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WO1997011321A1 - Capteur solaire - Google Patents

Capteur solaire Download PDF

Info

Publication number
WO1997011321A1
WO1997011321A1 PCT/IL1996/000116 IL9600116W WO9711321A1 WO 1997011321 A1 WO1997011321 A1 WO 1997011321A1 IL 9600116 W IL9600116 W IL 9600116W WO 9711321 A1 WO9711321 A1 WO 9711321A1
Authority
WO
WIPO (PCT)
Prior art keywords
solar receiver
solar
receiver according
recesses
housing
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.)
Ceased
Application number
PCT/IL1996/000116
Other languages
English (en)
Inventor
Avi Kribus
Jacob Karni
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.)
Yeda Research and Development Co Ltd
Original Assignee
Yeda Research and Development Co Ltd
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 Yeda Research and Development Co Ltd filed Critical Yeda Research and Development Co Ltd
Priority to AU69991/96A priority Critical patent/AU6999196A/en
Publication of WO1997011321A1 publication Critical patent/WO1997011321A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F24S20/20—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
    • F24S70/00—Details of absorbing elements
    • F24S70/60—Details of absorbing elements characterised by the structure or construction
    • 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
    • F24S2023/88—Multi reflective traps
    • 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

Definitions

  • the invention relates to a solar receiver for absorbing high-flux concentrated solar radiation and transferring the absorbed energy to a working fluid as high-temperature heat.
  • the invention is particularly applicable to central solar receivers.
  • the working fluid has to be held separated from the ambient and is heated up either directly or indirectly.
  • the working fluid flows through a fully or partly transparent chamber and is heated up by direct irradiation.
  • the working fluid flows through a non- transparent housing having a heat-conducting wall which is heated up by the incident solar radiation and transfers its heat to the working fluid by indirect heat exchange.
  • the present invention is concerned with solar receivers of the second type.
  • Such indirect-absorption type solar receivers also known as non-volumetric solar receivers, comprise a housing for the throughflow of the working fluid which has a non-transparent front wall with an outer layer facing the incident solar radiation and an inner layer contacting the working fluid.
  • the front wall is capable of absorbing the incident solar radiation, of conducting the resulting heat to the interior and of transferring the conducted heat to the working fluid.
  • a solar receiver which operates at medium or high temperatures requires high energy flux.
  • a solar radiation receiver comprising a housing having an inner space for the throughflow of a working fluid, which housing is formed with a front wall having an outer layer capable of absorbing incident solar radiation and an inner layer capable of transferring heat to a working fluid in contact therewith, characterized by a plurality of recesses in said front wall, which recesses have side walls reaching into said inner space and being so oriented as to essentially face the incident solar radiation.
  • front wall signifies the wall that confronts the incident solar radiation and does not necessarily relate to the structure of the receiver.
  • the radiation-wise front wall is the structure -wise inner wall.
  • the recesses in the front wall of a solar receiver housing according to the present invention act as solar radiation traps in that any radiation reflected from one side wall portion of a recess, is redirected to another side wall portion so that reflection losses are negligible and the effective abso ⁇ tion of the radiation by the front wall is thus significantly increased. Due to the above recessed design of the front wall, its area is increased whereby the local energy flux which the front wall has to transfer and the temperature gradient across the wall are reduced.
  • the contact area between the inner layer and the working fluid in the inner space is also significantly increased, whereby the heat transfer from the inner layer of the front wall to the working fluid is significantly improved.
  • the recesses may, for example, be in the form of relatively narrow cylindrical, conical or frusto-conical cavities; in the form of elongated grooves having, for example, a rectangular or V-shaped cross- sectional shape; and may quite generally have any geometry suitable for ensuring that no significant amount of radiation entering a recess is rejected.
  • the front wall of a receiver according to the invention may have a variety of differently shaped recesses, with the geometry of the recesses, their orientation and mutual arrangement being selected in accordance with the characteristics and directional distribution of the incident radiation.
