Hassan, M., Nasrat, L., Mahmoud, W., Taraby, H. (2023). Evaluation the effectiveness of an indirect solar dryer under Aswan governorate conditions. Aswan University Journal of Environmental Studies, 4(5), 315-332. doi: 10.21608/aujes.2023.214979.1159
Mostafa Omar Hassan; Loai Nasrat; Wael Abou El-magd Mahmoud; Hassan Haffez Hassan Taraby. "Evaluation the effectiveness of an indirect solar dryer under Aswan governorate conditions". Aswan University Journal of Environmental Studies, 4, 5, 2023, 315-332. doi: 10.21608/aujes.2023.214979.1159
Hassan, M., Nasrat, L., Mahmoud, W., Taraby, H. (2023). 'Evaluation the effectiveness of an indirect solar dryer under Aswan governorate conditions', Aswan University Journal of Environmental Studies, 4(5), pp. 315-332. doi: 10.21608/aujes.2023.214979.1159
Hassan, M., Nasrat, L., Mahmoud, W., Taraby, H. Evaluation the effectiveness of an indirect solar dryer under Aswan governorate conditions. Aswan University Journal of Environmental Studies, 2023; 4(5): 315-332. doi: 10.21608/aujes.2023.214979.1159
Evaluation the effectiveness of an indirect solar dryer under Aswan governorate conditions
2Department of Electrical Engineering, Faculty of Engineering, Aswan University, Aswan , Egypt
3faculty of Agricultral Engineering Al azhar university Assuit Branch
4Faculty of Agriculture and Natural Resources, Department of Agricultural Engineering and Biosystems, Aswan University
Abstract
This paper presents an evaluation of an indirect solar dryer consisting of a solar collector, trays located in the drying chamber, and an air outlet opening above the drying chamber. The solar collector consists of a Corrugated galvanized steel panel painted black and covered with sheets of transparent glass, 3 mm thick from the top, and with dimensions of 2400 x 1100 mm. The side walls of the solar collector are made of wood, are the insulation is thermal wool with a 50 mm thickness and are painted black from the outside. The drying room measures 1100 x 1200 mm, is made of wood, is thermally insulated from the inside, and contains a number of shelves. The solar dryer was tested with a load of henna leaves, it was exposed to solar radiation from 8:00 a.m. to 3:00 p.m. A leaves of henna drying test is used to evaluate solar dryers, with a maximum average temperature of 56.2°C for the load test. 3000 g of henna leaves were used in the load test to gauge how well the solar dryer worked. For the solar drying test, 3000 g of henna leaves were dried from a starting moisture content of 74% W.b to a final moisture content of 8.4% in 7 hours of sunlight. The drying rate was calculated to be 306.7 g/h for the load test. The drying efficiency was calculated to be 19.5%. The average collector efficiency was also discovered to be 79.7% for the load test.
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