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HAIT Journal of Science and Engineering Volume x, Issue x, pp. xxx-xxx © 2006 Holon Institute of Technology | |||||
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The effect of pipe inclination | |||||
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1Holon Academic Institute of Technology, 52 Golomb,
Holon 58102, Israel 2Agricultural Research Organization, POB 6, Bet-Dagan 50250, Israel 3Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel *Corresponding author: tanai@hit.ac.il Received 11 July 2006, accepted 24 July 2006 | |||||
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The dynamics and structure of a fluidized bed in inclined columns are investigated experimentally. Experiments were conducted in a glass column of L/D = 150, and diameter of 2.78 cm, which can be positioned in the whole range of inclination angles, from horizontal to vertical. The fluidizing agent is water and the grain material is particles of different densities and characteristic diameters. Measurements of the pressure loss, flow rate of the fluidizing agent and fluidized bed position and height are carried out. Particle flow patterns were visualized using a digital camera. The expansion process of the fluidized bed depends strongly on the inclination angle. Consequently the critical velocity for the bed escape varies with the column inclination angle and exhibits a maximum at about 45o. | |||||
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