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A study was conducted to optimize machine and operational parameters for the threshing of chickpea seeds using a portable solar-operated plot thresher. Experiments were conducted at different levels of independent parameters, viz. cylinder speed (8, 10, 12 m/s), concave clearance (10, 12, 14 mm) and concave grate clearance (8, 9, 10 mm). Dependent parameters such as threshing efficiency, cleaning efficiency, seed damage, threshing capacity, power consumption and seed germination were assessed. Face-centered central composite design was used for experimental design, result analysis and optimization using Design-Expert 11.1.0.1 software package. The optimized combination for threshing of chickpea seeds was found to be cylinder speed (10 m/s), concave clearance (14 mm) and concave grate clearance (9 mm).

Keywords

FCCCD, Optimization, Plot Thresher, Threshing.
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