Development of a motorized ginger rhizomes peeling machine
A 5kg motorized ginger rhizomes peeling machine was designed and developed. Three moisture contents (70 %, 75 % and 80 %) wb, three feed rates (54 kg/hr, 68 kg/hr and 73 kg/hr) and three peeling speeds (230 rpm, 270 rpm and 300 rpm) were used to evaluate the performance of the developed machine. A 𝟑 × 𝟑 × 𝟑 factorial experiment in a randomized complete block design; replicated two times was used to study the effects of the three factors (moisture content, feed rates and peeling speed) on the performance parameters (peeling efficiency, peeling capacity and percent damage). The study showed that peeling efficiency increased with an increase in moisture content and peeling speed and decreased with an increase in feed rate. Peeling capacity decreased with a decrease in moisture content, and increased with an increase in peeling speed. Percent damage decreased with increasing moisture content, increased with an increase in feed rate and peeling speed. For a maximum peeling efficiency, peeling capacity and minimum percent damage, an optimum moisture content of 75 % wb, feed rate of 68 kg/hr and peeling speed of 270 rpm are recommended.
Key words: Ginger rhizomes, peeling capacity, peeling efficiency, peeling capacity, machine design.