US20140345600A1 - Absorber tube - Google Patents

Absorber tube Download PDF

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Publication number
US20140345600A1
US20140345600A1 US14/344,954 US201214344954A US2014345600A1 US 20140345600 A1 US20140345600 A1 US 20140345600A1 US 201214344954 A US201214344954 A US 201214344954A US 2014345600 A1 US2014345600 A1 US 2014345600A1
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US
United States
Prior art keywords
pressure container
solder
container
tube according
tube
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.)
Abandoned
Application number
US14/344,954
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English (en)
Inventor
Marc Mollenhoff
Oliver Sohr
Thomas Kuckelkorn
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.)
Rioglass Solar Holding SA
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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
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Assigned to SCHOTT SOLAR AG reassignment SCHOTT SOLAR AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MOELLENHOFF, MARC, SOHR, OLIVER, KUCKELKORN, THOMAS
Publication of US20140345600A1 publication Critical patent/US20140345600A1/en
Assigned to RIOGLASS SOLAR HOLDING, S.A. reassignment RIOGLASS SOLAR HOLDING, S.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHOTT SOLAR AG
Abandoned legal-status Critical Current

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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
    • F24J2/46—
    • 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
    • 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
    • F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • 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
    • F24S40/40—Preventing corrosion; Protecting against dirt or contamination
    • F24S40/46—Maintaining vacuum, e.g. by using getters
    • 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
    • F24S40/80—Accommodating differential expansion of solar collector elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
    • F24S2025/6011—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules by welding or brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
    • 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
    • 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

