DE19849688A1 - Device for increasing degree of effect of solar collector uses first completely flowed-through absorber in sandwich format with parallel back plate arranged beneath absorber plate - Google Patents

Device for increasing degree of effect of solar collector uses first completely flowed-through absorber in sandwich format with parallel back plate arranged beneath absorber plate

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Publication number
DE19849688A1
DE19849688A1 DE1998149688 DE19849688A DE19849688A1 DE 19849688 A1 DE19849688 A1 DE 19849688A1 DE 1998149688 DE1998149688 DE 1998149688 DE 19849688 A DE19849688 A DE 19849688A DE 19849688 A1 DE19849688 A1 DE 19849688A1
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DE
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Application
Patent type
Prior art keywords
absorber
plate
back plate
effect
device
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
DE1998149688
Other languages
German (de)
Inventor
Mario Gunther Leschik
Original Assignee
Mario Gunther Leschik
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

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/50Solar heat collectors using working fluids the working fluids being conveyed between plates
    • F24S10/503Solar heat collectors using working fluids the working fluids being conveyed between plates having conduits formed by paired plates, only one of which is plane
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/25Solar heat collectors using working fluids having two or more passages for the same working fluid layered in direction of solar-rays, e.g. having upper circulation channels connected with lower circulation channels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/50Solar heat collectors using working fluids the working fluids being conveyed between plates
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy
    • Y02E10/44Heat exchange systems

Abstract

A primary completely flowed-through absorber in sandwich format is used to increase the degree of effect of a solar collector and beneath the absorber plate (1) is a parallel back plate (5). The hollow space between the absorber plate and the back plate can be completely flowed through over its total volume by a heat transport medium. Between the absorber plate and the back plate is a plate (3) in zigzag of corrugated format, which with the amplitudes of its profile contacts the absorber plate at the top and the back plate at the bottom. Alternatively, the plate is flat. Beneath the back plate at a short distance from it is a reflection mirror (6).

Description

Bezeichnung der Erfindung Title of invention

Vorrichtung zur Erhöhung des Wirkungsgrades von Sonnenkollektoren durch Verwendung eines Solarabsorbers in Sandwichausführung, bestehend aus drei verschiedenen profilierten Platten, durch deren Zwischenräume zwei entgegensetzt fließende Mediumströme geführt werden, und aus einem Reflexionsspiegel. An apparatus for increasing the efficiency of solar panels by use of a solar absorber in sandwich construction, composed of three different profiled plates through the spaces between two opposes are conducted flowing medium flows, and from a reflection mirror.

Solaranlagen arbeiten nach dem Prinzip der Photovoltaik bzw. Thermik. Solar systems work on the principle of photovoltaic or thermal. Gegenstand dieser Erfindung sind die thermischen Solaranlagen. This invention relates to the solar thermal systems.

Die Absorber von thermischen Solaranlagen bestehen aus einer zur Aufnahme der Sonnenenergie selektiv beschichteten Absorberplatte, die die Sonnenenergie in Wärme umwandelt, aus einem unter der Platte entlanggeführten Wärmetransport medium und aus einer unterschiedlich ausgeführten Wärmeisolierung. The absorber of solar thermal systems consist of a selectively coated to receive the solar energy absorber plate which converts the solar energy into heat, of a guided along underneath the plate heat transport medium and out of a differently designed thermal insulation.

Verschiedene technische Ausführungen eines Absorbers unterscheiden sich neben der Art der Beschichtung und Isolierung besonders durch die Art und Weise, in der das Wärmetransportmedium durch den Absorber geführt wird. Various technical versions of an absorber differ not only the type of coating and insulation especially by the manner in which the heat transport medium through the absorber. Abhängig von der Qualität und Quantität des Kontakts zwischen Absorberplatte und Wärmetransport medium treten hier nennenswerte Energieverluste durch Abstrahlung auf. Depending medium of the quality and quantity of contact between absorber plate and heat transport significant loss of energy by radiation occur here. Diese Energieverluste fallen hauptsächlich deshalb an, weil die Kontaktfläche, die für die direkte Wärmeübertragung zur Verfügung steht, durch die jeweilige bauliche Ausführung limitiert ist. This energy loss is incurred primarily because the contact area, which is the direct transfer of heat available is limited by the particular structural design.

