Transport Phenomena in a Cross-Flow Hollow Fibre Membrane Bundle Used for Liquid Desiccant Air Dehumidification
Transport Phenomena in a Cross-Flow Hollow Fibre Membrane Bundle Used for Liquid Desiccant Air Dehumidification
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DOI：
10.1177/1420326x12452881
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发表时间：
2013-06
影响因子：
3.6
通讯作者：
Simin Huang;Li-Zhi Zhang;Li-xia Pei
中科院分区：
文献类型：
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作者：
Simin Huang;Li-Zhi Zhang;Li-xia Pei
本文研究了溶液除湿空调用中空纤维膜束中的传质现象。在纤维束中，液体干燥剂溶液在纤维内部流动，并且处理空气流过纤维束;其中空气通过穿过膜的水分渗透而被除湿。本文研究了交叉流中空纤维膜束中的流体流动和耦合传热传质，并考虑了相邻纤维之间的相互作用。两个定期包装的安排：线和交错，被认为是。由于流体流动的周期性以及纤维束上的热质传递，选择同时包括2至3个相邻纤维的两个代表性周期性单位单元作为计算域。在膜中的两个交叉流（溶液和空气）中的流体流动和传热传质的方程，与传热传质方程一起求解。然后计算并实验验证了空气侧和溶液侧的摩擦因数和Nusselt数和舍伍德数。结果进行了比较，从自由表面模型计算的数据。
The transport phenomena in a hollow fibre membrane bundle for liquid desiccant air dehumidification were investigated. In the bundle, the liquid desiccant solution flows inside the fibres and the process air flows across the fibre bundle; where air is dehumidified by moisture permeation through the membrane. This study investigated the fluid flow and conjugate heat and mass transfer in the cross-flow hollow fibre membrane bundle by considering the interactions between the neighbouring fibres. Two regularly packed arrangements: in-line and staggered, were considered. Due to the periodicity of the fluid flow and heat and mass transfer across the bundle, two representative periodic unit cells, which simultaneously include 2 to 3 neighbouring fibres, were selected as the calculation domains. The equations governing the fluid flow and heat and mass transfer in the two cross-flow streams (solution and air) in the membranes, were solved together with the heat and mass diffusion equations. The friction factor and the Nusselt and Sherwood numbers on both the air and the solution sides were then calculated and experimentally validated. The results were compared to those available data calculated from the free surface model.