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WO2009068306A1 - Structure d'appui destinée à des capteurs solaires et comprenant des éléments pivotants - Google Patents

Structure d'appui destinée à des capteurs solaires et comprenant des éléments pivotants Download PDF

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Publication number
WO2009068306A1
WO2009068306A1 PCT/EP2008/010129 EP2008010129W WO2009068306A1 WO 2009068306 A1 WO2009068306 A1 WO 2009068306A1 EP 2008010129 W EP2008010129 W EP 2008010129W WO 2009068306 A1 WO2009068306 A1 WO 2009068306A1
Authority
WO
WIPO (PCT)
Prior art keywords
longitudinal
longitudinal members
scaffold according
solar collectors
members
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.)
Ceased
Application number
PCT/EP2008/010129
Other languages
German (de)
English (en)
Inventor
Uwe Kark
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kark AG
Original Assignee
Kark AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kark AG filed Critical Kark AG
Publication of WO2009068306A1 publication Critical patent/WO2009068306A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for 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
    • F24S23/30—Arrangements for concentrating solar-rays for solar heat collectors with lenses
    • F24S23/31—Arrangements for concentrating solar-rays for solar heat collectors with lenses having discontinuous faces, e.g. Fresnel lenses
    • 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
    • F24S30/428—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis with inclined axis
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/40—Optical elements or arrangements
    • H10F77/42—Optical elements or arrangements directly associated or integrated with photovoltaic cells, e.g. light-reflecting means or light-concentrating means
    • H10F77/484—Refractive light-concentrating means, e.g. lenses
    • 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
    • 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
    • F24S2030/135—Transmissions in the form of threaded elements
    • 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
    • F24S2030/136—Transmissions for moving several solar collectors by common transmission elements
    • 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
    • F24S25/10—Arrangement of stationary mountings or supports for solar heat collector modules extending in directions away from a supporting surface
    • F24S25/13—Profile arrangements, e.g. trusses
    • 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 invention relates to a scaffold for solar collectors consisting of at least two individual pivoting elements, with each of which one or more solar panels can be at least uniaxially tracked the sun.
  • Solar collectors irrespective of their type, reach their maximum efficiency when the solar radiation impinges perpendicularly on the area of the collectors designed to generate electricity and / or heat, or a maximum overall radiation density on the collector surface is achieved. Basically, it is attempted to keep angle deviations from the ideal vertical irradiation low or completely avoided so as to minimize the loss of efficiency occurring.
  • the object of the invention is to provide a scaffold for a plurality of solar collectors, which allows a, least uniaxial tracking, so that the disadvantages known in the art do not or only to a lesser extent occur.
  • the solution consists in the features of claim 1 and preferably those of the subclaims.
  • the solution according to the invention provides a scaffold for solar collectors with individual pivoting elements which comprises at least two transverse struts and at least two longitudinal members attached thereto, wherein the transverse struts and longitudinal members are arranged in a lattice-like manner and the longitudinal members are each fastened along a separate axis to the transverse struts.
  • the longitudinal members are usually connected at their respective ends to the crossbars. But it is also possible that the longitudinal members still extend beyond the transverse bars out.
  • the solar collectors are mounted on the side rails and can be tracked around the pivot axis of the individual side members of the sun. In the uniaxial tracking achieved in this way, the rays fall onto the solar collector surface of a longitudinal member parallel to the plane perpendicular to the solar collector surface, in which the pivot axis of one longitudinal member lies. This level is referred to below as a radiation plane.
  • the position of these axes is significantly influenced by the arrangement of the cross beams.
  • the at least two transverse beams can be mounted at different heights.
  • the pivot axes of the longitudinal members should be located at such a distance from the ground that a rotational movement of the longitudinal members between the two maximum pivot angles is possible without hindrance.
  • the maximum height of the scaffold then results from the distance of the pivot axis from the ground and the maximum vertical extent of the longitudinal members above the pivot axis at any pivot angle between the maximum pivot angles.
  • scaffold heights of less than 2 m can be achieved. Due to this, the scaffolds according to the invention are also suitable for retrofitting on roofs of residential or greenhouses. Even with a subsequent enlargement of the solar collector surface, the scaffold height does not increase. In such a case, rather, additional side rails are installed, which increases the required footprint, but not the support frame height. The susceptibility to wind also remains almost unchanged.
  • the shadow cast by the solar collector surfaces runs essentially parallel to the radiating plane. If the longitudinal members are arranged closely next to one another, then a longitudinal member can at least partly shade off the solar collector surface of a neighboring longitudinal member in the case of a non-horizontal position of the solar collector surfaces. The solar collector surface in the shade can then no longer be used to generate electricity and / or heat and the The efficiency gained by the irradiation parallel to the plane of the radiation is reduced again. It would therefore be advantageous to avoid this shading of the longitudinal members with each other.
