US20120017887A1 - Receiver pipe - Google Patents

Receiver pipe Download PDF

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Publication number
US20120017887A1
US20120017887A1 US13/142,739 US200913142739A US2012017887A1 US 20120017887 A1 US20120017887 A1 US 20120017887A1 US 200913142739 A US200913142739 A US 200913142739A US 2012017887 A1 US2012017887 A1 US 2012017887A1
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United States
Prior art keywords
tube
case portion
receiver
absorber
receiver tube
Prior art date
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Abandoned
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US13/142,739
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English (en)
Inventor
Axel Ahnert
Peter Ahnert
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Individual
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Individual
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Publication of US20120017887A1 publication Critical patent/US20120017887A1/en
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
    • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • 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
    • 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
    • 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
    • F24S23/79—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with spaced and opposed interacting reflective surfaces
    • 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
    • F24S23/80—Arrangements for concentrating solar-rays for solar heat collectors with reflectors having discontinuous faces
    • 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
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S2020/10—Solar modules layout; Modular arrangements
    • F24S2020/18—Solar modules layout; Modular arrangements having a particular shape, e.g. prismatic, pyramidal
    • 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
    • F24S2023/83—Other shapes
    • 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
    • F24S2080/503—Special shape in the form of curved covering elements
    • 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 concerns a receiver tube for a solar trough collector of the kind set forth in the classifying portion of claim 1 .
  • Solar power plants are known in which sunlight is converted into heat by means of a multiplicity of parabolic trough collectors.
  • Those trough collectors involve mirrors which are shaped parabolically with a single axis and which are arranged in long rows and each of which focuses the solar radiation incident thereon onto a focal line in which an absorber tube forming the central component of a receiver tube is arranged and is connected to the absorber tubes of the adjacent mirrors in order in that way to form a flow path for a heat carrier medium (generally a heat carrier oil) which, after having been heated in the absorber tube arrangement to up to 400° C. goes to a heat exchanger in which steam is generated, driving a generator for electric current by way of a turbine. In other variants steam is heat directly in the absorber tube arrangement.
  • a heat carrier medium generally a heat carrier oil
  • the receiver tube includes a gas-tightly closed casing tube which surrounds the absorber tube and is evacuated or is filled with a gas which is a poor heat conductor in order to thermally insulate the absorber tube.
  • the absorber tube is passed out of the casing tube at the end regions thereof to be able to make a flow communication with the absorber tubes of the adjacent mirrors.
  • parabolic mirrors are used with a mirror surface area of about 360,000 square meters, which are equipped with 15,000 receiver tubes involving a total length of 60 kilometers.
  • a disadvantage with the known receiver tubes is that their absolutely gas-tightly closed casing tubes comprise glass and therefore have a certain tendency to fracture, which can have the result that, within a short time, a large number of receiver tubes lose thermal insulation and have to be replaced, because otherwise the efficiency of the plant suffers excessively.
  • Such an exchange operation which involves an interruption in the flow path for the heat carrier medium, at least parts of the plant have to be shut down, such an exchange operation is carried out only at times of low or no solar radiation, in particular in the evening or at night. That involves on the one hand additional complication and expenditure and on the other hand means that the plant can only continue to be operated at a reduced level of efficiency, until there is a period of time which is appropriate for the exchange operation.
  • the object of the invention is to develop a receiver tube of the kind set forth in the opening part of this specification, such that it can be inexpensively produced and easily fitted and by virtue of a substantially improved resistance to fracture, has an increased service life, whereby the frequency of exchange operations is considerably reduced.
  • the casing tube has two case portions which are connected together preferably by a heat-resistant silicone adhesive and of which only the first comprises a comparatively fragile material while the second is made from a break-resistant material, in particular metal and particularly preferably high-quality steel, the strength of the receiver tube is considerably increased because the break-resistant case portion can carry practically all forces which act on the receiver tube in production, upon storage, transport, upon assembly and during operation.
  • the first, less break-resistant case portion practically represents a window which is carried and stabilized by the second case portion and which is just so great that in the mounted condition the solar radiation reflected by the associated trough collector can pass through it into the interior of the casing tube and can be incident on the absorber tube.
  • the through-passage means through the casing tube which are required for connecting the absorber tube to the absorber tubes of the adjacent receiver tubes, can be made in the second case portion which, particularly when it comprises metal, can readily carry the forces which occur for example upon changes in length caused by temperature fluctuations, so that in contrast it is possible to dispense with the length compensation bellows which are required in the state of the art and which are connected to the ends of the absorber tube and which are generally welded into the ends of the casing tube that comprises glass, at least when correspondingly great wall thicknesses are employed. If that is unwanted, such compensating bellows can also be used in a receiver tube according to the invention.
