Wall-to-Suspension Heat Transfer in Circulating Fluidized Beds
Wirth KE (1995)
Publication Language: English
Publication Type: Conference contribution
Publication year: 1995
Publisher: American society of mechanical engineers
Edited Volumes: Proceedings of the International Conference on Fluidized Bed Combustion
City/Town: New York
Pages Range: 473-486
Conference Proceedings Title: Preprints 13th International Conference on Fluidized Bed Combustion
Event location: Kissimmee, Florida
ISBN: 0791813053
Abstract
The wall-to-suspension heat transfer in circulating fluidized beds depends on the fluid mechanics immediately near the wall and on the thermal properties of the gas used. Experimental investigations of circulating fluidized beds of low dimensionless pressure gradients with different solid particles such as bronze, glass, and polystyrene at ambient temperatures showed no influence of the conductivity and the heat capacity of the solids on the heat transfer coefficient. Consequently the heat transfer coefficient in the form of the dimensionless Nusselt number can be described by the dimensionless numbers which characterize the gas-solid-flow near the wall. With the aid of a model of segregated vertical gas-solid flow, the flow pattern in the wall region can be calculated and thus the wall heat transfer which depends only on heat conduction in the gas and on the convective heat transfer by the gas. A simple correlation is presented for calculating the wall-to-suspension heat transfer in circulating fluidized beds.
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How to cite
APA:
Wirth, K.-E. (1995). Wall-to-Suspension Heat Transfer in Circulating Fluidized Beds. In Preprints 13th International Conference on Fluidized Bed Combustion (pp. 473-486). Kissimmee, Florida, US: New York: American society of mechanical engineers.
MLA:
Wirth, Karl-Ernst. "Wall-to-Suspension Heat Transfer in Circulating Fluidized Beds." Proceedings of the 13th International Conference on Fluidized Bed Combustion, Kissimmee, Florida New York: American society of mechanical engineers, 1995. 473-486.
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