Effect of Carbon Fibers on Thermal Response within Heat Storage Material.
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- Fukai Jun
- Department of Chemical Engineering, Kyushu University
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- Omori Hiromi
- Department of Chemical Engineering, Kyushu University
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- Oishi Akira
- Department of Chemical Engineering, Kyushu University
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- Miyatake Osamu
- Department of Chemical Engineering, Kyushu University
Bibliographic Information
- Other Title
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- 蓄熱材内部の温度応答に及ぼす炭素繊維の影響
- チクネツザイ ナイブ ノ オンド オウトウ ニ オヨボス タンソ センイ ノ
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Abstract
In an attempt to reduce thermal resistance of heat storage material, carbon fibers were mixed with it. Paraffin whose thermal conductivity km=0.2-0.3 W/ (m·K) and carbon fibers (kf = 25 and 220 W/ (m · K)) were used. Transient temperature responses within the composite material contained in cylindrical capsules were measured in the melting and freezing stages. The volume fraction of the carbon fibers (Xf) was varied up to 1.1%. The fibers increased the melting period because they inhibit natural convection within the liquified paraffin phase. However, the fibers had sufficient effort on the reduction of the freezing period even at Xf <1%. For instance, the freezing period of the composite where Xf = 0.5% and kf=220 W/ (m · K) was approximately half of that with free of fibers.<BR>The effective thermal conductivity of the composite was moreover discussed based on the effective thermal diffusivity measured from the temperature responses.
Journal
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- KAGAKU KOGAKU RONBUNSHU
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KAGAKU KOGAKU RONBUNSHU 23 (1), 82-87, 1997
The Society of Chemical Engineers, Japan
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Details 詳細情報について
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- CRID
- 1390282679485469952
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- NII Article ID
- 10002767044
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- NII Book ID
- AN00037234
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- COI
- 1:CAS:528:DyaK2sXmtlGnug%3D%3D
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- ISSN
- 13499203
- 0386216X
- http://id.crossref.org/issn/0386216X
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- NDL BIB ID
- 4119090
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed