DE2929219A1 - Solar heating system for corrugated roof - has blackened perforated sheet resting on corrugations, above reflective foil and hot air extracted - Google Patents

Solar heating system for corrugated roof - has blackened perforated sheet resting on corrugations, above reflective foil and hot air extracted

Info

Publication number
DE2929219A1
DE2929219A1 DE19792929219 DE2929219A DE2929219A1 DE 2929219 A1 DE2929219 A1 DE 2929219A1 DE 19792929219 DE19792929219 DE 19792929219 DE 2929219 A DE2929219 A DE 2929219A DE 2929219 A1 DE2929219 A1 DE 2929219A1
Authority
DE
Germany
Prior art keywords
corrugations
perforated sheet
blackened
heating system
absorber
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Withdrawn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
DE19792929219
Other languages
German (de)
Inventor
Franz Prof Dr Ing Wieneke
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19792929219 priority Critical patent/DE2929219A1/en
Publication of DE2929219A1 publication Critical patent/DE2929219A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F24S20/60—Solar heat collectors integrated in fixed constructions, e.g. in buildings
    • F24S20/67—Solar heat collectors integrated in fixed constructions, e.g. in buildings in the form of roof constructions
    • 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

Abstract

The solar heating system using a corrugated roof (1) has insulating strips (3) positioned along the crests of the corrugations, and a blackened, perforated sheet (2) is placed on top. Air is sucked through the perforations (4) and into the spacers (5) below, between the corrugations. The heated air can be drawn into a collector duct and used for a suitable process or used in a heat pump to provide hot water. A reflective foil (7) can be applied to the corrugated surface underneath the perforated sheet. There is less heat lost by convection by using this system. The heated air can be drawn upwards past overlapping corrugated sheets to a collector duct at the top.

Description

Sol dach AbsorberSol roof absorber

Die Erfindung betrifft einen Solarabsorber für Dachbedeckungen, Es ist bekannt, Dächer mit schwarzen Platten zu belegen, unter denen die Luft abgesaugt wird. Solche einfache Absorber nutzen, da die erwärmte Fläche der äußeren Konvektion ausgesetzt ist, nur einen geringen Anteil der eingestrahlten Wärme aus.The invention relates to a solar absorber for roof coverings, Es it is known to cover roofs with black panels, under which the air is sucked out will. Such simple absorbers use, as the heated surface of the external convection exposed to only a small proportion of the radiated heat.

Mit Glas oder transparenten Kunststoff abgedeckte Absorber vermindern die Wärmeverluste durch Konvektion und Strahlung, sind aber beträchtlich aufwendiger, Aufgabe der Erfindung ist es, den Solarabsorber mit der üblichen Dachbedeckung derart zu integrieren, daß sich eine einfache effiziente Bauart ergibt.Reduce absorbers covered with glass or transparent plastic the heat losses through convection and radiation, but are considerably more expensive, The object of the invention is to provide the solar absorber with the usual roof covering in this way to integrate that a simple, efficient design results.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Absorber, der über einer Dachbedeckung angeordnet ist, mit einer Lochung versehen oder als lufldurchlässiges Gewebe ausgebildet wird. Durch die Lochung oder die Gewebemaschen wird die Luft in den Zwischen raum zwischen Absorber und Dachbedeckung eingesaugt. Sie reißt dabei die erwärmte Grenzschicht auf der Absorberfläche mit; die äußere Luftbewegung kann somit die erwärmte Grenzschicht nicht mehr abtragen, Dgmit werden die Konvektionsverluste praktisch unterbundon.This object is achieved according to the invention in that the absorber, which is arranged over a roof covering, provided with a perforation or as Air-permeable fabric is formed. Through the perforation or the fabric mesh the air is sucked into the space between the absorber and the roof covering. It pulls the heated boundary layer with it on the absorber surface; the outer Air movement can therefore no longer remove the heated boundary layer, Dgmit the convection losses practically eliminated.

In weiterer Ausbildung des Absorbers ist seine Fläche selektiv beschichtet, Die sele4tlve Beschichtung vermindert die Emission der infraroten Strahlung, Eine weitere Verminderung der Wärmeverluste wird dadurch erreicht, daß die Dachbedeckung auf der dem Absorber zugewandten Seite mit einer reflektierenden Schicht oder einer Folie belegt ist, welche die Wärmestrahlung zurückwirft. Um die Wärmeleitung der Folie zur Dachbedeckung gering zu halten, liegt sie nur in Linien oder einigen Punkten auf.In the further development of the absorber, its surface is selectively coated, The sele4tlve coating reduces the emission of infrared radiation, One Further reduction in heat losses is achieved by the roof covering on the side facing the absorber with a reflective layer or a Foil is covered, which reflects the thermal radiation. To the conduction of the To keep the roof covering thin, it only lies in lines or a few points on.

