الفهرس 
REVIEW OF LITERATUREOnly 14 pages are availabe for public view
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Abstract
This study aimed to evaluate the performance of local corn sheller. It was evaluated at rotational speeds of (40, 60, 80, 100 and 120 rpm) and moisture contents of (12, 16 and 20%) of corn grains. The sheller productivity, shelling efficiency, unshelled grains, grain damage, loose grains at kernel outlet, specific energy consumption and operational costs were determined. The most important results obtained are summarized as follows:1.This study aimed to evaluate the performance of local corn sheller. It was evaluated at rotational speeds of (40, 60, 80, 100 and 120 rpm) and moisture contents of (12, 16 and 20%) of corn grains. The sheller productivity, shelling efficiency, unshelled grains, grain damage, loose grains at kernel outlet, specific energy consumption and operational costs were determined. The most important results obtained are summarized as follows: br 1.The productivity of the corn sheller decreased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest productivity (1.46 ton/h) was obtained at 120 rpm rotational speed and 12% moisture content, this was because the time of shelling was minimum compared to other treatment combinations, meanwhile the lowest productivity (0.43 ton/h) was obtained at 40 rpm rotational speed and 20% moisture content. br 2. The shelling efficiency decreased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest shelling efficiency (99.43%) was obtained at 120 rpm rotational speed and 12% moisture content meanwhile the lowest shelling efficiency (94.25%) was obtained at 40 rpm rotational speed and 20% moisture content. br 3. The unshelled grains increased with increasing the moisture content and decreased by increasing rotational speed, it is concluded that, the highest unshelled grains (5.75%) was obtained at 40 rpm rotational speed and 20% moisture content while the lowest unshelled grains (0.57%) was obtained at 120 rpm rotational speed and 12% moisture content. br 4. The grain damage increased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest grain damage (2.13%) was obtained at 120 rpm rotational speed and 20% moisture content meanwhile the lowest grain damage (0.21%) was obtained at 40 rpm rotational speed and 12% moisture content. br 5. Loose grains at kernel outlet decreased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest loose grains at kernel outlet (25.15%) was obtained at 120 rpm rotational speed and 12% moisture content while the lowest loose grains at kernel outlet (1.57%) was obtained at 40 rpm rotational speed and 20% moisture content. br 6.This study aimed to evaluate the performance of local corn sheller. It was evaluated at rotational speeds of (40, 60, 80, 100 and 120 rpm) and moisture contents of (12, 16 and 20%) of corn grains. The sheller productivity, shelling efficiency, unshelled grains, grain damage, loose grains at kernel outlet, specific energy consumption and operational costs were determined. The most important results obtained are summarized as follows: br 1. The productivity of the corn sheller decreased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest productivity (1.46 ton/h) was obtained at 120 rpm rotational speed and 12% moisture content, this was because the time of shelling was minimum compared to other treatment combinations, meanwhile the lowest productivity (0.43 ton/h) was obtained at 40 rpm rotational speed and 20% moisture content. br 2. The shelling efficiency decreased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest shelling efficiency (99.43%) was obtained at 120 rpm rotational speed and 12% moisture content meanwhile the lowest shelling efficiency (94.25%) was obtained at 40 rpm rotational speed and 20% moisture content.This study aimed to evaluate the performance of local corn sheller. It was evaluated at rotational speeds of (40, 60, 80, 100 and 120 rpm) and moisture contents of (12, 16 and 20%) of corn grains. The sheller productivity, shelling efficiency, unshelled grains, grain damage, loose grains at kernel outlet, specific energy consumption and operational costs were determined. The most important results obtained are summarized as follows: br 1. The productivity of the corn sheller decreased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest productivity (1.46 ton/h) was obtained at 120 rpm rotational speed and 12% moisture content, this was because the time of shelling was minimum compared to other treatment combinations, meanwhile the lowest productivity (0.43 ton/h) was obtained at 40 rpm rotational speed and 20% moisture content. br 2. The shelling efficiency decreased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest shelling efficiency (99.43%) was obtained at 120 rpm rotational speed and 12% moisture content meanwhile the lowest shelling efficiency (94.25%) was obtained at 40 rpm rotational speed and 20% moisture content. br 3. The unshelled grains increased with increasing the moisture content and decreased