Definitions

  • the invention relates to an absorber tube according to the preamble of claim 1 .
  • Solar collectors may be equipped with a parabolic mirror, for example, which is also referred to as a collector mirror, and used in so-called parabolic trough power plants.
  • a parabolic mirror for example, which is also referred to as a collector mirror, and used in so-called parabolic trough power plants.
  • a thermal oil is used as heat-transfer medium, which, by means of the solar rays that are reflected by the parabolic mirrors and focused on the absorber tube, can be heated to approximately 400° C.
  • the heated heat-transfer medium is passed through the metal tube and supplied to a vaporization process, by means of which the thermal energy is converted into electrical energy.
  • the absorber tube is generally composed of a metal tube, which has a radiation-absorbing layer, and a sleeve tube, which encloses the metal tube.
  • the sleeve tube is made of a material that is transparent in the spectral region of solar radiation, preferably being made of glass.
  • the annular space formed between the metal tube and the sleeve tube is generally evacuated and serves to minimize the heat losses at the outer surface of the metal tube and thus to increase the energy input.
  • Such absorber tubes are known from DE 102 31 467 B4, for example.
  • the thermal oil used as heat-transfer medium releases free hydrogen, which is dissolved in the thermal oil.
  • the amount of dissolved hydrogen depends, on the one hand, on the thermal oil used and the operating conditions of oil circulation and, on the other hand, also on the amount of water that comes into contact with the thermal oil. Contact with water can occur more frequently particularly due to leakage in heat exchangers.
  • the released hydrogen enters the evacuated annular space as a result of permeation through the metal tube, the permeation rate also increasing with increasing operating temperature of the metal tube. In consequence, the pressure in the annular space increases as well, which results in an increase in thermal conduction through the annular space, which, in turn, leads to heat losses and to a lower efficiency of the absorber tube or of the solar collector.
  • the hydrogen entering the annular space can be bound by getter materials.
  • getter materials Absorber tubes that are provided with getter materials in the annular space are known from WO 2004/063640 A1, for example.
  • the uptake capacity of the getter materials is limited, however. After the maximum loading capacity has been reached, the pressure in the annular space increases until it is in equilibrium with the partial pressure of the free hydrogen that has entered the annular space from the thermal oil. The hydrogen results in increased thermal conduction in the annular space with the aforementioned detrimental consequences for the efficiency of the solar collector.
  • the inert gas is present in a container that is sealed with solder and is opened from the outside at an appropriate time.
  • an H 2 /inert gas mixture forms in the annular space, the thermal conductivity of which is only slightly greater in comparison to the evacuated state.
  • the accommodation of the container in the vacuum space of the absorber tube necessitates that it be opened in a contact-free manner from the outside. This can be accomplished by melting the solder through heat input.
  • the other possibility consists in opening the container inductively or by heating an intermediate ring in the vicinity of which the container is fixed in place.
  • the drawback of these opening methods is that the heat input cannot be directed specifically onto the solder seal of the container to a sufficient degree, but instead heats all components in the vicinity of the container as well.
  • the sleeve tube is made of glass, the juncture of glass and metallic components (glass-metal juncture) is jeopardized.
  • the position of the container in the sleeve tube has the fundamental drawback that the container is heated by insolation and the solder seal can unintentionally open. Further drawbacks are to be found in the embrittlement of the solder due to hydrogen uptake. Moreover, the complex geometry of the container makes the manufacture of the solder-sealed opening as well as the entire container expensive.
  • the problem of the invention is to provide an absorber tube having a container that does not have the mentioned drawbacks and can be opened in a simple manner.
  • a pressure container is understood to refer to a closed container that has, in particular, a spherical or cylindrical shape.
  • the pressure container can have a tube.
  • the tube can also have a curved shape depending the available design space.
  • the pressure container comprises at least an arched bottom. Preferred is a hemispherical bottom.
  • the lid too, can be arched, in particular also hemispherical in shape.
  • a solder-free pressure container is understood to be a pressure container that has no solder, no seal with solder, and no sealing material made of solder.
  • a solder-free pressure container is a pressure container having a solder-free seal. Seal parts are components of the pressure container and are likewise solder-free.
  • solder is a heat-sensitive material, the melting point of which is far below that of the other material of the pressure container.
  • a solder is understood to refer to a metal alloy that, depending on the specific application, consists of a specific mixture ratio of metals, primarily lead, tin, zinc, silver, and copper.
  • Solder solders together suitable metals and alloys, such as, for example, copper, bronze, brass, tombac, nickel silver, silver, gold, hard lead, zinc, aluminum, as well as iron, by bonding or amalgamating to them on the surface when it is fused and then solidifying upon cooling. This amalgamation of the solder with the metallic workpieces, materials, structural elements, wires, etc.
  • solder has the property that its melting point is lower than that of the metallic workpieces to be joined together.
  • Solder-free means that the pressure container has no solder at any place, particularly not at an opening.
  • the pressure container can have a bottle neck, which has an opening that can be sealed by means of a sealing element in the shape of a plate, for example.
  • the sealing element is preferably fastened to the filled pressure container by means of welding.
  • Preferred welding processes are friction welding, resistance welding, and laser welding.
  • Another preferred embodiment provides that, at both of its ends, the container has a bottle neck with a sealing element.
  • the pressure container is completely closed and does not have a prepared opening that is sealed with a heat-sensitive material, such as, for example, is true in the case a solder seal.
  • the pressure container has at least one opening for filling with protective gas, said opening being sealed with a sealing part.
  • the sealing part may be the lid or the bottom, for example.
  • a preferred sealing part may also be a plate, in particular a round plate.
  • Rotationally symmetrical structural components have the advantage that they can be fastened to the container opening in a simply sealed manner by means of resistance or friction welding.
  • the pressure container may be designed in a bottle shape, for example.
