Heat transfer characteristics of latent microcapsule-water mixed slurry flowing in a pipe with constant wall heat flux (numerical analysis)

Hideo Inaba, Myoung Jun Kim, Akihiko Horibe

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The present numerical analysis has been performed for obtaining the heat transfer characteristics of microencapsulated solid-liquid phase change material and water mixed slurry flow in a circular tube heated with constant wall heat flux. The energy equation was formulated by taking into consideration of the heat sink due to melting process and the heat transfer enhancement induced by the motion of microcapsules. The heat source function in the energy equation was derived from solutions for melting in a spherical latent heat material. The governing parameters were found to be latent heat material concentration, pipe diameter, microcapsule diameter, heat flux, and the slurry velocity. The numerical results revealed that mean heat transfer coefficient for latent microcapsule slurry was about 1.3∼1.8 times greater than that for the single phase of water.

Original languageEnglish
Pages (from-to)161-168
Number of pages8
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume68
Issue number665
Publication statusPublished - Jan 2002
Externally publishedYes

Fingerprint

Latent heat
latent heat
numerical analysis
Heat flux
Numerical analysis
heat flux
Melting
heat transfer
Pipe
melting
process heat
Heat transfer
circular tubes
phase change materials
Phase change materials
heat sinks
Heat sinks
heat sources
heat transfer coefficients
Heat transfer coefficients

Keywords

  • Constant wall heat flux
  • Latent microcapsule-water slurry
  • Melting heat transfer
  • Numerical analysis
  • Solid-liquid phase change

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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abstract = "The present numerical analysis has been performed for obtaining the heat transfer characteristics of microencapsulated solid-liquid phase change material and water mixed slurry flow in a circular tube heated with constant wall heat flux. The energy equation was formulated by taking into consideration of the heat sink due to melting process and the heat transfer enhancement induced by the motion of microcapsules. The heat source function in the energy equation was derived from solutions for melting in a spherical latent heat material. The governing parameters were found to be latent heat material concentration, pipe diameter, microcapsule diameter, heat flux, and the slurry velocity. The numerical results revealed that mean heat transfer coefficient for latent microcapsule slurry was about 1.3∼1.8 times greater than that for the single phase of water.",
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AU - Inaba, Hideo

AU - Kim, Myoung Jun

AU - Horibe, Akihiko

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N2 - The present numerical analysis has been performed for obtaining the heat transfer characteristics of microencapsulated solid-liquid phase change material and water mixed slurry flow in a circular tube heated with constant wall heat flux. The energy equation was formulated by taking into consideration of the heat sink due to melting process and the heat transfer enhancement induced by the motion of microcapsules. The heat source function in the energy equation was derived from solutions for melting in a spherical latent heat material. The governing parameters were found to be latent heat material concentration, pipe diameter, microcapsule diameter, heat flux, and the slurry velocity. The numerical results revealed that mean heat transfer coefficient for latent microcapsule slurry was about 1.3∼1.8 times greater than that for the single phase of water.

AB - The present numerical analysis has been performed for obtaining the heat transfer characteristics of microencapsulated solid-liquid phase change material and water mixed slurry flow in a circular tube heated with constant wall heat flux. The energy equation was formulated by taking into consideration of the heat sink due to melting process and the heat transfer enhancement induced by the motion of microcapsules. The heat source function in the energy equation was derived from solutions for melting in a spherical latent heat material. The governing parameters were found to be latent heat material concentration, pipe diameter, microcapsule diameter, heat flux, and the slurry velocity. The numerical results revealed that mean heat transfer coefficient for latent microcapsule slurry was about 1.3∼1.8 times greater than that for the single phase of water.

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