PERFORMANCE EVALUATION OF A MECHANISM FOR GREEN ONION HANDLINGMayhoub, M. A.; E. A. El-Sahhar; A. G. El-Kabany and A. A. Abdel-Hafez ; M., Mayhoub
AbstractThe objectives of this study were to design and performance analysis a mechanism for handling green onion crop, as well as, improving the crop quality based on the suggested handling system. Therefore, a mechanism had been designed, manufactured in the workshop of the Agricultural Engineering Department, Faculty of Agriculture, Ain Shams University. However, the suggested handling system consists of the feeding unit, trimming unit which based on rotary cutting mechanism, antioxidant unit, and tying unit. The following technical parameters had been considered to evaluate the suggesting mechanism: feeding rate, cutting speed and feeding belt speed. However, the following technical indicators had been estimated such as machine productivity, cutting efficiency, cutting offset angle of plants, tying position of onion bundles from cutting disc and the quality of the final product. Results indicated that the highest cutting efficiency was 89.3 %, cutting offset angle of plants was 73.7% and cutting capacity was found to be 124.14 kg per hour (0.99 ton per day of 8 working hour) at 60 rpm drum shaft speed, 0.64 kg/min feeding rate (38.4 kg per hour) and when operated at slower than 870 rpm (7.10 m/s) cutting disc speed.
|Keywords||Postharvest, Handling processes, Cutting operation, Trimming operation, Cutting efficiency.||Issue Date||2009||Journal||Misr Society of Agric. Eng.||URI||http://research.asu.edu.eg/handle/123456789/2308|
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