- 學位論文
探討甲醇-水電漿重組器的電漿反應區潮濕問題對產氫濃度之影響
The Study on Effect of Methanol-Water Plasma Reformer for the Wet Problem to the Reaction Chamber of Plasma with Hydrogen Concentration
摘要
氫氣已被公認為未來最具環保且可永續的再生綠色能源，為了能夠更廣泛的應用氫能，通常都利用重組器來製氫，其雖是解決製氫成本和儲氫問題的方法之ㄧ，但在體積大小、製氫工作溫度和製氫時間上卻有待改善。而本微型甲醇-水電漿重組器的體積小，製氫工作溫度能在100℃以下且開機後20秒內即可穩定的產出氫氣，故能克服一般重組器未能解決的問題。但為了能更有效的提高本重組器產氫濃度，故本研究在電漿反應區入口處裝置篩網器且加工一導角，藉此減低因超音波震盪器較大燃料顆粒進入電漿反應區，而造成電漿產生區積水致電解效能減低，而影響產氫濃度。同時也針對系統提供不同的空氣供應量對產氫濃度做一探討。經實驗結果得知，電漿反應區入口處有裝置篩網器及導角的設計可提高產氫濃度，且隨著系統空氣供應量的提升，產氫濃度有明顯升高的趨勢；但當空氣供應量設定在9LPM(L/min)時，產氫濃度則有減少的現象。而本系統空氣供應量設定在8LPM(L/min)時有較高的產氫濃度。
並列摘要
Hydrogen (H2) is kind of the renewable green energy for forever use. In order to more widely use H2 energy, H2 production method for reformer has been overcome the issues of cost and store. Nevertheless, the volume size, operating temperature and the reaction of cold start time for the reformer are needed to improve. Thus methanol-water plasma reformer was studied in this research with operating temperature below 100℃ and only 20 seconds cold start time. It has overcome the issues from normal reformer that haven’t solved. Therefore, in this study, we install a sieve and makes a chamfering in front of the reaction chamber of plasma to prevent the big fuel particles of ultrasonic oscillator from entering the reaction chamber of plasma. This could avoid the decrease in the efficiency of ionization caused by the moist and the effects on hydrogen concentration. The study also aims to discuss the different air flow rates provided by the system. The result shows that the sieve and the chamfering in front of the reaction chamber of plasma can increase the hydrogen concentration, and with the system of air supply's promotion, producing the tendency that the hydrogen density has elevates obviously. But, when air supply hypothesis at 9LPM(L/min) which produces the hydrogen density to have the reduced phenomenon. Besides, the air flow produces the highest hydrogen concentration at 8LPM(L/min).