DE10151293A1 - Cooling device for solar collectors opens vent once preset temperature above operating temperature has been reached - Google Patents
Cooling device for solar collectors opens vent once preset temperature above operating temperature has been reachedInfo
- Publication number
- DE10151293A1 DE10151293A1 DE10151293A DE10151293A DE10151293A1 DE 10151293 A1 DE10151293 A1 DE 10151293A1 DE 10151293 A DE10151293 A DE 10151293A DE 10151293 A DE10151293 A DE 10151293A DE 10151293 A1 DE10151293 A1 DE 10151293A1
- Authority
- DE
- Germany
- Prior art keywords
- cooling device
- reached
- preset temperature
- solar collectors
- temperature above
- 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- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
- F24S40/50—Preventing overheating or overpressure
- F24S40/53—Preventing overheating or overpressure by venting solar heat collector enclosures
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
- Building Environments (AREA)
Abstract
Description
In der Technik sind Solarkollektoren verschiedener Bauweise bekannt. Einsatzgebiete sind vor allem Brauchwassererwärmung und Heizungsunterstützung. Eine hohe wirtschaftliche Bedeutung kommt dabei insbesondere Flackkollektoren zu. Various types of solar collectors are known in the art. Areas of application are in front all domestic water heating and heating support. A high economic Flack collectors are particularly important.
Die Aufgabe dieser Kollektoren besteht darin Wärme bei einer Betriebstemperatur bei ca. 60°C bereitzustellen. Dies erfordert eine gute Wärmedämmung des Kollektors, die wiederum im Stillstand, wenn der Kollektor nicht durch das Arbeitsmedium gekühlt wird, zu Stillstandstemperaturen um 200°C führt. Im Stillstand liegen im Kollektor wesentlich höhere Drücke und Temperaturen vor, als im Betrieb. Bekannte Kollektoren werden so ausgelegt, dass sie diesen Anforderungen Stand halten können. Dies setzt dem Einsatz von kostengünstigen Weckstoffen, insbesondere von Kunststoffen, enge Grenzen und führt daher zu hohen Kosten. The task of these collectors is heat at an operating temperature of approx. 60 ° C provide. This requires good thermal insulation of the collector, which in turn is in the Standstill if the collector is not cooled by the working medium Standstill temperatures around 200 ° C leads. At standstill, the collector is much higher Pressures and temperatures before operating. Known collectors are designed so that they can meet these requirements. This implies the use of inexpensive Wake-up substances, especially plastics, have narrow limits and therefore lead to high costs.
Der im Patentanspruch 1 angegebenen Erfindung liegt das Ziel zugrunde, die technischen Anforderungen an die Kollektoren wesentlich zu reduzieren und damit Kosteneinsparungen zu ermöglichen. Dieses Ziel wird dadurch erreicht, dass der Kollektor gekühlt wird, sobald die Temperatur im Innern oberhalb der tatsächlich im Betrieb benötigten Temperaturen liegt. Die mit der Erfindung erreichten Vorteile bestehen insbesondere darin, dass sämtliche Leitungen für deutlich geringere Betriebsdrücke ausgelegt werden können sowie darin, dass kostengünstige Kunststoffe in wesentlich grösserem Umfang eingesetzt werden können, so z. B. beim Bau der Absorber. The invention specified in claim 1 is based on the objective, the technical To significantly reduce requirements for the collectors and thus to save costs enable. This goal is achieved by cooling the collector as soon as the The temperature inside is above the temperatures actually required during operation. The advantages achieved with the invention are in particular that all Lines can be designed for significantly lower operating pressures and in that Inexpensive plastics can be used on a much larger scale. B. when building the absorber.
Eine vorteilhafte Ausgestaltung der Erfindung ist im Patentanspruch 3 angegeben. Die Weiterbildung nach Patentanspruch 3 ermöglicht eine kostengünstige Kühlung des Kollektors, die unabhängig von einer Stromversorgung funktioniert. Damit erfolgt eine Kühlung auch dann, wenn der Stillstand, der zu den erhöhten Temperaturen führt, durch einen Stromausfall verursacht wird. An advantageous embodiment of the invention is specified in claim 3. The Further development according to claim 3 enables inexpensive cooling of the collector, that works independently of a power supply. This means that cooling also takes place if the standstill that leads to the elevated temperatures is due to a power failure is caused.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben. An embodiment of the invention is shown in the drawing and is described below described in more detail.
