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Flow and sedimentation characteristics of silica hard-shell microcapsule slurries treated with additives.

Author(s) : SUZUKI H., HIDEMA R., USA S., et al.

Type of article: Article, IJR article

Summary

The sedimentation and flow characteristics of micro-encapsulated phase change materials have been investigated. As a phase change material, trimethylolethane clathrate hydrate having 218 kJ/kg of latent heat was used and encapsulated in silica hard-shell microcapsules, which size distribution has two peak at 15 µm and 59 µm. A cationic surfactant, oleylbishydroxyethylmethylammonium chloride with a counter-ion, sodium salicylate was used as drag reducing additives and poly vinyl alcohol was used as a stabilizer. From the results, it was found that the combination additive prevents effectively the microcap- sule sedimentation. The drag reduction was also observed to occur in the high Reynolds number region. Thus, the present additive was concluded to be promising for the latent heat transportation by use of silica hard-shell microcapsules containing phase change materials.

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Pages: 18-23

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Details

  • Original title: Flow and sedimentation characteristics of silica hard-shell microcapsule slurries treated with additives.
  • Record ID : 30026811
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 106
  • Publication date: 2019/10
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2019.07.007

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