JP6023202B2 - 石英ガラス製窓を有する太陽放射受器および窓の製造方法 - Google Patents
石英ガラス製窓を有する太陽放射受器および窓の製造方法 Download PDFInfo
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims description 68
- 230000005855 radiation Effects 0.000 title claims description 42
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
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- 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
- F24S80/52—Elements for transmitting incoming solar rays and preventing outgoing heat radiation; Transparent coverings characterised by the material
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/09—Other methods of shaping glass by fusing powdered glass in a shaping mould
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/09—Other methods of shaping glass by fusing powdered glass in a shaping mould
- C03B19/095—Other methods of shaping glass by fusing powdered glass in a shaping mould by centrifuging, e.g. arc discharge in rotating mould
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
- C03B29/02—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a discontinuous way
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/06—Glass compositions containing silica with more than 90% silica by weight, e.g. quartz
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/08—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2201/00—Type of glass produced
- C03B2201/02—Pure silica glass, e.g. pure fused quartz
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2201/00—Type of glass produced
- C03B2201/02—Pure silica glass, e.g. pure fused quartz
- C03B2201/03—Impurity concentration specified
- C03B2201/04—Hydroxyl ion (OH)
-
- 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
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- 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
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- 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
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- Chemical Kinetics & Catalysis (AREA)
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Description
d>λ(Ti−Ta)/α(Ta−Tu) (1)
式中、
λ=透明石英ガラスの熱伝導係数、かつ
α=石英ガラス/対流中空気の熱伝達係数
(a)多孔性壁を有するドーム状溶融モールドを提供する工程と、
(b)SiO2顆粒を溶融モールド内に導入して、溶融モールドの内壁上に少なくとも12mmの厚さを有するドーム状SiO2粒子層を形成する工程と、
(c)窓のブランクを形成するために、プラズマの作用下で、かつ粒子層上の多孔性壁を介して外側から作用する負圧を適用することにより、SiO2粒子層を緻密化する工程と、
(d)窓のプリフォームを形成するために、ブランクの外側部分を機械的に除去する工程と、
(e)プリフォームを機械研磨または熱研磨して、透明石英ガラスの窓を得る工程と、
を含む方法により、本発明に従って達成される。
Claims (12)
- 熱吸収用の太陽放射吸収体に作動ガスを送るためのチャンバーを備えた太陽放射受器であって、前記吸収体が、前記チャンバー内に配置されかつ太陽放射のための石英ガラス製ドーム状窓(21)を有し、前記窓(21)が、前記吸収体の方向を向きかつ少なくとも950℃の公称内部温度Tiを有する内面(23)と、前記吸収体から離れる方向を向きかつ周囲温度Tuに曝露される外面(24)とを有し、前記窓(21)が、前記窓外面(24)の領域で850℃未満の温度Taが得られるようにTiおよびTuに対応して構成される壁厚dを有し、追加条件として、温度差Ti−Taが、少なくとも150℃であり、かつ内部温度Tiの最大の領域での壁厚dが、少なくとも7mmであり、前記窓(21)の壁厚dがドーム中心(25)の領域内で最大値を有することを特徴とする太陽放射受器。
- 前記窓(21)が、前記外面(24)の領域で800℃未満の温度Taが得られるようにTiおよびTuに対応して構成される壁厚dを有することを特徴とする請求項1に記載の太陽放射受器。
- 前記壁厚dが、最大内部温度Tiの領域で、少なくとも10mmであることを特徴とする請求項1または2に記載の太陽放射受器。
