Heat transfer of microencapsulated PCM slurry flow in a circular tube

Xichun Wang, Jianlei Niu, Yi Li, Yinping Zhang, Xin Wang, Binjiao Chen, Ruolang Zeng, Qingwen Song

Research output: Journal article publicationJournal articleAcademic researchpeer-review

81 Citations (Scopus)

Abstract

Heat transfer characteristics of microencapsulated phase change material (MPCM) slurry flow in a circular horizontal tube are presented in this paper. Phase change due to the melting is investigated for water-based slurries using microencapsulated 1-bromohexadecane (C16H33Br) with a mass concentrations varying from O to 27.6%. The local heat transfer coefficients varied significantly along the test section when PCM particles were melting. The average Nusselt numbers were calculated based on the local heat transfer data and found to be significantly higher than those for singlephase fluid flow. Two new heat transfer correlations, one used for the slurry under laminar condition (O < Re < 2000) and another used for the slurry under slightly turbulent condition (2200 < Re < 3500), were proposed for predicting the heat transfer behaviors of MPCM slurry in a circular tube.
Original languageEnglish
Pages (from-to)1110-1120
Number of pages11
JournalAICHE Journal
Volume54
Issue number4
DOIs
Publication statusPublished - 1 Apr 2008

Keywords

  • Average Nusselt number
  • Local nusselt number
  • MPCM slurry
  • Phase change
  • Test section

ASJC Scopus subject areas

  • Biotechnology
  • Environmental Engineering
  • Chemical Engineering(all)

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