EP2210275A2 - Collecteur solaire - Google Patents

Collecteur solaire

Info

Publication number
EP2210275A2
EP2210275A2 EP08847472A EP08847472A EP2210275A2 EP 2210275 A2 EP2210275 A2 EP 2210275A2 EP 08847472 A EP08847472 A EP 08847472A EP 08847472 A EP08847472 A EP 08847472A EP 2210275 A2 EP2210275 A2 EP 2210275A2
Authority
EP
European Patent Office
Prior art keywords
solar collector
collector according
absorbing surface
solar
sunlight
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.)
Withdrawn
Application number
EP08847472A
Other languages
German (de)
English (en)
Inventor
Robert Massen
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.)
Massen GmbH
Original Assignee
Massen GmbH
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 Massen GmbH filed Critical Massen GmbH
Publication of EP2210275A2 publication Critical patent/EP2210275A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/0216—Coatings
    • H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/02167—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • H01L31/02168—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells the coatings being antireflective or having enhancing optical properties for the solar cells
    • 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
    • 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
    • F24S50/80—Arrangements for controlling solar heat collectors for controlling collection or absorption of solar radiation
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • 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
    • F24S2020/10—Solar modules layout; Modular arrangements
    • F24S2020/17—Arrangements of solar thermal modules combined with solar 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
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S2023/86—Arrangements for concentrating solar-rays for solar heat collectors with reflectors in the form of reflective coatings
    • 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
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49355—Solar energy device making

Definitions

  • FIG. 1 shows, by way of example, in a photograph reduced to a pure line drawing for printing reasons, a roof of a private house 10 covered with roof tiles, which is provided both with a thermal solar collector 12 and with a photovoltaic solar panel.
  • Solar collector 14 is occupied.
  • the dark area-like interruption of both the color and the structure of the tiles is visually very disturbing and structurally not tolerable from an architectural point of view.
  • WO 2006/010261 A1 describes a periodic arrangement of smaller photovoltaic cells, which by their size and arrangement at least the periodic arrangement of roof tiles in certain
  • a color adaptation to the roof is provided here by a color-coded anti-reflection layer, but which can produce no spatial impression. Such coloring is also associated with a large reduction in absorbed light.
  • a small percentage of reflected light is sufficient to simulate a two-dimensional surface or a three-dimensional spatial form, or to create a content-imparting visual impression because the reflection is selective.
  • a simulated area can be, for example, a façade wall with a certain color, which is also patterned in itself, or also edge margins of slate slabs.
  • a simulated three-dimensional spatial form could be a replica of the tiles surrounding the solar panel.
  • a visual image that conveys contents can e.g. convey an advertising message.
  • the absorbing surface reflects spectrally selective.
  • incident sunlight is selected only in a narrow band selected wavelength range or in narrow band Wavelength ranges reflected, for example, have only a width of about 5 to 15 nm.
  • the reflected wavelength bands are in the range of the highest perception of the human eye.
  • the eye has three perceptual maxima.
  • the maxima of these reflection bands will be in the values specified for the CIE standard observer:
  • reflection may be placed between the maxima for green and red, where the perception of both the green and the red cones is high.
  • Coatings are for example from the company Red Optronics Company
  • the spectral narrow-band reflection can be wholly or partly supported or formed by a fluorescence effective in the desired wavelength bands.
  • a fluorescence effective in the desired wavelength bands in particular, in the case of black thermal collectors, which can not exploit the UV component of sunlight, it is possible by means of targeted fluorescence to utilize this unused energy of the spectrum in a visible reflection which can be used for aesthetic design.
  • the absorbent surface reflects directionally selective.
  • incident sunlight is substantially not reflected in a first solid angle range and reflected only in a second solid angle range which is smaller than the first solid angle range and substantially corresponds to the solid angle range, under which the solar collector is seen in the operational state mainly by human observers.
  • nanostructures can also be used with classic printing techniques such as
  • Nanoparticles align themselves from an evaporating carrier liquid in a self-organized process on the substrate so that the resulting
  • Layer shows a certain angle of reflection for incident sunlight.
  • the absorbent surface reflects area-selectively.
  • the reflective surfaces may, for example, the edges of
  • the reflective surfaces necessary for the desired optical impression are interrupted so that a human observer does not perceive any interruption. That's depending on the angle under which the solar collector is seen, more or less possible. A person unconsciously supplements surfaces and structures that are interrupted. Thus, the energy removed from the radiation can be reduced, so the efficiency increases.
  • the interruption of the reflective surface, which is not perceived by humans, reflects an even smaller fraction of the sunlight.
  • the visual impression is adapted to the surface surrounding the solar collector after installation, ie in the ready state.
  • the absorbing solar collector surface can also be used for artworks or billboards - always with very little efficiency limitation, since only a small percentage of the incident light is reflected.
  • the changed reflection properties are preferably achieved by
  • the printing, coating or texturing can take place, for example, on a glass plate provided for the protection of the solar collector. It is also possible to provide a printed film which is applied to the absorbing surface of the solar collector.
  • optical properties can also be controlled electrically.
  • electrochromic glasses by applying a voltage, the transparency or the diffuse backscatter of light can be controlled. If such glasses combined with the layers described above with spectrally selective behavior or with a direction-selective reflection, the desired effects can be electrically controlled in addition. This is interesting, for example, for the design of solar collectors for advertising purposes
  • the invention further provides a method of manufacturing solar panels.
  • the idea of the invention is explained by way of example with reference to the design of a photovoltaic roof panel made of solar cells, which is mounted on a tile covered with roof tiles.
  • Figure 1 shows the disturbing visual impression of photovoltaic and thermal solar collectors in the prior art, which break the architectural-seeming structure and color of a roof tile-covered roof by a continuous dark area;
  • FIG. 2 shows the spectral sensitivity curves of the human eye
  • FIG. 3 shows the solid angle of the required reflection of a printed graphic pattern of simulated roof tiles on a photovoltaic roof panel to be viewed by an observer from the street;
  • FIG. 4 illustrates the exploitation of the principle of the human visual
  • the architectural design of solar collectors can be attributed to the following task: the solar collector should be designed by suitable surface processes visually corresponding to the undisturbed roof tile pattern, which expedient for cost reasons with a simple printing process at the end of the manufacturing process of the entire solar collector carried out and may affect the energy efficiency only slightly.
  • a digital printing process such as ink jet printing is suitable.
  • Other pattern-generating processes such as surface texturing, interference coating, nanoscale wavelength-dependent reflections, etc., are known to those skilled in the surface art.
  • we present the idea of the invention primarily on the basis of a printing process; However, the other known surface design processes such as coating, structuring, etc. are part of the inventive concept.
  • this is done in a first embodiment by applying surface properties which reflect the incident sunlight only in a narrow band selected wavelength range or in narrow band selected wavelength ranges.
  • FIG. 2 shows in a graph 16 the relative spectral sensitivity of the color receptors of the human retina over the wavelength.
  • the human eye has as color receptors three different types of cones for the primary colors BLUE, GREEN and RED. Their respective sensitivity is shown in the graph of FIG.
  • a line 18 shows the sensitivity of a blue pin, a line 20 the sensitivity of a green pin and a line 22 the sensitivity of a red pin.
  • the sensitivity curves correspond to spectral bandpasses in the range of wavelengths from about 400 nm to 650 nm, these bandpasses overlapping strongly, especially in GREEN and RED. With a curve 24, the energetically effective absorption of sunlight in this spectral range is indicated.
  • the knowledge of the sensitivity curves 18, 20 and 22 leads to a specific selection of the pigments selected for the colored, areal printing of the surface of the solar collectors.
  • very narrow-band reflective pigments are used, which reflect near the maximum of the sensitivity of the blue pin of 435.6 nm, so for example between about 430-445 nm.
  • For a green impression are very narrow-band reflective Using pigments that reflect near the maximum sensitivity of the green pin at 546, 1 nm, for example, between about 540 to 555 nm.
  • very narrow-band reflective pigments are used, which are close to the maximum reflect the sensitivity of the red pin at 600 nm, so for example from about 590 to 605 nm.
  • any color impression and thus any impression of a three-dimensional spatial form can be caused in the human observer, although compared to traditional broadband pigments only small energy losses occur.
  • the radiation loss by reflection can thus be kept very small, or in other words, the energy gain (1 / loss) is significant compared to the use of classical broadband CMYK pigments (CMYK cyan, magenta, yellow, key).
  • the desired visual color impression is achieved with the lowest possible radiation losses by applying surface properties which reflect the incident sunlight in a directionally selective manner.
  • the sunlight is reflected only in the restricted solid angle (s) from which the solar collector mounted on the roof can usually be observed by humans.
  • 3 shows a building 32 with a sloping roof 34, on which a solar collector 36 is mounted. This is illuminated by the large-radiating sun 38 substantially in parallel.
  • the angle valid for the optical perception is reduced to a very small solid angle ⁇ , which is only a fraction of the usual diffuse reflection angle of a surface 44 of the solar collector 36 of approx. 180 degrees.
  • the surface is designed by a printing process (in the sense of the above-mentioned generalization of the term "printing process") so that incident sunlight is reflected only in the narrow solid angle from which the human observer 42 can see the solar collector 36. Upwards or into others lateral directions, no light is reflected, thereby roughly reducing the energy efficiency by a fraction of
  • ⁇ 10 degrees this is a factor of 1/18, ie a small loss.
  • FIG. 4 shows, for the third embodiment, an exemplary printing of the solar radiation-exposed surface of a solar collector, which of course can also be combined with the two embodiments already described.
  • the perception property of the human visual system is used to perceive interrupted graphic structures in the perception as uninterrupted. It is therefore printed by a printing process, a pattern 46 of a Dachziegeldaches as a graphic pattern with a reflective layer.
  • the line-like structures 48 are interrupted again and again at locations 50, so that the total reflecting area is reduced according to the line-to-line ratio, without the human visual system being significantly disturbed in recognizing a roof tile roof.
  • lines running into the vanishing point can be interrupted frequently and over substantial lengths without the impression of a closed roof tile pattern being lost.
  • the energy efficiency increases compared to a pattern traditionally printed with uninterrupted lines pattern, approximately corresponding to the ratio line distance / interruption distance.
  • the Erf ⁇ ndungsgedanke concerns both photovoltaic and thermal solar collectors and includes all processes for architectural, graphic or color design of the absorbent surface of these solar collectors. It does not only include the energetically optimized design in the sense of an optical reconstruction of the solar collectors, e.g. are designed as solar panels, concealed building structures such as roof tiles, facade elements or outdoors set up, the terrain hiding solar panels.
  • the term "architectural design" in the sense of the inventive idea also includes the free artistic design and patterning through artistic motives but also through motifs in the sense of an advertising space or a message.
  • the concept of the invention relates to solar collectors and all production methods for the production of optically appealing photovoltaic and thermal solar collectors such that the energy efficiency is only slightly reduced compared to a non-patterned solar collector, which is achieved by individual or combined utilization of the effects: Reflection essentially only in the limited solid angle from which the solar collector is seen b) graphic design by linear structures, which are so interrupted that they do not disturb the human perception as a whole pattern c) colored flat design by pigments with narrow
  • Wavelength ranges in which a reflection takes place which lie in the range of the human perceptible wavelengths.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Photovoltaic Devices (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Finishing Walls (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

Collecteur solaire dont la surface d'absorption ne reflète qu'une infime fraction de la lumière solaire et, par des prorpiétés de réflexion sélectives, simule une surface bidimensionnelle ou un espace tridimensionnel ou bien crée une impression visuelle de support d'information.
EP08847472A 2007-11-11 2008-11-07 Collecteur solaire Withdrawn EP2210275A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007054124A DE102007054124A1 (de) 2007-11-11 2007-11-11 Architektonisch gestaltete Solarzellen- und Solarthermie-Paneele
PCT/EP2008/009418 WO2009059785A2 (fr) 2007-11-11 2008-11-07 Collecteur solaire

Publications (1)

Publication Number Publication Date
EP2210275A2 true EP2210275A2 (fr) 2010-07-28

Family

ID=40530680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08847472A Withdrawn EP2210275A2 (fr) 2007-11-11 2008-11-07 Collecteur solaire

Country Status (4)

Country Link
US (1) US20100282241A1 (fr)
EP (1) EP2210275A2 (fr)
DE (1) DE102007054124A1 (fr)
WO (1) WO2009059785A2 (fr)

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Also Published As

Publication number Publication date
WO2009059785A2 (fr) 2009-05-14
US20100282241A1 (en) 2010-11-11
WO2009059785A3 (fr) 2009-07-16
DE102007054124A1 (de) 2009-05-14

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