Heat transfer to immersed and boundary surfaces in fluidized beds

N. Hilal, D. J. Gunn

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

An experimental study of heat transfer into gas-fluidized beds has been carried out with heat transfer into discriminated areas of the boundary walls, and into single and multiple elements immersed in the bed. The experiments have been carried out with glass ballotini ranging in size from 100 μm to 1 mm in diameter, on Diakon (Perspex) particles of 325 μm, and on nickel particles of 275 μm and 325 μm covering a range of Archimedes numbers from 100 to 105. Beds of different diameter with distributors of several different types have been examined. The entire experimental results have been compared with literature data on heat transfer to immersed elements. It is shown that the onset of slugging in the fluidized bed has a large effect on heat transfer. Once the effect of slugging has been introduced, it is shown that the results of this investigation and others in the literature within the range of Archimedes numbers from 100 to 109 may be correlated.

Original languageEnglish
Pages (from-to)967-973
Number of pages7
JournalChemical Engineering and Technology
Volume25
Issue number10
DOIs
Publication statusPublished - Oct 2002
Externally publishedYes

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Fluidized beds
heat transfer
Heat transfer
Polymethyl Methacrylate
Nickel
nickel
experimental study
Gases
glass
Glass
gas
experiment
Experiments
effect
particle

ASJC Scopus subject areas

  • Polymers and Plastics
  • Environmental Science(all)
  • Chemical Engineering (miscellaneous)

Cite this

Heat transfer to immersed and boundary surfaces in fluidized beds. / Hilal, N.; Gunn, D. J.

In: Chemical Engineering and Technology, Vol. 25, No. 10, 10.2002, p. 967-973.

Research output: Contribution to journalArticle

Hilal, N. ; Gunn, D. J. / Heat transfer to immersed and boundary surfaces in fluidized beds. In: Chemical Engineering and Technology. 2002 ; Vol. 25, No. 10. pp. 967-973.
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