JPH05320629A - Latent-heat storage medium - Google Patents
Latent-heat storage mediumInfo
- Publication number
- JPH05320629A JPH05320629A JP4123949A JP12394992A JPH05320629A JP H05320629 A JPH05320629 A JP H05320629A JP 4123949 A JP4123949 A JP 4123949A JP 12394992 A JP12394992 A JP 12394992A JP H05320629 A JPH05320629 A JP H05320629A
- Authority
- JP
- Japan
- Prior art keywords
- heat storage
- latent heat
- storage material
- paraffin
- melting point
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、物質の融解および／
または凝固に伴う潜熱を利用した蓄熱体に関するもので
ある。FIELD OF THE INVENTION This invention relates to the melting and / or
Alternatively, the present invention relates to a heat storage body that uses latent heat associated with solidification.
【０００２】[0002]
【従来の技術】一定温度で大量の熱を蓄えることのでき
る潜熱蓄熱材が、住宅や電気製品などにおけるエネルギ
ーの効率的利用のために用いられ始めている。潜熱蓄熱
材は、物質の融解および凝固の際の相転移熱を利用して
蓄熱および放熱を行うもので、蓄熱材の融点がすなわち
蓄熱温度となる。2. Description of the Related Art Latent heat storage materials capable of storing a large amount of heat at a constant temperature have begun to be used for efficient use of energy in houses and electric appliances. The latent heat storage material stores and dissipates heat by utilizing the phase transition heat at the time of melting and solidifying a substance, and the melting point of the heat storage material is the heat storage temperature.
【０００３】潜熱蓄熱材は、有機系のものと無機水和物
系のものがある。無機水和物系の潜熱蓄熱材は、過冷却
や相分離が生じるうえに、潮解や風解により蓄熱効果を
なくしてしまう欠点がある。有機系の潜熱蓄熱材、たと
えばパラフィン系や油脂系のものは過冷却が少なく安定
であるため、蓄熱材として用いやすい。従来、蓄熱材は
蓄熱温度の高いものを室内での蓄熱のために床暖房やコ
ンクリートなどに用いられてきたが、最近では低い温度
での蓄熱効果を利用して、冷房効率を上げるための手段
として用いたり、体温に近い温度域での衣料の蓄熱など
に用いたりすることが試みられている。The latent heat storage material is classified into an organic type and an inorganic hydrate type. Inorganic hydrate-based latent heat storage materials have the drawback that supercooling and phase separation occur, and that the heat storage effect is lost due to deliquescence and efflorescence. Organic latent heat storage materials, such as paraffin-based and oil-based materials, are stable because they have little supercooling and are therefore easy to use as heat storage materials. Conventionally, heat storage materials with high heat storage temperature have been used for floor heating and concrete for indoor heat storage, but recently, means for increasing cooling efficiency by utilizing the heat storage effect at low temperatures. It has been attempted to use as a heat storage material for clothing in a temperature range close to body temperature.
【０００４】[0004]
【発明が解決しようとする課題】蓄熱温度を下げるため
に融点の低い有機系蓄熱材を用いると、引火点や発火点
も低くなり蒸気も出やすくなるため、蓄熱材の製造時や
使用時の取扱いに注意を要するという欠点があった。こ
の発明は、上記欠点に鑑みてなされたもので、製造時や
使用時に引火や発火などの危険が少なく、蒸気の量も少
なくでき、取扱いが容易な有機系潜熱蓄熱材を用いた蓄
熱体を提供することを課題とする。When an organic heat storage material having a low melting point is used to lower the heat storage temperature, the flash point and the ignition point are lowered, and steam is likely to be emitted. Therefore, when the heat storage material is manufactured or used, It had the drawback of requiring careful handling. This invention has been made in view of the above-mentioned drawbacks, there is little danger of ignition or ignition during manufacturing or use, the amount of steam can be reduced, and a heat storage body using an organic latent heat storage material that is easy to handle. The challenge is to provide.
