Development of a rough rice handling equipment for in-bin drying and storage system
1988
Chang, D.I. (Chungnam National Univ., Taejon (Korea R.). Coll. of Agriculture)
The objective of this study is to develop a grain handling system for loading, unloading and transporting of rough rice stored at the in-bin drying and storage (IBDS)developed by the Korea Advanced Institute of the Science and Technology (KAIST). A mechanized grain handling system consisted of a portable auger and a gate was developed and tested. The loading capacity of the handling system developed is 16.2 m** (3)/h (8.3 ton/h) for the Indica type rice and 13.0 m** (3)/h (7.0 ton/h) for the Japonica type. It is greater than that of manual handling as much as 2.5-2.7 times. The unloading capacity of the handling system developed is 16.0 m** (3)/h (8.2 ton /h) for the Indica type rice and 12.6 m** (3) (7.0 ton/h) for the Japonica type. It is greater than that of the manual as much as 4.7-5.5 times. For 3-ton capacity of the storage, the loading and unloading can be performed for 20 and 30 minutes by one man operation of equipment, while 60 and 120 minutes for the manual of 2 men, respectively. The volumetric efficiency of the system developed is 0.42-0.54 and the power efficiency is 4.0-4.4. The break-even quantity of the handling system developed is about 38.6 ton (68.7 m** (3)) of rough rice and the initial investment for the system would be returned within five years for the most owners of the KAIST IBDS system
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