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Received July 1, 2016
Accepted November 29, 2016
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Comparative experimental study of ethanol-air premixed laminar combustion characteristics by laser induced spark and electric spark ignition

College of Energy Engineering, Zhejiang University, Hangzhou 310027, China 1College of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018, China
xucangsu@zju.edu.cn
Korean Journal of Chemical Engineering, February 2017, 34(2), 574-579(6), 10.1007/s11814-016-0338-5
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Abstract

An experimental study of laminar combustion characteristics of ethanol-air premixed mixtures was conducted with different ignition methods, including laser induced spark ignition (LISI) and electric spark ignition (SI) at an initial condition of 358 K temperature and 0.1 MPa pressure. Flame propagation with the two different ignition methods was analyzed and discussed. The laminar flame speed was extrapolated with a nonlinear extrapolation method. Results indicate that the laminar speed of ethanol-air mixtures with LISI is faster than that with SI at lean mixtures, but slower at stoichiometric and rich mixtures. The peak values of the laminar burning velocity for SI and LISI with nonlinear extrapolation are 50.1 cm/s and 47.6 cm/s at the equivalence ratio of 1.1, respectively. Laser-induced spark ignition is able to ignite leaner ethanol-air mixtures.

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