DE102006042713A1 - Optical system for focusing of solar radiation, has rotatably supported, metallized lamella wound around axis of rotation, where incident light is directed to layer from lamellae and falls on lens system or mirror system - Google Patents

Optical system for focusing of solar radiation, has rotatably supported, metallized lamella wound around axis of rotation, where incident light is directed to layer from lamellae and falls on lens system or mirror system Download PDF

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Publication number
DE102006042713A1
DE102006042713A1 DE102006042713A DE102006042713A DE102006042713A1 DE 102006042713 A1 DE102006042713 A1 DE 102006042713A1 DE 102006042713 A DE102006042713 A DE 102006042713A DE 102006042713 A DE102006042713 A DE 102006042713A DE 102006042713 A1 DE102006042713 A1 DE 102006042713A1
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optical system
mirror
lamellae
layer
directed
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SOLAR DYNAMICS GmbH
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SOLAR DYNAMICS GmbH
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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
    • F24S23/77—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
    • F24S23/00—Arrangements for concentrating solar-rays for 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
    • F24S23/30—Arrangements for concentrating solar-rays for solar heat collectors with lenses
    • 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
    • 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

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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)
  • Optical Elements Other Than Lenses (AREA)

Abstract

The optical system has a rotatably supported, metallized lamella with a thin mirror tinfoil and wound around an axis of rotation, where the incident light (1) is directed to a layer from lamellae (6) in such a manner that the incident light is transmitted in a plane perpendicular to a rotational axis of lamellas time independently under constant angle. The directed light falls on a firmly installed lens system (3) or mirror system. The breadth of the lamellae is adjustable in such a manner that a larger portion of the incident radiation is correspondingly directed.

Description

Die vorliegende Erfindung bezieht sich auf ein optisches System, bestehend aus einem oder zwei verspiegelten Lamellengittern, welches die einfallende solare Strahlung derart umlenkt, daß die Strahlung in mindestens einer Orientierungsrichtung vorwiegend senkrecht auf ein Linsensystem trifft, welches die einfallende Strahlung auf einen, sich in Strahlrichtung dahinter befindlichen, Absorber fokussiert.The The present invention relates to an optical system consisting from one or two mirrored lamellar lattices, which the incident Solar radiation deflected in such a way that the radiation in at least an orientation direction predominantly perpendicular to a lens system which hits the incident radiation on one, in the beam direction behind it, focused absorber.

Im Bereich konzentrierender Systeme in der Solartechnik kommen verschiedene Lösungen zum Einsatz, welche die einfallende solare Strahlung auf den Absorber fokussieren. Eingesetzt werden hier entweder Spiegel- oder Linsensysteme. Der jeweilige Absorber kann dabei unterschiedlich gestaltet sein. Je nach Anwendung kann der Absorber aus photovoltaischen Elementen, solarthermischen Elementen oder optischen Elementen zur Einkoppelung der konzentrierten Strahlung in ein Tageslichtlenkungssystem bestehen.in the There are various areas of concentrating systems in solar technology solutions to use the incident solar radiation on the absorber focus. Either mirror or lens systems are used here. The respective absorber can be designed differently. ever after application, the absorber can be made of photovoltaic elements, Solar thermal elements or optical elements for coupling consist of concentrated radiation in a daylight steering system.

Allen Systemen eigen ist, dass sie in mindestens einer Achse der Sonne nachgeführt werden müssen. Für Strahlungskonzentrationen bis etwa 100 genügt meist eine einachsige Nachführung der Systeme.all Systems own that they are in at least one axis of the sun tracked Need to become. For radiation concentrations to about 100 is enough usually a uniaxial tracking of the systems.

Darüberhinaus ist eine zweiachsige Nachführung notwendig.Furthermore is a biaxial tracking necessary.

Die hier beschriebene Erfindung stellt ein System zur ein- bzw. zweiachsigen Nachführung, bestehend aus verstellbaren Lamellengittern, zur Verfügung. Es dient dazu, die einfallende solare Strahlung derart zu richten, daß sie zumindest in einer Richtung unter konstantem Winkel auf ein feststehendes oder fest installiertes Linsensystem fällt, welches die Strahlung auf einen Absorber fokussiert.The The invention described herein provides a system for mono- or biaxial tracking, consisting of adjustable louvred gratings, available. It serves to direct the incident solar radiation in such a way that she at least in one direction at a constant angle to a fixed one or fixed lens system drops the radiation focused on an absorber.

