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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/4163


    Title: Heavy water enrichment in wired concentric-tube thermal-diffusion columns with transverse sampling streams
    Authors: Yeh, Ho-ming
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: Natural convection;Numerical analysis;Thermal diffusion;Tubes (components);Thermal diffusion columns;Heavy water;column separation;convection;heavy water;inclination;thermal diffusion
    Date: 2001-09
    Issue Date: 2013-03-12 11:20:46 (UTC+8)
    Publisher: Amsterdam: Elsevier BV
    Abstract: 本文探討捆線傾角對兩端進出料型捆線熱擴散塔提煉重水之影響,並推導出最佳傾角之計算公式。結果發現:若以最佳傾角之捆線環繞於同心套管熱擴散中,可適度減弱對流強度而抑制再混合效應,進而提高分離度。 The equations which may be employed to predict the optimum wire angles of inclination for enrichment of heavy water in a concentric-tube thermal-diffusion column with a tight fitting wire spiral, having a diameter equal to the annular spacing, wrapped on the entire inner tube, operating with transverse sampling streams, have been derived. Considerable improvement stead of the absence of wire spiral, so that the convection strength can be properly reduced and controlled, resulting in suppressing the undesirable remixing effect while still preserving the desirable cascading effect. Accordingly, essential savings in fixed charges and operating expense can be achieved, particularly for lower production rate operations or for smaller degree of separation.
    Relation: Journal of the Chinese Institute of Chemical Engineers 32(5), pp.453-459
    Appears in Collections:[化學工程與材料工程學系暨研究所] 期刊論文

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