JPH0131110B2 - - Google Patents

Info

Publication number
JPH0131110B2
JPH0131110B2 JP15696683A JP15696683A JPH0131110B2 JP H0131110 B2 JPH0131110 B2 JP H0131110B2 JP 15696683 A JP15696683 A JP 15696683A JP 15696683 A JP15696683 A JP 15696683A JP H0131110 B2 JPH0131110 B2 JP H0131110B2
Authority
JP
Japan
Prior art keywords
hot water
water
heater
heat storage
tank
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
Application number
JP15696683A
Other languages
Japanese (ja)
Other versions
JPS6048443A (en
Inventor
Yukio Kurita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP58156966A priority Critical patent/JPS6048443A/en
Publication of JPS6048443A publication Critical patent/JPS6048443A/en
Publication of JPH0131110B2 publication Critical patent/JPH0131110B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F28D20/023Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material being enclosed in granular particles or dispersed in a porous, fibrous or cellular structure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18Water-storage heaters
    • F24H1/20Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
    • F24H1/201Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H7/00Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • F24H7/04Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
    • F24H7/0408Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply
    • F24H7/0433Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply the transfer medium being water
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14Thermal energy storage

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Dispersion Chemistry (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Description

【発明の詳細な説明】 〔技術分野〕 この発明は、槽内に給水された水を電気ヒータ
で加熱し、加熱された温水を貯湯および給湯する
電気温水器に関する。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an electric water heater that heats water supplied into a tank with an electric heater, stores and supplies the heated hot water.

〔背景技術〕[Background technology]

近年のエネルギー危機が一つの動機となつて、
エネルギーの有効利用、放熱による熱損失の低
減、排熱の回収が真剣に考えられるに及び、熱を
コンパクトに貯えることのできる潜熱系蓄熱材を
有効的に利用することが検討されてきた。
The recent energy crisis has been one motivation,
As effective use of energy, reduction of heat loss through heat radiation, and recovery of waste heat are being seriously considered, effective use of latent heat storage materials that can store heat in a compact manner has been studied.

従来から使用されている蓄熱材としては、身近
にある水、砂、砕石等がある。しかし、これらの
蓄熱材よりもコンパクトな蓄熱材を用いた技術も
開発されてきた。例えば、高温ではあるが、蓄熱
型カーラーの蓄熱にパラフインが使用された例が
ある。その他にも、中を流体が流れる伝熱管を内
蔵した貯湯槽内に潜熱系蓄熱材入りの容器が収納
されたもの(特公昭54−13054号公報)、水を封入
した金属缶を断熱性容器中に充填し、この容器を
蓄熱槽内に収納させたもの(特公昭54−24355号
公報)等が実用化または提案されている。しかし
ながら、これら従来の技術においては、蓄熱材入
り容器の伝熱効率に問題があつたし、耐水性、耐
薬品性が低いために水の浸入や液もれが発生する
という問題もあつた。また、潜熱系蓄熱材の相変
化に伴う体積膨張に対して容器が対応することが
できずに破れてしまうことがあつた。
Conventionally used heat storage materials include water, sand, crushed stone, etc., which are commonly found around us. However, technologies using heat storage materials that are more compact than these heat storage materials have also been developed. For example, there is an example of paraffin being used to store heat in a heat storage curler, albeit at a high temperature. In addition, a container containing a latent heat storage material is housed in a hot water storage tank with a built-in heat transfer tube through which a fluid flows (Japanese Patent Publication No. 13054/1983), and a metal can filled with water is placed in an insulating container. A system in which the heat storage tank is filled with heat and this container is housed in a heat storage tank (Japanese Patent Publication No. 54-24355) has been put into practical use or has been proposed. However, in these conventional techniques, there was a problem in the heat transfer efficiency of the container containing the heat storage material, and there was also a problem in that water intrusion and liquid leakage occurred due to low water resistance and chemical resistance. In addition, the container could not cope with the volumetric expansion accompanying the phase change of the latent heat storage material, and it sometimes broke.

