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US20120125322A1 - Solar radiation receiver comprising a quartz window system for the closure of the receiver - Google Patents

Solar radiation receiver comprising a quartz window system for the closure of the receiver Download PDF

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Publication number
US20120125322A1
US20120125322A1 US13/322,404 US201013322404A US2012125322A1 US 20120125322 A1 US20120125322 A1 US 20120125322A1 US 201013322404 A US201013322404 A US 201013322404A US 2012125322 A1 US2012125322 A1 US 2012125322A1
Authority
US
United States
Prior art keywords
tubes
bars
solar radiation
generatrix
radiation receiver
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
US13/322,404
Inventor
Luis Pascual
Carlos Enrique Miravet
Eduardo Villarroel
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.)
Sener Ingenieria y Sistemas SA
Original Assignee
Sener Ingenieria y Sistemas SA
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 Sener Ingenieria y Sistemas SA filed Critical Sener Ingenieria y Sistemas SA
Assigned to SENER, INGENIERIA Y SISTEMAS, S.A. reassignment SENER, INGENIERIA Y SISTEMAS, S.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VILLARROEL, EDUARDO, MIRAVET, CARLOS ENRIQUE, PASCUAL, LUIS
Publication of US20120125322A1 publication Critical patent/US20120125322A1/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
    • 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
    • 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
    • F24S80/58—Elements for transmitting incoming solar rays and preventing outgoing heat radiation; Transparent coverings characterised by their mountings or fixing means
    • 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 present invention refers to a solar radiation receiver comprising a quartz window system for the closure and thermal insulation of the receiver hot cavity.
  • U.S. Pat. No. 4,421,102 discloses a number of quartz glass pipes disposed between a device for supplying a transparent gaseous medium and a device for exhausting the heated medium.
  • a quartz glass pipe Within each quartz glass pipe a number of glass strips, running parallel to one another, are accommodated. The adjacent glass strips are held by spacers at a distance which corresponds to the thickness of the glass strips.
  • the glass strips are lightly tinted so that they absorb the incident radiation only partially. The coefficient of absorption of the glass strips amounts to about 0.1, so that about 90% of the incident solar radiation exits from the glass strips again and falls upon a further glass strip.
  • This apparatus is particularly suitable for being disposed in a tower of a solar power plant in which the solar rays are directed at the top of the tower by means of a plurality of reflectors disposed on the ground.
  • An aspect of the invention refers to solar radiation receiver comprising a a quartz window system for the closure of the receiver such as the one defined in the set of claims.
  • FIG. 1 is a diagram of a crosss section of the invention.
  • sealing means ( 1 A) which can be made of glass fiber, since it is a material more elastic than glass, having a cross section selected between a substantially eight shape and convex lens, the sealing means ( 1 A) being located between every two tubes/bars ( 1 M, 1 E);
  • the sealing means ( 1 A) comprise a first auxiliary generatrix ( 1 A 1 ) in a throat of the cross section;
  • the intermediate tubes/bars ( 1 M) comprise a first intermediate generatrix ( 1 M 1 ) in contact with the first auxiliary generatrix ( 1 A 1 ), to form a union wall of the sealing means ( 1 A) with an intermediate tube/bar ( 1 M);
  • the end tubes/bars ( 1 E) comprise a first external generatrix ( 1 E 1 ) in contact with the first auxiliary generatrix ( 1 A 1 ), to form a union wall of the sealing means ( 1 A) with an end tube/bar ( 1 E);
  • the end tubes/bars ( 1 E) comprise a second external generatrix ( 1 E 2 ) arranged to contact in an gastight way an edge of the opening to form a union wall of an end tube/bar ( 1 E) with the edge of the opening;
  • the tubes/bars ( 1 M, 1 E) have a cross section selected between circular and polygonal.
  • the tubes ( 1 M, 1 E) have an open cross section, that is, with the shape of a sector instead of a closed geometrical figure, to reduce the number of surfaces to be crossed by solar radiation.
  • the system is planned to work at operation temperatures between room temperature at the outer face and up to 1500K at the inner face.
  • the tubes/bars ( 1 M, 1 E) have a geometry and dimensions arranged to withstand the pressure difference between the inner face and the outer face.
  • the tubes/bars ( 1 M, 1 E) have a structure with a shape selected between arch and plane arranged to absorb dilatations without loosing gas sealing.
  • the solar radiation receiver also comprises a flat glass pane or panel ( 2 ) enveloping the inner face arranged to cover the opening where:
  • the flat glass pane or panel ( 2 ) comprises an inner surface ( 21 ) oriented to the receiver cavity and an outer surface ( 2 E) oriented to the inner face of the sheet;
  • the intermediate tubes/bars ( 1 M) comprise a second intermediate generatrix ( 1 M 2 ) in contact with the outer surface ( 2 E), to form a union wall of the flat glass pane or panel ( 2 ) with an intermediate tube/bar ( 1 M).
  • the flat glass pane or panel ( 2 ) rests on the intermediate tubes/bars ( 1 M) to reduce possible mechanical strain in the flat glass pane or panel. It is held fast by the inner pressure in the receiver cavity.
  • the sealing means ( 1 A) are arranged to be pushed against the tubes/bars ( 1 E, 1 M) by a pressure difference between the inner face and the outer face, the geometry of the sealing means ( 1 A) adapting itself to favour contact between the sealing means ( 1 A) and the tubes/bars ( 1 E, 1 M), and thus reducing possible gas leaks.
  • the system also comprises refrigeration means ( 1 ER, 1 MR) to refrigerate the tubes/bars ( 1 E, 1 M) through gas flow in the interior and/or exterior of the tubes/bars ( 1 E, 1 M).
  • refrigeration means 1 ER, 1 MR
  • the tubes/bars ( 1 E, 1 M) are covered, at least in part, by an antireflective layer ( 1 RX) and/or dichroic filter ( 1 D) at different wavelengths.
  • the tubes/bars ( 1 E, 1 M) are covered, at least in part, by a refractive layer ( 1 RF) arranged to refract the solar rays in a desired direction, regardless of the behaviour of the quartz window.
  • a refractive layer 1 RF

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)
  • Securing Of Glass Panes Or The Like (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

A solar radiation receiver includes a quartz window system for the closure of the receiver having intermediate tubes/bars (1M) and end tubes/bars (1E) arranged in parallel forming a sheet contiguously to close an opening in a delimiting surface of the solar receiver and a seal (1A) which has a cross section with the shape of an eight or convex lens, being the seal (1A) located between every two tubes/bars (1M, 1E). The seal (1A) having a first auxiliary generatrix (1A1) in a throat of the cross section. The intermediate tubes/bars (1M) and the end tubes/bars (1E) include respectively a first intermediate (1M1) and an end generatrix (1E1) in contact with the first auxiliary generatrix (1A1), forming a union wall of the seal (1A) with an intermediate tube/bar (1M) and an end tube/bar (1E). The end tubes/bars (1E) include a second external generatrix (1E2) contacting an edge of the opening forming a union wall of the end tube/bar (1E) with the edge of the opening.

Description

    FIELD OF THE INVENTION
  • The present invention refers to a solar radiation receiver comprising a quartz window system for the closure and thermal insulation of the receiver hot cavity.
    • BACKGROUND OF THE INVENTION
  • U.S. Pat. No. 4,421,102 discloses a number of quartz glass pipes disposed between a device for supplying a transparent gaseous medium and a device for exhausting the heated medium. Within each quartz glass pipe a number of glass strips, running parallel to one another, are accommodated. The adjacent glass strips are held by spacers at a distance which corresponds to the thickness of the glass strips. The glass strips are lightly tinted so that they absorb the incident radiation only partially. The coefficient of absorption of the glass strips amounts to about 0.1, so that about 90% of the incident solar radiation exits from the glass strips again and falls upon a further glass strip. In this way, the insolated energy is distributed over the entirety of the regions of the glass strips, so that all locations of the glass strips are heated evenly, and no location of the glass strips is overheated. The heat in the glass strips is transmitted to the gaseous medium flowing through inside the glass pipes and between the glass strips and is exhausted. This apparatus is particularly suitable for being disposed in a tower of a solar power plant in which the solar rays are directed at the top of the tower by means of a plurality of reflectors disposed on the ground.
    • DESCRIPTION OF THE INVENTION
  • An aspect of the invention refers to solar radiation receiver comprising a a quartz window system for the closure of the receiver such as the one defined in the set of claims.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The following is a brief description of a series of drawings which will help understand the invention better relating clearly to an embodiment of said invention which is presented as a non-limiting example thereof.
  • FIG. 1 is a diagram of a crosss section of the invention.
    •  DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION
  • An embodiment of the invention refers to a solar radiation receiver comprising a quartz window system for the closure of the receiver characterized in that the quartz window system comprises:
  • 1a) a plurality of intermediate tubes/bars (1M) and a plurality of end tubes/bars (1E) having a prismatic or cylindrical shape (the tubes offer more resistance with less weight) arranged:
