JP2007327663A - Heat storage tank device - Google Patents

Heat storage tank device Download PDF

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Publication number
JP2007327663A
JP2007327663A JP2006157444A JP2006157444A JP2007327663A JP 2007327663 A JP2007327663 A JP 2007327663A JP 2006157444 A JP2006157444 A JP 2006157444A JP 2006157444 A JP2006157444 A JP 2006157444A JP 2007327663 A JP2007327663 A JP 2007327663A
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Prior art keywords
heat
heat storage
storage tank
transfer tube
storage container
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JP2006157444A
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Japanese (ja)
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Yasuhide Mochimatsu
康秀 用松
Yukio Fukushima
幸男 福島
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Hitachi Building Systems Co Ltd
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Hitachi Building Systems Co Ltd
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Priority to JP2006157444A priority Critical patent/JP2007327663A/en
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    • 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

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat storage tank device capable of inhibiting the leakage of heat without providing a heat storage container with a special structure to endure a high vacuum. <P>SOLUTION: In this heat storage tank device in which the heat storage container 11 is provided with a heater 12 for heating and a heat transfer tube 13 for taking out steam, and a heat storage material 14 is charged around them, finned heat transfer tubes 15 are disposed around the heat storage container 11, and the circumference of the finned heat transfer tubes 15 is coated with a heat insulating material 16. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、深夜電力や余剰電力により蓄えた熱を利用して蒸気を発生する蓄熱槽装置に関するものである。   The present invention relates to a heat storage tank apparatus that generates steam using heat stored by midnight power or surplus power.

従来、この種の装置としては、内部に蓄熱材が充填された容器本体と、蓄熱材を加熱するヒータと、容器本体内に配置され、内部に熱媒体が流されるとともに、その熱媒体と蓄熱材との間で熱交換を行う伝熱管とを備えた蓄熱装置において、前記容器本体は、内部ケース及び外部ケースからなる二重構造に形成し、そして、両ケース間の密閉空間を１Ｔｏｒｒ以下の真空としたものが提案されている（特許文献１参照）。
特開２０００−２９２０８４公報 Conventionally, as this type of apparatus, a container body filled with a heat storage material, a heater for heating the heat storage material, and a container body are arranged, and a heat medium is flowed inside the heat medium and the heat storage medium. In the heat storage device including a heat transfer tube for exchanging heat with the material, the container body is formed in a double structure including an inner case and an outer case, and a sealed space between the two cases is 1 Torr or less. A vacuum has been proposed (see Patent Document 1).
JP 2000-292084 A

上記の従来の蓄熱装置においては、容器本体の周囲を高真空とすることにより断熱しているが、内外ケースで構成された容器本体を高真空に耐える構造にしなければならないとともに、伝熱管やヒータが容器本体を貫通しており、内外ケース間の空間を高真空状態に維持することは至難である。したがって、熱漏洩を生じる懸念があるとともに、製作費が高くなりやすい。   In the above-described conventional heat storage device, the container body is insulated by creating a high vacuum around the container body, but the container body composed of the inner and outer cases must be structured to withstand high vacuum, and heat transfer tubes and heaters However, it is very difficult to maintain the space between the inner and outer cases in a high vacuum state. Therefore, there is a concern of causing heat leakage, and the production cost tends to be high.

本発明は、このような従来技術における実状からなされたもので、その目的は、蓄熱容器を高真空に耐えるような特別な構造とすることなく、熱漏洩を抑えることができる蓄熱槽装置を提供することにある。   The present invention was made from the actual situation in the prior art as described above, and its purpose is to provide a heat storage tank device capable of suppressing heat leakage without making the heat storage container special structure that can withstand high vacuum. There is to do.

この目的を達成するために、蓄熱容器に加熱用のヒータ、蒸気取り出し用の伝熱管を配置し、これらの周りに蓄熱材を充填した蓄熱槽装置において、前記蓄熱容器の周囲にフィン付伝熱管を配置するとともに、フィン付伝熱管の周囲を覆う断熱材を設けたことを特徴としている。   In order to achieve this object, in a heat storage tank apparatus in which a heater for heating and a heat transfer tube for extracting steam are arranged in a heat storage container, and a heat storage material is filled around these, a heat transfer tube with fins around the heat storage container And a heat insulating material covering the periphery of the finned heat transfer tube.

