WO2010119945A1 - Système de collecte de lumière solaire - Google Patents

Système de collecte de lumière solaire Download PDF

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Publication number
WO2010119945A1
WO2010119945A1 PCT/JP2010/056835 JP2010056835W WO2010119945A1 WO 2010119945 A1 WO2010119945 A1 WO 2010119945A1 JP 2010056835 W JP2010056835 W JP 2010056835W WO 2010119945 A1 WO2010119945 A1 WO 2010119945A1
Authority
WO
WIPO (PCT)
Prior art keywords
receiver
housing
opening
solar light
sunlight
Prior art date
Application number
PCT/JP2010/056835
Other languages
English (en)
Japanese (ja)
Inventor
勝重 中村
Original Assignee
三鷹光器株式会社
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 三鷹光器株式会社 filed Critical 三鷹光器株式会社
Priority to CN201080013097XA priority Critical patent/CN102362130A/zh
Priority to US13/259,697 priority patent/US20120012102A1/en
Priority to JP2011509360A priority patent/JPWO2010119945A1/ja
Publication of WO2010119945A1 publication Critical patent/WO2010119945A1/fr

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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
    • F24S80/40—Casings
    • 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
    • F24S2023/87—Reflectors layout
    • 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 relates to a solar light collecting system.
  • a solar condensing system in which a receiver is provided at the top of a tower standing on the ground and a plurality of heliostats for tracking the sun on the ground around the tower is known.
  • the heliostat reflects the sunlight toward the receiver while tracking the sun.
  • the sunlight reflected from the plurality of heliostats collects on the receiver, and the receiver becomes hot.
  • a heated fluid for example, molten salt
  • the present invention has been made paying attention to such a conventional technique, and provides a solar light collecting system capable of improving the thermal efficiency.
  • a solar light collecting system includes a receiver installed at a predetermined height, and is installed on the ground around the receiver to direct sunlight to the receiver. And a heliostat for reflecting light, wherein the receiver has an inverted container shape having an opening for introducing sunlight on the lower side, and surrounds a portion other than the opening of the receiver outside the receiver, and A housing for forming a space for a heated fluid is provided between the receiver and the receiver.
  • FIGS. 1 to 3 are views showing a first embodiment of the present invention.
  • Four struts 1 having a predetermined height (about 10 m) are erected at the center of the solar light collecting system according to this embodiment.
  • a plurality of heliostats 2 that reflect the sunlight L toward a single target P while tracking the sun T are installed.
  • the receiver 3 is supported on the top of the four columns 1.
  • the receiver 3 has an opening 4 on the lower side and has an inverted container shape (inverted bowl shape) that defines a predetermined internal space.
  • the receiver 3 is entirely made of a black carbon material, and the inner surface is covered with a silicon carbide film (SiC). Therefore, the color of the inner surface of the receiver 3 is black, and the absorption rate of sunlight L is extremely high.
  • the virtual target P of the heliostat 2 is located near the approximate center of the opening 4 of the receiver 3.
  • a cylindrical housing 5 having an upper surface is formed around the receiver 3.
  • the housing 5 is made of metal, and a mirror coating 6 is formed on the inner surface by painting.
  • the lower portion of the housing 5 and the receiver 3 are connected, and a space S through which air A as a heating fluid passes is defined between the housing 5 and the receiver 3.
  • a cylindrical smoke exhaust hole 7 is formed at the center of the upper surface of the housing 5.
  • the lower end of the smoke exhaust hole 7 passes through the top of the receiver 3, and connects the interior of the receiver 3 and the outer space of the housing 5.
  • the diameter of the smoke exhaust hole 7 is small and the smoke generated inside the receiver 3 can be discharged to the outside little by little, it is not enough to discharge a large amount of air inside the receiver 3 to the outside.
  • An inlet 8 for air A is formed at the lower part of the side surface of the housing 5, and an outlet 9 is formed at the upper part of the opposite position.
  • Sunlight L reflected by the heliostat 2 is introduced from the opening 4 into the receiver 3 having the above structure.
  • the sunlight L is once condensed on the target P and then hits the inner surface of the receiver 3 in a diffused state. Since the inner surface of the receiver 3 is black and the absorption rate of sunlight L is high, the receiver 3 becomes high temperature. Even if the receiver 3 is heated to a high temperature, the receiver 3 is made of a solid carbon material whose inner surface is covered with a silicon carbide film, so that it has excellent heat resistance and the receiver 3 is not damaged by heat.
  • the space S exists outside the receiver 3 that has become hot due to absorption of sunlight L, and air A as a heat medium flows there, so that the air A is heated in contact with the outer surface of the receiver 3. Air A is circulated from the outlet 9 to a place where heat is required.
  • the outside of the receiver 3 is covered with the housing 5, and the receiver 3 is not exposed to the outside air, and heat is not taken away by contact with the wind, so that the thermal efficiency is improved. Can do.