In den Fig. 1 und 2 ist der Erfindungsgegenstand als Beispiel dargestellt. Über einer welligen Dachbedeckung 1 liegt mit Distanz auf den wärmeisolierenden Leisten 3 eine gelochte, geschwärzte Platte 2 auf. Durch die Löcher 4 wird die äußere Luft und insbesondere die erwärmte Grenzschicht über dem Absorber in den Kanal 5 eingesaugt, Die dem Absorber zugewandte Seite der Dachbedeckung 1 ist mit einer Folie 6 belegt, welche die infrarote Strahlung reflektiert.In FIGS. 1 and 2, the subject matter of the invention is shown as an example. Over a wavy roof covering 1 lies at a distance on the heat-insulating Make 3 a perforated, blackened plate 2. Through the holes 4 is the outer Air and in particular the heated boundary layer above the absorber into duct 5 sucked in, the absorber facing side of the roof covering 1 is with a Foil 6 occupied, which reflects the infrared radiation.

Die Dachbedeckung ist an ihrer Oberseite rillen- oder kalottenförmig ausgenommen, so daß sich zwischen der Folie 6 und der Dachbedeckung abgeschlossene Luftzwischenräume 7 ergeben, die eine Isolierung bewirken.The roof covering is groove-shaped or dome-shaped on its upper side except, so that closed between the film 6 and the roof covering Air gaps 7 result, which cause insulation.

Die erwärmte Luft tritt aus dem Kanal 5 in den Dachraum frei aus oder wird in einen Sammelkanal 8 geleitet. Aus dem freien Dachraum oder über dem Sammelkanal 8 kann die erwärmte Luft für Trocknungszwecke oder für die Wassererwärmung mittels einer Wärmepumpe benutzt werden,The heated air escapes freely or from channel 5 into the roof space is passed into a collecting channel 8. From the free roof space or above the collecting duct 8 can use the heated air for drying purposes or for water heating by means of a heat pump can be used,

Claims (1)

Patentansprüche 1 bis 3 Anspruch 1 Solardachabsorber, angeordnet über einer Dachbedeckung, wobei der so ausgebildete Zwischenraum zwischen Dachbedeckung und Absorber von Luft durchflossen ist, dadurch gekennzeichnet, daß er für den Lufteintritt mit einer Lochung versehen oder als luftdurchlässiges Gewebe ausgebildet ist.Claims 1 to 3 Claim 1 solar roof absorber, arranged over a roof covering, the intermediate space thus formed between roof covering and absorber is traversed by air, characterized in that it is for the air inlet is provided with a perforation or designed as an air-permeable fabric. Anspruch 2 : Solardachabsorber, dadurch gekennzeichnet, daß die der Strahlung zugewandte Seite selektiv beschichtet ist, Anspruch 3 : Dachbedeckung nach Anspruch 1, dadurch gekennzeichnet, daß die dem Absorber zugewandte Seite mit einer die infrarote Strahlung reflektierenden Schicht oder Folie belegt ist, wobei die Folie nur punktuell oder in Linien auf der Dachbedeckung aufliegt, so daß ein isolierender Luftzwischenraum vorliegt. Claim 2: solar roof absorber, characterized in that the Radiation-facing side is selectively coated, claim 3: roof covering according to claim 1, characterized in that the side facing the absorber with a layer or film that reflects the infrared radiation is coated, with the film rests only punctually or in lines on the roof covering, so that a there is an insulating air gap.
DE19792929219 1979-07-19 1979-07-19 Solar heating system for corrugated roof - has blackened perforated sheet resting on corrugations, above reflective foil and hot air extracted Withdrawn DE2929219A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792929219 DE2929219A1 (en) 1979-07-19 1979-07-19 Solar heating system for corrugated roof - has blackened perforated sheet resting on corrugations, above reflective foil and hot air extracted

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792929219 DE2929219A1 (en) 1979-07-19 1979-07-19 Solar heating system for corrugated roof - has blackened perforated sheet resting on corrugations, above reflective foil and hot air extracted

Publications (1)

Publication Number Publication Date
DE2929219A1 true DE2929219A1 (en) 1981-02-05

Family

ID=6076152

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792929219 Withdrawn DE2929219A1 (en) 1979-07-19 1979-07-19 Solar heating system for corrugated roof - has blackened perforated sheet resting on corrugations, above reflective foil and hot air extracted

Country Status (1)

Country Link
DE (1) DE2929219A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0380349A1 (en) 1989-01-27 1990-08-01 Solarwall International Limited Improved method and apparatus for preheating ventilation air for a building

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0380349A1 (en) 1989-01-27 1990-08-01 Solarwall International Limited Improved method and apparatus for preheating ventilation air for a building
EP0553893A2 (en) * 1989-01-27 1993-08-04 Solarwall International Limited Improved method and apparatus for preheating ventilation air for a building
EP0553893A3 (en) * 1989-01-27 1993-10-27 Solarwall Int Ltd Improved method and apparatus for preheating ventilation air for a building

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee