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Heat transfer from an immersed vertical tube to a gas fluidized bed

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  • Verma, R.S.
  • Saxena, S.C.

Abstract

Fluidization and heat transfer experiments have been conducted in gas fluidized beds of two different sizes, viz., 305 × 305 mm2 and 305 × 152.5 mm2 and with particles of silica sands (d̄p = 167, 488, 504, and 745 μm), glass beads (dp = 427 μm) and millet seeds (dp = 2064 μm) with immersed smooth vertical heated tubes of diameter 12.7, 28.6, and 50.8 mm. Important conclusions are drawn concerning the dependence of heat transfer coefficient on fluidization velocity, bed particle diameter, tube diameter and nature of bed fluidization. The heat transfer data are employed to assess the available literature correlations for heat transfer coefficient and for its maximum value.

Suggested Citation

  • Verma, R.S. & Saxena, S.C., 1983. "Heat transfer from an immersed vertical tube to a gas fluidized bed," Energy, Elsevier, vol. 8(12), pages 909-925.
    • Handle: RePEc:eee:energy:v:8:y:1983:i:12:p:909-925
    DOI: 10.1016/0360-5442(83)90091-9
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