水平管における旋回流空気輸送の研究 : 第3報,動力係数と付加圧力損失係数

概要

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Polystyrene, polyethylene and polyvinyl pellets with mean diameters of 1. 7, 3. 1 mm and 4. 3 mm, respectively, were transported as test particles in a swirling flow pneumatic conveying system consisting of a horizontal pipeline of 13 m length and 80 mm inner diameter. The initial swirl number was varied from 0. 58 to 1. 12, the mean air velocity from 9 m/s to 24 m/s and the solid mass flow rate from 0. 43 kg/s to 1. 17 kg/s. It is found that the critical and minimum air velocities of swirling flow pneumatic conveying are lower than those of axial flow pneumatic conveying, the maximum reduction rates being 13% and 17%, respectively. In the lower air velocity range, the power consumption and additional pressure drop are decreased by the swirling flow pneumatic conveying system.
一般社団法人日本機械学会の論文
1993-03-25