Local heat transfer between a vertical cylinder and a fluidized bed

Berg, B. V.; Baskakov, A. P.; SerÉÉteriin, B.

doi:10.1007/bf00835961

Cited by 2 publications

(1 citation statement)

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“…Measurements of heat transfer between dense beds and immersed tubes have been carried out by many investigators and both experimental data and correlations are reported in the literature (Vreedenberg, 1958: Zabrodsky, 1966Lewis et al, 1962;Andeen and Glicksman. 1976;Berg and Baskakov, 1974;Gel'perin et al, 1969;Saxena et al, 1978: Chandran et al, 1980Bak et al, 1987;Krell et al. 1990).…”

Section: Previous Workmentioning

confidence: 99%

Fluidized bed freeboard measurements of heat transfer

Farag

Tsai²

1992

Can J Chem Eng

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Local surface‐to‐suspension heat transfer coefficients in the freeboard of a fluidized bed reactor were measured by a newly designed miniature probe. Four types of plate orientations were used to test directional effects of surface on heat transfer rate. Variations of heat transfer coefficients with radial position are more significant at lower freeboard. For plate parallel both to the axial and radial directions of the column, the heat transfer coefficient (h) is higher at the center than at wall. For plate with exposed surface parallel to the axial and perpendicular to the radial directions, the plate gives nearly the same value of h at the center and the wall. At low heights of freeboard, center‐facing surface exhibits higher heat transfer rate than wall‐facing one. The phenomena of higher solids concentration and center to wall movement of particles account for this observation. Variations of heat transfer coefficients with elevation in the freeboard are as much as an order of magnitude, decreasing to gas convection with increasing elevation. These variations are relatively insensitive to the types of plate orientation investigated.

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Section: Previous Workmentioning

confidence: 99%