JPS61223468A - Radiational cooler - Google Patents
Radiational coolerInfo
- Publication number
- JPS61223468A JPS61223468A JP60059656A JP5965685A JPS61223468A JP S61223468 A JPS61223468 A JP S61223468A JP 60059656 A JP60059656 A JP 60059656A JP 5965685 A JP5965685 A JP 5965685A JP S61223468 A JPS61223468 A JP S61223468A
- Authority
- JP
- Japan
- Prior art keywords
- radiation
- heat radiator
- plate
- cooler
- heat
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、熱の放射現象を利用して空気等の冷却を行
う放射冷却器に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a radiation cooler that cools air or the like by utilizing a heat radiation phenomenon.
従来の技術
放射冷却器の原理は特開昭５８−８３１６８号公報に記
載されているように従来から知られている。すなわち、
冷却器の外部からの放射には太陽からの日射および大気
からの熱放射があり、一方冷却器内部から外部へ放出さ
れる放射には放射面から放射される熱放射があり、放射
面で授受され ゛る各放射のスペクトルは、第
２図に示すように放射面から放射される熱放射（１１）
の光エネルギーが赤外線部分において波長１０μｍ付近
にビークをもつ山形をなしているのに対して、大気から
の熱量１（１２）の光エネルギーは同じく赤外線部分に
おいて波長８〜１３μｍの範囲で大きく落ち込んで２つ
山形をなしており、また太陽からの日射〈１３）は大部
分可視光線部分の０．８μｍ以下に集中している。した
がって、冷却器を実質的に日射（１３）を遮断して使用
すれば、放射面から外部に放出される熱放射（１１）の
熱量が外部から入射する大気から熱放射（１２）の熱量
に比して大きくなるため放射面は放射により熱を失うの
で冷却器内部が冷却されるものである。この原理を利用
した放射冷却器は前記特開昭５８−８３１６８号公報に
記載されているように、ポリエチレンフィルムでカバー
された一面に開口を有する断熱容器の開口を、鏡面アル
ミニウム板にＣ０Ｃｒ２Ｏ７／に２８０４ 、 Ｓｔ
３ Ｎ４ ／に２８０４またはに２８０３ ／に２８０
４等の２１構造の無機材料もしくはビニールフロライド
−ビニリデンフロライドコポリマ、ポリオキシプロピレ
ン、二沸化ビニリデン、ポリプロピレンまたはエチレン
四沸化エチレンコポリマ等の単層構造の有機材料からな
る選択放射層を被着した熱放射体で覆い、被冷却体を熱
放射体に接触するように導入したものが知られている。BACKGROUND OF THE INVENTION The principle of a radiation cooler has been known for a long time as described in Japanese Patent Application Laid-open No. 83168/1983. That is,
Radiation from the outside of the cooler includes solar radiation from the sun and thermal radiation from the atmosphere, while radiation emitted from the inside of the cooler to the outside includes thermal radiation radiated from the radiating surface. The spectrum of each radiation is the thermal radiation (11) emitted from the radiation surface as shown in Figure 2.
The light energy of 1 (12) forms a mountain shape with a peak around the wavelength of 10 μm in the infrared region, while the light energy of the heat from the atmosphere falls significantly in the wavelength range of 8 to 13 μm in the infrared region. It has a double mountain shape, and most of the solar radiation (13) is concentrated in the visible light region below 0.8 μm. Therefore, if the cooler is used to substantially block solar radiation (13), the amount of heat from the thermal radiation (11) released from the radiation surface to the outside will be equal to the amount of thermal radiation (12) from the atmosphere entering from the outside. Since the radiation surface is larger in comparison, the radiation surface loses heat through radiation, which cools the inside of the cooler. A radiation cooler using this principle is described in the above-mentioned Japanese Patent Application Laid-Open No. 58-83168. 2804, St.
3 N4 / 2804 or 2803 / 280
The selective emissive layer is made of a 21-structure inorganic material such as 4, or a single-layer organic material such as vinyl fluoride-vinylidene fluoride copolymer, polyoxypropylene, vinylidene difluoride, polypropylene, or ethylene tetrafluoride copolymer. There is a known method in which the object is covered with a heat radiator attached to the heat radiator, and the object to be cooled is introduced so as to come into contact with the heat radiator.