  • a particular advantage of a receiver tube according to the invention is that, even when breakage of the first, radiation-transmissive case portion generally consisting of an inexpensive glass occurs, there is no need to completely replace the receiver tube in question. Rather, without interrupting operation of the plant, the broken first case portion can be released from the second case portion which remains at its position of installation and which carries the absorber tube and can be replaced by a new “glass window”.
  • a further problem with solar power plants with trough collectors is that the latter are frequently not exposed over their entire length to the same ambient conditions, because of their considerable extent.
  • different air flows mean that locally limited cooling of the collector material can occur, which does not involve the entire collector, so that that can entail local deformation phenomena and thus deviations from the ideal parabolic shape.
  • Such deviations can also occur due to non-optimum mounting of the collectors or have to be minimized in plants corresponding to the state of the art by a very high level of structural and work-related technical complication and expenditure.
  • DE 103 05 428 A1 mentions other secondary concentrators which serve to overcome the focusing errors and which for example involve a polished metal sheet which is fixed in the interior of the casing tube either thereon or on the absorber tube. That kind of secondary concentrators is identified as being disadvantageous because they lead to shadowing of the absorber tube and thus a worsening of the level of efficiency. In addition such a sheet represents an additional component, the production and fitting of which increase the costs of a receiver tube.
  • the second case portion is so shaped and designed that it acts as a secondary concentrator, that is to say it focuses the solar radiation incident thereon towards the absorber tube because the solar radiation is not thrown onto the absorber tube by the associated trough collector.
  • the second case portion on its concave inside, can either have a smooth surface which is adapted to be reflecting in particular by mirroring, or structures can be provided on that inside, which lead to a deviation from the smooth surface and which are so designed that they exert a light deflection function in such a way that they deflect sunlight onto the absorber tube, the energy content of which would otherwise be lost, with their reflecting and in particular mirrored surfaces.
  • the second case portion comprises a material which is easy to work, in particular metal, the above-mentioned structures which can be raised or recessed can be easily and inexpensively produced in one piece thereon or can be fixed thereto. Additional components as are mentioned in the above-discussed state of the art are not required in that case.
  • the slight shadowing of the absorber tube in relation to solar radiation incident from the exterior on the second case portion can be tolerated as the slight loss in energy yield which is caused thereby is by far outweighed by the other advantages.
  • a particularly preferred variant of the receiver tube according to the invention provides a valve arrangement extending through the wall of the second case portion from the exterior into the internal space.
  • That valve arrangement can include either only one valve which can be connected to a gas suction removal pump by way of a suction conduit to restore the vacuum present in the interior of the casing tube.
  • each of those valves is in the form of a non-return valve in order to ensure that upon fracture of one of the casing tubes, the entire suction conduit and all casing tubes connected thereto by way of the above-mentioned valves are not filled with ambient air.
  • valves of a plurality of casing tubes are always connected to one and the same gas feed conduit and one and the same gas suction conduit.
  • the operating pressure of the heat-insulating gas both in the casing tubes and also in the gas feed conduit is far below atmospheric pressure (for example of the order of magnitude of 0.05 bars)
  • both valves of each casing tube are in the form of non-return valves for the same reasons as above.
  • arranged in the interior of the receiver tube is at least one and preferably two temperature sensors with which the temperature of the absorber tube is measured at the feed flow and/or discharge flow end. That makes it possible on the one hand to detect the amount of heat introduced into the heat carrier medium in the receiver tube in question and on the other hand to recognize in good time an excessive rise in temperature to prevent overheating of the absorber tube.
  • the receiver tube it is further preferred to arrange in the interior of the receiver tube at least one hydrogen sensor, by means of which it is possible to detect if the hydrogen content reaches an excessively high value. That is important because an excessively high hydrogen content worsens the thermal insulation of the absorber tube. If a predeterminable limit value is exceeded here, then in the case of a receiver tube in which there should actually be a vacuum, it is possible to implement gas suction removal by means of the valve provided according to the invention. In the case of the receiver tubes filled with a gas which is a poor conductor of heat, gas flushing can be carried out by means of the two above-mentioned valves to eliminate the hydrogen which has diffused thereinto.
  • FIG. 1 shows a diagrammatic exploded perspective view of the essential components of a first embodiment of a receiver tube according to the invention for a solar trough collector
  • FIG. 2 shows the receiver tube of FIG. 1 in the partly assembled condition, wherein the first case portion which is transmissive for the solar radiation is omitted for the sake of clarity,
  • FIG. 3 shows the receiver tube of FIGS. 1 and 2 in the completely assembled condition
  • FIG. 4 shows a view corresponding to FIG. 1 of a second embodiment
  • FIG. 5 shows the receiver tube of FIG. 4 in the partly assembled condition, wherein the first case portion which is transmissive for the solar radiation is omitted for the sake of clarity,
  • FIG. 6 shows the receiver tube of FIGS. 4 and 5 in the completely assembled condition
  • FIG. 7 shows a perspective view of a second case portion of a receiver tube according to the invention with fins which extend in the longitudinal direction and which project radially inwardly, of the same radial extent,
  • FIG. 8 shows a section perpendicularly to the longitudinal axis of the second case portion of FIG. 7 .
  • FIG. 9 shows a perspective view of a second case portion of a receiver tube according to the invention with fins which extend in the longitudinal direction and which project radially inwardly, of the differing radial extents,
  • FIG. 10 shows a section perpendicularly to the longitudinal axis of the second case portion of FIG. 9 .
  • FIG. 11 shows a perspective view of a short portion of a second case portion of a receiver tube according to the invention with structures of rectangular outline which are repeated in the longitudinal and transverse directions and which project radially inwardly,
