JPH0261443A - Cooling water feeding device - Google Patents
Cooling water feeding deviceInfo
- Publication number
- JPH0261443A JPH0261443A JP21298488A JP21298488A JPH0261443A JP H0261443 A JPH0261443 A JP H0261443A JP 21298488 A JP21298488 A JP 21298488A JP 21298488 A JP21298488 A JP 21298488A JP H0261443 A JPH0261443 A JP H0261443A
- Authority
- JP
- Japan
- Prior art keywords
- heat storage
- cooling medium
- heat accumulating
- heat
- cold 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
- 239000000498 cooling water Substances 0.000 title claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000002826 coolant Substances 0.000 claims abstract description 42
- 239000002775 capsule Substances 0.000 claims abstract description 26
- 238000005338 heat storage Methods 0.000 claims description 66
- 239000011232 storage material Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 abstract description 11
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
Landscapes
- Other Air-Conditioning Systems (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、冷水供給装置に関し、空羽器等で使用する
ための冷水を得るために、水道水等を冷却して冷水を製
造供給する装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a chilled water supply device, which produces and supplies chilled water by cooling tap water, etc., in order to obtain chilled water for use in an air blower, etc. It is related to the device.
第２図は、従来における冷水供給装置の概略構成を示し
ており、これは、水の潜熱を冷却作用に利用した氷蓄熱
システムと呼ばれているものである。この冷水供給装置
の基本的な構造を説明すると、チラーユニット１では、
適当な冷却媒体が、通常の冷凍サイクル等で冷却され、
冷却された冷却媒体は冷却媒体配管２を流れ、この冷却
媒体配管２の一部である熱交換部２ａが配置された蓄熱
槽３の内部を通過し、再び冷却媒体配管２を経てチラー
ユニットｌに帰る。蓄熱槽３の内部で冷却媒体配管２の
熱交換部２ａの外側には水が満たされており、この水は
、冷水配管４を通って、空調器等の放熱器５と蓄熱槽３
の間を循環している。FIG. 2 shows a schematic configuration of a conventional cold water supply system, which is called an ice heat storage system that utilizes the latent heat of water for cooling. To explain the basic structure of this cold water supply device, the chiller unit 1 has:
A suitable cooling medium is cooled in a normal refrigeration cycle, etc.
The cooled coolant flows through the coolant pipe 2, passes through the inside of the heat storage tank 3 in which the heat exchange section 2a, which is a part of the coolant pipe 2, is arranged, and passes through the coolant pipe 2 again to the chiller unit l. Return to Inside the heat storage tank 3, the outside of the heat exchange part 2a of the coolant pipe 2 is filled with water, and this water passes through the cold water pipe 4 and is transferred to a radiator 5 such as an air conditioner and the heat storage tank 3.
circulating between.
このような冷水供給装置の冷却作用は、チラーユニット
１で０℃以下に冷却された冷却媒体が、蓄熱槽３内の熱
交換部２ａに供給されることによって、熱交換部２ａの
配管の周囲で、水が凍って氷層Ｑが形成される。氷槽Ｑ
の周囲の水は蓄熱槽３と放熱器５との間を循環して流れ
ているので、氷層Ｑとの間で熱交換されて冷水となる。The cooling effect of such a cold water supply device is achieved by supplying the cooling medium cooled to 0° C. or lower in the chiller unit 1 to the heat exchange section 2a in the heat storage tank 3. Then, the water freezes and an ice layer Q is formed. Ice tank Q
Since the water around the water circulates between the heat storage tank 3 and the radiator 5, it exchanges heat with the ice layer Q and becomes cold water.
詳しく説明すると、氷ＮＱが相変化を起こす際、すなわ
ち氷が熔ける際に、水から熱を奪うことによって水を冷
却する。このように、氷の相変化に伴う潜熱を利用して
効率的に冷水を得ているのである。To explain in detail, when the ice NQ undergoes a phase change, that is, when the ice melts, the water is cooled by removing heat from the water. In this way, cold water is efficiently obtained by utilizing the latent heat that accompanies the phase change of ice.
つぎに、第３図に示す冷水供給装置は、上記した第２図
の冷水供給装置を改良したもので、砕氷式氷蓄熱システ
ムと呼ばれているものである。Next, the cold water supply device shown in FIG. 3 is an improved version of the cold water supply device shown in FIG. 2 described above, and is called an ice crushing type ice heat storage system.
