JPH0682036B2 - Heat storage - Google Patents
Heat storageInfo
- Publication number
- JPH0682036B2 JPH0682036B2 JP63037082A JP3708288A JPH0682036B2 JP H0682036 B2 JPH0682036 B2 JP H0682036B2 JP 63037082 A JP63037082 A JP 63037082A JP 3708288 A JP3708288 A JP 3708288A JP H0682036 B2 JPH0682036 B2 JP H0682036B2
- Authority
- JP
- Japan
- Prior art keywords
- heat storage
- heat
- carbon fiber
- storage material
- storage body
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/023—Heat 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
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
- Nonwoven Fabrics (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、伝熱性能が高く、特に高温領域において強
度、腐食等に対処することができるような蓄熱体に関す
るものである。Description: TECHNICAL FIELD The present invention relates to a heat storage material having high heat transfer performance and capable of coping with strength, corrosion, etc., particularly in a high temperature region.
（従来の技術） 従来、蓄熱体としては、化学変化を利用して蓄熱を行う
もの、相変化を利用して蓄熱を行うものが知られている
が、その何れの蓄熱体１も第３図に示すように蓄熱器６
内に充填し、一方伝熱媒体５は容器の入口から送入し、
出口から排出する過程で、蓄熱体と接触させて熱の授受
を行い、蓄熱体内に蓄熱を行うようにしているのが一般
的である。(Prior Art) Conventionally, as a heat storage body, one that stores heat by utilizing a chemical change and one that stores heat by using a phase change are known, and any of the heat storage bodies 1 is shown in FIG. As shown in
While the heat transfer medium 5 is introduced through the inlet of the container,
In the process of discharging from the outlet, it is common to contact the heat storage body to transfer heat to store heat in the heat storage body.
（発明が解決しようとする課題） この場合蓄熱体内への蓄熱は、一般に伝熱媒体と蓄熱体
との間の伝熱に支配されているが、従来より使用されて
いる蓄熱材料は熱伝導率が1W/m・Ｋ程度と小さく、この
ため蓄熱効率が低い等の難点がある。(Problems to be solved by the invention) In this case, the heat storage in the heat storage body is generally governed by the heat transfer between the heat transfer medium and the heat storage body, but the heat storage material conventionally used has a thermal conductivity Is as small as about 1 W / mK, which causes a problem such as low heat storage efficiency.
また蓄熱体の熱伝導を効率的に行うために、フィンを設
けるなど伝熱の改善策が提案されているが、この場合は
設備に多大なコストを必要とする。Further, in order to efficiently perform heat conduction of the heat storage body, measures for improving heat transfer such as provision of fins have been proposed, but in this case, a large cost is required for equipment.
更に、例えば700℃以上の高温領域で蓄熱体を使用する
場合、引張強度やクリープ強度の低下のため、これを構
造的に補強しなければならないなどの問題があり、また
一般的な金属材料をこれらの高温領域で使用する場合に
は非酸化性の雰囲気で使用しても熱応力による強度の低
下、腐食等の問題を生ずるので、Ni系合金、Mo、Re、Z
r、Ｗ等の特殊な金属材料などを使用しなければなら
ず、使用材料が著しく制約されるなどの難点がある。Furthermore, for example, when a heat storage material is used in a high temperature range of 700 ° C. or higher, there is a problem in that it has to be structurally reinforced because of the decrease in tensile strength and creep strength. When used in these high temperature regions, even when used in a non-oxidizing atmosphere, problems such as strength deterioration due to thermal stress and corrosion occur, so Ni-based alloys, Mo, Re, Z
Since special metal materials such as r and W must be used, there is a problem that the materials used are significantly restricted.
また、金属材料は密度が大であるため、これを材質とし
た場合には蓄熱体の軽量化に難点があると同時に、蓄熱
密度の低下が顕著になる等の問題がある。In addition, since the metal material has a high density, when it is made of a material, there is a problem in reducing the weight of the heat storage body, and at the same time, there is a problem that the heat storage density is significantly reduced.
そこで、この発明は伝熱性能並びに蓄熱密度が高く、し
かも高温での強度の低下乃至腐食がないような蓄熱体を
開発することを目的として鋭意研究の結果、炭素繊維か
らなる構造体が蓄熱物質の担体として極めて有効である
ことを見出したものである。Therefore, as a result of earnest research for the purpose of developing a heat storage body having high heat transfer performance and heat storage density, and having no deterioration in strength or corrosion at high temperatures, the present invention has revealed that a structure made of carbon fiber is a heat storage material. It has been found that it is extremely effective as a carrier for.