Die Figur zeigt einen Schnitt durch den oberen Bereich eines Flachkollektors. Übliche Komponenten solcher Kollektoren sind das Deckglas (5), der Absorber (6) Die Rückwand (10) und die obere Gehäusewand (9). In der oberen Gehäusewand (9) ist erfindungsgemäss ein Lüftungsloch (7) angebracht, das bei normalen Betriebstemperaturen durch die Feder (4) mit dem Deckel (3) verschlossen wird. Hinter dem Absorber (6) ist der Bimetallstreifen (1) so befestigt, dass sein freies Ende sich durch die Verformung des Streifens im Falle einer Temperaturerhöhung von der Deckwand weg bewegt. Dieses freie Ende ist über den Seilzug (2) mit dem Deckel (3) verbunden, der sich ab einer durch die Justierschraube (8) einstellbaren Temperatur zu öffnen beginnt. Eine identische Vorrichtung befindet sich in der unteren Gehäusewand. Werden beide Lüftungslöcher geöffnet, so sorgt der Kamineffekt von sich aus für eine effektive Kühlung des Kollektors, eine weitere Erwärmung wird damit vermieden. The figure shows a section through the upper area of a flat collector. Common components of such collectors are the cover glass ( 5 ), the absorber ( 6 ), the rear wall ( 10 ) and the upper housing wall ( 9 ). According to the invention, a ventilation hole ( 7 ) is provided in the upper housing wall ( 9 ), which is closed at normal operating temperatures by the spring ( 4 ) with the cover ( 3 ). The bimetallic strip ( 1 ) is attached behind the absorber ( 6 ) in such a way that its free end moves away from the top wall due to the deformation of the strip in the event of a temperature increase. This free end is connected to the cover ( 3 ) via the cable ( 2 ), which begins to open at a temperature that can be set by the adjusting screw ( 8 ). An identical device is located in the lower housing wall. If both ventilation holes are opened, the chimney effect automatically cools the collector effectively, preventing further heating.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10151293A DE10151293A1 (en) | 2001-10-22 | 2001-10-22 | Cooling device for solar collectors opens vent once preset temperature above operating temperature has been reached |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10151293A DE10151293A1 (en) | 2001-10-22 | 2001-10-22 | Cooling device for solar collectors opens vent once preset temperature above operating temperature has been reached |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10151293A1 true DE10151293A1 (en) | 2003-04-30 |
Family
ID=7702823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10151293A Withdrawn DE10151293A1 (en) | 2001-10-22 | 2001-10-22 | Cooling device for solar collectors opens vent once preset temperature above operating temperature has been reached |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10151293A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005022048A1 (en) * | 2003-08-29 | 2005-03-10 | Solar Systems | Emergency cooling system |
DE102006040447B3 (en) * | 2006-08-24 | 2008-02-28 | Haticon Gmbh | Solar collector has ventilated housing with framework, having rear walled thermal insulation and radiation permeable front cover as well as absorber unit, where absorber unit is arranged between front cover and thermal insulation |
DE102008053192A1 (en) * | 2008-10-24 | 2010-04-29 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Solar collector with cooling function |
FR2956728A1 (en) * | 2010-02-22 | 2011-08-26 | Commissariat Energie Atomique | Heat solar collector for transmitting solar energy received by heat exchange coolant, has closing unit comprising actuating unit with shape memory alloy to open closing unit beyond preset temperature of collector |
DE102014225531A1 (en) * | 2014-12-11 | 2016-06-16 | Robert Bosch Gmbh | Collector aeration device and collector |
-
2001
- 2001-10-22 DE DE10151293A patent/DE10151293A1/en not_active Withdrawn
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005022048A1 (en) * | 2003-08-29 | 2005-03-10 | Solar Systems | Emergency cooling system |
DE102006040447B3 (en) * | 2006-08-24 | 2008-02-28 | Haticon Gmbh | Solar collector has ventilated housing with framework, having rear walled thermal insulation and radiation permeable front cover as well as absorber unit, where absorber unit is arranged between front cover and thermal insulation |
DE102008053192A1 (en) * | 2008-10-24 | 2010-04-29 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Solar collector with cooling function |
EP2182302A2 (en) | 2008-10-24 | 2010-05-05 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Solar collector with cooling function |
FR2956728A1 (en) * | 2010-02-22 | 2011-08-26 | Commissariat Energie Atomique | Heat solar collector for transmitting solar energy received by heat exchange coolant, has closing unit comprising actuating unit with shape memory alloy to open closing unit beyond preset temperature of collector |
DE102014225531A1 (en) * | 2014-12-11 | 2016-06-16 | Robert Bosch Gmbh | Collector aeration device and collector |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |