Cleaning Efficiency Measurement and Optimisation
topic
Cleaning efficiency (CE) is calculated as CE = (AT - AF) / AT × 100, where AT is total waste (%) and AF is good fibres eliminated (%). For example, if AT = 2.1% and AF = 0.65%, then CE = 69%. When waste elimination was raised from 0.6% to 1.2% by modifying settings, foreign matter eliminated increased by only 41% while fibre elimination increased by 240% (Siersch investigation).
Role
The cleaning efficiency formula quantifies the trade-off between impurity removal and fibre loss. It demonstrates that aggressive cleaning settings disproportionately increase fibre loss relative to actual cleaning improvement, guiding optimal machine adjustment.
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