Classifications

• • 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
  • F24S23/77—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with flat reflective plates
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S10/00—Solar heat collectors using working fluids
  • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
  • F24S10/74—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits are not fixed to heat absorbing plates and are not touching each other
  • F24S10/748—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits are not fixed to heat absorbing plates and are not touching each other the conduits being otherwise bent, e.g. zig-zag
• • 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
• • 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
  • F24S23/79—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with spaced and opposed interacting reflective surfaces
• • 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
  • F24S30/45—Arrangements for moving or orienting solar heat collector modules for rotary movement with two rotation axes
• • 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
  • F24S2020/23—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants movable or adjustable
• • 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
  • Y02E10/44—Heat exchange systems
• • 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

• the present invention is part of the solar energy sector, specifically in the field of solar radiation collector discs.
• Solar collector discs are reflective parabolic discs that concentrate solar radiation in a receiver that is located in the center of the parabola. In this center a motor can be placed that is in charge of producing the mechanical energy, transforming it into electrical energy.
• Concentrator discs known in the state of the art use as reflector continuous mirror surfaces with double curvature. With them, high energy densities have been achieved in the receptors. But there is a problem with these discs because the distribution on the receiving plane of the concentrated flow that is obtained with the parabolic mirror reflectors, because it is point-focused optics, is not homogeneous.
• the invention presented here solves the problems encountered in the state of the art due to the fact that they do not have a regulated and homogeneous distribution of the flow at their receiving surface, the constructive difficulty and the manufacturing costs of using curved mirrors and the high electrical consumption that they require to rotate on two axes and to remain oriented.
• the invention presented, object of this application, tries to solve the characteristic drawbacks of the existing collector discs described above.
• the first reflector of the solar radiation is multiple independent flat mirror surfaces, which intercept and divert the beam of rays towards the second unit specular reflector element, which sends the concentrated rays to the receiver getting, on a surface slightly larger than that of a single of the multiple mirror reflective surfaces, the distribution and / or superposition of all beams of intercepted and deflected rays.
• the focus movement of each small specular reflector is independent, thus being able to distribute the flow intensities over the final receiving plane.
• the structure on which these flat mirror surfaces are placed consists of a very light radial and lenticular circular structure on which concentric round tubular rings are mounted and fixed with an equal difference between their radii between them.
• each of the multiple mirror reflective surfaces is held by a double clip clamp.
• Each specular surface has a tube section attached that allows its anchoring in the clip of the corresponding clamp. With this mechanism, the movement of each specular surface is allowed independently in two different and orthogonal turns that allow the direction of the solar radiation beam intercepted by it towards the receiving plane to be manually deflected and fixed.
• the advantage of having all the energy collected in a fixed place on a receiving plane greatly favors the installation of reactors and energy conversion and evacuation systems.
• the fixed point in a collector with a two-axis solar tracker that is in continuous motion is that in which these axes intersect and coincide.
• balanced structures To place the receiver plane at the fixed point of the equipment, balanced structures have been designed with metal shafts that rotate on supports with bearings screwed to the structure that is firmly anchored to the ground.
• the assembly chosen for monitoring the collector is the equatorial
• Figure 1 is a plan view and a section of the lenticular radial structure -11- provided with circular tubular rings -16- concentrically mounted with the same difference between their radii.
• Figure 2 is an explanatory perspective drawing of the deviation suffered by the sunrays -14- on two of the flat mirror surfaces -12- independently oriented and that after a second reflection on the second unit specular reflector element -13- they finally reach the focal point determined for their location -18-.
• Figure 4 shows an explanatory perspective of the entire installation in a preferred embodiment.
• Figure 1 is a plan view and a section of the lenticular structure (11) provided with circular tubular rings (16) concentrically mounted with the same difference between their radii.
• Figure 2 is an explanatory perspective drawing of the deviation of the sunrays (14) on two of the multiple flat mirror surfaces (12) independently oriented and that after a second reflection on the second unit specular reflector (13) they finally reach the focal center of the final receiving surface of all concentrated solar radiation (18).
• the collector consists of a robust round swivel tube (1) with two extensions (2) aligned and collimated on the polar axis (6) that starting from a strong central solidarity ring (3) are supported by its ends in two supports with bearings (4).
• the separation and height of the two supports (5) is determined as required by the inclination of the polar axis (6) at the installation site.
• the central ring (3) diametrically opposed and welded externally along another axis (7) orthogonal with respect to the polar axis -6-, there are two short and tubular round extensions (8), centers of rotation of two opposite structural extensions (9) and (10) for the seasonal dependent orientation position of the two specular reflector reflector elements (12) and (13).
• the lenticular structure (11) is screwed with the multiple mirror reflectors (12) and the unitary specular reflector plane (13) is held in the opposite extension (10). facing the lenticular structure (11) to divert all radiation beams (14) from the first specular reflection to the center of the ring (3) of the round tubular rotating structure (1) where the location of the focal center of the final receiving surface of all concentrated solar radiation (18).
• the easy balancing is achieved on the centers of rotation of the mobile elements of the whole team.
• a photovoltaic plate (15) to obtain the electrical energy that is required for the total autonomy of the operation of the concentrator equipment.

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)
• Optical Elements Other Than Lenses (AREA)
• Photovoltaic Devices (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=49300041

Family Applications (1)

Country Status (2)

Citations (3)

• 2012
  • 2012-04-02 ES ES201200347A patent/ES2428042B1/es not_active Expired - Fee Related
• 2013
  • 2013-03-06 WO PCT/ES2013/000060 patent/WO2013150165A1/fr not_active Ceased

Patent Citations (3)

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