The influence of CO2 in biogas flammability limit and laminar burning velocity in spark ignited premix combustion at various pressures

W. Anggono, I. N.G. Wardana, M. Lawes, K. J. Hughes, S. Wahyudi, N. Hamidi, A. Hayakawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

Biogas is an alternative energy source that is sustainable and renewable containing more than 50% CH4 and its biggest impurity or inhibitor is CO2. Demands for replacing fossil fuels require an improved fundamental understanding of its combustion processes. Flammability limits and laminar burning velocities are important characteristics in these processes. Thus, this research focused on the effects of CO2 on biogas flammability limits and laminar burning velocities in spark ignited premixed combustion. Biogas was burned in a spark ignited spherical combustion bomb. Spherically expanding laminar premixed flames, freely propagating from spark ignition in initial, were continuously recorded by a high-speed digital camera. The combustion bomb was filled with biogas-Air mixtures at various pressures, CO2 levels and equivalence ratios (φ) at ambient temperature. The results were also compared to those of the previous study into inhibitorless biogas (methane) at various pressures and equivalence ratios (φ). Either the flammable areas become narrower with increased percentages of carbon dioxide or the pressure become lower. In biogas with 50% CO2 content, there was no biogas flame propagation for any equivalence ratio at reduced pressure (0.5 atm). The results show that the laminar burning velocity at the same equivalence ratio declined in respect with the increased level of CO2. The laminar burning velocities were higher at the same equivalence ratio by reducing the initial pressure.

Original languageEnglish
Title of host publicationSustainable Energy and Advanced Materials
Subtitle of host publicationProceeding of the 4th International Conference and Exhibition on Sustainable Energy and Advanced Materials 2015, ICE-SEAM 2015
Editors Triyono, Ahmad Rivai, Agung Tri Wijayanta
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735413658
DOIs
Publication statusPublished - 2016 Mar 29
Event4th International Conference and Exhibition on Sustainable Energy and Advanced Materials 2015, ICE-SEAM 2015 - Solo, Indonesia
Duration: 2015 Nov 112015 Nov 12

Publication series

NameAIP Conference Proceedings
Volume1717
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other4th International Conference and Exhibition on Sustainable Energy and Advanced Materials 2015, ICE-SEAM 2015
Country/TerritoryIndonesia
CitySolo
Period15/11/1115/11/12

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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