Development and Performance Evaluation of a Rice Thresher for Rural Farmers in Ganye Adamawa State Nigeria
DOI:
https://doi.org/10.24203/612j3a94Keywords:
Rice, threshing, efficiency, throughput capacity, percentage losses, engine speed, rural farmers and processing.Abstract
Threshing of rice is one of the unit operations during rice processing where grain losses are incurred most. In addition, most of the existing rice threshing machines seem to be expensive and sophisticated for the rural farmers in the study area. This machine was conceived, developed with locally available materials to improve rice production and accompanying profitability. The machine was constructed locally, tested and found to be efficient and affordable. The performance evaluation shows that, the mean values of the throughput capacity of the machine at varying engine speed were significantly different (p ≤ 0.05) and increased with increasing engine speed. The values of throughput capacity are 50.52 kg/hr, 105.94 kg/hr and 193.58 kg/hr corresponding to 780 rpm, 920 rpm and 1014 rpm engine speed respectively. However, the efficiency and percentage losses for the varying engine speeds were not significantly different (p ≤ 0.05), while the percentage losses tend to decrease (12.20%, 12.00% and 10.47%) with increasing speed, the efficient was almost the same (88.00%) for all the engine speeds. An optimum engine speed of 920 rpm was recommended for optimum performance and reduced wear and tear of the machine components.
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