電気温水器は、浴室等への給湯に備えるため多
量の湯を作り出す必要があるが、従来は、大容量
の容器(例えば400)内で予め時間をかけて多
量の水を温めておかなければ必要な時に給湯する
ことができないという問題点があつた。そのた
め、容器の小型化を実現できなかつた。また、従
来の電気温水器は、電気代の安価な深夜の間(例
えば22時から6時まで)に高温(85℃)の湯を作
り、12時間以上後に放熱によつて半分程度熱を損
失した湯を浴室等に給湯するという極めて効率の
悪い使用のされ方であつた。
Electric water heaters need to produce a large amount of hot water in order to supply hot water to bathrooms, etc., but conventionally, it is necessary to heat a large amount of water in a large capacity container (for example 400) over time in advance. There was a problem that hot water could not be supplied when needed. Therefore, it was not possible to downsize the container. In addition, conventional electric water heaters produce hot water at a high temperature (85℃) late at night when electricity costs are low (for example, from 10 p.m. to 6 a.m.), and lose about half of the heat through heat radiation after 12 hours or more. This was an extremely inefficient way of using the hot water, which was then used to supply hot water to bathrooms and other areas.

〔発明の目的〕[Purpose of the invention]

そこで、この発明は、潜熱系蓄熱材を有効に利
用して、熱効率が良く、小型ながらも従来と変わ
らぬ給湯性能を有する電気温水器を提供すること
を目的とする。
SUMMARY OF THE INVENTION An object of the present invention is to provide an electric water heater that effectively utilizes a latent heat storage material, has good thermal efficiency, and has hot water supply performance comparable to conventional water heaters despite its small size.

〔発明の開示〕[Disclosure of the invention]

発明者は、以上の目的を達成するため鋭意検討
を重ね、この発明を完成した。
The inventor has completed this invention after extensive studies to achieve the above objectives.

この発明は、槽内に、給水された水を加熱する
ヒータを備える電気温水器において、前記槽内に
は、表面に多数の溝を有し、潜熱系蓄熱材が封入
された合成樹脂製のカプセルが多数内蔵されてい
ることを特徴とする電気温水器をその要旨とす
る。以下、これを、その実施例をあらわす図面に
基づいて詳しく説明する。
This invention relates to an electric water heater equipped with a heater for heating supplied water in a tank, and in the tank, a synthetic resin-made heater having a large number of grooves on the surface and encapsulating a latent heat storage material is provided. The gist is an electric water heater that is characterized by having a large number of built-in capsules. Hereinafter, this will be explained in detail based on drawings showing examples thereof.

第1図にみるように、貯湯槽1内の底部にはヒ
ータ3が設置されている。ヒータ3の上方には、
貯湯槽内部を上下に仕切るようにして保護網11
が張られており、網上には多数の蓄熱材入りのカ
プセル12…が載つている。保護網11はこれら
カプセル12…がヒータ3に接触しないようヒー
タ3を保護する働きをするのである。給水は給水
管7を通つて貯湯槽1内下部へ行われ、貯湯槽1
からの給湯は貯湯槽上端にある給湯口9よりなさ
れる。給湯は、貯湯槽1内底部への給水によつて
水位を上昇させ、温水2を給湯口9から給湯管1
0内へ溢れ込ませるようにして行われる。図中、
4は支持脚、5は断熱材、6は槽内の空気圧を調
節するための空気抜弁、7′は給水弁、8は水抜
管、8′は水抜弁である。
As shown in FIG. 1, a heater 3 is installed at the bottom of the hot water storage tank 1. Above the heater 3,
A protective net 11 is installed to partition the inside of the hot water tank into upper and lower parts.
A large number of capsules 12 containing heat storage material are placed on the net. The protective net 11 functions to protect the heater 3 so that these capsules 12 do not come into contact with the heater 3. Water is supplied to the lower part of the hot water tank 1 through the water supply pipe 7.
Hot water is supplied from a hot water supply port 9 at the top of the hot water storage tank. To supply hot water, the water level is raised by supplying water to the inner bottom of the hot water storage tank 1, and hot water 2 is supplied from the hot water supply port 9 to the hot water supply pipe 1.
This is done by overflowing into 0. In the figure,
4 is a support leg, 5 is a heat insulating material, 6 is an air vent valve for adjusting the air pressure in the tank, 7' is a water supply valve, 8 is a water drain pipe, and 8' is a water drain valve.

