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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/76100

    Title: 應用集光型太陽熱電驅動史特靈引擎之薄膜蒸餾海水淡化技術研發-高效率薄膜蒸餾海水淡化系統之研發(I)
    Other Titles: The Theoretical and Experimental Studies of High Performance Membrane Distillation Systems
    Authors: 何啟東;高思懷;陳逸航
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: 薄膜蒸餾;海水淡化;高效率薄膜蒸餾;ACM套裝軟體;最適化設計
    Date: 2011
    Issue Date: 2012-05-02 09:32:43 (UTC+8)
    Abstract: 太陽能驅動薄膜蒸餾海水淡化系統,係結合太陽能集熱設備與薄膜蒸餾之整合系統,其特點是將太陽能集熱及儲存,再間接輔助予薄膜蒸餾單元使用。太陽能驅動薄膜蒸餾之主要設備包括:(1)太陽能集熱器;(2)儲熱系統;(3)熱交換器;(4)薄膜蒸餾單元;(5)其他附屬設備,如真空幫浦等。本子題先探討單一薄膜蒸餾模組之最適結構設計,並改變不同的薄膜蒸餾單元之各種設計及操作參數,以及降低每單位產水量之能耗。同時引入程序設計軟體Aspen Custom Molder (ACM),進行多個薄膜蒸餾模組間之流程最適化組合之求解。並探討捲式與中空纖維管模組,不同模組間的流程組合,加入真空裝置操作後,尋找最適化之操作條件。最後利用子計劃一的史特靈熱電收集系統與子計畫二的儲熱系統進行熱電整合,提供真空蒸餾的電能和加熱流體的熱能,提高整體系統能源使用。本子計畫的研究目的為:(1)設計與模擬各種薄膜模組群,探討最適化模組系統組合,提高能量的使用效率及提升淡水產量;(2)開發高效率平板型薄膜蒸餾器,並提供在不同操作與設計參數下,淡水產率與能耗之經濟效益;(3)建立聚焦型太陽能電熱整合,開發與設計高效能薄膜蒸餾模組系統。並整合各子計畫的研究成果,完成高效率且兼具自動控制之太陽集熱設備輔助式薄膜蒸餾程序整合系統。
    The solar heat assisted membrane seawater desalination system is constructed of solar collectors and membrane distillation devices for increasing pure water productivity. The advantage of this technically and economically feasible system is designed to use the indirect solar heat to drive membrane distillation process in overcoming the unstable supply of solar radiation from sunrise to sunset. 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 units; (5) other auxiliary equipment such as direct vacuum pump. The membrane distillation systems include three different devices of direct contact membrane distillation (DCMD), Spiral-wound and hollow fiber modules. The study on DCMD firstly discusses the design parameters (flow pattern, channel thickness, aspect ratio, roughness, pitch and modules in parallel or in series) and operating parameters (inlet temperature and flow rate) to obtain the maximum pure water productivity with less energy consumption. Meanwhile, Aspen Custom Molder (ACM) software is introduced in this process design to achieve the optimal design arrangement of membrane distillation configurations. Secondly, the three modules combinations in parallel or in series of flat-plate, spiral-wound and hollow fiber membrane distillation modules with adding vacuum operation are investigated theoretically and experimentally for finding optimal operating conditions. The purposes of this study are (1) to use ACM software in simulating membrane distillation modules in order to obtain optimal operating conditions for the pure water productivity; (2) to design and simulate alternative combinations of three modules to optimize the pure water productivity with both mathematical modeling and experimental studies; (3) to integrate all sub-project fruitful results of this overall research plan and accomplish a high performance on solar energy assisted membrane seawater desalination system.
    Appears in Collections:[Graduate Institute & Department of Chemical and Materials Engineering] Research Paper

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