Development of techniques for storing rough rice in cold regions (Part 1) -Storage of rough rice at country elevator with natural heat radiation in winter-
Development of techniques for storing rough rice in cold regions (Part 1) -Storage of rough rice at country elevator with natural heat radiation in winter-
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寒冷地区储藏糙米技术的开发（第1部分）～冬季利用自然热辐射的乡村电梯储藏糙米～
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
K. Takekura
中科院分区：
文献类型：
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作者：
K. Takekura
在北海道的一个乡村升降机中，从11月到7月，在一个筒仓中储存了361公吨的糙米，进行了一项农场实验，以开发寒冷地区储藏糙米的新技术。在冬季自然热辐射作用下，靠近筒仓内壁的稻谷温度降至冰点（-5·℃）以下，而筒仓中心稻谷温度基本保持在储藏初期的温度（5·℃）。筒仓上部空间的通风可防止储存期间水分在筒仓内表面凝结。在夏季冷稻谷出筒仓时，采用不加热的强制通风干燥机将稻谷温度提高到周围空气的露点温度以上。在卸载和复温过程中，由于空气中的水分凝结在谷物上，稻谷的水分含量增加。但是，谷壳首先吸收了冷凝物，然后水分慢慢渗透到糙米仁中。因此，复温过程并没有造成糙米出现任何裂缝。实验结果表明，稻谷上的结露不会引起任何问题。【关键词】寒冷气候，稻谷储藏，超低温储藏，乡村提升机，筒仓，粮温，水分，裂缝，复温过程
An on-farm experiment in which 361 metric tons of rough rice was stored in a silo from November until July was conducted at a country elevator in Hokkaido to develop new techniques for storing rough rice in cold regions. The temperature of the rough rice near the inner silo wall decreased to below ice point (-5•Ž) due to natural heat radiation in winter, which the temperature of the rough rice in the center of the silo was maintained at almost the same temperature as that at the beginning of storage (5•Ž). Ventilation in the upper vacant space of the silo prevented moisture condensation on the inside surface of the silo during storage. When the cold rough rice was unloaded from the silo in summer, an unheated forced-air drier was used to increase the temperature of rough rice to above the dew point temperature of surrounding air. During the unloading and rewarming process, the moisture content of the rough rice increased due to moisture condensation on the grain from the air. However, the husks first absorbed the condensation and then the moisture slowly permeated into the brown rice kernel. Thus the rewarming process didn't cause any fissures in the brown rice. The results of the experiment indicate that condensation on rough rice doesn't give rise to any problems. [Keywords] cold climate, storage of rough rice, super-low-temperature storage, country elevator, silo, grain temperature, moisture content, fissure, rewarming process