淡江大學機構典藏:Item 987654321/52324
English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 58196/91757 (63%)
造訪人次 : 13773807      線上人數 : 50
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/52324


    題名: 甲醇微燃料反應器之最佳化設計
    其他題名: Optimal design of microreactors for methanol fuel processing
    作者: 廖裕翔;Liao, Yu-hsiang
    貢獻者: 淡江大學化學工程與材料工程學系碩士班
    張煖;Chang, Hsuan
    關鍵詞: 基因演算法;多目標最佳化;微反應器;燃料處理;Genetic Algorithm;Multiobjective optimization;Microreactor;Fuel Processor
    日期: 2010
    上傳時間: 2010-09-23 17:32:56 (UTC+8)
    摘要: 微技術之發展已促使利用臨場重組產氫之微燃料處理系統,以應用於可攜式燃料電池,成為可行。微燃料處理系統之微裝置的設計直接影響系統之能源利用效率。本論文使用計算流體力學(Computational Fluid Dynamics, CFD)軟體FLUENT,完成板翅型塗佈觸媒甲醇蒸汽重組反應器之模擬。模擬結果所獲熱傳與質傳係數與傳統尺寸關聯式之預測值有相當差異。本論文並應用整合式多目標最佳化(Integrated Optimization System),包括實驗設計法(Design of Experiment, DOE)、CFD模擬、反應表面法(Response Surface Method, RSM)以及基因演算法(Genetic Algorithm, GA)進行最佳化分析。在裝置設計參數部分考慮氫氣產率及壓降之雙目標函數,在操作條件部分則考慮氫氣產率、氫氣產量與出口一氧化碳濃度之三目標函數。裝置設計參數最佳化設計結果顯示,觸媒塗佈厚度對兩個目標函數的影響有清楚之方向性,而通道數目對兩個目標函數而言則較無明確方向性。反應器操作條件之最佳化結果顯示,這些最佳解是由氫氣產量與出口一氧化碳濃度之妥協關係決定,其他兩組目標函數間則較無清楚的妥協關係。
    The development of microtechnology has made possible the micro fuel processing system for in-situ hydrogen supply to portable fuel cells. The design of the micro devices of the micro fuel processing system is crucial to the fuel utilization efficient. In this thesis, the plate-fin catalyst coated microreactor for methanol steam reforming is simulated using Computational Fluid Dynamics (CFD) software FLUENT. The simulation results indicate that the heat and mass transfer coefficients are different from that predicted by the correlations for traditional devices. An integrated optimization scheme, involving design of experiment, computational fluid dynamics simulation, response surface model and genetic algorithm, is further adopted for the multiobjective optimization analysis. For the device design parameters, the objective functions considered are the pressure drop and the hydrogen yield. For the operating conditions, the objective functions considered are the hydrogen yield, the hydrogen production rate and the carbon monoxide concentration in the product. The optimal solutions show clear effects of the catalyst coating thickness on the two objective functions, on the other hand, the effects of the number of channels is unclear. For the operating conditions, the optimal solutions show obvious trade-off relation on the hydrogen production and the carbon monoxide concentration, but not so for the other two pairs of the objective functions.
    顯示於類別:[化學工程與材料工程學系暨研究所] 學位論文

    文件中的檔案:

    檔案 大小格式瀏覽次數
    index.html0KbHTML196檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