1974 年 35 巻 4 号 p. 385-392
This investigation was carried out to find the most suitable drying couditions for the intermittent drying system. The experimented work concerned with the influence of the temperature of the drying air, the rate of flow and of the drying time on the rate of drying. Drying tests were carried out under the conbination of temperaturs. 40, 45, 50, 55, 60, 65, 70, 75, and 80 (°C), airflow 1, 2, 3, and 4(m3/sec-ton), and heating times, 3, 2, 1, 1/2, 1/4, 1/6, and 1/8 (hr) Keeping the intermittent time constant at 3hr.
The results obtained were as follows:
1) The drying rate increases with the increase of the temperature of drying air and the rate of airflow and with the decrease of the heating time, In particalar, the effect of airflow seems to be the greatest.
2) It is sugggested to use shorter heating time because it is more effective to increase the rate of drying and to prevent the drying damage.