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ISSN:2394-3661 | Crossref DOI | SJIF: 5.138 | PIF: 3.854

International Journal of Engineering and Applied Sciences

(An ISO 9001:2008 Certified Online and Print Journal)

Performance Enhancement of Inclined Bubbling Fluidized Bed Paddy Dryer by Design Modification

( Volume 2 Issue 8,August 2015 ) OPEN ACCESS
Author(s):

Phyu Phyu Thant, P. Mahanta, P.S. Robi

Abstract:

Present paper discusses the bed inclination and passive inserts of dryer on drying of paddy in a bubbling fluidized bed dryer. Paddy was dried in three different inclined positions, viz., vertical bed (0° inclined), 15° and 30° in a bubbling fluidized bed. Experiments were conducted for 0.5 to 2.5 kg batch size with superficial velocities of 1.1 m/s and 1.6 m/s. All the experiments were repeated with and without spirals inserts. Results were obtained for air temperature of 55°C, 60°C and 65°C and air velocities of 1.1 ms-1 and 1.6 ms-1 respectively. Better results in terms of energy consumption and moisture removal rate were observed with bed inclination of 15˚. Use of spirals inside the drying chamber with inclined dryer reduces drying time as well as reduces energy consumption significantly.

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