発明が解決しようとする問題点
上記従来の放射冷却器においては、熱放射体に２層構造
の無機材料または単層の有機材料からなる選択放射層を
用いポリエチレンフィルムで外気を遮蔽する構造のもの
であるので、熱放射体の選択放射層が無機材料の場合は
吸水性のものを含んでいるので降雨特等高湿度時に使用
するには適当でなく、有機材料の場合は耐候性に欠ける
ので長期の使用に不向きであり、外気との遮蔽体に厚さ
０．２１１１のポリエチレンフィルムを用いているので
機械的強度に欠は破損しやすいし、機械的強度を高める
ために厚さを厚くすれば光線の透過率が悪化し大気への
熱の放射効率が悪くなる欠点があり、かつ耐候性に欠け
るので屋外での使用には適用性に乏しい問題点があった
。Problems to be Solved by the Invention The above-mentioned conventional radiation coolers have a structure in which the heat radiator has a selective radiation layer made of a two-layer structure of inorganic material or a single-layer structure of organic material, and the outside air is shielded with a polyethylene film. Therefore, if the selective radiation layer of the heat radiator is made of an inorganic material, it is not suitable for use in times of high humidity such as rain, as it contains water-absorbing material, and if it is made of an organic material, it lacks weather resistance, so it cannot be used for a long period of time. Since a polyethylene film with a thickness of 0.2111 is used as a shield from the outside air, it lacks mechanical strength and is easily damaged. It has disadvantages of poor light transmittance and poor heat radiation efficiency to the atmosphere, and lacks weather resistance, making it difficult to use outdoors.
問題点を解決するための手段
上記の問題点を解決するためのこの発明の手段は、−面
を開口した断熱容器と、この断熱容器の開口を覆う透光
板と、この透光板の内部に開口を覆うように設けた熱放
射体と、この熱放射体の内部に被冷却体を出入させる出
入部とからなり、前記透光板は高い赤外線透過率を有す
るＴｉＢｒ・ＴｆＬＩの結晶体、Ａ ｓ２ｓ ｅ３系ガ
ラスまたはＧ ｅ３３Ａｓ１２Ｓｅ５５系ガラス等から
なる板体で形成され、前記熱放射体は被冷却体と接触し
、かつ反射率および熱伝導率の高い金属板と、この金属
板を被覆する太陽光線に対して高い反射率を有し赤外線
に対して高い放射率を有するＴｔ ０２等からなる被膜
とから形成されている放射冷却器からなるものである。Means for Solving the Problems The means of the present invention for solving the above-mentioned problems consists of a heat insulating container with an opening on the - side, a light transmitting plate covering the opening of the heat insulating container, and an interior of the light transmitting plate. The transparent plate is made of a TiBr/TfLI crystal having high infrared transmittance; The heat radiator is formed of a plate made of A s2s e3 glass or Ge33As12Se55 glass, etc., and the heat radiator is in contact with the object to be cooled and is coated with a metal plate having high reflectance and thermal conductivity. The radiant cooler is made of a film made of Tt 02 or the like which has a high reflectance to sunlight and a high emissivity to infrared rays.
実施例 この発明の１実施例を図面を参照して説明する。Example An embodiment of the invention will be described with reference to the drawings.
第１図において、放射冷却器は外部から断熱する断熱容
器（１）と断熱容器（１）の開口（２）の表面を覆う透
光板（３）と、その下方において開口（２）を覆い冷却
される空気と接触する熱放射体（４）とから形成されて
おり、断熱容器（１）の側壁（５）にはその底部と熱放
射体（４）との間に空気送入口（６）およびその反対側
に空気送出口（７）が設けられている。In Figure 1, the radiation cooler consists of an insulated container (1) that insulates from the outside, a transparent plate (3) that covers the surface of the opening (2) of the insulated container (1), and a transparent plate (3) that covers the opening (2) below. The heat radiator (4) is in contact with the air to be cooled, and the side wall (5) of the heat insulating container (1) has an air inlet (6) between its bottom and the heat radiator (4). ) and an air outlet (7) on the opposite side.
そして、前記透光板（３）には厚さ５＋ａｍのＴｌ５ｒ
−Ｔｎｌの結晶体であるＫＨ２−５（商品名二株式会社
堀場製作所）の板が用いられ、また前記熱放射体（４）
は厚さトｌのアルミニウム板（８）にＴｉ ０２を主成
分とする白色塗料を塗被したもののばかアルミニウム板
（８）に白色紙を貼付した被膜（９）が用いられ、この
被膜（９）は赤外線波長域においては熱放射体（４）か
らの熱をよく放射するとともに太陽光線には高い反射作
用を有している。The transparent plate (3) has a Tl5r thickness of 5+am.
- A plate of KH2-5 (product name 2, Horiba, Ltd.), which is a crystal of Tnl, is used, and the heat radiator (4)
An aluminum plate (8) with a thickness of 1 is coated with a white paint containing Ti02 as the main component, and a coating (9) is used, which is made by pasting white paper on the aluminum plate (8). ) emits heat well from the heat radiator (4) in the infrared wavelength range, and has a high reflective effect on sunlight.
