Transport phenomena between elliptical hollow fiber membrane tube bank for liquid desiccant air dehumidification

doi:10.3969/j.issn.0438-1157.2014.02.024

CIESC Journal ›› 2014, Vol. 65 ›› Issue (2): 538-543.DOI: 10.3969/j.issn.0438-1157.2014.02.024

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Transport phenomena between elliptical hollow fiber membrane tube bank for liquid desiccant air dehumidification

HUANG Simin¹, GUO Xiaojuan¹, YANG Minlin¹, ZHONG Wenfeng²

1 Key Laboratory of Distributed Energy Systems of Guangdong Province, Dongguan University of Technology, Dongguan 523808, Guangdong, China;
2 School of Electric Power, South China University of Technology, Guangzhou 510640, Guangdong, China

Received:2013-03-28 Revised:2013-10-28 Online:2014-02-05 Published:2014-02-05
Supported by:
supported by the National Natural Science Foundation of China (51276042; 51306038).

用于液体除湿的椭圆中空纤维膜管束管间传递现象

黄斯珉¹, 郭晓娟¹, 杨敏林¹, 钟文锋²

1 东莞理工学院能源与化工系, 广东省分布式能源系统重点实验室, 广东东莞 523808;
2 华南理工大学电力学院, 广东广州 510640

通讯作者: 郭晓娟
基金资助:
国家自然科学基金项目（51276042；51306038）。

Abstract

Abstract: Axial momentum and heat transfer between an elliptical hollow fiber membrane tube bank (EHFMTB) used for liquid desiccant air dehumidification are studied. Two regular arrangements, in-line and staggered, are considered. Two unit cells consisting of two fibers and the fluid flowing longitudinally between the fibers are selected as the calculation domains. The governing equations for the fluid flow and heat transfer between the EHFMTB are established and solved via a boundary-fitted coordinate transformation method. The friction factor and the Nusselt number in the unit cells are obtained. The variation of local Nusselt number along the tube length is analyzed. The effects of pitch-to-diameters, elliptical semiaxis ratios and wall surface conditions on these data are investigated. The results are useful for performance evaluations of the EHFMTB.

Key words: flow, heat transfer, counter-current flow, transport, liquid desiccant air dehumidification, elliptical hollow fiber membrane tube bundle

摘要： 研究了用于液体除湿的椭圆中空纤维膜管束管间纵向动量与热量传递现象。选择了四边形和三角形排列这两种规则排列管束中的两根纤维管和管间流体为研究对象，建立控制管间纵向流体流动与传热过程的偏微分方程，并采用贴体坐标转换法对控制方程进行有限容积离散与求解，获得了计算单元内的阻力系数和Nusselt数，分析了流道内局部Nusselt数的变化特征以及纤维管排布（三角形和四边形排列）、管径比、椭圆半轴比以及壁面边界条件（等壁温或等热通量边界）的影响。研究结果可为用于液体除湿的椭圆中空纤维膜管束的结构设计和性能评价提供基本理论及数据基础。

关键词: 流动, 传热, 逆流, 传递, 液体除湿, 椭圆中空纤维膜管束

CLC Number:

HUANG Simin, GUO Xiaojuan, YANG Minlin, ZHONG Wenfeng. Transport phenomena between elliptical hollow fiber membrane tube bank for liquid desiccant air dehumidification[J]. CIESC Journal, 2014, 65(2): 538-543.

黄斯珉, 郭晓娟, 杨敏林, 钟文锋. 用于液体除湿的椭圆中空纤维膜管束管间传递现象[J]. 化工学报, 2014, 65(2): 538-543.

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Transport phenomena between elliptical hollow fiber membrane tube bank for liquid desiccant air dehumidification

用于液体除湿的椭圆中空纤维膜管束管间传递现象

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