Thermodynamic and Hydrodynamic Analysis of Paddy Drying in a Bubbling Fluidized Bed Dryer
Published: 2017
Author(s) Name: Sasmita Mishra, Smrutirekha Mishra, B. P. Mishra |
Author(s) Affiliation: Assist. Prof., Dept. of Mech. Engg., Bhubaneswar Engg. College, Odisha, India.
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Abstract
Experimental investigation of paddy drying using vertical and inclined fluidized bed was carried out, using various inventories, inclinations, and air (passed through the blower, used for drying) temperatures. For the vertical bed, the drying times were found to be 80 min and 70 min for air temperatures 60ºC and 65ºC respectively, which is same for the bed with an inclination of 45º, given the same conditions. The bed with an inclination of 30º has the shortest drying time, i.e., 40 min for 65ºC and 45 min for 60ºC, thereby reducing the moisture content from 62% to 8.5%. 15º and 30º inclined beds consume the least energy due to better heat transfer and hydrodynamics, and less drying time.
Keywords: Drying time, Fluidization, Hydrodynamics, Moisture content, Paddy.
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