JPH0781745B2 - Heat storage heat exchange device using supercooling heat storage material - Google Patents
Heat storage heat exchange device using supercooling heat storage materialInfo
- Publication number
- JPH0781745B2 JPH0781745B2 JP63254957A JP25495788A JPH0781745B2 JP H0781745 B2 JPH0781745 B2 JP H0781745B2 JP 63254957 A JP63254957 A JP 63254957A JP 25495788 A JP25495788 A JP 25495788A JP H0781745 B2 JPH0781745 B2 JP H0781745B2
- Authority
- JP
- Japan
- Prior art keywords
- heat storage
- heat
- storage material
- exchange device
- liquid
- 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
- 238000005338 heat storage Methods 0.000 title claims description 113
- 239000011232 storage material Substances 0.000 title claims description 40
- 238000004781 supercooling Methods 0.000 title claims description 12
- 239000007788 liquid Substances 0.000 claims description 26
- 238000009413 insulation Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000010926 purge Methods 0.000 description 5
- 230000000638 stimulation Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- DGPIGKCOQYBCJH-UHFFFAOYSA-M sodium;acetic acid;hydroxide Chemical compound O.[Na+].CC([O-])=O DGPIGKCOQYBCJH-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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
Description
【発明の詳細な説明】 [産業上の利用分野] 本発明は、蓄熱体に供給した熱エネルギーを、その蓄熱
体の周囲を通って流通する液体を介して取り出すように
した蓄熱熱交換装置に関する。Description: TECHNICAL FIELD The present invention relates to a heat storage heat exchange device in which heat energy supplied to a heat storage body is taken out through a liquid circulating around the heat storage body. .
[従来の技術] 従来、断熱箱の内部に複数個の蓄熱体を配し、各蓄熱体
に電気ヒータを備え、電気ヒータにて各蓄熱体に熱エネ
ルギーを供給し、かつその断熱箱の内部に液体を流通さ
せて熱エネルギーを取り出すようにした蓄熱熱交換装置
がある。この種の蓄熱熱交換装置の蓄熱体は、通常、供
給された熱エネルギーを常時少しずつその熱エネルギー
がなくなるまで放出する物質を蓄熱材(これを以下「一
般蓄熱材」と呼ぶ)として使用している。即ち、その蓄
熱材は断熱しない限り熱エネルギーを長時間に渡って保
持することができない。[Prior Art] Conventionally, a plurality of heat storage bodies are arranged inside the heat insulation box, each heat storage body is provided with an electric heater, and heat energy is supplied to each heat storage body by the electric heater, and the inside of the heat insulation box is provided. There is a heat storage heat exchange device in which a liquid is circulated to take out heat energy. The heat storage body of this type of heat storage heat exchange device usually uses a substance that constantly releases the supplied heat energy little by little until the heat energy runs out (hereinafter referred to as "general heat storage material"). ing. That is, the heat storage material cannot retain heat energy for a long time unless it is thermally insulated.
最近では、過冷却性質をもつ蓄熱材が提案されている。
その蓄熱材は、ある温度まで加熱されるとゲル状にな
り、潜熱を蓄える。一旦蓄えられた潜熱は、蓄熱材が冷
えても放出されない。このため蓄熱材は、その温度が室
温と同じになってもゲル状を保つ。従って、この蓄熱材
は、断熱することなく熱を潜熱の形で長時間に亘って蓄
えることが可能である。一方、蓄熱材に適当な刺激を加
えると、この蓄熱材は、活性化して固体に戻る。Recently, a heat storage material having a supercooling property has been proposed.
When the heat storage material is heated to a certain temperature, it turns into a gel and stores latent heat. The latent heat once stored is not released even if the heat storage material cools. Therefore, the heat storage material maintains the gel state even when the temperature becomes the same as room temperature. Therefore, this heat storage material can store heat in the form of latent heat for a long time without insulating it. On the other hand, when a suitable stimulus is applied to the heat storage material, the heat storage material is activated and returns to a solid state.
