DE9418744U1 - Absorber tube of thermal solar energy converters for the direct evaporation of the working fluid - Google Patents

Absorber tube of thermal solar energy converters for the direct evaporation of the working fluid

Info

Publication number
DE9418744U1
DE9418744U1 DE9418744U DE9418744U DE9418744U1 DE 9418744 U1 DE9418744 U1 DE 9418744U1 DE 9418744 U DE9418744 U DE 9418744U DE 9418744 U DE9418744 U DE 9418744U DE 9418744 U1 DE9418744 U1 DE 9418744U1
Authority
DE
Germany
Prior art keywords
absorber tube
tube
working medium
absorber
solar energy
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.)
Expired - Lifetime
Application number
DE9418744U
Other languages
German (de)
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 DE9418744U priority Critical patent/DE9418744U1/en
Priority to DE19502070A priority patent/DE19502070A1/en
Publication of DE9418744U1 publication Critical patent/DE9418744U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
    • F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
    • 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
    • F24S10/90—Solar heat collectors using working fluids using internal thermosiphonic circulation
    • F24S10/95—Solar heat collectors using working fluids using internal thermosiphonic circulation having evaporator sections and condenser sections, e.g. heat pipes
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Photovoltaic Devices (AREA)

Description

BeschreibungDescription

Absorberrohr von thermischen Sonnenenergiewandlern zur direkten Verdampfung des ArbeitsmittelsAbsorber tube of thermal solar energy converters for direct evaporation of the working fluid

Bei Absorberrohren herkömmlicher Bauart ist es üblich das Arbeitsmittel flüssig durch das Rohr zu leiten. Zur Erzeugung kinetischer Energie wird anschließend in einem sekundären Kreislauf ein zweites Arbeitsmittel über einen Wärmetauscher erhitzt und verdampft.With conventional absorber tubes, it is usual to pass the working fluid through the tube in liquid form. To generate kinetic energy, a second working fluid is then heated and evaporated via a heat exchanger in a secondary circuit.

Der im Schutzanspruch 1 angegebenen Erfindung liegt das Problem zugrunde, ein Absorberrohr zu schaffen, das die eingestrahlte Sonnenenergie, mit relativ geringem Aufwand und mit hoher Wärmeleitfähigkeit, an das Arbeitsmittel überträgt. Auch soll das Arbeitsmittel direkt im Absorberrohr verdampft werden. Weiterhin soll das Absorberrohr in einem evakuierten Glasrohr untergebracht werden.The invention specified in claim 1 is based on the problem of creating an absorber tube that transfers the radiated solar energy to the working medium with relatively little effort and with high thermal conductivity. The working medium should also be evaporated directly in the absorber tube. Furthermore, the absorber tube should be housed in an evacuated glass tube.

Dieses Problem wird mit den im Schutzanspruch 1 aufgeführten Merkmalen gelöst.This problem is solved with the features listed in claim 1.

Mit der Erfindung wird erreicht, die eingestrahlte Sonnenenergie mit wenig Aufwand und hoher Wärmeleitfähigkeit an das Arbeitsmittel zu übertragen und es direkt im Absorberrohr zu verdampfen. Des weiteren ist durch Hin- und Rückstrom des Arbeitsmittels an einem Ende des Absorberrohres und der damit erreichte Abschluß des Glasrohrs an nur einem Ende, eine einfache Integration in das evakuierte Glasrohr möglich.The invention enables the radiated solar energy to be transferred to the working medium with little effort and high thermal conductivity and to evaporate it directly in the absorber tube. Furthermore, the forward and reverse flow of the working medium at one end of the absorber tube and the resulting closure of the glass tube at only one end make it possible to easily integrate it into the evacuated glass tube.

Ein Ausführungsbeispiel der Erfindung ist in Fig. 1 und Fig. dargestellt.An embodiment of the invention is shown in Fig. 1 and Fig.

Fig. 1 Absorberrohr längs geschnitten Fig. 2 Absorberrohr quer geschnittenFig. 1 Absorber tube cut lengthwise Fig. 2 Absorber tube cut crosswise

In den Fig. 1 und Fig. 2 ist das Glasrohr 1, das Absorberrohr 2, Kanüle 3, Düse 4, Verbindungsstück 5, Ventil 6, Temperaturfühler 7, Regeleinrichtung 8, Ring 9, Fahnen 10 dargestellt.In Fig. 1 and Fig. 2 the glass tube 1, the absorber tube 2, cannula 3, nozzle 4, connecting piece 5, valve 6, temperature sensor 7, control device 8, ring 9, flags 10 are shown.

