EVALUATION OF LOCAL MACHINE PERFORMANCE FOR FABA BEAN CURSHING

Abstract

The main objective of this work was to performance evaluate for locally made small machine for faba bean crushing at moisture content of 9.5 % db. The performance of faba bean crushing machine was evaluated at different hammer drum speeds ( 1000, 1250, 1500 and 1750 r.p.m ), feeding rates ( 60, 90 and 120 kg / h ) and sieves holes diameter (2, 4 and 6 mm),were evaluated on the basis of curshing productivity (Mg/h), efficiency machine (%), total energy consumed (kW. h /Mg), Faba bean mean particle size % . The results indicated that the highest productivity was 118 kg/h and productivity efficiency 99 % obtained at 1750 r.p.m hammer drum speed , 6 mm sieves holes diameter and 120 kg / h feeding rate. The best result for crushed faba bean particle size was obtained at 1750 rpm, 2 mm sieves holes diameter and 60 kg/h feeding rate. While the minimum specific energy 7.50 kW.h /Mg was obtained at 1750 rpm, 6 mm sieves holes diameter and 120 kg / h feeding rate.