DESIGN, FABRICATION, AND PERFORMANCE EVALUATION OF ONION (Allium cepа l.) BULB DESCALER
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Date
2024
Authors
ERNEST RODS L. LIBREA
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Abstract
This study focused on addressing the challenges faced by onion farmers in post-harvest operations, particularly in the effective removal of excess peel and dirt from onion bulbs. The primary objectives included designing, fabricating and evaluating the performance of an onion bulb descaler machine, using locally sourced materials.
The results indicated that the machine achieved a peak descaling efficiency of 90.43% at 500 rpm, with minimal damage to the bulbs and a descaling loss of 9.63%. A cost analysis revealed an initial investment of Php 45,016.20, a total annual cost of Php 19,735.00 and breakeven point of 7,853.85 kilograms per year, leading to a payback period of approximately 3.07 ears.
Overall, the study successfully designed and fabricated an onion bulb descaler that effectively reduced post-harvest losses and labor costs for small-scale farmers, enhancing the efficiency of onion handling and improving the economic viability of onion farming in the country. To enhance the machine's effectiveness, it is recommended to further optimize its design parameters, conduct additional testing on other vegetable such as garlic, and operate the brush rollers at a speed of 500 rpm. By implementing these recommendations, the onion bulb descaler can significantly improve post-harvest efficiency, reduce losses and increase profitability for onion farmers, ultimately contributing to the economic viability of onion farming in the Philippines.