigid foam such as polystyrene for example.
- an upper layer 15 based on a triaxle glass fiber or carbon fiber for example, of a thickness forming preferably at most 5% of the thickness of the mirror
- a lower layer 16 based on rigid foam such as polystyrene for example.
- Out of the two outer layers forming the envelope, i.e. the mirror plate 12 and the rear plate 14 both in aluminum for example, the mirror plate 12 is treated to yield a reflecting power.
- the layers are glued together using epoxy glue for example.
- FIG. 4B is a side view of the mirror showing the mirror anchoring rods 130 .
- the lower layer 16 may comprise three panels 16 a , 16 b and 16 c .
- the lateral edges 25 , 27 of the mirror sections have two widths s and S, with s smaller tan S, forming a sufficient opening for clearance of the wheels (see FIG. 1 for example).
- This shape of the lateral edges 25 , 27 of the mirror sections allows using wheels 4 all having a same diameter and smaller than the assembled mirror sections (s ⁇ S), so as to allow rotation of the assembled mirrors on up to 275° without interference with the supports of the wheels.
- a mirror section Due to the position of the mirror anchoring rods 130 in relation to each mirror section, a mirror section, locally, i.e. at the positions of the mirror anchoring rods 130 , needs be reinforced so as to ensure distribution of mechanical stresses, as illustrated in FIG. 3B : the outer extrusion 10 , the mirror plate 12 , the inner extrusion 9 , and the rear plate 14 provide such reinforcement, by forming an envelope, i.e. a closed mirror structure, of a cell type, shown on FIG. 4B .
- Such sectional inertia in relation to axis x and y ensures structural rigidity to the assembly. This structural rigidity translates into torsional strength and bending strength, over large mirror sections.
- the wheels 4 may be formed out of a square tube for example. They transmit a controlled rotation movement to the mirrors and are used as uniting elements between longitudinally adjacent mirror sections s 1 , s 2 , s 3 , s 4 (see for example FIGS. 1 and 2 ).
- FIG. 5 show an assembly of a wheel 4 with cross plates 2 and reinforcements 300 allowing supporting and positioning of the wheels.
- the cross plates 2 allow securing the lateral edges 25 , 27 of the mirrors to the wheels 4 .
- Mirror fixation holes 7 receive the mirror anchoring rods 130 (see FIG. 3 b ), so as to precisely position the mirrors and yield the precise desired parabolic arch, thereby ensuring optical precision at the focus of the parabola and reduced assembly time.
- These cross plates 2 are very precisely laser cut with a predetermined positioning of the fixation holes 7 .
- These cross plates 2 are then secured to the wheels 4 using bolts and provided with the structural reinforcements 300 in such a way as to yield mechanical strength between each cross plate.
- the mirror sections may be submitted to lateral forces originating from a variety of sources.
- Simple thermal expansion of a 30 meter-long row of mirrors affects the assembly significantly between summer and winter for example.
- the reinforcements 300 of the cross plates 2 prevent the cross plates 2 from bending when submitted to such forces for example.
- FIG. 6 is a side view of a cross plate 2 of a wheel. Precise location of the holes 7 is shown, as well as fixation holes 42 between the cross plates 2 and the wheels 4 and fixation holes 7 of the mirrors 6 to the cross plates 2 .
- FIG. 7 is an exploded view of a wheel support 31 , comprising lateral bows 30 and radial supports 10 .
- Adjusting rods 20 connect the wheel support 31 , via radial supports 10 , to a head anchor 42 supported by a anchoring post 100 (see FIGS. 10, 14 ), allowing adjusting the radial supports 10 in relation to two axes, which permits the optical adjustment of the collector.
- Rollers 50 allow the wheels to rotate on the radial supports 10 with limited friction.
- the width of the radial supports 10 allows accommodating thermal expansion of a row of an assembled collector.
- the lateral bows 30 are all identical, which simplifies inventory.
- FIG. 8 show the wheel support 31 of FIG. 7 once assembled.
- a width of about 200 mm between the lateral bows 30 allows absorbing variations in the position of the wheels due to thermal expansion of the materials, for example due to temperature variations between winter and summer times.
- the wheel support 31 secured by the adjusting rods 20 , in oblong apertures in the head anchors 42 for example, to the head anchors 42 , may be adjusted in translation and in rotation in such a way as to accommodate variations of the ground-anchoring elements, such as the posts 100 ( FIG. 15 ), thus allowing the precision required for aligning and balancing a row as assembled shown in FIGS. 1 and 2 for example.