  • the sealing part is fastened to the opening of the bottle neck.
  • the pressure container is made of steel.
  • steel is a material whose mass fraction of iron is greater than that of any other element, whose carbon content is generally ⁇ 2%, and which contains other elements.
  • Steel is resistant to corrosion, impermeable to gas, and mechanically stable, and hence is particularly suitable as a protective gas container.
  • Preferred types of steel are those that preferably can be deep-drawn, are vacuum-tight, and/or are heat-resistant up to approximately 600° C.
  • the pressure container can be opened by means of a laser drilling method. Given an appropriate laser power, the pressure container can be opened in a very short time.
  • the method has the advantage that the pressure container can be opened from the outside without heating the other components of the absorber tube and thus damaging them.
  • the laser beam is aimed specifically onto the container, which can be arranged in the annular space below the sleeve tube at any desired spot that can be reached by the laser beam passing through the sleeve tube.
  • Laser drilling is a non-cutting processing method in which sufficient energy is introduced into the workpiece by means of a laser so as to melt and vaporize the material.
  • the melting point of steel can be adjusted within a wide range up to approximately 1500° C. Therefore, it is possible to adjust the melting point of the container material, including the wall thickness of the pressure container and the laser parameters, to one another, so as to open the container in an optimal manner.
  • the maximum allowable temperature of the pressure container is higher than that of a container sealed with solder. It is not necessary to protect the pressure container from insolation, for example, which leads to heating of the pressure container.
  • the pressure container is made of stainless steel.
  • Stainless steel refers to alloyed or unalloyed steels having a special degree of purity, such as, for example, steels whose sulfur and phosphorus content does not exceed 0.025% (see EN 10020).
  • Preferred stainless steels are Material No. 1.4303 (in particular X4CrNi18-12), Material No. 1.4306 (in particular X2CrNi19-11), Material No. 1.4541, Material No. 1.4571.
  • the pressure container can be arranged at the metal tube or at the sleeve tube by means of a suitable holding device.
  • the pressure container is arranged at a structural component joining the metal tube and the sleeve tube. This can be, in particular, an expansion compensating device.
  • the pressure container can be fastened by welding, for example, preferably by friction welding.
  • Other welding processes such as, for example, laser welding or resistance welding, can also be employed.
  • the wall thickness of the pressure container preferably lies at 0.5-1 mm, in particular at 0.6-0.8 mm.
  • the wall thickness can also be less than 0.5 mm, preferably 0.2 to ⁇ 0.5 mm, in particular 0.45 mm.
  • the pressure container is filled with a protective gas, such as, for example, an inert gas having a low thermal conductivity. Xenon or krypton is particularly preferred.
  • a protective gas such as, for example, an inert gas having a low thermal conductivity. Xenon or krypton is particularly preferred.
  • the pressure in the container at room temperature is preferably 5-10 bars.
  • the pressure container can be arranged at the metal tube, at the sleeve tube, or at a structural component joining a sleeve tube and a metal tube.
  • an expansion compensating device is provided between the sleeve tube and the metal tube, the pressure container is preferably arranged at such an expansion compensating device.
  • This expansion compensating device can have, for example, a bellows and an appropriate connecting element.
  • the pressure container is fastened to the connecting element, for example, by means of a holder, one or a plurality of holding elements, a holding clip, a holding bracket, or else a mounting plate.
  • a mounting plate can also be provided at the metal tube, for example.
  • the holder encloses the pressure container on the side of the pressure container facing the metal tube.
  • the holder preferably has a trough shape.
  • This embodiment of the holder has the advantage that, to a large extent, the pressure container can be protected from emission of heat from the absorber tube, from defocused impinging solar radiation from the collector mirror and direct insolation. Strong insolation can impair the container material in terms of its strength under certain conditions. Moreover, the gas pressure in the pressure container increases due to an increase in temperature. The two effects can possibly bring about bursting of the pressure container. This problem is reduced by the shielding afforded by the holder.
  • the material of the pressure container is vaporized or ejected counter to the impinging beam during laser bombardment and is deposited in the annular space of the absorber tube. Once the wall of the pressure container is penetrated, the protective gas can escape. In this process, the material can also deposit on the inner side of the sleeve tube under some circumstances. The still persisting laser bombardment heats the deposit and thus also the sleeve tube. The effect of this heat is to give rise to mechanical strains in the sleeve tube, which can damage the sleeve tube.
  • an optical element is arranged in the annular space adjacent to the pressure container, this having the advantage that the material of the container that is vaporized or ejected counter to the impinging beam in the direction of the sleeve tube during laser bombardment deposits on this optical element. As a result, this deposit is prevented from forming at the sleeve tube.
  • the optical element can be arranged at the sleeve tube, at the metal tube, or at the pressure container.
  • the holders for the optical element can be combined with the holder for the pressure container, for example, or else arranged at a holder for the pressure container.
  • the optical element is preferably arranged in the region between the pressure container and the sleeve tube.
  • Such an optical element can be a glass plate, in particular a planar glass plate. This glass plate captures the container material and thus protects the sleeve tube.
  • this optical element can also be designed as a lens, in particular as a concave lens, so as to correct the aberrations of the laser beam caused by the sleeve tube.
  • the optical element can be a section of glass tube in which the pressure container is arranged. It is also possible for the glass tube to be processed in one section and provided there, for example, with a planar section or a lens.
  • the optical element is an aperture.
  • the aperture opening is preferably only slightly greater than the beam diameter of the laser beam.
  • the aperture has a circular aperture opening, the diameter of which is preferably 300 ⁇ m.
  • the optical element can also be arranged laterally next to the container.
  • the optical element is preferably a mirror, in particular a deflection mirror.
  • the laser beam is deflected via the deflection mirror onto the container. Because the container material created by laser bombardment disseminates counter to beam direction, it impinges on the mirror and not on the sleeve tube.