なお、熱放射体（４）はそのままでもよいが、その下面
に第３図〜第５図に示す金属製のフィン形、ハニカム形
、コルゲート形等の熱交換体（１０）を密着して設ける
と更に伝熱冷却効果を向上させることができる。また、
太陽光線の影響を完全に排゛除するために移動可能な遮
蔽板を設けることもできる。Note that the heat radiator (4) may be left as is, but a metal heat exchanger (10) in the form of fins, honeycomb, corrugate, etc. shown in FIGS. Furthermore, the heat transfer cooling effect can be improved. Also,
A movable shielding plate can also be provided to completely eliminate the influence of sunlight.
つぎに、この実施例と従来例とについて性能実験を行っ
た結果は下表に示すとおりである。Next, performance experiments were conducted on this embodiment and the conventional example, and the results are shown in the table below.
上記実施例１〜３は前記特開昭５８−８３１６８号公報
において有効とされた従来例よりも優れた冷却効果を示
していることがわかる。It can be seen that the above-mentioned Examples 1 to 3 exhibit a cooling effect superior to that of the conventional example effective in the above-mentioned Japanese Unexamined Patent Publication No. 58-83168.
また、透光板の厚さを６１１１Ｎ従来例の厚さ０゜２１
１１のポリエチレンフィルムの３０倍）の十分な機械的
強度を有する厚さとしたにもかかわらず赤外線の透過率
がきわめて優れており、熱放射体から放射する赤外線を
大気に良好に放射することを示している。In addition, the thickness of the transparent plate is 6111N, which is the thickness of the conventional example 0°21
Despite having a thickness that has sufficient mechanical strength (30 times that of polyethylene film (No. ing.
発明の効果
この発明は、外気との遮蔽体が機械的強度に欠は破損し
やすく、かつ耐候性に欠けて実用性がない従来の薄いポ
リエチレンフィルムと比べて機械的強度を大にしても透
光性が優れ、かつ耐候性のあるＴｊｌＢｒ −Ｔｒｆｌ
Ｉの結晶板、Ａ ｓ２Ｓ ｅ３系ガラスまたはＧｅ３
３ Ａｓ１２Ｓｅ５５系ガラス等の板体で形成した透光
板を用いているので、従来のように熱放射体への入射光
を選択しなくてもよく、透過した入射光のうち太陽光線
をＴｔ ０２を塗被した被膜で反射し、かつ大気からの
赤外線および熱放射体からの熱を透光板を通して冷却器
外へ放射することによって従来のものよりも優れた冷却
効果を有すると同時に、耐候性と機械的強度を兼ね備え
た透光板が冷却器のカバー材の役目をするので屋外で用
いる冷却器として耐久性のある実用に耐えるものが得ら
れ、また熱放射体に従来のように特別の材料を用いずア
ルミニウム板にＴｉ ０２等 −の白色塗料を
塗被しまたは白色紙を貼付した被膜等の簡単な構造の耐
久性のあるものを用いるだけであるから製作が容易で長
期の使用に耐える冷却器が得られる。Effects of the Invention This invention provides a shield against the outside air that lacks mechanical strength and is easily damaged, and is impractical due to lack of weather resistance. TjlBr-Trfl with excellent light properties and weather resistance
I crystal plate, A s2S e3 glass or Ge3
3 Since a light transmitting plate made of a plate such as As12Se55 glass is used, there is no need to select the incident light to the heat radiator as in the conventional case, and sunlight rays among the transmitted incident light are Tt 02 By reflecting the infrared rays from the atmosphere and the heat from the heat radiator through the transparent plate to the outside of the cooler, it has a better cooling effect than conventional ones, and at the same time has excellent weather resistance. The translucent plate, which has both mechanical strength and mechanical strength, serves as a cover material for the cooler, making it durable and practical as a cooler for outdoor use. It is easy to manufacture and can be used for a long time because it does not use any materials and only uses a simple and durable material such as an aluminum plate coated with white paint such as Ti 02 or pasted with white paper. You will get a cooler that will withstand.
第１図は、この発明の１実施例を示すもので縦断面で示
す説明図、第２図は放射面で授受される放射のスペクト
ルの模式特性図、第３図〜第５図はそれぞれ熱交換体を
示す説明図である。
（１）・・・断熱容器、（２）・・・開口、（３）・・
・透光板、（４）・・・熱放射体、（６）・・・入口、
（７）・・・出口、（８）・・・金属板、（９）・・・
被膜。
代理人 弁理士 坂 井 清
第 ２ 図
液 表＜Ｐｍ＞Fig. 1 is an explanatory diagram showing one embodiment of the present invention in a longitudinal section, Fig. 2 is a schematic characteristic diagram of the spectrum of radiation exchanged on the radiation surface, and Figs. It is an explanatory view showing an exchanger. (1)...Insulated container, (2)...Opening, (3)...
