Experimental Evaluation of a Batch Hot Air Fluidized Bed Dryer
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2013, Vol 3, Issue 1
Abstract
Abstract: The experimental evaluation of a batch hot air fluidized bed dryer for cassava particles is presented. The test rig of fluidized bed dryer consists of a vertical column 400mm diameter with a physical height of 2960mm, a regulated centrifugal blower powered by a 1.5 Hp electric motor, and an air heater with a thermostat for selection of drying temperature of the fluidizing medium. A bed of 1.555kg casssva particles were fluidized at three different air flow rates: 043 kg/s, 0.05 kg/s and 0.056 kg/s in succession. The drying temperatures considered are at an interval of 20 oC. The minimum drying temperature is 60 oC and the maximum temperature of160 oC. The resident drying time for cassava particles in the dryer was found to decrease with increase in drying temperature. The heat source for drying came solely from the heated fluidizing air. It was also observed that the drying rate decreases with increase in air flow rate while it increases with drying temperature.
Authors and Affiliations
Oluwaleye. I. O.
Keywords
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