Modeling of mass transfer Graetz problems in flat-plate thermal-diffusion columns for heavy water enrichment

doi:10.1016/j.jtice.2010.03.016

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 987654321/55023

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题名:	Modeling of mass transfer Graetz problems in flat-plate thermal-diffusion columns for heavy water enrichment
作者:	Yeh, Ho-ming;Ho, Chii-dong;Wang, Chiung-jeng;Tu,Jr-wei;Guo, Jia-jan
贡献者:	淡江大學化學工程與材料工程學系
关键词:	Mathematical modeling;Separation;Mass transfer;Thermal diffusion;Graetz problems
日期:	2011-01-01
上传时间:	2011-08-09 15:07:55 (UTC+8)
出版者:	Amsterdam: Elsevier BV
摘要:	The mass transfer Graetz problem of flat-plate thermal-diffusion columns for heavy water enrichment was investigated. An orthogonal expansion technique was used to solve the laminar counter-current flat-plate thermal-diffusion column separation problems under flow-rate fraction variations and feed position. The present theoretical predictions for the degree of separation were solved based on the separation variable method. Positive and negative eigen-values are needed for the enriching and stripping sections, respectively, during the calculation procedure. The results show that the degree of separation increases with decreasing the feed flow rate and the maximum degree of separation is obtained for feed positions δ=0.5 and feed concentration CF=0.385. Moreover, the theoretical predictions are in better agreement with the experimental results than those predicted using the transport equation in the previous works.
關聯:	Journal of the Taiwan Institute of Chemical Engineers 42(1), pp.50-57
DOI:	10.1016/j.jtice.2010.03.016
显示于类别:	[化學工程與材料工程學系暨研究所] 期刊論文

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