Experimental coating and heat transfer studies in a vibrating fluidized bed |
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Authors: | N. Abuaf C. Gutfinger |
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Affiliation: | Faculty of Mechanical Engineering, Technion—Israel Institute of Technology, Haifa, Israel |
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Abstract: | This work presents an experimental study of the heat transfer in a vibrofluidized bed and an investigation of the vibrofluidized bed coating process of thin copper plates.At superficial velocities close to that of minimum fluidization the heat transfer coefficient increases with the air flow rate and also with the immersion depth in the bed. It is independent of the initial object temperature.For different experimental conditions the obtained vibrofluidized bed coating thicknesses increase with the initial object temperature and immersion time. When compared with the theoretical predictions calculated for a regular fluidized bed, they show a good agreement. The temperature-time histories of the coated object are also recorded and compared to theoretical results. |
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