DE102016207884A1 - High efficiency solar collector - Google Patents

High efficiency solar collector Download PDF

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Publication number
DE102016207884A1
DE102016207884A1 DE102016207884.4A DE102016207884A DE102016207884A1 DE 102016207884 A1 DE102016207884 A1 DE 102016207884A1 DE 102016207884 A DE102016207884 A DE 102016207884A DE 102016207884 A1 DE102016207884 A1 DE 102016207884A1
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DE
Germany
Prior art keywords
solar collector
double
absorber
cover
housing
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Withdrawn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
DE102016207884.4A
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German (de)
Inventor
Aurora Monsalve-González
Frank Salg
Thomas-Friedrich Szuder
Hans-Josef Spahn
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Vaillant GmbH
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Vaillant GmbH
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Publication date
Application filed by Vaillant GmbH filed Critical Vaillant GmbH
Priority to DE102016207884.4A priority Critical patent/DE102016207884A1/en
Publication of DE102016207884A1 publication Critical patent/DE102016207884A1/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
    • F24S10/753—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations the conduits being parallel to each other
    • 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
    • F24S2080/501—Special shape
    • F24S2080/502—Special shape in the form of multiple covering elements
    • 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
    • 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)
  • Chemical & Material Sciences (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Development (AREA)
  • Dispersion Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Photovoltaic Devices (AREA)
  • Laminated Bodies (AREA)

Abstract

Bei einem thermischen Solarkollektor mit einem Gehäuse (4), welches auf einer Seite über eine strahlungsdurchlässige Abdeckung (1) verfügt, und einem Absorber (2) in dem Gehäuse (4), ist die Abdeckung eine transparenten Doppelstegplatte (1) und zwischen Absorber (2) und der Doppelstegplatte (1) ist eine hochtemperaturfesten Folie (6) oder ein Dünnglas angeordnet.In a thermal solar collector with a housing (4) which has a radiation-permeable cover (1) on one side, and an absorber (2) in the housing (4), the cover is a transparent double-wall plate (1) and between absorbers ( 2) and the double-wall plate (1) is a high-temperature resistant film (6) or a thin glass arranged.

Description

Die Erfindung betrifft einen Solarabsorber (Solarthermie).The invention relates to a solar absorber (solar thermal).

Üblicherweise besteht ein Solarthermiekollektor aus einer optischen Abdeckung aus einem hochtransparenten Einscheibensicherheitsglas (ESG), unter dem ein selektiv beschichteter Absorber liegt. Der Absorber erwärmt sich durch die durch das Glas eintreffenden Sonnenstrahlen und gibt Wärme an ein Solarfluid, welches durch den Absorber strömt, ab. Zumeist liegt der Absorber auf einer temperaturfesten Dämmung. Durch die Glasabdeckung wird dabei wieder thermische Energie in Form von Wärmestrahlung, als auch Wärmeleitung an die Umgebung abgeführt. Typically, a solar thermal collector consists of an optical cover made of a highly transparent toughened safety glass (ESG), under which a selectively coated absorber is located. The absorber heats up through the sun's rays passing through the glass and gives off heat to a solar fluid flowing through the absorber. In most cases, the absorber is on a temperature-resistant insulation. Through the glass cover while thermal energy in the form of heat radiation, as well as heat conduction is dissipated to the environment.

Aufgabe der vorliegenden Erfindung ist es, diese Wärmeverluste zu mindern.The object of the present invention is to reduce these heat losses.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass bei einem thermischen Solarkollektor die optische Abdeckung aus einer Doppelstegplatte besteht und zwischen der Doppelstegplatte und dem Absorber eine zusätzliche Folie zur Reduktion der Konvektion eingebracht ist.According to the invention the object is achieved in that in a thermal solar collector, the optical cover consists of a double-skin plate and between the double-skin plate and the absorber an additional film is introduced to reduce the convection.

Die Erfindung wird anhand der Figuren detailliert erläutert. Hierbei zeigen:The invention will be explained in detail with reference to FIGS. Hereby show:

1 einen thermischen Solarkollektor gemäß dem Stand der Technik und 1 a thermal solar collector according to the prior art and

2 einen erfindungsgemäßen Solarkollektor. 2 a solar collector according to the invention.

1 zeigt einen thermischen Solarkollektor mit einem Gehäuse 4. Auf einer Seite verfügt das Gehäuse 4 über eine strahlungsdurchlässige Abdeckung 1 in Form einer Glasscheibe. In dem Gehäuse 4 ist unterhalb der Abdeckung 1 ein Absorber 2 oberhalb einer Dämmung 3 angebracht. Der Absorber 2 besteht aus einer Rohrleitung für ein Fluid und eine mit der Rohrleitung verbundenen Absorberplatte. 1 shows a thermal solar collector with a housing 4 , On one side has the case 4 via a radiation-permeable cover 1 in the form of a glass pane. In the case 4 is below the cover 1 an absorber 2 above an insulation 3 appropriate. The absorber 2 consists of a pipeline for a fluid and an absorber plate connected to the pipeline.

Fällt Sonnenstrahlung in das Gehäuse 4 ein, so erhitzt diese den Absorber 2. Ist der Absorber 2 fluiddurchströmt, so kann die Wärme an einen Verbraucher abgegeben werden. Ein Teil der Wärme strahlt vom Absorber 2 wieder in die Umgebung. Ein Teil der Wärme wird mittels Konvektion 5 zur Abdeckung geleitet; hiervon gelangt wiederum ein Teil in die Umgebung. If solar radiation falls into the housing 4 a, so this heats the absorber 2 , Is the absorber 2 flows through fluid, the heat can be delivered to a consumer. Part of the heat radiates from the absorber 2 back in the area. Part of the heat is by convection 5 directed to the cover; this in turn gets a part in the environment.

2 zeigt den erfindungsgemäßen Solarkollektor, der sich von demjenigen in 1 dadurch unterscheidet, dass die Abdeckung 1 eine transparente Doppelstegplatte ist und zwischen dem Absorber 2 und der Doppelstegplatte 1 eine hochtemperaturfeste Folie 6 angeordnet ist. 2 shows the solar collector according to the invention, which differs from that in 1 this distinguishes the cover 1 a transparent double-wall plate is and between the absorber 2 and the double bridge plate 1 a high temperature resistant film 6 is arranged.

Die Doppelstegplatte 1 kann aus Glas oder Kunststoff hergestellt sein, wobei sich als Werkstoff vorzugsweise Polymethylmethacrylat eignet. Die Doppelstegplatte 1 verbindet über mehrere Verbindungen zwei parallele Platten, so dass mehrere Kammern entstehen. Alternativ kann auch ein Dünnglas verwendet werden. The double bridge plate 1 may be made of glass or plastic, preferably polymethyl methacrylate is suitable as a material. The double bridge plate 1 connects two parallel plates via several connections, so that several chambers are formed. Alternatively, a thin glass can be used.

Die Folie 6 ist vorzugsweise aus Ethylen-Tetrafluorethylen hergestellt. The foil 6 is preferably made of ethylene-tetrafluoroethylene.

Die Materialien haben sich als UV-stabil erwiesen. The materials have proven to be UV stable.

Erst die Reduktion der Konvektion mittels der Folie 6 ermöglicht den Einsatz von Kunststoff bei der Doppelstegplatte, da diese geringer thermisch belastet wird als bei konventionellen Kollektoren.First the reduction of convection by means of the foil 6 allows the use of plastic in the double-skin plate, as this is less thermally stressed than conventional collectors.

Die Doppelstegplatte 1 isoliert wesentlich besser als Glas. Die Folie 6 verringert die Konvektion 5 im Kollektor. Die Folie 6 ist dabei einzuspannen, wobei die Wärmeausdehnung bei Erwärmung berücksichtigt werden muss. The double bridge plate 1 Insulates much better than glass. The foil 6 reduces convection 5 in the collector. The foil 6 is to be clamped, whereby the thermal expansion must be taken into account when heating.

Claims (4)

Thermischer Solarkollektor mit einem Gehäuse (4), welches auf einer Seite über eine strahlungsdurchlässige Abdeckung (1) verfügt, und einem Absorber (2) in dem Gehäuse (4), dadurch gekennzeichnet, dass die Abdeckung eine transparenten Doppelstegplatte (1) ist und zwischen Absorber (2) und der Doppelstegplatte (1) eine hochtemperaturfeste Folie (6) oder ein Dünnglas angeordnet ist.Thermal solar collector with a housing ( 4 ), which on one side over a radiolucent cover ( 1 ), and an absorber ( 2 ) in the housing ( 4 ), characterized in that the cover is a transparent double-walled plate ( 1 ) and between absorbers ( 2 ) and the double bridge plate ( 1 ) a high temperature resistant film ( 6 ) or a thin glass is arranged. Thermischer Solarkollektor nach Anspruch 1, dadurch gekennzeichnet, dass die Doppelstegplatte (1) aus Glas oder Kunststoff hergestellt ist. Thermal solar collector according to claim 1, characterized in that the double- wall plate ( 1 ) is made of glass or plastic. Thermischer Solarkollektor nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Folie (6) aus Ethylen-Tetrafluorethylen hergestellt ist. Thermal solar collector according to claim 1 or 2, characterized in that the film ( 6 ) is made of ethylene-tetrafluoroethylene. Thermischer Solarkollektor nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Doppelstegplatte (1) aus Polymethylmethacrylat hergestellt ist.Thermal solar collector according to one of claims 1 to 3, characterized in that the double- wall plate ( 1 ) is made of polymethylmethacrylate.
DE102016207884.4A 2016-05-09 2016-05-09 High efficiency solar collector Withdrawn DE102016207884A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102016207884.4A DE102016207884A1 (en) 2016-05-09 2016-05-09 High efficiency solar collector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016207884.4A DE102016207884A1 (en) 2016-05-09 2016-05-09 High efficiency solar collector

Publications (1)

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DE102016207884A1 true DE102016207884A1 (en) 2017-11-09

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DE102016207884.4A Withdrawn DE102016207884A1 (en) 2016-05-09 2016-05-09 High efficiency solar collector

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7811179U1 (en) * 1978-04-14 1978-08-03 Buderus Ag, 6300 Lahn-Wetzlar SOLAR COLLECTOR
EP0733754A2 (en) * 1995-03-24 1996-09-25 Röhm Gmbh Hail resistant multilayer cross-braced plate made from polymethylmethacrylate
DE20311784U1 (en) * 2003-07-29 2004-01-15 J.O.S.T. Marketing Gmbh Solar collector has trough-shaped base and highly-transparent lid which is thermally insulating or incorporates thermally-insulating layer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7811179U1 (en) * 1978-04-14 1978-08-03 Buderus Ag, 6300 Lahn-Wetzlar SOLAR COLLECTOR
EP0733754A2 (en) * 1995-03-24 1996-09-25 Röhm Gmbh Hail resistant multilayer cross-braced plate made from polymethylmethacrylate
DE20311784U1 (en) * 2003-07-29 2004-01-15 J.O.S.T. Marketing Gmbh Solar collector has trough-shaped base and highly-transparent lid which is thermally insulating or incorporates thermally-insulating layer

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R163 Identified publications notified
R079 Amendment of ipc main class

Free format text: PREVIOUS MAIN CLASS: F24J0002500000

Ipc: F24S0080500000

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee