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Heavy water enrichment by thermal diffusion in the flat-plate frazier scheme with column heights increased at a constant ratio for improved performance

Authors

  • Ching-Chun Hsu,

    1. Energy and Opto-Electronic Materials Research Center, Department of Chemical and Materials Engineering, Tamkang University, Tamsui, Taipei County 251, Taiwan
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  • Ho-Ming Yeh

    Corresponding author
    1. Energy and Opto-Electronic Materials Research Center, Department of Chemical and Materials Engineering, Tamkang University, Tamsui, Taipei County 251, Taiwan
    • Energy and Opto-Electronic Materials Research Center, Department of Chemical and Materials Engineering, Tamkang University, Tamsui, Taipei County 251, Taiwan
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Abstract

This study investigates heavy water enrichment using the Frazier scheme of flat-plate thermal diffusion columns with the column number adjusted and the column heights varied at a constant ratio with the total sum of column heights fixed. The equations for predicting the best number of columns and the best column-height ratio for maximum separation are derived. Considerable improvement in performance is obtainable if the column-height ratio and/or column number in a modified Frazier scheme are properly assigned, instead of using the conventional Frazier scheme of uniform column height with the same total sum of column heights. © 2013 Canadian Society for Chemical Engineering

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