Investigation of the Distribution of Velocities of the Air Flow Swirling by a Rotating Exhaust Cylinder

Abstract

For the improvement of the efficiency of systems of local exhaust ventilation, it is necessary to localize the emission of pollutants with minimum losses of the electric power. The application of rotating exhaust cylinder in a shelter may lead both to a decrease in the dust losses into the aspiration system and to lowering the costs of transportation of dusty aerosols in air ducts. We study the velocities of distribution of the airflows near the rotating exhaust cylinder depending on the frequency of rotation and the discharge of exhaust air. The accumulated results can be used in designing closed local exhaust hoods (aspiration shelters equipped with a dust-collecting chamber).