Experimental and numerical study of the laminar burning velocity of NH3/H2/air premixed flames at elevated pressure and temperature
Experimental and numerical study of the laminar burning velocity of NH3/H2/air premixed flames at elevated pressure and temperature
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DOI：
10.1016/j.ijhydene.2022.08.198
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发表时间：
2022-09
影响因子：
7.2
通讯作者：
Bao-zhi Jin;Yong-Feng Deng;G. Li;Hong-meng Li
中科院分区：
文献类型：
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作者：
Bao-zhi Jin;Yong-Feng Deng;G. Li;Hong-meng Li
氨（NH3）是一种无碳燃料，由于其理想的生产和储存系统而显示出巨大的研究前景。测量了不同氢比（XH 2 = 0.1-0.5）、当量比（φ = 0.8-1.3）、初始压力（P= 0.1-0.7 MPa）和初始温度（T= 298-493 K）下NH3/H2/空气火焰的层流燃烧速度的实验数据。NH_3/H_2/空气火焰的层流燃烧速度随氢比和温度的增加而增加，但随压力的增加而减小。最大层流燃烧速度的当量比仅受反应物配比的影响。当XH 2 = 0.3时，最大层流燃烧速度的当量比值在1.1 ~ 1.2之间。分析了4种不同初始条件下NH3/H2/空气火焰的化学反应动力学。富燃（φ > 1）时，NO最大摩尔分数的产生量较小;研究结果为氨作为内燃机替代燃料提供了新的参考。
Ammonia (NH3) is a carbon-free fuel that shows great research prospects due to its ideal production and storage systems. The experimental data of the laminar burning velocity of NH3/H2/air flame at different hydrogen ratios (XH2= 0.1–0.5), equivalent ratios (φ = 0.8–1.3), initial pressures (P= 0.1–0.7 MPa), and initial temperatures (T= 298–493 K) were measured. The laminar burning velocity of the NH3/H2/air flame increased upon increasing the hydrogen ratios and temperature, but it decreased upon increasing the pressure. The equivalent ratio of the maximum laminar burning velocity was only affected by the proportion of reactants. The equivalence ratio value of the maximum laminar burning velocity was between 1.1 and 1.2 whenXH2= 0.3. The chemical reaction kinetics of NH3/H2/air flame under four different initial conditions was analyzed. The less NO maximum mole fraction was produced during rich combustion (φ > 1). The results provide a new reference for ammonia as an alternative fuel for internal combustion engines.