質子交換膜燃料電池由於其工作溫度較低、高效率、無汙染、低噪音及室溫達到高功率電流密度輸出等優點，近年來被視為下一代動力系統或攜帶式電源的最佳選擇。而流道設計決定反應物與生成物在流場內的流動狀態，因此流場板設計為燃料電池關鍵元件之ㄧ。本研究係以實驗及數值方法來針對質子交換膜燃料電池流道側邊在適當間距下安裝不同排列方式之肋條，探討流場特性及熱、質傳現象對電池性能之影響。並藉由田口參數設計法建構適當的實驗參數配置，以最少的實驗次數來探討相關因子對單電池性能的影響。
本論文首先針對平滑流道之質子交換膜燃料電池，運用田口法決定六個主要操作參數（流動方向、電池溫度、陽極與陰極的加濕溫度，以及陽極與陰極的化學劑量）的最佳組合。然後分別應用三維部分截面及全流道的模型，分析矩形柱體以不同數量及排列方式橫向安裝於流道軸線上對燃料電池性能的影響，並找出較佳性能及適當之壓降。最後針對最佳數量之排列方式的設計，以三個最佳化目標的田口法進行五個主要操作參數（電池溫度、陽極與陰極的加濕溫度，以及陽極與陰極的化學劑量）進行最佳化分析，決定可獲得最大功率與最小壓降的操作參數組合。研究結果顯示，以三個最佳化目標得到最佳參數後，可增加30％功率並減少275％壓降。本文研究的結果可以提供工程師發展最佳化燃料電池性能，以及燃料電池在最佳參數組合條件下，質子交換膜燃料電池內部流場的傳輸現象，作為參考。

The major advantages of proton exchange membrane fuel cell (PEMFC) are low-temperature operation, high efficiency, no emission, low noise, and quick starting to high energy and current density under room temperature. Therefore, they are valued as the best choice in the next generation dynamic system or the portable power source in recent years. The flow field structural design decides the fluid state for reactant and product so it is the key point for fuel cell parts. This thesis is to perform an experimental and numerical study on the adequate cuboid-to-cuboid distance for different ways of cuboids installed in the side of field plates and then to investigate how the flow characteristics and the heat and mass transfer affect the performance of PEM fuel cell. This thesis also builds the disposition of the experimental parameter more completely by the Taguchi method of parameter design, to study how the various factors influence the performance of single PEM fuel cell with the least runs of experiment.
This thesis first uses the Taguchi method to determine the optimal combination of six primary operating parameters (flow orientation, temperature of fuel cell, anode and cathode humidification temperatures, anode, and cathode stoichiometric flow ratios) of a PEM fuel cell for smooth-walled channel. Moreover, a three-dimensional model of a partial cross-section and entire cell is applied to analyze the cell performance of PEM fuel cells using cuboids with various numbers and arrangements transversely inserted at the axis in the channel. The numerical results show the higher performance with reasonable pressure drop. Then, for the best number and arrangement of the cuboids in the channel, the Taguchi methodology for the three-objective parametric optimization is then used in the experiment to determine the optimal combination of five primary operating parameters (temperature of fuel cell, anode and cathode humidification temperatures, anode, and cathode stoichiometric flow ratios) for maximum electrical power and minimum pressure drops. As a result, the three-objective optimizations increase the electrical power by 30% and decrease the pressure drops by 275%. The results of this thesis may be of interest to engineers attempting to develop optimal fuel cell performance and to researchers interested in the transport phenomenon of the internal flow modification corresponding to the optimization condition in PEM fuel cells.

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