JPH0351668Y2 - - Google Patents
Info
- Publication number
- JPH0351668Y2 JPH0351668Y2 JP1985112867U JP11286785U JPH0351668Y2 JP H0351668 Y2 JPH0351668 Y2 JP H0351668Y2 JP 1985112867 U JP1985112867 U JP 1985112867U JP 11286785 U JP11286785 U JP 11286785U JP H0351668 Y2 JPH0351668 Y2 JP H0351668Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- heat storage
- medium
- sensible
- latent
- 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
Links
- 238000005338 heat storage Methods 0.000 claims description 91
- 230000008859 change Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000011232 storage material Substances 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- BDKLKNJTMLIAFE-UHFFFAOYSA-N 2-(3-fluorophenyl)-1,3-oxazole-4-carbaldehyde Chemical compound FC1=CC=CC(C=2OC=C(C=O)N=2)=C1 BDKLKNJTMLIAFE-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000012611 container material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 229940087562 sodium acetate trihydrate Drugs 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000032258 transport Effects 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
-
- 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
- Central Heating Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Description
【考案の詳細な説明】
(イ) 産業上の利用分野
本考案は、蓄熱装置に関し、特にソーラーシス
テム等の構成機器である蓄熱装置に関するもので
ある。[Detailed description of the invention] (a) Industrial application field The present invention relates to a heat storage device, and particularly to a heat storage device that is a component of a solar system or the like.
(ロ) 従来の技術
従来、一般に実用化され、普及している蓄熱槽
は、水を蓄熱媒体として使用していたため、蓄熱
媒体の蓄熱槽構成容器材料への腐食等の影響を考
慮する必要はあまりなかつた。しかし蓄熱媒体と
して、潜熱利用の蓄熱媒体を用いた場合には、実
用レベルの潜熱蓄熱材つまり、硫酸塩、硝酸塩、
リン酸塩、炭酸塩、酢酸塩などの水和物が多くの
場合金属との共存性がよくないため容器との直接
接触による腐食を防ぐ必要がある。又、蓄熱材が
水と混合した場合には、相変化が起きず潜熱蓄熱
材として働かなくなる。(b) Conventional technology In the past, heat storage tanks that have been put into practical use and are widely used have used water as a heat storage medium, so there is no need to consider the effects of the heat storage medium on the container materials that make up the heat storage tank, such as corrosion. There wasn't much. However, when a heat storage medium that utilizes latent heat is used as a heat storage medium, practical-level latent heat storage materials such as sulfates, nitrates,
Hydrates such as phosphates, carbonates, and acetates often have poor coexistence with metals, so it is necessary to prevent corrosion due to direct contact with containers. Furthermore, when the heat storage material is mixed with water, no phase change occurs and it no longer functions as a latent heat storage material.
(ハ) 考案が解決しようとする問題点
本考案は、上記の点に鑑みなされたもので、特
に蓄熱槽タンクの保護、利用上の安全性を計るた
め、潜熱蓄熱材の容器からの流出を検出できる手
段を持たせた蓄熱装置を提供しようとするもので
ある。(c) Problems that the invention aims to solve This invention was created in view of the above points, and is designed to prevent the latent heat storage material from flowing out of the container, especially in order to protect the heat storage tank and ensure its safety in use. The purpose is to provide a heat storage device equipped with a means for detection.
(ニ) 問題点を解決するための手段及び作用
本考案は密封された蓄熱タンクに、集熱熱媒と
熱交換を行なう顕熱蓄熱熱媒が内装されると共に
該顕熱蓄熱熱媒の相変化に伴つて発生する熱媒蒸
気を蓄えるための蒸気空間が形成され、該顕熱蓄
熱熱媒により蓄えられた熱を潜熱として蓄える潜
熱蓄熱熱媒の封入容器が前記顕熱蓄熱熱媒内に配
され、更に蓄熱タンクに、その顕熱蓄熱熱媒中の
導電率センサと、このセンサからの検出導電率が
予め設定された設定導電率を越えた場合に、前記
封入容器から潜熱蓄熱熱媒が漏れたことを出力す
るコントロール部とを設けたことを特徴とする蓄
熱装置である。(d) Means and action for solving the problems The present invention is characterized in that a sealed heat storage tank is equipped with a sensible heat storage medium that exchanges heat with a heat collecting heat medium. A vapor space is formed to store the heat medium vapor generated due to the change, and a container containing a latent heat storage heat medium that stores the heat stored by the sensible heat storage heat medium as latent heat is placed in the sensible heat storage heat medium. The heat storage tank is further provided with a conductivity sensor for the sensible heat storage heat medium, and when the detected conductivity from this sensor exceeds a preset set conductivity, the latent heat storage heat medium is removed from the sealed container. This heat storage device is characterized in that it is provided with a control unit that outputs an output indicating that water has leaked.
すなわち、本考案は、蓄熱タンク中の顕熱蓄熱
熱媒の導電率の変化を検知することによつて、顕
熱蓄熱熱媒中に潜熱蓄熱熱媒が混入、つまり潜熱
蓄熱熱媒の漏れを検出し、それによつて、蓄熱タ
ンクの性能低下及び腐食を未然に防止するもので
ある。 That is, the present invention detects the mixing of the latent heat storage heat medium into the sensible heat storage heat medium, that is, the leakage of the latent heat storage heat medium, by detecting the change in the electrical conductivity of the sensible heat storage heat medium in the heat storage tank. This is to prevent performance deterioration and corrosion of the heat storage tank.
(ホ) 実施例
以下、本考案の実施例の詳細を図面に従つて説
明する。これによつて本考案が限定されるもので
はない。(E) Embodiments Hereinafter, details of embodiments of the present invention will be explained with reference to the drawings. The present invention is not limited thereby.
まず図において、ソーラシステムに組み込まれ
た蓄熱装置Ａは、主として、蓄熱タンク１と、こ
の蓄熱タンクの顕熱蓄熱熱媒３と熱交換する集熱
熱媒２の循環路１９と、同じく蒸気空間５と熱交
換する負荷の蒸気通路２４と、コントロールユニ
ツト２１とからなる。 First, in the figure, the heat storage device A incorporated in the solar system mainly consists of a heat storage tank 1, a circulation path 19 for a heat collecting heat medium 2 that exchanges heat with a sensible heat storage heat medium 3 of this heat storage tank, and a steam space. It consists of a load steam passage 24 that exchanges heat with the load steam passage 5, and a control unit 21.
密封された蓄熱タンク１に、集熱熱媒２と熱交
換を行なう顕熱蓄熱熱媒３が内装されると共に該
顕熱蓄熱熱媒の相変化に伴なつて発生する熱媒蒸
気３Ａを蓄えるための蒸気空間５が形成され、該
顕熱蓄熱熱媒３により蓄えられた熱を潜熱として
蓄える潜熱蓄熱熱媒４が封入容器７に封入され、
該封入容器は前記顕熱蓄熱熱媒３内に配されてい
る。 A sealed heat storage tank 1 is equipped with a sensible heat storage heat medium 3 that exchanges heat with a heat collecting heat medium 2, and stores heat medium vapor 3A generated as a result of a phase change of the sensible heat storage heat medium. A vapor space 5 is formed for this purpose, and a latent heat storage heat medium 4 that stores the heat stored by the sensible heat storage heat medium 3 as latent heat is sealed in an enclosure 7.
The enclosure is arranged within the sensible heat storage heat medium 3.
