Experimental investigation of premixed combustion limits of hydrogen and methane additives in ammonia

Guang Tang, Pengfei Jin, Yulei Bao, Wai Siong Chai, Lei Zhou

Research output: Journal PublicationArticlepeer-review

71 Citations (Scopus)


In this study, a specially designed premixed combustion chamber system for ammonia-hydrogen and methane-air laminar premixed flames is introduced and the combustion limits of ammonia-hydrogen and methane-air flames are explored. The measurements obtained the blow-out limits (mixed methane: 400–700 mL/min, mixed hydrogen: 200–700 mL/min), mixing gas lean limit characteristics (mixed methane: 0–82%, mixed hydrogen: 0–37%) and lean/rich combustion characteristics (mixed methane: ϕ = 0.6–1.9, mixed hydrogen: ϕ = 0.9–3.2) of the flames. The results show that the ammonia-hydrogen-air flame has a smaller lower blow-out limit, mixing gas ratio, lean combustion limit and higher rich combustion limit, thereby proving the advantages of hydrogen as an effective additive in the combustion performance of ammonia fuel. In addition, the experiments show that increasing the initial temperature of the premixed gas can expand the lean/rich combustion limits of both the ammonia-hydrogen and ammonia-methane flames.

Original languageEnglish
Pages (from-to)20765-20776
Number of pages12
JournalInternational Journal of Hydrogen Energy
Issue number39
Publication statusPublished - 17 Jun 2021
Externally publishedYes


  • Ammonia
  • Combustion limits
  • Hydrogen
  • Methane
  • Premixed combustion

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology


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