JPS60203690A - Thermal energy storage material - Google Patents
Thermal energy storage materialInfo
- Publication number
- JPS60203690A JPS60203690A JP6257284A JP6257284A JPS60203690A JP S60203690 A JPS60203690 A JP S60203690A JP 6257284 A JP6257284 A JP 6257284A JP 6257284 A JP6257284 A JP 6257284A JP S60203690 A JPS60203690 A JP S60203690A
- Authority
- JP
- Japan
- Prior art keywords
- zinc nitrate
- magnesium
- nitrate hexahydrate
- storage material
- zinc
- 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
Abstract
Description
【発明の詳細な説明】
本発明は硝酸亜鉛６水塩を主体とする蓄熱Ｈに関するも
のである。硝酸亜鉛６水塩は、融点３５℃、融解熱３０
ｃａｌ／ｇであり、太陽エネルギーの蓄熱材及び空調用
蓄熱材として有望な物質である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat storage H mainly composed of zinc nitrate hexahydrate. Zinc nitrate hexahydrate has a melting point of 35°C and a heat of fusion of 30°C.
cal/g, and is a promising substance as a heat storage material for solar energy and a heat storage material for air conditioning.
しかしながら、硝酸亜鉛の飽和水溶液は放熱時に過冷却
現象を起し、凝固点より１５℃以上の温度に冷却させて
も潜熱を放出しない。従って硝酸亜鉛６水塩を単独で蓄
熱材として使用した場合、３５℃近辺での吸熱と放熱が
円滑に進まず、この過冷却現象を抑制しない限り蓄熱材
として用いることはできなかった。However, a saturated aqueous solution of zinc nitrate causes a supercooling phenomenon when releasing heat, and does not release latent heat even if it is cooled to a temperature of 15° C. or higher than the freezing point. Therefore, when zinc nitrate hexahydrate is used alone as a heat storage material, heat absorption and heat radiation at around 35° C. do not proceed smoothly, and it cannot be used as a heat storage material unless this supercooling phenomenon is suppressed.
本発明者等はこのような事情に鑑み種々の試験研究を行
なった結果、硝酸亜鉛６水塩に水酸化マグネシウム、メ
タ硅酸マグネシウム、オルト硅酸マグネシウム、メタ硅
酸マグネシウムカルシウム、水酸化亜鉛を硝酸亜鉛飽和
水溶液に対する溶解度以上に添加することにより、硝酸
亜鉛６水塩の著しい発核効果が得られることを認め、本
発明を見い出したものである。In view of these circumstances, the present inventors conducted various tests and research, and found that magnesium hydroxide, magnesium metasilicate, magnesium orthosilicate, calcium magnesium metasilicate, and zinc hydroxide were added to zinc nitrate hexahydrate. The present invention was discovered by recognizing that a significant nucleation effect of zinc nitrate hexahydrate can be obtained by adding zinc nitrate hexahydrate at a level higher than its solubility in a saturated aqueous solution.
以下、本発明を実施例によって具体的に説明する。Hereinafter, the present invention will be specifically explained with reference to Examples.
実施例１゜
硝酸亜鉛６水塩１００ｇに水酸化マグネシウム５ｇを添
加した混合物をポリエチレン製容器の中に入れ、この容
器を５０℃の恒温水槽の中に入れて試料を加熱融解させ
た♂九℃の冷水槽に浸し放熱を行なわせ、試料の温度変
化を測定した。Example 1 A mixture of 100 g of zinc nitrate hexahydrate and 5 g of magnesium hydroxide was placed in a polyethylene container, and the container was placed in a constant temperature water bath at 50°C to melt the sample by heating at 9°C. The sample was immersed in a cold water bath to radiate heat, and the temperature change of the sample was measured.
その結果、凝固点３５℃を２℃過冷却したのち、３３℃
の温度で過冷却が破れ、その後試料の温度は３５℃とな
り、潜熱の放出が認められた。As a result, after supercooling the freezing point of 35°C by 2°C, 33°C
The supercooling was broken at a temperature of , after which the temperature of the sample reached 35°C, and the release of latent heat was observed.