貯湯槽内に収納されている蓄熱材入りのカプセ
ルは、耐水性および薬品安定性のある合成樹脂
製、例えばポリエチレンのブロー成形品等であ
る。また、第2図にみるように、カプセル12は
立方体に近い形状をしており、容積あたりの表面
積を広くして熱交換効率を高めるため、表面に多
数の溝13…が設けられている。これらの溝13
…は、液相・固相間の相変化において体積変化の
大きい潜熱系蓄熱材の体積増減を吸収するために
も役立つている。また、これら溝13…は、カプ
セル12…が積み上げられている状態においても
水路を確保する役割を果たしている。カプセルの
成形方法は、特にブロー成形に限られるものでは
なく、他の方法であつても構わない。カプセルの
溝の形状についても特別の制限はない。
The capsule containing the heat storage material stored in the hot water storage tank is made of water-resistant and chemically stable synthetic resin, such as a blow-molded product of polyethylene. Further, as shown in FIG. 2, the capsule 12 has a shape close to a cube, and a large number of grooves 13 are provided on the surface in order to increase the surface area per volume and increase the heat exchange efficiency. These grooves 13
...is also useful for absorbing volume changes in latent heat storage materials, which undergo large volume changes during phase changes between liquid and solid phases. Moreover, these grooves 13 play the role of securing a waterway even when the capsules 12 are piled up. The capsule molding method is not particularly limited to blow molding, and other methods may be used. There are also no particular restrictions on the shape of the grooves in the capsule.

第3図および第4図にみるように、カプセル1
2内には潜熱系蓄熱材14が入つている。潜熱系
蓄熱材14としては、利用温度に近い融点を有す
るものが好ましく、融点82℃のBa(OH)2・8H2O
等融点80℃前後のものが良い。しかし、融点が80
℃前後でない材料があつても構わない。潜熱系蓄
熱材14を封入するに当つては、これを液相の状
態で封入口15から注入したのち封入口15を溶
着させるようにして行われる。
As shown in Figures 3 and 4, capsule 1
2 contains a latent heat storage material 14. The latent heat storage material 14 preferably has a melting point close to the usage temperature, such as Ba(OH) 2.8H 2 O with a melting point of 82°C .
One with an equal melting point of around 80°C is good. However, the melting point is 80
It does not matter if there are materials that are not around ℃. The latent heat type heat storage material 14 is sealed by injecting it in a liquid phase through the filling port 15 and then welding the filling port 15.

つぎに、この発明にかかる電気温水器の作用に
ついて説明する。第1図にみるように、貯湯槽1
内には水2が充満している。ヒータ3で水2を温
めてゆくと、やがてカプセル12…内の潜熱系蓄
熱材が、温められた水2の持つ熱を融点近くまで
蓄熱した後、固相から液相へと相変化する。この
時の水温は潜熱系蓄熱材の融点に近い温度であ
る。こうして温められた温水を給湯口9から給湯
するとともに、入り替りに貯湯槽内下部へ低温の
水を給水すると、給水された水はカプセル12…
の間を通過するうちに潜熱系蓄熱材の液相から固
相への相変化を導き出し、それに伴う放熱によつ
て速やかに融点近くの温度まで加熱される。この
ようにして、あとから給水された水もヒータ3で
温められた水2のあとに続いて給湯される。これ
により、貯湯槽1の容量を超える量の湯が給湯可
能になるのである。例えば、融点82℃のBa
(OH)2・8H2Oの潜熱を利用すれば、給水温が25
℃であり給湯温を85℃にする場合、貯湯槽の容積
を従来の400から128に小型化することがで
き、表面積を従来の1/2.1にすることができる。
Next, the operation of the electric water heater according to the present invention will be explained. As shown in Figure 1, hot water tank 1
The inside is filled with water 2. As the water 2 is heated by the heater 3, the latent heat storage material in the capsules 12 eventually stores the heat of the warmed water 2 to near its melting point, and then changes from a solid phase to a liquid phase. The water temperature at this time is close to the melting point of the latent heat storage material. The thus heated hot water is supplied from the hot water supply port 9, and low-temperature water is alternately supplied to the lower part of the hot water tank, and the supplied water is transferred to the capsule 12...
As it passes through the gap, the latent heat storage material undergoes a phase change from a liquid phase to a solid phase, and due to the associated heat radiation, it is rapidly heated to a temperature close to its melting point. In this way, the water supplied later is also supplied following the water 2 heated by the heater 3. This makes it possible to supply hot water in an amount exceeding the capacity of the hot water storage tank 1. For example, Ba with a melting point of 82℃
(OH) By using the latent heat of 2.8H 2 O, the supply water temperature can be reduced to 25
℃ and the hot water supply temperature is 85℃, the volume of the hot water storage tank can be reduced from the conventional 400 to 128, and the surface area can be reduced to 1/2.1 of the conventional.

この発明にかかる電気温水器において、実施例
では水位上昇によつて給湯管内に温水が入り込む
ようにして給湯されていたが、これに限られるも
のではなく、他の給湯方法を用いても構わない。
また、実施例では、ヒータの位置が貯湯槽下部で
あつたが、ヒータの位置に特別の制限はない。
In the electric water heater according to the present invention, hot water is supplied in such a way that hot water enters the hot water supply pipes as the water level rises in the embodiment, but the invention is not limited to this, and other hot water supply methods may be used. .
Further, in the embodiment, the heater was located at the bottom of the hot water storage tank, but there is no particular restriction on the location of the heater.

〔発明の効果〕〔Effect of the invention〕

以上のように、この発明にかかる電気温水器
は、槽内に、給水された水を加熱するヒータを備
える電気温水器において、前記槽内には、表面に
多数の溝を有し、潜熱系蓄熱材が封入された合成
樹脂製のカプセルが多数内蔵されていることを特
徴としており、給水された水を潜熱系蓄熱材の放
熱を利用して貯湯槽内で速やかに所望の温度の湯
にして給湯することができるため、貯湯槽が必要
量の湯を予め保温貯湯しておく容積を必要とせ
ず、貯湯槽、ひいては電気温水器全体の小型化を
実現することができ、しかも、それによつて貯湯
槽表面からの放熱による温水の熱損失を低減する
ことができるという効果がもたらされる。小型化
によつて、材料費の節減、製造設備の小規模化や
設置可能な場所の増加が実現され、貯湯槽内の水
の容量が少なくなるため、ヒータによる水温の上
がり始めが早く、所望の水温に達する時間も早く
なるという効果ももたらされる。一定温度の融点
を有する潜熱系蓄熱材を使うため、温水が相変化
温度以上になりにくく、かつ温水は潜熱系蓄熱材
から相変化近辺の温度の放熱を多量に受けるの
で、温水の温度制御がしやすいという効果もあ
る。また、カプセルが合成樹脂製で可撓性に優れ
ており、表面には多数の溝が形成されているの
で、蓄熱材の相変化に伴う体積膨張が吸収され、
合成樹脂の強度や耐薬品性とともに温水器の耐久
性が良くなる。表面に形成されている溝は、ま
た、熱効率を高める働きをし、水路を確保する上
でも役立つ。さらには、潜熱系蓄熱材と温水とが
液体同士間で熱交換が行われるため伝熱効率が良
い、多数個のカプセルを使用するので、万が一潜
熱系蓄熱材が漏出しても被害が少なくて済み、カ
プセルの取り換えも簡単である、という効果もも
たらされるのである。
As described above, the electric water heater according to the present invention includes a heater for heating supplied water in the tank, and the tank has a large number of grooves on the surface, and a latent heat system. It is characterized by a large number of built-in synthetic resin capsules filled with heat storage material, and uses the heat dissipation of the latent heat storage material to quickly bring the supplied water to the desired temperature in the hot water storage tank. This eliminates the need for a hot water storage tank to store the required amount of hot water in advance, making it possible to downsize the hot water storage tank and, by extension, the electric water heater as a whole. This brings about the effect that heat loss of hot water due to heat radiation from the surface of the hot water storage tank can be reduced. Downsizing reduces material costs, reduces the size of manufacturing equipment, and increases the space available for installation.As the water capacity in the hot water storage tank is reduced, the water temperature by the heater begins to rise quickly and reaches the desired level. This also has the effect of speeding up the time it takes for the water to reach the desired temperature. Because a latent heat storage material with a constant melting point is used, it is difficult for the hot water to rise above the phase change temperature, and since the hot water receives a large amount of heat dissipated from the latent heat storage material at a temperature close to the phase change, the temperature of the hot water cannot be controlled. It also has the effect of being easy to do. In addition, the capsule is made of synthetic resin and has excellent flexibility, and many grooves are formed on the surface, so the volumetric expansion caused by the phase change of the heat storage material is absorbed.
Along with the strength and chemical resistance of synthetic resin, the durability of the water heater is improved. The grooves formed on the surface also serve to increase thermal efficiency and help maintain water channels. Furthermore, since heat exchange occurs between the latent heat storage material and the hot water, the heat transfer efficiency is high, and since a large number of capsules are used, even if the latent heat storage material leaks, there will be less damage. Another advantage is that the capsule can be easily replaced.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明にかかる電気温水器の一実施
例をあらわす断面図、第2図は第1図の電気温水
器を構成する蓄熱材入りのカプセルをあらわす斜
視図、第3図および第4図はそれぞれ第2図のカ
プセルを別方向から見た一部断面側面図である。 1……貯湯槽、2……水、3……ヒータ、11
……保護網、12……カプセル、13……溝、1
4……潜熱系蓄熱材。
FIG. 1 is a sectional view showing an embodiment of the electric water heater according to the present invention, FIG. 2 is a perspective view showing a capsule containing a heat storage material constituting the electric water heater of FIG. 1, and FIGS. Each figure is a partially sectional side view of the capsule of FIG. 2 viewed from a different direction. 1...Hot water tank, 2...Water, 3...Heater, 11
...Protection net, 12...Capsule, 13...Groove, 1
4...Latent heat storage material.

Claims (1)

【特許請求の範囲】 1 槽内に、給水された水を加熱するヒータを備
える電気温水器において、前記槽内には、表面に
多数の溝を有し、潜熱系蓄熱材が封入された合成
樹脂製のカプセルが多数内蔵されていることを特
徴とする電気温水器。 2 ヒータが貯湯槽下部に設けられており、ヒー
タ上方には保護網が設置されていて、その保護網
上に多数のカプセルが積載されている特許請求の
範囲第1項記載の電気温水器。
[Scope of Claims] 1. An electric water heater equipped with a heater for heating supplied water in a tank, in which the tank has many grooves on the surface and a synthetic heat storage material is sealed. An electric water heater characterized by having many resin capsules built-in. 2. The electric water heater according to claim 1, wherein the heater is provided at the bottom of the hot water storage tank, a protective net is installed above the heater, and a large number of capsules are loaded on the protective net.
JP58156966A 1983-08-27 1983-08-27 Electric hot water boiler Granted JPS6048443A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58156966A JPS6048443A (en) 1983-08-27 1983-08-27 Electric hot water boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58156966A JPS6048443A (en) 1983-08-27 1983-08-27 Electric hot water boiler

Publications (2)

Publication Number Publication Date
JPS6048443A JPS6048443A (en) 1985-03-16
JPH0131110B2 true JPH0131110B2 (en) 1989-06-23

Family

ID=15639210

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58156966A Granted JPS6048443A (en) 1983-08-27 1983-08-27 Electric hot water boiler

Country Status (1)

Country Link
JP (1) JPS6048443A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006284070A (en) * 2005-03-31 2006-10-19 Daiwa House Ind Co Ltd Hot water storage device
DE102007038351B4 (en) * 2007-08-14 2015-10-22 BSH Hausgeräte GmbH Water heater
JP2013088050A (en) * 2011-10-19 2013-05-13 Mitsubishi Plastics Inc Latent heat storage tank and hot water supply system
JP2013088049A (en) * 2011-10-19 2013-05-13 Mitsubishi Plastics Inc Latent heat storage tank and hot water supply system
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

Also Published As

Publication number Publication date
JPS6048443A (en) 1985-03-16

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