CFD simulation of direct contact membrane distillation modules with rough surface channels

doi:10.1016/j.egypro.2015.07.634

淡江大學機構典藏 > 工學院 > 化學工程與材料工程學系暨研究所 > 期刊論文 > Item 987654321/106133

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/106133

题名:	CFD simulation of direct contact membrane distillation modules with rough surface channels
作者:	Hsuan Chang;Jian-An Hsu;Cheng-Liang Chang;Chii-Dong Ho
关键词:	Computational fluid dynamics;Membrane distillation;Mass transfer;Heat transfer;Rough surface
日期:	2015-08-01
上传时间:	2016-04-22 13:21:14 (UTC+8)
出版者:	Elsevier
摘要:	Membrane distillation (MD) can utilize low level thermal energy, such as waste heat and solar thermal heat, and holds high potential to replace conventional energetically intensive separation technologies. Two issues related to MD were investigated in this study by computational fluid dynamics (CFD) simulation. First, the trans-membrane mass fluxes are controlled by the heat transfer in the boundary layers adjacent to the membrane, but the applicability of conventional correlations developed for rigid heat exchangers on MD is questionable. Second, reported experimental study has shown that employing fluid channels with rough surface can enhance the performance of MD. However, the internal transfer characteristics of these modules have not been analyzed. This paper presents the results of the 3-D CFD simulation of the direct contact MD (DCMD) modules with and without rough surface channels for desalination. The simulation is comprehensive in that it covers the entire length of the module and takes into account the trans-membrane heat and mass transfer. The model was verified with reported experiment data and the average deviation of mass flux is less than 10%. The simulation results reveal that the thermal entrance effect, which gives very high mass flux and heat transfer coefficient, is significant for the simulated modules. The averaged heat transfer coefficients of the entire module are not close to the predictions from the conventional correlations. Hence, directly applying the conventional correlations of heat transfer coefficients to the MD modules is not appropriate.
關聯:	Energy Procedia 75, pp.3083-3090
DOI:	10.1016/j.egypro.2015.07.634
显示于类别:	[化學工程與材料工程學系暨研究所] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
CFD Simulation of Direct Contact Membrane Distillation Modules with Rough Surface Channels.pdf		1003Kb	Adobe PDF	1	检视/开启
index.html		0Kb	HTML	232	检视/开启

在機構典藏中所有的数据项都受到原著作权保护.

TAIR相关文章

数据加载中.....