by increasing rotational speed, it is concluded that, the highest unshelled grains (5.75%) was obtained at 40 rpm rotational speed and 20% moisture content while the lowest unshelled grains (0.57%) was obtained at 120 rpm rotational speed and 12% moisture content. br 4. The grain damage increased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest grain damage (2.13%) was obtained at 120 rpm rotational speed and 20% moisture content meanwhile the lowest grain damage (0.21%) was obtained at 40 rpm rotational speed and 12% moisture content. br 5.Loose grains at kernel outlet decreased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest loose grains at kernel outlet (25.15%) was obtained at 120 rpm rotational speed and 12% moisture content while the lowest loose grains at kernel outlet (1.57%) was obtained at 40 rpm rotational speed and 20% moisture content.6.The cleaning efficiency of the corn sheller increased with increasing the moisture content and decreased by increasing rotational speed, it is concluded that, the highest cleaning efficiency (99.85%) was obtained at 40 rpm rotational speed and 20% moisture content meanwhile the lowest cleaning efficiency (99.32%) was obtained at 120 rpm rotational speed and 12% moisture content.3.The unshelled grains increased with increasing the moisture content and decreased by increasing rotational speed, it is concluded that, the highest unshelled grains (5.75%) was obtained at 40 rpm rotational speed and 20% moisture content while the lowest unshelled grains (0.57%) was obtained at 120 rpm rotational speed and 12% moisture content.4.The grain damage increased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest grain damage (2.13%) was obtained at 120 rpm rotational speed and 20% moisture content meanwhile the lowest grain damage (0.21%) was obtained at 40 rpm rotational speed and 12% moisture content. br 5.Loose grains at kernel outlet decreased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest loose grains at kernel outlet (25.15%) was obtained at 120 rpm rotational speed and 12% moisture content while the lowest loose grains at kernel outlet (1.57%) was obtained at 40 rpm rotational speed and 20% moisture content.6.The cleaning efficiency of the corn sheller increased with increasing the moisture content and decreased by increasing rotational speed, it is concluded that, the highest cleaning efficiency (99.85%) was obtained at 40 rpm rotational speed and 20% moisture content meanwhile the lowest cleaning efficiency (99.32%) was obtained at 120 rpm rotational speed and 12% moisture content.The cleaning efficiency of the corn sheller increased with increasing the moisture content and decreased by increasing rotational speed, it is concluded that, the highest cleaning efficiency (99.85%) was obtained at 40 rpm rotational speed and 20% moisture content meanwhile the lowest cleaning efficiency (99.32%) was obtained at 120 rpm rotational speed and 12% moisture content.The productivity of the corn sheller decreased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highestproductivity (1.46 ton/h) was obtained at 120 rpm rotational speed and 12% moisture content, this was because the time of shelling was minimum compared to other treatment combinations, meanwhile the lowest productivity (0.43 ton/h) was obtained at 40 rpm rotational speed and 20% moisture content.2.The shelling efficiency decreased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest shelling efficiency (99.43%) was obtained at 120 rpm rotational speed and 12% moisture content meanwhile the lowest shelling efficiency (94.25%) was obtained at 40 rpm rotational speed and 20% moisture content.3.The unshelled grains increased with increasing the moisture content and decreased by increasing rotational speed, it is concluded that, the highest unshelled grains (5.75%) was obtained at 40 rpm rotational speed and 20% moisture content while the lowest unshelled grains (0.57%) was obtained at 120 rpm rotational speed and 12% moisture content.4.The grain damage increased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest grain damage (2.13%) was obtained at 120 rpm rotational speed and 20% moisture content meanwhile the lowest grain damage (0.21%) was obtained at 40 rpm rotational speed and 12% moisture content.5.Loose grains at kernel outlet decreased with increasing the moisture content and increased by increasing rotational speed, it is concluded that, the highest loose grains at kernel outlet (25.15%) was obtained at 120 rpm rotational speed and 12% moisture content while the lowest loose grains at kernel outlet (1.57%) was obtained at 40 rpm rotational speed and 20% moisture content.6.The cleaning efficiency of the corn sheller increased with increasing the moisture content and decreased by increasing rotational speed, it is concluded that, the highest cleaning efficiency (99.85%) was obtained at 40 rpm rotational speed and 20% moisture content meanwhile the lowest cleaning efficiency (99.32%) was obtained at 120 rpm rotational speed and 12% moisture content.