【０００５】[0005]
【課題を解決するための手段】この発明は、上記課題を
解決するために、有機系潜熱蓄熱材を用いてなる潜熱蓄
熱体において、所望の蓄熱温度よりも高い融点を持つ２
種の有機系潜熱蓄熱材を混合して用いることにより、前
記所望の蓄熱温度が得られていることを特徴とする潜熱
蓄熱体を提供する。In order to solve the above problems, the present invention provides a latent heat storage body using an organic latent heat storage material having a melting point higher than a desired heat storage temperature.
Provided is a latent heat storage body, characterized in that the desired heat storage temperature is obtained by mixing and using one kind of organic latent heat storage materials.
【０００６】混合する２種の有機系潜熱蓄熱材として
は、２成分系の相状態図において共晶を形成するものを
用いればよく、たとえば、ｎ−パラフィンであれば、分
子鎖長の差が１５％以上のｎ−パラフィン同士や、炭素
数２０およびそれ以下の鎖長の偶数ｎ−パラフィン同士
などがあげられる。脂肪酸であれば、パルミチン酸とス
テアリン酸などがその例としてあげられ、また、脂肪酸
エステルでも同様の効果を期待できるものがある。As the two kinds of organic latent heat storage materials to be mixed, those which form a eutectic in the phase diagram of a binary system may be used. For example, in the case of n-paraffin, the difference in molecular chain length Examples include 15% or more of n-paraffins and even n-paraffins having a carbon number of 20 or less and a chain length of 20 or less. Examples of fatty acids include palmitic acid and stearic acid, and fatty acid esters can be expected to have similar effects.
【０００７】混合して得られた有機系潜熱蓄熱材は、そ
のまま蓄熱体として用いてもよく、架橋ポリオレフィン
樹脂ペレットなどに含浸・膨潤させたり（特開昭６２−
１８７７８２号公報などに記載されているやり方が利用
できる。たとえば、同公報記載の方法において相変化材
料として前記混合して得られた有機系潜熱蓄熱材を用い
るのである。）、あるいは、これに類似する形で担体に
保持したりして蓄熱体として用いてもよく、特に限定さ
れるものではない。The organic latent heat storage material obtained by mixing may be used as it is as a heat storage material, or may be impregnated or swollen in a crosslinked polyolefin resin pellet or the like (Japanese Patent Laid-Open No. 62-62-62).
The method described in Japanese Patent No. 187782 or the like can be used. For example, the organic latent heat storage material obtained by mixing is used as the phase change material in the method described in the publication. ), Or it may be used as a heat storage material by holding it on a carrier in a similar form, and is not particularly limited.
【０００８】この発明の潜熱蓄熱体は、成形などにより
所望の形状を採ることが可能である。The latent heat storage body of the present invention can have a desired shape by molding or the like.
【０００９】[0009]
【作用】２成分系の有機系潜熱蓄熱材の相状態図におい
て共晶を形成する２種の有機系潜熱蓄熱材は、これらを
混合することにより、その混合蓄熱材がそれぞれの有す
る融点より現象的に低い融点をもつことになる。このた
め、その混合蓄熱材の蓄熱温度は、その低下した融点温
度となる。一方、混合蓄熱材の引火点や発火点は混合し
た元のそれぞれの有機系潜熱蓄熱材のそれらであるの
で、単体で低い融点を持つ有機系潜熱蓄熱材を単独で用
いた場合よりも高いものとなり、製造時や使用時の取扱
いが容易になり、また、蒸気の発生も軽減される。な
お、融点の低下は、共晶点を通る組成に混合した場合が
最も大きいことは言うまでもない。[Function] Two kinds of organic latent heat storage materials that form a eutectic in the phase diagram of the two-component organic latent heat storage material are mixed, and by mixing them, the phenomenon that the mixed heat storage material has a melting point Will have a relatively low melting point. Therefore, the heat storage temperature of the mixed heat storage material becomes the lowered melting point temperature. On the other hand, since the flash point and the ignition point of the mixed heat storage material are those of the respective original organic latent heat storage materials that were mixed, they are higher than the case where the organic latent heat storage material with a low melting point is used alone. This facilitates handling during manufacturing and use, and also reduces steam generation. Needless to say, the melting point is most lowered when it is mixed in a composition passing through the eutectic point.
