【摘要】 平板状土豆干燥过程中的内部传热传质研究李业波，刘登瀛（中国科学院工程热物理研究所北京１０００８０）关键词传热传质，干燥，土豆１引言农产物料干燥是一个复杂的传热传质过程，物料在干燥过程中要发生物理、化学和生物等方面的变化，这些变化都与物料内部的水分分布...更多还原

【Abstract】 The simultaneous heat and mass transfer model was modified to predict the temperature and moisture distribution in slab-shaped potato during drying. The effects of shrinkage and changes of material properties was considered in the program. The shrinkage experiments show that the thickness changes of potato are linearly correlated with moisture content. The temperature profile was measured by inserting thermocouples at different distances of the samples, the moisture profile was measured by 7 rays transmission method. The predicted and experimental moisture profile and temperature profile in the sample provide a satisfactory agreements.更多还原