穀物の冷却乾燥貯蔵に関する研究 (第2報)
ビールムギ堆積層の冷却乾燥貯蔵
1970 年 32 巻 2 号 p. 140-144
詳細
1970 年 32 巻 2 号 p. 140-144
In this experiment, cooling, cold air drying and storage of deep bed baley (NIRASAKI No. 5) were made without interruption.
1. The sample weight was 250kg. In During cooling and drying, the cooling air temperature, the relative humidity and the air flow rate were 10-13°C, 80-85% and 2-3m3/min., respectively. During storage, the daily mean values of air temperatures, relative humidities and flow rates were within the limits of 10-16°C, 70-90% and 0.5-1.0m3/min., respectively.
2. Time required in cooling the grain from 20.5°C to 8°C was 25 hours. The drying time of the grain from 20.5% to 10.5% m. c. was 264 hours (11 days).
3. The inlet air temperature and relative humidity were influeced and changed due to the change of external atmosphere conditions, because of the unsufficient heat insulation of the storage bin and pipes. Therefore, the equilibrium moisture content became dynamical and resulted in inconsitency with the equilibrium moiture content in steady state
4. The storage term was 69 days, during which grain moulds were not detected.
5. In the 69 day storage the grain moisture content decreased 1% and the germination ratio decreased 0.6%.