  • the optimal for a time for the energy production swing angle of the individual side members of a scaffold according to the invention are usually almost identical.
  • at least some longitudinal members can be mechanically connected to form a group such that the pivoting movement of one longitudinal member is transmitted to the other group members.
  • the longitudinal members are preferably designed to be self-supporting. This means that they retain their shape, regardless of whether solar panels are installed on them or not.
  • the solar collectors do not carry the structure with them.
  • the longitudinal members have a gleichschenklig-triangular cross-section. In an isosceles triangle, two of the three sides - the so-called legs - have the same length. The third page is the base of the triangle. The the
  • Base opposite corner is referred to as a peak.
  • a peak In the case of an equilateral triangle, in which all three sides have the same length, it is a special form of the isosceles triangle. Here you can freely determine which page should be the base. Subsequently, the other definitions for the isosceles triangle apply.
  • a three-dimensional body whose cross-section is an isosceles triangle resembles a wedge.
  • wedge tip refers to the edge of the longitudinal member, which coincides in cross section with the tip of the isosceles triangle.
  • the other two edges are called base edges. The area between the two base edges is the base area, the areas between the wedge tip and one each of the base edges are the leg surfaces.
  • the side members can be provided for one or more solar panels receptacles. It is preferred if a plurality of solar collectors can be mounted one behind the other in the longitudinal direction of the carrier.
  • the width of the base surface of a longitudinal member preferably corresponds approximately to the width or the length of the individual solar collectors, so that a rail solar collectors is provided per longitudinal beam.
  • the side members are preferably all of the same length and are connected to the cross bars so that their respective pivot axis extends centrally along their base surface.
  • the receptacles for the solar collectors are preferably designed so that a induced by the scaffold, mechanical load on the solar panels is avoided as completely as possible.
  • the mechanism for transmitting pivoting movement from one to at least one other longitudinal member may be formed as least a handlebar.
  • This at least one longitudinal bar connects the wedge tips of the at least two longitudinal members, wherein joints are provided at the respective connection points. It is in the at least one handlebar so a pull-push rod that keeps the distance of the wedge tips constant without affecting the possibility of pivoting the side members. If only one longitudinal beam is pivoted, the at least one longitudinal beam connected thereto follows the movement.
  • the longitudinal members are preferably designed in half-timbered construction.
  • longitudinal struts are provided on the wedge tip and on the base edges, which are interconnected by struts.
  • a high rigidity in the longitudinal direction can be achieved with low weight, which in turn facilitates transport and assembly.
  • the scaffold according to the invention is in principle suitable for any type of solar collectors, solar collectors with Fresnel lenses are particularly preferred.
  • Elongated Fresnel lenses focus the incident radiation on a focal line or a line of infinite focal points. In the area of this focal line, an absorption device can be provided, which converts the incident radiation into heat and / or electrical energy.
  • stretched Fresnel lenses are stacked crosswise, it is particularly easy to achieve a punctiform focus.
  • two Frensel lenses which focus the incident radiation in each case focus a focal line, rotated by 90 ° directly above each other.
  • the foci of the individual lenses e.g. High-temperature solar cells are used, which are characterized by a particularly high efficiency.
  • the two Fresnel lenses lie on one another with their smooth sides is, incidentally, irrelevant for focusing in a focal point.
  • the design of the scaffold in half-timbered construction is particularly advantageous for this type of solar collectors, since with appropriate design, the beam paths from the lens to the focal line are not or hardly affected. It proves to be expedient if the struts of the base surface of the longitudinal member run along the boundary between two adjacent solar collectors. Such struts can on the one hand increase the stability of the longitudinal strut. On the other hand, the solar collectors are supported and can additionally be secured along the respective edge.
  • the Fresnel lenses are designed such that their focal line is located along the wedge tip of the respective longitudinal member.
  • a longitudinal beam runs there, it can be designed as a U-profile which is open to the base surface of the longitudinal member. In this profile can then run, for example, a conduit through which a heat-carrying fluid is pumped.
  • the tube is conveniently insulated from the U-profile and the environment, except for the location where the radiation impinges.
  • the individual conduits of all the longitudinal beams are preferably connected to a line loop, i. the heat transfer fluid is pumped into the lines at one end of the loop and then passes through all the conduits before exiting the other end of the line. Between input and output of the line loop results according to the invention, a temperature difference.
  • the connection to the line loop can preferably be done by flexible hoses.
  • photovoltaic cells are arranged along the focal line of the lenses. Due to the high radiation intensity in this area, very high efficiencies can be achieved for power generation. Because of the radiation intensity arise at the
  • Photovoltaic cells very high temperatures, which is why preferably high-temperature solar cells are used. It may also be provided in direct contact with or in small distance to the photovoltaic cells to lay pipes on the side facing away from the Fresnel lenses side of the photovoltaic cells. On the one hand, these can serve as cooling, on the other hand, the dissipated heat can continue to be used.
