DEVELOPMENT OF A NEW-INVENTED SYSTEM FOR TREE-BRANCHES CHOPPING | ||||
| Misr Journal of Agricultural Engineering | ||||
| Article 26, Volume 34, Issue 4, October 2017, Page 1989-2014 PDF (708.22 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/mjae.2017.96239 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| A. A. El Attar1; A. A. Bahnasawy2; I. Yehia3; S. A. Ali4; T. A. Hassan5 | ||||
| 1Eng., Ministry of Supply and Internal Trade, Cairo, Egypt. | ||||
| 2Prof. and Head of Ag. Eng. Dept., Fac. of Ag.(Moshtohor), Benha Univ., Egypt. | ||||
| 3Prof. and Head of Mech. Systems of Ag. Operations.,Ag. Eng. Res. Inst., Ag. Res. Center, Dokki, Giza, Egypt. | ||||
| 4Prof., Ag. Eng. Dept., Fac. of Ag. (Moshtohor), Benha Univ., Egypt. | ||||
| 5Prof., Ag. Eng. Dept., Fac. of Ag. (Moshtohor), Benha Univ., Egypt. | ||||
| Abstract | ||||
| The aim of this research is to develop, construct and evaluate a new-invented system for tree-branches chopping. The chopping system consists of frame, tires, draw-bar, 15-kW electrical motor, feeding, cutting, chopping units and suction-fan. The main results in this study can be summarized in the following points: The maximum average of chopping length of 19 mm was obtained by using chopping-knives speed of 900 rpm (27.31 m/s), concave-hole diameter of 20 mm and tree-branch diameter of 50 mm. Meanwhile, the minimum average of chopping length of 6 mm was obtained by using chopping-knives speed of 1200 rpm (36.92 m/s), concave-hole diameter of 14 mm and tree-branch diameter of 20 mm (at constant clearance of 5 mm, moisture-content of 10 %, cutting-knives speed of 450 rpm and feeding-drums speed of 10 rpm). The minimum productivity of 238 kg/h was obtained by using chopping-knives speed of 900 rpm (27.31 m/s), concave-hole diameter of 14 mm and tree-branch diameter of 50 mm. Meanwhile, the maximum machine productivity of 667 kg/h was obtained by using chopping-knives speed of 1200 rpm (36.92 m/s), concave-hole diameter of 20 mm and tree-branch diameter of 20 mm (at constant clearance of 5 mm, moisture-content of 10 %, cutting-knives speed of 450 rpm and feeding-drums speed of 10 rpm). The operation and production costs at chopping-knives speed of 1200 rpm (36.92 m/s) were 17.42 – 18.71 L. E./h and 28.01 – 68.98 L.E./ton for all tested tree-branch and concave-hole diameters. | ||||
| References | ||||
|
Abede Alrahman, H. S., 2013, Development of locally manufactured hammer mill knives using finite element method, M. Sc., Dept. of Ag. Eng., Fac. of Ag., Cairo Univ.: 97-102.
Abo-Habaga, M. M.; Yehia, I. and Abo-Elasaad, G. A., 2015, Development of a rice straw bales chopper, J.Soil Sci. and Agric. Eng., Mansoura Univ., Vol. 6 (10): 1249 – 1262.
Abo-Elasaad, G. A., 2016, Development of a rice straw bales chopper, M. Sc., Dept. of Ag. Mech., Fac. of Agriculture, Mansoura Univ.: 47 – 79
Ahmed, H. M., 2013, Development of grinding machine suitable for horticultural by-products, M. Sc., Dept. of Ag. Eng., Fac. of Agriculture, Cairo Univ.: 85-95.
Awady, M. N., 1978, Tractors and farm machines, in Arabic, text. Col. Ag., A. Shams U.: 164-167.
Bulletin of Central Administration for Agricultural Extension Service in 2015, in Arabic.
FAO, 2008, Animal production based on crop residues processing machines, Corporate Document, Repository, Ag. and Consumer Protection, http://www.fao.org/DOCREP/005/Y1936E/y1936e0.htm
Ghanem, G. H. and Basiouny, M. A., 2010, Modifying a thresher for ensiling the green rice straw by shredding, Misr J. Ag. Eng., 27(2): 482-500.
Kurt, G., 1979, Engineering formulas, 3rd Ed., MacGraw Hill Book N. Y.
Miu, P. I, Alvin, R. , Womac, A. R., Cannayen, I., Sokhansanj, S.,. 2006, Analysis of biomass comminution and separation, processes in rotary equipment – a review, ASABE Ann. Int. Mtg Sponsored by ASABE Oregon Convention Center, Portland, Oregon, Paper No. 066169. St. Joseph, Mich.
Okasha E. M.,. Awad, A. E, and Hashem, F. R., 2015, Developing a machine for shredding wastes to protect the environment from pollution, Int. J. Chem. Tech. Res. 8(12): 797-805.
Schubert, G and Bernotat, S., 2004, Comminution of non-brittle materials. Int. J. of Mineral Proc., 74S:19-30.
Woldt, D., Schubert, G. and Jäckel, H. G., 2004, Size reduction by means of low-speed rotary shears. Int. J. of Mineral Proc., 74S: 405-415 | ||||
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