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Información tecnológica

On-line version ISSN 0718-0764

Abstract

FLORES, Jorge E; VILLAFLOR, Gloria; VELASCO, Jorge W  and  BISONARD, Eduardo R. Determination of the Velocity of ParticlesTransported by Saltation in Horizontal Ducts. Inf. tecnol. [online]. 2017, vol.28, n.6, pp.199-206. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642017000600021.

The minimum transport velocity for different materials and particle sizes is determined experimentally for two duct diameters. To reduce the erosion of such ducts and the energy consumption of the aspirating device, it is advantageous that the design velocity of the air flow be the lowest possible, being this the transport saltation velocity of the particles. The technical literature provides values of this minimum air velocity. The experimental values are verified with those calculated using the aforementioned correlations and the influence of the duct size in the calculation of the transport saltation velocity is studied. This study shows that the variation of the diameter of the duct has little influence on the variation of the transport velocity by saltation for the experimentally conditions studied in this work.

Keywords : localized ventilation; particles transport; minimum air velocity; saltation velocity.

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