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

Number: pap. n. 860

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

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-1 of latent heat was used and encapsulated in silica hard-shell microcapsules with 17µm of the diameter. A cationic surfactant, oleylbishydroxyethylmethylammonium chloride with a counterion, 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 microcapsule 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: 9 p.

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Details

  • Original title: Flow characteristics of silica hard-shell microcapsule slurries treated with additives.
  • Record ID : 30026248
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0860

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