  • the focal points of the lenses are preferably also along the wedge tip of the respective longitudinal member.
  • photovoltaic cells are provided in these focal points.
  • the uniaxial tracking as can be achieved by the pivoting of the side members, not suitable that the foci of punctiform focusing Fresnel lenses are always at the same place in the wedge tip of the respective longitudinal member. It is therefore preferred that the individual photovoltaic cells are displaceable along the longitudinal struts on which they are located. The photovoltaic cells can always be so
  • Focus can be positioned.
  • the shift can be done automatically, for each cell individually or for several cells of a longitudinal member together.
  • the latter is possible because the focal points of adjacent, point-shaped focusing Fresnel lenses of a longitudinal member move uniformly.
  • a connecting element can be provided which transmits the movement of a photovoltaic cell to the other and so summarizes them to a shift group.
  • the photovoltaic cells may be mounted on a common carriage or on individual carriages interconnected by a linkage.
  • the drive of the carriages can be done for example by a worm-rack drive.
  • the efficiency of the system can be further increased by always positioning a photovoltaic cell in the focal point of a lens. Changes in the beam path due to the solar migration can be compared in real time. It comes to a quasi-biaxial tracking.
  • a connection of the displacement of the individual photovoltaic cells or the shift groups may be provided. in case of a
  • Worm-rack drive can be the waves on which the worm sitting, for example, be connected by a chain or a toothed belt. It is also possible to combine the function of the handlebar and the function of the connection of the sliding mechanisms in one element.
  • the photovoltaic cells can then be cooled, as described above, by means of conduits on the side of the photovoltaic cells facing away from the Fresnel lenses. Optimized heat conductors between photovoltaic cells and the pipes are widely known.
  • photovoltaic or high-temperature solar cells can be provided for power line cable. But it is also possible to use the entire framework, or at least the longitudinal spar in the wedge tip as a ground conductor. This makes it possible to save up to 50% of the total cable length required. If the pipes to Cooling of the photovoltaic or high-temperature solar cells are sufficiently electrically isolated from the carrier in the wedge tip of the longitudinal member, these can be used as a second conductor. The need for cables can be significantly reduced.
  • Fig. 1 A spatial representation of an embodiment of the scaffold according to the invention
  • Fig. Ia an enlarged detail of Fig. 1;
  • Fig. Ib a detailed view of the scaffold of Fig. 1;
  • FIG. 3 shows a cross section through a strut.
  • FIG. 4 shows a cross section through a longitudinal spar with inserted conduit.
  • FIG. 5 shows a cross section through a longitudinal spar with inserted conduit and photovoltaic cell.
  • FIG. 6 shows a further embodiment of the scaffold according to the invention.
  • FIG. 7 shows a sheet-like Fresnel lens
  • a support frame 1 which longitudinal member 10 and two transverse beams 20, 21 comprises.
  • the transverse beams 20, 21 are standardized rectangular profiles. They run parallel and are mounted on supports 22, 23, which are anchored in the ground.
  • the supports 22 of one transverse beam 20 are shorter than the supports 23 to the other transverse spar 21.
  • the longitudinal members 10 of the scaffold 1 have in cross-section the shape of an isosceles triangle and are executed in timber-frame construction.
  • the longitudinal member is composed of longitudinal bars 16, 17 in the wedge tip 11 and on the two base edges 12, 13, as well as from struts 14, 15 together.
  • the side members 10 are connected in the region of their base surface with suspension points 24 to the transverse bars 20, 21 in such a way that they can be pivoted about the axis 18 extending centrally between the base edges 12, 13.
  • the solar collectors 2 are mounted on the base surface of the side members.
  • the distance between the individual suspension points of the side members 10 on the transverse bars 20, 21 is chosen so that two adjacent side members 10 do not shade each other even at maximum pivot angle and incidence of light perpendicular to the solar panels 2.
  • each side member 10 On each side member 10 is a plurality of solar panels 2 place.
  • the solar collectors 2 are mounted in a row on the longitudinal member 10. Thus arise between two adjacent solar panels 2 shock edges 3.
  • the solar collectors 2 are punctiform focusing Fresnel lenses, which focus the radiation incident from the sun onto a focal point.
  • the beam paths from the lens to the focal point should be undisturbed, ie the largest possible area proportion of the solar collectors 2 should be used effectively.
  • the struts 15 (not shown), especially in the region of the base of the longitudinal member 10, do not intersect the beam paths, which is why they run along the abutting edges 3 of the solar collectors 2.
  • the solar collectors 2 rest on the struts 15 and are supported by these. Since the struts 15 run on the edge of the solar collectors 2, the support surface can be selected independently of the dimensions of the strut 15. Since only a small part of the beam paths is disturbed by the solar collectors 2, only a smaller effect on the effective area of the solar collector 2 is produced.
  • the solar collectors 2 are attached both to the mentioned struts 15 and to the longitudinal bars 17 along the base edges 12, 13.
  • the struts 15 and the longitudinal struts 17 thus form a receptacle for the solar collectors 2.
  • Two adjacent longitudinal members 10 are connected in the region of their wedge tips 11 by a handlebar 50.
  • the connection PHg the handlebar 50 to the side members 10 takes place via a hinge 51, whose axis of rotation runs parallel to the pivot axes 18 of the longitudinal member 10.
