Indian Journal of Science and Technology
Year: 2020, Volume: 13, Issue: 43, Pages: 4446-4453
Sari Farah Dina1*, Jufrizal2, R Siti Masriani1, Edwin H Sipahutar1,Harry P Limbong1, Erni Misran3
1Center for Research and Standardization of Industry Medan, Indonesia
2Faculty of Mechanical Engineering, Medan Institute of Technology, Medan, Indonesia
3Department of Chemical Engineering, Universitas Sumatera Utara
Email: [email protected]
Received Date:31 October 2020, Accepted Date:16 November 2020, Published Date:09 December 2020
Objectives: This study aims to develop better solar dryer for paddy drying. Methods and Analysis:The design and fabrication of a parabolic cylinder type collector-drying unit has been developed. Paddy is dried by the variation which took place into four batches starting from batch 1 (08:30 - 09:20), batch 2 (09:30- 10:10), batch 3 (10:20 - 11:10) and batch 4 (11:40 - 12:20) Western Indonesia Time (GMT +7), with a capacity of 5 kg of paddy/batch and solar radiation is in the range of 408.5 - 547.2 Watt/m2. The highest irradiation takes place in batch 2 with the maximum temperature inside the dryer reaching 74◦C. Findings: Overall the experiments achieved that paddy temperature are in the range of 43 – 45◦C, with the shortest drying time achieved in batches 2 and batch 4 i.e. 40 minutes. Thermal efficiency are in the range of 37.91% - 50.35%, SEC of 5.318 - 7.042 MJ/kg H2O evaporated and drying rate of 1.06 - 1.38 kg/hrs. Thus, this solar dryer is more effective than industrial inclined bed dryer or theindustrial horizontal rotary dryer. Novelty: The solar dryer using a parabolic cylinder type solar collector with a screw conveyor has been designed which can reduce drying time and moisture content better.
Keywords: Solar dryer; parabolic collector; paddy; efficiency
© 2020 Dina et al.This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)
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