直接甲醇燃料電池堆甲醇進料即時濃度之評估方法

A method for real-time estimating the methanol concentration of a direct methanol fuel cell stack

徐一中(Yi-Chung Hsu)

指導教授 ： 余子隆

元智大學/工程學院/化學工程與材料科學學系/碩士(2012年)

摘要

本論文提供直接甲醇燃料電池系統一個新的甲醇濃度感測方法。利用直接甲醇燃料電池中甲醇穿透特性與濃度間之遞增關係以及操作中斷活化程序，不僅可以得到直接甲醇燃料電池系統運作時各參數之間的交互關係自行提供濃度判斷值，並利用得到的濃度判斷值即時對系統甲醇濃度進行微調至期望濃度值。利用此即時評估甲醇濃度的方法可減少微型化直接甲醇燃料電池的體積、功耗以及低成本。對於直接甲醇燃料系統的甲醇濃度控制更便利。也使得直接甲醇燃料系統中的熱管理以及回收水管理能得到更穩定的控制因子。

關鍵字

直接甲醇燃料電池 ； 甲醇濃度評估 ； 甲醇穿透

並列摘要

The present study proposes a new method for real time estimating the methanol concentration of a direct methanol fuel cell stack. Using the relations of the methanol crossover quantity with the methanol concentration of the input fuel and with the activation parameters of a fuel cell stack when operating in an interrupt mode, we establish the relationship of the fuel methanol concentration with the interrupt mode activation parameters of a fuel cell stack. With these relationships, we can real-time estimate the fuel methanol concentration and thus control the input fuel methanol concentration. By using this sensor-less methanol fuel control system, we are thus able to reduce the system volume, fuel consumption, and design cost of a micro-fuel cell system. We also expect that the simple and precise methanol feeding control system could allow us to have stable parameters for the thermal and water managements.

並列關鍵字

direct methanol fuel cell ； methanol concentration estimation ； methanol crossover

參考文獻

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