Classifications

• • 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
  • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
  • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
• • 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
  • 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

Definitions

• This invention relates to a structure for supporting reflective panels for concentration solar collectors, in particular of the linear parabolic type, made to be assembled on the site of the solar system, guaranteeing a high geometrical precision without the need for complex adjustments of the relative position of the components constituting the structure.
• the structure for supporting the mirrors assumes particular importance considering the fact that it is necessary to guarantee, on the one hand, a high geometrical accuracy in order to maintain high optical efficiency of the device and, on the other hand, low production costs as it is low intensity energy which requires very large capturing surfaces.
• the structure for supporting the reflecting panels constituting precisely the mobile part of the linear parabolic solar collector, is normally composed of one or more modules connected in series, wherein each module is composed of a series of cross-members which support the reflecting panels, a load-bearing beam to which the cross-members are connected, and connecting elements between adjacent modules.
• Structures of this type are very expensive and require complex optimisation during positioning operations. More specifically, the critical aspects are the installation of the structure on the base and the connecting means of the mirrors to the structure. These aspects are very important as it is necessary to guarantee a correct receiving and concentration effect of the solar radiation on the receiving tube. This has a negative effect on the cost of production and installation of the modules.
• the technical purpose which forms the basis of this invention is to provide a structure for supporting reflective panels for concentration solar collectors which overcomes the above-mentioned drawbacks of the prior art.
• the aim of this invention is to provide a structure for supporting reflective panels for concentration solar collectors which is constructionally simple and inexpensive.
• the aim of the invention is also to provide a structure for supporting reflective panels for concentration solar collectors which reduces the complex optimisation activities during installation.
• FIG. 1 is a schematic perspective representation of a structure for supporting reflective panels in accordance with this invention according to a configuration of use.
• FIG. 2 is a schematic representation of a detail of the structure of Figure 1. Detailed description of preferred embodiments of the invention
• the structure denoted in its entirety by the numeral 1 , comprises a central support 2, rotatable about an adjusting axis "X", and at least one cross- member 3 mounted on the central support 2 and extending between a first upper end 3a and a second lower end 3b.
• the central support 2 is preferably defined by a tube with a circular cross section, however it may be made in accordance with any embodiment, provided it is designed to define a rotation about the adjustment axis "X".
• a movement unit associated with a base (also not illustrated) and configured for supporting the central support 2 and for rotating it about the adjusting axis "X" to define a movement of tracking the solar radiation, in such a way as to optimise the energy efficiency of the solar concentrator made with the structure 1.
• the cross-member 3 defines, on the relative front side (defined relative to the "front" area where the solar concentration occurs), a concave receiving area which can be configured for the installation of a plurality of reflective panels 4 (four, in the embodiment illustrated).
• the cross-member 3 is fixed to the central support 2 in such a way that the central support 2 is positioned in an intermediate portion of the cross- member 3 between the first and second ends 3a, 3b of the cross-member 3.
• the cross-member 3 comprises a lattice structure having at least one front tubular element 5, facing towards the receiving area, and a rear tubular element 6 connected to the front tubular element 5 and facing a rear area opposite the receiving area.
• tubular elements 5, 6 in the embodiment illustrated are defined by metal profiles with a square cross section, however, they could have different cross sections.
• the front 5 and rear 6 tubular elements are respectively fixed to a front portion and a rear portion of the central support 2, in particular by means of threaded members, pins or welding or, in any case, more generally speaking, quick coupling solutions which can be performed in-situ at the time of installation by simple drilling of the profiled sections.
• the cross-member 3 defines two sections located on opposite sides of the central support 2, in particular an upper cross-section and a lower cross-section, and in this context each front 5 and rear 6 tubular element comprises, respectively, a first portion 5a, 6a forming part of the upper cross-section of the cross-member 3 and a second portion 5b, 6b forming part of the lower cross-section of the cross-member 3.
• the two portions 5a, 5b; 6a, 6b of each tubular element 5, 6 are connected together (by removable means or by welding or made in one piece in a single tubular element defining the two portions) and connected to the central support 2.
• the front tubular element 5 has a concave configuration to define a concentration effect of the solar radiation.
• first portion 5a and the second portion 5b of the front tubular element 5 are rectilinear and are positioned in a mutually unaligned position to define a front concavity suitable for a solar concentration effect.
• the front tubular element 5 has a 'V shape with the concavity facing away from the central support 2.
• first portion 5a and the second portion 5b of the front tubular element 5 have a shorter length than the length, respectively, of the first portion 6a and of the second portion 6b of the rear tubular element 6.
• the first portion 6a and the second portion 6b of the rear tubular element 6 are also rectilinear and are positioned in a mutually unaligned position to define a front concavity suitable for a solar concentration effect.
• the two portions 5a, 5b of the front tubular element 5 each define a respective area of application of at least one respective panel reflective 4 whilst each portion 6a, 6b of the rear tubular element 6 defines, in the relative cross section between the connection point to the front tubular element 5 and the respective end 3a, 3b opposite the central support 2, a respective area of application of at least one respective reflective panel 4.
• first portion 5a of the front tubular element 5 and the first portion 6a of the rear tubular element 6 are positioned according to non- parallel orientations to each other and, similarly, the second portion 5b of the front tubular element 5 and the second portion 6b of the rear tubular element 6 are also positioned according to non-parallel orientations to each other.
• the structure 1 preferably also comprises one or more reinforcing elements 7 which are positioned to mutually connect front 5 and rear 6 tubular elements and which act in conjunction with the tubular elements 5, 6 to form the lattice structure of the cross-member.
• the structure 1 also comprises one or more supporting arms 8 for a receiver tube (not illustrated and of a known type), each arm having an end applied to the central support 2 and/or to at least one of the above- mentioned front 5 and rear 6 tubular elements by means of threaded members, pins or welding and extending outwards towards the area of concavity defined by the cross-member 2.
• the plurality of reflective panels 4 are connected to at least the front tubular element 5 using adjustable threaded members 9. Only some of which are shown in Figure 1.
• Each of the reflective panels 4 is associated with at least three adjustable threaded members 9, two of which are positioned at opposite ends of the panel 4 and the third in a central portion of the panel 4.
• the reflective panels 4 are made in the form of a rectangle having two long sides and two short sides.
• the reflective panels 4 are connected to at least the front tubular element 5 by the adjustable threaded members 9, only some of which are shown in Figure 1.
• Each reflective panel 4 is associated with at least three threaded members 9, two located at opposite ends of the panel 4 and the third in a central portion of the panel 4.
• the adjustability of the above-mentioned threaded members makes it possible to determine with high precision the centring of the panels relative to the area of the concentration of the radiation and to set a correct curvature of the panels 4.
• the structure 1 preferably comprises at least two cross-members 3 for each module, positioned on opposite sides, however it is possible that the structure comprises any number of cross- members, in particular only one or more than two.
• each reflective panel 4 has three threaded members 9 on its long sides and two threaded members 9 on its short sides.
• each reflective panel 4 is fixed to the two cross-members 3 by at least six threaded members 9 (three per cross-member).
• this arrangement makes the structure 1 more integral with the reflective panels 4 which otherwise, each having a different reaction to thermal expansion, would lose the preferred arrangement in the configuration of use.
• the number of reflective panels 4 may also be different from the one expressly described above and illustrated in Figure 1 .
• the present invention achieves the preset aims, overcoming the disadvantages of the prior art.
• the structure according to the invention is very inexpensive as it is made by simple tubular elements (in the form, for example, of metal profile sections), the assembly of which can be carried out in situ by means of drilling holes and applying respective connecting elements.
• the structure is also easy to adjust, thus allowing a marked energy efficiency.

Landscapes

• 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)
• Optical Elements Other Than Lenses (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=57209803

Family Applications (1)

Country Status (3)

Families Citing this family (1)

Family Cites Families (4)

• 2016
  • 2016-06-27 IT ITUA2016A004686A patent/ITUA20164686A1/it unknown
• 2017
  • 2017-06-23 WO PCT/IB2017/053757 patent/WO2018002790A1/en unknown
  • 2017-06-23 EP EP17749517.3A patent/EP3475627A1/en not_active Withdrawn

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