Experimental investigation on combustion and emission characteristics of non-premixed ammonia/hydrogen flame

• DOI: 10.1016/j.ijhydene.2024.02.281
• Publication Date: 2024-02-28T21:16:13Z
• Authors: Fangyu Zhang; Gengxin Zhang; Zhongcheng Wang; Dawei Wu; Mehdi Jangi; Hongming Xu
• Keywords: Nitrous oxide; Stoichiometry

The use of ammonia and hydrogen as fuels to decarbonise the heavy transport industry has attracted worldwide attention. In this work, a swirl-enhanced combustion test rig been built investigate emission characteristics non-premixed ammonia/hydrogen flames. blowoff limits were first examined ensure that range stable flames could be achieved. Emissions containing nitric oxide (NO), nitrous (NO2), slip (NH3) unburnt (H2) then measured with variety global equivalence ratios, blending inlet gas temperature, swirl numbers chamber insulation conditions. structure relationship between excited hydroxyl radicals (OH*) NO revealed using OH* chemiluminescence profiles. achieved when ratio was greater than 20%. optimal performance under stoichiometric conditions, determined by efficiency. conditions combustor wall played key role in results, significant growth NO2 well reduction found. Although lower number improved flame stability range, increases emissions observed.