分岐による濃度低下現象を利用した回転フィルターの開発

概要

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To remove particles in two phase fluid, rotating filters were developed based on the phenomena that the concentration of particles decreased by passing through branch pipes. Two types of rotating filters were examined. One of them was composed of outlets set on rotating disk, and the other was composed of outlets set on tank surface and a vane rotating over the outlets. Both systems used the peripheral speed of rotating disk or rotating vane in place of the flow speed in main pipe. Their filtering effects were examined experimentally by using two phase fluid composed of polystyrene spherical particles and salt water with the same specific gravity as particles, and the experimental results showed good agreements with the theoretical predictions. Furthermore, it was examined whether rotating filters could remove water droplets dispersed in air, and they were found to remove them more efficiently than the theoretical predictions because of inertia effects.