JPH11335660A - Cold-reserving material - Google Patents
Cold-reserving materialInfo
- Publication number
- JPH11335660A JPH11335660A JP10148185A JP14818598A JPH11335660A JP H11335660 A JPH11335660 A JP H11335660A JP 10148185 A JP10148185 A JP 10148185A JP 14818598 A JP14818598 A JP 14818598A JP H11335660 A JPH11335660 A JP H11335660A
- Authority
- JP
- Japan
- Prior art keywords
- chloride
- ice
- cold
- eutectic mixture
- water
- 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
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、蓄冷物質に関する
ものである。TECHNICAL FIELD The present invention relates to a regenerative substance.
【０００２】[0002]
【従来の技術】蓄冷設備には、冷凍機で冷却された冷媒
すなわち蓄冷物質を導き蓄える蓄冷タンクが設けられて
おり、この蓄冷タンクに蓄えられた冷熱が、所定の冷熱
需要箇所に供給されている。2. Description of the Related Art A regenerator is provided with a regenerator tank for guiding and storing a refrigerant cooled by a refrigerator, that is, a regenerative substance. The regenerative heat stored in the regenerator tank is supplied to a predetermined cold heat demand location. I have.
【０００３】ところで、上記蓄冷タンクに蓄えられる蓄
冷物質としては、水に寒材と呼ばれる物質、例えばエチ
レングリコールが添加されて、０℃以下の融点を有する
ようにされている。As a cold storage material stored in the cold storage tank, a substance called a cold material, for example, ethylene glycol, is added to water to have a melting point of 0 ° C. or less.
【０００４】[0004]
【発明が解決しようとする課題】ところで、上記従来の
蓄冷物質の主成分が水であり、零度以下の冷熱を蓄えよ
うとすると、ある温度で水が凍り始め、氷が析出してく
ると、蓄冷物質の濃度が増加して融点が低下する。この
ため、一定の融解温度が得られないという問題が生じ
る。また、より低温の温度が要求される場合、寒材であ
るエチレングリコールの添加量が増加させられるが、蓄
冷タンク内での氷の占める割合、すなわち氷充填率の上
限が低下するという問題がある。By the way, water is a main component of the above-mentioned conventional cold storage material, and when trying to store cold heat of zero degree or less, water starts to freeze at a certain temperature, and when ice starts to precipitate, The concentration of the regenerator material increases and the melting point decreases. Therefore, there is a problem that a constant melting temperature cannot be obtained. Further, when a lower temperature is required, the amount of addition of ethylene glycol, which is a cold material, is increased, but there is a problem that the ratio of ice in the cold storage tank, that is, the upper limit of the ice filling rate decreases. .
【０００５】そこで、本発明は、融点が一定で、かつ氷
充填率の上限が低下するのを防止し得る蓄冷物質を提供
することを目的とする。Accordingly, an object of the present invention is to provide a regenerator material having a constant melting point and capable of preventing the upper limit of the ice filling rate from being lowered.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に、本発明の蓄冷物質は、水と、塩化カリウム、塩化ア
ンモニウム、塩化ナトリウム、塩化マグネシウム、塩化
カルシウム、硝酸アンモニウム、硝酸ナトリウム、炭酸
カリウムおよび尿素のいずれかとからなる共融混合物
に、氷粒子凝結防止材を３〜６重量％添加したものであ
り、また上記氷粒子凝結防止材として、プロピレングリ
コール、エチレングリコールまたはソルビトールを使用
したものである。In order to solve the above-mentioned problems, the regenerator material of the present invention comprises water, potassium chloride, ammonium chloride, sodium chloride, magnesium chloride, calcium chloride, ammonium nitrate, sodium nitrate, potassium carbonate and potassium carbonate. An eutectic mixture of any one of urea and 3 to 6% by weight of an anti-settling agent for ice particles is added, and propylene glycol, ethylene glycol or sorbitol is used as the anti-settling agent for ice particles. .
