Manufacturing and Performance Evaluation of a Machine for Chopping Some Agricultural Residues | ||||
| Damietta Journal of Agricultural Sciences | ||||
| Volume 2, Issue 2, July 2023, Page 66-76 PDF (1.77 MB) | ||||
| Document Type: Original research papers | ||||
| DOI: 10.21608/djas.2023.406558 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Moheb El Sharabasy  1; Nada Gohar2
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| 1Agricultural Engineering Department, Faculty of Agriculture, Damietta University, Egypt | ||||
| 2Agric., Eng., Dept., Fac. of Agric., Damietta Univ., Damietta, Egypt. | ||||
| Abstract | ||||
| Experiments were conducted to assess the performance of the chopping machine in order to use the final product for the production of animal feed and a variety of industrial products. The chopping machine's performance was tested using three different types of crop residues (rice straw, corn stalks, and cotton stalks), three different moisture contents for crop residues (wet base), and four different chopping knife speeds (1200, 1500, 1900 and 2200). Results showed that the highest machine productivity values were 0.436, 0.42 and 0.34 Mg/h, the highest fineness degree values were 81, 75 and 45%, the highest values of machine efficiency were 94, 96 and 95%, while the lowest specific energy values were 3.46, 5.29, 2.24 kW.h/Mg and the lowest operational cost values were 132.72, 138.1 and 170.1 L.E/Mg for rice straw, corn stalks and cotton stalks, respectively. The maximum values indicated were measured under the following conditions: Chopping knives speed at 1900 rpm equals 89.54 m/s, therefore feeding drums speed at 208 rpm equals 9.8 m/s for different agricultural residues containing moisture contents 6.76, 8.22 and 10.63% for rice straw, corn stalks and cotton stalks, respectively and constant knife angle of 10 degree and constant clearance between fixed and moving knives of 2 mm. | ||||
| Keywords | ||||
| Cutting; rice straw; corn stalks; cotton stalks; wastes; farm residues | ||||
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