颗粒堆积吸附床内三维数值传热计算

3-D NUMERICAL SIMULATION OF THE HEAT TRANSFER IN GRANULE ADSORBER

吸附床内传热过程的分析和计算是吸附式制冷研究的重要基础内容之一。在对颗粒堆积吸附床内传热过程分析的基础上,通过对吸附床内复杂传热过程进行合理简化,建立了吸附床内部三维非稳态无内热源传热数学模型,并以硅胶-水工质对为例进行了求解。计算所得吸附床换热系数数值与根据相关文献中提供的实验数据所推算出的数值十分接近。同时,根据计算结果分析了吸附床内部传热过程,为颗粒堆积吸附床的设计和优化提供了一种简单而有效的理论方法。

Analysis and calculation of the heat transfer in the adsorber is one of important fundamental tasks in the adsorption cooling study field.Based on the analysis of heat transfer process in the granule adsorber,the complicate heat transfer process is simplified.And a 3-D mathematic model of unsteady heat transfer without inner heat source in the given adsorber is built.The model is solved while using silica gel-water as working pairs.The calculated value of the heat transfer coefficient of the adsorber in thi...