【０００７】上記の蓄冷物質によると、水と各物質とか
らなる各共融混合物に、３〜６重量％の範囲内で、氷粒
子凝結防止材を添加して、凝固点と融解点との温度差を
僅かに設けることにより、蓄氷タンク内にスラリー状の
氷を蓄えることができる。According to the above regenerator material, an anti-coagulant for ice particles is added to each eutectic mixture composed of water and each material within a range of 3 to 6% by weight, and the temperature between the freezing point and the melting point is increased. By providing a slight difference, ice in a slurry state can be stored in the ice storage tank.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施の形態におけ
る蓄冷物質について説明する。本発明の冷熱を蓄えるた
めの蓄冷物質（潜熱蓄冷材ともいう）は、水と、塩化カ
リウム（ＫＣｌ）、塩化アンモニウム（ＮＨ4Ｃｌ）、
塩化ナトリウム（ＮａＣｌ）、塩化マグネシウム（Ｍｇ
Ｃｌ2）、塩化カルシウム（ＣａＣｌ2）、硝酸アンモニ
ウム（ＮＨ4ＮＯ3）、硝酸ナトリウム（ＮａＮＯ3）、
炭酸カリウム（Ｋ2ＣＯ3）および尿素［ＣＯ（Ｎ
Ｈ2）2］のいずれかとからなる共融混合物（共晶混合
物）の溶液に、氷粒子凝結防止材として、プロピレング
リコール、エチレングリコールまたはソルビトールを、
３〜６重量％の範囲内で添加したものである。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a regenerative substance according to an embodiment of the present invention will be described. The cold storage material (also called a latent heat storage material) for storing cold heat according to the present invention includes water, potassium chloride (KCl), ammonium chloride (NH 4 Cl),
Sodium chloride (NaCl), magnesium chloride (Mg
Cl 2 ), calcium chloride (CaCl 2 ), ammonium nitrate (NH 4 NO 3 ), sodium nitrate (NaNO 3 ),
Potassium carbonate (K 2 CO 3 ) and urea [CO (N
H 2 ) 2 ], a solution of a eutectic mixture (eutectic mixture) comprising:
It is added in the range of 3 to 6% by weight.
【０００９】ここで、水と塩化カリウム（ＫＣｌ）（共
融濃度が１９．７重量％）とからなる共融混合物に、氷
粒子凝結防止材として、エチレングリコールを、３〜６
重量％の範囲で添加した場合の、凝固・融解特性のグラ
フを図１に示す。[0009] Here, ethylene glycol is added to the eutectic mixture consisting of water and potassium chloride (KCl) (eutectic concentration of 19.7% by weight) as an anti-coagulant for ice particles, and 3 to 6
FIG. 1 shows a graph of the solidification / melting characteristics when added in the range of weight%.
【００１０】図１から分かるように、この氷粒子凝結防
止材が添加された共融混合物の融解点（融点）Ａおよび
凝固点Ｂとの間には、所定の温度幅（ΔＴ）が得られて
おり、氷と液体とが共存する状態、すなわちスラリー状
の氷が存在することが分かる。このように、蓄氷タンク
内にスラリー状の氷が存在するということは、安定した
温度でもって冷熱を供給することができるということを
意味しており、通常、スラリー状の氷は、５０％程度蓄
えられるのが好ましい。As can be seen from FIG. 1, a predetermined temperature range (ΔT) is obtained between the melting point (melting point) A and the solidification point B of the eutectic mixture to which the ice particle anti-settling material is added. This indicates that ice and the liquid coexist, that is, ice in the form of slurry exists. As described above, the presence of the slurry ice in the ice storage tank means that cold heat can be supplied at a stable temperature. Generally, the slurry ice is 50% It is preferable that the degree is stored.
【００１１】なお、下記の［表１］に、水と上述した各
物質とからなる各共融混合物の共融濃度と共融温度とを
示しておく。The following Table 1 shows the eutectic concentration and the eutectic temperature of each eutectic mixture composed of water and each of the above-mentioned substances.
【００１２】[0012]
【表１】 [Table 1]
【００１３】このように、水と各物質とからなる各共融
混合物に、３〜６重量％の範囲内で、氷粒子凝結防止材
を添加して、凝固点と融解点との温度差（ΔＴ）を僅か
に設けることにより、蓄氷タンク内にスラリー状の氷を
蓄えることができる。すなわち、融解点を一定に保つこ
とができるとともに、共融混合物を使用しているため、
氷充填率の上限の低下を防止し得る。[0013] As described above, to each eutectic mixture composed of water and each substance, an anti-coagulant for ice particles is added within the range of 3 to 6% by weight, and the temperature difference between the freezing point and the melting point (ΔT ) Can store slurry ice in the ice storage tank. In other words, since the melting point can be kept constant and the eutectic mixture is used,
The lower limit of the ice filling rate can be prevented.
