JP2011033276A - Solar heat collecting structure - Google Patents

Solar heat collecting structure Download PDF

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Publication number
JP2011033276A
JP2011033276A JP2009180151A JP2009180151A JP2011033276A JP 2011033276 A JP2011033276 A JP 2011033276A JP 2009180151 A JP2009180151 A JP 2009180151A JP 2009180151 A JP2009180151 A JP 2009180151A JP 2011033276 A JP2011033276 A JP 2011033276A
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Prior art keywords
solar heat
insulating material
heat insulating
heat collecting
transparent porous
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Inventor
Hirotaka Wada
博孝 和田
Kazuyuki Maeda
和之 前田
Soki Fukumuro
創喜 福室
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Daiwa House Industry Co Ltd
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Daiwa House Industry Co Ltd
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Priority to JP2009180151A priority Critical patent/JP2011033276A/en
Publication of JP2011033276A publication Critical patent/JP2011033276A/en
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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
    • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
    • 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
    • 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
    • F24S80/56—Elements for transmitting incoming solar rays and preventing outgoing heat radiation; Transparent coverings characterised by means for preventing heat loss
    • 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
    • F24S2080/502—Special shape in the form of multiple 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
    • Y02E10/44—Heat exchange systems

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar heat collecting structure capable of preventing whitening and cracking of a transparent porous heat insulating material composed of silica aerogel, and improving durability. <P>SOLUTION: Double glass 2 including the transparent porous heat insulating material, obtained by charging the transparent porous heat insulating material 5 composed of silica aerogel between opposed glass plates 3, 4 in an air tight state, is disposed at a solar light receiving face side of a solar heat collecting material 1, and the diffusion of solar heat collected in the solar heat collecting material 1 through the double glass 2 including the transparent porous heat insulating material, is prevented by the transparent porous heat insulating material 5 of the double glass 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、太陽熱集熱構造に関する。   The present invention relates to a solar heat collecting structure.

太陽熱集熱構造として、図１（ハ）に示すように、太陽熱集熱板５１の太陽光受光面側にシリカエアロゲルからなる透明多孔質断熱材５２が設けられ、透明多孔質断熱材５２を通じて太陽熱集熱板５１に集熱された太陽熱の放散を透明多孔質断熱材５２が防いで太陽熱を効率良く集熱することができるようになされた太陽熱集熱パネル５３は、従来より知られている。なお、同パネル５３において、５４は表面のガラス板、５５は通水管、５６は断熱材である。   As the solar heat collecting structure, as shown in FIG. 1 (c), a transparent porous heat insulating material 52 made of silica aerogel is provided on the solar light receiving surface side of the solar heat collecting plate 51, and solar heat is transmitted through the transparent porous heat insulating material 52. 2. Description of the Related Art Conventionally, a solar heat collecting panel 53 that is capable of collecting solar heat efficiently by preventing the solar heat collected on the heat collecting plate 51 from being diffused by the transparent porous heat insulating material 52 has been known. In the panel 53, 54 is a surface glass plate, 55 is a water pipe, and 56 is a heat insulating material.

特開２００７−１３２０２４号公報JP 2007-133204 A

しかしながら、上記のような太陽熱集熱構造では、透明多孔質断熱材としてのシリカエアロゲル５２が、連続気泡構造となっていて透湿性を有しているため、パネル５３内に侵入した雨水が水蒸気化し、それが細線矢印で示すように、シリカエアロゲル５２内に侵入してシリカエアロゲル５２を白化させてしまうことがある。   However, in the solar heat collecting structure as described above, since the silica airgel 52 as the transparent porous heat insulating material has an open cell structure and moisture permeability, rainwater that has entered the panel 53 is vaporized. As indicated by the thin line arrows, the silica airgel 52 may penetrate into the silica airgel 52 and whiten.