また同一試料について融解凝固の操作を３０回繰り返し
たところ、３０回とも過冷却温度は２℃程度に抑えるこ
とができた。Furthermore, when the melting and solidifying operation was repeated 30 times for the same sample, the supercooling temperature could be suppressed to about 2° C. all 30 times.
実施例２．〜５゜
実施例１において、硝酸亜鉛６水塩１００ ｇに水酸化
マグネシウムに替えて、メタ硅酸マグネシウム、オル１
−珪酸マグネシウム、メタ硅酸マグネシウムカルシウム
、水酸化亜鉛を各々５ｇづつ添加した組成物を造り、同
様の試験を行なった結果を表１に示す。Example 2. ~5° In Example 1, 100 g of zinc nitrate hexahydrate was replaced with magnesium metasilicate, or 1
- Compositions were prepared in which 5 g each of magnesium silicate, magnesium calcium metasilicate, and zinc hydroxide were added, and similar tests were conducted. Table 1 shows the results.
これらの化合物はいずれも硝酸亜鉛６水塩に対し、優れ
た発核効果を呈した。All of these compounds exhibited excellent nucleation effects against zinc nitrate hexahydrate.
比較例１゜
硝酸亜鉛６水塩のみをポリエチレン製容器に入れ、実施
例１と同様の試験を行なったところ、凝固点３５°Ｃを
１５℃過冷却した２０°Ｃの温度に至って過冷却が破れ
た。Comparative Example 1 When only zinc nitrate hexahydrate was placed in a polyethylene container and the same test as in Example 1 was conducted, the temperature reached 20°C, which is 15°C supercooled from the freezing point of 35°C, and the supercooling was broken. Ta.
ｊ″′１
特許出願人 ！
四国化成工業株式会社 置 １
手続補正書（自発）
昭和？２年♂月μ日
２、 発明の名称
蓄熱材
３、補正をする者
事件との関係：特許出願人
（〒７６３ １ｉ：Ｌ０８７７２−２−４１１１ ）４
、補正の対象
明細書の発明の詳細な説明の欄
５、補正の内容
明細書第１真下から５行目の「１５°Ｃ以上」を「１５
°Ｃ以下」に補正する。j″′1 Patent Applicant! Shikoku Kasei Kogyo Co., Ltd. 1 Procedural Amendment (Voluntary) Showa 2/2/2/2019 μ Day 2 Name of the invention Heat storage material 3 Person making the amendment Relationship to the case: Patent applicant (〒763 1i:L08772-2-4111)4
, in Column 5 of the detailed description of the invention in the specification subject to amendment, change "15°C or higher" to "15
Correct to "below °C".
以上that's all
Claims (1)
ネシウム、オルト硅酸マグネシウム、メタ硅酸マグネシ
ウムカルシウム及び水酸化亜鉛からなる群の中から選ば
れた化合物を前記硝酸亜鉛の飽和水溶液に対する溶解度
以上添加したことを特徴とする蓄熱材。A compound selected from the group consisting of magnesium hydroxide, magnesium metasilicate, magnesium orthosilicate, calcium calcium metasilicate, and zinc hydroxide is added to zinc nitrate hexahydrate at a rate higher than the solubility of the zinc nitrate in a saturated aqueous solution. A heat storage material characterized by the addition of additives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6257284A JPS60203690A (en) | 1984-03-29 | 1984-03-29 | Thermal energy storage material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6257284A JPS60203690A (en) | 1984-03-29 | 1984-03-29 | Thermal energy storage material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60203690A true JPS60203690A (en) | 1985-10-15 |
Family
ID=13204145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6257284A Pending JPS60203690A (en) | 1984-03-29 | 1984-03-29 | Thermal energy storage material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60203690A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4760994B1 (en) * | 2010-09-28 | 2011-08-31 | パナソニック株式会社 | Heat storage device and air conditioner equipped with the same |
-
1984
- 1984-03-29 JP JP6257284A patent/JPS60203690A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4760994B1 (en) * | 2010-09-28 | 2011-08-31 | パナソニック株式会社 | Heat storage device and air conditioner equipped with the same |
| WO2012042694A1 (en) * | 2010-09-28 | 2012-04-05 | パナソニック株式会社 | Thermal storage device and air conditioning apparatus provided therewith |
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