  • FIG. 13 shows a perspective view of a short portion of a second case portion of a receiver tube according to the invention with structures of polygonal outline which are repeated in the longitudinal and transverse directions and which project radially inwardly,
  • FIG. 14 shows a section extending perpendicularly to the longitudinal axis of the second case portion of FIG. 13 .
  • FIG. 16 shows a plan view of the part of the case portion of FIG. 15 .
  • FIG. 17 shows a section extending perpendicularly to the longitudinal axis of the second case portion of FIG. 15 .
  • FIG. 18 shows a side view of the part of the case portion of FIG. 15 .
  • the absorber tube 2 is surrounded over its entire length by a casing tube which according to the invention comprises two case portions 4 , 5 which comprise different materials, extend over the entire length of the receiver tube 1 and are gas-tightly connected together along two generatrices for example by means of a heat-resistant silicone adhesive or in any other fashion. Together with two end walls 6 , 7 extending perpendicularly to the axis of the receiver tube 1 the two case portions 4 , 5 enclose in gas-tight relationship an internal space 8 , the volume of which is greater than the volume of the absorber tube 2 . To thermally insulate same, the internal space 8 of the casing tube is either evacuated or filled with a gas which forms a poor heat conductor and in particular transports little heat by convection.
  • the longitudinal axes of the casing tube and the absorber tube 2 extend parallel to each other and may but do not necessarily have to coincide; the latter is shown in the Figures.
  • the first case portion 4 which in the mounted condition of the receiver tube 1 is towards the trough collector comprises a material having a high degree of transparency for solar radiation, in particular glass.
  • the first case portion 4 is of a cross-section which is curved outwardly in the shape of a circular arc, that is to say convex. It may however be of any other shape, for example in the form of a flat plate or curved inwardly. In addition it may have optical structures which improve focusing of the solar radiation reflected by the trough collector.
  • the second case portion 5 comprises a material of high mechanical strength, for example metal, in particular high-quality steel.
  • the second case portion 5 is in that way in the form of a reflector which on its inside has a layer reflective for solar and/or heat radiation.
  • FIGS. 1 , 2 , 4 and 5 it has a smooth or structure-less inside surface of a shape (in particular being parabolic with a single axis) which is suitable for reflecting radiation which enters through the first case portion 4 into the internal space 8 of the casing tube and which is not directly incident on the absorber tube 2 back to same and for focusing it in order thereby to increase the efficiency of the receiver tube 1 .
  • each of the end walls 6 , 7 in the FIG. 1 embodiment has a bore 9 , 10 therethrough, in which a through-flow pipe connection 12 and 13 respectively is fitted by means of a thermally insulating sealing element (not shown) in such a way that it projects with a free end out of the gas-tightly closed receiver tube 1 while its end which is in the internal space 8 is connected by way of a compensating element 15 to the end theretowards of the absorber tube 2 .
  • the compensating element 15 which serves for compensation of thermally induced or other different changes in length which occur in operation, between the absorber tube 2 and the casing tube, can be for example in the form of a metal bellows and is advantageous in particular when the second case portion 5 and/or the end walls 6 , 7 are to be of such a small material thickness that they cannot readily carry the forces which occur upon the above-mentioned different changes in length.
  • both embodiments in the second case portion 5 have two bores 27 , 28 into which a respective valve 30 and 31 in the form of a non-return valve is gas-tightly fitted.
  • a respective valve 30 and 31 in the form of a non-return valve is gas-tightly fitted.
  • those valves 30 , 31 are connected to gas feed and suction removal conduits (not shown).
  • gas feed and suction removal conduits not shown.
  • Those fins which are formed in one piece with the second case portion 5 or are fixedly connected thereto and which can also have reflecting and in particular mirrored surfaces serve to deflect at least a considerable part of the light which is not focused onto the absorber tube 2 by the trough collectors (not shown) for example because of deviations from the ideal parabolic shape or because of imperfect orientation and which is therefore incident on the inside of the second case portion 5 , towards the absorber tube by single and/or multiple mirroring, in order thereby to achieve an additional contribution to heating of the absorber tube.
  • the radial dimensions of the fins or the radial heights with which they extend towards the absorber tube from the inside wall of the second case portion 5 can be the same ( FIGS. 7 and 8 ) or different from each other ( FIGS. 9 and 10 ).
  • the latter has the advantage that this involves reduced shadowing of the fins disposed closer to the apex 34 of the second case portion 5 , by the fins arranged more towards its edge regions 35 .
  • FIG. 11 shows a perspective view of a short part of a second case portion 5 which over its entire axial length on its concave inside has structures 33 which, in addition to the fins extending in the longitudinal direction in the embodiments shown in FIGS. 7 through 10 , include fins which extend in the peripheral direction and which also project upwardly in the radial direction above the inside surface of the second case portion 5 and which include approximately right angles with the fins extending in the longitudinal direction so that a multiplicity of cells of approximately rectangular and in particular square outline are formed.
  • FIGS. 11 and 12 all those fins are of the same radial extent or height but here, in a similar way to FIGS. 9 and 10 , a reduction in height towards the edge regions of the second case portion 5 is also possible.
  • FIGS. 16 through 18 show the structures 33 resulting in deviations from the smooth surface of the second case portion 5 do not necessarily have to be raised, that is to say project towards the absorber tube 2 . Rather, they can also be formed by recesses in the surface of the second case portion 5 , which are directed radially outwardly, that is to say away from the absorber tube 2 , and which in the illustrated example are of an approximately circular outline. However other, for example oval, rectangular or polygonal outlines are also possible.
  • the essential consideration is that those structures which can be produced for example by a simple embossing operation contribute to improved concentration of the sunlight on the absorber tube.

