| 摘要 |
PROBLEM TO BE SOLVED: To provide a cracking preventive operation method for a circulating grain dryer for enhancing a cracking preventive effect during drying of grains and performing more efficient drying operation. SOLUTION: The moisture value of cracked grains in a grain sample is measured to make comparison between the measured moisture value and general knowledge that cracking during drying occurs when grain moisture is in a low moisture region. Based on the compared result, whether a harvest field or a drying condition (during drying) is the cause of cracking of cracked grains in the grain sample is thereby presumed. When the drying condition is the cause of cracking, cracking preventive operation is made further safer operation than the case of the harvest field being the cause of cracking, to improve the cracking preventive effect. When the harvest field is the cause of cracking, safe drying operation more than necessary is not performed. Drying does not take time more than necessary, and efficient drying operation is performed. COPYRIGHT: (C)2007,JPO&INPIT
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