このように構成した本発明は、蓄熱容器から放出された熱は、フィンを介してフィン付伝熱管内の熱媒体の加熱に利用されるので、蓄熱容器からの放熱は回収される。さらに、フィン付伝熱管が納められた空間の温度は、蓄熱容器内より相当に低い温度となるため、大気との温度差は小さくなる。したがって、フィン付伝熱管の周囲の断熱材を通して大気に漏洩する熱を大幅に抑制でき、蓄熱容器を高真空に耐えるような特別な構造とすることなく、熱漏洩を抑えることができる。   In the present invention configured as described above, the heat released from the heat storage container is used for heating the heat medium in the heat transfer tube with fins via the fins, so that the heat radiation from the heat storage container is recovered. Furthermore, since the temperature of the space in which the finned heat transfer tubes are housed is considerably lower than that in the heat storage container, the temperature difference from the atmosphere is small. Therefore, the heat leaked to the atmosphere through the heat insulating material around the finned heat transfer tube can be significantly suppressed, and the heat leakage can be suppressed without making the heat storage container have a special structure that can withstand high vacuum.

本発明は、蓄熱容器の周囲にフィン付伝熱管を配置するとともに、フィン付伝熱管の周囲を覆う断熱材を備えたことから、従来のように蓄熱容器を高真空に耐えるような特別な構造とすることなく、熱漏洩を抑えることができ、従来に比べて蓄熱効率を向上させることができるとともに、製作が簡単になり、製作費を低減させることができる。   The present invention includes a finned heat transfer tube around the heat storage container and a heat insulating material that covers the periphery of the finned heat transfer tube, so that the heat storage container can withstand high vacuum as in the past. Therefore, the heat leakage can be suppressed, the heat storage efficiency can be improved as compared with the conventional case, the production is simplified, and the production cost can be reduced.

以下、本発明に係る蓄熱槽装置を実施するための最良の形態を図に基づいて説明する。   Hereinafter, the best mode for carrying out the heat storage tank apparatus according to the present invention will be described with reference to the drawings.

［本発明の第１実施形態］
図１は、本発明に係る蓄熱槽装置の第１実施形態を示すフロー図である。 [First embodiment of the present invention]
FIG. 1 is a flowchart showing a first embodiment of a heat storage tank device according to the present invention.

本発明の第１実施形態は、図１に示す深夜電力や余剰電力を利用する蓄熱槽１と、蓄熱槽１内に給水用の配管５を介して熱媒体すなわち純水を供給するための熱媒体ポンプ２と、給湯用、暖房用の温水または蒸気を発生させる熱交換器３と、蓄熱槽１の出口から熱交換器３をつなぐ配管６と熱媒体ポンプ２を連絡する配管７中に配置された貯水タンク４と、熱交換器３と熱媒体ポンプ２の吸い込み側とをつなぐ配管５と、熱交換器３で加熱され給湯用の温水を取り出す給湯器８とを備えている。また、蓄熱槽１に備えられる蓄熱容器１１内に配置されたヒータ１２及び伝熱管１３と、蓄熱容器１１内に充填された蓄熱材１４と、蓄熱容器１１の周囲に配置されたフィン伝熱管１５と、内面に断熱材を貼った容器状の化粧板から成り、フィン伝熱管１５の周囲に配置された断熱材１６を備えている。   1st Embodiment of this invention is the heat storage tank 1 using the midnight electric power and surplus electric power shown in FIG. 1, and the heat for supplying a heat medium, ie, pure water, into the heat storage tank 1 via the piping 5 for water supply. Arranged in a medium pump 2, a heat exchanger 3 for generating hot water or steam for hot water supply or heating, a pipe 6 connecting the heat exchanger 3 from the outlet of the heat storage tank 1, and a pipe 7 connecting the heat medium pump 2 The water storage tank 4, the pipe 5 that connects the heat exchanger 3 and the suction side of the heat medium pump 2, and the water heater 8 that is heated by the heat exchanger 3 and extracts hot water for hot water supply are provided. In addition, the heater 12 and the heat transfer tube 13 disposed in the heat storage container 11 provided in the heat storage tank 1, the heat storage material 14 filled in the heat storage container 11, and the fin heat transfer tube 15 disposed around the heat storage container 11. And a heat insulating material 16 disposed around the fin heat transfer tube 15.

この第１実施形態においては、深夜または電力余剰時に、ヒータ１２に通電し、蓄熱材１４を蓄熱する。給湯運転の際に蓄熱槽１の熱を取り出す場合には、熱媒体ポンプ４を起動し、この熱媒体ポンプ４が貯水タンク４より純水を吸い込み、蓄熱槽１内のフィン付伝熱管１５、伝熱管１３へその吸い込んだ純水を供給する。フィン付伝熱管１５では、吸い込んだ純水を蓄熱容器１１から放出される熱で予熱し、伝熱管１３では、前述の予熱された純水を蓄熱材１４の熱でさらに加熱する。この過熱により吸い込んだ純水は蒸気となる。ここで生成された蒸気は、配管６を通り、給湯用の温水または蒸気を発生させる熱交換器３において、給湯用の熱媒体（水）と熱交換することで熱を奪われて凝縮液となり、配管５を通り、貯水タンク４へ戻る。   In the first embodiment, the heater 12 is energized to store the heat storage material 14 at midnight or when power is surplus. When the heat of the heat storage tank 1 is taken out during the hot water supply operation, the heat medium pump 4 is started, the heat medium pump 4 sucks pure water from the water storage tank 4, and the finned heat transfer tube 15 in the heat storage tank 1, The sucked pure water is supplied to the heat transfer tube 13. The finned heat transfer tube 15 preheats the sucked pure water with the heat released from the heat storage container 11, and the heat transfer tube 13 further heats the preheated pure water with the heat of the heat storage material 14. The pure water sucked by this overheating becomes steam. The generated steam passes through the pipe 6 and in the heat exchanger 3 that generates hot water for supplying hot water or steam, heat is exchanged with a heat medium (water) for supplying hot water to become a condensed liquid. Return to the water storage tank 4 through the pipe 5.

このように構成した第１実施形態によれば、蓄熱容器１１の周囲にフィン付伝熱管１５を配置するとともに、このフィン付伝熱管１５の周囲を覆う断熱材１６を設けたことにより、蓄熱容器１１から放出された熱は、フィンを介してフィン付伝熱管１５内の純水の加熱に利用されるので、蓄熱容器１１からの放熱は回収される。つまり、フィン付伝熱管１５が納められた空間の温度は、蓄熱容器１１内より相当に低い温度となり、大気との温度差は小さくなる。したがって、従来のように蓄熱容器を高真空に耐えるような特別な構造とすることなく熱漏洩を抑えることができ、従来に比べて蓄熱効率を向上させることができるとともに製作が簡単になり、製作費を低減させることができる。   According to 1st Embodiment comprised in this way, while arrange | positioning the heat exchanger tube 15 with a fin around the heat storage container 11, and providing the heat insulating material 16 which covers the circumference | surroundings of this heat pipe 15 with a fin, the heat storage container Since the heat released from 11 is used for heating pure water in the finned heat transfer tube 15 through the fins, the heat radiation from the heat storage container 11 is recovered. That is, the temperature of the space in which the finned heat transfer tubes 15 are housed is considerably lower than that in the heat storage container 11, and the temperature difference from the atmosphere is small. Therefore, it is possible to suppress heat leakage without using a special structure that can withstand high vacuum as in the conventional case, and it is possible to improve heat storage efficiency compared to the conventional case and to simplify production. Costs can be reduced.

なお、配管６と、熱媒体ポンプ２の吸い込み側とを、貯水タンク４が配置された配管７により連絡することで、貯水タンク４内の液面が凝縮液面となり、貯水タンク４の圧力Ｐ４が配管６の圧力Ｐ２と等しくなる。つまり、熱媒体ポンプ２の吸い込み圧力が蓄熱槽１から発生した蒸気の圧力Ｐ２と同等となる。したがって、熱媒体ポンプ２に必要な揚程ｈは、蓄熱槽１内のフィン付伝熱管１５の抵抗（圧力Ｐ１−圧力Ｐ２）のみで良いこととなり、小さくて済む。つまり、蒸気温度が高い場合でも、熱媒体ポンプ２を低揚程ポンプとすることができる。したがって、ポンプ形状を小さくでき、これによりシステムの小型化を実現できるとともに、製作原価を安くすることができる。   In addition, by connecting the piping 6 and the suction side of the heat medium pump 2 through the piping 7 in which the water storage tank 4 is arranged, the liquid level in the water storage tank 4 becomes the condensate surface, and the pressure P4 of the water storage tank 4 is reached. Becomes equal to the pressure P2 of the pipe 6. That is, the suction pressure of the heat medium pump 2 is equivalent to the pressure P2 of the steam generated from the heat storage tank 1. Therefore, the head h required for the heat medium pump 2 is only required to be the resistance (pressure P1−pressure P2) of the finned heat transfer tube 15 in the heat storage tank 1, and may be small. That is, even when the steam temperature is high, the heat medium pump 2 can be a low head pump. Therefore, the pump shape can be reduced, and thereby the system can be miniaturized and the production cost can be reduced.

［本発明の第２実施形態］
図２は、本発明の第２実施形態を示すフロー図である。 [Second Embodiment of the Invention]
FIG. 2 is a flowchart showing a second embodiment of the present invention.

この第２実施形態は、蓄熱槽１内で発生した蒸気を吸収式温水機９の熱源として利用したもので、第１実施形態における熱交換器３の代わりに、吸収式冷温水機９の高温再生器９１を導入したものである。前述の吸収式冷温水機９は、高温再生器９１、低温再生器９２、凝縮器９３、蒸発器９４、吸収器９５、溶液循環ポンプ（図示省略）、溶液スプレーポンプ（図示省略）、冷媒ポンプ（図示省略）、熱交換器（図示省略）などから構成される。   In the second embodiment, steam generated in the heat storage tank 1 is used as a heat source for the absorption water heater 9, and instead of the heat exchanger 3 in the first embodiment, the high temperature of the absorption cold water heater 9. A regenerator 91 is introduced. The absorption chiller / heater 9 described above includes a high temperature regenerator 91, a low temperature regenerator 92, a condenser 93, an evaporator 94, an absorber 95, a solution circulation pump (not shown), a solution spray pump (not shown), and a refrigerant pump. (Not shown), a heat exchanger (not shown), and the like.

その他の構成は、負荷側の給湯器８の代わりに、温度調整用のファンコイルを配置した以外は、図１に示した第１実施形態と同様である。 The other configuration is the same as that of the first embodiment shown in FIG. 1 except that a temperature adjustment fan coil is disposed instead of the load-side water heater 8.

このように構成した第２実施形態においても、蓄熱容器１１の周囲にフィン付伝熱管１５を配置し、このフィン付伝熱管１５の周囲を覆う断熱材１６を設けたことにより、第１実施形態と同様の作用効果が得られる。   Also in 2nd Embodiment comprised in this way, 1st Embodiment is provided by arrange | positioning the heat exchanger tube 15 with a fin around the thermal storage container 11, and providing the heat insulating material 16 which covers the circumference | surroundings of this heat exchanger tube 15 with a fin. The same effect can be obtained.

本発明に係る蓄熱槽装置の第１実施形態を示すフロー図である。It is a flowchart which shows 1st Embodiment of the thermal storage tank apparatus which concerns on this invention. 本発明の第２実施形態を示すフロー図である。It is a flowchart which shows 2nd Embodiment of this invention.

符号の説明Explanation of symbols

１ 蓄熱槽
２ 熱媒体ポンプ
３ 熱交換器
４ 貯水タンク
５、６、７ 配管
８ 給湯器
９ 吸収式冷温水機
１１ 蓄熱容器
１２ ヒータ
１３ 伝熱管
１４ 蓄熱材
１５ フィン付伝熱管
１６ 断熱材 DESCRIPTION OF SYMBOLS 1 Heat storage tank 2 Heat medium pump 3 Heat exchanger 4 Water storage tank 5, 6, 7 Piping
DESCRIPTION OF SYMBOLS 8 Water heater 9 Absorption-type water heater / heater 11 Heat storage container 12 Heater 13 Heat transfer tube 14 Heat storage material 15 Heat transfer tube with fin 16 Heat insulation material

Claims (1)

蓄熱容器に加熱用のヒータ、蒸気取り出し用の伝熱管を配置し、これらの周りに蓄熱材を充填した蓄熱槽装置において、前記蓄熱容器の周囲にフィン付伝熱管を配置するとともに、このフィン付伝熱管の周囲を覆う断熱材を設けたことを特徴とする蓄熱槽装置。   In a heat storage tank apparatus in which a heater for heating and a heat transfer tube for taking out steam are arranged in a heat storage container, and a heat storage material is filled around them, a heat transfer tube with fins is arranged around the heat storage container, and A heat storage tank apparatus comprising a heat insulating material covering the periphery of the heat transfer tube.
JP2006157444A 2006-06-06 2006-06-06 Heat storage tank device Pending JP2007327663A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006157444A JP2007327663A (en) 2006-06-06 2006-06-06 Heat storage tank device

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Application Number Priority Date Filing Date Title
JP2006157444A JP2007327663A (en) 2006-06-06 2006-06-06 Heat storage tank device

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Publication Number Publication Date
JP2007327663A true JP2007327663A (en) 2007-12-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010169300A (en) * 2009-01-21 2010-08-05 Denso Corp Heat storage device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010169300A (en) * 2009-01-21 2010-08-05 Denso Corp Heat storage device

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