アイススラリー生成における添加剤の影響
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概要
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In this study, effects of additives on the size of ice particles in ice slurries are investigated experimentally. Ethanol solution was used as aqueous solution to make ice slurries, and PVA (poly-vinyl alcohol) was examined as an additive. The aqueous solution was kept in supercooled condition, and ice slurry was subsequently made by releasing the supercooled condition. The degree of supercooling and concentrations of additives were varied as parameters. The observations of the ice particles in the ice slurry were carried out just after generation of the ice slurry and after 24 hours of storage. Differences between results with and without additive was not observed just after generation, and dendritic ice appeared in both cases. However, finer ice particles were observed after 24 hours storage in a case of the solutions with additives. Moreover, the size of ice particles was measured from photographs to confirm the effects of PVA. As the result, it is found that the average diameter is independent of the degree of polymerization in the range of this study.
- 公益社団法人 日本冷凍空調学会の論文
公益社団法人 日本冷凍空調学会 | 論文
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