- FIG. 9 show a wheel support 110 , typically at the end of a row of an assembly of units of the invention, which is used essentially for vertically securing the row to anchor heads 42 , or beams for example (see FIG. 2 ).
- the parabolic shape of the collector is exposed to lift and drag forces. These forces tend to move the collector vertically, either upwards or downwards. The resulting force on the collector may vary depending on the inclination of the mirrors and of the trajectory of the wind.
- Supports 101 are thus used to keep the mirrors in place along the vertical axis with a limited friction opposed to the rotation of the wheels.
- the support 101 allows rotation of the system, thermal expansion of the rows, and securing the row to the anchor head 42 .
- An external device 90 generally consisting of a metal plate or of a cable for example, is camber secured to the wheel 4 , so as to keep the wheel on its support.
- FIG. 10A shows an assembled view
- FIG. 10B shows an exploded view of a wheel support 50 , of the type illustrated in FIGS. 7 and 8 and further provided with a motorised rotation unit.
- the mechanised unit is positioned at the center of the assembly for example (see FIG. 2B ), or at an extremity thereof, so that the assembly can be made to completely pivot on wheel supports 31 into a so called closed or sheltered mode for example ( FIG. 15A ).
- the motorised wheel support 50 illustrated in FIG. 10 , is easily assembled and compact.
- Such a motorised wheel besides the same functions as the intermediate wheels, performs the mechanical driving of the row, thanks to a rack system or a toothed wheel for example.
- the motorised unit provides driving the wheel, using a driving belt for example, or a chain, which plays the role of a retaining device 9 , a motor able to operate in two directions and variable speed and powering the rotation of the row and resistant to bad weather, or gears and bearings, and in turn allows driving the whole assembly in an accurate tracking of the sun. It also allows pivoting the assembly to different positions, from 0 corresponding to the closed or sheltered mode of the collector, to about 275°, as schematically shown in FIG. 14 .
- a fixation bow may be used, configured so as not to interfere with the rotation movement.
- FIG. 11 illustrates an embodiment according to an aspect of the present invention, of a unit of two mirror sections 6 a , 6 b .
- the securing device between the mirror sections 6 a , 6 b is a continuous longitudinal member 110 having a Z cross section, positioned between the two mirror sections 6 a , 6 b .
- the member 110 comprises a first surface 111 connected to a second surface 113 by a body 115 forming the central part of the Z shape, the first surface 111 being secured along the inner longitudinal edge 23 a of the first mirror section 6 a and the second surface 113 being secured along the inner longitudinal edge 23 b of the second mirror section 6 b , thus forming a unit 1000 .
- the unit 1000 thus formed has a Z cross section, and comprises two mirrors sections 6 a , 6 b offset one relative to the other by the body 115 of the continuous longitudinal member 110 , i.e. the two mirrors are placed along two offset parabolic arches, hence two focal lengths.
- the offset between the two parabolic arches, each one with its mirror allows obtaining two solar concentration zones, i.e. two distinct focal lines (See FIG. 13 ).
- Such an assembly of two mirrors by a continuous longitudinal member 110 having a Z section yields a unit 1000 that has bending strength, while allowing reducing the thickness of the mirrors 6 a , 6 b , i.e. the total cost of each mirror square meter.
- such a unit 1000 allows using large sized mirrors 6 a , 6 b.
- FIG. 12 is a side view of the assembly of FIG. 11 . It shows the profile of the central rigidifying member 110 . As occurs in steel I-beams for example, the Z section of this member 110 allows significantly rigidifying the assembly along the focal axis of the virtual parabola.
- FIG. 13 illustrates another embodiment of a unit according to an aspect of the present invention, in which the securing device between the mirror sections 6 a , 6 b consists of connecting members 210 .
- the securing device between the mirror sections 6 a , 6 b consists of connecting members 210 .
- two connecting members 210 are positioned between the mirror sections 6 a , 6 b .
- Each connecting member 210 has a Z cross section, with a first surface 211 connected to a second surface 213 by a body 215 forming the central part of the Z shape, the first surface 211 being secured along the inner longitudinal edge 23 a of the first mirror section 6 a and the second surface 213 being secured along the inner longitudinal edge 23 b of the second mirror section 6 b , thus forming a unit 200 .
- the unit 200 thus formed has a Z cross section, and comprises two mirrors sections 6 a , 6 b positioned on two parabolic arches offset one relative to the other by the body 215 of the connecting members 210 , hence two focal lengths.
- using discontinuous connecting members 210 allows a flow of air or liquid between the mirror sections 6 a , 6 b , i.e. in between the free spaces between the connecting members 210 .
- the mirror section 6 a may be used to heat the fluid in the concentrator line by directing the solar rays onto the first zone, for thermal conversion, while solar rays reflected by the mirror 6 b are directed to photovoltaic cells provided on zone B for example, for photoelectric conversion.
- FIG. 14 illustrates a securing device between the mirror sections 6 a , 6 b in a symmetrical assembly, i.e. along a single parabolic arch, as opposed to two offset parabolic arches.
- the securing device between the mirror sections 6 a , 6 b comprises brackets 35 supported at an end of the supporting arms 13 opposing an end of the supporting arms 13 provided with tongs 37 that grip the concentrator line 5 and rigidify the elements forming the parabola.
- the brackets 35 attach to the outer extrusions 23 a and 23 b respectively of the mirror sections a shown on FIG. 14 .
- the securing members 110 , 210 may be used as bearing points for the supporting arms 13 of the concentrator line 5 (See FIG. 13 ).
- At least a first one of the two mirrors comprises lateral edges 25 , 27 resting on a wheel support and two inner 23 and outer 21 longitudinal edges, the inner longitudinal edge 23 being secured by a securing device to the second one of the mirrors, the outer longitudinal edge 21 being free (see FIG. 2 ).
- the inner longitudinal edge 23 together with the inner extrusion 9 , ensures the structural strength required for supporting the supporting arms 13 .
- the supporting arms 13 support the concentrator line 5 , for example using tongs 37 at a first end thereof (see FIG. 14 for example). Leak tightness at the outer longitudinal edge 21 is ensured by the outer extrusion 10 of the mirror, which also reinforces the cohesion between the elements forming the mirror as discussed in relation to FIG. 3A for example.
- the lateral edges 25 , 27 absorb loads applied to the mirrors and transfer these loads to the wheel supports.
- the securing device between the two mirror sections 6 a , 6 b may thus be configured so as to optimize at least one of the following features: bending strength and dissipation of over-pressure in openings between consecutive securing elements (see for example FIGS. 13, 14 ).
- the simplified concept and combination of supporting function to optical positioning function allows a significant reduction of the number of components required for assembly, hence time and assembly parts savings of about 50% compared to systems having a supporting structure coupled to a reflective element.
- the mirrors according to the invention can be efficiently stored and transported into very small spaces such as a freight container.
- the closed-cell structure of the mirror as detailed in relation to FIG. 3 for example, i.e. comprising elements all over the perimeter of the mirror that cooperate together to yield a very rigid structure, has a high torsional strength as well as a high bending strength.
- a structure allows reducing the thickness of the plates 12 and 14 , in aluminum for example, which can be 0.020′′ for example (see FIG. 3 ).
- Such high torsional and bending strengths combine into a high resistance to environment challenges (rain, hail, snow, strong winds etc. . . . ), while securing the optical configuration required for concentration of solar rays.
Abstract
An assembly of units comprised of mirrors assembled along at least one parabolic arc, each mirror having two opposing lateral edges and opposing longitudinal internal and external edges, each of the two mirrors being longitudinally secured to the other mirror along their respective longitudinal internal edges by at least one securing device positioned at the centre of the parabolic arc; and secured at each lateral edge to the wheel supports.
Description
- The present invention relates to a system for concentration of solar energy to generate heat and/or power. More specifically, the present invention is concerned with a system of modular solar units.
- An object of the invention is an assembly of units consisting of mirrors assembled along at least one parabolic arch, each mirror comprising two opposing lateral edges and opposing inner and outer longitudinal edges, each mirror being longitudinally secured to another mirror along their respective inner longitudinal edges by at least one securing device positioned at the centre of the parabolic arch, and secured at each lateral edge to wheels supports.
- Other objects, advantages and functions of the resent invention will become apparent in the following description of possible embodiments, given as examples only, in relation to the following drawings.
