JPS59115380A - Heat storage material - Google Patents
Heat storage materialInfo
- Publication number
- JPS59115380A JPS59115380A JP22519282A JP22519282A JPS59115380A JP S59115380 A JPS59115380 A JP S59115380A JP 22519282 A JP22519282 A JP 22519282A JP 22519282 A JP22519282 A JP 22519282A JP S59115380 A JPS59115380 A JP S59115380A
- Authority
- JP
- Japan
- Prior art keywords
- heat storage
- storage material
- alloy
- phase separation
- latent
- 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.)
- Granted
Links
Abstract
Description
【発明の詳細な説明】
この発明は、太陽熱を利用した暖房装置等の蓄熱器に使
用される蓄熱材に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat storage material used in a heat storage device such as a heating device using solar heat.
従来、蓄熱材としては、水、砕石、コンクリート等の顕
熱蓄熱材や、塩化カルシウム６水塩、硫酸ソーダ１０水
塩などの無機水和塩系の潜熱蓄熱材が使用されていた。Conventionally, as heat storage materials, sensible heat storage materials such as water, crushed stone, and concrete, and latent heat storage materials based on inorganic hydrated salts such as calcium chloride hexahydrate and sodium sulfate decahydrate have been used.
顕然蓄熱材では、蓄熱密度が小さいため十分な蓄熱量を
得るためには蓄熱器の容量をかなり大きくする必要があ
り、その結果重量もかなり大きくなるという問題があっ
た。無機水和塩系の潜熱蓄熱材を用いれば、その蓄熱密
度が大きいため蓄熱器の小型軽量化を図ることが可能と
なるが、相変化が起るはずの温度以下に冷却しても相変
化が起らないと０う過冷却現象が現われたり、融解と凝
固とを何度も繰返すことによって相分離現象が進行して
相変化が起らなくなって、潜熱蓄熱材としての役目を果
さなくなるという問題があった。Since the apparent heat storage material has a low heat storage density, it is necessary to increase the capacity of the heat storage device considerably in order to obtain a sufficient amount of heat storage, and as a result, there is a problem that the weight becomes considerably large. If an inorganic hydrated salt-based latent heat storage material is used, it is possible to make the heat storage device smaller and lighter due to its large heat storage density, but the phase change does not occur even when cooled to a temperature below the temperature at which the phase change should occur. If this does not occur, a supercooling phenomenon will occur, and by repeating melting and solidification many times, a phase separation phenomenon will progress and phase change will no longer occur, making it impossible to fulfill its role as a latent heat storage material. There was a problem.
この発明は、上記の問題を一挙に解決した蓄熱材を提供
することを目的とする。An object of the present invention is to provide a heat storage material that solves the above problems all at once.
この明細書において、「％」は「重量％］を表わすもの
とする。In this specification, "%" represents "% by weight".
この発明による蓄熱材は、Ｉｎ ４０〜６０％、８１２
０〜４０％、Ｓｎ５〜２５％よりなるものである。The heat storage material according to the present invention contains In 40-60%, 812
0 to 40% and Sn 5 to 25%.
上記において、Ｉｎ、ＢｉおよびＳｎは３元共晶を生成
する元素であり、これらの合金は、その共晶点近傍の組
成では融点が低くなる。Ｉｎ、ＢｉおよびＳｎの量をそ
れぞれ４０〜６０％、２０〜４０％および５〜２５％と
したのはつぎの理由による。蓄熱材としては、顕然蓄熱
材よりも潜熱蓄熱材のほうが蓄熱密度が大きいので、小
容量で十分な熱を蓄えることが可能となる。ところが、
太陽熱を利用した暖房装置等の蓄熱器に潜熱蓄熱材とし
て用いるためには、その融点がほぼ２５〜７０℃の範囲
内にある必要がある。Ｉｎ、３ｉおよびＳｎの量が上記
範囲外にあると、融点が２５〜７０℃の範囲からはずれ
てしまう。しＩＣがって、Ｉｎ 、ＢｉおよびＳｎの最
は、それぞれ４０〜６０％、２０〜４０％および５〜２
５％とりへきである。In the above, In, Bi, and Sn are elements that form a ternary eutectic, and an alloy of these has a low melting point at a composition near its eutectic point. The reason why the amounts of In, Bi, and Sn are set to 40 to 60%, 20 to 40%, and 5 to 25%, respectively is as follows. As a heat storage material, a latent heat storage material has a higher heat storage density than an obvious heat storage material, so it is possible to store sufficient heat with a small capacity. However,
In order to use it as a latent heat storage material in a heat storage device such as a heating device using solar heat, its melting point must be within the range of approximately 25 to 70°C. If the amounts of In, 3i and Sn are outside the above range, the melting point will deviate from the range of 25 to 70°C. Therefore, the maximum of In, Bi and Sn is 40-60%, 20-40% and 5-2%, respectively.