  • FIG. 1 a side view of a protective gas container
  • FIG. 2 a cross section through an absorber tube according to a first embodiment
  • FIGS. 3 , 4 , and 5 cross sections of absorber tubes according to other embodiments
  • FIG. 6 an embodiment of an absorber tube in lengthwise section
  • FIGS. 7 to 12 various embodiments with fastening means for the pressure container and the optical element
  • FIG. 13 a trough-shape holder with a pressure container.
  • FIG. 1 Illustrated in FIG. 1 is a pressure container 30 in side view.
  • the pressure container has a bottle-shaped design with a cylindrical jacket 36 and an arched bottom 37 .
  • the bottom is illustrated as a hemispherical bottom.
  • the cylindrical jacket 36 transitions into a bottle neck 38 , which has an opening 39 .
  • the opening 39 is sealed by means of a sealing element in the form of a round plate 60 .
  • the sealing element is fastened to the filled pressure container 30 by means of friction welding, so that a weld seam 62 is created.
  • FIG. 2 Illustrated in FIG. 2 is a cutout of an absorber tube 1 .
  • the absorber tube 1 has a metal tube 10 , through which heat-exchanger fluid flows and, as described in the introduction, has radiation-absorbing layers.
  • the metal tube 10 is arranged concentrically in a sleeve tube 20 that is transparent to solar radiation and is made of glass, for example.
  • a sleeve tube 20 Formed between the metal tube 10 and the sleeve tube 20 is an annular space 5 , which is evacuated.
  • a pressure container 30 Arranged inside of this annular space is a pressure container 30 , which can be fastened to the sleeve tube 20 or to the metal tube 10 by way of a suitable holder (see FIGS. 6-12 ).
  • an optical element Arranged in the region between the pressure container 30 and the sleeve tube 20 is an optical element in the form of a planar glass plate 40 , 42 .
  • a laser beam which impinges on the sleeve tube 20 perpendicularly from above, passes through the sleeve tube 20 and the planar glass plate 42 and then enters the pressure container.
  • the material of the container is released and deposits on the bottom side of the planar glass plate 42 . In this way, container material is prevented from depositing on the sleeve tube 20 .
  • FIG. 3 Illustrated in FIG. 3 is another embodiment, in which the optical element 40 is designed as a concave lens 44 .
  • the aberrations that arise due to the curvature of the sleeve tube 20 can be compensated for by the lens 44 , so that the laser pulse, as provided for, impinges on the container wall.
  • an aperture 46 which has a circular aperture opening 47 that is slightly greater than the diameter of the laser beam 50 .
  • FIG. 5 Illustrated in FIG. 5 is another embodiment, in which the optical element is not arranged in the region between the pressure container 30 and the sleeve tube 20 , but rather is adjacent, next to the pressure container 30 .
  • a mirror 48 which is arranged such that it is employed as a deflection mirror.
  • the laser beam 50 penetrating from the outside, impinges on the mirror 48 and is deflected so that a horizontal beam impinges on the pressure container 30 .
  • the ejected material of the container that is created during laser boring of the pressure container 30 deposits on the mirror 48 and thus does not reach the sleeve tube 20 .
  • the protective gas enters the annular space 5 from the container.
  • FIG. 6 Illustrated in FIG. 6 is one end of an absorber tube 1 in sectional view.
  • a transition element 22 Fastened to the free front-side end of the sleeve tube 20 is a transition element 22 , which has a collar 23 that is directed radially inward.
  • an expansion compensating device 24 Arranged in the annular space 5 formed between the sleeve tube 20 and the metal tube 10 is an expansion compensating device 24 in the form of a bellows 25 , which is fastened at its outer end 26 to the collar 23 of the transition element 22 .
  • the bellows 25 thus extends below the transition element 22 into the annular space 5 and is fastened at its opposite-lying end to a connecting element 27 , which has an annular disc 28 for this purpose.
  • a connecting element 27 which has an annular disc 28 for this purpose.
  • the pressure container 30 Arranged at this annular disc is the pressure container 30 , which is filled with protective gas and is curved correspondingly to the annular disc and extends over a semicircle.
  • an optical element 40 in the form of a glass plate 42 . This glass plate can be flat in design or it may also be curved.
  • FIG. 7 Illustrated in FIG. 7 is a perspective drawing of the absorber tube 1 according to FIG. 6 , such that the curved design of the pressure container can be seen.
  • Two holding elements 32 are provided at the two ends of the curved pressure container 30 , by means of which the container 30 is fastened to the annular disc 28 of the connecting element 27 .
  • FIG. 8 Another embodiment is illustrated in FIG. 8 .
  • the pressure container which takes the form of a bottle, is fastened to the annular disc 28 by means of a holding clip 33 .
  • the pressure container extends parallel to the lengthwise axis of the absorber tube 1 .
  • FIG. 9 Another embodiment is illustrated in FIG. 9 .
  • the pressure container 30 also extends along the lengthwise axis of the absorber tube 1 and is fastened to the annular disc 28 by a suitable fastening element (not illustrated).
  • a suitable fastening element (not illustrated).
  • Arranged at annular disc 28 is another holder 34 , which supports a lens 44 at its end.
  • FIG. 10 Illustrated in FIG. 10 is an embodiment in which the pressure container 30 is situated inside of a glass tube 45 .
  • This embodiment has the advantage that the entire pressure container 30 is shielded and the laser beam can be deflected to any point on the pressure container 30 .
  • FIG. 11 Illustrated in FIG. 11 is another embodiment in which a mounting plate 35 is fastened to the annular disc 28 .
  • the pressure container 30 lies on this mounting plate, which, in addition, supports another holder 49 for the lens 44 .
  • FIG. 12 Illustrated in FIG. 12 is an embodiment in which the mounting plate 35 is arranged on the metal tube 10 and accommodates the pressure container 30 .
  • a trough-shaped holder 70 Illustrated in FIG. 13 is a trough-shaped holder 70 , which is arranged at the annular disc 28 of the expansion compensating device 24 , which is designed as a bellows 25 , by means of a fastening element 78 .
  • the trough-shaped holder 70 has a bottom wall 72 that faces the metal tube 10 .
  • the trough-shaped holder 70 further has side walls 42 , which have inwardly curved shielding walls 76 at the upper edge. As a result, the container 30 is nearly completely enclosed, with only a part of the container wall being left free so that the laser beam can be applied there.
  • the holder 70 serves to accommodate a getter 80 .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Lasers (AREA)
  • Laser Beam Processing (AREA)
  • Exhaust Silencers (AREA)
US14/344,954 2011-09-15 2012-09-14 Absorber tube Abandoned US20140345600A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102011082767.6A DE102011082767B4 (de) 2011-09-15 2011-09-15 Absorberrohr
DE102011082767.6 2011-09-15
PCT/EP2012/068091 WO2013037953A2 (de) 2011-09-15 2012-09-14 Absorberrohr