そして、前記蓄熱タンク１の下部には、顕熱蓄
熱熱媒３に熱を与えるための循環路１９の蓄熱用
熱交換器６が内装され、該熱交換器を太陽熱によ
り加熱された集熱熱媒２が流れる。また、前記顕
熱蓄熱熱媒３は水のように顕熱量が大で比熱が大
きいものが使用される。また潜熱蓄熱熱媒４は、
例えば酢酸ナトリウム３水和物からなり、ポリエ
チレン（又はポリプロピレン）製の前記封入容器
７に充填されている。そして蓄熱タンク１の上部
に前記蒸気空間５が形成され、蓄熱タンク１の上
端に熱媒蒸気出口８が形成され、該出口８に中空
状のヒートパイプ９が、フレア接合され気密封止
された結合器１０を介して接続されている。ヒー
トパイプ９の先端凝縮部９ａに給水管１１が外嵌
され、該給水管１１及び凝縮部９ａで給湯用熱交
換器１２が構成される。なお、図中１３は給水
口、１４は出湯口である。また蓄熱タンク側面で
蓄熱熱媒３に浸漬する位置には導電率センサとし
ての電極２０が装着しており、この電極には電流
供給手段でもあるコントロール部２１が電気的に
接続している。また前記蓄熱タンク１にはその外
周壁に断熱材１５が巻付けられており、蓄熱タン
ク１、断熱材１５、潜熱蓄熱熱媒４、顕熱蓄熱熱
媒３、蓄熱用熱交換器６、ヒートパイプ９、電極
２０、コントロール部２１により蓄熱ユニツト１
６が構成されている。なお、１７は集熱器、２２
は循環ポンプである。また１８はコントロールユ
ニツト２３の警報器である。上記構成において、
集熱器１７に配管されている熱交換器３によつ
て、まず顕熱蓄熱熱媒３に熱が伝達される。顕熱
蓄熱熱媒３に蓄えられた熱は、潜熱蓄熱熱媒４の
相変化温度までは潜熱蓄熱熱媒４の顕熱として、
またその相変化温度で潜熱として蓄熱される。蒸
気空間５は、予め顕熱蓄熱熱媒３を蓄熱タンク１
に搬入するまえに系全体を真空に引き、一定量の
顕熱蓄熱熱媒３を封入して得られる顕熱蓄熱熱媒
３の飽和蒸気空間であり、その熱媒蒸気３Ａの圧
力は通常蓄熱タンク１の内部圧力に従う。熱の伝
達は、その飽和の熱媒蒸気３Ａによつていわばヒ
ートパイプ９からその凝縮部９ａに移送され、飽
和蒸気３Ａが凝縮して潜熱を給水管の水に与え、
熱輸送を行なう。一方、凝縮して液体となつた熱
媒蒸気３Ａは蓄熱タンク１へ液流となつて帰る。
また蒸気空間５では凝縮部９ａでの圧力によつて
蒸気３ａを結合管１０の方へ送り出し、その不足
分を顕熱蓄熱熱媒３の顕熱−潜熱相変化によつて
充足する。ここで取られた熱は、潜熱蓄熱熱媒４
に蓄熱されている熱量から補填される。上記のよ
うに蓄熱を行なう蓄熱装置であるが、潜熱蓄熱熱
媒４を充填してい封入容器７がなんらかの原因に
より破れ、潜熱蓄熱熱媒４が顕熱蓄熱熱媒３中に
溶出した場合には、潜熱蓄熱剤としての効果はな
くなつて、単位容積当たりの蓄熱量が大きいとい
う潜熱蓄熱材の特徴が失われてしまうことにな
る。 In the lower part of the heat storage tank 1, a heat storage heat exchanger 6 of a circulation path 19 for giving heat to the sensible heat storage heat medium 3 is installed. Medium 2 flows. Further, as the sensible heat storage heat medium 3, a material having a large amount of sensible heat and a large specific heat, such as water, is used. In addition, the latent heat storage heat medium 4 is
For example, it is made of sodium acetate trihydrate and is filled in the enclosing container 7 made of polyethylene (or polypropylene). The vapor space 5 is formed in the upper part of the heat storage tank 1, a heat medium vapor outlet 8 is formed in the upper end of the heat storage tank 1, and a hollow heat pipe 9 is flare-bonded to the outlet 8 and hermetically sealed. They are connected via a coupler 10. A water supply pipe 11 is fitted onto the tip condensing section 9a of the heat pipe 9, and the water supply pipe 11 and the condensing section 9a constitute a hot water supply heat exchanger 12. In addition, in the figure, 13 is a water supply port, and 14 is a tap water outlet. Further, an electrode 20 as a conductivity sensor is attached to the side surface of the heat storage tank at a position where it is immersed in the heat storage heat medium 3, and a control section 21, which also serves as a current supply means, is electrically connected to this electrode. In addition, a heat insulating material 15 is wrapped around the outer peripheral wall of the heat storage tank 1. The heat storage unit 1 is controlled by the pipe 9, the electrode 20, and the control section 21.
6 are configured. In addition, 17 is a heat collector, 22
is a circulation pump. Further, 18 is an alarm for the control unit 23. In the above configuration,
Heat is first transferred to the sensible heat storage medium 3 by the heat exchanger 3 piped to the heat collector 17 . The heat stored in the sensible heat storage heat medium 3 is converted into sensible heat of the latent heat storage heat medium 4 until the phase change temperature of the latent heat storage heat medium 4.
Also, heat is stored as latent heat at the phase change temperature. The steam space 5 is provided with a sensible heat storage heat medium 3 in advance in the heat storage tank 1.
This is the saturated vapor space of the sensible heat storage heat medium 3, which is obtained by evacuating the entire system and enclosing a certain amount of the sensible heat storage heat medium 3 before transporting the system, and the pressure of the heat medium vapor 3A is normally equal to that of the heat storage. According to the internal pressure of tank 1. Heat is transferred from the heat pipe 9 to the condensing section 9a by the saturated heat medium vapor 3A, and the saturated vapor 3A condenses and imparts latent heat to the water in the water supply pipe.
Transports heat. On the other hand, the heat medium vapor 3A that has condensed into a liquid returns to the heat storage tank 1 as a liquid stream.
Further, in the steam space 5, the pressure in the condensing part 9a sends the steam 3a toward the coupling pipe 10, and the shortage is filled by the sensible heat-latent heat phase change of the sensible heat storage heat medium 3. The heat taken here is the latent heat storage heat medium 4
This is compensated for by the amount of heat stored in the Although this is a heat storage device that stores heat as described above, if the enclosure 7 filled with the latent heat storage heat medium 4 is torn for some reason and the latent heat storage heat medium 4 is eluted into the sensible heat storage heat medium 3, , the effect as a latent heat storage agent is lost, and the characteristic of the latent heat storage material that it can store a large amount of heat per unit volume is lost.
このようになんらかの原因により潜熱蓄熱熱媒
４が封入容器７より溶出した場合には、顕熱蓄熱
熱媒３の導電率は、通常1000μs／cm以下であるの
が、電解質である潜熱蓄熱熱媒４が溶解すること
により、1000μs／cm以上になる。この現象は電極
２０に電圧を印加することにより、コントロール
部２１の内部の電圧変動（低下）として検知でき
る。結局検知した導電率値が予めコントロール部
２１に漏れの許容値として記憶していた値（設定
値：1000μs／cm）より高くなれば、コントロール
部２１が潜熱蓄熱熱媒４が溶出したとして外部の
表示ランプ、ブザー等の警報器１８へその作動信
号を出力し、警報する。 If the latent heat storage heat medium 4 is eluted from the enclosure 7 for some reason, the electrical conductivity of the sensible heat storage heat medium 3 is usually 1000 μs/cm or less, but the latent heat storage heat medium 4 is an electrolyte. 4 dissolves, it becomes 1000 μs/cm or more. This phenomenon can be detected as a voltage fluctuation (decrease) inside the control section 21 by applying a voltage to the electrode 20. If the detected conductivity value eventually becomes higher than the value (set value: 1000 μs/cm) stored in the control unit 21 as an allowable value for leakage, the control unit 21 determines that the latent heat storage heat medium 4 has eluted and the external The activation signal is output to an alarm device 18 such as an indicator lamp or a buzzer to issue an alarm.
以上の説明から明らかな通り、密封された蓄熱
タンク内にセンサとしての電極を設け、外部より
内部液体の電導度を検出することにより、容易に
潜熱蓄熱熱媒の封入容器の破れが検出でき、蓄熱
タンクの腐食予防及び蓄熱材の有効度の消失のモ
ニターが可能である。なお、その電極を顕熱蓄熱
熱媒の設定水面付近に取付けることにより、液面
モニターとしての効果を併せて持たせることも可
能である。またセンサ（電極）は、直接導電率を
検出しなくても、実質的に導電率の検出につなが
るものであればよい。 As is clear from the above explanation, by providing an electrode as a sensor in the sealed heat storage tank and detecting the conductivity of the internal liquid from the outside, it is possible to easily detect a rupture in the enclosing container for the latent heat storage heat medium. It is possible to prevent corrosion of heat storage tanks and monitor loss of effectiveness of heat storage materials. In addition, by attaching the electrode near the set water level of the sensible heat storage heat medium, it is also possible to have an effect as a liquid level monitor. Further, the sensor (electrode) does not need to directly detect conductivity, but may be any sensor that can substantially lead to the detection of conductivity.
(ヘ) 考案の効果
本考案は、蓄熱装置の性能低下及び蓄熱タンク
の腐食を未然に防止できる。(f) Effects of the invention The present invention can prevent performance deterioration of the heat storage device and corrosion of the heat storage tank.
第１図は本考案の一実施例を示す構成説明図で
ある。
Ａ……蓄熱装置、１……蓄熱タンク、３……顕
熱蓄熱熱媒、４……潜熱蓄熱熱媒、５……蒸気空
間、７……封入容器、２０……電極、２１……コ
ントロール部。
FIG. 1 is a configuration explanatory diagram showing an embodiment of the present invention. A... Heat storage device, 1... Heat storage tank, 3... Sensible heat storage heat medium, 4... Latent heat storage heat medium, 5... Steam space, 7... Enclosed container, 20... Electrode, 21... Control Department.
Claims (1)
行なう顕熱蓄熱熱媒が内装されると共に該顕熱蓄
熱熱媒の相変化に伴つて発生する熱媒蒸気を蓄え
るための蒸気空間が形成され、該顕熱蓄熱熱媒に
より蓄えられた熱を潜熱として蓄える潜熱蓄熱熱
媒の封入容器が前記顕熱蓄熱熱媒内に配され、更
に蓄熱タンクに、その顕熱蓄熱熱媒中の導電率セ
ンサと、このセンサからの検出導電率が予め設定
された設定導電率を越えた場合に、前記封入容器
から潜熱蓄熱熱媒が漏れたことを出力するコント
ロール部とを設けたことを特徴とする蓄熱装置。 The sealed heat storage tank is equipped with a sensible heat storage medium that exchanges heat with the collected heat medium, and has a vapor space for storing heat medium vapor generated as a result of a phase change of the sensible heat storage medium. A sealed container for a latent heat storage heat medium is disposed within the sensible heat storage heat medium and stores the heat stored by the sensible heat storage heat medium as latent heat. It is characterized by being provided with a conductivity sensor and a control unit that outputs an indication that the latent heat storage heating medium has leaked from the enclosure when the detected conductivity from the sensor exceeds a preset set conductivity. A heat storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985112867U JPH0351668Y2 (en) | 1985-07-22 | 1985-07-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985112867U JPH0351668Y2 (en) | 1985-07-22 | 1985-07-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6224282U JPS6224282U (en) | 1987-02-14 |
| JPH0351668Y2 true JPH0351668Y2 (en) | 1991-11-06 |
Family
ID=30994143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985112867U Expired JPH0351668Y2 (en) | 1985-07-22 | 1985-07-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0351668Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032960A (en) * | 2011-10-07 | 2013-04-10 | 刘君才 | Photovoltaic electric water heater |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5040529B2 (en) * | 2007-08-29 | 2012-10-03 | 東京電力株式会社 | Heat pump type water heater |
| JP5257982B2 (en) * | 2008-07-15 | 2013-08-07 | 三機工業株式会社 | Thermal storage device and thermal storage unit |
| JP5252282B2 (en) * | 2008-09-22 | 2013-07-31 | 三機工業株式会社 | Heat storage device |
| JP6434889B2 (en) * | 2015-11-12 | 2018-12-05 | 東邦瓦斯株式会社 | Method for detecting leakage of heat storage material in heat storage tank and heat storage tank |
-
1985
- 1985-07-22 JP JP1985112867U patent/JPH0351668Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032960A (en) * | 2011-10-07 | 2013-04-10 | 刘君才 | Photovoltaic electric water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6224282U (en) | 1987-02-14 |
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