Kinerja Pembersih Biji-Bijian Tanaman Pangan APB-M1 pada Pembersihan Jagung Pipilan

Abstract

The research to evaluate perfornlance of grain cleaner APB-MI was conducted in the Research Institute for Maize and Other Cereals tit the beginning of 1998. Five engine circles were tested: 1200, 1350, 1500, I650 and 1800 rpm with three replications. Bisma variety was used us maize grrrin with 13% moisture content (wet basis) and for each replication the amount ulu& 25 kg. The results showed that power transmission efficiency was ut /he average of 95.0% on the strainer and 94.2% on the blower. Fuel conszrtnption was at the rate of 0,81 //hour with average cleaning capacity of 598 kg/hour. Ar the lowest engine circle (1200 rpm) fuel consumption was 0,74 I/hour wi/h cleaning capacity $97 kg/hour and at the highest engine circle (1800 rpnl) jilc.1 consumption was 0,87 I/hour with cleaning capacity 662 kg/hour. Fzlcl consumption for cleaning maize grain was 0,00135 I/kg grain. Engine circle was afSect cleaning quality (whole, broken, losses grain and trash). The average of cleaning efficiency was about 98.8% when the engine circle was 1200 rpm, cleaning eflciency was 97,5% but when engine circle increase to 1800 rpm cleaning eflciency became 99,6%. Average of performance 1nu'c.x was 0,975. The highest performance index was 0,981 when engine circle wm 1500 rpm. When engine circle decreased to 1200 rpnz, the performance index also decreased to 0,970 but when engine circle increased to 1800 rpn~th e performance index was still decrease to 0,968.