また、シリカエアロゲル５２は、物性上、非常に脆いものである一方で、太陽熱集熱板５１は、−３０°Ｃ〜２００°Ｃの温度変化を行い、その温度変化によって熱膨張と収縮を繰り返すため、シリカエアロゲル５２が、太陽熱集熱板５１の熱膨張と収縮の影響を受けて割れてしまうこともある。   Further, the silica airgel 52 is very brittle in terms of physical properties, while the solar heat collecting plate 51 undergoes a temperature change of −30 ° C. to 200 ° C., and repeats thermal expansion and contraction due to the temperature change. Therefore, the silica airgel 52 may be broken under the influence of thermal expansion and contraction of the solar heat collecting plate 51.

本発明は、上記のような問題点に鑑み、シリカエアロゲルからなる透明多孔質断熱材の白化と割れを防ぐことができて、耐久性を向上することができる太陽熱集熱構造を提供することを課題とする。   In view of the above problems, the present invention provides a solar heat collecting structure that can prevent whitening and cracking of a transparent porous heat insulating material made of silica aerogel and can improve durability. Let it be an issue.

上記の課題は、対向するガラス板間にシリカエアロゲルからなる透明多孔質断熱材が気密状態に充填された透明多孔質断熱材入りの複層ガラスが、太陽熱集熱材の太陽光受光面側に設けられ、前記透明多孔質断熱材入り複層ガラスを通じて太陽熱集熱材に集熱された太陽熱の放散を該複層ガラスの透明多孔質断熱材が防ぐようになされていることを特徴とする太陽熱集熱構造によって解決される。   The above problem is that a multilayer glass containing a transparent porous heat insulating material in which a transparent porous heat insulating material made of silica airgel is filled in an airtight state between opposing glass plates is on the solar light receiving surface side of the solar heat collecting material. Solar heat characterized in that the transparent porous heat insulating material of the multi-layer glass prevents diffusion of solar heat collected by the solar heat collecting material through the multi-layer glass with the transparent porous heat insulating material. Solved by heat collection structure.

この構造では、シリカエアロゲルからなる透明多孔質断熱材が、対向するガラス板間に気密状態に充填されているので、内部に侵入した雨水が水蒸気化しても、それがシリカエアロゲル内に侵入することはなく、そのため、シリカエアロゲルからなる透明多孔質断熱材の白化を防ぐことができて、耐久性を向上することができる。   In this structure, the transparent porous heat insulating material made of silica aerogel is filled in an airtight state between the opposing glass plates, so that even if rainwater that has entered inside vaporizes, it can enter the silica airgel. Therefore, whitening of the transparent porous heat insulating material made of silica aerogel can be prevented, and durability can be improved.

しかも、シリカエアロゲルからなる透明多孔質断熱材と太陽熱集熱材との間には、複層ガラスを構成している一方のガラス板が存在しているので、太陽熱集熱材が温度変化によって熱膨張と収縮を行っても、その影響をシリカエアロゲルからなる透明多孔質断熱材が受けることはなく、そのため、シリカエアロゲルからなる透明多孔質断熱材の割れも防ぐことができて、耐久性を向上することができる。   Moreover, since one glass plate constituting the multi-layer glass exists between the transparent porous heat insulating material made of silica airgel and the solar heat collector, the solar heat collector is heated by the temperature change. Even if it expands and contracts, the transparent porous insulation made of silica aerogel is not affected by it, so it can also prevent cracking of the transparent porous insulation made of silica aerogel and improve durability can do.

本発明の太陽熱集熱構造は、以上のとおりのものであるから、シリカエアロゲルからなる透明多孔質断熱材の白化と割れを防ぐことができて、耐久性を向上することができる。   Since the solar heat collecting structure of the present invention is as described above, whitening and cracking of the transparent porous heat insulating material made of silica aerogel can be prevented, and durability can be improved.

図（イ）は第１実施形態の太陽熱集熱パネルの断面図、図（ロ）は第２実施形態の太陽熱集熱パネルの断面図、図（ハ）は従来の太陽熱集熱パネルの断面図である。Fig. (A) is a cross-sectional view of the solar heat collecting panel of the first embodiment, Fig. (B) is a cross-sectional view of the solar heat collecting panel of the second embodiment, and Fig. (C) is a cross-sectional view of a conventional solar heat collecting panel. It is.

