Local heat transfer, solids concentration and erosion around membrane tubes in a cold model circulating fluidized bed

C. Lockhart, J. Zhu, C. M.H. Brereton, C. J. Lim, J. R. Grace

Research output: Journal PublicationArticlepeer-review

25 Citations (Scopus)

Abstract

Measurements of local solids concentration, heat transfer and erosion were obtained in a 152 mm diameter x 9.3 m tall circulating fluidized bed operated at room temperature with 200 μm sand particles at a superficial gas velocity of 7.0 m s-1 with different solids circulation rates. Local solids concentrations were found to be higher in the fin region than on the crests of membrane tubes. For the small heat transfer surfaces investigated, this led to higher local heat transfer coefficients in the fin region, a trend which is the reverse of that for long heat transfer surfaces. Erosion rates were higher on the tube crests than on the fins.

Original languageEnglish
Pages (from-to)2403-2410
Number of pages8
JournalInternational Journal of Heat and Mass Transfer
Volume38
Issue number13
DOIs
Publication statusPublished - Sep 1995
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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