- In the appended drawings:
-
FIG. 1 is a top view of an assembly according to an embodiment of an aspect of the present invention; -
FIG. 2A is a perspective view of the assembly ofFIG. 1 ; -
FIG. 2B is an exploded view of the assembly ofFIG. 1 ; -
FIG. 3A is a schematical exploded view of the internal structure of a mirror according to an embodiment of an aspect of the present invention; -
FIG. 3B shows a detail ofFIG. 3A ; -
FIG. 4A is a bottom view of a mirror according to an embodiment of an aspect of the present invention; -
FIG. 4B is a side view of a mirror according to an embodiment of an aspect of the present invention; -
FIG. 5A is an exploded view of a wheel, with cross plates, reinforcements and fixation holes according to an embodiment of an aspect of the present invention; -
FIG. 5B is a perspective view of a wheel according to an embodiment of an aspect of the present invention; -
FIG. 6 is a side view of a cross plate of the wheel ofFIG. 5 ; -
FIG. 7 is an exploded view of a wheel support according to an embodiment of an aspect of the present invention; -
FIG. 8A is a top view of the wheel support ofFIG. 7 ; -
FIG. 8B is a perspective view of the wheel support ofFIG. 7 -
FIG. 8C is a side view of the wheel support ofFIG. 7 ; -
FIG. 8D is an end view of the wheel support ofFIG. 7 ; -
FIG. 9A is a perspective view of a wheel support allowing anchoring of an assembly according to an embodiment of an aspect of the present invention; -
FIG. 9B is a side view of the wheel support ofFIG. 9A ; -
FIG. 10A is a perspective view of a wheel support with a motorised unit according to an embodiment of an aspect of the present invention; -
FIG. 10B is an exploded view of the wheel support ofFIG. 10A ; -
FIG. 11 schematically shows a unit of two mirror sections connected using a continuous central member according to an embodiment of an aspect of the present invention; -
FIG. 12 is a side view of the unit ofFIG. 11 ; -
FIG. 13 schematically shows a unit of two mirror sections connected using connecting members according to an embodiment of an aspect of the present invention; -
FIG. 14 shows an securing device between two mirror sections according to another embodiment of an aspect of the present invention; and -
FIG. 15A -FIG. 15E are side views of an assembly in different angular orientation orientations according to an embodiment of an aspect of the present invention. -
FIG. 1 illustrates a collector according to an embodiment of an aspect of the present invention. The illustrated collector consists of a structural row of units each comprising twomirror sections concentrator line 5, which extends at the center of the twomirror sections FIG. 14 for example), andwheels 4 of a smaller size than the assembledmirror sections wheels 4 is smaller than the width d of eachsection 6 a, 6 d (D<2d). The assembly of the twomirror sections mirror sections FIG. 15D ) to a position in which the convex surface of the collector, formed by the twomirror sections FIG. 15A ). - Each
mirror lateral edges longitudinal edges 23 by at least one securing device positioned at the centre of the parabolic arch they form and discussed hereinbelow in relation toFIGS. 11-14 for example; and ii) at eachlateral edge wheel support 31 at at least twodistinct support points 39, 33 (seeFIG. 2 ). -
FIG. 2B shows the assembly ofmirror sections wheels 4 and theconcentrator line 5. Supporting arms, orcaloarms 13 support theconcentrator line 5 between thewheels 4, at the center of the parabolic arch. Such supportingarms 13, located only at the center of the parabolic arch, as opposed to at its extremities, allow uniting the assembly on as many points and thus distributing the loads uniformly. -
FIG. 3A is an exploded schematic view of the sandwich composition of a mirror section. Each mirror section is structuring. Different layers form an internal structure that is non uniform in the body thereof. Details of reinforcing elements between the mirrors and the wheels are also shown. Structuring elements, comprising for example amirror plate 12, arear plate 14, aninner extrusion 9, i.e. along the innerlongitudinal edge 23, anouter extrusion 10, i.e. along the outerlongitudinal edge 21, and an intermediatelongitudinal reinforcement 2, form an envelope and allow distributing the load on a large surface thus reducing the risks of tearing or breakage of the mirrors.Mirror anchoring rods 130 provide a mechanical link between the wheels and the mirror sections. Alower bow 1 allows rigidifying the structure at the position of the anchoringrods 130. The internal structure of the mirror thus comprises at least two inner layers, i. e. anupper layer 15, based on a triaxle glass fiber or carbon fiber for example, of a thickness forming preferably at most 5% of the thickness of the mirror, and alower layer 16, based on rigid foam such as polystyrene for example. Out of the two outer layers forming the envelope, i.e. themirror plate 12 and therear plate 14, both in aluminum for example, themirror plate 12 is treated to yield a reflecting power. The layers are glued together using epoxy glue for example. -
FIG. 4B is a side view of the mirror showing themirror anchoring rods 130. As shown inFIG. 4A , thelower layer 16 may comprise threepanels FIG. 1 for example). This shape of the lateral edges 25, 27 of the mirror sections allows usingwheels 4 all having a same diameter and smaller than the assembled mirror sections (s<S), so as to allow rotation of the assembled mirrors on up to 275° without interference with the supports of the wheels. Due to the position of themirror anchoring rods 130 in relation to each mirror section, a mirror section, locally, i.e. at the positions of themirror anchoring rods 130, needs be reinforced so as to ensure distribution of mechanical stresses, as illustrated inFIG. 3B : theouter extrusion 10, themirror plate 12, theinner extrusion 9, and therear plate 14 provide such reinforcement, by forming an envelope, i.e. a closed mirror structure, of a cell type, shown onFIG. 4B . - Each mirror has a sectional inertia at the gravity center of at least lx=1.34 E+008 and ly=2.11 E+009. Such sectional inertia in relation to axis x and y ensures structural rigidity to the assembly. This structural rigidity translates into torsional strength and bending strength, over large mirror sections.
- The
wheels 4, as shown onFIG. 5, 9 or 10 for example, may be formed out of a square tube for example. They transmit a controlled rotation movement to the mirrors and are used as uniting elements between longitudinally adjacent mirror sections s1, s2, s3, s4 (see for exampleFIGS. 1 and 2 ). -
FIG. 5 show an assembly of awheel 4 withcross plates 2 andreinforcements 300 allowing supporting and positioning of the wheels. Thecross plates 2 allow securing the lateral edges 25, 27 of the mirrors to thewheels 4. Mirror fixation holes 7 receive the mirror anchoring rods 130 (seeFIG. 3b ), so as to precisely position the mirrors and yield the precise desired parabolic arch, thereby ensuring optical precision at the focus of the parabola and reduced assembly time. Thesecross plates 2 are very precisely laser cut with a predetermined positioning of the fixation holes 7. Thesecross plates 2 are then secured to thewheels 4 using bolts and provided with thestructural reinforcements 300 in such a way as to yield mechanical strength between each cross plate. Indeed, the mirror sections may be submitted to lateral forces originating from a variety of sources. Simple thermal expansion of a 30 meter-long row of mirrors affects the assembly significantly between summer and winter for example. Thereinforcements 300 of thecross plates 2 prevent thecross plates 2 from bending when submitted to such forces for example. -
FIG. 6 is a side view of across plate 2 of a wheel. Precise location of theholes 7 is shown, as well as fixation holes 42 between thecross plates 2 and thewheels 4 andfixation holes 7 of themirrors 6 to thecross plates 2. -
FIG. 7 is an exploded view of awheel support 31, comprising lateral bows 30 and radial supports 10. Adjustingrods 20 connect thewheel support 31, via radial supports 10, to ahead anchor 42 supported by a anchoring post 100 (seeFIGS. 10, 14 ), allowing adjusting the radial supports 10 in relation to two axes, which permits the optical adjustment of the collector.Rollers 50 allow the wheels to rotate on the radial supports 10 with limited friction. The width of the radial supports 10 allows accommodating thermal expansion of a row of an assembled collector. The lateral bows 30 are all identical, which simplifies inventory. -
FIG. 8 show thewheel support 31 ofFIG. 7 once assembled. A width of about 200 mm between the lateral bows 30, in case of a typical assembly of a length of 100′ for example, allows absorbing variations in the position of the wheels due to thermal expansion of the materials, for example due to temperature variations between winter and summer times. As discussed hereinabove, thewheel support 31, secured by the adjustingrods 20, in oblong apertures in the head anchors 42 for example, to the head anchors 42, may be adjusted in translation and in rotation in such a way as to accommodate variations of the ground-anchoring elements, such as the posts 100 (FIG. 15 ), thus allowing the precision required for aligning and balancing a row as assembled shown inFIGS. 1 and 2 for example.FIG. 9 show awheel support 110, typically at the end of a row of an assembly of units of the invention, which is used essentially for vertically securing the row to anchorheads 42, or beams for example (seeFIG. 2 ). Indeed, during high winds, the parabolic shape of the collector is exposed to lift and drag forces. These forces tend to move the collector vertically, either upwards or downwards. The resulting force on the collector may vary depending on the inclination of the mirrors and of the trajectory of the wind.Supports 101 are thus used to keep the mirrors in place along the vertical axis with a limited friction opposed to the rotation of the wheels. Thesupport 101 allows rotation of the system, thermal expansion of the rows, and securing the row to theanchor head 42. Anexternal device 90, generally consisting of a metal plate or of a cable for example, is camber secured to thewheel 4, so as to keep the wheel on its support. - For the remaining supports in the row,
FIG. 10A shows an assembled view andFIG. 10B shows an exploded view of awheel support 50, of the type illustrated inFIGS. 7 and 8 and further provided with a motorised rotation unit. In order to allow rotation of one or more units of collectors, the mechanised unit is positioned at the center of the assembly for example (seeFIG. 2B ), or at an extremity thereof, so that the assembly can be made to completely pivot on wheel supports 31 into a so called closed or sheltered mode for example (FIG. 15A ). Themotorised wheel support 50, illustrated inFIG. 10 , is easily assembled and compact. Such a motorised wheel, besides the same functions as the intermediate wheels, performs the mechanical driving of the row, thanks to a rack system or a toothed wheel for example. - The motorised unit provides driving the wheel, using a driving belt for example, or a chain, which plays the role of a