  • the recesses By proper design of the recesses, it is possible to achieve that each recess behaves nearly like a black absorber.
  • the recesses are arranged in staggered rows.
  • the front wall of the housing or only the recesses thereof may be processed, e.g. coated, to improve the radiation abso ⁇ tion capacity.
  • the front wall of the solar receiver housing may be substantially flat, e.g. when the housing is of a planar shape, or it may be curved, e.g. concave.
  • a preferred embodiment of the present invention is a central solar receiver designed to receive concentrated solar radiation.
  • the working fluid may be circulated by pumping or may take place by spontaneous convection.
  • Fig. 1 is a schematic, perspective cutaway view of a solar receiver according to one embodiment of the present invention
  • Fig. 2 is a schematic, perspective cutaway view of a solar receiver according to another embodiment of the present invention.
  • Figs. 3a, 3b and 3c illustrate alternative shapes of recesses formed in a front face of a solar receiver of the present invention.
  • Fig. 1 illustrates a solar receiver for concentrated solar radiation according to one embodiment of the present invention.
  • the solar receiver comprises a substantially flat solar receiver housing 1 having a front wall 2 and rear and side walls 3 and 4 preferably lined from within with an insulation layer (not shown) to prevent heat losses therefrom.
  • Walls 2, 3 and 4 define an inner space for the throughflow of working fluid which ingresses into the housing 1 through inlet conduit 5 and egresses therefrom through outlet conduit 6.
  • the front wall 2 is preferably made of a material with high thermal conductivity. It has an outer layer 7 adapted for the abso ⁇ tion of incident concentrated solar radiation R and an inner layer 8 contacting with the working fluid. As seen, the front wall 2 is formed with a plurality of recesses 9 in the form of conical cavities whose side walls 9' reach into the inner space of housing 1 forming therein an array of pin-like heat exchanger elements. The recesses 9 open into the outer layer of front wall 2 and are so oriented as to essentially face the incident solar radiation R.
  • Fig. 2 illustrates a solar receiver for concentrated solar radiation according to another embodiment of the present invention.
  • this solar receiver comprises a frusto-conical, tubular receiver housing 11 having a heat-conducting front wall 12, a back wall 13 and annular end walls which together define the housing's inner space.
  • the back and end walls of the housing are preferably lined from within with an insulation layer (not shown).
  • the front wall 12 encloses a centrally disposed conical cavity 11' whose large diameter end Ila constitutes an aperture for the entry of incident concentrated solar radiation R and whose small diameter end l ib is fitted with a reflector 10.
  • Housing 11 is fitted with inlet and outlet conduits 15 and 16 for the ingress and egress of a working fluid into and from the housing's inner space.
  • the front wall 12 of the housing 11 has an outer layer 17 adapted for the abso ⁇ tion of the incident concentrated solar radiation R penetrating through the inlet aperture I la, and an inner layer 18 contacting the working fluid.
  • the front wall 12 is formed with a plurality of recesses 19 having in the form of cylindrical cavities whose side walls 19' reach into the housing's inner space.
  • the recesses 19 are preferably arranged in staggered rows or circles and oriented to essentially face the incident radiation R.
  • the incident solar radiation R impinges the outer layer 7, 17 of the front wall 2, 12 of the solar receiver housing 1, 11, penetrating into the recesses 9, 19 thereof.
  • the absorbed radiation converts into heat which is conducted from the outer layer 7, 17 across front wall 2, 12 to the inner layer 8, 18.
  • Working fluid ingresses the solar receiver housing 1, 11 gaining heat from the inner layer 8, 18 of the front wall 2, 12, and the heated working fluid egresses through the outlet conduit 6, 16.
  • any radiation which reaches the small diameter end lib of the central cavity 11' is reflected by the reflector 10 towards the front wall 12.
  • the working fluid may be pumped through the inner space of the solar receiver housing 1, 11 by a suitable pump or compressor, or may circulate by spontaneous convection.
  • the solar receiver according to the present invention may have features different from those described in the embodiments specifically described herein.
  • alternative shapes of recesses formed in the front surface of the solar receiver are shown in Figs. 3a, 3b and 3c.
  • the front wall of the solar receiver housing or only the recesses thereof may be suitably finished, e.g. coated, so as to improve the radiation abso ⁇ tion capacity.

