燃料電池為目前新興的發電技術，是一種不需經過燃燒反應卻能將化石燃料中化學能釋出而直接轉化成電能的嶄新發電裝置。在不同型式的燃料電池中，質子交換膜燃料電池(PEMFC)的操作溫度最低、無腐蝕性且電流密度高，因此成為近年來研究的重點。質子交換膜燃料電池所使用的燃料為氫氣與氧氣，氧氣可由大氣中直接獲得，而氫氣的來源可由碳氫化合物重組獲得；若以純氫氣直接供應，則有貯存、安全與補給等問題。
　　本實驗以甲醇作為重組製氫燃料，設計製造一長420 mm，內徑44 mm之管型重組器；輔以商用觸媒G66B來進行研究。在進料方面，以超音波振盪方式將液體進料霧化成微小液滴，可得較佳之反應效率，並可省卻加熱蒸發進料所需消耗之能源與熱量；其粒徑大小約為3.2μm。
　　甲醇經由重組反應後可得富含氫氣之氣體，可供給燃料電池發電使用。本實驗以蒸氣重組反應為主，針對不同進料之水對甲醇莫耳比(S/C)、觸媒床反應溫度及攜行氣體(Carrier Gas)流率來觀察重組器性能表現。經由實驗觀察，發現當S/C = 1.8時，氮氣攜行量為8 LPM、觸媒床溫度設置在350 ℃時，甲醇轉化率有最高值，約為98.678 %；而此時氫氣產率約為0.03129 mole/min。

Fuel cell is one of the promising power technology to generate electric power. The chemical energy is transformed to electrical power without combustion. Among all types of fuel cells, the recent research is focused on the Proton Exchange Membrane Fuel Cell (PEMFC) for several advantages：the lowest operating temperature, non-corrosiveness, and high current density. The primary fuels of PEMFC are hydrogen and oxygen. Oxygen could be obtained directly from the atmosphere while hydrogen can be reformed from hydrocarbon since storage, safety and supply problem could arise with directly pure hydrogen supply.
In this research, a channel with a 420mm length and 44mm diameter has been designed and connected to a G66B catalytic section for Hydrogen- reforming purpose. Methanol been taken to be fuels and, with utilization of ultrasonic atomizing technique, fuel drops around 3.2 in diameter could be generated for the purpose of better reaction efficiency and reduction of energy required for fuel evaporation.
Through the reforming process, a methanol gas could be converted into a hydrogen-rich gas and therefore becomes capable of power generating. The whole research focuses on investigation of the performance of steam reforming processes under different S/C ratios and flow rates of carrier gas. It has been discovered that the optimal conversion rate occurs under a 1.8-S/C-ratio, a 8LPM－carrier gas flow rate, and a 550°C－catalyzing bed－temperature. The value’s around 98.678﹪at this point and the rate of hydrogen generation’s around 0.03129 mole/min.

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