retaining device 9, a motor able to operate in two directions and variable speed and powering the rotation of the row and resistant to bad weather, or gears and bearings, and in turn allows driving the whole assembly in an accurate tracking of the sun. It also allows pivoting the assembly to different positions, from 0 corresponding to the closed or sheltered mode of the collector, to about 275°, as schematically shown inFIG. 14 . - At the position of the
supports 50, at least oneretaining device 9 is configured to prevent the wheel from detaching from the supporting structure on which the wheel support is set, while driving it. For the remaining, non-motorised, wheels, a fixation bow may be used, configured so as not to interfere with the rotation movement. -
FIG. 11 illustrates an embodiment according to an aspect of the present invention, of a unit of twomirror sections mirror sections longitudinal member 110 having a Z cross section, positioned between the twomirror sections member 110 comprises afirst surface 111 connected to asecond surface 113 by abody 115 forming the central part of the Z shape, thefirst surface 111 being secured along the innerlongitudinal edge 23 a of thefirst mirror section 6 a and thesecond surface 113 being secured along the innerlongitudinal edge 23 b of thesecond mirror section 6 b, thus forming aunit 1000. Theunit 1000 thus formed has a Z cross section, and comprises twomirrors sections body 115 of the continuouslongitudinal member 110, i.e. the two mirrors are placed along two offset parabolic arches, hence two focal lengths. The offset between the two parabolic arches, each one with its mirror, allows obtaining two solar concentration zones, i.e. two distinct focal lines (SeeFIG. 13 ). Such an assembly of two mirrors by a continuouslongitudinal member 110 having a Z section yields aunit 1000 that has bending strength, while allowing reducing the thickness of themirrors unit 1000 allows using largesized mirrors -
FIG. 12 is a side view of the assembly ofFIG. 11 . It shows the profile of thecentral rigidifying member 110. As occurs in steel I-beams for example, the Z section of thismember 110 allows significantly rigidifying the assembly along the focal axis of the virtual parabola. -
FIG. 13 illustrates another embodiment of a unit according to an aspect of the present invention, in which the securing device between themirror sections members 210. For example, two connectingmembers 210 are positioned between themirror sections member 210 has a Z cross section, with afirst surface 211 connected to asecond surface 213 by abody 215 forming the central part of the Z shape, thefirst surface 211 being secured along the innerlongitudinal edge 23 a of thefirst mirror section 6 a and thesecond surface 213 being secured along the innerlongitudinal edge 23 b of thesecond mirror section 6 b, thus forming aunit 200. Theunit 200 thus formed has a Z cross section, and comprises twomirrors sections body 215 of the connectingmembers 210, hence two focal lengths. In comparison to the centralcontinuous member 110 ofFIG. 11 , using discontinuous connectingmembers 210 allows a flow of air or liquid between themirror sections members 210. - As schematically shown on
FIG. 12 , in the case of an attachment between themirror sections FIGS. 11 and 13 for example, an hybrid application may be contemplated. Using a concentrator line comprising two zones of distinct circumferences A and B as diagrammatically shown inFIG. 12 for example, themirror section 6 a may be used to heat the fluid in the concentrator line by directing the solar rays onto the first zone, for thermal conversion, while solar rays reflected by themirror 6 b are directed to photovoltaic cells provided on zone B for example, for photoelectric conversion. -
FIG. 14 illustrates a securing device between themirror sections mirror sections brackets 35 supported at an end of the supportingarms 13 opposing an end of the supportingarms 13 provided withtongs 37 that grip theconcentrator line 5 and rigidify the elements forming the parabola. Thebrackets 35 attach to theouter extrusions FIG. 14 . - The securing
members arms 13 of the concentrator line 5 (SeeFIG. 13 ). - In all cases, at least a first one of the two mirrors comprises