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)
  • Photovoltaic Devices (AREA)

Abstract

Capteur solaire dans lequel la chaleur générée par le rayonnement solaire absorbé est transférée à un fluide actif circulant à l'intérieur d'un châssis (1). La paroi (2) de ce dernier qui est exposée au rayonnement solaire incident comporte une pluralité d'évidements (9) s'enfonçant à l'intérieur du châssis, dont le but est de servir de pièges solaires de façon à réduire les pertes de rayonnement dues à la réflexion.
PCT/IL1996/000116 1995-09-21 1996-09-19 Capteur solaire Ceased WO1997011321A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU69991/96A AU6999196A (en) 1995-09-21 1996-09-19 Solar receiver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL11537595A IL115375A0 (en) 1995-09-21 1995-09-21 Solar receiver
IL115375 1995-09-21

Publications (1)

Publication Number Publication Date
WO1997011321A1 true WO1997011321A1 (fr) 1997-03-27

Family

ID=11068010

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL1996/000116 Ceased WO1997011321A1 (fr) 1995-09-21 1996-09-19 Capteur solaire

Country Status (3)

Country Link
AU (1) AU6999196A (fr)
IL (1) IL115375A0 (fr)
WO (1) WO1997011321A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001061254A1 (fr) * 2000-02-19 2001-08-23 Deutsches Zentrum für Luft- und Raumfahrt e.V. Absorbeur solaire haute temperature
EP1243872A3 (fr) * 2001-03-21 2003-12-03 Deutsches Zentrum für Luft- und Raumfahrt e.V. Récepteur solaire
ES2222838A1 (es) * 2002-08-29 2005-02-01 Deutsches Zentrum Fuer Luft-Und Raumfahrt E.V. Receptor de radiacion solar para central termica solar.
WO2011045086A1 (fr) * 2009-10-12 2011-04-21 Kout.Cz Gmbh Dispositif convertisseur d'énergie pour une utilisation comme collecteur solaire ou comme corps de chauffage
WO2012055426A1 (fr) * 2010-10-28 2012-05-03 Sun To Market Solution, S.L. Récepteur solaire pour tour solaire
US20130291541A1 (en) * 2010-12-06 2013-11-07 Alstom Technology Ltd. Solar receiver
EP2472111A4 (fr) * 2009-08-24 2014-06-11 Tokyo Inst Tech Système de condensation de la lumière solaire
US8960184B2 (en) 2008-08-31 2015-02-24 Yeda Research And Development Co. Ltd. Solar receiver system
CN104428606A (zh) * 2012-03-01 2015-03-18 阿本戈太阳能新技术公司 基于面板的太阳能接收器
US9726155B2 (en) 2010-09-16 2017-08-08 Wilson Solarpower Corporation Concentrated solar power generation using solar receivers
WO2018157089A1 (fr) 2017-02-24 2018-08-30 The Administrators Of The Tulane Educational Fund Système photovoltaïque et photothermique solaire concentré
US10876521B2 (en) 2012-03-21 2020-12-29 247Solar Inc. Multi-thermal storage unit systems, fluid flow control devices, and low pressure solar receivers for solar power systems, and related components and uses thereof
US11909352B2 (en) 2016-03-28 2024-02-20 The Administrators Of The Tulane Educational Fund Transmissive concentrated photovoltaic module with cooling system
US12305888B2 (en) 2020-04-02 2025-05-20 247Solar Inc. Concentrated solar energy collection, thermal storage, and power generation systems and methods with optional supplemental fuel production

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1661473A (en) * 1924-06-10 1928-03-06 Robert H Goddard Accumulator for radiant energy
FR2318394A1 (fr) * 1975-07-18 1977-02-11 Chaudronnerie Entr Indle Chaudiere solaire
US4106479A (en) * 1976-08-06 1978-08-15 Ramona Rogers Solar heat collector
US4141338A (en) * 1975-08-18 1979-02-27 Lof George O G Solar heat absorber
US4221209A (en) * 1978-04-24 1980-09-09 Thorne Nathan J Solar heat exchange panel
FR2482269A2 (fr) * 1980-05-06 1981-11-13 Anvar Recepteur solaire perfectionne a haute temperature

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1661473A (en) * 1924-06-10 1928-03-06 Robert H Goddard Accumulator for radiant energy
FR2318394A1 (fr) * 1975-07-18 1977-02-11 Chaudronnerie Entr Indle Chaudiere solaire
US4141338A (en) * 1975-08-18 1979-02-27 Lof George O G Solar heat absorber
US4106479A (en) * 1976-08-06 1978-08-15 Ramona Rogers Solar heat collector
US4221209A (en) * 1978-04-24 1980-09-09 Thorne Nathan J Solar heat exchange panel
FR2482269A2 (fr) * 1980-05-06 1981-11-13 Anvar Recepteur solaire perfectionne a haute temperature

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001061254A1 (fr) * 2000-02-19 2001-08-23 Deutsches Zentrum für Luft- und Raumfahrt e.V. Absorbeur solaire haute temperature
EP1243872A3 (fr) * 2001-03-21 2003-12-03 Deutsches Zentrum für Luft- und Raumfahrt e.V. Récepteur solaire
ES2222838A1 (es) * 2002-08-29 2005-02-01 Deutsches Zentrum Fuer Luft-Und Raumfahrt E.V. Receptor de radiacion solar para central termica solar.
ES2222838B2 (es) * 2002-08-29 2006-05-16 Deutsches Zentrum Fuer Luft-Und Raumfahrt E.V. Receptor de radiacion solar para central termica solar.
US8960184B2 (en) 2008-08-31 2015-02-24 Yeda Research And Development Co. Ltd. Solar receiver system
EP2472111A4 (fr) * 2009-08-24 2014-06-11 Tokyo Inst Tech Système de condensation de la lumière solaire
WO2011045086A1 (fr) * 2009-10-12 2011-04-21 Kout.Cz Gmbh Dispositif convertisseur d'énergie pour une utilisation comme collecteur solaire ou comme corps de chauffage
US10280903B2 (en) 2010-09-16 2019-05-07 Wilson 247Solar, Inc. Concentrated solar power generation using solar receivers
US11242843B2 (en) 2010-09-16 2022-02-08 247Solar Inc. Concentrated solar power generation using solar receivers
US9726155B2 (en) 2010-09-16 2017-08-08 Wilson Solarpower Corporation Concentrated solar power generation using solar receivers
WO2012055426A1 (fr) * 2010-10-28 2012-05-03 Sun To Market Solution, S.L. Récepteur solaire pour tour solaire
US20130291541A1 (en) * 2010-12-06 2013-11-07 Alstom Technology Ltd. Solar receiver
EP2829820A4 (fr) * 2012-03-01 2015-09-02 Abengoa Solar New Tech Sa Récepteur solaire à plaques
CN104428606A (zh) * 2012-03-01 2015-03-18 阿本戈太阳能新技术公司 基于面板的太阳能接收器
US10876521B2 (en) 2012-03-21 2020-12-29 247Solar Inc. Multi-thermal storage unit systems, fluid flow control devices, and low pressure solar receivers for solar power systems, and related components and uses thereof
US11909352B2 (en) 2016-03-28 2024-02-20 The Administrators Of The Tulane Educational Fund Transmissive concentrated photovoltaic module with cooling system
WO2018157089A1 (fr) 2017-02-24 2018-08-30 The Administrators Of The Tulane Educational Fund Système photovoltaïque et photothermique solaire concentré
EP3586438A4 (fr) * 2017-02-24 2020-12-23 The Administrators of The Tulane Educational Fund Système photovoltaïque et photothermique solaire concentré
US11482967B2 (en) 2017-02-24 2022-10-25 The Administrators Of The Tulane Educational Fund Concentrated solar photovoltaic and photothermal system
US12305888B2 (en) 2020-04-02 2025-05-20 247Solar Inc. Concentrated solar energy collection, thermal storage, and power generation systems and methods with optional supplemental fuel production

Also Published As

Publication number Publication date
IL115375A0 (en) 1995-12-31
AU6999196A (en) 1997-04-09

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