【００１０】[0010]
【実施例】以下に、この発明の具体的な実施例および比
較例を示すが、この発明は下記実施例に限定されない。 （実施例１）本実施例は、有機系潜熱蓄熱材として炭素
数２０以下の鎖長の偶数ｎ−パラフィンを２種混合した
ものと、潜熱蓄熱材の形状を保持するための骨格を形成
する高密度ポリオレフィンをポリオレフィンの融点以上
の温度で混合し、冷却して潜熱蓄熱体を得るものであ
る。EXAMPLES Specific examples and comparative examples of the present invention will be shown below, but the present invention is not limited to the following examples. (Example 1) In this example, as an organic latent heat storage material, a mixture of two even-numbered n-paraffins having a chain length of 20 or less carbon atoms and a skeleton for retaining the shape of the latent heat storage material are formed. A high density polyolefin is mixed at a temperature equal to or higher than the melting point of the polyolefin and cooled to obtain a latent heat storage body.
【００１１】本実施例において、炭素数２０以下の鎖長
の偶数ｎ−パラフィンとして、炭素数１６と１８のｎ−
パラフィンを混合した２種混合有機系潜熱蓄熱材７５重
量部に対し、高密度ポリオレフィンとして直鎖状高密度
ポリエチレンを２５重量部溶融混合して潜熱蓄熱体を得
た。本実施例の２種混合有機系潜熱蓄熱材において炭素
数１６と１８のｎ−パラフィンの混合割合を変化させた
時の融点の変化を図１に示した。炭素数１６のｎ−パラ
フィン単体の融点が１７℃で、炭素数１８のｎ−パラフ
ィン単体の融点が２７℃であるのに対し、炭素数１６の
パラフィンと炭素数１８のパラフィンを２：８の割合
（重量比）で混合した２種混合有機系潜熱蓄熱材の融点
が１５℃と、それぞれのパラフィン単独での融点より低
い融点が得られることがわかる。従って、本実施例の潜
熱蓄熱体の蓄熱温度は、１５℃となり、融点が１７℃と
２７℃の有機系潜熱蓄熱材を用いて蓄熱温度１７℃以下
のものが得られることになる。In this embodiment, as an even-numbered n-paraffin having a chain length of 20 or less carbon atoms, n-paraffins having 16 and 18 carbon atoms are used.
25 parts by weight of linear high-density polyethylene as high-density polyolefin was melt-mixed with 75 parts by weight of a two-component mixed organic latent heat storage material in which paraffin was mixed to obtain a latent heat storage body. FIG. 1 shows the change in melting point when the mixing ratio of n-paraffins having 16 and 18 carbon atoms was changed in the two-type mixed organic latent heat storage material of this example. The melting point of the n-paraffin having 16 carbon atoms is 17 ° C. and the melting point of the n-paraffin having 18 carbon atoms is 27 ° C., whereas the paraffin having 16 carbon atoms and the paraffin having 18 carbon atoms have the ratio of 2: 8. It can be seen that the melting point of the two-type mixed organic latent heat storage material mixed at a ratio (weight ratio) is 15 ° C., which is lower than the melting point of each paraffin alone. Therefore, the heat storage temperature of the latent heat storage body of the present embodiment is 15 ° C., and the heat storage temperature of 17 ° C. or less can be obtained by using the organic latent heat storage material having the melting points of 17 ° C. and 27 ° C.
【００１２】（比較例１）実施例１の比較として単独の
有機系潜熱蓄熱材を用いて蓄熱温度１７℃以下の潜熱蓄
熱体を得るには、融点が１７℃以下のパラフィン、すな
わち、炭素数１５のｎ−パラフィンを用いることにな
る。実施例１において、２種混合有機系潜熱蓄熱材の代
わりに炭素数１５のｎ−パラフィンを用いたこと以外は
実施例１と同様にして潜熱蓄熱体を得た。(Comparative Example 1) As a comparison of Example 1, in order to obtain a latent heat storage material having a heat storage temperature of 17 ° C or less using a single organic latent heat storage material, paraffin having a melting point of 17 ° C or less, that is, the number of carbons 15 n-paraffins will be used. A latent heat storage body was obtained in the same manner as in Example 1 except that n-paraffin having 15 carbon atoms was used in place of the binary mixed organic latent heat storage material.
【００１３】表１に炭素数１５、１６、１８のｎ−パラ
フィンの融点、引火点をそれぞれ示した。Table 1 shows the melting points and flash points of n-paraffins having 15, 16, and 18 carbon atoms, respectively.
【００１４】[0014]
【表１】 ────────────────────────── パラフィンの炭素数 融点（℃） 引火点（℃） ────────────────────────── １５ １０ １３２ １６ １７ １３５ １８ ２７ １６５ ────────────────────────── 表１にみるように、炭素数１６のパラフィンは炭素数１
５のパラフィンより引火点が高いため、危険が小さいこ
とがわかる。[Table 1] ────────────────────────── Paraffin carbon number Melting point (℃) Flash point (℃) ──────── ─────────────────── 15 10 132 16 16 17 135 18 18 27 165 ─────────────────────── ──── As shown in Table 1, paraffins with 16 carbons have 1 carbon.
Since the flash point is higher than the paraffin of No. 5, it can be seen that the danger is small.
【００１５】（実施例２）実施例１において、２種のｎ
−パラフィンの代わりに２種の脂肪酸すなわちパルミチ
ン酸２５モル％とステアリン酸７５モル％の混合物を用
いたこと以外は実施例１と同様にして潜熱蓄熱体を得
た。脂肪酸では、融点６３℃のパルミチン酸２５モル％
と融点６９℃のステアリン酸７５モル％を混合した潜熱
蓄熱材の融点は５５℃となり、蓄熱温度５５℃の潜熱蓄
熱体となる。また、脂肪酸の２成分混合物の蒸気圧は、
それぞれの成分の組成比から求められる蒸気圧よりも低
く、発生する蒸気も少なくなる。(Embodiment 2) In Embodiment 1, two types of n are used.
A latent heat storage medium was obtained in the same manner as in Example 1, except that a mixture of two kinds of fatty acids, namely 25 mol% of palmitic acid and 75 mol% of stearic acid was used instead of paraffin. For fatty acids, palmitic acid with a melting point of 63 ° C 25 mol%
And 75 mol% of stearic acid having a melting point of 69 ° C., the melting point of the latent heat storage material is 55 ° C., and the latent heat storage body has a heat storage temperature of 55 ° C. The vapor pressure of the binary mixture of fatty acids is
It is lower than the vapor pressure obtained from the composition ratio of each component, and the amount of vapor generated is also small.
【００１６】[0016]
【発明の効果】この発明によれば、所望の蓄熱温度以上
の融点を持つ２種の有機系潜熱蓄熱材を混合して用いる
ことにより、所望の蓄熱温度が得られているので、製造
時や使用時に引火や発火などの危険が少ないうえに、蒸
気の発生量も軽減でき、取扱いが容易な有機系潜熱蓄熱
材が提供される。According to the present invention, a desired heat storage temperature is obtained by mixing two kinds of organic latent heat storage materials having a melting point equal to or higher than a desired heat storage temperature. Provided is an organic latent heat storage material which is easy to handle and has a low risk of ignition and ignition during use, as well as a reduced amount of steam generated.
【図１】炭素１６と１８のｎ−パラフィンの混合割合を
変化させた時の融点の変化を示したグラフである。FIG. 1 is a graph showing changes in melting points when the mixing ratio of n-paraffins of carbons 16 and 18 is changed.
