Modifying a thresher for ensiling the green rice straw by shredding [electronic resource].

By: Contributor(s): Language: English Summary language: Arabic Description: P. 482-500Other title:
  • تعديل آلة دراس لسيلجة قش الأرز الأخضر بالتمزيق.‪‪‪ [Added title page title]
Uniform titles:
  • Misr Journal of Agricultural Engineering, 2010 v.27 (2) [electronic resource].
Subject(s): Online resources: In: Misr Journal of Agricultural Engineering 2010.v.27(2)Summary: A specific modification was done in this study to convert the function of the thresher to be suitable for shredding the green rice straw to be prepared after that as a silage. The indicators of shredder (modified thresher or shredding machine) performance were studied under the effect of different levels of feed rate, shredding cylinder speed, concave clearance ratio and bulk density of the shredded green rice straw. The most important results showed that at higher shredding efficiencies of green rice straw, the silage characteristic might be improved. In addition, the reduction percentage from the highest to the lowest shredding efficiency was of 3.41% and all the values were very close to each other. The lowest cost for producing of one megagram from shredded green rice straw was of 14.05LE and the consumed energy for the unit was of 5.632kW.h/Mg at feed rate of 300kg/h, shredding cylinder speed of 18.4m/s and concave clearance ratio of 1.0. During ensiling process, the bulk density of 66.5kg/m3 has achieved a preferable results for silage temperature and its quality in comparison with the two other bulk densities.
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A specific modification was done in this study to convert the function of the thresher to be suitable for shredding the green rice straw to be prepared after that as a silage. The indicators of shredder (modified thresher or shredding machine) performance were studied under the effect of different levels of feed rate, shredding cylinder speed, concave clearance ratio and bulk density of the shredded green rice straw. The most important results showed that at higher shredding efficiencies of green rice straw, the silage characteristic might be improved. In addition, the reduction percentage from the highest to the lowest shredding efficiency was of 3.41% and all the values were very close to each other. The lowest cost for producing of one megagram from shredded green rice straw was of 14.05LE and the consumed energy for the unit was of 5.632kW.h/Mg at feed rate of 300kg/h, shredding cylinder speed of 18.4m/s and concave clearance ratio of 1.0. During ensiling process, the bulk density of 66.5kg/m3 has achieved a preferable results for silage temperature and its quality in comparison with the two other bulk densities.

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