Abstract
Heat transfer data were obtained using a small electrically-heated simulated plate immersed in a liquid—fluidised bed. For steel balls and for spherical and cylindrical particles of glass fluidised by dimethyl phthalate, two correlations valid over the voidage range 0.40–0.85 were obtained; one was based on the Reynolds number ( Re 0), involving the particle diameter and its terminal falling velocity, and the other on a modified Reynolds number ( Re m ) incorporating the interstitial velocity and the volume: surface ratio of the voids. ▪ and ▪ In the above eqns, St is the Stanton number, J h the Colburn heat transfer factor and e the voidage. K is a constant depending on the properties of the solid particles.
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