Modelling of heat and moisture transfer in desiccant packed bed utilizing spherical particles of clay impregnated with CaCl2
Modelling of heat and moisture transfer in desiccant packed bed utilizing spherical particles of clay impregnated with CaCl2
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DOI：
10.1016/j.applthermaleng.2014.02.031
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发表时间：
2014-05
影响因子：
6.4
通讯作者：
A. Ramzy;Waleed M. Elawady;Hossam AbdelMeguid
中科院分区：
文献类型：
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作者：
A. Ramzy;Waleed M. Elawady;Hossam AbdelMeguid
用CaCl2（粘土+ CaCl2）浸渍粘土颗粒的干燥剂填充床在不同的应用中用于空气除湿。针对这类床层，建立了热湿传递的三种数学模型：等温，绝热和绝热扩散。采用有限差分法对模型进行数值求解。为了检验所建立模型的准确性，将数值结果与现有的实验数据进行了比较。确定了粘土+ cacl2颗粒的扩散系数。此外，还研究了吸湿比对床层运行的影响。
Desiccant packed beds of clay particles impregnated with CaCl2(clay + CaCl2) are employed for air dehumidification in different applications. For such beds, three mathematical models are developed for heat and moisture transfer, namely; isothermal, adiabatic and adiabatic diffusion. The models are solved numerically by finite difference method. In order to examine the accuracy of the developed models, the numerical results are compared with the available experimental data. The diffusivity of clay + CaCl2particles is identified. In addition, the effect of the absorbent ratio on the bed operation is investigated numerically.