| 种子干燥过程中收缩特性和复水特性的试验研究 |
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| 引用本文： | 蔡亮,施明恒.种子干燥过程中收缩特性和复水特性的试验研究[J].东南大学学报,2003,19(4):343-346. |
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| 作者姓名： | 蔡亮 施明恒 |
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| 作者单位： | 东南大学动力工程系，南京210096 |
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| 基金项目： | TheNationalKeyFundamentalResearchProgram(G2 0 0 0 0 2 63 0 3 ) |
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| 摘 要： | 生物材料干燥过程中会发生收缩现象．本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．
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| 关 键 词： | 收缩特性 复水特性 豌豆 干燥过程 |
Experimental study on shrinkage and rehydration of seed during drying process |
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| Cai Liang,SHI Mingheng.Experimental study on shrinkage and rehydration of seed during drying process[J].Journal of Southeast University(English Edition),2003,19(4):343-346. |
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| Authors: | Cai Liang SHI Mingheng |
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| Abstract: | Biomaterial will shrink during the drying process. The characteristics of shrinkage and rehydration of fresh peas were studied. Drying curves, shrinkage and rehydration curves of peas without seed coats and whole peas were compared. In addition, different volumetric shrinkage coefficients were obtained and discussed. The results show that seed coats resist moisture movement not only from inside to outside but also from outside to inside during different drying conditions. During a seed's drying process, the drying curve is similar to the shrinkage curve. The higher the heat flux is, the less drying time is needed, and in the meantime, volume would shrink more and more intensively. Dried media will break easily at high heat flux. When we create a drying regime, both drying speed and the quality of dried media should be considered. |
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| Keywords: | drying process shrinkage characteristics rehydration characteristics |
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