次に、本発明の実施形態を図面に基づいて説明する。   Next, embodiments of the present invention will be described with reference to the drawings.

図１（イ）に示す第１実施形態の太陽熱集熱構造は、パネル状に構成されたもので、１は太陽熱集熱材としての集熱板、２は透明多孔質断熱材入り複層ガラスであり、
太陽熱集熱板１は、例えば、金属板の表面部に太陽光吸収性能と赤外線放射抑制性能の両方に優れた選択吸収膜が設けられたもの、あるいは、金属板の表面部に黒色塗料を塗布したもの等からなっており、
透明多孔質断熱材入り複層ガラス２は、対向するガラス板３，４間にシリカエアロゲルからなる透明多孔質断熱材５を気密状態に充填したものからなっている。 The solar heat collecting structure of the first embodiment shown in FIG. 1 (a) is configured in a panel shape, 1 is a heat collecting plate as a solar heat collecting material, and 2 is a multi-layer glass with a transparent porous heat insulating material. And
The solar heat collecting plate 1 has, for example, a metal plate provided with a selective absorption film excellent in both sunlight absorption performance and infrared radiation suppression performance on the surface portion of the metal plate, or a black paint applied to the surface portion of the metal plate. Made up of
The multi-layer glass 2 with a transparent porous heat insulating material is made of a transparent porous heat insulating material 5 made of silica airgel filled in an airtight state between opposing glass plates 3 and 4.

複層ガラス２は、太陽熱集熱板１の太陽光受光面側に、一方のガラス板４を接触状態とするように重ねられ、複層ガラス２を通じて太陽熱集熱板１に集熱された太陽熱の放散を複層ガラス２の透明多孔質断熱材５が防いで、太陽熱を効率良く集熱することができるようになされている。   The multi-layer glass 2 is stacked on the solar light receiving surface side of the solar heat collecting plate 1 so that one glass plate 4 is in contact, and the solar heat collected on the solar heat collecting plate 1 through the multi-layer glass 2. Is prevented by the transparent porous heat insulating material 5 of the multilayer glass 2 so that solar heat can be collected efficiently.

また、本実施形態では、太陽熱集熱板１の背面側には通水管６が設けられ、太陽熱集熱板１が集熱した太陽熱で、通水管６を通る水を加熱して、お湯を沸かすことができるようになされている。７は背面側の断熱材である。   Moreover, in this embodiment, the water flow pipe 6 is provided in the back side of the solar heat collecting plate 1, and the solar heat which the solar heat collecting plate 1 collected heats the water which passes the water flow pipe 6, and boils hot water. It has been made so that it can. Reference numeral 7 denotes a heat insulating material on the back side.

そして、上記の断熱材７、通水管６、太陽熱集熱板１及び複層ガラス２は、周囲枠８と背板９とで囲まれた内部に収容されて一体化され、太陽熱集熱パネル１０を構成している。   The heat insulating material 7, the water pipe 6, the solar heat collecting plate 1, and the multilayer glass 2 are housed and integrated in the interior surrounded by the peripheral frame 8 and the back plate 9, and the solar heat collecting panel 10. Is configured.

上記の太陽熱集熱パネル１０では、シリカエアロゲルからなる透明多孔質断熱材５が、対向するガラス板３，４間に気密状態に充填されているので、内部に侵入した雨水が水蒸気化しても、それがシリカエアロゲル５内に侵入することはなく、そのため、シリカエアロゲル５の白化を防ぐことができて、耐久性を向上することができる。   In the solar heat collecting panel 10 described above, since the transparent porous heat insulating material 5 made of silica aerogel is filled in an airtight state between the opposing glass plates 3 and 4, even if rainwater that has entered inside is steamed, It does not penetrate into the silica airgel 5, so that whitening of the silica airgel 5 can be prevented and durability can be improved.