(例えば、特開昭61-197921号公報参照) [発明が解決しようとする課題] 一般蓄熱材を用いた蓄熱熱交換装置は、上述からも分る
ように、供給された熱エネルギーを長時間後に取り出す
のには適しない。例えば、夜間電力を使用して熱エネル
ギーを供給し、それを他の時点で取り出すようにした場
合には、エネルギー効率が低下する。したがって夜間電
力が比較的安価に入手できるにもかかわらず、蓄熱熱交
換装置の運転コストが高いものになってしまう。(For example, refer to Japanese Patent Laid-Open No. 61-197921) [Problems to be Solved by the Invention] A heat storage heat exchange device using a general heat storage material, as can be seen from the above, supplies the supplied heat energy for a long time. Not suitable for later retrieval. For example, if the nighttime electric power is used to supply the heat energy and take it out at another time, the energy efficiency is lowered. Therefore, although the nighttime electric power can be obtained relatively inexpensively, the operation cost of the heat storage heat exchange device becomes high.
そこで一般蓄熱材に代えて上述の過冷却性質をもつ蓄熱
材を使用することが考えられる。それによると、比較的
安価な夜間電力を有効に利用できるようになる。しかも
複数の蓄熱体の蓄冷材の過冷却状態を時間差をもって解
除することにより、周囲の液体の温度変動を比較的少な
く抑えることができる。Therefore, it is conceivable to use the heat storage material having the above supercooling property instead of the general heat storage material. According to this, relatively cheap nighttime electric power can be effectively used. Moreover, by canceling the supercooled state of the regenerator material of the plurality of regenerators with a time lag, the temperature fluctuation of the surrounding liquid can be suppressed to a relatively small level.
しかしながらその場合、複数の蓄熱体のうちの1つに熱
エネルギーを供給するために加熱すると、その熱が周囲
の液体を介して他の蓄熱体に伝わってその蓄熱体の蓄熱
材の過冷却状態を解除してしまう虞がある。However, in that case, when heating is performed to supply heat energy to one of the plurality of heat storage bodies, the heat is transmitted to other heat storage bodies via the surrounding liquid and the supercooled state of the heat storage material of the heat storage body. May be canceled.
それ故に本発明の課題は、過冷却性質をもつ蓄熱材を有
する蓄熱体を複数個断熱箱内に収容し、これらの蓄熱体
に供給した熱エネルギーを、その蓄熱体の周囲を通って
流通する液体を介して取り出すようにした蓄熱熱交換装
置を提供することにある。Therefore, an object of the present invention is to accommodate a plurality of heat storage bodies having a heat storage material having a supercooling property in an adiabatic box, and to distribute the thermal energy supplied to these heat storage bodies through the periphery of the heat storage bodies. It is an object of the present invention to provide a heat storage heat exchange device which is taken out through a liquid.
本発明の他の課題は、過冷却性質をもつ蓄熱材を有する
蓄熱体を複数個断熱箱内に収容しているにもかかわら
ず、個々の蓄熱体への熱エネルギーの供給時に他の蓄熱
体の蓄熱部材の過冷却状態が解除されることを防止した
蓄熱熱交換装置を提供することにある。Another object of the present invention is to store a plurality of heat storage bodies each having a heat storage material having a supercooling property in an adiabatic box, but at the time of supplying thermal energy to each heat storage body, another heat storage body is provided. Another object of the present invention is to provide a heat storage heat exchange device capable of preventing the supercooled state of the heat storage member from being released.
[課題を解決するための手段] 本発明によれば、断熱箱の内部に複数個の蓄熱体を配
し、該各蓄熱体に電気ヒータを備え、該電気ヒータにて
該各蓄熱体に熱エネルギーを供給し、かつ上記断熱箱の
内部に液体を流通させて上記熱エネルギーを取り出すよ
うにした蓄熱熱交換装置において、上記断熱箱内の液体
を排除するための液体排除手段を含み、上記各蓄熱体
は、容器と、該容器内に収容した過冷却性質を持つ蓄熱
材と、該蓄熱材の過冷却状態を解除するための解除機構
とを有していることを特徴とする過冷却性蓄熱材を利用
した蓄熱熱交換装置が得られる。[Means for Solving the Problem] According to the present invention, a plurality of heat storage bodies are arranged inside a heat insulation box, each heat storage body is provided with an electric heater, and each heat storage body is heated by the electric heater. In a heat storage heat exchange device for supplying energy and for circulating a liquid inside the heat insulating box to take out the heat energy, including a liquid removing means for removing the liquid in the heat insulating box. The heat storage body has a container, a heat storage material having a supercooling property housed in the container, and a release mechanism for releasing a supercooled state of the heat storage material. A heat storage heat exchange device using a heat storage material is obtained.
[作用] 本発明の蓄熱熱交換装置においては、電気ヒータを駆動
することで各蓄熱体に熱エネルギーが供給される。蓄熱
材は過冷却状態にある。解除機構を駆動することで任意
の蓄熱体の蓄熱材の過冷却状態を解除できる。熱エネル
ギーの取り出しは、断熱箱内に液体を流通させ、この液
体を介して行われる。放熱後の蓄熱材に熱エネルギーを
供給するときには、断熱箱内から液体を排除し、この状
態でその蓄熱体に備えた電気ヒータを駆動する。この時
に他の蓄熱体に伝わる熱エネルギーは少なく抑えられ
る。したがって他の蓄熱体の蓄熱材の過冷却状態が解除
されてしまうことはない。[Operation] In the heat storage heat exchange device of the present invention, thermal energy is supplied to each heat storage body by driving the electric heater. The heat storage material is in a supercooled state. By driving the release mechanism, the supercooled state of the heat storage material of any heat storage body can be released. The heat energy is taken out by circulating a liquid in the heat insulation box and passing through the liquid. When heat energy is supplied to the heat storage material after radiating heat, liquid is removed from the inside of the heat insulation box, and the electric heater provided in the heat storage body is driven in this state. At this time, the thermal energy transmitted to the other heat storage bodies is suppressed to be small. Therefore, the supercooled state of the heat storage material of the other heat storage body is not released.
[実施例] 第1図は本発明の一実施例による蓄熱熱交換装置を示
す。[Embodiment] FIG. 1 shows a heat storage heat exchange device according to an embodiment of the present invention.
この蓄熱熱交換装置は、内箱1と外箱2との間に断熱材
3を介在させた断熱箱4と、この断熱箱4の内部に互い
に間隔をおいて平行に配した複数の蓄熱体6とを含んで
いる。This heat storage heat exchange device includes a heat insulating box 4 in which a heat insulating material 3 is interposed between an inner box 1 and an outer box 2, and a plurality of heat storage bodies arranged in parallel inside the heat insulating box 4 at intervals. Includes 6 and.
断熱箱4は入口管7と出口管8を有し、これらを通して
水等の液体を内部に流通させることができるようになっ
ている。断熱箱4にはさらに、下部に水抜きパイプ11
と、上部のエアー注入パイプ12及びエアーパージパイプ
13とが備えられている。これらのパイプ11,12,13には、
水抜き弁15、エアー注入弁16、及びエアーパージ弁17が
それぞれ備えられている。The heat insulating box 4 has an inlet pipe 7 and an outlet pipe 8 through which a liquid such as water can be circulated inside. The heat insulating box 4 further has a drainage pipe 11 at the bottom.
And the upper air injection pipe 12 and air purge pipe
13 and are provided. In these pipes 11,12,13,
A water drain valve 15, an air injection valve 16 and an air purge valve 17 are provided respectively.
水抜き弁15とエアー注入弁16を開くと、水抜きパイプ11
を通して断熱箱4内の液体が流出するとともにエアー注
入パイプ12を通して空気が断熱箱4内に流入する。即
ち、断熱箱4の液体が排除される。したがって水抜きパ
イプ11、エアー注入パイプ12、水抜き弁15、及びエアー
注入弁16を合わせて、液体排除手段と呼ぶ。なおエアー
パージ弁17は断熱箱4内に液体を供給する際に空気を抜
くためのものである。When the drain valve 15 and the air injection valve 16 are opened, the drain pipe 11
The liquid in the heat insulating box 4 flows out through and the air flows into the heat insulating box 4 through the air injection pipe 12. That is, the liquid in the heat insulating box 4 is removed. Therefore, the water drain pipe 11, the air injection pipe 12, the water drain valve 15, and the air injection valve 16 are collectively referred to as liquid removing means. The air purge valve 17 is used to remove air when supplying the liquid into the heat insulating box 4.
一方、各蓄熱体6は、容器21と、この容器21内に収容し
た過冷却性質をもつ蓄熱材22と、この蓄熱材22の過冷却
状態を解除するための解除機構23とを有している。さら
に各蓄熱体6には、蓄熱材22に熱エネルギーを供給でき
る電気ヒータ24を備えている。この電気ヒータ24には断
熱箱4の外部に引き出した電気コード(図示せず)によ
り例えば商用電源を接続できるようにされている。On the other hand, each heat storage body 6 has a container 21, a heat storage material 22 having a supercooling property housed in the container 21, and a release mechanism 23 for releasing the supercooled state of the heat storage material 22. There is. Further, each heat storage body 6 is provided with an electric heater 24 capable of supplying heat energy to the heat storage material 22. An electric cord (not shown) led to the outside of the heat insulating box 4 can be connected to the electric heater 24, for example, a commercial power source.
蓄熱材22は、例えば、酢酸ナトリウム水和物(NaCH3COO
・3H2O)に多糖類を添加したものである。また解除機構
23は断熱箱4の外部から駆動できるものであり、機械的
刺激、電気的刺激、又は化学的刺激等、各種の手段であ
り得る。The heat storage material 22 is, for example, sodium acetate hydrate (NaCH 3 COO
・ 3H 2 O) with a polysaccharide added. Also release mechanism
23 can be driven from the outside of the heat insulating box 4, and may be various means such as mechanical stimulation, electrical stimulation, or chemical stimulation.
上述蓄熱熱交換装置においては、電気ヒータ24を駆動す
ることで各蓄熱体6に熱エネルギーが供給される。蓄熱
材22は過冷却状態にある。解除機構23を駆動することで
任意の蓄熱体6の蓄熱材22の過冷却状態を解除できる。
熱エネルギーの取り出しは、断熱箱4内に水等の液体を
流通させ、この液体を介して即ち、加温された液体を断
熱箱4から取り出すことで行われる。In the heat storage heat exchange device described above, the heat energy is supplied to each heat storage body 6 by driving the electric heater 24. The heat storage material 22 is in a supercooled state. By driving the release mechanism 23, the supercooled state of the heat storage material 22 of the heat storage body 6 can be released.
The heat energy is taken out by circulating a liquid such as water in the heat insulating box 4 and taking out the heated liquid from the heat insulating box 4 via this liquid.
