Modeling of cassava peeling performance using dimensional analysis

Abstract

Cassava peeling constitutes global challenge despite increasing consumption of its end products.  To provide scientific approach for mechanical peeling, the movement of tuber in the peeling chamber was analyzed and validated.  Dimensional analysis was used to establish model equations for predicting the relationship between dimensionless functional properties, and crop and machine parameters.   An improved cassava variety and 2014 model cassava peeler was used for the experiment. The effective machine speed varied from 100-140 r/min for smooth-edge and 140-160 r/min for serrated-edge cutting tool.  The results showed that when using smooth-edge; peeling efficiency (μ) was ranged from 84.97%-94.60%, mechanical damage (λ) was ranged from 1.57%-11.19%, peel retention (P) was ranged from 5.41%-15.03% and throughput (η) was ranged from 387.10-1046.50 kg/h.  When using serrated-edge, μ was ranged from 81.24%-91.36%, λ was ranged from 6.36%-8.41%, P was ranged from 8.64%-19.34% and η was ranged from 248.28-625.00 kg/h.  A linear relationship was established between the machine speed versus ratio of velocity of conveyance and peeling time.