JPH0657242A - Heat-transport medium for ice heat storage - Google Patents
Heat-transport medium for ice heat storageInfo
- Publication number
- JPH0657242A JPH0657242A JP4209190A JP20919092A JPH0657242A JP H0657242 A JPH0657242 A JP H0657242A JP 4209190 A JP4209190 A JP 4209190A JP 20919092 A JP20919092 A JP 20919092A JP H0657242 A JPH0657242 A JP H0657242A
- Authority
- JP
- Japan
- Prior art keywords
- transport medium
- aqueous solution
- heat
- ice
- chiller unit
- 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
【０００１】[0001]
【産業上の利用分野】本発明は、例えば、地域冷房用の
媒体等に適用し得る氷蓄熱用熱輸送媒体に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat transport medium for ice heat storage, which can be applied to, for example, a medium for district cooling.
【０００２】[0002]
【従来の技術】従来、氷蓄熱用熱輸送媒体として、エチ
レングリコール水溶液、プロピレングリコール水溶液等
が用いられていた。2. Description of the Related Art Conventionally, an ethylene glycol aqueous solution, a propylene glycol aqueous solution, or the like has been used as a heat transport medium for ice heat storage.
【０００３】[0003]
【発明が解決しようとする課題】しかし、これらの媒体
を用いて氷を作る場合、これらの媒体は、凝固点降下を
起こすという特性を持っているため、０℃で氷を作るこ
とができない。従って、氷を作るために用いるチラーユ
ニットの冷媒の蒸発温度が低くなるため、チラーユニッ
トの効率低下をもたらす（チラーユニットの効率は、冷
媒蒸発温度が高ければ高い程よい）。However, when making ice using these media, it is impossible to make ice at 0 ° C. because these media have the characteristic of causing a freezing point depression. Therefore, the evaporation temperature of the refrigerant of the chiller unit used for making ice becomes low, resulting in a decrease in the efficiency of the chiller unit (the higher the refrigerant evaporation temperature, the better the efficiency of the chiller unit).
【０００４】本発明は、係る従来の問題を克服するため
になされたものであり、その目的は、安定性に優れ、な
おかつ凝固点降下が少なく、チラーユニットの効率を向
上し得る氷蓄熱用熱輸送媒体を提供することにある。The present invention has been made to overcome the above-mentioned conventional problems, and an object thereof is to provide excellent stability, less freezing point depression, and improved efficiency of a chiller unit for heat storage for ice storage. To provide the medium.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成し得る
本発明の氷蓄熱用熱輸送媒体は、一般分子式Ｃn ＨmＯ
Ｈx （ここで、n ＝４〜１２，x ＝４〜１１）で表され
る飽和鎖式炭化水素系多価アルコールを０．１〜３０ｗ
ｔ％含有する水溶液に防腐剤、防錆剤、消泡剤等の添加
剤を所定量添加したことを特徴とする。The heat transport medium for ice heat storage according to the present invention, which can achieve the above objects, has a general molecular formula of Cn HmO.
0.1 to 30 w of a saturated chain hydrocarbon-based polyhydric alcohol represented by Hx (where n = 4 to 12 and x = 4 to 11)
It is characterized in that a predetermined amount of additives such as antiseptics, rust preventives and antifoaming agents are added to an aqueous solution containing t%.
【０００６】このように、一般分子式Ｃn Ｈm ＯＨx
（ここで、n ＝４〜１２，x ＝４〜１１）で表される飽
和鎖式炭化水素系多価アルコールを０．１〜３０ｗｔ％
含有する水溶液に防腐剤、防錆剤、消泡剤等の添加剤を
所定量添加することにより、凝固点降下が少なく、チラ
ーユニットの効率を向上できる。ここで、一般分子式Ｃ
n Ｈm ＯＨx （ここで、n ＝４〜１２，x ＝４〜１１）
で表される飽和鎖式炭化水素系多価アルコールとして
は、ソルビトール〔ＣＨ2ＯＨ（ＣＨＯＨ）4 ＣＨ2 Ｏ
Ｈ〕、マルチトール〔Ｃ1 2 Ｈ2 4 Ｏ1 1 〕、アラビッ
ト〔ＣＨ2 ＯＨ（ＣＨＯＨ）3 ＣＨ2 ＯＨ〕、エリトリ
ット〔ＣＨ2 ＯＨ（ＣＨＯＨ）2 ＣＨ2 ＯＨ〕、又は還
元澱粉糖化物等が好ましく用いられる。Thus, the general molecular formula Cn Hm OHx
0.1% to 30% by weight of a saturated chain hydrocarbon-based polyhydric alcohol represented by (where n = 4 to 12 and x = 4 to 11)
By adding a predetermined amount of an additive such as an antiseptic agent, a rust preventive agent, and an antifoaming agent to the contained aqueous solution, the freezing point is less lowered and the efficiency of the chiller unit can be improved. Where the general molecular formula C
n Hm OHx (where n = 4 to 12, x = 4 to 11)
Examples of the saturated chain hydrocarbon-based polyhydric alcohol represented by sorbitol [CH 2 OH (CHOH) 4 CH 2 O
H], maltitol [C 1 2 H 2 4 O 1 1 ], arabite [CH 2 OH (CHOH) 3 CH 2 OH], erythritol [CH 2 OH (CHOH) 2 CH 2 OH], or reduced starch saccharification product Etc. are preferably used.