【００１４】これに対して、水と塩化カリウム（共融濃
度が１９．７重量％）との共融混合物だけの場合には、
一相系のように振る舞うため、図２に示すように、凝固
点と融解点とが一致（ΔＴ＝０）し、したがってスラリ
ー状の氷を殆ど得ることができない。On the other hand, when only a eutectic mixture of water and potassium chloride (eutectic concentration is 19.7% by weight),
Since it behaves like a one-phase system, as shown in FIG. 2, the freezing point and the melting point coincide (ΔT = 0), and almost no slurry ice can be obtained.
【００１５】なお、水にエチレングリコールを混合させ
た場合（例えば、エチレングリコール濃度が約２２重量
％となるように）、図３に示すように、この物質は共融
混合物では無いため、−１０℃で氷が析出し始めて（エ
チレングリコールの共融点は、６４重量％で−６３．５
℃である）その濃度が増加し、凝固点が低下する。例え
ば、蓄氷タンク内の氷充填率を５０％にすると、エチレ
ングリコールリッチとなり、凝固点が−３０℃より低く
なって温度制御が困難となる。When ethylene glycol is mixed with water (for example, so that the ethylene glycol concentration becomes about 22% by weight), as shown in FIG. 3, since this substance is not a eutectic mixture, it is -10%. At ℃, ice began to precipitate (the eutectic point of ethylene glycol was -63.5% at 64% by weight).
° C) its concentration increases and the freezing point decreases. For example, when the ice filling rate in the ice storage tank is set to 50%, ethylene glycol becomes rich, the freezing point becomes lower than −30 ° C., and temperature control becomes difficult.
【００１６】また、［表１］に示した物質以外にも、炭
酸ナトリウム（Ｎａ2ＣＯ3）、炭酸水素カリウム（ＫＨ
ＣＯ3）または炭酸水素アンモニウム（ＮＨ4ＨＣＯ）に
ついても、使用することができる。In addition to the substances shown in Table 1, sodium carbonate (Na 2 CO 3 ) and potassium hydrogen carbonate (KH
CO 3 ) or ammonium bicarbonate (NH 4 HCO) can also be used.
【００１７】[0017]
【発明の効果】以上のように本発明の蓄冷物質による
と、共融混合物に３〜６重量％の範囲内で、氷粒子凝結
防止材を添加して、凝固点と融解点との温度差を僅かに
設けることにより、蓄氷タンク内にスラリー状の氷を蓄
えることができる。すなわち、融解点を一定に保つこと
ができるとともに、氷充填率の上限の低下を防止し得
る。As described above, according to the regenerator material of the present invention, an anti-coagulant for ice particles is added to the eutectic mixture in the range of 3 to 6% by weight to reduce the temperature difference between the freezing point and the melting point. By providing a small amount, it is possible to store the slurry ice in the ice storage tank. In other words, the melting point can be kept constant, and the lower limit of the ice filling rate can be prevented.
【図１】本発明の実施の形態における蓄冷物質の凝固・
融解特性を示すグラフ図である。FIG. 1 shows the solidification of a cold storage material according to an embodiment of the present invention.
FIG. 4 is a graph showing melting characteristics.
【図２】本発明の蓄冷物質の比較例における蓄冷物質の
凝固・融解特性を示すグラフ図である。FIG. 2 is a graph showing the solidification and melting characteristics of a cold storage material in a comparative example of the cold storage material of the present invention.
【図３】本発明の蓄冷物質の比較例における蓄冷物質の
凝固・融解特性を示すグラフ図である。FIG. 3 is a graph showing the solidification and melting characteristics of the cold storage material in a comparative example of the cold storage material of the present invention.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高木 義信 大阪府大阪市住之江区南港北１丁目７番89 号 日立造船株式会社内 (72)発明者 長屋 喜一 大阪府大阪市住之江区南港北１丁目７番89 号 日立造船株式会社内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshinobu Takagi 1-89, Minamikohoku, Suminoe-ku, Osaka-shi, Osaka Inside Hitachi Zosen Corporation (72) Inventor Kiichi Nagaya 1-chome, Minamikohoku, Suminoe-ku, Osaka-shi, Osaka 7-89 Hitachi Zosen Corporation
Claims (2)
塩化ナトリウム、塩化マグネシウム、塩化カルシウム、
硝酸アンモニウム、硝酸ナトリウム、炭酸カリウムおよ
び尿素のいずれかとからなる共融混合物に、氷粒子凝結
防止材を３〜６重量％添加したことを特徴とする蓄冷物
質。(1) water, potassium chloride, ammonium chloride,
Sodium chloride, magnesium chloride, calcium chloride,
A regenerative substance comprising a eutectic mixture of ammonium nitrate, sodium nitrate, potassium carbonate and urea, wherein an anti-settling agent for ice particles is added in an amount of 3 to 6% by weight.
ル、エチレングリコールまたはソルビトールであること
を特徴とする請求項１記載の蓄冷物質。2. The regenerative substance according to claim 1, wherein the ice particle setting agent is propylene glycol, ethylene glycol or sorbitol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10148185A JPH11335660A (en) | 1998-05-29 | 1998-05-29 | Cold-reserving material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10148185A JPH11335660A (en) | 1998-05-29 | 1998-05-29 | Cold-reserving material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11335660A true JPH11335660A (en) | 1999-12-07 |
Family
ID=15447152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10148185A Pending JPH11335660A (en) | 1998-05-29 | 1998-05-29 | Cold-reserving material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11335660A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001009558A1 (en) * | 1999-08-02 | 2001-02-08 | The University Of Chicago | Methods and apparatus for producing phase change ice particulate saline slurries |
| JP2007504326A (en) * | 2003-09-02 | 2007-03-01 | アラスカ オーシャン プロダクツ | Organic cooling medium and use thereof |
| US7389653B2 (en) | 2005-09-15 | 2008-06-24 | The University Of Chicago | Medical ice slurry production device |
| CN107556972A (en) * | 2017-08-24 | 2018-01-09 | 中国科学院青海盐湖研究所 | Normal low temperature phase change energy-accumulating medium and preparation method thereof |
| US20180105728A1 (en) * | 2015-06-19 | 2018-04-19 | Kaneka Corporation | Cold storage material composition, cold storage material, and transport container |
| CN113136175A (en) * | 2020-01-24 | 2021-07-20 | 纯钧新材料(深圳)有限公司 | Preparation method of inorganic phase change material as coolant |
| US11084963B2 (en) | 2017-03-29 | 2021-08-10 | Kaneka Corporation | Cold storage material composition, method for using cold storage material composition, cold storage material, and transport container |
| US11326084B2 (en) | 2018-03-06 | 2022-05-10 | Kaneka Corporation | Cold storage material composition and use thereof |
-
1998
- 1998-05-29 JP JP10148185A patent/JPH11335660A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001009558A1 (en) * | 1999-08-02 | 2001-02-08 | The University Of Chicago | Methods and apparatus for producing phase change ice particulate saline slurries |
| US6413444B1 (en) * | 1999-08-02 | 2002-07-02 | The University Of Chicago | Methods and apparatus for producing phase change ice particulate saline slurries |
| JP2007504326A (en) * | 2003-09-02 | 2007-03-01 | アラスカ オーシャン プロダクツ | Organic cooling medium and use thereof |
| US7389653B2 (en) | 2005-09-15 | 2008-06-24 | The University Of Chicago | Medical ice slurry production device |
| US20180105728A1 (en) * | 2015-06-19 | 2018-04-19 | Kaneka Corporation | Cold storage material composition, cold storage material, and transport container |
| US10717910B2 (en) * | 2015-06-19 | 2020-07-21 | Kaneka Corporation | Cold storage material composition, cold storage material, and transport container |
| US11084963B2 (en) | 2017-03-29 | 2021-08-10 | Kaneka Corporation | Cold storage material composition, method for using cold storage material composition, cold storage material, and transport container |
| CN107556972A (en) * | 2017-08-24 | 2018-01-09 | 中国科学院青海盐湖研究所 | Normal low temperature phase change energy-accumulating medium and preparation method thereof |
| CN107556972B (en) * | 2017-08-24 | 2021-03-02 | 中国科学院青海盐湖研究所 | Normal-low temperature phase change energy storage medium and preparation method thereof |
| US11326084B2 (en) | 2018-03-06 | 2022-05-10 | Kaneka Corporation | Cold storage material composition and use thereof |
| CN113136175A (en) * | 2020-01-24 | 2021-07-20 | 纯钧新材料(深圳)有限公司 | Preparation method of inorganic phase change material as coolant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |