Performance analysis of double-pass oscillating bed solar dryer for drying of non-parboiled paddy grains |
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Authors: | Ganapathy Ponnambalam Arul Arunachalam Veerappan Pitchaipillai Kumar |
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Affiliation: | 1. Department of Mechanical Engineering, National Institute of Technology, Tiruchirappalli, Tamilnadu, India;2. Department of Mechanical Engineering, Mahabarathi Engineering College, Villuppuram District, Tamilnadu, India |
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Abstract: | Drying of agricultural produce like paddy grains is necessary for reducing moisture content in them to the required level towards diminishing the deterioration and enhancing the storage time. Conventionally, open-space sun drying is widely used to reduce the moisture content of the most of the agricultural produce.. Now-a-day, so many solar dryers are used for drying agricultural produce. In the present work, a double-pass oscillating bed with a double-pass flat plate collector has been used for drying of non-parboiled paddy grains. The bed oscillated at a frequency of 2.75 Hz. The oscillating bed solar dryer can dry 45 kg of non-parboiled paddy grains in just a single day to the required level of moisture content, and the average moisture present in the dried grains was 13.55%. The average dryer thermal efficiency and pick-up efficiency in non-parboiled paddy were 28.79% and 52.17%, respectively. |
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Keywords: | Double-pass oscillating bed solar dryer double-pass solar flat plate collector dryer thermal efficiency pick-up efficiency |
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