کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
691822 1460452 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling of mass transfer Graetz problems in flat-plate thermal-diffusion columns for heavy water enrichment
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Modeling of mass transfer Graetz problems in flat-plate thermal-diffusion columns for heavy water enrichment
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Taiwan Institute of Chemical Engineers - Volume 42, Issue 1, January 2011, Pages 50–57
نویسندگان
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