STUDY ON PHYSICAL AND ENGINEERING PROPERTIES FOR GRAINS OF SOME FIELD CROPS | ||
| Misr Journal of Agricultural Engineering | ||
| Article 17, Volume 26, Issue 4, October 2009, Pages 1933-1951 PDF (257.55 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/mjae.2009.107579 | ||
| Authors | ||
| Y.A. El Fawal1; M.A. Tawfik2; A.M. El Shal2 | ||
| 1Researcher, Agric. Eng. Res. Inst., Giza, Egypt. | ||
| 2Lecturer, Agric. Eng. Dept. Fac. of Agric., Zagazig Univ., Egypt. | ||
| Abstract | ||
| The present study aimed to determine and recognize a database of physical and engineering properties of grains of some main and popular feed, industrial crops which play an important role in designing and developing of specific machines and their operations such as planting, harvesting and grading .The studied crops namely fennel flower, rice (Giza101), rice (Giza 177), broad bean, corn (hyb. 310), corn (hyb. 352), wheat (Giza9) and wheat (Giza 168)and their selection based on their recent coverage area and the expected future expansion of each variety. Various physical properties including grain dimensions (length, width and thickness), the weight of thousand grain, bulk density, percent of sphericity, projected area , and the mechanical properties including angle of repose and coefficient of friction, in addition to the aerodynamic properties including terminal velocity, drag coefficient and Reynold's number, were determined at storage moisture content 7–12%(wb).The obtained data showed that it is recommended to use the stainless steel or galvanized iron in manufacturing of seed hopper used in planting machines, silos and storage containers with sides inclination of 40○ to allow an easily sliding for the studied grains.. The physical properties of seed play an important role to select the proper separating and cleaning equipment and the main dimensions are considered in selecting and designing the suitable size of the screen perforations. Also, the average terminal velocities of grains were 4.17, 7.32, 7.02, 20.16, 15.34, 14.69, 8.00 and 7.58 m/s for fennel flower, rice (Giza101), rice (Giza 177), broad bean, corn (hyb. 310), corn (hyb. 352), wheat (Giza9) and wheat (Giza 168) respectively. Reynold's number of the terminal velocities of the studied grains exceeds the critical velocity of Reynold's number (RN=2100) in the range of turbulent flow except the fennel flower seeds. | ||
| References | ||
|
El-Raie, A.E.S., N.A. Hendawy and A.Z. Taib 1996. Study of physical and engineering properties for some agricultural product , Misr J. of Agric. Eng., 13 (1): 211-226.
El–Sahrigi, A. F. 1997. Fundamental of food processing engineering. Acad. Library. Egypt.
Hexing, H. U. 1989.Effect of design parameters on cleaning performance in an oscillating screen-blower cleaning unit. M.Sc. Thesis, Faculty of the Graduate School, universisy of the Phillippins,Los Banos,Phillippins.
Klenin, N. I., I. F. Popov and V. A. Sukun 1985. Agricultural machines theory of operation, computation of controlling parameters and the conditions of operation. A merind publishing Co., PVT. Ltd., New Delhi, pp. 633.
Kochhar, A. and C. K. Hira 1997. Nutritional and cooking evaluation of green gram cultivars . J. of Food Science and Technology. 34 (4): 328-330.
Lgathinathane , K. G. and H. D. Hana 1998. The physical measurement of quality in Canned Peas. Commonwealth Sci. and Ind. Org. (Australia) Bul. 154.
Matouk, A. M., S. M. Radwan, M. M. El–Kholy, and T. R. Ewies2004 Determination of seeds density and porosity for some cereal crops. Misr J. of Agric. Eng., 21 (3): 623–641.
Nimkar, P. M. and P. K. Chattopadhyay 2001. Some physical properties of green gram. J. Agric. Eng. Res., 80 (2): 183–189.
Nonami, S. k. and S. O. Nelson 2002. Dimensional and density data for seeds of cereal seed and other crops. Trans.of the ASAE. 45 (1): 165–170.
Sabbah, M. A., S. N. Soliman and M. O. Yehia 1994. Physical properties of Egyptian paddy rice related to steeping process. Misr J. of Agric. Eng., 11 (1): 248–260.
Sitkei ,G. 1987. Mechanics of Agricultural Materials. Developments in Agricultural Engineering 8. ELSEVIER, Amsterdam, Oxford,New York, Tokyo. 294–295. | ||
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