  • the distance between two adjacent wedge tips 11 is kept constant by the handlebar 50, with the result that, when pivoting the one longitudinal member 10 about its pivot axis 18, the other follows this movement. Since all longitudinal members are interconnected in the illustrated example, only one drive device 52 is necessary in order to set the pivoting angle of all longitudinal members simultaneously.
  • a shield 53 is rotationally fixed at the end facing a cross member 20, a longitudinal member 10 is connected.
  • the shield 53 is perpendicular to the pivot axis 18 and is provided with a slot 54 perpendicular to the base surface of the longitudinal member 10.
  • an electrically operated carriage-screw drive is provided on the one cross member 20 and parallel to this.
  • On the carriage of this drive is a pin 55 which engages in the slot 54 of the shield 53. Since there is a distance between pin and axis of rotation 18 of the longitudinal member 10, a linear movement of the carriage is converted by the interaction of pin 55 and slot 54 in a rotational movement of the longitudinal member 10.
  • the solar collectors 2 are point-focused Fresnel lenses, the focal point of the lenses shifts along the longitudinal struts 16 due to the solar migration and the uniaxial tracking
  • the photovoltaic cells 60 are designed as high-performance solar cells whose surface suitable for the energy conversion in some wa corresponds to the extent of the respective incident beam. All photovoltaic cells 60 of a longitudinal member
  • This carrier 61 is movable along the longitudinal members 16 in the wedge tips 11 of the respective side members 10.
  • This carrier 61 is mounted on two linear bearings 62, 63, which in turn are seated on the longitudinal struts 16 in the wedge tips 11 of the respective side members 10.
  • the one linear bearing 63 is equipped with a carriage-screw drive.
  • the shaft 64 on which the worm of this drive is seated, is continued to the cross member 20 facing the end of the longitudinal member 10.
  • wheels 65 are rotatably connected to the shaft 64.
  • V-belt 66 connect via the wheels 65, the waves 64 of the individual side members 10.
  • the handlebars 50 serve to keep the distance between the wedge tips 11 of the individual longitudinal members 10 constant. Since the wheels 65 also at the wedge tips
  • FIG. 2 shows an exemplary receptacle on a longitudinal spar 17 along a base edge 12, 13.
  • the solar collector 2 is clamped between the longitudinal beam 17 and a counterpart 30.
  • the counterpart 30 is connected by a screw 31 releasably connected to the longitudinal spar 17.
  • the solar collector can expand under the influence of temperature, a free space 32 is provided on its front side, the dimensions of which can change depending on the temperature. So that the end face 4 of the solar collector 2 can move relative to the longitudinal member 17, sliding jaws 33 are provided.
  • the counterpart 30 may extend over the entire length of the longitudinal spar 17 or only over the length of a solar collector 2. However, it is also conceivable to secure the solar collectors 2 by a multiplicity of small counterparts 30.
  • the solar collectors 2 can also be attached to the struts 15.
  • One possibility is shown in FIG. On the strut 15 are on both sides solar panels 2 on.
  • Screw 27 fixed counterpart 34 completes the clamping of the collectors 2. Again, free spaces on the front side 4 of the solar panels 2 are provided, e- as well as sliding blocks 26th
  • a Fresnel lens can be used, in which the incident radiation is focused in a focal line.
  • the focal lines of the Fresnel lenses then coincide with the respective longitudinal beams 16 in the wedge tips 11 of the longitudinal members 10.
  • a longitudinal spar 16 is formed in the wedge tip 11 as an upwardly open U-profile.
  • a conduit 40 surrounded by insulating material 42 runs.
  • the insulating material 42 prevents unwanted heat exchange with the environment. Only the upper region of the conduit is exposed, since at this point the rays bundled by the Fresnel lenses 2 impinge and are absorbed. The liquid flowing through the pipe 40 is thus heated.
  • the conduits 40 of all longitudinal members 10 are connected together to form a line loop. This means that liquid entering the line loop at an entry point will pass through all the pipes 40 before exiting the line loop at one end point.
  • the connection between the individual longitudinal members 10, as well as the supply and removal of the heat-carrying liquid to the input and from the end point are preferably realized by hoses. As a result, the mobility of the scaffold 1 is not limited.
  • FIG. 5 shows a combination of electrical energy and heat transducers in the wedge tips 11 of the side rails 10.
  • the bundled beams first strike a photovoltaic cell 41, where they are partially converted into electrical energy.
  • the excess heat is conducted via the heat conductor 43 to the underlying conduit 40 and discharged through the liquid therein.
  • this achieves a cooling effect for the photovoltaic cell 41 and, on the other hand, the recovered heat can continue to be used.
  • insulating material 42 the heat loss to the environment.
  • Fig. 6 it is shown how a system similar to that of FIG. 1 on the pitched roof 91 of a house 90 can be installed.
  • the supports 22 of one transverse spar 20 are located at the roof edge 93, while the supports 23 of the other transverse spar 21 are provided in the region of the roof ridge 92.
  • the supports 22 and 23 have the same length; the inclination of the longitudinal members 10 relative to the horizontal corresponds to the inclination of the roof 91. Between the wedge tips 11 of the longitudinal member 10 only a small distance must be provided so that the longitudinal members are not hindered in their pivoting movement. Otherwise, the scaffold corresponds to that of FIG. 1.
  • FIG. 7 shows a sheet-shaped lens Fren 80.
  • the exemplarily drawn incident beams 82 are focused by the web-shaped lens 80 onto a focal line 83.
  • FIG. 8 shows a double-layered arrangement 81 of two sheet-like Fresnel lenses 80, 80 '.
  • the two Fresnel lenses are arranged rotated by 90 °.
  • the exemplarily drawn rays 82 which impinge on the arrangement 81 are now focused in a focal point 84.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Photovoltaic Devices (AREA)