- 最大内部温度Tiの領域での壁厚dが、以下の寸法決定規則:
d>λ(Ti−Ta)/α(Ta−Tu) (1)
(式中、
λ=透明石英ガラスの熱伝導係数
α=石英ガラス/空気の熱伝達係数)
に基づいて構成されることを特徴とする請求項1〜3のいずれか一項に記載の太陽放射受器。 - 前記壁厚の最大値が、最小領域よりも少なくとも20%大きいことを特徴とする請求項1に記載の太陽放射受器。
- 前記窓(21)の石英ガラスが、100重量ppm未満の平均ヒドロキシル基含有量を有することを特徴とする請求項1〜5のいずれか一項に記載の太陽放射受器。
- 透明石英ガラス製ドーム状窓(21)の製造方法であって、以下の方法工程:
(a)多孔性壁を有するドーム状溶融モールド(1)を提供する工程と、
(b)SiO2顆粒を前記溶融モールド(1)内に導入して、前記溶融モールドの内壁上に少なくとも12mmの厚さを有するドーム状SiO2粒子層(6)を形成する工程と、
(c)前記窓(21)のブランク(16)を形成するために、プラズマ(10)の作用下で、かつ前記粒子層(6)上の前記多孔性壁を介して外側から作用する負圧を適用することにより、前記SiO2粒子層(6)を緻密化する工程と、
(d)前記窓(21)のプリフォーム(17)を形成するために、前記ブランク(16)の外側部分(14、15)を機械的に除去する工程と、
(e)前記プリフォーム(17)を機械研磨または熱研磨して、透明石英ガラス製窓(21)を得る工程と
を含み、
方法工程(c)による前記SiO 2 粒子層(6)の緻密化が、二段階プロセスを含み、第1のプロセス段階では、前記SiO 2 粒子層(6)の内側部分が緻密化され、かつ低い負圧が適用され、第2のプロセス段階では、より高い負圧が適用され、かつ前記SiO 2 粒子層(6)がさらに緻密化されることを特徴とする透明石英ガラス製ドーム状窓の製造方法。 - 前記SiO2粒子層が少なくとも20mmの厚さを有して製造されることを特徴とする請求項7に記載の方法。
- 方法工程(c)による前記SiO2粒子層(6)の緻密化中、ドーム中心領域(25)に最小壁厚領域よりも少なくとも20%大きい壁厚の最大値を有するドーム状ブランク(16)が形成されることを特徴とする請求項7または8に記載の方法。
- 前記ブランクの外側部分の機械的除去中、前記内面(23)に対応するドーム状外面(24)を有し、かつ少なくとも7mmの範囲内の最大壁厚を有するプリフォーム(17)が、作製されることを特徴とする請求項7〜9のいずれか一項に記載の方法。
- 前記透明石英ガラス製窓(21)を得るための前記プリフォーム(17)の研磨が、燃焼炎を有するバーナ(18)を利用して少なくとも1600℃の温度に加熱することにより行われることを特徴とする請求項7〜10のいずれか一項に記載の方法。
- ガス透過性壁がグラファイトで構成される溶融モールド(1)が使用され、かつ方法工程(c)による前記SiO2粒子層(6)の緻密化が、ヘリウムおよび/または水素を含有する雰囲気中で行われることを特徴とする請求項7〜11のいずれか一項に記載の方法。
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DE102011113130.6 | 2011-09-14 | ||
DE102011113130A DE102011113130B3 (de) | 2011-09-14 | 2011-09-14 | Solarstrahlungsempfänger mit einem Eintrittsfenster aus Quarzglas |
PCT/EP2012/067927 WO2013037877A1 (de) | 2011-09-14 | 2012-09-13 | Solarstrahlungsempfänger mit einem eintrittsfenster aus quarzglas sowie verfahren zur herstellung eines eintrittsfensters |
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US12062465B2 (en) * | 2022-08-19 | 2024-08-13 | Uchicago Argonne, Llc | System and method for bending crystal wafers for use in high resolution analyzers |
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US4095118A (en) * | 1976-11-26 | 1978-06-13 | Rathbun Kenneth R | Solar-mhd energy conversion system |
DE2842400A1 (de) * | 1978-09-29 | 1980-04-17 | Ibm Deutschland | Solarenergiekollektor mit linsenraster |
JPS58104034A (ja) | 1981-12-14 | 1983-06-21 | Sumitomo Electric Ind Ltd | 高強度の光フアイバの製造方法 |
DE4201944C2 (de) | 1991-01-24 | 2003-04-24 | Asahi Glass Co Ltd | Flüssigkeitsheizeinrichtung |
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US10024577B2 (en) | 2018-07-17 |
EP2756237A1 (de) | 2014-07-23 |
JP2014531567A (ja) | 2014-11-27 |
AU2012307424B2 (en) | 2015-11-12 |
CN103917831A (zh) | 2014-07-09 |
US20140360491A1 (en) | 2014-12-11 |
EP2756237B1 (de) | 2020-12-23 |
CN103917831B (zh) | 2017-03-08 |
ZA201401421B (en) | 2014-11-26 |
IL231355A0 (en) | 2014-04-30 |
DE102011113130B3 (de) | 2013-01-24 |
WO2013037877A1 (de) | 2013-03-21 |
AU2012307424A1 (en) | 2014-04-10 |
IL231355A (en) | 2017-11-30 |
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