【０００７】また、防腐剤としては、例えば、デヒドロ
酢酸ナトリウム等が好ましい。また、防錆剤としては、
例えば、炭酸カルシウム等が好ましい。また、消泡剤と
しては、例えば、シリコーン等が好ましい。また、飽和
鎖式炭化水素系多価アルコールの含有量は、０．１〜３
０ｗｔ％の範囲が好ましい。As the preservative, for example, sodium dehydroacetate and the like are preferable. Also, as a rust preventive agent,
For example, calcium carbonate or the like is preferable. Moreover, as the defoaming agent, for example, silicone is preferable. Further, the content of the saturated chain hydrocarbon-based polyhydric alcohol is 0.1 to 3
The range of 0 wt% is preferable.
【０００８】以下、図面により本発明の実施例を説明す
る。図１において、１０はチラーユニットであり、チラ
ーユニット１０は、冷媒圧縮機１１、冷媒凝縮器１２、
膨張弁１３、冷媒蒸発器（製氷器）１４、アキュームレ
ター１５により構成されている。このチラーユニット１
０の冷媒には、Ｒ２２を用いている。An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 10 is a chiller unit, and the chiller unit 10 includes a refrigerant compressor 11, a refrigerant condenser 12,
It comprises an expansion valve 13, a refrigerant evaporator (ice maker) 14, and an accumulation letter 15. This chiller unit 1
R22 is used as the 0 refrigerant.
【０００９】一方、冷媒蒸発器（製氷器）１４に連通す
る閉管路１６には、濃度３０ｗｔ％のＤーソルビトール
水溶液が封入されている。上記冷媒圧縮機１１で圧縮さ
れた冷媒（Ｒ２２）は、冷媒凝縮器１２で凝縮された
後、膨張弁１３を経て冷媒蒸発器（製氷器）１４に至
る。この冷媒蒸発器（製氷器）１４において、閉管路１
６内を循環するＤ−ソルビトール水溶液Ｗ1の一部が凍
結してシャーベット状の氷スラリー（Ｄ−ソルビトール
水溶液＋氷）Ｗ2 となる。On the other hand, a closed pipe 16 communicating with the refrigerant evaporator (ice maker) 14 is filled with an aqueous D-sorbitol solution having a concentration of 30 wt%. The refrigerant (R22) compressed by the refrigerant compressor 11 is condensed by the refrigerant condenser 12 and then reaches the refrigerant evaporator (ice maker) 14 through the expansion valve 13. In this refrigerant evaporator (ice maker) 14, the closed pipe line 1
A part of the D-sorbitol aqueous solution W 1 circulating in 6 is frozen to be a sherbet-like ice slurry (D-sorbitol aqueous solution + ice) W 2 .
【００１０】[0010]
【実施例】氷蓄熱用熱輸送媒体として、濃度３０ｗｔ％
のエチレングリコール水溶液を用いた場合と濃度３０ｗ
ｔ％のＤーソルビトール水溶液を用いた場合のチラーユ
ニット（図１参照）の成績係数（ＣＯＰ）を比較し、そ
の結果を『表１』に示した。[Example] As a heat transport medium for ice heat storage, a concentration of 30 wt%
When using ethylene glycol aqueous solution, the concentration is 30w
The coefficient of performance (COP) of the chiller unit (see FIG. 1) when using a t% aqueous D-sorbitol solution was compared, and the results are shown in "Table 1".
【００１１】 [0011]
【００１２】この『表１』によれば、エチレングリコー
ル水溶液を用いた時のＣＯＰは１．５６であり、Ｄーソ
ルビトール水溶液を用いた時のＣＯＰは１．９０である
から、１．９０／１．５６＝１．２２となり、Ｄーソル
ビトール水溶液を用いた方がＣＯＰが２２％アップする
ことが分かる。According to this "Table 1", the COP when using the ethylene glycol aqueous solution is 1.56, and the COP when using the D-sorbitol aqueous solution is 1.90, so 1.90 / 1. It becomes 0.56 = 1.22, and it can be seen that the COP is increased by 22% when the D-sorbitol aqueous solution is used.
【００１３】なお、設定条件は、以下の通りとした。 チラーユニットの冷媒凝縮器における冷媒凝縮温度
は、両者とも３５℃の飽和圧力でサブクール度は１０℃ チラーユニットの冷媒蒸発器（製氷器）における冷
媒蒸発温度は、熱輸送媒体の氷のできる温度（凝固点温
度）より、１０℃低い温度とする。The setting conditions are as follows. The refrigerant condensing temperature in the refrigerant condenser of the chiller unit is both at a saturation pressure of 35 ° C and the subcooling degree is 10 ° C. The refrigerant evaporating temperature in the refrigerant evaporator (ice maker) of the chiller unit is the temperature at which ice of the heat transport medium is formed ( 10 ° C lower than the freezing point temperature).
