EFFECT OF KNIFE PENETRATION ANGLE ON IMPROVING THE CUTTING EFFICIENCY AND REDUCING THE ENERGY CONSUMPTION
Résumé
ABSTRACT This experiment is dedicated to study the impact of essential technical and engineering parameters on the performance of an agricultural residue shredder for producing non-traditional ruminant nutrition. The study was carried out in the workshop of Agriculture college at Ain Shams University in Egypt, during the academic year of 2023-2024. The investigation tested two shredder knife speeds of (1300 vs 1500 rpm), two feeding rates of (1.5 vs 3 kg.min-1), and two penetration angles of (20° vs 30°). The evaluated technical traits comprised: productivity, cutting efficiency, total required power, and specific energy. The moisture content of palm frond was 39%. The findings displayed that the greatest recorded productivity was 108.23 kg.h-1, with the highest shredding efficiency was 87.67%. The least overall required cutting power was 1.040 kW, furthermore, the least recorded specific energy value was 0.01255 kW·h·kg⁻¹. These results indicate that optimizing shredder knives’ velocity and feeding rates can lead to enhance efficiency and reduce the energy consumption in agricultural residue handling, contributing to a more efficient feed production. The Statistical System that was adopted for Analysis was Genstat Discovery Edition 4. To analyze the data according to a split experiment in a randomized complete block design (RCBD), the Least Significant Difference (LSD) test p< 0.05 was used to compare the means.
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