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	高通量空气隙膜蒸馏系统的实验研究
	田瑞 ; 李嵩 ; 杨晓宏 ; 高虹 ; 闫素英 ; 刘进荣 ; TIAN Rui ; LI Song ; YANG Xiaohong ; GAO Hong ; YAN Suying ; LIU Jinrong
	2010-06-08 ; 2010-06-08
关键词	空气隙膜蒸馏 膜组件 蒸馏通量 air gap membrane distillation membrane module permeation flux TQ028.8
其他题名	Experimental investigation of a high-flux air gap membrane distillation system
中文摘要	该文提出一种高通量的新型膜组件,它采用热液旋转切向湍流入流以冲刷膜面,减小温度和浓度边界层,改善温度和浓度极化,提高传热传质效率,并采用小间隙及膜与冷壁部分接触以减小空气隙的传热传质阻力,从而显著提高蒸馏通量。实验结果表明:最佳切向入流角为30,°膜面接触率为75%~80%。采用这种膜组件的空气隙膜蒸馏系统,当用自来水作为热溶液、间隙为1mm、冷热水温差为65℃时,蒸馏通量可高达120 kg.m-2.h-1,而传统的空气隙膜蒸馏系统(间隙为4mm以上)的最大蒸馏通量仅为28 kg.m-2.h-1。热溶液为15%的浓盐水的蒸馏通量实验也得到类似结果。; A high-flux membrane module was developed for an air gap membrane distillation (AGMD) system using a tangential and rotational turbulent inlet flow of hot feed to wash the membrane surface.The design reduced the temperature and concentration boundary layer thicknesses and improved the temperature and concentration polarization which enhanced the heat and mass transfer efficiencies.The partial contact between the membrane and the cooling plate in the small air gap reduced the heat and mass transfer resistance to significantly increase the permeation flux.Experimental results show that the optimum angle of the inlet turbulent flow is 30° with the optimum partial contact area ratio of 75%-80% to get a permeation flux in the AGMD system of 120 kg·m-2·h1 with a 1 mm gap and a temperature difference of 65℃ between the hot and cold tap water.The maximum permeation flux is only 28 kg·m-2·h-1 for a conventional AGMD system with gaps larger than 4 mm.Experiments using salt water with a 15% salt mass fraction show similar results.; 国家自然科学基金资助项目(50376022)
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/51035]
专题	清华大学
推荐引用方式 GB/T 7714	田瑞,李嵩,杨晓宏,等. 高通量空气隙膜蒸馏系统的实验研究[J],2010, 2010.
APA	田瑞.,李嵩.,杨晓宏.,高虹.,闫素英.,...&LIU Jinrong.(2010).高通量空气隙膜蒸馏系统的实验研究..
MLA	田瑞,et al."高通量空气隙膜蒸馏系统的实验研究".(2010).

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