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Deflagration Characteristics of N 2 -Diluted CH 4 -N 2 O Mixtures in the Course of the Incipient Stage of Flame Propagation

Author

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  • Maria Mitu

    (“Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Spl. Independentei, 060021 Bucharest, Romania)

  • Codina Movileanu

    (“Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Spl. Independentei, 060021 Bucharest, Romania)

  • Venera Giurcan

    (“Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Spl. Independentei, 060021 Bucharest, Romania)

Abstract

In this study, experimental measurements in a spherical combustion bomb were performed in order to investigate the flame propagation in N 2 -diluted CH 4 -N 2 O mixtures with stoichiometric equivalence ratio, at several initial pressures (0.5–1.75 bar) and ambient initial temperatures. Methane was chosen as a test-fuel, since it is the main component of natural gas, a fuel often used as a substitute to gasoline in engines with internal combustion and industrial plants. The method approached in this study is based on a simple examination of the cubic law of pressure rise during the early (incipient) period of flame propagation. The incipient stage defined by a pressure rise equal or smaller than the initial pressure, was divided into short time intervals. The burnt mass fractions (obtained using three different Equations) and flame radii at various moments of the flame propagation in the course of the incipient stage were calculated. The cubic law coefficients and corresponding laminar burning velocities at considered time intervals were also reported.

Suggested Citation

  • Maria Mitu & Codina Movileanu & Venera Giurcan, 2021. "Deflagration Characteristics of N 2 -Diluted CH 4 -N 2 O Mixtures in the Course of the Incipient Stage of Flame Propagation," Energies, MDPI, vol. 14(18), pages 1-16, September.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:18:p:5918-:d:637984
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    References listed on IDEAS

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    1. Mehra, Roopesh Kumar & Duan, Hao & Juknelevičius, Romualdas & Ma, Fanhua & Li, Junyin, 2017. "Progress in hydrogen enriched compressed natural gas (HCNG) internal combustion engines - A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 80(C), pages 1458-1498.
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