MANUFACTURE A SOLAR DRYER FOR DRYING SOME AGRICULTURAL PRODUCTS | ||||
| Misr Journal of Agricultural Engineering | ||||
| Article 4, Volume 29, Issue 4, October 2012, Page 1295-1314 PDF (747.04 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/mjae.2012.101188 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Mahmoud M. A. Ali; Moheb M. A. El-Sharabasy | ||||
| Assist. Prof. of Agric. Eng., Fac. of Agric., Zagazig Univ., Egypt. | ||||
| Abstract | ||||
| The objectives of this study were to develop and evaluate a solar dryer for drying by solar energy, determination of the optimum conditions for the solar dryer during the drying process of mango slices, okra slices and mint and comparing the cost of the solar dryer and drying on trays by direct sun . Two experimental groups were carried out for each crop. Every group consists of 9 treatments. The first group of tests was run under different number of trays 4, 5, and 7 trays with different product masses. The second group of tests was run under different number of open holes 5, 7, and 9 holes also with different product masses. It was lower cost for the drying products with obtain to suitable moisture content is (759.9, 934.8 and 1900.6) L.E/Mg under seven open slots, and four trays. In order to minimize drying cost, it is recommended to use the manufactured solar dryer for drying by solar energy for drying mango slices, okra slices and mint under the following conditions: Number of trays of (5 trays), number of open holes of (7 holes) and Mass of product of (1.25, 1.00 and 0.30 kg/tray) with okra, mango and mint, respectively. | ||||
| References | ||||
|
Ajao, K. R. and A. A. Adedeji (2008): Assessing the Drying rates of some Crops in Solar Dryer. (Case Study: Vegetables, tuber and grain crops). Journal of Research information in Civil Engineering, Vol.5, No.1, 2008. Ali, M. M. A. (2003):Development of a simple device for drying some agricultural products. PH. D. thesis.Department of Agricultural Engineering, Faculty of Agriculture, Zagazig University.
Ali, M. M. A. (2008):Manufacture of a solar dryer for drying garlic and red pepper (Chili). Egypt J. of App. Sci., 23 (3):407-425.
Alonge, A. F. and R. O. Hammed (2007): A direct passive solar dryer for tropical crops. African crop science conference proceeding. Vol. 8. pp: 1643-1646.
Awady, M. N. (1978): Tractor and farm machinery. Text book, Faculty of Agriculture, Ain-Shams University. Pp: 164-167.
Awady, M. N; M. M. Moustafa, A. M. El-Gindy and M. A. El-Genaidy (1988): A trial on solar energy drying for agricultural products with simple setup. Misr, J. Agric. Eng. 5 (3): 377-392.
Awady, M. N; S. A. Mohamed; A. S. El-Sayed and A. A. Hassanain, (1993): Utilization of solar energy for drying processes of Agricultural products. Misr, J. Agric. Eng. 10 (4): 794-804.
Bala, B. K. (2009): Solar drying of fruits, vegetables, spices, medicinal plants and fish: Developments and Potentials. International Solar Food Processing Conference 2009.
Dadashzadeh, M. (2006): Design & fabrication of an active solar dryer for grape drying. M. Sc. Thesis. University of Shiraz.
EL-Amin, O. M. A; M. A. Ismail, E. A. Ahmed and W. Luecke (2005): Design and construction of a solar dryer for mango slices. Dept. of Agric. Eng., Faculty of Agriculture, University of Khartoum, Sudan.
Madhlopa, A., Jones, S.A and Kalenga Saka, J.D. (2002): A solar air heater with composite-absorber systems for food dehydration. Renewable Energy, 27: 27–37.
N.R.E.A. and U.S.A.I.D. (1991): “Egyptian solar radiation atlas” New and Renewable Energy Authority.
Singh, P. L; S. Ganesan and S. Singh (2005): Performance study of a solar tunnel dryer for horticultural crops. Proceedings of 39th annual convention and symposium of Indian society of agricultural engineers. March 9-11, 2005.
Yahya, M; M. H. Ruslan, M. Y. Othman, B. Yatim, M. Y. Sulaiman, S. Mat, C. H. Lim, M. A. Alghoul, A. Zaharim and K. Sopian (2010): Evaluation of energy requirement for drying of green tea using a solar assisted drying system (V-groove solar collector). Proceedings of the 3rd WSEAS Int. Conf. on Renewable Energy Sources, (2010). | ||||
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