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ID 11237
Eprint ID
11237
FullText URL
Title Alternative
Influence of Certain Factors on Supercooling Phenomenon of Still Water
Author
Inaba, Hideo
Takeya, Kengo
Abstract
Supercooling characteristics in quiescent bulk water enclosed in a circular tube were investigated on a basic level through numerous experiments. In the experiments, three kinds of water with different specific resistances were used as the test samples and their freezing temperatures were measured. The critical degree of supercooling depended on the property of the heat transfer surface and the cooling rate, and it became larger for a smoother surface and a higher cooling rate. It was found that the specific resistance of the water had little effect on the critical degree of supercooling . However, the insoluble particles included in the water greatly affected the ice nucleation in the supercooled water and the size effect of the insoluble particles was found to become important in the range of 0.1-1.0 μm in particle radius. For particle radii larger than this range, the critical degree of supercooling was independent of the size, while below this range it sharply increased with a decrease in the particle size.
Abstract Alternative
本研究は、流動過冷却水を利用したスラリー状の連続製氷技術の確立を最終目標とし、その基本的モデルとなる容器内に充墳した比較的容積の大きな水の静止状態における過冷却現象の解明を対象として取り上げ、その過冷却現象の基本的特徴を探るものである。第一に核生成の要因が、不均質核生成に強く依存する条件のもとでの水の限界過冷却度が、その容積、冷却速度、冷却面の材質および表面性状等に如何に影響されるかを明らかにした上で、試料水内に含まれる異質浮遊粒子および水の比抵抗値に影響を及ぼすようなイオン系溶解分子等の不純物質が、水の過冷却度に及ぼす影響を実験的に検討するものである。なお、得られた水の過冷却現象に関する情報は、流動過冷却水による連続製氷技術の基礎資料となりうるものであり、新しい氷蓄熱システムの構築に役立つものと思われる。
Keywords
Supercooling Phenomenon
Water
Freezing
Ice Nucleation
Cooling Rate
Note
本文データは学協会の許諾に基づきCiNiiから複製したものである
Published Date
1993-11-25
Publication Title
日本機械学會論文集 B編
Publication Title Alternative
Transactions of the Japan Society of Mechanical Engineers B
Volume
volume59
Issue
issue567
Publisher
社団法人日本機械学会
Publisher Alternative
The Japan Society of Mechanical Engineers
Start Page
255
End Page
262
ISSN
0387-5016
NCID
AN00187441
Content Type
Journal Article
Official Url
http://ci.nii.ac.jp/naid/110002392299/http://ci.nii.ac.jp/naid/110002392299/
language
日本語
Copyright Holders
社団法人日本機械学会
File Version
publisher
Refereed
True