Heat transfer coefficient distributions in an experimental kettle reboiler thin slice

B. M. Burnside, K. M. Miller, D. A. McNeil, T. Bruce

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Pressure drop and heat transfer coefficient measurements have been made in a 241 tube bundle kettle reboiler thin slice rig, boiling pentane at atmospheric pressure. The effects of liquid/vapour separation problems in the shell are described and discussed. A conventional 1-D recirculation model predicted the data taken at a uniform heat flux of 10 kW m-2. Another recirculation model was developed and compared to the data at 50 kW m-2 where the flow in the bundle was markedly two dimensional. This model matched the pressure drop data in the bundle apart from that in the outside columns which were judged to have been affected by adjacent rapidly rising 2-phase flow in the shell. The model was adjusted to eliminate this defect and making use of two flow boiling models reproduced the heat transfer data mainly within experimental error. The consequence of these findings for the application of data from thin sliced rigs to design of full scale kettle reboilers and horizontal recirculation shellside evaporators is discussed.

Original languageEnglish
Pages (from-to)445-452
Number of pages8
JournalChemical Engineering Research and Design
Volume79
Issue number4
DOIs
Publication statusPublished - May 2001

Keywords

  • Disengagement
  • Heat transfer coefficients
  • Kettle reboilers
  • Thin slice rigs

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