Da der Wirkungsgrad einer Solaranlage entscheidend vom Umfang der auftretenden Energieverluste bestimmt wird und der Absorber in dieser Hinsicht eine Schwachstelle der gesamten Solaranlage darstellt, konzentriert sich die neue Vorrichtung auf die Optimierung seiner baulichen Ausführung. Since the efficiency of a solar system is decisively determined by the level of energy losses occurring and the absorber in this regard represents a weak point of the entire solar system, the new device is focused on improving its structural design. Beim derzeitigen Stand der Technik (galvanisch aufgebrachte Selektivbeschichtung) sind die Energieverluste durch Reflexion am Absorberblech bereits auf weniger als 15% reduziert. In the current state of the art (electroplated selective coating) have already been reduced to less than 15%, the energy losses due to reflection at the absorber plate. Weitere Energieverluste an den Seiten des Absorberrahmens und an der unteren Absorberseite verringern jedoch immer noch in erheblichem Maße den Gesamtwirkungsgrad jeder Solaranlage. reduce further energy losses on the sides of the absorber frame and the lower absorber side but still to a large extent the overall efficiency of every solar power system. Letztere sind der Gegenstand der hier dargelegten Optimierung. The latter are the subject of optimization set forth herein.

Die Neuheit der Vorrichtung besteht darin, daß dem Wärmetransportmedium das gesamte zwischen zwei Platten befindliche Hohlraumvolumen für die Durchströmung zur Verfügung gestellt wird. The novelty of the device is that the thermal transport medium, the entire void volume located between two plates is provided for the flow available.

Um Turbulenzen bei der Durchströmung zu vermeiden und den Kontakt des aufgeheizten Wärmetransportmediums mit der unteren Rückenplatte wegen der hier auftretenden Energieverluste zu minimieren, befindet sich zwischen den zwei Platten eine weitere profilierte oder ebene Platte. In order to avoid turbulence in the flow and to minimize contact of the heated heat transfer medium to the lower back plate, because of the occurring here energy loss is located between the two plates a further profiled or flat plate. Diese trennt das Wärmemedium in einen oberen und einen unteren Strom, welche in entgegengesetzter Richtung aneinander vorbei fließen, getrennt durch das Profil der Zwischenplatte. This separates the heat medium into an upper and a lower current which flow in the opposite direction to each other by, separated by the profile of the intermediate plate.

Der untere Wärmestrom ist dabei immer der vom Wärmeaustauscher zurück kehrende, abgekühlte Teil. The lower heat flow is always the returning, cooled by the heat exchanger portion.

Durch gezielte Profilierung der Zwischenplatte im Zickzack- bzw. Wellensystem (aber auch in der ebenen Ausführung) hat die Rückenplatte über ihre gesamte Fläche ausschließlich direkten Kontakt mit diesem kühleren Teil des Wärmestroms, an der Absorberrückenplatte treten daher nur noch geringfügige Strahlungsverluste auf. Through targeted profiling of the intermediate plate in a zigzag or wave system (but also in the flat version) has the backing plate over its entire surface only direct contact with the cooler part of the heat flow, so only minor radiation losses occur at the absorber back plate.

An der tiefsten Stelle des Kollektors wird der untere dann in den oberen Wärmestrom umgeleitet. the lower is then redirected to the top heat flow at the lowest point of the collector. Dieser benetzt vollständig die Unterseite der Absorberplatte und hat gleichzeitig über die Fläche des Profils direkten Kontakt zum unteren Mediumstrom der dadurch leicht vorgewärmt wird. This completely wets the underside of the absorber plate and having direct contact with the lower medium flow which is thereby slightly pre-heated at the same time over the surface of the profile.

Die Absorberrückentemperatur bleibt relativ niedrig, nur wenig Energieverluste treten auf. The absorber back temperature remains relatively low, only little energy losses occur. Damit sinken die Ansprüche an die Effektivität der unteren Absorberisolierung in Bezug auf Mächtigkeit und Materialeigenschaften ganz entschieden gegenüber den Ansprüchen an herkömmliche Absorber. Thus, the demands on the effectiveness of the lower absorber insulation in terms of thickness and material properties to fall decidedly to the claims of conventional absorber.

Durch Verwendung eines Reflexionsspiegels in geringer Entfernung unterhalb der Rückenplatte erübrigt sich bei der neuen Vorrichtung jegliche Isolierung mit Mineralwolle u. By using a reflection mirror at a short distance below the back plate any insulation with mineral wool is unnecessary and in the new device. ä. ä.

Der Vorteil der neuen Vorrichtung ergibt sich aus der optimalen Nutzung der Sonnenenergie (erhöhte Wärmeaufnahme), aus der Einsparung von Isolier materialien und daraus resultierender längerer Lebensdauer des Kollektors sowie aus verbesserten Recyclingmöglichkeiten, da herkömmliche Isolierungen häufig noch ökologisch problematische Materialien enthalten. The advantage of the new device is given by the optimum use of solar energy (increased heat absorption), from the savings of insulating materials and the resulting longer service life of the collector as well as improved recycling possibilities, since conventional insulations often contain environmentally problematic materials.

Genannt werden soll weiterhin die Reduzierung der Kollektormächtigkeit, die durch das Wegfallen der Isolierschicht mehr als 50% betragen kann. shall be called further reducing the collector thickness which may be, by eliminating the insulating layer more than 50%.

Durch die Verbesserung des Wirkungsgrades entwickeln sich die technischen Ausmaße der Solaranlagen sehr zugunsten der Verbraucher. By improving the efficiency of the technical dimensions of the solar systems very in favor of consumers develop.

Claims (6)

1. Vorrichtung zur Erhöhung des Wirkungsgrades von Sonnenkollektoren durch Verwendung eines Solarabsorbers in Sandwichausführung, des ersten vollständig durchströmten Absorbers, der dadurch gekennzeichnet ist, daß unterhalb der Absorberplatte ( 1 ) eine Rückenplatte ( 5 ) parallel angeordnet wird. 1. A device for increasing the efficiency of solar panels that by using a back plate (5) is arranged parallel underneath the absorber plate (1) a solar absorber in sandwich construction, the first full-flow absorber which is characterized in.
2. Daß der dabei zwischen Absorberplatte und Rückenplatte entstehende Hohlraum über sein gesamtes Volumen vollständig von einem Wärmetransportmedium durchströmt werden kann. 2. The fact that the resulting between the absorber plate and the back plate cavity over its entire volume can be completely flowed through by a heat transporting medium.
3. Daß sich zwischen der Absorber- und der Rückenplatte eine im Zickzack- bzw. Wellensystem profilierte Platte ( 3 ), die mit den Amplituden ihres Profils oben die Absorber- bzw. unten die Rückenplatte berührt, oder eine eben ausgeführte Platte befindet 3. The fact that a profiled in the zigzag or wave system plate (3), the top, bottom contacts with the amplitudes of their profile, the absorber or the back plate, or a flat plate is carried out between the absorber and the back plate
4. Daß diese profilierte Zwischenplatte ( 3 ) das Wärmetransportmedium in zwei entgegengesetzt fließende Ströme trennt, in den unteren ( 4 ) und in den oberen ( 2 ) Mediumstrom. 4. The fact that this profiled intermediate plate (3) opposed to the heat transport medium in two separate currents flowing into the lower (4) and to the top (2) the medium flow.
5. Daß durch die besondere Konstruktion dieser Zwischenplatte an der tiefsten Stelle des Kollektors der untere Mediumstrom ( 4 ) in den oberen Mediumstrom ( 2 ) umgeleitet wird und 5. The fact that by the special construction of these intermediate plate at the lowest point of the collector of the lower medium stream (4) is diverted to the top medium flow (2) and
6. Daß die Rückenplatte mit geringem Abstand von einem Reflexionsspiegel ( 6 ) unterlagert wird. 6. The fact that the back plate is underlain with a small distance from a reflection mirror (6).
DE1998149688 1998-10-28 1998-10-28 Device for increasing degree of effect of solar collector uses first completely flowed-through absorber in sandwich format with parallel back plate arranged beneath absorber plate Ceased DE19849688A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1998149688 DE19849688A1 (en) 1998-10-28 1998-10-28 Device for increasing degree of effect of solar collector uses first completely flowed-through absorber in sandwich format with parallel back plate arranged beneath absorber plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1998149688 DE19849688A1 (en) 1998-10-28 1998-10-28 Device for increasing degree of effect of solar collector uses first completely flowed-through absorber in sandwich format with parallel back plate arranged beneath absorber plate

Publications (1)

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DE19849688A1 true true DE19849688A1 (en) 2000-05-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1451507A2 (en) * 2001-10-01 2004-09-01 Futura Solar, Inc. Structurally integrated solar collector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1451507A2 (en) * 2001-10-01 2004-09-01 Futura Solar, Inc. Structurally integrated solar collector
EP1451507A4 (en) * 2001-10-01 2006-08-02 Futura Solar Inc Structurally integrated solar collector

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