・Transparent plate, (4)...heat radiator, (6)...inlet,
(7)...Exit, (8)...Metal plate, (9)...
Coating. Agent Patent Attorney Kiyota Sakai 2 Illustration Table <Pm>
Claims (1)
の開口（２）を覆う透光板（３）と、この透光板（３）
の内部に開口（２）を覆うように設けた熱放射体（４）
と、この熱放射体（４）の内部に被冷却体を出入させる
出入部（６）、（７）とからなり、前記透光板（３）は
高い赤外線透過率を有するＴｌＢｒ・ＴｌＩの結晶体、
Ａｓ２Ｓｅ３系ガラスまたはＧｅ３３Ａｓ１２Ｓｅ５５
系ガラス等からなる板体で形成され、前記熱放射体（４
）は被冷却体と接触し、かつ反射率および熱伝導率の高
い金属板（８）と、この金属板（８）を被覆する太陽光
線に対して高い反射率を有し赤外線に対して高い放射率
を有するＴｉＯ２等からなる被膜（９）とから形成され
ている放射冷却器。An insulated container (1) with one side open and this insulated container (1)
a transparent plate (3) that covers the opening (2), and this transparent plate (3)
A heat radiator (4) provided inside the opening (2) to cover the opening (2).
and entrance/exit parts (6) and (7) for allowing the object to be cooled to go in and out of the heat radiator (4), and the transparent plate (3) is made of TlBr/TlI crystal having high infrared transmittance. body,
As2Se3 glass or Ge33As12Se55
The heat radiator (4) is formed of a plate made of glass or the like.
) is a metal plate (8) that is in contact with the object to be cooled and has a high reflectance and thermal conductivity, and a metal plate (8) that has a high reflectance for sunlight and high for infrared rays and covers this metal plate (8). A radiation cooler formed from a coating (9) made of TiO2 or the like having emissivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60059656A JPS61223468A (en) | 1985-03-26 | 1985-03-26 | Radiational cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60059656A JPS61223468A (en) | 1985-03-26 | 1985-03-26 | Radiational cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61223468A true JPS61223468A (en) | 1986-10-04 |
Family
ID=13119460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60059656A Pending JPS61223468A (en) | 1985-03-26 | 1985-03-26 | Radiational cooler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61223468A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017062055A (en) * | 2015-09-24 | 2017-03-30 | 矢崎エナジーシステム株式会社 | Radiation cooling panel and air conditioning system |
| JP2019066101A (en) * | 2017-09-29 | 2019-04-25 | 研介 藤村 | Sky radiation cooling device |
| US10591190B2 (en) | 2016-09-30 | 2020-03-17 | Fujifilm Corporation | Radiative cooling device |
| WO2020116111A1 (en) * | 2018-12-04 | 2020-06-11 | 富士フイルム株式会社 | Multilayer structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5883168A (en) * | 1981-11-10 | 1983-05-18 | 株式会社豊田中央研究所 | Radiational cooler |
| JPS59225252A (en) * | 1983-06-03 | 1984-12-18 | Matsushita Electric Works Ltd | Solar heat collector |
-
1985
- 1985-03-26 JP JP60059656A patent/JPS61223468A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5883168A (en) * | 1981-11-10 | 1983-05-18 | 株式会社豊田中央研究所 | Radiational cooler |
| JPS59225252A (en) * | 1983-06-03 | 1984-12-18 | Matsushita Electric Works Ltd | Solar heat collector |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017062055A (en) * | 2015-09-24 | 2017-03-30 | 矢崎エナジーシステム株式会社 | Radiation cooling panel and air conditioning system |
| US10591190B2 (en) | 2016-09-30 | 2020-03-17 | Fujifilm Corporation | Radiative cooling device |
| JP2019066101A (en) * | 2017-09-29 | 2019-04-25 | 研介 藤村 | Sky radiation cooling device |
| WO2020116111A1 (en) * | 2018-12-04 | 2020-06-11 | 富士フイルム株式会社 | Multilayer structure |
| JPWO2020116111A1 (en) * | 2018-12-04 | 2021-09-27 | 富士フイルム株式会社 | Multi-layer structure |
| US11360249B2 (en) | 2018-12-04 | 2022-06-14 | Fujifilm Corporation | Multilayer structure |
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