摘要
在顺流通风条件下厚层糙米的微波干燥实验结果表明 :增加微波功率 ,糙米的温度和干燥速度也会随之增加 ,但是糙米的爆腰率也会随之上升。当微波的功率控制在 0 0 5～0 0 9kW /kg范围内 ,风速控制在 0 12～ 0 2 0m/s范围内 ,可以减少爆腰率、降低发芽率等质量问题。在此条件下 ,糙米的有效干燥厚度大约为 0 130m ,此值大于同等条件下稻谷的有效干燥厚度。因此 。
Experimental study on microwave drying of thick layer brown rice with concurrent flow ventilation was carried out.The results show that with the increase of microwave radiation power level,the grain temperature,drying rate increased,but the fissuring ratio also increased.If microwave power is controlled at 0.05～0.09kW/kg,and superficial air velocity at 0.12～0.20m/s,the quality of the products could not be affected seriously.The effective drying thickness of brown rice layer is about 0.13m under this drying condition.It was a little larger than that of microwave drying of thick layer rough rice.For this sake,the efficiency for microwave drying of brown rice could be higher than of rough rice.
出处
《粮食储藏》
2003年第1期21-31,共11页
Grain Storage
关键词
顺流通风
糙米
厚层微波干燥
粮食储藏技术
brown rice,thick layer,microwave,drying,concurrent flow ventilation
