Design and Usage of Paddy Drying and Storage Facilities (V)

Increment of Ability with Usage of Pre-drying and Finishing drying

Abstract

The counterplans of the country elevator to the case of increase of the received paddy in the future were considered. The country elevator at Omi-Hachiman city in Shiga pref. (3000 ton of capacity) was chosen for the research. These counterplans can also be applied when the new facility is designed in order to restrain the scale as small as possible. The base of these counterplans is the method of half drying storage mentioned in the previous report. The enlargement of temporary storage tanks and grain silos is necessary with only the application of method of half drying storage because much temporary storage generates. And so the introduction of the pre-drying of high moisture paddy at receiving time and the finishing drying by the head dryers was considered. As the result, it became clear that when the received amount is below 4500 ton, the temporary storage paddy does not generate owing to the pre-drying, and the amount of half drying storage paddy in the grain silos is restrained in low level owing to the finishing drying. As for this facility, when the pre-dryer is introduced and the interstice silos are used effectively, the received amount less than 4500 ton is possible to be dealt without the extension of silo. Though in case of this method, it is necessary to classify the paddy precisely according to the moisture content, this problem has been able to be settled by the development of accurate automatic moisture meter. In case that this method is applied in some region, it is possible to calculate the ability of the facility easily with the receiving pattern of paddy and the using conditions of the head dryers.