lateral edges longitudinal edge 23 being secured by a securing device to the second one of the mirrors, the outerlongitudinal edge 21 being free (seeFIG. 2 ). The innerlongitudinal edge 23, together with theinner extrusion 9, ensures the structural strength required for supporting the supportingarms 13. The supportingarms 13 support theconcentrator line 5, forexample using tongs 37 at a first end thereof (seeFIG. 14 for example). Leak tightness at the outerlongitudinal edge 21 is ensured by theouter extrusion 10 of the mirror, which also reinforces the cohesion between the elements forming the mirror as discussed in relation toFIG. 3A for example. The lateral edges 25, 27 absorb loads applied to the mirrors and transfer these loads to the wheel supports. - The securing device between the two
mirror sections FIGS. 13, 14 ). - The simplified concept and combination of supporting function to optical positioning function allows a significant reduction of the number of components required for assembly, hence time and assembly parts savings of about 50% compared to systems having a supporting structure coupled to a reflective element. Moreover, the mirrors according to the invention can be efficiently stored and transported into very small spaces such as a freight container.
- The closed-cell structure of the mirror, as detailed in relation to
FIG. 3 for example, i.e. comprising elements all over the perimeter of the mirror that cooperate together to yield a very rigid structure, has a high torsional strength as well as a high bending strength. Such a structure allows reducing the thickness of theplates FIG. 3 ). Such high torsional and bending strengths combine into a high resistance to environment challenges (rain, hail, snow, strong winds etc. . . . ), while securing the optical configuration required for concentration of solar rays. - The scope of the claims should not be limited by the embodiments set forth in the examples, but should be given the broadest interpretation consistent with the description as a whole.
Claims (15)
1. Assembly of units, each unit consisting of mirrors assembled according to at least one parabola arch, each mirror comprising two opposing lateral edges and opposing inner and outer longitudinal edges, each one of the two mirrors being:
longitudinally secured to the other mirror along respective inner longitudinal edges by at least one securing device positioned at the centre of the parabolic arch; and
secured by each lateral edge to wheel supports.
2. Assembly as of claim 1 , comprising a concentrator line extending between the mirrors, wherein the concentrator line is supported between two consecutive wheel supports at the centre of the parabolic arch.
3. Assembly as of claim 1 , wherein each mirror comprises an envelope and an internal structure, said envelope comprising a mirror plate, a rear plate, an inner extrusion along the inner longitudinal edge, an outer extrusion along the outer longitudinal edge, at least one of said mirror plate and rear plate having a reflective power.
4. Assembly as of claim 1 , wherein each mirror comprises an envelope and an internal structure, said envelope comprising a mirror plate, a rear plate, an inner extrusion along the inner longitudinal edge, an outer extrusion along the outer longitudinal edge, at least one of said mirror plate and rear plate having a reflective power, and wherein each mirror section is connected, at each lateral end, by anchoring rod, to wheels supported by wheel supports.
5. Assembly as of claim 1 , wherein each mirror comprises an envelope and an internal structure, said envelope comprising a mirror plate, a rear plate, an inner extrusion along the inner longitudinal edge, an outer extrusion along the outer longitudinal edge, at least one of said mirror plate and rear plate having a reflective power, and wherein said envelope comprises an intermediate longitudinal reinforcement.
6. Assembly as of claim 1 , wherein each mirror comprises an envelope and an internal structure, said envelope comprising a mirror plate, a rear plate, an inner extrusion along the inner longitudinal edge, an outer extrusion along the outer longitudinal edge, at least one of said mirror plate and rear plate having a reflective power, and wherein said internal structure comprises at least an upper layer and a lower layer.
7. Assembly as of claim 1 , wherein each mirror comprises an envelope and an internal structure, said envelope comprising a mirror plate, a rear plate, an inner extrusion along the inner longitudinal edge, an outer extrusion along the outer longitudinal edge, at least one of said mirror plate and rear plate having a reflective power, said internal structure comprising at least an upper layer and a lower layer, wherein said upper layer is based on a triaxle glass fiber or carbon fiber.