なし None
フロントページの続き (72)発明者 清 三喜男 大阪府門真市大字門真1048番地松下電工株 式会社内 (72)発明者 鶴来 充啓 大阪府門真市大字門真1048番地松下電工株 式会社内 (72)発明者 菅原 亮 大阪府門真市大字門真1048番地松下電工株 式会社内Front Page Continuation (72) Inventor Yoshio Kiyozo 1048, Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd. Inventor Ryo Sugawara 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd.
Claims (1)
体において、所望の蓄熱温度よりも高い融点を持つ２種
の有機系潜熱蓄熱材を混合して用いることにより、前記
所望の蓄熱温度が得られていることを特徴とする潜熱蓄
熱体。1. A latent heat storage material comprising an organic latent heat storage material, wherein the desired heat storage temperature is obtained by mixing and using two kinds of organic latent heat storage materials having a melting point higher than a desired heat storage temperature. A latent heat storage body characterized by being obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4123949A JPH05320629A (en) | 1992-05-15 | 1992-05-15 | Latent-heat storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4123949A JPH05320629A (en) | 1992-05-15 | 1992-05-15 | Latent-heat storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05320629A true JPH05320629A (en) | 1993-12-03 |
Family
ID=14873337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4123949A Pending JPH05320629A (en) | 1992-05-15 | 1992-05-15 | Latent-heat storage medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05320629A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016063478A1 (en) * | 2014-10-22 | 2016-04-28 | 株式会社デンソー | Composite heat storage material |
-
1992
- 1992-05-15 JP JP4123949A patent/JPH05320629A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016063478A1 (en) * | 2014-10-22 | 2016-04-28 | 株式会社デンソー | Composite heat storage material |
| JP2016079351A (en) * | 2014-10-22 | 2016-05-16 | 株式会社デンソー | Composite heat-storing material |
| US10155895B2 (en) | 2014-10-22 | 2018-12-18 | Denso Corporation | Composite heat storage material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4057101A (en) | Heat sink | |
| CN109337653B (en) | Segmented heat storage composite phase change material and preparation method thereof | |
| US5755987A (en) | Dibasic ester based phase change material compositions | |
| US5755988A (en) | Dibasic acid based phase change material compositions | |
| EP1681333A8 (en) | Heat-storage material composition | |
| WO2013179653A1 (en) | Paraffin-based latent heat storing material composition and use thereof | |
| CN107556972B (en) | Normal-low temperature phase change energy storage medium and preparation method thereof | |
| CN105154021A (en) | Highly heat-conducting phase change heat storage material and preparation method therefor | |
| FR2678943B1 (en) | COMPOSITIONS USEFUL IN PARTICULAR AS PHASE CHANGE MATERIALS FOR THE STORAGE AND RESTITUTION OF ENERGY. | |
| GB2094333A (en) | Glauber's salt heat storage compositions | |
| JP2001164242A (en) | Mixed salt for storing thermal energy in the form of phase transition heat and use thereof | |
| JPH05320629A (en) | Latent-heat storage medium | |
| US4341649A (en) | Energy storage medium and method | |
| JP2826211B2 (en) | Oily substance carrier and method for producing the same | |
| JPS6317313B2 (en) | ||
| EP0659863B1 (en) | Latent heat storage material composition | |
| CN105154022A (en) | Metal substrate highly heat-conducting heat storage material and preparation method therefor | |
| EP0620261B1 (en) | Latent heat storage material composition | |
| JPH0292988A (en) | Heat-storing material composition | |
| JP2009120734A (en) | Heat storage material composition | |
| CN106916568A (en) | A kind of preparation of organic phase change energy storage material | |
| JPS6189284A (en) | Heat storage material composition | |
| JP3768833B2 (en) | Thermal storage material, manufacturing method thereof, thermal storage system, thermal storage method, thermal storage tank, and heat transport medium | |
| JPS58215481A (en) | Heat storage material | |
| JPS61197668A (en) | Thermal energy storage material |