Traditional technologies of solid fuels incineration account for higher level of pollutant in comparison with incineration of liquid and gas fuels. However the fraction of heat and electric power generated at coal fired thermal power plants will increase and by 2020 will have exceeded 50%. Plasma activation promotes more effective and environmental friendly power coals incineration [1]. Effecti...

This computational study is motivated by recent experiments on large-scale cookoff in a confined annular geometry, where the explosive charge is heated carefully so as to produce, nominally, a uniform radial thermal gradient. In the absence of circumferential asymmetry a circular wave of explosion would traverse the charge from the hot outer boundary to the cold inner boundary. In practice, how...

1. To understand why and how a fire occurs, one needs to look at what is ignited, how it was ignited, and any other factors that may have changed either of these concepts. The three most common ignition sources are lasers, electric cautery equipment, and high intensity light cords. 2. There are four human reactions to fire: disbelief; do nothing; reconsideration of the existence of fire; and ta...

Ignition is the initial stage of burning the materials. Consequent flame spread over the materials, heat release rate, fire spread across the rooms, and other issues for building fires all depend on that. Ignition of cellulose materials is commonly classified as smoldering or glowing ignition (self-heating ignition) and flaming ignition including piloted and spontaneous ignition. Numerous studi...

the paper presents results of experimental studies on the methane and propane ignition process in various volumetric compositions of oxidizers heated to temperatures higher than ignition point of analyzed fuels (htac conditions–high temperature air combustion conditions). the increment of temperature dt and the ignition delay time tig are parameters characterizing the process of ignition under ...

Electric arc furnace (EAF) is one of the largest loads in electric power systems. It is highly time varying and nonlinear. Its reactive power variations cause voltage fluctuations in nearby system which is known as flicker. On the other hand the nonlinear voltage-current characteristic causes strong voltage and current harmonics in EAF. To this end Flexible AC Transmission Systems (FACTS) techn...

The ignition delay times of methane/air mixture diluted by N2 and CO2 were experimentally measured in a chemical shock tube. The experiments were performed over the temperature range of 1300-2100 K, pressure range of 0.1-1.0 MPa, equivalence ratio range of 0.5-2.0 and for the dilution coefficients of 0%, 20% and 50%. The results suggest that a linear relationship exists between the reciprocal o...

Ignition and propagation of a reaction front in a counterflow system of an iso-octane/air stream mixing with an exhaust gas stream is computationally investigated to understand the fundamental characteristics of homogeneous charge compression ignition (HCCI) auto-ignition. Various mixing rates are imposed on the system and the effects of dissipation rates on auto-ignition are studied. Ignition ...

Non-equilibrium plasmas may be used to dissociate reactants into radicals. In turn, these radicals react releasing energy and broadening the radical pool and thereby ignite or aid the ignition of a fuel=air mixture. Using methane as an archetypical fuel, this work studies the kinetic pathways that control homogeneous ignition in the presence of radicals, which were previously formed by external...