Abstract
The present work deals with the measurement of air flow in the transport duct of the DREFIII friction spinning machine. In this work, the direction and speed of air inside the transport duct was measured with the help of a three-hole probe. Turbulence in the air flow was assessed with the help of a tuft probe. The influence of opening roller speed, drum speed difference and suction air pressure was studied on air speed inside the transport duct. The results show that air flow near the inlet zone of the duct is highly turbulent and there are large deviations in air velocity and direction of air flow. The middle zone of the inlet of the duct has much more streamlined flow. However, the variation in air speed and direction of air flow is comparatively less near the duct. It is also observed that air velocity in the duct is mainly influenced by the opening roller speed followed by suction air pressure. Drum speed difference does not have significant influence on the air velocity in the duct.
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