It is 5% special.
この発明による蓄熱材は合金からなるので相分離現象を
起すことがなく、したがって、長期間その蓄熱性能を維
持しうる。さらに、この発明による蓄熱材は、潜熱蓄熱
材であるので、顕然蓄熱材と比較して蓄熱密度が大きく
、したがって容積が小さくても十分な熱を蓄えることが
できる。Since the heat storage material according to the present invention is made of an alloy, it does not undergo phase separation, and therefore can maintain its heat storage performance for a long period of time. Furthermore, since the heat storage material according to the present invention is a latent heat storage material, it has a higher heat storage density than an obvious heat storage material, and therefore can store sufficient heat even if its volume is small.
つぎにこの発明の実施例を示す。Next, examples of this invention will be shown.
Ｉｎ５１％、８１３３％および５ｎ１６％よりなる蓄熱
材をつくり、鉄製の容器内に封入した。この蓄熱材の融
点は６１℃であった。ついで、この蓄熱材に、１００℃
まで加熱した後に室温まで放置するという蓄放熱サイク
ルを１０００回繰返して行なった。その結果、冷却曲線
は、１回目も１０００回目もほぼ同じ形となっていた。A heat storage material made of 51% In, 8133% In, and 16% 5N was prepared and sealed in an iron container. The melting point of this heat storage material was 61°C. Next, this heat storage material was heated to 100℃.
A heat storage/release cycle of heating to room temperature and then leaving it to room temperature was repeated 1000 times. As a result, the cooling curves had almost the same shape for both the 1st and 1000th cooling cycles.
このことから、上記蓄熱材が、融解、凝固を何度繰返し
たとしても、相分離を起すことはな（、常に相変化して
いるので、潜熱蓄熱材としての性能が長期間に渡って維
持されることがわかる。Therefore, no matter how many times the heat storage material is melted and solidified, it will not undergo phase separation (because the phase is always changing, its performance as a latent heat storage material will be maintained over a long period of time). I know it will happen.
以上that's all
Claims (1)
よりなる蓄熱材。In40-60%, 8120-40%, 3n5-25%
A heat storage material made of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22519282A JPS59115380A (en) | 1982-12-22 | 1982-12-22 | Heat storage material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22519282A JPS59115380A (en) | 1982-12-22 | 1982-12-22 | Heat storage material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59115380A true JPS59115380A (en) | 1984-07-03 |
| JPH0155678B2 JPH0155678B2 (en) | 1989-11-27 |
Family
ID=16825407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22519282A Granted JPS59115380A (en) | 1982-12-22 | 1982-12-22 | Heat storage material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59115380A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03274389A (en) * | 1990-03-26 | 1991-12-05 | Saamaru:Kk | Heat storage device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022122666A (en) | 2021-02-10 | 2022-08-23 | 富士フイルムビジネスイノベーション株式会社 | Identification apparatus and identification program |
-
1982
- 1982-12-22 JP JP22519282A patent/JPS59115380A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03274389A (en) * | 1990-03-26 | 1991-12-05 | Saamaru:Kk | Heat storage device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0155678B2 (en) | 1989-11-27 |
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