Development of safe hydrogen combustion technology and investigation of its combustion characteristics

在这项研究中，我们开发了一种新型的安全的小型氢气燃烧器，称为旋流喷射燃烧器，它由旋转引导火焰稳定的喷射扩散火焰组成。在喷射火焰熄灭的情况下，旋风射流燃烧器可以安全地稳定氢焰。喷流火焰与中间火焰之间存在一个最低温度区域，影响火焰稳定。最低温度区域的去除对于稳定条件的扩展是必不可少的。因此，环状空气喷嘴被多孔空气喷嘴取代。从而完全消除了最低温度区域，极大地扩大了稳定条件。

In this study, we had developed a new safe small hydrogen combustor, called the cyclone jet combustor, which consists of a jet diffusion flame stabilized by a swirl pilot flame. Hydrogen flames are safely stabilized by the cyclone jet combustor over the blowout condition of jet flame. There exists the minimum temperature region between the jet flame and the middle flame, which affects the flame stabilization. The removal of the minimum temperature region is essential for the expansion of the stable condition. Thus, the annular air jet nozzle was replaced with a multi-port air nozzle. Thereby, the minimum temperature region was completely removed to expand the stable condition extremely.