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Student Number 91323063
Author Cheng-Ho Yen(顏正和)
Author's Email Address chengho@vip.url.com.tw
Statistics This thesis had been viewed 2258 times. Download 881 times.
Department Mechanical Engineering
Year 2004
Semester 1
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Flow Visualization and Channel Design of Bipolar Plates for a Planar Solid Oxide Fuel Cell
Date of Defense 2004-09-17
Page Count 90
Keyword
  • bipolar plate
  • channel design
  • flow visualization
  • fuel cell
  • planar
  • SOFC
  • solid oxide fuel cell
  • Abstract   Solid oxide fuel cell (SOFC) is a clean energy conversion device. It converts the chemical energy of a fuel directly into the electric energy without combustion. The bipolar plate is a key component of SOFCs. The major function of the bipolar plate is to distribute uniformly the gaseous fuel and air over the active areas and thus increases the efficiency of fuel usage. This thesis simulates experimentally the flow behaviors in the channels of the bipolar plate of a planar SOFC using flow dye visualization. Focuses are on the uniformity of the flow in the channels, measurements of the mean velocity distributions, and effects of flow Reynolds number. The results show that the influence of the distance from the inlet of channels to the middle prominent part between the two inlets of the bipolar plate is insignificant for the flow uniformity in the channels. Two important factors that influence the flow distribution of the channels in the bipolar plate are formed to be the range of fan-shaped area near the inlet and the distance from the outlet of the channels to the final outlet. Moreover, using the guide vanes in the bipolar plate can make the flow distribution of the channels much more uniformly over the electrodes and thus could increase the whole efficiency of fuel cells.
    Table of Content 中文摘要              i
    英文摘要              ii
    致謝             iii
    目錄              iv
    圖目錄              vi
    表目錄              x
    第一章 前言          1
    1.1 動機              1
    1.2 SOFC之運作原理     2
    1.3 電池元件和結構     4
    1.4 問題所在          7
    1.5 解決提案          8
    1.6 論文概要          9
    第二章 文獻回顧         14
    2.1 SOFC之發展歷史     14
    2.2 SOFC之數值模擬分析     15
    2.3 雙極板設計分析     18
    第三章 實驗方法與步驟     21
    3.1 流場觀測設備         21
    3.2 雙極板設計與製作     22
    3.2.1 雙極板設計         22
    3.2.2 雙極板製作         24
    3.3 實驗操作方法         25
    3.4 影像處理方法         27
    3.5 流率測量         27
    3.6 實驗誤差分析         29
    3.6.1 流率量測誤差分析     30
    3.6.2 實驗操作誤差分析     31
    第四章 結果與討論         49
    4.1 不同雙極板之流道流場分佈情形49
    4.2 不同入口幾何形狀之影響     53
    4.3 加入導流板之流場改善情形54
    第五章 結論與未來工作     86
    5.1 結論              86
    5.2 未來工作         87
    參考文獻              88
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    黃鎮江,燃料電池,初版,全華科技圖書股份有限公司,台北市(2003)。
    Advisor
  • Shenqyang (Steven) Shy(施聖洋)
  • Files
  • 91323063.pdf
  • approve in 2 years
    Date of Submission 2004-09-21

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