Effects of surface resistances on simultaneous heat and mass transfer in porous solids with phase change
Effects of surface resistances on simultaneous heat and mass transfer in porous solids with phase change
复制标题
表面电阻对相变多孔固体同时传热传质的影响
DOI：
10.1016/0017-9310(74)90157-4
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发表时间：
1974
影响因子：
5.2
通讯作者：
Kiyotani Akihiro
中科院分区：
文献类型：
--
作者：
Sugiyama Sachio;Hasatani Masanobu;Nakamura Masaaki;Morishita Tadashi;Kiyotani Akihiro
对常用热风干燥器中多孔固体的干燥机理和干燥速率进行了广泛的分析，并从理论上进行了系统化。然而，利用床层与固体之间的换热系数很大的特点，在沸腾床中干燥湿固体时，发现了干燥过程中内部温度下降的异常现象。这种反常现象在传统的热风干燥器理论中是没有预料到的。在本报告中，作者在沸腾床中干燥了各种含有液体的固体球体，并尝试用我们以前提出的干燥速率的分析方法来分析这种反常现象。
The drying mechanism and the drying rate of porous solids in the usual hot air dryers have been widely analized, and also have been theoretically systematized. However, when the wet solids were dried in a fluidized bed making use of the fact that the heat-transfer coefficients between fluidized bed and solids were remarkably large, such unusual phenomena were found that the inner temperature dropped while drying. Such unusuality has never been expected from conventional theories of hot air dryer.In this report, the authors dried various solid spheres containing liquids in a fluidized bed, and tried to analize such unusual phenomena with application of the analytical method of drying rate previously presented by us.