由於指叉型流道(interdigitated flow channel)具備使反應氣體於擴散層內產生強制對流，使得指叉型質子交換膜燃料電池的流道設計擁有較佳的性能，因此本文針對指叉型質子交換膜燃料電池組(interdigitated PEMFC stack)進行數值模擬，並對照實驗及數值模擬之單顆指叉型質子交換膜燃料電池的數據，觀察並探討單顆指叉型質子燃料電池及雙顆指叉型質子交換膜燃料電池組結果之差異，進一步在不同溫度、壓力及體積流率等電池性能與極化曲線數值模擬結果。
本文所模擬之燃料電池組，其陽極以純氫氣為入口燃料，陰極則以空氣為入口燃料；改變五種不同操作溫度、五種不同壓力與五種不同體積流率倍率等，比較單電池的實驗數據及模擬結果並進行探討。電池的溫度與壓力變化會影響電化學反應速率，進而會影響到整個電池組的性能，本文也會針對不同的溫度、壓力及體積流率所得的電池性能加以探討。

According to the previous experimental fact that an interdigitated single PEMFC has a better performance than other flow type single PEMFC, therefore this research is aimed to predict a two-cell stack interdigitated PEMFC via a numerical simulation. Investigation the effects of the cell temperature, the cell operating pressure, the fuel flow rate and the air flow rate are performed. This research can provide design reference for application of interdigitated PEMFC stack.

目錄

目錄………………………………………………… Ⅰ
圖目錄……………………………………………… Ⅳ
摘要………………………………………………… Ⅸ
Abstract.……………………………......................... Ⅹ
符號說明…………………………………………… XI
第一章 緒論……………………………………… 1
1.1 前言…………………………………………… 1
1.2 燃料電池的發展簡介………………………… 2
1.3 質子交換膜燃料電池的原理與應用………… 3
1.4 文獻回顧……………………………………… 6
1.5 研究目的……………………………………… 12
第二章 理論分析………………………………… 18
2.1 基本假設……………………………………… 18
2.2 數學模型…………………………………………………… 18
2.3 質子交換膜燃料電池的構造………………… 18
2.4 燃料電池的效率……………………………… 21
2.5 燃料電池的性能曲線………………………… 23
2.6 統御方程式…………………………………… 24
2.6.1 質量守恆…………………………………… 25
2.6.2 動量守恆…………………………………… 27
2.6.3 能量守恆…………………………………… 28
2.6.4 成份守恆…………………………………… 29
2.6.5 電量守恆…………………………………… 31
2.6.6 質子交換膜內部水含量…………………… 34
第三章 數值方法………………………………… 42
3.1 模型格點測試………………………………… 42
3.2 數值方法……………………………………… 42
3.2.1 通用守恆方程……………………………… 42
3.2.2 SIMPLEC演算法…………………………… 46
3.3 邊界條件……………………………………… 47
3.4 解題流程……………………………………… 52
第四章 結果與討論……………………………… 58
4.1 改變操作壓力對燃料電池的影響…………… 58
4.1.1 改變三種壓力對燃料電池的影響………… 58
4.1.2 改變五種壓力對燃料電池的影響.………… 59
4.2 改變操作溫度對燃料電池的影響…………… 60
4.2.1 固定壓力152kPa、改變三種溫度對燃料電池的影響…………………………………………………… 60
4.2.2 固定壓力101kPa、改變五種溫度對燃料電池的影響…………………………………………………… 61
4.3 改變體積流率對燃料電池的影響…………… 63
4.3.1 等比例之氫氣與空氣體積流率…………… 63
4.3.2 變化不同空氣體積流率對燃料電池的影響 65
第五章 結論與未來展望………………………… 105
5.1 結論…………………………………………… 105
5.2 未來展望……………………………………… 107
參考文獻…………………………………………… 109

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