この装置では、チラーユニット１内で、冷水配管４を流
れる水が０℃以下に冷却されて製氷された後、チラーユ
ニット１内の砕氷部１ａでシャーベット状に砕氷され、
いわゆるリキッドアイスＱ′の状態にされて、蓄熱槽３
に送りこまれる。蓄熱槽３内では、リキッドアイスＱ′
と水との間で熱交換されて、冷却された冷水が放熱器５
へと供給されるようになっている。この装置によれば、
氷をシャーベット状のリキッドアイスＱ′にすることに
よって、前記第２図の装置に比べて、製氷のエネルギー
効率（ＣＯＰ）を向上できること、蓄熱３内での氷充愼
率を向上できること等の利点がある。In this device, the water flowing through the cold water pipe 4 is cooled to below 0°C to make ice in the chiller unit 1, and then the ice is crushed into a sherbet shape in the ice crushing section 1a in the chiller unit 1.
The heat storage tank 3 is in a state of so-called liquid ice Q'.
sent to. In the heat storage tank 3, liquid ice Q'
Heat is exchanged between the water and the cooled water, and the cooled water is sent to the radiator 5.
It is now being supplied to According to this device,
By converting the ice into sherbet-like liquid ice Q', the advantages include being able to improve the energy efficiency (COP) of ice making and the ability to improve the ice filling rate in the heat storage 3 compared to the device shown in FIG. There is.
〔発明が解決しようとする課題〕
ところが、上記した従来の冷水供給装置は、何れも、製
氷に０℃以下の冷熱源を必要とするため、エネルギーコ
ストが高いという欠点がある。これは、氷としてリキッ
ドアイスを使う場合でも同様である。また、製氷部や砕
氷部を装置内に設ける必要があるので、装置全体の規模
が大きくなり設備コストや稼動コストが高くつく。さら
に、氷の相変化に伴って、氷（または水）の体積が大き
く変化するので、氷と熱交換する周囲の水との伝熱面積
が、その度に変化して一定にならないため、熱交換の状
態または能率も変化することになり、このような熱交換
によって製造される冷水の温度を制御するのが難しいと
いう問題もあった。[Problems to be Solved by the Invention] However, all of the conventional cold water supply devices described above require a cold heat source of 0° C. or lower for ice making, and therefore have the drawback of high energy costs. This also applies when liquid ice is used as ice. Furthermore, since it is necessary to provide an ice making section and an ice crushing section within the device, the scale of the entire device becomes large and equipment costs and operating costs become high. Furthermore, as the ice (or water) changes its volume, the heat transfer area between the ice and the surrounding water changes each time and is not constant. The conditions or efficiency of the exchange also changes, and there is also the problem that it is difficult to control the temperature of the cold water produced by such heat exchange.
そこで、この発明の課題は、上記のような、従来の冷水
供給装置の問題点を解消し、０℃以下の冷熱源を必要と
せず、装置の構造が簡単で、温度制御も容易な冷水供給
装置を提供することにある〔課題を解決するための手段
〕
上記課題を解決する、この発明の冷水供給装置は、冷却
媒体と水との間で熱交換することによって水を冷却して
冷水を得る装置において、冷却媒体が循環供給される蓄
熱槽と、蓄熱槽の内部で冷却媒体の流路中に収容された
蓄熱材カプセルと、蓄熱槽の蓄熱材カプセルおよび冷却
媒体に隣接するように水が供給される冷水配管とを備え
るようにしている。Therefore, the object of this invention is to solve the above-mentioned problems of conventional cold water supply devices, to supply cold water that does not require a cold heat source below 0 degrees Celsius, has a simple structure, and is easy to control temperature. [Means for Solving the Problems] A cold water supply device of the present invention that solves the above problems cools water by exchanging heat between a cooling medium and water to produce cold water. The apparatus includes a heat storage tank to which a cooling medium is circulated and supplied, a heat storage material capsule housed in a flow path of the cooling medium inside the heat storage tank, and a water storage tank adjacent to the heat storage material capsule and the cooling medium of the heat storage tank. The system is equipped with cold water piping to which water is supplied.
蓄熱槽では、まず、冷却媒体と蓄熱材カプセルへとの間
で熱交換が行われて、蓄熱材カプセルに冷熱が蓄えられ
る。ついで、蓄熱槽に隣接する冷水配管の水と蓄熱材カ
プセルおよび冷却媒体との間で熱交換が行われることに
よって、冷水が製造される。蓄熱材カプセルは、０℃以
上の温度で相変化を起こすようにできるので、冷却媒体
で０℃以下に冷却する必要がない。また、蓄熱材カプセ
ルは、相変化に伴って体積変化を起こさないので、蓄熱
材カプセルの伝熱面積、もしくは熱交換面積は一定であ
り、冷却媒体の流量を調整するだけで、熱交換量すなわ
ち製造される冷水の温度制御を簡単に行うことができる
。In the heat storage tank, first, heat is exchanged between the cooling medium and the heat storage material capsule, and cold heat is stored in the heat storage material capsule. Next, cold water is produced by heat exchange between the water in the cold water pipe adjacent to the heat storage tank, the heat storage material capsule, and the cooling medium. Since the heat storage material capsule can undergo a phase change at a temperature of 0° C. or higher, there is no need to cool it to 0° C. or lower using a cooling medium. In addition, since the heat storage material capsule does not undergo a volume change due to phase change, the heat transfer area or heat exchange area of the heat storage material capsule is constant, and the heat exchange amount or heat exchange area is constant by simply adjusting the flow rate of the cooling medium. The temperature of the produced cold water can be easily controlled.
ついで、この発明にかかる冷水供給装置を、実施例を示
す図面を参照しながら、以下に詳しく説明する。Next, the cold water supply device according to the present invention will be described in detail below with reference to the drawings showing embodiments.
第１図は、冷水供給装置の概略構成を示しており、チラ
ーユニット１０は、各種の冷凍装置等に用いられている
ものと同様に、適当な冷凍サイクルによって、冷却媒体
を冷却するものであり、通常はヒートポンプの蒸発器等
が用いられる。冷却媒体としては、通常の冷媒またはブ
ラインを使用できる。この発明においては、冷却媒体と
熱交換する蓄熱材の融点を０℃よりも高く設定できるの
で、冷却媒体は０℃以下での使用を考慮して特殊な冷媒
を選定する必要がなく、例えば、冷却媒体として水を使
用することもできる。水を使用すれば、取り扱いが容易
でコストも易く、装置全体のコストダウンを図ることも
できる利点がある。FIG. 1 shows a schematic configuration of a chilled water supply device, and a chiller unit 10 cools a cooling medium using an appropriate refrigeration cycle, similar to those used in various refrigeration devices. , usually a heat pump evaporator or the like is used. As cooling medium, conventional refrigerants or brine can be used. In this invention, since the melting point of the heat storage material that exchanges heat with the cooling medium can be set higher than 0°C, there is no need to select a special cooling medium in consideration of use at temperatures below 0°C. Water can also be used as a cooling medium. The use of water has the advantage of being easy to handle and inexpensive, and reducing the cost of the entire device.
チラーユニット１０には冷却媒体配管２０が接続してあ
り、冷却媒体配管２０は蓄熱槽３０に接続され、チラー
ユニット１０と蓄熱槽３０との間で冷却媒体を循環させ
るようになっている。冷却媒体配管２０の途中にはポン
プ２１が設置されており、このポンプ２１で冷却媒体の
流量を制御することによって、製造される冷水の温度制
御が行える。A coolant pipe 20 is connected to the chiller unit 10, and the coolant pipe 20 is connected to a heat storage tank 30, so that the coolant is circulated between the chiller unit 10 and the heat storage tank 30. A pump 21 is installed in the middle of the coolant pipe 20, and by controlling the flow rate of the coolant with this pump 21, the temperature of the produced cold water can be controlled.
蓄熱槽３０は、図示したドラム状等の適当な外形を有し
、内部空間が冷却媒体Ｃの流路となる。The heat storage tank 30 has an appropriate external shape such as the drum shape shown in the figure, and the internal space serves as a flow path for the cooling medium C.
また、蓄熱槽３０には、蓄熱材カプセル４０が多数収容
されていて、流れている冷却媒体Ｃの中に蓄熱材カプセ
ル４０が分散している状態になっている。但し、蓄熱材
カプセル４０は、冷却媒体Ｃとともに蓄熱槽３０の外に
流れ出ることなくＭ熱槽３０内に留まるようにしておく
。Further, a large number of heat storage material capsules 40 are housed in the heat storage tank 30, and the heat storage material capsules 40 are dispersed in the flowing cooling medium C. However, the heat storage material capsule 40 is kept in the M heat tank 30 without flowing out of the heat storage tank 30 together with the cooling medium C.
