Cold heat storage characteristics of latent heat microcapsule-water mixture flowing in a pipe with constant temperature wall

Hideo Inaba, Myoung Jun Kim, Akihiko Horibe

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3 Citations (Scopus)

Abstract

The present experiment and numerical analyses have been performed for obtaining the cold heat storage characteristics of a water mixture of microcapsules packed with liquid-solid phase change material (PCM) flowing in a pipe cooled under the constant temperature wall condition. The energy equation was formulated by taking into consideration of the heat release due to the PCM solidification process and the heat transfer enhancement induced by the microconvection of microcapsules. The heat source function in the energy equation was derived from solutions for the solidification in a spherical latent heat material. The governing parameters were found to be latent heat material concentration, cooling wall temperature, microcapsule diameter and velocity of water mixture of the microcapsules. The experimental and numerical results revealed that mean heat transfer coefficient for the water mixture of the latent microcapsules was about 1.6∼2.5 times greater than that for the single phase of water.

Original languageEnglish
Pages (from-to)2606-2613
Number of pages8
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume68
Issue number673
Publication statusPublished - Sep 2002
Externally publishedYes

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Keywords

  • Cold heat storage
  • Convection heat transfer
  • Latent heat microcapsules
  • Liquid-solid phase change
  • Solidification

ASJC Scopus subject areas

  • Mechanical Engineering

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