IGNITION BY ELECTRIC SPARK AND BY LASER-INDUCED SPARK OF ULTRA-LEAN CH4/AIR AND CH4/CO2/AIR MIXTURES AT HIGH PRESSURE

被引：16

作者：

Biet, Joffrey ^{[1
]}

Ndem, Marie ^{[1
]}

Idir, Mahmoud ^{[1
]}

Chaumeix, Nabiha ^{[1
]}

机构：

[1] CNRS, Inst Combust Aerotherm Reactivite, F-45071 Orleans, France

来源：

COMBUSTION SCIENCE AND TECHNOLOGY | 2014年 / 186卷 / 01期

关键词：

Biogas; Electric spark; High pressure; Laser ignition; Lean flammable limit; METHANE-AIR MIXTURES; FLAMMABILITY LIMITS; METHANE/HYDROGEN/AIR MIXTURES; ENERGY; FLAME; PROPANE; PLASMA; GASES;

D O I：

10.1080/00102202.2013.840296

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This study investigates the lean flammable limit (LFL) of CH4/air and CH4/CO2/air mixtures, using two different ignition devices: electrical discharge and laser-induced spark (LIS). The experiments were performed for CH4/air and (0.6 CH4+0.4 CO2)/air mixtures in ultra-lean conditions (0.48 phi 0.67) at different initial pressures (P=100-700kPa) and at an initial temperature of 298K. In these conditions, all observed flames were ascending. The minimum laser pulse energy for ignition (MPE) and the maximum overpressure (MO) were determined. The LFL increases with the initial pressure and with the addition of CO2.

引用

页码：1 / 23

页数：23