しかも、シリカエアロゲルからなる透明多孔質断熱材５と太陽熱集熱板１との間には、複層ガラス２を構成している一方のガラス板４が存在しているので、太陽熱集熱板１が温度変化によって熱膨張と収縮を行っても、その影響をシリカエアロゲル５が受けることはなく、そのため、シリカエアロゲル５の割れも防ぐことができて、耐久性を向上することができる。   Moreover, since one glass plate 4 constituting the multi-layer glass 2 exists between the transparent porous heat insulating material 5 made of silica airgel and the solar heat collecting plate 1, the solar heat collecting plate 1. However, even if thermal expansion and contraction are caused by temperature change, the silica airgel 5 is not affected by this, and therefore, the silica airgel 5 can be prevented from cracking and the durability can be improved.

図１（ロ）に示す第２実施形態の太陽熱集熱パネル１０は、透明多孔質断熱材入り複層ガラス２と太陽熱集熱板１との間に空気層１１が設けられたもので、その他は第１実施形態の太陽熱集熱パネル１０と同じであり、第１実施形態の太陽熱集熱パネル１０と同様の作用効果が奏される。特に、本実施形態では、空気層１１が、通水管６に対する非通水時に太陽熱集熱板１が太陽熱の集熱を行うような場合に、太陽熱集熱板１の側のガラス板４が熱割れしてしまうのを効果的に防ぐことができる。   A solar heat collecting panel 10 according to the second embodiment shown in FIG. 1 (b) is provided with an air layer 11 between a multilayer glass 2 with a transparent porous heat insulating material and a solar heat collecting plate 1. Is the same as the solar heat collection panel 10 of the first embodiment, and the same effects as the solar heat collection panel 10 of the first embodiment are exhibited. In particular, in this embodiment, when the solar heat collecting plate 1 collects solar heat when the air layer 11 does not pass water through the water pipe 6, the glass plate 4 on the solar heat collecting plate 1 side is heated. It can prevent effectively that it breaks.

以上に、本発明の実施形態を示したが、本発明はこれに限られるものではなく、発明思想を逸脱しない範囲で各種の変更が可能である。例えば、上記の実施形態では、太陽熱集熱板１の背面側に通水管６が設けられ、該通水管６を流れる水を、集熱した太陽熱で沸かす構成としているが、太陽熱集熱板１の背面側に通気層を設け、該通気層に通される空気を、集熱した太陽熱で暖め、その空気を室内の暖房に用いる構成としてもよく、本発明では、太陽熱集熱板１で集熱した太陽熱の利用方法に制限はない。また、上記の実施形態では、本発明の太陽熱集熱構造を太陽熱集熱パネル１０に適用した場合を示したが、各種構造に構成されていてよい。また、太陽熱集熱材の形態も、上記の実施形態のような板状のものに限らず、種々の形態をしていてよい。   Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the water flow pipe 6 is provided on the back side of the solar heat collecting plate 1 and the water flowing through the water flow pipe 6 is boiled by the collected solar heat. A ventilation layer may be provided on the back side, the air passing through the ventilation layer may be warmed by the collected solar heat, and the air may be used for indoor heating. In the present invention, the solar heat collecting plate 1 collects heat. There are no restrictions on how to use solar heat. Moreover, in said embodiment, although the case where the solar-heat collection structure of this invention was applied to the solar-heat collection panel 10 was shown, you may be comprised by various structures. Moreover, the form of the solar heat collecting material is not limited to a plate-like one as in the above embodiment, and may take various forms.