放熱後の蓄熱材22に熱エネルギーを供給するときには、
上述の液体排除手段により断熱箱4内から液体を排除
し、この状態でその蓄熱体6に備えた電気ヒータ24を駆
動する。この作業は、公知の手段を用いて自動的に行う
ことが望ましい。電気ヒータ24の駆動時には蓄熱体6間
には空気のみが介在しているため、他の蓄熱体6に伝わ
る熱エネルギーは水が介在している場合に比べて少なく
抑えられる。したがって他の蓄熱体6の蓄熱材22の過冷
却状態が解除されてしまうことはない。When supplying heat energy to the heat storage material 22 after heat dissipation,
The liquid is removed from the heat insulating box 4 by the liquid removing means described above, and the electric heater 24 provided in the heat storage body 6 is driven in this state. It is desirable that this work is automatically performed using a known means. Since only air is present between the heat storage bodies 6 when the electric heater 24 is driven, the thermal energy transmitted to the other heat storage bodies 6 is suppressed to be smaller than that when water is present. Therefore, the supercooled state of the heat storage material 22 of the other heat storage body 6 is not released.
第2図は第1図に示す蓄熱熱交換装置30を2個備えた家
庭用のエネルギー供給システムを示す。このエネルギー
供給システムは水導管31に接続され、適宜、水道水を供
給される。ポンプ32にて圧送された水は蓄熱交換装置30
にて第1図を用いて説明したように加温された上で、複
数の室内熱交換器33の任意のものに電磁弁又は電動弁34
を介して供給される。こうして室内を加温するのに役立
つ。温水を風呂や台所の蛇口36から取り出すようにして
もよい。FIG. 2 shows a domestic energy supply system provided with two heat storage heat exchange devices 30 shown in FIG. This energy supply system is connected to the water conduit 31 and is appropriately supplied with tap water. The water pumped by the pump 32 is the heat storage exchange device 30.
After being heated as described with reference to FIG. 1, a solenoid valve or a motorized valve 34 is attached to any of the plurality of indoor heat exchangers 33.
Is supplied via. This helps to warm the room. Hot water may be taken from the tap 36 in the bath or kitchen.
室内熱交換器33を通った後に、水はポンプ32にて蓄熱熱
交換装置30に戻される。即ち、水は蓄熱熱交換装置30を
通して循環する。After passing through the indoor heat exchanger 33, the water is returned to the heat storage heat exchange device 30 by the pump 32. That is, water circulates through the heat storage heat exchange device 30.
第1図及び第2図を合わせて参照して、任意の蓄熱体6
の蓄熱材22に熱エネルギーを供給するために断熱箱4か
ら排除した水はタンク37に一時的に貯溜され、その後
に、ポンプ32にて再使用される。Referring to FIG. 1 and FIG. 2 together, an arbitrary heat storage body 6
The water removed from the heat insulating box 4 in order to supply heat energy to the heat storage material 22 is temporarily stored in the tank 37, and then reused by the pump 32.
なお上述の蓄熱熱交換装置30は家庭用のエネルギー供給
システムに限らず、様々な分野で使用できることは言う
までもない。Needless to say, the heat storage heat exchange device 30 described above can be used in various fields, not limited to a home energy supply system.
[発明の効果] 以上説明したように、本発明によれば、過冷却性質をも
つ蓄熱材を有する蓄熱体を複数個断熱箱内に収容し、こ
れらの蓄熱体に供給した熱エネルギーを、その蓄熱体の
周囲を通って流通する液体を介して取り出すようにした
蓄熱熱交換装置を提供することができる。しかも、過冷
却性質をもつ蓄熱材を有する蓄熱体を複数個断熱箱内に
収容しているにもかかわらず、個々の蓄熱体への熱エネ
ルギーの供給時に他の蓄熱体の蓄熱部材の過冷却状態が
解除されることは防止される。[Effects of the Invention] As described above, according to the present invention, a plurality of heat storage bodies having a heat storage material having a supercooling property are accommodated in a heat insulating box, and the thermal energy supplied to these heat storage bodies is changed to It is possible to provide a heat storage heat exchange device that is configured to be taken out through a liquid that flows around the heat storage body. Moreover, even though a plurality of heat storage bodies each having a heat storage material having a supercooling property are accommodated in the heat insulation box, the supercooling of the heat storage members of the other heat storage bodies at the time of supplying thermal energy to each heat storage body. The state is prevented from being released.
第1図は本発明の一実施例による蓄熱熱交換装置の断面
図、第2図は第1図の蓄熱熱交換装置を使用した家庭用
のエネルギー供給システムを示す概略説明図である。 4……断熱箱、6……蓄熱体、7……入口管、8……出
口管、11……水抜きパイプ、12……エアー注入パイプ、
13……エアーパージパイプ、15……水抜き弁、16……エ
アー注入弁、17……エアーパージ弁、21……容器、22…
…蓄熱材、23……解除機構、24……電気ヒータ、30……
蓄熱熱交換装置。FIG. 1 is a sectional view of a heat storage heat exchange device according to an embodiment of the present invention, and FIG. 2 is a schematic explanatory view showing a domestic energy supply system using the heat storage heat exchange device of FIG. 4 ... Insulation box, 6 ... Heat storage body, 7 ... Inlet pipe, 8 ... Outlet pipe, 11 ... Drainage pipe, 12 ... Air injection pipe,
13 …… air purge pipe, 15 …… water drain valve, 16 …… air injection valve, 17 …… air purge valve, 21 …… container, 22…
… Heat storage material, 23 …… release mechanism, 24 …… electric heater, 30 ……
Heat storage heat exchange device.
Claims (1)
各蓄熱体に電気ヒータを備え、該電気ヒータにて該各蓄
熱体に熱エネルギーを供給し、かつ上記断熱箱の内部に
液体を流通させて上記熱エネルギーを取り出すようにし
た蓄熱熱交換装置において、上記断熱箱内の液体を排除
するための液体排除手段を含み、上記各蓄熱体は、容器
と、該容器内に収容した過冷却性質を持つ蓄熱材と、該
蓄熱材の過冷却状態を解除するための解除機構とを有
し、前記蓄熱体に前記ヒータによって熱エネルギーを供
給する場合には、前記断熱箱内の液体を排除することを
特徴とする過冷却性蓄熱材を利用した蓄熱熱交換装置。1. A plurality of heat storage bodies are arranged inside the heat insulation box, each heat storage body is provided with an electric heater, and thermal energy is supplied to each heat storage body by the electric heater, and the heat storage box of the heat insulation box is provided. In a heat storage heat exchange device in which a liquid is circulated inside to take out the thermal energy, a liquid removing means for removing the liquid in the heat insulating box is included, and each of the heat storage bodies is a container and the inside of the container. In the case where the heat storage material having a supercooling property accommodated in the heat storage material and a release mechanism for releasing the supercooled state of the heat storage material are supplied to the heat storage material by the heater, the heat insulation box is provided. A heat storage heat exchange device using a supercooling heat storage material, which is characterized in that liquid inside is removed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63254957A JPH0781745B2 (en) | 1988-10-12 | 1988-10-12 | Heat storage heat exchange device using supercooling heat storage material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63254957A JPH0781745B2 (en) | 1988-10-12 | 1988-10-12 | Heat storage heat exchange device using supercooling heat storage material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02103340A JPH02103340A (en) | 1990-04-16 |
JPH0781745B2 true JPH0781745B2 (en) | 1995-09-06 |
Family
ID=17272212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63254957A Expired - Lifetime JPH0781745B2 (en) | 1988-10-12 | 1988-10-12 | Heat storage heat exchange device using supercooling heat storage material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0781745B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11656455B2 (en) | 2018-07-27 | 2023-05-23 | Nifco Inc. | Planar heat generating body and vehicle windshield device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55137447A (en) * | 1979-04-11 | 1980-10-27 | Hitachi Ltd | Regenerative room heater |
JPS61208493A (en) * | 1985-03-14 | 1986-09-16 | Mitsubishi Corp | Latent heat utilizing heat storage device |
-
1988
- 1988-10-12 JP JP63254957A patent/JPH0781745B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH02103340A (en) | 1990-04-16 |
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