Wird das Absorberrohr 2 durch die ankommende Sonnenenergie erhitzt, wird die Wärme durch Wärmeleitung an den Temperaturfühler 7 übertragen. Dieser meldet den Temperaturanstieg an die Regeleinrichtung 8, die ab einer gewissen Temperatur das Ventil 6 öffnet. Das Arbeitsmittel befindet sich auf einem relativ hohen Druckniveau gegenüber dem inneren des Absorberrohres, deshalb verdampft es beim ausströhmen aus der Düse 4 und wird durch die Fahnen 10 in eine turbulente Strömung versetzt. Durch die Wahl einer geringen Querschnittsfläche des Absorberrohres 2, können die Durchströmgeschwindikeit des Arbeitsmittels und der Konzentrationsfaktor erhöht werden. Über den Temperaturfühler 7, der im Dampfstrom des Arbeitsmittels angebracht ist, wird die Durchflußmenge des Arbeitsmittels durch das Ventil 6 über die Regeleinrichtung 8 so geregelt, das sich eine konstante Temperatur des Dampfstromes ergibt.If the absorber tube 2 is heated by the incoming solar energy, the heat is transferred to the temperature sensor 7 by heat conduction. This reports the temperature increase to the control device 8, which opens the valve 6 at a certain temperature. The working medium is at a relatively high pressure level compared to the inside of the absorber tube, so it evaporates when it flows out of the nozzle 4 and is set into a turbulent flow by the vanes 10. By choosing a small cross-sectional area of the absorber tube 2, the flow rate of the working medium and the concentration factor can be increased. The flow rate of the working medium through the valve 6 is regulated by the control device 8 via the temperature sensor 7, which is installed in the steam flow of the working medium, so that a constant temperature of the steam flow is achieved.

Claims (1)

SchutzansprücheProtection claims 1. Absorberrohr von thermischen Sonnenenergiewandlern zur direkten Verdampfung des Arbeitsmittels,1. Absorber tube of thermal solar energy converters for direct evaporation of the working medium, dadurch gekennzeichnet,characterized, daß die Glasrohre (1) evakuiert ist, daß die Glasrohre (l) an einem Ende geschlossen ist, das die Glasrohre (1) am anderen Ende durch ein Verbindungsstück (5) abgeschlossen ist, daß das Absorberrohr (2) durch das Verbindungsstück (5) hindurch in das Glasrohr (1) hinneinreicht und mit dem Verbindungsstück (5) verbunden ist, daß das Absorberrohr im Glasrohr (1) durch mindestens einen Ring (9) gestützt wird, daß das Absorberrohr (2) an seinem Ende im Glasrohr (l) geschlossen ist, daß neben oder im Absorberrohr (2) eine Kanüle (3) zum Ende des Absorberrohres (2) verläuft, daß die Kanüle (3) gut wärmeleitend mit dem Absorberrohr (2) verbunden ist, daß die Kanüle (3) im Absorberrohr (2) am Ende durch eine Düse (4) abgeschlossen wird, daß das Arbeitsmittel durch eine Druckdifferenz zwischen Absorberrohr (2) und Kanüle (3) in das innere des Absorberrohrs (2) strömt, daß der durch das Absorberrohr ströhmende Dampf, durch Strömungshindernisse in eine turbulente Strömung gebracht wird, daß der Temperaturfühler (7) gut wärmeleitend mit dem Absorberrohr (2) verbunden ist, daß der Temperaturfühler (7) im Dampfstrom des Arbeitsmittels angebracht ist, daß der Temperaturfühler (7) den Temperaturwert an eine Regeleinrichtung (8) übermittelt, daß die Regeleinrichtung (8), durch Dosierung der Durchflußmenge des Arbeitsmittels über das Ventil (6), die Dampftemperatur des aus dem Absorberrohr (2) strömenden Dampfes auf einen konstanten Temperaturwert regelt.that the glass tubes (1) are evacuated, that the glass tubes (l) are closed at one end, that the glass tubes (1) are closed at the other end by a connecting piece (5), that the absorber tube (2) extends through the connecting piece (5) into the glass tube (1) and is connected to the connecting piece (5), that the absorber tube in the glass tube (1) is supported by at least one ring (9), that the absorber tube (2) is closed at its end in the glass tube (l), that a cannula (3) runs next to or in the absorber tube (2) to the end of the absorber tube (2), that the cannula (3) is connected to the absorber tube (2) in a way that conducts heat well, that the cannula (3) in the absorber tube (2) is closed at the end by a nozzle (4), that the working medium is controlled by a pressure difference between the absorber tube (2) and cannula (3) into the interior of the absorber tube (2), that the steam flowing through the absorber tube is brought into a turbulent flow by flow obstacles, that the temperature sensor (7) is connected to the absorber tube (2) in a way that conducts heat well, that the temperature sensor (7) is installed in the steam flow of the working medium, that the temperature sensor (7) transmits the temperature value to a control device (8), that the control device (8) regulates the steam temperature of the steam flowing out of the absorber tube (2) to a constant temperature value by dosing the flow rate of the working medium via the valve (6).
DE9418744U 1994-10-04 1994-11-14 Absorber tube of thermal solar energy converters for the direct evaporation of the working fluid Expired - Lifetime DE9418744U1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE9418744U DE9418744U1 (en) 1994-11-14 1994-11-14 Absorber tube of thermal solar energy converters for the direct evaporation of the working fluid
DE19502070A DE19502070A1 (en) 1994-10-04 1995-01-16 Solar thermal plant for generating electrical power and heat in adverse northern regions e.g. central and northern Europe,

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9418744U DE9418744U1 (en) 1994-11-14 1994-11-14 Absorber tube of thermal solar energy converters for the direct evaporation of the working fluid

Publications (1)

Publication Number Publication Date
DE9418744U1 true DE9418744U1 (en) 1995-02-09

Family

ID=6916481

Family Applications (1)

Application Number Title Priority Date Filing Date
DE9418744U Expired - Lifetime DE9418744U1 (en) 1994-10-04 1994-11-14 Absorber tube of thermal solar energy converters for the direct evaporation of the working fluid

Country Status (1)

Country Link
DE (1) DE9418744U1 (en)

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