（課題を解決するための手段） そこで、この発明においては炭素繊維からなる構造体の
空隙に、蓄熱物質を分散させた蓄熱体を提案するもので
ある。(Means for Solving the Problem) Therefore, the present invention proposes a heat storage material in which a heat storage material is dispersed in voids of a structure made of carbon fiber.
ここで、炭素繊維からなる構造体としては布、フェルト
等の構造体を挙げることができる。Here, examples of the structure made of carbon fibers include structures such as cloth and felt.
また蓄熱物質としては例えばNiCl・6NH3、NiCl・2NH3、C
aBr2・2H2O、CaCl2・2CH3NH2、CaCl2・6CH3NH2等の化学反応
を伴う熱の吸収・放出を行う蓄熱物質、例えばLiF、MgF
2、NaF、CaF2、Be、KF等を含んだ単成分及び多成分など
の相変化を伴う熱の吸収・放出を行う蓄熱物質を使用す
ることができる。As the heat storage material for example NiCl · 6NH 3, NiCl · 2NH 3, C
aBr 2 · 2H 2 O, heat storage material that performs absorption and release of heat accompanying a chemical reaction of CaCl 2 · 2CH 3 NH 2, such as CaCl 2 · 6CH 3 NH 2, for example LiF, MgF
It is possible to use a heat storage material that absorbs and releases heat with a phase change such as a single component and a multi-component containing 2 , NaF, CaF 2 , Be, KF and the like.
炭素繊維からなる構造体の空隙に、蓄熱物質を分散させ
る方法としては、有機繊維を焼結して炭化して炭素繊維
とする際に、蓄熱物質と混合して焼結することによって
行うことができ、また蓄熱物質を液体又は粉体状態で炭
素繊維中に含浸、注入させることによって行うことがで
き、更に炭素繊維を液体又は粉体状態にある蓄熱物質中
に挿入することによって行うこともできる。As a method of dispersing the heat storage substance in the voids of the structure made of carbon fiber, when the organic fiber is sintered and carbonized to form the carbon fiber, it can be performed by mixing with the heat storage substance and sintering. Alternatively, the heat storage substance can be impregnated and injected into the carbon fiber in a liquid or powder state, and further, the carbon fiber can be inserted into the heat storage substance in a liquid or powder state. .
このようにして空隙に蓄熱物質を分散させた炭素繊維の
構造体は加工性に富み、例えば平板の表面に設置するこ
とができることは勿論のこと、円管の内面或は外面に設
置することもできる。In this way, the carbon fiber structure in which the heat storage substance is dispersed in the void has high workability and can be installed on the surface of a flat plate as well as on the inner or outer surface of a circular pipe. it can.
更に、熱媒体と蓄熱物質の組み合わせによっては得られ
た構造体を直接熱媒体と接触させてもよい。Further, depending on the combination of the heat medium and the heat storage substance, the structure obtained may be brought into direct contact with the heat medium.
（作用） 以上要するに、この発明に係る蓄熱体は蓄熱物質を炭素
繊維からなる構造体の空隙に分散させて製造されるが、
ここで使用される炭素繊維は熱伝導率が数10W/m・Ｋと
金属と同程度であるため、この発明に係る蓄熱体は伝熱
性が高く、しかも炭素繊維は密度が金属の数分の１であ
るため、蓄熱密度が高く、したがってこの発明により得
られた蓄熱体を利用すれば排熱回収、熱容量の高い熱交
換器が得られる。(Operation) In summary, the heat storage material according to the present invention is manufactured by dispersing the heat storage material in the voids of the structure made of carbon fiber.
Since the carbon fiber used here has a thermal conductivity of several tens of W / m · K, which is about the same as that of metal, the heat storage material according to the present invention has high heat conductivity, and the carbon fiber has a density equal to that of metal. Since the heat storage density is 1, the heat storage density is high. Therefore, if the heat storage body obtained by the present invention is used, a heat exchanger with high exhaust heat recovery and heat capacity can be obtained.
また炭素繊維は化学的に安定で耐腐食性が高く、また熱
膨張率が低く、機械的強度が高いなどの特徴があるの
で、この発明では高温の蓄熱でも耐腐食性があり、しか
も強度の高い蓄熱体が得られる。Further, carbon fiber is chemically stable and has high corrosion resistance, and has a low coefficient of thermal expansion and a high mechanical strength. A high heat storage body can be obtained.
更に炭素繊維は密度が金属の数分の１程度であるため、
この発明では極めて軽量化された蓄熱体を得ることがで
き、蓄熱器の重量を軽減することができ、これは通常の
産業利用のみならず、特に宇宙環境のような極限条件下
で利用できるなど著しい特長を有する。Furthermore, since the density of carbon fiber is about a fraction of that of metal,
With this invention, it is possible to obtain an extremely lightweight heat storage body and reduce the weight of the heat storage device, which can be used not only for normal industrial use, but especially under extreme conditions such as space environment. Has remarkable features.
なお、この発明に係る蓄熱体を直接伝熱媒体と接触させ
る、所謂直接接触蓄熱器とすることにより更に蓄熱器の
重量を軽減することができる。The weight of the regenerator can be further reduced by forming the so-called direct contact regenerator in which the regenerator according to the present invention is brought into direct contact with the heat transfer medium.
（実施例） 以下、この発明を図示の実施例に基づいて説明する。(Embodiment) Hereinafter, the present invention will be described based on an illustrated embodiment.
第１図では、炭素繊維中に体積分率で20〜90％程度の蓄
熱物質を充填してなるフェルト状の蓄熱体１を、直径3c
m程度の外管２と直径1cm程度の内管３の間に挿入して円
環状蓄熱管４を構成した例であり、この場合蓄熱管４は
外管２の外側又は３の内側に沿って流れる伝熱媒体５の
間で熱交換を行ない、蓄熱体１内に蓄熱する。In FIG. 1, a felt-like heat storage body 1 made by filling a carbon fiber with a heat storage material having a volume fraction of about 20 to 90% has a diameter of 3c.
This is an example in which an annular heat storage tube 4 is configured by being inserted between an outer tube 2 having a diameter of about m and an inner tube 3 having a diameter of about 1 cm. In this case, the heat storage tube 4 extends along the outer side of the outer tube 2 or the inner side of the outer tube 3. Heat is exchanged between the flowing heat transfer media 5, and heat is stored in the heat storage body 1.
なお、第１図の実施例では伝熱媒体５と蓄熱体１との間
の熱の授受を外管２乃至内管３を介して行なう例につい
て述べたが、伝熱媒体５と蓄熱体１とを直接接触させて
も問題がない場合には、構造体１を直接伝熱媒体５と接
触させるような構造の蓄熱器を構成することができ、そ
れだけコストの低減と軽量化を図ることができる。In the embodiment shown in FIG. 1, an example in which heat is transferred between the heat transfer medium 5 and the heat storage body 1 via the outer tube 2 to the inner tube 3 has been described, but the heat transfer medium 5 and the heat storage body 1 are described. When there is no problem even if they are brought into direct contact with, it is possible to configure a heat accumulator having a structure in which the structure 1 is brought into direct contact with the heat transfer medium 5, and thus cost reduction and weight reduction can be achieved. it can.
第２図は、この例を示すもので、この実施例では蓄熱器
６内に炭素繊維中に体積分率で20〜90％程度の蓄熱物質
を充填してなる板状の蓄熱体1,…がスペーサ7,…を介し
て積層されている。この場合伝熱媒体５は入口6aから蓄
熱器６内に送入され、出口6bより排出されるが、蓄熱器
６内では蓄熱体1,…と直接接触して熱交換を行ない、蓄
熱体１内に蓄熱する。FIG. 2 shows this example, and in this embodiment, a plate-shaped heat storage body 1, in which carbon fiber is filled with a heat storage material in a volume fraction of about 20 to 90% in the heat storage device 1, ... Are stacked via the spacers 7 ,. In this case, the heat transfer medium 5 is sent from the inlet 6a into the heat storage device 6 and discharged from the outlet 6b, but in the heat storage device 6, the heat transfer medium 5 is in direct contact with the heat storage devices 1, ... Stores heat inside.
（発明の効果） 以上要するに、この発明によれば炭素繊維からなる構造
体の空隙に、蓄熱物質を分散させて蓄熱体を構成してあ
るため、伝熱性が良好で、しかも蓄熱密度の高い蓄熱体
が得られる。したがってこの発明に係る蓄熱体を利用す
ることにより排熱回収、熱容量の高い熱交換器とするこ
とができる。(Effects of the Invention) In summary, according to the present invention, since the heat storage substance is formed by dispersing the heat storage substance in the voids of the structure made of carbon fiber, the heat storage property is good and the heat storage density is high. The body is obtained. Therefore, by using the heat storage body according to the present invention, a heat exchanger with high exhaust heat recovery and heat capacity can be obtained.
更に、この発明に係る蓄熱体は高温においても強度の低
下、腐食等の問題を著しく低減し、特に高温領域で使用
することができ、更に宇宙空間のような極限環境で使用
する上で、利点が極めて高い。Further, the heat storage body according to the present invention remarkably reduces problems such as strength reduction and corrosion even at high temperatures, can be used particularly in a high temperature region, and is advantageous in use in an extreme environment such as outer space. Is extremely high.
また、高温においても強度の低下、腐食等の問題を著し
く軽減できるため、特に補強することなく、したがって
軽量で、しかも製造コストの安価な蓄熱体を提供するこ
とができる。Further, since problems such as strength reduction and corrosion can be remarkably reduced even at high temperatures, it is possible to provide a heat storage body which is light in weight and inexpensive in manufacturing cost without any particular reinforcement.
【図面の簡単な説明】 第１図は、この発明の一実施例を示す蓄熱管の斜視図、
第２図は、他の実施例を示す蓄熱器の一部欠載斜視図、
第３図は従来の蓄熱器の一例を示す概略図である。 図中、１は蓄熱体、４は蓄熱管、５は伝熱媒体、６は蓄
熱器。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a heat storage tube showing an embodiment of the present invention,
FIG. 2 is a partially omitted perspective view of a heat storage device showing another embodiment,
FIG. 3 is a schematic diagram showing an example of a conventional heat storage device. In the figure, 1 is a heat storage body, 4 is a heat storage tube, 5 is a heat transfer medium, and 6 is a heat storage device.
Claims (3)
造体の空隙に、蓄熱物質を分散させたことを特徴とする
蓄熱体。1. A heat storage material in which a heat storage material is dispersed in voids of a cloth-like or felt-like structure made of carbon fiber.
・放出を行う物質を用いた特許請求の範囲第１項記載の
蓄熱体。2. The heat storage material according to claim 1, wherein a material that absorbs and releases heat accompanied by a chemical change is used as the heat storage material.
放出を行う物質を用いた特許請求の範囲第１項記載の蓄
熱体。3. As a heat storage material, absorption of heat accompanied by phase change
The heat storage body according to claim 1, which uses a substance that releases heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63037082A JPH0682036B2 (en) | 1988-02-19 | 1988-02-19 | Heat storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63037082A JPH0682036B2 (en) | 1988-02-19 | 1988-02-19 | Heat storage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01212893A JPH01212893A (en) | 1989-08-25 |
| JPH0682036B2 true JPH0682036B2 (en) | 1994-10-19 |
Family
ID=12487628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63037082A Expired - Lifetime JPH0682036B2 (en) | 1988-02-19 | 1988-02-19 | Heat storage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0682036B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023189974A1 (en) * | 2022-03-30 | 2023-10-05 | 株式会社巴川製紙所 | Temperature equalizing unit |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2715719B1 (en) * | 1994-01-28 | 1996-03-01 | Thomson Csf | Calorific energy storage device. |
| JP5231077B2 (en) * | 2007-11-30 | 2013-07-10 | 株式会社豊田中央研究所 | Chemical heat storage material composite and its manufacturing method |
| JP5297669B2 (en) * | 2008-03-21 | 2013-09-25 | 株式会社豊田中央研究所 | Chemical heat storage material composite and its manufacturing method |
| JP5586262B2 (en) * | 2010-02-15 | 2014-09-10 | 学校法人 名古屋電気学園 | Chemical heat storage material molded body and method for producing the same |
| EP2644679B1 (en) * | 2011-02-10 | 2018-11-07 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Chemical heat accumulator and method for producing same |
| JP5698056B2 (en) * | 2011-03-31 | 2015-04-08 | 株式会社豊田中央研究所 | Chemical heat storage device |
| JP5768887B2 (en) * | 2011-08-23 | 2015-08-26 | 株式会社豊田中央研究所 | Chemical heat storage material, manufacturing method thereof, and chemical heat storage structure |
| JP5780185B2 (en) * | 2012-03-15 | 2015-09-16 | 株式会社デンソー | Waste heat recovery device |
| JP6026469B2 (en) * | 2014-08-01 | 2016-11-16 | 古河電気工業株式会社 | Flat heat accumulator, heat accumulator unit with flat heat accumulator and heat accumulator with heat accumulator unit |
| JP6860977B2 (en) * | 2016-03-30 | 2021-04-21 | 安積濾紙株式会社 | Composite material using phase change substance, its manufacturing method and its arrangement method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5411012A (en) * | 1977-06-27 | 1979-01-26 | Kobe Steel Ltd | Method and equipment for heat treating titanium pipe |
-
1988
- 1988-02-19 JP JP63037082A patent/JPH0682036B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023189974A1 (en) * | 2022-03-30 | 2023-10-05 | 株式会社巴川製紙所 | Temperature equalizing unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01212893A (en) | 1989-08-25 |
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