Die Funktion des optischen Systems für eine einachsige Nachführung wird in 1 erläutert. Die einfallende solare Strahlung 1 fällt entsprechend der Tages- und Jahreszeit unter verschiedenen steilen Winkeln auf ein Lamellengitter 2. Die einzelnen Lamellen sind drehbar gelagert und verspiegelt. Der Drehwinkel wird so eingestellt, daß die einfallende solare Strahlung zeitunabhängig unter konstantem Winkel auf ein Linsensystem 3 trifft. Dieses Linsensystem kann zum Beispiel in Form einer zylindrischen Fresnellinse realisiert sein, welche die solare Strahlung auf einen Absorber 4 fokussiert. Die notwendige Breite 5 der Lamellen, um die gesamte einfallende Strahlung wie gewünscht zu richten, hängt vom Anstellwinkel der Lamellen und dem Abstand der Lamellen 6 ab. Um das optische System möglichst effizient zu gestalten, können die Lamellen derart ausgeführt werden, daß ihre Länge variabel ist und sich entsprechend ihrem Anstellwinkel ändert.The function of the optical system for a uniaxial tracking is in 1 explained. The incident solar radiation 1 Falls according to the time of day and season at different steep angles on a slatted lattice 2 , The individual slats are rotatably mounted and mirrored. The angle of rotation is adjusted so that the incident solar radiation is independent of time and at a constant angle to a lens system 3 meets. This lens system can be realized, for example, in the form of a cylindrical Fresnel lens which directs the solar radiation onto an absorber 4 focused. The necessary width 5 The slats to direct the total incident radiation as desired, depends on the angle of attack of the slats and the distance of the slats 6 from. To make the optical system as efficient as possible, the slats can be designed so that their length is variable and changes according to their angle of attack.

Im Faller einer zweiachsigen Nachführung werden 2 Lamellengitter hintereinander gesetzt; welche senkrecht zueinander orientiert sind. In diesem Falle kann auch ein zirkulares Linsensystem verwendet werden, wodurch Konzentrationen von bis zu 104 möglich sind.In the case of a biaxial tracking, 2 louvred gratings are placed one behind the other; which are oriented perpendicular to each other. In this case, a circular lens system can be used, whereby concentrations of up to 10 4 are possible.

11
einfallende Stahlungincident Stahlung
22
Lamellenslats
33
Linselens
44
Absorberabsorber
55
Breite de Lamellenwidth de lamellas
66
Abstand der Lamellendistance the slats

Claims (9)