Abstract

L'invention concerne une structure d'appui destinée à des capteurs solaires (2) et comprenant des éléments pivotants individuels permettant respectivement à un ou plusieurs capteurs solaires de suivre le soleil selon un axe au moins. La structure d'appui selon l'invention comprend au moins deux traverses (20, 21) sur lesquelles sont fixés au moins deux longerons (10), les traverses (20, 21) et les longerons (10) étant disposés en treillis. Les longerons sont fixés sur les traverses (20, 21) de manière à pouvoir pivoter respectivement autour de leur axe propre (18). La distance entre deux longerons voisins (10) est de préférence sélectionnée de sorte que la surface de chaque longeron (10) prévue pour le placement des capteurs solaires (2) peut être irradiée perpendiculairement dans son intégralité pour l'angle de pivotement maximal. On obtient ainsi un faible encombrement en hauteur de la structure d'appui.
PCT/EP2008/010129 2007-11-28 2008-11-28 Structure d'appui destinée à des capteurs solaires et comprenant des éléments pivotants Ceased WO2009068306A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202007016716.4 2007-11-28
DE202007016716U DE202007016716U1 (de) 2007-11-28 2007-11-28 Stützgerüst für Solarkollektoren mit Schwenkelementen

Publications (1)

Publication Number Publication Date
WO2009068306A1 true WO2009068306A1 (fr) 2009-06-04

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PCT/EP2008/010129 Ceased WO2009068306A1 (fr) 2007-11-28 2008-11-28 Structure d'appui destinée à des capteurs solaires et comprenant des éléments pivotants

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DE (1) DE202007016716U1 (fr)
WO (1) WO2009068306A1 (fr)

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CN102376799A (zh) * 2010-08-09 2012-03-14 杜邦太阳能有限公司 光伏面板模块

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ES1068787Y (es) * 2008-09-26 2009-03-01 Solid Enginyeria S L Estructura de soporte de paneles solares
ITMI20090062A1 (it) * 2009-01-22 2010-07-23 Fidelis S R L Metodo per installare un apparecchiatura per la ricezione e lo sfruttamento dell energia solare
CN101873089B (zh) * 2010-06-03 2012-05-30 常州大学 双螺旋传动跟踪太阳的大面积组合框架
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