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  • 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)
  • Optical Elements Other Than Lenses (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Pipeline Systems (AREA)
  • Thermal Insulation (AREA)
US13/142,739 2008-12-31 2009-12-31 Receiver pipe Abandoned US20120017887A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE102008063424.7 2008-12-31
DE102008063424 2008-12-31
DE102009017741A DE102009017741A1 (de) 2008-12-31 2009-04-16 Receiverrohr
DE102009017741.8 2009-04-16
PCT/DE2009/001820 WO2010075850A2 (fr) 2008-12-31 2009-12-31 Tube récepteur

Publications (1)

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US20120017887A1 true US20120017887A1 (en) 2012-01-26

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ID=42234747

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Application Number Title Priority Date Filing Date
US13/142,739 Abandoned US20120017887A1 (en) 2008-12-31 2009-12-31 Receiver pipe

Country Status (4)

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US (1) US20120017887A1 (fr)
EP (1) EP2430373B1 (fr)
DE (1) DE102009017741A1 (fr)
WO (1) WO2010075850A2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110180058A1 (en) * 2011-04-08 2011-07-28 Mackay Cameron R Solar air heating device
US20140130846A1 (en) * 2012-11-13 2014-05-15 Oh-Sung Kwon Electric power generation and heating system using solar energy
US20160169560A1 (en) * 2013-07-10 2016-06-16 Innovative Motion Gmbh Solar collector assembly
RU2623494C2 (ru) * 2012-12-28 2017-06-27 Юниверсити Оф Электроник Сайенс Энд Текнолоджи Оф Чайна Многопозиционное устройство переключения источника тока
US9915445B1 (en) 2015-01-21 2018-03-13 James M. Murphy Parabolic trough modules
ES2725975A1 (es) * 2018-03-28 2019-10-01 Vera Jose Carlos Cancho Procedimiento y dispositivo para reparar o mejorar tubos absorbedores de o para instalaciones termosolares
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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102589160B (zh) * 2012-03-06 2013-04-24 哈尔滨工业大学 圆柱与圆锥复合腔体式太阳能吸热器
DE102014006985B4 (de) * 2014-05-08 2017-02-02 Friedrich Grimm Parabolrinnenkollektor mit einem Sekundärkonzentrator und einem Empfängerelement

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US4106484A (en) * 1977-03-31 1978-08-15 Mega Analytical Research Services, Inc. Adjustable solar concentrator
US4133298A (en) * 1975-09-26 1979-01-09 Sanyo Electric Co., Ltd. Solar heat collecting apparatus
US4290418A (en) * 1979-06-25 1981-09-22 Alpha Solarco Inc. Solar collectors
US4350978A (en) * 1981-04-24 1982-09-21 Riccobono Paul J Humidity-sensitive broken panel alarm
US4359265A (en) * 1980-01-18 1982-11-16 University Patents, Inc. Controlled directional scattering cavity for tubular absorbers
US4708124A (en) * 1980-04-21 1987-11-24 Canadian Sun Systems Ltd. Control of hydrogen permeation especially in solar collectors
US5653222A (en) * 1996-01-25 1997-08-05 Newman; Michael D. Flat plate solar collector

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US4069812A (en) * 1976-12-20 1978-01-24 E-Systems, Inc. Solar concentrator and energy collection system
DE4430517C2 (de) * 1993-09-18 1997-01-09 Deutsche Forsch Luft Raumfahrt Rinnenkollektor
EP1008820A1 (fr) * 1998-12-07 2000-06-14 Max Roth Elément collecteur solaire
DE19926051A1 (de) * 1999-06-08 2000-10-12 Schott Glas Sonnenkollektor
DE10305428B4 (de) 2003-02-03 2007-08-09 Schott Ag Hüllrohr, Receiverrohr und Parabolrinnenkollektor
ES2280134B1 (es) * 2005-12-21 2008-08-01 Roland Gianasso Dispositivo de captacion de energia solar aplicable a cubiertas de teja, y procedimiento de montaje del mismo.

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Publication number Priority date Publication date Assignee Title
US4133298A (en) * 1975-09-26 1979-01-09 Sanyo Electric Co., Ltd. Solar heat collecting apparatus
US4106484A (en) * 1977-03-31 1978-08-15 Mega Analytical Research Services, Inc. Adjustable solar concentrator
US4290418A (en) * 1979-06-25 1981-09-22 Alpha Solarco Inc. Solar collectors
US4359265A (en) * 1980-01-18 1982-11-16 University Patents, Inc. Controlled directional scattering cavity for tubular absorbers
US4708124A (en) * 1980-04-21 1987-11-24 Canadian Sun Systems Ltd. Control of hydrogen permeation especially in solar collectors
US4350978A (en) * 1981-04-24 1982-09-21 Riccobono Paul J Humidity-sensitive broken panel alarm
US5653222A (en) * 1996-01-25 1997-08-05 Newman; Michael D. Flat plate solar collector

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110180058A1 (en) * 2011-04-08 2011-07-28 Mackay Cameron R Solar air heating device
US8863741B2 (en) * 2011-04-08 2014-10-21 Cameron R MacKay Solar air heating device
US20140130846A1 (en) * 2012-11-13 2014-05-15 Oh-Sung Kwon Electric power generation and heating system using solar energy
RU2623494C2 (ru) * 2012-12-28 2017-06-27 Юниверсити Оф Электроник Сайенс Энд Текнолоджи Оф Чайна Многопозиционное устройство переключения источника тока
US20160169560A1 (en) * 2013-07-10 2016-06-16 Innovative Motion Gmbh Solar collector assembly
US10514186B2 (en) * 2013-07-10 2019-12-24 Innovative Motion Gmbh Solar collector assembly
US9915445B1 (en) 2015-01-21 2018-03-13 James M. Murphy Parabolic trough modules
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
ES2725975A1 (es) * 2018-03-28 2019-10-01 Vera Jose Carlos Cancho Procedimiento y dispositivo para reparar o mejorar tubos absorbedores de o para instalaciones termosolares

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WO2010075850A2 (fr) 2010-07-08

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