      • 1a1) in parallel, forming a sheet with an inner face and an outer face;
      • 1a2) contiguously, to form a resistant structure of the sheet and to close an opening in a delimiting surface of the solar receiver;
  • 1b) sealing means (1A) which can be made of glass fiber, since it is a material more elastic than glass, having a cross section selected between a substantially eight shape and convex lens, the sealing means (1A) being located between every two tubes/bars (1M, 1E);
  • wherein:
  • 1c) the sealing means (1A) comprise a first auxiliary generatrix (1A1) in a throat of the cross section;
  • 1d) the intermediate tubes/bars (1M) comprise a first intermediate generatrix (1M1) in contact with the first auxiliary generatrix (1A1), to form a union wall of the sealing means (1A) with an intermediate tube/bar (1M);
  • 1e) the end tubes/bars (1E) comprise a first external generatrix (1E1) in contact with the first auxiliary generatrix (1A1), to form a union wall of the sealing means (1A) with an end tube/bar (1E);
  • 1f) the end tubes/bars (1 E) comprise a second external generatrix (1E2) arranged to contact in an gastight way an edge of the opening to form a union wall of an end tube/bar (1E) with the edge of the opening;
  • forming the assembly a closure or sealing system.
  • According to other characteristics of the invention:
  • The tubes/bars (1M, 1E) have a cross section selected between circular and polygonal.
  • The tubes (1M, 1E) have an open cross section, that is, with the shape of a sector instead of a closed geometrical figure, to reduce the number of surfaces to be crossed by solar radiation. The system is planned to work at operation temperatures between room temperature at the outer face and up to 1500K at the inner face.
  • The tubes/bars (1M, 1E) have a geometry and dimensions arranged to withstand the pressure difference between the inner face and the outer face.
  • The tubes/bars (1M, 1E) have a structure with a shape selected between arch and plane arranged to absorb dilatations without loosing gas sealing.
  • The solar radiation receiver also comprises a flat glass pane or panel (2) enveloping the inner face arranged to cover the opening where:
  • 6a) the flat glass pane or panel (2) comprises an inner surface (21) oriented to the receiver cavity and an outer surface (2E) oriented to the inner face of the sheet;
  • 6b) the intermediate tubes/bars (1M) comprise a second intermediate generatrix (1M2) in contact with the outer surface (2E), to form a union wall of the flat glass pane or panel (2) with an intermediate tube/bar (1M).
  • The flat glass pane or panel (2) rests on the intermediate tubes/bars (1M) to reduce possible mechanical strain in the flat glass pane or panel. It is held fast by the inner pressure in the receiver cavity.
  • The sealing means (1A) are arranged to be pushed against the tubes/bars (1E, 1M) by a pressure difference between the inner face and the outer face, the geometry of the sealing means (1A) adapting itself to favour contact between the sealing means (1A) and the tubes/bars (1E, 1M), and thus reducing possible gas leaks.
  • The system also comprises refrigeration means (1ER, 1MR) to refrigerate the tubes/bars (1E, 1M) through gas flow in the interior and/or exterior of the tubes/bars (1E, 1M).
  • The tubes/bars (1E, 1M) are covered, at least in part, by an antireflective layer (1RX) and/or dichroic filter (1D) at different wavelengths.
  • The tubes/bars (1E, 1M) are covered, at least in part, by a refractive layer (1RF) arranged to refract the solar rays in a desired direction, regardless of the behaviour of the quartz window.

Claims (10)

