Hydrogen/carbon monoxide syngas burning rates measurements in high-pressure quiescent and turbulent environment

C. C. Liu, S. S. Shy, C. W. Chiu, M. W. Peng, H. J. Chung

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Abstract

A high-pressure, double-chamber, fan-stirred, large-scale explosion facility is proposed for measurements of laminar and turbulent burning velocities, SL and ST, of centrally-ignited hydrogen and carbon monoxide syngas/air mixtures over an initial pressure range of p = 0.1-1.0 MPa. Results show that lean syngas laminar flames at elevated pressure are highly unstable resulting in cellular structures all over the expanding flame front surface, where SL∼p-0.15 having a relatively modest decrease with pressure as compared to lean methane flames where SL∼p-0.50. Contrarily, as to lean syngas turbulent flames, values of ST increase with increasing pressure (ST∼p0.15) at a fixed r.m.s. turbulent fluctuating velocity (u′ ≈ 1.4 m/s). Moreover, it is also shown that increasing u′/SL is still a way much more effective in increasing values of ST/SL than increasing pressure. Finally, discussions are offered and area for further studies identified.

Original languageEnglish
Pages (from-to)8595-8603
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume36
Issue number14
DOIs
StatePublished - Jul 2011

Keywords

  • Cellular structures
  • Double-chamber fan-stirred explosion facility
  • High-pressure lean premixed turublent combustion
  • Hydrogen/carbon monoxide syngas
  • Laminar and turbulent burning velocities

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