Pneumatic Speed
Material movement is the measured rate at which air carries fibers through a ductwork system. The transport velocity must be high enough to keep heavy clumps from settling at the bottom of the pipes. If the rate is too low, the system will clog and bring the entire mill sequence to a halt.
Energy Requirement
Increasing the flow of air consumes more electricity at the fan motor. Finding the optimal transport velocity involves balancing the need for safe material passage against the goal of lowering operational costs. High speeds also create more friction between the fiber and the pipe walls which can cause static electricity.
Fiber Quality
Damage can occur if strands are slammed into the walls of the conduit too hard. A moderate transport velocity helps preserve the length and integrity of delicate fibers like high grade cotton. Excessive speed can create small knots called neps that ruin the final appearance of the yarn.
Operational Buffer
Engineers design systems to handle peak loads during startup or shutdown. Even if the normal transport velocity is low, the fan must have the capacity to surge to clear out potential blockages. Regular maintenance checks ensure that the air seals remain tight throughout the whole delivery line.
