种子干燥过程中收缩特性和复水特性的试验研究(英文)

• 作 者: 蔡亮 施明恒
• 机 构: 东南大学动力工程系,东南大学动力工程系 南京210096,南京210096
• 出 处: Journal of Southeast University(English Edition)
• 发表日期: 2003年04期
• 关键词: 种子干燥 复水 收缩特性 干燥过程 干燥曲线 收缩曲线 热流密度 体积收缩 干燥速度 生物材料

生物材料干燥过程中会发生收缩现象 .本文对新鲜豌豆的收缩特性和复水特性进行了研究 .比较了种皮对干燥曲线、收缩曲线、复水曲线和体积收缩系数的影响 .研究表明 ,种皮不仅阻碍湿分由内向外运动也阻碍湿分由外向内运动 .种子干燥过程中 ,干燥曲线与收缩曲线形状相似 .热流密度越大 ,干燥速度越快 ,种子收缩也越快 ,同时种子也越容易破裂 .在制作干燥方案时 ,考虑干燥速度的同时必须考虑种子的质量

Shrinkage phenomenon occurs during the drying process of biomaterials.In this paper, the shrinkage characteristics and rehydration characteristics of fresh peas were studied.The effects of seed coat on drying curve, shrinkage curve, rehydration curve and volumetric shrinkage coefficient were compared.The results showed that species The skin not only hinder the movement of moisture from the inside to the outside but also obstruct the movement of moisture from the outside to the inside.When the seed is drying, the drying curve is similar to the shape of the shrinkage curve.The larger the heat flux, the faster the drying speed, the faster the seeds shrink, The more likely to rupture in the production of drying programs, taking into account the drying speed must also consider the quality of the seeds