  • the receiver 3 Even though the receiver 3 is covered with the housing 5, the receiver 3 has an opening 4 on the lower side. Therefore, sunlight L reflected by the heliostat 2 is introduced into the receiver 3 from the opening 4, and the inner surface of the receiver 3 is introduced. Can reliably absorb sunlight.
  • the receiver 3 Since the receiver 3 has an inverted container shape having the opening 4 on the lower side, the air A heated inside the receiver 3 stays inside the receiver 3 and functions to maintain the high temperature of the receiver 3. In other words, since the heated air A is going to rise, if it has a reverse shape with the opening 4 on the upper side, the heated air A in the receiver 3 escapes as a rising air flow, and instead, cold air Since A enters the receiver 3, the receiver 3 is cooled, resulting in a decrease in thermal efficiency, but this is not the case in this embodiment.
  • the reflection surface by the mirror coating 6 is formed on the inner surface of the housing 5, the radiant heat from the receiver 3 that has become high temperature is reflected again to the receiver 3 side, and the radiation of heat from the receiver 3 can be prevented.
  • the entire receiver 3 may be made of a silicon carbide film (SiC).
  • the outer surface of the receiver 3 may be formed in an uneven shape.
  • FIG. 4 is a diagram showing a second embodiment of the present invention. This embodiment includes the same components as those in the first embodiment. Therefore, common constituent elements are denoted by common reference numerals, and redundant description is omitted.
  • the shape of the receiver 10 is a cylindrical shape having an upper surface similar to the housing 5. Since the receiver 10 has a cylindrical shape having an upper surface, the receiver 10 can be easily formed. Since the diameter of the opening 11 is larger than that of the previous embodiment, the component of the sunlight L that jumps to the outside due to reflection is slightly increased. However, the accuracy of collecting the sunlight L from the heliostat is increased by the size of the opening 11. Even if it drops, it can be taken into the opening 11. In addition, since the solid angle for which the opening 11 is desired from the incident position on the inner surface is reduced by increasing the height of the cylindrical shape of the receiver 10, the sunlight L scattered on the inner surface further goes to the inner space, The absorption efficiency of sunlight L improves.
  • FIG. 5 is a diagram showing a third embodiment of the present invention.
  • the present embodiment includes the same components as in the previous embodiment. Therefore, common constituent elements are denoted by common reference numerals, and redundant description is omitted.
  • the receiver 12 is formed integrally with the housing 13 .
  • the housing 13 is divided into an upper member 14 and a lower member 15, which are welded to each other by peripheral flanges 14f and 15f.
  • the receiver 12 has an inverted container shape with a narrow opening 16 and is integrally molded from the bottom surface of the lower member 15 with the same material.
  • the smoke exhaust hole 7 is formed from the upper member 14 and is welded in a state of penetrating the upper part of the receiver 12.
  • water W is allowed to flow as a heating fluid. While the water W is introduced from the inlet 8 and passes through the space S, the water W is heated in contact with the receiver 12 and becomes hot water W and is taken out from the outlet 9.
  • the receiver 12 is integrally formed from a part of the housing 13, there is no gap between them, which is suitable when a liquid such as water W is flowed as a heating fluid.
  • the water W is taken as an example of the heating fluid, but a liquid such as oil may be used. Moreover, you may give the black coating which has heat resistance on the inner surface of the receiver 12. FIG.
  • the outside of the receiver is covered with the housing, the receiver is not exposed to the outside air, and heat is not taken away by contact with the wind. it can. Even if the receiver is covered with a housing, the receiver has an opening on the lower side, so sunlight reflected by the heliostat is introduced into the receiver through the opening, and the receiver's inner surface reliably receives sunlight be able to. Since a heating fluid space is formed between the receiver and the housing, when the heating fluid is introduced into the space, the heating fluid is heated in contact with the outer surface of the receiver. Furthermore, since the receiver has an inverted container shape having an opening on the lower side, the air heated inside the receiver stays inside the receiver and serves to maintain the high temperature of the receiver.
  • the opening diameter of the receiver is smaller than the inner diameter and the solid angle is small, even if sunlight introduced into the receiver is reflected by the inner surface of the receiver, There are few ingredients to go to.
  • the receiver is made of solid silicon carbide or a solid carbon material whose entire surface is covered with a silicon carbide film, the inner surface of the receiver is black in the silicon carbide film, and the absorption rate of sunlight is high.
  • the receiver is formed at least on the surface with a silicon carbide film, it has excellent heat resistance.
  • the mirror coating is formed on the inner surface of the housing, when the heated fluid is a transparent gas such as air, the radiant heat from the receiver that has become hot is reflected again to the receiver side, and the heat from the receiver is emitted. Can be prevented.
  • the receiver is integrally formed from a part of the housing, there is no gap between them, which is suitable for flowing a liquid as a heating fluid.

Abstract

Selon l'invention, étant donné que le côté extérieur d'un récepteur (3) est recouvert par un logement (5) et que le récepteur (3) n'est pas exposé à l'air extérieur et que la chaleur n'est pas captée en raison du contact avec le vent, le rendement thermique peut être amélioré. Étant donné que le récepteur (3) comporte une ouverture (4) sur le côté inférieur, le récepteur (3) peut introduire de la lumière solaire (L) réfléchie au moyen d'un héliostat (2) dans le récepteur depuis l'ouverture (4) même quand le côté extérieur est recouvert par le logement (5) et peut, de manière fiable, recevoir la lumière solaire sur la surface intérieure du récepteur (3).
PCT/JP2010/056835 2009-04-16 2010-04-16 Système de collecte de lumière solaire WO2010119945A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201080013097XA CN102362130A (zh) 2009-04-16 2010-04-16 太阳光聚光系统
US13/259,697 US20120012102A1 (en) 2009-04-16 2010-04-16 Solar power concentrating system
JP2011509360A JPWO2010119945A1 (ja) 2009-04-16 2010-04-16 太陽光集光システム

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009099980 2009-04-16
JP2009-099980 2009-04-16

Publications (1)

Publication Number Publication Date
WO2010119945A1 true WO2010119945A1 (fr) 2010-10-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/056835 WO2010119945A1 (fr) 2009-04-16 2010-04-16 Système de collecte de lumière solaire

Country Status (4)

Country Link
US (1) US20120012102A1 (fr)
JP (1) JPWO2010119945A1 (fr)
CN (1) CN102362130A (fr)
WO (1) WO2010119945A1 (fr)

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WO2012090651A1 (fr) * 2010-12-28 2012-07-05 三菱重工業株式会社 Collecteur de chaleur à photo-concentration de lumière solaire et système de collecte de chaleur à photo-concentration de lumière solaire
JP2013068392A (ja) * 2011-09-26 2013-04-18 Jfe Steel Corp 太陽光集熱管およびそれを用いた太陽光集熱器
CN103392100A (zh) * 2010-12-06 2013-11-13 阿尔斯通技术有限公司 改进的太阳能接收器

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GB2501836B (en) * 2011-03-09 2014-08-06 Canon Kk Video encoding
EP2834574B1 (fr) * 2012-01-05 2020-08-26 Norwich Technologies, Inc. Récepteur solaire linéaire pour système d'énergie solaire à concentration
CN102798968A (zh) * 2012-08-07 2012-11-28 中国科学技术大学 一种分段式槽式太阳能聚光器
WO2014026703A1 (fr) * 2012-08-17 2014-02-20 Solar Tower Technologies Ag Récepteur solaire à champ d'héliostats
JP2015124928A (ja) 2013-12-26 2015-07-06 三鷹光器株式会社 マルチミラー型のヘリオスタット
DE102014005530B3 (de) * 2014-04-16 2015-08-06 Solar Tower Technologies Ag Receiveranordnung eines Turm-Solarkraftwerks

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Also Published As

Publication number Publication date
CN102362130A (zh) 2012-02-22
JPWO2010119945A1 (ja) 2012-10-22
US20120012102A1 (en) 2012-01-19

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