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    題名: 太陽能驅動式海水淡化系統之設計研發與經濟評估---高效率太陽能集熱設備輔助式薄膜蒸餾程序(II)
    其他題名: The Study on High Performance Solar Energy Assisted Membrane Distillation Processes(II)
    作者: 何啟東;吳容銘
    貢獻者: 淡江大學化學工程與材料工程學系
    關鍵詞: 薄膜蒸餾;海水淡化;高效率太陽能集熱器;高效能儲熱系統;計算流體力學;迴流操作;membrane distillation;seawater desalination;high efficiency solar collectors;high efficiencystorage system;CFD;recycle operation
    日期: 2009
    上傳時間: 2010-04-15 16:08:00 (UTC+8)
    摘要: 太陽能輔助式薄膜蒸餾海水淡化系統是一套節能的系統,係將太陽能集熱設備與薄膜蒸餾系統作 一結合,並利用源源不絕的太陽熱能作為薄膜分離驅動力的來源。太陽能集熱設備之加熱效能容易受 太陽輻射入射量之強度影響,因此為克服太陽能非穩態供應之困難,間接式太陽能驅動薄膜蒸餾為可 行的系統,其特點即是將太陽能透過集熱設備收集並加以儲存,再間接地提供予薄膜蒸餾單元利用, 因薄膜單元是間接地從太陽能集熱設備取得所需之熱能,因此不需清洗太陽能集熱設備,對於降低維 修成本有很大的助益。太陽能輔助式薄膜蒸餾之主要設備包括:(1)太陽能集熱器;(2)儲熱器;(3)熱交 換器;(4)薄膜蒸餾單元,及其他附屬設備。本子計畫的目的為:(1)設計新型平板式太陽能集熱器,利 用數學模擬與實驗分析方法進行研究,並導入迴流操作以增加集熱效率;(2)設計與模擬新型儲熱設 備,以計算流體力學軟體FLUENT 模擬其儲熱效果,將其結果與太陽能集熱器作一結合,以延長薄膜 蒸餾單元的操作時間,增加淡水產量;(3)建立薄膜蒸餾的經驗公式資料庫,並整合與測試各子計畫的 研究成果,完成一套高效率且兼具自動控制系統之太陽集熱設備輔助式薄膜蒸餾程序。 The solar heat assisted membrane seawater desalination system is technically and economically feasible, which is constructed of solar collectors and membrane distillation device for energy saving water purification. The diving force of separation in membrane distillation device is supplied by infinite resources of solar radiation. Owing to the solar radiation is significant parameter on solar collector efficiencies, the indirect solar heat driven membrane distillation system is designed to overcome the unstable supply of solar radiation. There are two advantages of the indirect solar heat driven systems (1) the hot brine is indirectly preheated by the solar heating system such as flat-plate solar water heaters and vacuum tube solar water heaters to prevent equipment fouling; (2) the maintenance costs of solar collectors and hot water storages are low. The solar heat assisted membrane seawater desalination system in the present study is consisted of (1) solar water heaters; (2) hot water storage devices; (3) heat exchangers; (4) membrane distillation devices such as direct contact membrane distillation, air gap membrane distillation and vacuum membrane distillation. The purposes of this study are (1) to design new flat-plate solar water heaters, analysis with mathematical modeling and experimental studies by using recycle operations; (2) to design new hot water storage systems associated with the aid of Computational Fluid Dynamics (CFD) software in simulating solar heating systems in order to extend the operation time of membrane distillation device, and thus, increase the productivity of pure water; (3) to establish the experimental data bank for obtaining correlation equations in the membrane distillation and integrate all sub-project fruitful results of the proposed overall research plan to accomplish a high efficiency and cybernation solar energy assisted membrane seawater desalination system.
    顯示於類別:[化學工程與材料工程學系暨研究所] 研究報告

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