Publications (1)

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US20140345600A1 true US20140345600A1 (en) 2014-11-27

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US14/344,954 Abandoned US20140345600A1 (en) 2011-09-15 2012-09-14 Absorber tube

Country Status (9)

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US (1) US20140345600A1 (enrdf_load_stackoverflow)
EP (1) EP2756236B1 (enrdf_load_stackoverflow)
CN (1) CN103797311B (enrdf_load_stackoverflow)
DE (1) DE102011082767B4 (enrdf_load_stackoverflow)
ES (1) ES2565659T3 (enrdf_load_stackoverflow)
IL (1) IL231441A (enrdf_load_stackoverflow)
IN (1) IN2014CN02766A (enrdf_load_stackoverflow)
MA (1) MA35424B1 (enrdf_load_stackoverflow)
WO (1) WO2013037953A2 (enrdf_load_stackoverflow)

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US20120186576A1 (en) * 2009-09-29 2012-07-26 Schott Solar Ag Absorber pipe
ES2628632R1 (es) * 2016-02-03 2017-08-03 Schott Ag Procedimiento para la descarga de un depósito de hidrógeno en colectores de cilindro parabólico
ES2628680R1 (es) * 2016-02-03 2017-08-03 Schott Ag Procedimiento y dispositivo para la descarga de un depósito de hidrógeno en colectores de cilindro parabólico
ES2637650R1 (es) * 2014-09-12 2017-12-11 Schott Ag Procedimiento y dispositivo para la introducción de gas inerte en un espacio anular de un tubo colector
US10012415B2 (en) 2013-06-18 2018-07-03 Schott Solar Ag Absorber tube

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JP6686845B2 (ja) * 2016-11-07 2020-04-22 株式会社豊田自動織機 太陽熱集熱装置

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US20100126499A1 (en) * 2008-11-24 2010-05-27 Wei David Lu Solar Thermal Energy Absorber Tube
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US10458680B2 (en) 2016-02-03 2019-10-29 Schott Ag Method and device for discharging a hydrogen storage system in parabolic trough receivers
US10571154B2 (en) 2016-02-03 2020-02-25 Schott Ag Method for discharging a hydrogen storage system in parabolic trough receivers

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DE102011082767B4 (de) 2014-12-04
ES2565659T3 (es) 2016-04-06
EP2756236A2 (de) 2014-07-23
DE102011082767A1 (de) 2013-03-21
WO2013037953A3 (de) 2013-10-10
CN103797311A (zh) 2014-05-14
CN103797311B (zh) 2016-05-18
MA35424B1 (fr) 2014-09-01
IL231441A0 (en) 2014-04-30
IL231441A (en) 2017-11-30
IN2014CN02766A (enrdf_load_stackoverflow) 2015-07-03
WO2013037953A2 (de) 2013-03-21
EP2756236B1 (de) 2016-01-20

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