Optisches System zur Lichtrichtung und Fokussierung solarer Strahlung dadurch gekennzeichnet, daß mindestens eine Lage aus drehbar gelagerten, verspiegelten Lamellen das einfallende Licht derart richtet, daß es in der Ebene senkrecht zur Drehachse der Lamellen zeitunabhängig unter konstantem Winkel weitergeleitet wird.Optical system for light direction and focusing of solar radiation, characterized in that at least one layer of rotatably mounted, mirrored lamellae directs the incident light such that it is forwarded in the plane perpendicular to the axis of rotation of the lamellae independent of time at a constant angle. Optisches System nach Anspruch (1) dadurch gekennzeichnet, daß das gerichtete Licht auf ein fest installiertes Linsensystem oder Spiegelsystem fällt, welches es dann in mindestens einer Richtung auf einen Absorber fokussiert.Optical system according to claim (1), characterized that this directed light on a fixed lens system or mirror system falls, which one it then focuses in at least one direction on an absorber. Optisches System zur Lichtrichtung und Fokussierung solarer Strahlung dadurch gekennzeichnet, daß mindestens eine Lage aus drehbar gelagerten Spiegellamellen das einfallende Licht richtet, wobei die Spiegellamellen so ausgerichtet sind, daß die projezierten Strahlengänge sich so überlagern, daß auch ohne zusätzliches Linsen- oder Spiegelsystem eine ortsfeste ein- und zweidimensionale Strahlungskonzentration erreicht wird.Optical system for light direction and focusing Solar radiation characterized in that at least one layer of rotatably mounted mirror fins directed the incident light, wherein the mirror fins are aligned so that the projected beam paths superimpose that too without additional Lens or mirror system a fixed one- and two-dimensional Radiation concentration is achieved. Optisches System nach Anspruch (1), (2), (3) dadurch gekennzeichnet, daß die Breite der Lamellen derart veränderlich ist, daß eine möglichst großer Anteil der einfallenden Strahlung entsprechend gerichtet wird.An optical system according to claim (1), (2), (3) thereby characterized in that Width of the slats so variable is that one preferably big part of the incident radiation is directed accordingly. Optisches System nach Anspruch (1), (2), (3), (4) dadurch gekennzeichnet, daß sich hinter der ersten Lage von Lamellen eine zweite Lage von Lamellen befindet, welche senkrecht zu der ersten Lage orientiert ist, so daß die einfallende Strahlung in beiden, senkrecht zueinander stehenden Richtungen derart umgelenkt wird, daß die Strahlung zeitunabhängig unter konstantem Winkel auf ein dahinter befindliches Linsensystem fällt.Optical system according to claim (1), (2), (3), (4) characterized in that behind the first layer of lamellae, a second layer of lamellae which is oriented perpendicular to the first layer, so that the incident radiation in both, perpendicular to each other Directions is redirected so that the radiation is independent of time constant angle to a lens system behind it. Optisches System nach Ansprüchen (1), (2), (3), (4), (5) dadurch gekennzeichnet, daß die in Funktion der Lamelleneinstellwinkel zu änderde Lamellenbreite durch ein mechanisches Koppelsystem realisiert wird, daß die Bewegung der Lamellendrehachse in geeigneter Form auf die aus übereinanderschiebbaren Spiegelstreifen bestehenden Lamellen überträgt.Optical system according to claims (1), (2), (3), (4), (5) characterized in that the in function of the lamella adjustment angle to changing lamella width a mechanical coupling system is realized that the movement the lamella rotation axis in a suitable form on the übereinanderschiebbaren Mirror strip transmits existing slats. Optisches System nach Ansprüchen (1), (2), (3), (4), (5) dadurch gekennzeichnet, daß die Lamellen aus dünner Spiegelfolie bestehen, die um eine Drehachse gewickelt sind und über geeignete Vorrichtungen in Funktion des Lamellenwinkels mehr oder weniger als Planspiegelstreifen ausgezogen werden.Optical system according to claims (1), (2), (3), (4), (5) characterized in that the Slats of thinner Mirror film are made, which are wound around a rotation axis and suitable Devices in function of the slat angle more or less be pulled out as plane mirror strip. Optisches System nach Ansprüchen (1), (2), (3), (4), (5), (6), (7) dadurch gekennzeichnet, daß die Lamellen aus einem dünnen Spezialglas oder Polymer bestehen der mittels thermochromer, photochromer oder elektrochromer Steuerung stufenlos in einen Spiegel verwandelt werden.Optical system according to claims (1), (2), (3), (4), (5), (6), (7) characterized in that the lamellae made of a thin special glass or polymer consist of the means of thermochromic, photochromic or electrochromic control are steplessly transformed into a mirror. Optisches System nach Ansprüchen (1), (2), (3), (4), (5) dadurch gekennzeichnet, daß die in Funktion des Sonnenstandes zu erfolgenden Lamellenverstellung über einen mit der Drehachse verbundenen und deren Rotationsbewegung steuernden nachgeführten Sonnensensor bewirkt wird.Optical system according to claims (1), (2), (3), (4), (5) characterized in that the in function of the position of the sun to be carried out lamellar adjustment over a associated with the axis of rotation and its rotational movement controlling tracking sensor is effected.
DE102006042713A 2006-09-12 2006-09-12 Optical system for focusing of solar radiation, has rotatably supported, metallized lamella wound around axis of rotation, where incident light is directed to layer from lamellae and falls on lens system or mirror system Withdrawn DE102006042713A1 (en)

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DE102006042713A DE102006042713A1 (en) 2006-09-12 2006-09-12 Optical system for focusing of solar radiation, has rotatably supported, metallized lamella wound around axis of rotation, where incident light is directed to layer from lamellae and falls on lens system or mirror system

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DE102006042713A DE102006042713A1 (en) 2006-09-12 2006-09-12 Optical system for focusing of solar radiation, has rotatably supported, metallized lamella wound around axis of rotation, where incident light is directed to layer from lamellae and falls on lens system or mirror system

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DE102006042713A1 true DE102006042713A1 (en) 2008-03-27

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4220137A (en) * 1978-09-18 1980-09-02 Tesch Allen R Solar energy collecting system
DE7932265U1 (en) * 1979-11-15 1982-07-08 Roth, Jürgen, Dipl.-Psych. Dr.med., 4400 Münster REFLECTOR FOR SOLAR ENERGY
US4377154A (en) * 1979-04-16 1983-03-22 Milton Meckler Prismatic tracking insolation
WO2004029521A1 (en) * 2002-09-25 2004-04-08 Georgi Lukov Gushlekov Optical concentrating system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4220137A (en) * 1978-09-18 1980-09-02 Tesch Allen R Solar energy collecting system
US4377154A (en) * 1979-04-16 1983-03-22 Milton Meckler Prismatic tracking insolation
DE7932265U1 (en) * 1979-11-15 1982-07-08 Roth, Jürgen, Dipl.-Psych. Dr.med., 4400 Münster REFLECTOR FOR SOLAR ENERGY
WO2004029521A1 (en) * 2002-09-25 2004-04-08 Georgi Lukov Gushlekov Optical concentrating system

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