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Effect of Particle Coating on Fluidized Bed Heat Transfer
Umeå University, Faculty of Science and Technology, Applied Physics and Electronics.
Umeå University, Faculty of Science and Technology, Applied Physics and Electronics.
Umeå University, Faculty of Science and Technology, Applied Physics and Electronics, Energy Technology and Thermal Process Chemistry. Umeå University, Faculty of Science and Technology, Applied Physics and Electronics.
Department of Chemical & Biological Engineering, UBC, Canada.
2004 (English)In: Journal of Industrial and Engineering Chemistry, ISSN 1226-086X, E-ISSN 1876-794X, Vol. 43, 5763-5769 p.Article in journal (Refereed) Published
Abstract [en]

Heat-transfer coefficients from a fluidized suspension to immersed stainless steel spheres and an aluminum cylinder were studied in a laboratory-scale bubbling fluidized bed using coated and uncoated silica sand particles from a 90-MWth circulating fluidized bed (CFB), as well as a 30-MWth bubbling fluidized bed (BFB). The experiments were carried out for gas-velocity-tominimum-fluidization-velocity ratios (u/umf) from 1 to 3.5 and mean particle diameters of 350and 635 ím. The heat-transfer coefficients for the coated particles were lower than those for the uncoated particles in all cases, with the difference between uncoated and coated sand particles being more significant for the CFB material than for the BFB sand.

Place, publisher, year, edition, pages
2004. Vol. 43, 5763-5769 p.
Identifiers
URN: urn:nbn:se:umu:diva-19776DOI: 10.1021/ie034317uOAI: oai:DiVA.org:umu-19776DiVA: diva2:207366
Available from: 2009-03-11 Created: 2009-03-11 Last updated: 2017-12-13Bibliographically approved

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