JPH0416508B2 - - Google Patents
Info
- Publication number
- JPH0416508B2 JPH0416508B2 JP62018401A JP1840187A JPH0416508B2 JP H0416508 B2 JPH0416508 B2 JP H0416508B2 JP 62018401 A JP62018401 A JP 62018401A JP 1840187 A JP1840187 A JP 1840187A JP H0416508 B2 JPH0416508 B2 JP H0416508B2
- Authority
- JP
- Japan
- Prior art keywords
- heat storage
- lithium bromide
- storage agent
- libr
- liquid 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.)
- Expired - Lifetime
Links
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 55
- 238000005338 heat storage Methods 0.000 claims description 22
- 239000011232 storage material Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 16
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 10
- 239000001110 calcium chloride Substances 0.000 claims description 10
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、液状蓄熱剤に係り、特に吸収冷凍サ
イクルの原理を利用したケミカル蓄熱に用いる安
価で溶解度の高い混合液状蓄熱剤に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid heat storage agent, and particularly to a mixed liquid heat storage agent that is inexpensive and has high solubility and is used for chemical heat storage using the principle of an absorption refrigeration cycle.
従来、吸収冷凍サイクルの原理を利用するケミ
カル蓄熱剤として臭化リチウム水溶液が知られて
いる。この方式は液状蓄熱剤を加熱し水分を濃度
差に変えて蓄熱し、使用時は濃厚蓄熱剤に水蒸気
を吸収させた時に発生する凝縮潜熱（凝固潜熱の
約６倍）を利用するもので蓄熱容量も大きく、か
つ利用温度を自由に変えられる（吸収冷凍及び吸
収ヒートポンプの原理より）特徴がある。
Conventionally, an aqueous lithium bromide solution has been known as a chemical heat storage agent that utilizes the principle of an absorption refrigeration cycle. This method heats the liquid heat storage agent and converts the moisture into a concentration difference to store heat. When in use, the condensation latent heat (approximately 6 times the solidification latent heat) generated when the concentrated heat storage agent absorbs water vapor is used to store heat. It has a large capacity and can be used at any temperature (based on the principles of absorption refrigeration and absorption heat pumps).
しかし上記蓄熱剤は非常に高価であるため、大
量の蓄熱剤を必要とする蓄熱には不適とされてい
た。安価な液状蓄熱剤として塩化カルシウムや塩
化マグネシウムがあるが水への溶解度が低く利用
できない。吸収冷凍機の臭化リチウムの混合吸収
剤（特公昭47−3666）も検討されているが、混合
されるZnCl2あるいはZnBr2には毒性があり蓄熱
剤として実用化されていない。
However, since the above-mentioned heat storage agent is very expensive, it has been considered unsuitable for heat storage requiring a large amount of heat storage agent. Calcium chloride and magnesium chloride are inexpensive liquid heat storage agents, but they have low solubility in water and cannot be used. A mixed absorbent of lithium bromide for absorption refrigerators (Japanese Patent Publication No. 47-3666) has been studied, but the mixed ZnCl 2 or ZnBr 2 is toxic and has not been put to practical use as a heat storage agent.
本発明の目的は、臭化リチウムと塩化カルシウ
ムを適切に混合することにより、安価でかつ溶解
度の高い混合液状蓄熱剤を提供することにある。 An object of the present invention is to provide a mixed liquid heat storage agent that is inexpensive and has high solubility by appropriately mixing lithium bromide and calcium chloride.
上記目的を達成する本発明の要旨は、塩化カル
シウムと臭化リチウムとの二成分のみからなるケ
ミカル液状蓄熱剤であつて、塩化カルシウムと臭
化リチウムとの配合比
LiBr／（LiBr＋CaCl2）
が重量で0.1〜0.4であることを特徴とする液状蓄
熱剤にあり、安価な塩化カルシウムに吸収性に優
れた臭化リチウムを組合せて、溶解度を改善した
液状蓄熱剤にある。
The gist of the present invention to achieve the above object is to provide a chemical liquid heat storage agent consisting of only two components, calcium chloride and lithium bromide, in which the compounding ratio of calcium chloride and lithium bromide is LiBr/(LiBr+CaCl 2 ) by weight. The present invention is a liquid heat storage agent characterized by having a coefficient of 0.1 to 0.4, and is a liquid heat storage agent with improved solubility by combining inexpensive calcium chloride with lithium bromide, which has excellent absorbability.
塩化カルシウムは安価であるが溶解度が低く、
液状蓄熱剤には不適だが、それに溶解度の高い臭
化リチウムを小量添加することにより溶解度が向
上し、混合比率〔LiBr／（LiBr＋CaCl2）〕が0.1
〜0.4で臭化リチウムと同等の溶解度が得られる
ことを発見した。上記発見により臭化リチウムと
同等の性能（溶解度、水蒸気圧特性）を持つ安価
なCaCl2−LiBr二成分混合液状蓄熱剤が開発でき
た。
Calcium chloride is cheap but has low solubility;
Although it is not suitable as a liquid heat storage agent, by adding a small amount of highly soluble lithium bromide to it, the solubility is improved and the mixing ratio [LiBr/(LiBr+CaCl 2 )] is 0.1.
It was discovered that a solubility equivalent to that of lithium bromide can be obtained at ~0.4. Based on the above discovery, we were able to develop an inexpensive CaCl 2 -LiBr two-component mixture liquid heat storage agent that has the same performance (solubility, water vapor pressure characteristics) as lithium bromide.
以下、本発明の実施例を第１図により説明す
る。溶解度の測定は、塩化カルシウムに所定量の
臭化リチウムを添加して合計で60％（重量）の水
溶液になるように加熱溶解させ、完全に溶解した
状態から、徐々に冷却し、溶解物の析出する温度
を求めた。析出温度は水溶液から析出する結晶の
発生の観察及び、析出時に液温が上昇する点から
判定した。
Embodiments of the present invention will be described below with reference to FIG. To measure solubility, add a predetermined amount of lithium bromide to calcium chloride and heat to dissolve it to a total aqueous solution of 60% (by weight).After it is completely dissolved, gradually cool it and dissolve the dissolved material. The temperature at which precipitation occurs was determined. The precipitation temperature was determined based on observation of the occurrence of crystals precipitated from the aqueous solution and the rise in liquid temperature during precipitation.
第１図に上記方法で求めた各混合比での析出温
度Ｔ（℃）を示す。横軸が合計濃度Ｃ（％）で縦軸
が析出温度を示す。参考のため塩化カルシウム単
独と臭化リチウム単独の場合の析出温度を載せて
ある。臭化リチウムの混合比LiBr／（LiBr＋
CaCl2）が0.1〜0.4の範囲で臭化リチウム単独の
場合の析出温度とよく一致している。液状蓄熱剤
の低コスト化にはできるだけ高価な臭化リチウム
の添加量を少なくすることが必要である。以上の
ことから、安価な液状蓄熱剤の適正混合比は0.1
〜0.4である。 FIG. 1 shows the precipitation temperature T (° C.) at each mixing ratio determined by the above method. The horizontal axis shows the total concentration C (%) and the vertical axis shows the precipitation temperature. For reference, the precipitation temperatures for calcium chloride alone and lithium bromide alone are listed. Mixing ratio of lithium bromide LiBr/(LiBr+
CaCl 2 ) is in the range of 0.1 to 0.4, which agrees well with the precipitation temperature for lithium bromide alone. In order to reduce the cost of liquid heat storage agents, it is necessary to reduce the amount of expensive lithium bromide added as much as possible. From the above, the appropriate mixing ratio for inexpensive liquid heat storage agents is 0.1
~0.4.
本発明によれば、溶解度が臭化リチウムと同等
で、無毒かつ安価な液状蓄熱剤を提供することが
できる。
According to the present invention, it is possible to provide a non-toxic and inexpensive liquid heat storage agent that has a solubility equivalent to that of lithium bromide.
第１図は、LiBr／（LiBr＋CaCl2）比および
該水溶液濃度と、結晶析出温度との関係を示すグ
ラフである。
FIG. 1 is a graph showing the relationship between the LiBr/(LiBr+CaCl 2 ) ratio, the concentration of the aqueous solution, and the crystal precipitation temperature.
Claims (1)
みからなるケミカル液状蓄熱剤であつて、塩化カ
ルシウムと臭化リチウムとの配合比 LiBr／（LiBr＋CaCl2） が重量で0.1〜0.4であることを特徴とする液状蓄
熱剤。[Claims] 1. A chemical liquid heat storage agent consisting of only two components, calcium chloride and lithium bromide, in which the blending ratio of calcium chloride and lithium bromide, LiBr/(LiBr+CaCl 2 ), is 0.1 to 0.4 by weight. A liquid heat storage agent characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62018401A JPS63189493A (en) | 1987-01-30 | 1987-01-30 | Liquid thermal energy storing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62018401A JPS63189493A (en) | 1987-01-30 | 1987-01-30 | Liquid thermal energy storing agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63189493A JPS63189493A (en) | 1988-08-05 |
| JPH0416508B2 true JPH0416508B2 (en) | 1992-03-24 |
Family
ID=11970660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62018401A Granted JPS63189493A (en) | 1987-01-30 | 1987-01-30 | Liquid thermal energy storing agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63189493A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6599196B2 (en) * | 2015-10-05 | 2019-10-30 | パナソニック株式会社 | Latent heat storage material and heat storage system using the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5932938A (en) * | 1982-08-19 | 1984-02-22 | Matsushita Electric Ind Co Ltd | Chemical heat pump |
-
1987
- 1987-01-30 JP JP62018401A patent/JPS63189493A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5932938A (en) * | 1982-08-19 | 1984-02-22 | Matsushita Electric Ind Co Ltd | Chemical heat pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63189493A (en) | 1988-08-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |