Explosion characteristics of argon/nitrogen diluted natural gas–air mixtures

Explosion behavior of methane–dimethyl ether/air mixtures

“…1. This facility was used previously for the same type of measurement for other gaseous fuels (e.g., natural gas) and detailed information of the experimental details can be found in [29]. In brief, the 20-L explosion spherical vessel consists of an explosion chamber, an electric ignition system, a control unit, a data acquisition system, a release valve, a vacuum pump and an air pump.…”

“…It received particular attention not only because it is a basic physico-chemical property (e.g., reactivity, diffusivity, and exothermicity) of the premixed combustible gases [46], its accurate knowledge is also essential for engine design, modeling of turbulent combustion, and validation of chemical kinetic mechanisms. In addition, the determination of laminar burning velocity is very important for the analysis and calculations used in explosion protection [29].…”

“…As for the theoretical model, the laminar burning velocity depends on p max and dp/dt . The model was also used in our previous study of natural gas-air mixtures [29] and the mathematical expression is given by:…”

Effects of argon/nitrogen dilution on explosion and combustion characteristics of dimethyl ether–air mixtures

“…It has been found that the presence of diluents, e.g., argon (Ar), nitrogen (N 2 ), may affect the laminar burning velocity, flammability range and the flame temperature of both hydrocarbons [32] and hydrogen [33,34] in air. Zhang et al [35] measured the explosion characteristics parameters of argon/nitrogen diluted natural gas (NG)-air mixtures, the behavior of the laminar burning velocity of NG-air between different amount of diluents were analyzed. Zhang et al [29] performed an experimental study on the combustion characteristics of diethyl ether (DEE)-air-N 2 diluent at different initial temperatures, equivalence ratios, and dilution ratios using an outwardly expanding spherically flame and high-speed schlieren photography system.…”

Detonation and deflagration characteristics of p-Xylene/gaseous hydrocarbon fuels/air mixtures

“…The explosion hazard of the fuels mainly depends on the relative ease with which a given mixture can be detonated [11][12][13][14]. For the assessment of detonation hazards, the measurement of dynamic detonation parameters, such as velocity, overpressure, critical energy of direct detonation initiation, which provides important information for the characterization of the explosion properties and the detonation sensitivity.…”