蓄熱材カプセル４０は、適当な蓄熱材を樹脂カプセル内
に封入させたものである。蓄熱材は、自らが熔融すると
きに、隣接する周囲の物体から潜熱を奪うものであり、
具体的な蓄熱材としては、融点が０℃より高く、７〜８
℃以下程度のものが用いられる。蓄熱材の材料は、各種
用途で使用されている通常の蓄熱材料が使用できるが、
具体的には、例えば、三菱油化製アゾカサ−モト７プ５
（融点５℃）が挙げられる。蓄熱材をカプセル化する方
法としては、蓄熱材を、ポリエチレンペレット等の担体
に高温下ディッピングで膨潤担持させ、これに適宜樹脂
からなるコーテイング材でスプレーコーティングを施せ
ば、蓄熱材カプセル４０が得られる。コーテイング材と
しては、蓄熱材の染み出しを防止できるような材料を用
いる。このようなコーテイング材の材料としては、変性
ウレタン系樹脂、変性エポキシ系樹脂等のエマルジョン
溶液が適当である。上記のように蓄熱材をカプセル化す
ることによって、表面積すなわち熱交換面積を極めて大
きくすることができ、熱交換効率を向上できる。また、
予め、カプセル化された蓄熱材であるので、リキッドア
イスのように、製氷後に装置内で砕氷する必要がない。The heat storage material capsule 40 is a resin capsule in which a suitable heat storage material is encapsulated. When a heat storage material melts, it absorbs latent heat from neighboring objects.
As a specific heat storage material, the melting point is higher than 0℃, 7 to 8
Temperatures below ℃ are used. As the material for the heat storage material, ordinary heat storage materials used for various purposes can be used.
Specifically, for example, Mitsubishi Yuka Azokasa Moto 7 P5
(melting point: 5°C). As a method for encapsulating the heat storage material, the heat storage material is allowed to swell and support a carrier such as polyethylene pellets by dipping at high temperature, and the heat storage material capsules 40 are obtained by spray coating this with a coating material made of an appropriate resin. . As the coating material, a material that can prevent the heat storage material from seeping out is used. As a material for such a coating material, an emulsion solution of modified urethane resin, modified epoxy resin, etc. is suitable. By encapsulating the heat storage material as described above, the surface area, that is, the heat exchange area, can be made extremely large, and the heat exchange efficiency can be improved. Also,
Since it is a heat storage material that has been encapsulated in advance, unlike liquid ice, there is no need to crush the ice within the device after ice making.
さらに、蓄熱材の相変化が生じてもカプセル全体の体積
変化は生じない。Furthermore, even if a phase change occurs in the heat storage material, the volume of the entire capsule does not change.
蓄熱槽３０の外周には、冷水配管５０の熱交換部５４が
螺旋状に巻き付いた状態で接触するように配置されてい
る。冷水配管５０の一端側５１は、水道水等の供給源に
連結されるとともに、蓄熱槽３０までの途中に冷水供給
用のポンプ５３が設置されている。冷水配管５０の他端
側５２は、空調用の放熱器等、冷水を必要とする適宜機
器類に連結される。そして、冷水配管５０の熱交換部５
４内を流れる水と、隣接する蓄熱槽３０の蓄熱材カプセ
ル４０および冷却媒体Ｃとの間で熱交換が行われて、冷
水が製造される。冷水配管５０の熱交換部５４と蓄熱槽
３０との配置形状は、図示した配置形状以外のものでも
実施でき、例えば、蓄熱槽３０の内部を通過するように
、熱交換部５４が配置されたものでもよい。すなわち、
冷水配管５０の熱交換部５４内の水と蓄熱槽３０内の蓄
熱材カプセル４０および冷却媒体Ｃとが互いに隣接して
いて、その間で熱交換を効率良く行えればよいのである
。The heat exchange part 54 of the cold water pipe 50 is arranged so as to be in contact with the outer periphery of the heat storage tank 30 in a spirally wound state. One end 51 of the cold water pipe 50 is connected to a supply source such as tap water, and a pump 53 for supplying cold water is installed on the way to the heat storage tank 30. The other end 52 of the cold water pipe 50 is connected to appropriate equipment that requires cold water, such as a radiator for air conditioning. Then, the heat exchange section 5 of the cold water pipe 50
Heat exchange is performed between the water flowing in the heat storage tank 4 and the heat storage material capsule 40 and the cooling medium C of the adjacent heat storage tank 30, thereby producing cold water. The arrangement shape of the heat exchange part 54 of the cold water pipe 50 and the heat storage tank 30 may be other than the arrangement shape shown in the figure. For example, the heat exchange part 54 is arranged so as to pass through the inside of the heat storage tank 30. It can be anything. That is,
It is sufficient that the water in the heat exchange section 54 of the cold water pipe 50, the heat storage material capsule 40 in the heat storage tank 30, and the cooling medium C are adjacent to each other and that heat exchange can be performed efficiently between them.
この発明の冷水供給装置は、図示した実施例のような基
本構造以外にも、通常の冷水供給装置に設けられる各種
の付属装置や機構を組み合わせて構成することができる
。In addition to the basic structure shown in the illustrated embodiment, the cold water supply device of the present invention can be constructed by combining various accessory devices and mechanisms provided in ordinary cold water supply devices.
以上に述べた、この発明にかかる冷水供給装置によれば
、従来の氷蓄熱システムにおける氷に替えて、蓄熱材カ
プセルを用いているので、氷のように０℃以下に冷却す
る必要が無くなり、冷熱源のエネルギー効率が向上し、
冷却に要するエネルギーコストが安くなる。製氷部や砕
氷部等の機構が必要ないので、装置全体の構造が簡単で
コンパクトになり、設備コストも安くなる。さらに、蓄
熱材カプセルは相変化によって体積変化を起さず熱交換
面積が一定しているので、熱交換によって製造される冷
水の温度制御が容易になり、用途に応じて必要な温度に
正確に温度制御された冷水を供給することができる。According to the above-described cold water supply device according to the present invention, a heat storage material capsule is used instead of ice in a conventional ice heat storage system, so there is no need to cool the water to below 0°C unlike ice. The energy efficiency of cooling and heat sources is improved,
Energy costs required for cooling are reduced. Since mechanisms such as an ice making section and an ice crushing section are not required, the structure of the entire device is simple and compact, and equipment costs are also reduced. Furthermore, since the heat storage material capsule does not change its volume due to phase changes and has a constant heat exchange area, it is easy to control the temperature of cold water produced by heat exchange, and the temperature can be adjusted precisely to the required temperature depending on the application. Temperature-controlled cold water can be supplied.
第１図はこの発明の実施例を示す概略構成図、第２図お
よび第３図は従来例の概略構成図である１０・・・チラ
ーユニット ２０・・・冷却媒体配管３０・・・蓄熱槽
４０・・・蓄熱材カプセル
水配管
Ｃ・・・冷却媒体FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention, and FIGS. 2 and 3 are schematic configuration diagrams of a conventional example. 10 Chiller unit 20 Cooling medium piping 30 Heat storage tank 40... Heat storage material capsule water piping C... Cooling medium
Claims (1)
却して冷水を得る装置において、冷却媒体が循環供給さ
れる蓄熱槽と、蓄熱槽の内部で冷却媒体の流路中に収容
された蓄熱材カプセルと、蓄熱槽の蓄熱材カプセルおよ
び冷却媒体に隣接するように水が供給される冷水配管と
を備えていることを特徴とする冷水供給装置。1. In a device that cools water by exchanging heat between the cooling medium and water to obtain cold water, there is a heat storage tank to which the cooling medium is circulated and supplied, and a heat storage tank that is housed in the flow path of the cooling medium inside the heat storage tank. 1. A cold water supply device comprising: a heat storage material capsule of a heat storage tank; and a cold water pipe to which water is supplied adjacent to the heat storage material capsule and the cooling medium of a heat storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21298488A JPH0261443A (en) | 1988-08-26 | 1988-08-26 | Cooling water feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21298488A JPH0261443A (en) | 1988-08-26 | 1988-08-26 | Cooling water feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0261443A true JPH0261443A (en) | 1990-03-01 |
Family
ID=16631544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21298488A Pending JPH0261443A (en) | 1988-08-26 | 1988-08-26 | Cooling water feeding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0261443A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009019857A (en) * | 2007-07-13 | 2009-01-29 | Kagoshima Univ | Cold energy storage microcapsule and ice storage air conditioning system using the same |
| WO2013042273A1 (en) * | 2011-09-21 | 2013-03-28 | ナサコア株式会社 | Air-conditioning device |
| KR20210047450A (en) * | 2019-10-22 | 2021-04-30 | 최원근 | Tap water cold / hot water management system |
-
1988
- 1988-08-26 JP JP21298488A patent/JPH0261443A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009019857A (en) * | 2007-07-13 | 2009-01-29 | Kagoshima Univ | Cold energy storage microcapsule and ice storage air conditioning system using the same |
| WO2013042273A1 (en) * | 2011-09-21 | 2013-03-28 | ナサコア株式会社 | Air-conditioning device |
| KR20210047450A (en) * | 2019-10-22 | 2021-04-30 | 최원근 | Tap water cold / hot water management system |
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