1. A solar radiation receiver comprising a quartz window system for the closure of the receiver, the quartz window system comprises:
a plurality of intermediate tubes/bars and a plurality of end tubes/bars arranged:
in parallel forming a sheet with an inner face and an outer face;
contiguously to form a resistant structure of the sheet and to close an opening in a delimiting surface of the solar receiver;
sealing means having a cross section selected between a substantially eight shape and convex lens, the sealing means being located between every two tubes/bars;
wherein:
the sealing means comprise a first auxiliary generatrix in a throat of the cross section;
the intermediate tubes/bars comprise a first intermediate generatrix in contact with the first auxiliary generatrix, to form a union wall of the sealing means with an intermediate tube/bar;
the end tubes/bars comprise a first end generatrix in contact with the first auxiliary generatrix, to form a union wall of the sealing means with an end tube/bar (1E);
the end tubes/bars comprise a second end generatrix (1E2) arranged to contact an edge of the opening to form a union wall of the end tube/bar (1E) with the edge of the opening.
2. The solar radiation receiver according to claim 1, wherein the tubes/bars have a cross section selected between circular and polygonal.
3. The solar radiation receiver according to claim 1, wherein the tubes have an open cross section to reduce a number of surfaces to be crossed by solar radiation.
4. The solar radiation receiver according to claim 1, wherein the tubes/bars have a geometry and dimensions arranged to withstand the pressure difference between the inner face and the outer face.
5. The solar radiation receiver according to claim 1, wherein the tubes/bars have a structure with a shape selected between arch and plane arranged to absorb dilatations without losing gas sealing.
6. The solar radiation receiver according to claim 1, further comprising a flat glass pane enveloping the inner face arranged to cover the opening wherein:
the flat glass pane comprises an inner surface oriented to the receiver cavity and an outer surface oriented to the inner face of the sheet;
the intermediate tubes/bars comprise a second intermediate generatrix in contact with the outer surface, to form a union wall of the flat glass pane with an intermediate tube/bar.
7. The solar radiation receiver according to claim 1, wherein the sealing means are arranged to be pushed against the tubes/bars by a pressure difference between the inner face and the outer face, the geometry of the sealing means adapting to favor contact between the sealing means and the tubes/bars.
8. The solar radiation receiver according to claim 1, further comprising refrigeration means to refrigerate the tubes/bars through gas flow in the interior and/or exterior of the tubes/bars.
9. The solar radiation receiver according to claim 1, wherein the tubes/bars are covered, at least in part, by an antireflective layer or dichroic filter at different wavelengths.
10. The solar radiation receiver according to claim 1, wherein the tubes/bars are covered, at least in part, by a refractive layer arranged to refract the solar rays in a desired direction, regardless of behavior of the quartz window.
US13/322,404 2009-05-26 2010-05-26 Solar radiation receiver comprising a quartz window system for the closure of the receiver Abandoned US20120125322A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09380111.6 2009-05-26
EP09380111A EP2256429B1 (en) 2009-05-26 2009-05-26 Solar radiation receiver comprising a quartz window system
PCT/IB2010/001582 WO2010136903A2 (en) 2009-05-26 2010-05-26 Solar radiation receiver comprising a quartz window system for the closure of the receiver

Publications (1)

Publication Number Publication Date
US20120125322A1 true US20120125322A1 (en) 2012-05-24

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US13/322,404 Abandoned US20120125322A1 (en) 2009-05-26 2010-05-26 Solar radiation receiver comprising a quartz window system for the closure of the receiver

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US (1) US20120125322A1 (en)
EP (1) EP2256429B1 (en)
AT (1) ATE554351T1 (en)
ES (1) ES2386521T3 (en)
WO (1) WO2010136903A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156420A (en) * 1975-04-10 1979-05-29 Gunderson Charles F Solar heat collector
US20110030675A1 (en) * 2009-08-04 2011-02-10 Advanced Lab Group Cooperative Systems and methods of generating energy from solar radiation
US20120117986A1 (en) * 2010-11-15 2012-05-17 James Peter Hammond Solar collector and solar air conditioning system having the same
US8459250B2 (en) * 2008-10-03 2013-06-11 Ail Research Inc. Solar energy collection

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH636428A5 (en) * 1978-05-02 1983-05-31 Mario Posnansky METHOD AND DEVICE FOR HEATING A TRANSPARENT, GAS-SHAPED MEDIUM BY MEANS OF CONCENTRATED SUN RADIATION.
FR2478281A1 (en) * 1980-03-14 1981-09-18 Opthra Ste Civile Solar oven with selective radiation absorption - has internal shield preventing escape of internally reflected radiation
US4738310A (en) * 1985-08-26 1988-04-19 United Mcgill Corporation Heat exchanger
US7992553B2 (en) * 2004-02-17 2011-08-09 Areva Solar Pty Limited Multi-tube solar collector structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156420A (en) * 1975-04-10 1979-05-29 Gunderson Charles F Solar heat collector
US8459250B2 (en) * 2008-10-03 2013-06-11 Ail Research Inc. Solar energy collection
US20110030675A1 (en) * 2009-08-04 2011-02-10 Advanced Lab Group Cooperative Systems and methods of generating energy from solar radiation
US8307820B2 (en) * 2009-08-04 2012-11-13 Combined Power LLC Systems and methods of generating energy from solar radiation
US20120117986A1 (en) * 2010-11-15 2012-05-17 James Peter Hammond Solar collector and solar air conditioning system having the same

Also Published As

Publication number Publication date
EP2256429A1 (en) 2010-12-01
ES2386521T3 (en) 2012-08-22
WO2010136903A2 (en) 2010-12-02
ATE554351T1 (en) 2012-05-15
EP2256429B1 (en) 2012-04-18
WO2010136903A3 (en) 2011-01-20

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Date Code Title Description
AS Assignment

Owner name: SENER, INGENIERIA Y SISTEMAS, S.A., SPAIN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PASCUAL, LUIS;MIRAVET, CARLOS ENRIQUE;VILLARROEL, EDUARDO;SIGNING DATES FROM 20120123 TO 20120125;REEL/FRAME:027666/0583

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION