Next Article in Journal
Dynamic Simulation and Exergo-Economic Optimization of a Hybrid Solar–Geothermal Cogeneration Plant
Previous Article in Journal
Second Generation Ethanol Production from Brewers’ Spent Grain
Article Menu

Export Article

Open AccessArticle
Energies 2015, 8(4), 2587-2605; doi:10.3390/en8042587

Effects of Electric Fields on the Combustion Characteristics of Lean Burn Methane-Air Mixtures

1
Institute of Internal Combustion Engine, Xi'an Jiaotong University, Xi'an 710049, China
2
Key Laboratory of Shaanxi Province for Industrial Automation, Shaanxi University of Technology, Hanzhong 723001, China
*
Author to whom correspondence should be addressed.
Academic Editor: Thomas E. Amidon
Received: 18 January 2015 / Revised: 8 March 2015 / Accepted: 24 March 2015 / Published: 31 March 2015
View Full-Text   |   Download PDF [1626 KB, uploaded 31 March 2015]   |  

Abstract

In this work, the effects of the electric fields on the flame propagation and combustion characteristics of lean premixed methane–air mixtures were experimentally investigated in a constant volume chamber. Results show that the flame front is remarkably stretched by the applied electric field, the stretched flame propagation velocity and the average flame propagation velocity are all accelerated significantly as the input voltage increases. This indicates that the applied electric field can augment the stretch in flame, and the result is more obvious for leaner mixture. According to the analyses of the combustion pressure variation and the heat release rate, the peak combustion pressure Pmax increases and its appearance time tp is advanced with the increase of the input voltage. For the mixture of λ = 1.6 at the input voltage of −12 kV, Pmax increases by almost 12.3%, and tp is advanced by almost 31.4%, compared to the case of without electric fields. In addition, the normalized mass burning rate and the accumulated mass fraction burned are all enhanced substantially, and the flame development duration and the rapid burning duration are remarkably reduced with the increase of the input voltage, and again, the influence of electric field is more profound for leaner mixtures. The results can be explained by the electric field-induced stretch effects on lean burn methane-air mixture. View Full-Text
Keywords: electric field; flame propagation speed; electrically induced stretch; lean burn mixture; combustion pressure; heat release rate electric field; flame propagation speed; electrically induced stretch; lean burn mixture; combustion pressure; heat release rate
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Fang, J.; Wu, X.; Duan, H.; Li, C.; Gao, Z. Effects of Electric Fields on the Combustion Characteristics of Lean Burn Methane-Air Mixtures. Energies 2015, 8, 2587-2605.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top