１…太陽熱集熱板
２…複層ガラス
３，４…ガラス板
５…シリカエアロゲル（透明多孔質断熱材）
１０…太陽熱集熱パネル（太陽熱集熱構造） DESCRIPTION OF SYMBOLS 1 ... Solar heat collecting plate 2 ... Multi-layer glass 3, 4 ... Glass plate 5 ... Silica airgel (transparent porous heat insulating material)
10 ... Solar heat collection panel (solar heat collection structure)

Claims (1)

対向するガラス板間にシリカエアロゲルからなる透明多孔質断熱材が気密状態に充填された透明多孔質断熱材入りの複層ガラスが、太陽熱集熱材の太陽光受光面側に設けられ、前記透明多孔質断熱材入り複層ガラスを通じて太陽熱集熱材に集熱された太陽熱の放散を該複層ガラスの透明多孔質断熱材が防ぐようになされていることを特徴とする太陽熱集熱構造。   A multi-layer glass containing a transparent porous heat insulating material in which a transparent porous heat insulating material made of silica airgel is filled in an airtight state between opposing glass plates is provided on the solar light receiving surface side of the solar heat collecting material, and the transparent A solar heat collecting structure characterized in that the transparent porous heat insulating material of the multi-layer glass prevents the solar heat collected by the solar heat collecting material through the multi-layer glass containing the porous heat insulating material.
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Cited By (9)

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Publication number Priority date Publication date Assignee Title
JP2011064385A (en) * 2009-09-16 2011-03-31 Daiwa House Industry Co Ltd Solar heat collecting structure
EP2522927A3 (en) * 2011-05-13 2013-01-23 Termo Fluids, S.L. Solar thermal collector with transparent insulation
CN103062943A (en) * 2013-01-31 2013-04-24 山东威特人工环境有限公司 Stainless steel insulating pipe for solar heat collector
CN103185401A (en) * 2011-12-31 2013-07-03 成都首能新能源开发有限公司 Flat plate heat collector with condensing lens array
ES2431470R1 (en) * 2011-05-13 2013-12-04 Termo Fluids S L THERMAL SOLAR COLLECTORS WITH TRANSPARENT INSULATION
KR20160017245A (en) * 2014-08-01 2016-02-16 주식회사 탑솔 VIP insulation and double glazing structure applies to transmitting body flat plate solar collectors
KR101623362B1 (en) 2015-10-14 2016-05-24 주식회사 탑솔 VIP insulation and double glazing structure applies to transmitting body flat plate solar collectors
JP2018141525A (en) * 2017-02-28 2018-09-13 パナソニックＩｐマネジメント株式会社 Heat insulation structure and manufacturing method of the same
JP2022080676A (en) * 2020-11-18 2022-05-30 株式会社豊田中央研究所 Sunlight utilizing adsorption type heat pump

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011064385A (en) * 2009-09-16 2011-03-31 Daiwa House Industry Co Ltd Solar heat collecting structure
EP2522927A3 (en) * 2011-05-13 2013-01-23 Termo Fluids, S.L. Solar thermal collector with transparent insulation
ES2431470R1 (en) * 2011-05-13 2013-12-04 Termo Fluids S L THERMAL SOLAR COLLECTORS WITH TRANSPARENT INSULATION
CN103185401A (en) * 2011-12-31 2013-07-03 成都首能新能源开发有限公司 Flat plate heat collector with condensing lens array
CN103062943A (en) * 2013-01-31 2013-04-24 山东威特人工环境有限公司 Stainless steel insulating pipe for solar heat collector
KR20160017245A (en) * 2014-08-01 2016-02-16 주식회사 탑솔 VIP insulation and double glazing structure applies to transmitting body flat plate solar collectors
KR101599289B1 (en) 2014-08-01 2016-03-04 주식회사 탑솔 VIP insulation and double glazing structure applies to transmitting body flat plate solar collectors
KR101623362B1 (en) 2015-10-14 2016-05-24 주식회사 탑솔 VIP insulation and double glazing structure applies to transmitting body flat plate solar collectors
JP2018141525A (en) * 2017-02-28 2018-09-13 パナソニックＩｐマネジメント株式会社 Heat insulation structure and manufacturing method of the same
JP2022080676A (en) * 2020-11-18 2022-05-30 株式会社豊田中央研究所 Sunlight utilizing adsorption type heat pump

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