WO2009156331A2 - Générateur d’énergie solaire - Google Patents

Générateur d’énergie solaire Download PDF

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Publication number
WO2009156331A2
WO2009156331A2 PCT/EP2009/057609 EP2009057609W WO2009156331A2 WO 2009156331 A2 WO2009156331 A2 WO 2009156331A2 EP 2009057609 W EP2009057609 W EP 2009057609W WO 2009156331 A2 WO2009156331 A2 WO 2009156331A2
Authority
WO
WIPO (PCT)
Prior art keywords
concave mirrors
collector
previous
generator according
series
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/EP2009/057609
Other languages
English (en)
Other versions
WO2009156331A3 (fr
Inventor
Reginald Ian Williams
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2009156331A2 publication Critical patent/WO2009156331A2/fr
Publication of WO2009156331A3 publication Critical patent/WO2009156331A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • 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
    • F24S2023/832—Other shapes curved
    • 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
    • F24S2023/87—Reflectors layout
    • F24S2023/878—Assemblies of spaced reflective elements in the form of grids, e.g. vertical or inclined reflective elements extending over heat absorbing 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
    • 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
    • F24S30/452—Vertical primary axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/80—Accommodating differential expansion of solar collector elements
    • F24S40/85—Arrangements for protecting solar collectors against adverse weather conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/50—Elements for transmitting incoming solar rays and preventing outgoing heat radiation; Transparent coverings
    • F24S80/56—Elements for transmitting incoming solar rays and preventing outgoing heat radiation; Transparent coverings characterised by means for preventing heat loss
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • 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

Definitions

  • the present invention relates to a solar energy generator, and in particular to a generator which can be used for producing thermal and/or electric energy.
  • WO 2005/116534 discloses a solar energy generator, which comprises a plurality of concave mirrors suitable for reflecting, in an ideal operative position in which they are perfectly oriented toward the sun, the solar rays toward a collector arranged between the source of the solar rays and the concave mirrors, so that most of the solar rays are reflected toward the collector with acute angles. If the generator is not in its ideal operative position, for example due to a malfunction of the sun aiming system, the solar rays can be reflected by the concave mirrors beyond the collector, with remarkable safety problems, especially when the generator is used in domestic or anyway uncontrolled environments.
  • the generator according to the present invention allows to prevent the reflection of the solar rays outside the generator, even if the latter is not in the ideal operative position, so as to increase its safety.
  • the particular arrangement of the concave mirrors also allows to reduce the wind drag of the generator.
  • the generator can further be provided with screens suitable for preventing the reflection of the solar rays toward other concave mirrors and/or behind the generator, so as to further improve its safety.
  • One of these screens preferably comprises a plurality of fins, so as to further decrease the wind drag of the generator.
  • figure 1 shows a perspective view of the generator
  • figure 2 shows a schematic side view of the generator of figure 1 in a first operative position
  • figure 3 shows a schematic side view of the generator of figure 1 in a second operative position.
  • the generator according to the present invention comprises in a known way a plurality of concave mirrors 1, 1 ' suitable for reflecting, in an operative position in which they are oriented toward the sun, solar rays
  • a first support structure for example comprising a crossbar 4 and a plurality of lateral panels 5, allows to rotate concave mirrors 1, 1 ' around a substantially horizontal axis so as to change their zenithal angle, while a second support structure, for example comprising a vertical upright 6, allows to rotate concave mirrors
  • concave mirrors 1 , 1 ' are arranged between the source of solar rays 2 and collector 3 so as to reflect in their ideal operative position most of solar rays 2 toward collector 3 with angles a comprised between 80° and 180°, in particular comprised between 90° and 170°.
  • the concavity of concave mirrors 1, 1 ' is turned toward reference axis R.
  • the concave mirrors are grouped in at least two opposing series 1 or 1 ' of mirrors, so that the concavity of one series is turned toward the other, and vice versa.
  • a first screen 7 is arranged between the two series of concave mirrors 1, 1 ' for preventing the reflection of solar rays 2 from one series of mirrors to the other, and vice versa.
  • First screen 7 is arranged along reference axis R and comprises at least one partition wall.
  • Crossbar 4 is crossed by reference axis R, is substantially perpendicular to the latter and crosses first screen 7.
  • a solar panel 8 is arranged along reference axis R on the opposite side with respect to collector 3, so that first screen 7 is arranged between solar panel 8 and collector 3.
  • Solar panel 8 comprises at least one photovoltaic cell and is substantially perpendicular to reference axis R.
  • a second screen 9 is arranged behind collector 3 for preventing the reflection of solar rays 2 beyond collector 3.
  • Second screen 9 comprises a plurality of fins substantially parallel to reference axis R.
  • Concave mirrors 1, 1 ' have a substantially rectangular shape and are bent for obtaining cylindrical sectors.
  • Two adjacent concave mirrors 1 or 1 ' of one series are arranged so as to be separated by a plane P substantially parallel to reference axis R, two rectilinear edges of two adjacent concave mirrors 1 or 1 ' of one series being this arranged on plane P.
  • a plane T passing on the outer rectilinear edges, namely the ones more distant from collector 3, of two adjacent concave mirrors 1 or 1 ' of one series coincides substantially with the plane perpendicular to the tangent (t) of the curvature by the outer edge of the most distant concave mirror 1 or 1 ' from reference axis R, so that solar rays 2 are reflected by concave mirrors 1, 1 ' toward reference axis R.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Saccharide Compounds (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

La présente invention concerne un générateur d’énergie solaire comportant une pluralité de miroirs concaves (1, 1’) apte à réfléchir, dans une position opérationnelle dans laquelle ils sont orientés vers le soleil, les rayons du soleil (2) vers un collecteur (3). Dans une position opérationnelle idéale, les rayons du soleil (2), avant d’être réfléchis par les miroirs concaves (1, 1’), sont parallèles à un axe de référence (R) traversant le collecteur (3), et dans cette position opérationnelle idéale les miroirs concaves (1, 1’) sont disposés entre la source des rayons du soleil (2) et le collecteur (3) afin de réfléchir un maximum de rayons solaires (2) vers le collecteur (3) avec des angles (a) compris entre 80° et 180°.
PCT/EP2009/057609 2008-06-27 2009-06-18 Générateur d’énergie solaire Ceased WO2009156331A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2008A001172 2008-06-27
IT001172A ITMI20081172A1 (it) 2008-06-27 2008-06-27 Generatore ad energia solare

Publications (2)

Publication Number Publication Date
WO2009156331A2 true WO2009156331A2 (fr) 2009-12-30
WO2009156331A3 WO2009156331A3 (fr) 2010-06-24

Family

ID=40301872

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/057609 Ceased WO2009156331A2 (fr) 2008-06-27 2009-06-18 Générateur d’énergie solaire

Country Status (2)

Country Link
IT (1) ITMI20081172A1 (fr)
WO (1) WO2009156331A2 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2791214A (en) * 1953-03-18 1957-05-07 Poliansky Alejandro Apparatus for utilization of solar heat
DE2709508A1 (de) * 1977-03-04 1978-09-07 Sergiu Dipl Ing Caftanat Sonnenelektrogeneratoranlage
US4238246A (en) * 1979-06-04 1980-12-09 North American Utility Construction Corp. Solar energy system with composite concentrating lenses
US4347834A (en) * 1980-11-28 1982-09-07 York Bernard H Variable entropy solar energy harvester
FR2518718A1 (fr) * 1981-12-23 1983-06-24 Djelalian Madeleine Procede pour capter et exploiter au maximum le rayonnement solaire global, dispositifs pour la mise en oeuvre de ce procede et capteurs solaires en resultant
SU1023270A1 (ru) * 1982-01-28 1983-06-15 Vasilev Viktor P Концентратор лучистой энергии "Пересвет" и способ его изготовлени
US4883340A (en) * 1988-08-02 1989-11-28 Solar Lighting Research, Inc. Solar lighting reflector apparatus having slatted mirrors and improved tracker
US6620995B2 (en) * 2001-03-30 2003-09-16 Sergiy Victorovich Vasylyev Non-imaging system for radiant energy flux transformation
US20020174671A1 (en) * 2001-05-22 2002-11-28 Ken Wilkinson Solar radiation screen for air conditioner condenser
US20030137754A1 (en) * 2001-12-17 2003-07-24 Vasylyev Sergiy Victorovich Multistage system for radiant energy flux transformation

Also Published As

Publication number Publication date
ITMI20081172A1 (it) 2009-12-28
WO2009156331A3 (fr) 2010-06-24

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