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DESIGN AND FABRICATION OF MAIZE CORN-ON-COB TRAY DRYER

DESIGN AND FABRICATION OF MAIZE CORN-ON-COB TRAY DRYER

ABSTRACT

This study was carried out to generate a design data, design and fabricate a maize corn-on-cob tray dryer used by maize farmers. Ripped maize corns with husks were bought from the market and preserved to retained its moisture content, dehusked and thereafter, dried to a given percentage moisture content of 15%. This was done by laboratory dryer. The drying rate data was generated and the high rate of 2.0g/hr was used afterwards to design and fabricate the corn-on-cob dryer. From the results, drying of a sample of maize corn-on-cob by the laboratory dryer took a period of three days and six hours to reach the 15% moisture content (wet basis) needed. A test run was carried out on the fabricated dryer and seventeen hours was used to dry a sample of maize corn-on-cob to the same 15% moisture content. This implies that design data is satisfactory as its application in the fabrication of the dryer resulted in an increased flow rate of air in the dryer thereby increasing the rate of drying at the same drying temperature of 40oC.

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