DESIGN AND DEVELOPMENT FOR INCREASE EFFICIENCY OF PADDY SMART DRYER

Abstract

The objective of this research is to design and development paddy drying smart systems for medium rice mill; evaluate the percentage of whole grain ≥3%. The design of dryer sets of production capacity at 50 tons/day and consider of milled rice good qualities. From the paddy drying testing at the condition of the initial moisture of 28% wet basis (w.b.), the drying temperature of 90-100 ^ºC , the hot air speed of 1 m/s and fuel cost of 0.5 tons/hr using rice husk as fuel, fuel price 1,500 Baht/ton. It was found that the qualities of milled rice controlled with the system was 45% and the quality of mill rice without controlled of system was 35%. It was found that the qualities of milled rice with and without controlled of system was 45% and 35% respectively. Paddy drying cost was 0.47 baht/kg, fixed cost for produced dryer 0.11 baht/kg and operating cost 0.36 baht/kg when used dryer 24 h/day. Therefore, the design and development could be increase the efficiency of paddy dryer in medium rice mill.