الفهرس 
REVIEW OF LITERATUREOnly 14 pages are availabe for public view
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Abstract
The main aim of the present study is develop, manufacture and evaluate a garlic peeler which is made from local raw materials. The effect of different rotational speeds of disk (210, 240 and 270 rpm), operating times (1, 2 and 3 min) and batch loads (0.5, 1.0 and 1.5 kg) were studied. The peeler productivity, efficiency, damage cloves percentage, energy requirement, specific energy consumption and costs were determined. The obtained results indicated that, the average of garlic cloves length, width and thickness were 28.26 3.58, 13.06 2.31 and 9.60 1.90 mm, respectively. The average surface and cross-sectional of areas were 291.07 68.91 and 289.06 54.92 mm2 for the garlic cloves. The average bulk density of the garlic cloves was 655.01 9.78 kg m-3. The average angle of repose was 25.15 ± 2.24º. The average friction angles were 24.3 ± 0.96, 26.5 ± 0.41 and 29.6 ± 0.47º on the galvanized steel, plywood and concrete surface, respectively. The crushing load of the garlic cloves was 127.32 9.75 N for the size bulb. The garlic peeler productivity increased from 17.88 to 19.33 and 8.52 to 29.04 kg h-1, with increasing rotational speed of disk and operating time, respectively and it decreased from 28.84 to 12.46 kg h-1 with increasing batch load from 0.5 to 1.5 kg. The peeler efficiency increased with increasing rotational speed of disk, operating time and batch load. The highest value of damaged cloves percentage (0.26%) was found for 270 rpm rotational speed of disk at 1 min of operating time for 1.5 batch load. The specific energy consumption decreases with increasing rotational speed of disk and operating time. The total cost of garlic peeler decreased from 0.230 to 0.215 and 0.402 to 0.105 LE kg-1 with increasing rotational speed of disk and operating time, respectively.