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​Journal of Bioscience and Agriculture Research

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J. Biosci. Agric. Res. | Volume 23, Issue 02, 1920-1930 | https://doi.org/10.18801/jbar.230220.236
​Article type: Research article | Received: Article received: 30.01.2020; Revised: 17.02.2020; First published online: 15 March 2020.

Experimental investigation of solar bubble dryer for rough rice drying in Bangladesh

Md. Ashraful Alam 1, Chayan Kumer Saha 2, Md. Monjurul Alam 2, Mohammad Rezaul Manir 1, Mahedi Hasan 3 and Md. Mamunur Rashid 1
1 Farm Machinery and Post Harvest Technology Division, Bangladesh Rice Research Institute, Gazipur, 2 Dept. of Farm Power and Machinery, Bangladesh Agricultural University (BAU), Mymensingh.
3 Bangladesh Agricultural Research Institute, Gazipur, Bangladesh.

✉  Corresponding author: ashraf1982s@gmail.com (Alam MA).
Abstract
Drying is important for long term storage, maintaining quality and reducing drying loss of rough rice. Solar bubble (SB) dryer was tested at the Department of Farm Power & Machinery, Bangladesh Agricultural University, Mymensingh during Boro and Aman 2015 harvesting seasons to understand the effectiveness and potentiality of the dryer at farmers’ level as an alternative to open sun drying. SB experiment shows that the temperature was distributed uniformly throughout the dryer which was very much dependent on solar radiation. The hourly moisture removal rate was 0.6 and 0.4 % during Boro and Aman season, respectively. The drying efficiency was found 25.2 and 12.3% during Boro and Aman season, respectively. The milling recovery was found 71.5±1.0% for SB dryer and 72.3±1.3% for sundried rough rice. Head rice yield of rough rice was lower (53.6%) in SB dried product compared to sun drying method (63.9%). The germination rate was more than 80% in both seasons for SB dryer and sundried method, respectively. The operating cost of drying was observed Tk. 1.48 per kg. The SB dryer can be applicable for drying rough rice at farm level in Bangladesh.

Key Words: Solar bubble dryer, Drying rate, Drying efficiency and Rough rice
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MLA
Alam, et al. “Experimental investigation of solar bubble dryer for rough rice drying in Bangladesh”. Journal of Bioscience and Agriculture Research, 23(02), (2020):1920-1930.
 
APA
Alam, M. A., Saha, C. K., Alam, M. M., Manir, M. R., Hasan, M. and Rashid, M. M. (2020). Experimental investigation of solar bubble dryer for rough rice drying in Bangladesh. Journal of Bioscience and Agriculture Research, 23(02), 1920-1930.
 
Chicago
Alam, M. A., Saha, C. K., Alam, M. M., Manir, M. R., Hasan, M. and Rashid, M. M. “Experimental investigation of solar bubble dryer for rough rice drying in Bangladesh”. Journal of Bioscience and Agriculture Research, 23(02), (2020):1920-1930.
 
Harvard
Alam, M. A., Saha, C. K., Alam, M. M., Manir, M. R., Hasan, M. and Rashid, M. M. 2020. Experimental investigation of solar bubble dryer for rough rice drying in Bangladesh. Journal of Bioscience and Agriculture Research, 23(02), pp. 1920-1930.
 
Vancouver
Alam, MA, Saha, CK, Alam, MM, Manir, MR, Hasan, M, Rashid, MM. Experimental investigation of solar bubble dryer for rough rice drying in Bangladesh. Journal of Bioscience and Agriculture Research. 2020 March 23(02), 1920-1930
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© 2020 The Authors. This article is freely available for anyone to read, share, download, print, permitted for unrestricted use and build upon, provided that the original author(s) and publisher are given due credit. All Published articles are distributed under the Creative Commons Attribution 4.0 International License.
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