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 DE19849688A DE19849688A DE19849688A1 DE 19849688 A1 DE19849688 A1 DE 19849688A1 DE 19849688 A DE19849688 A DE 19849688A DE 19849688 A DE19849688 A DE 19849688A DE 19849688 A1 DE19849688 A1 DE 19849688A1
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DE
Germany
Prior art keywords
plate
absorber
beneath
parallel
effect
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
DE19849688A
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
Application filed by Mario Gunther Leschik filed Critical Mario Gunther Leschik
Priority to DE19849688A priority Critical patent/DE19849688A1/en
Publication of DE19849688A1 publication Critical patent/DE19849688A1/en
Ceased legal-status Critical Current

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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, e.g. solar towers
    • 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 ErfindungName of the 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.Device for increasing the efficiency of solar panels Use of a solar absorber in sandwich design, consisting of three different profiled plates, with two spaces in between flowing medium streams are guided, and from a reflection mirror.

Solaranlagen arbeiten nach dem Prinzip der Photovoltaik bzw. Thermik. Gegenstand dieser Erfindung sind die thermischen Solaranlagen.Solar systems work on the principle of photovoltaics or thermals. object of this invention are the thermal solar 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 absorbers of thermal solar systems consist of one for receiving the Solar energy selectively coated absorber plate, which the solar energy in Converted heat from a heat transfer along the plate medium and made of different types of 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. Abhängig von der Qualität und Quantität des Kontakts zwischen Absorberplatte und Wärmetransport­ medium treten hier nennenswerte Energieverluste durch Abstrahlung auf. Diese Energieverluste fallen hauptsächlich deshalb an, weil die Kontaktfläche, die für die direkte Wärmeübertragung zur Verfügung steht, durch die jeweilige bauliche Ausführung limitiert ist.Different technical designs of an absorber also differ the type of coating and insulation, particularly the way in which the heat transfer medium is passed through the absorber. Depends on the Quality and quantity of contact between absorber plate and heat transfer medium there are significant energy losses due to radiation. This The main reason for energy losses is because the contact area required for the direct heat transfer is available through the respective structural Execution is limited.

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. Beim derzeitigen Stand der Technik (galvanisch aufgebrachte Selektivbeschichtung) sind die Energieverluste durch Reflexion am Absorberblech bereits auf weniger als 15% reduziert. Weitere Energieverluste an den Seiten des Absorberrahmens und an der unteren Absorberseite verringern jedoch immer noch in erheblichem Maße den Gesamtwirkungsgrad jeder Solaranlage. Letztere sind der Gegenstand der hier dargelegten Optimierung.Because the efficiency of a solar system depends crucially on the extent of the Energy loss is determined and the absorber in this regard Represents the weak point of the entire solar system, the new is concentrated Device to optimize its construction. At the current State of the art (electroplated selective coating) Energy losses due to reflection on the absorber sheet already less than 15% reduced. Further energy losses on the sides of the absorber frame and on the lower absorber side, however, still reduce the  Overall efficiency of every solar system. The latter are the subject of here optimization outlined.

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 heat transfer medium total void volume between two plates for the flow is made 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. Diese trennt das Wärmemedium in einen oberen und einen unteren Strom, welche in entgegengesetzter Richtung aneinander vorbei fließen, getrennt durch das Profil der Zwischenplatte.In order to avoid turbulence in the flow and the contact of the heated heat transfer medium with the lower back plate because of the here To minimize energy losses that occur is between the two plates another profiled or flat plate. This separates the heat medium into one upper and a lower current, which face each other in opposite directions flow past, 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 that of the heat exchanger back sweeping, cooled part.

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 even in the flat version) the back plate has over its entire surface only direct contact with this cooler part of the heat flow at which The absorber back plate therefore only has slight radiation losses.

An der tiefsten Stelle des Kollektors wird der untere dann in den oberen Wärmestrom umgeleitet. 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.At the lowest point of the collector, the lower one then flows into the upper heat flow redirected. This completely wets the underside of the absorber plate and has at the same time direct contact to the lower medium flow over the surface of the profile which is slightly preheated.

Die Absorberrückentemperatur bleibt relativ niedrig, nur wenig Energieverluste treten auf. Damit sinken die Ansprüche an die Effektivität der unteren Absorberisolierung in Bezug auf Mächtigkeit und Materialeigenschaften ganz entschieden gegenüber den Ansprüchen an herkömmliche Absorber.The absorber back temperature remains relatively low, with little energy loss on. This lowers the demands on the effectiveness of the lower absorber insulation In terms of thickness and material properties, it was decidedly different from the Demands on conventional absorbers.

Durch Verwendung eines Reflexionsspiegels in geringer Entfernung unterhalb der Rückenplatte erübrigt sich bei der neuen Vorrichtung jegliche Isolierung mit Mineralwolle u. ä.By using a reflection mirror a short distance below the Back plate is no longer necessary with the new device Mineral wool u. 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 results from the optimal use of the Solar energy (increased heat absorption), from the saving of insulation  materials and the resulting longer service life of the collector as well from improved recycling options, since conventional insulation is often still contain ecologically problematic materials.

Genannt werden soll weiterhin die Reduzierung der Kollektormächtigkeit, die durch das Wegfallen der Isolierschicht mehr als 50% betragen kann.The reduction in collector thickness caused by the loss of the insulating layer can amount to more than 50%.

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

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. Device for increasing the efficiency of solar collectors by using a solar absorber in sandwich design, the first fully flowed absorber, which is characterized in that a back plate ( 5 ) is arranged in parallel below the absorber plate ( 1 ).
2. Daß der dabei zwischen Absorberplatte und Rückenplatte entstehende Hohlraum über sein gesamtes Volumen vollständig von einem Wärmetransportmedium durchströmt werden kann.2. That the cavity created between the absorber plate and the back plate over its entire volume completely from a heat transport medium can be flowed through.
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 befindet3. That between the absorber and the back plate is a profiled plate in the zigzag or wave system ( 3 ), which with the amplitudes of its profile touches the top of the absorber or the back plate, or a flat 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. That this profiled intermediate plate ( 3 ) separates the heat transport medium into two oppositely flowing streams, in the lower ( 4 ) and in the upper ( 2 ) medium stream.
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 und5. That due to the special construction of this intermediate plate at the lowest point of the collector, the lower medium flow ( 4 ) is diverted into the upper medium flow ( 2 ) and
6. Daß die Rückenplatte mit geringem Abstand von einem Reflexionsspiegel (6) unterlagert wird.6. That the back plate is placed at a short distance from a reflection mirror ( 6 ).
DE19849688A 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
DE19849688A 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
DE19849688A 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)

Publication Number Publication Date
DE19849688A1 true DE19849688A1 (en) 2000-05-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19849688A Ceased 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

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Country Link
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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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