8. Assembly as of claim 1 , wherein each mirror comprises an envelope and an internal structure, said envelope comprising a mirror plate, a rear plate, an inner extrusion along the inner longitudinal edge, an outer extrusion along the outer longitudinal edge, at least one of said mirror plate and rear plate having a reflective power, said internal structure comprising at least an upper layer and a lower layer, wherein said upper layer has a thickness forming at most 5% of the thickness of the mirror.
9. Assembly as of claim 1 , wherein each mirror comprises an envelope and an internal structure, said envelope comprising a mirror plate, a rear plate, an inner extrusion along the inner longitudinal edge, an outer extrusion along the outer longitudinal edge, at least one of said mirror plate and rear plate having a reflective power, said internal structure comprising at least an upper layer and a lower layer, wherein said lower layer is based on rigid foam.
10. Assembly as of claim 1 , wherein each mirror has a sectional inertia at the gravity center of at least lx=1.34 E+008 and ly=2.11 E+009.
11. Assembly as of claim 1 , the securing device comprising brackets connecting respective inner longitudinal edges of the mirrors.
12. Assembly as of claim 1 , wherein the securing device has a Z section, the device comprising a first surface secured along an inner longitudinal edge of a first one of the mirrors and a second surface secured along an inner longitudinal edge of a second one of the mirrors, said first and second surfaces being offset one relative to the other, the device connecting the two mirrors along two parabolic arches offset one relative to the other.
13. Assembly as of claim 1 , wherein each wheel support supports a wheel, each wheel comprising:
at least one wheel of a closed section, transferring a controlled rotation movement to the mirrors; and
at least one cross-plate, which secures the wheel to a lateral edge of a mirror.
14. Assembly as of claim 1 , wherein each wheel support supports a wheel, each wheel comprising at least one wheel of a closed section, transferring a controlled rotation movement to the mirrors, and at least one cross-plate, which secures the wheel to a lateral edge of a mirror; said assembly comprising, at the position of each wheel support, at least one retaining device configured to prevent detachment of the wheel.
15. Assembly as of claim 1 , wherein each wheel support comprises at least one radial support adjustable in relation to two axes.
Applications Claiming Priority (3)
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CA2853844 | 2014-06-06 | ||
CA2853844 | 2014-06-06 | ||
PCT/CA2015/050516 WO2015184550A1 (en) | 2014-06-06 | 2015-06-04 | Solar collector |
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US20170115034A1 true US20170115034A1 (en) | 2017-04-27 |
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US15/315,529 Abandoned US20170115034A1 (en) | 2014-06-06 | 2015-06-04 | Solar collector |
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WO (1) | WO2015184550A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2020113266A1 (en) * | 2018-12-04 | 2020-06-11 | Vast Solar Pty Ltd | A heliostat sub-assembly |
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US20060157050A1 (en) * | 2003-07-01 | 2006-07-20 | Peter Le Lievre | Carrier for a solar energy reflector element |
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US20120081806A1 (en) * | 2009-06-09 | 2012-04-05 | Vetraria Biancadese Di Lucatello & C. Sas | Support structure for solar plants |
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DE102010006532A1 (en) * | 2010-02-01 | 2011-08-04 | Solarlite GmbH, 17179 | Segment of a solar collector and solar collector |
US9192194B2 (en) * | 2011-07-27 | 2015-11-24 | Yazin Fakhouri | Modular storage receptacle for smoking material, system for storing smoking material, and method for using same |
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2015
- 2015-06-04 US US15/315,529 patent/US20170115034A1/en not_active Abandoned
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US4456332A (en) * | 1980-04-07 | 1984-06-26 | Atlantic Richfield Company | Method of forming structural heliostat |
US20060150967A1 (en) * | 2003-01-24 | 2006-07-13 | Erwin Hoelle | Solar collector |
US20060157050A1 (en) * | 2003-07-01 | 2006-07-20 | Peter Le Lievre | Carrier for a solar energy reflector element |
US20060092535A1 (en) * | 2004-11-03 | 2006-05-04 | Romeo Robert C | Carbon fiber reinforced composite mirror and method of making the same |
US20100051021A1 (en) * | 2007-03-30 | 2010-03-04 | Amaton Sa | Parabolic trough collector |
US20110220098A1 (en) * | 2008-04-18 | 2011-09-15 | Agc Glass Europe | Solar energy reflector |
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WO2020113266A1 (en) * | 2018-12-04 | 2020-06-11 | Vast Solar Pty Ltd | A heliostat sub-assembly |
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