發(fā)布時間：2018-09-19 06:11

【摘要】：根據(jù)氣體的熱力學方程,結(jié)合流體流動的連續(xù)性和動量能量的守恒方程,建立了一種質(zhì)子交換膜燃料電池用亞音速噴射器熱力學模型。從燃料電池的操作條件出發(fā),設(shè)計了引射流體飽和增濕和不增濕兩種對比工況,通過模型計算得到了兩種工況下工作流體標準體積流量與噴嘴喉部直徑、混合室截面直徑的關(guān)系。根據(jù)模型計算結(jié)果設(shè)計了3.5 kW電堆用亞音速噴射器,并通過實驗測試了該噴射器的引射性能。研究表明通過模型指導設(shè)計的噴射器具有良好的引射性能,同時針對水蒸氣對引射系數(shù)的影響提出摩爾回流比的概念,可以更好地評價噴射器在質(zhì)子交換膜燃料電池上的可使用性。
[Abstract]:A thermodynamic model of subsonic ejector for proton exchange membrane fuel cell (PEMFC) was established based on the thermodynamic equation of gas, the continuity of fluid flow and the conservation equation of momentum and energy. The relationship between the standard volume flow rate of the working fluid and the nozzle throat diameter and the cross section diameter of the mixing chamber under two working conditions is studied. A subsonic ejector for 3.5 kW reactor is designed according to the calculation results of the model. The ejection performance of the ejector is tested by experiment. The results show that the ejector designed by the model has good ejection performance. The concept of molar reflux ratio is proposed to evaluate the performance of the injector in PEMFC.
【作者單位】： 中國科學院大連化學物理研究所;中國科學院大學;
【分類號】：TM911.4

【參考文獻】

相關(guān)博士學位論文 前1條

1 楊勇;水蒸氣超音速流動中的非平衡相變與激波效應[D];大連理工大學;2010年

【共引文獻】

相關(guān)期刊論文 前10條

1 陳智勇;倪擂，

本文編號：2249279