【００１４】・各水溶液の凝固点降下温度は、図２から ３０ｗｔ％のエチレングリコール水溶液の凝固点温度
… −１３℃ ３０ｗｔ％のＤーソルビトール水溶液の凝固点温度
… −５℃ ・各水溶液の冷媒蒸発温度は、 ３０ｗｔ％のエチレングリコール水溶液の凝固点温度
… −２３℃ ３０ｗｔ％のＤーソルビトール水溶液の凝固点温度
… −１５℃ チラーユニットの冷媒圧縮機入口における冷媒ガス
の加熱度は１０℃ チラーユニットの冷媒圧縮機の機械効率・モーター
効率等を掛算したら、５０％ 冷媒蒸発器から圧縮機入口までの圧力損失は、０．
０３kg／cm2 The freezing point lowering temperature of each aqueous solution is the freezing point temperature of the 30 wt% ethylene glycol aqueous solution from FIG.
... -13 ° C Freezing point temperature of 30 wt% D-sorbitol aqueous solution
… −5 ℃ ・ Evaporation temperature of the refrigerant of each aqueous solution is the freezing point of 30 wt% ethylene glycol aqueous solution.
--23 ° C. Freezing point temperature of 30 wt% D-sorbitol aqueous solution
The temperature of the refrigerant gas at the -15 ° C chiller unit inlet is 50% when the mechanical efficiency and motor efficiency of the 10 ° C chiller unit refrigerant compressor are multiplied by the pressure loss from the refrigerant evaporator to the compressor inlet. Is 0.
03 kg / cm 2
【００１５】[0015]
【発明の効果】上記のように、本発明は、一般分子式Ｃ
n Ｈm ＯＨx （ここで、n ＝４〜１２，x ＝４〜１１）
で表される飽和鎖式炭化水素系多価アルコールを０．１
〜３０ｗｔ％含有する水溶液に防腐剤、防錆剤、消泡剤
等の添加剤を所定量添加したので、凝固点降下が少な
く、チラーユニットの効率が大幅に向上するようになっ
た。As described above, the present invention has the general molecular formula C
n Hm OHx (where n = 4 to 12, x = 4 to 11)
Saturated chain hydrocarbon polyhydric alcohol represented by
Since a predetermined amount of additives such as antiseptics, rust preventives and defoaming agents were added to the aqueous solution containing 30 wt% of the chiller unit, the chiller unit efficiency was greatly improved.
【図１】チラーユニットの概略図である。FIG. 1 is a schematic view of a chiller unit.
【図２】各種蓄熱剤濃度（ｗｔ％）と凝固点温度（℃）
との関係を示す図である。[Fig. 2] Concentration of various heat storage agents (wt%) and freezing point temperature (° C)
It is a figure which shows the relationship with.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 渡辺 敬一 千葉県市原市八幡海岸通１番地 三井造船 株式会社千葉事業所内 (72)発明者 永森 茂 千葉県市原市八幡海岸通１番地 三井造船 株式会社千葉事業所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Keiichi Watanabe 1 Yachiman Kaigan Dori, Ichihara City, Chiba Mitsui Engineering & Shipbuilding Co., Ltd. (72) Shigeru Nagamori 1 Hachiman Kaido Dori, Ichihara, Chiba Mitsui Engineering & Ships Co., Ltd. Chiba office
Claims (1)
＝４〜１２，x ＝４〜１１）で表される飽和鎖式炭化水
素系多価アルコールを０．１〜３０ｗｔ％含有する水溶
液に防腐剤、防錆剤、消泡剤等の添加剤を所定量添加し
たことを特徴とする氷蓄熱用熱輸送媒体。1. The general molecular formula Cn Hm OHx (where n
= 4 to 12, x = 4 to 11), an additive containing a preservative, a rust preventive, an antifoaming agent, etc. is added to an aqueous solution containing 0.1 to 30 wt% of a saturated chain hydrocarbon polyhydric alcohol represented by A heat transport medium for ice heat storage, characterized by being added in a predetermined amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4209190A JPH0657242A (en) | 1992-08-05 | 1992-08-05 | Heat-transport medium for ice heat storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4209190A JPH0657242A (en) | 1992-08-05 | 1992-08-05 | Heat-transport medium for ice heat storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0657242A true JPH0657242A (en) | 1994-03-01 |
Family
ID=16568846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4209190A Pending JPH0657242A (en) | 1992-08-05 | 1992-08-05 | Heat-transport medium for ice heat storage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0657242A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2015063638A (en) * | 2013-09-26 | 2015-04-09 | トッパン・フォームズ株式会社 | Cold-insulation tool |
-
1992
- 1992-08-05 JP JP4209190A patent/JPH0657242A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2015063638A (en) * | 2013-09-26 | 2015-04-09 | トッパン・フォームズ株式会社 | Cold-insulation tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20010213 |