Safety problem is always a big obstacle for lithium battery marching to large scale application. However, the knowledge on the battery combustion behavior is limited. To investigate the combustion behavior of large scale lithium battery, three 50 Ah Li(Ni(x)Co(y)Mn(z))O2/Li(4)Ti(5)O(12) batteries under different state of charge (SOC) were heated to fire. The flame size variation is depicted to ...

Skeletal reaction models for n-butane and iso-butane combustion are derived from the detailed gas phase chemistry model of USC Mech II through directed relation graph (DRG) and DRG aided sensitivity analysis (DRGASA) methods. The skeletal models generated from various combustion systems, e.g. auto-ignitions versus premixed flames, n-butane versus i-butane, are compared, and analyzed based on th...

This paper presents calculations of a pulverized coal flame and a coal-fired utility boiler with advanced combustion technologies. A combustion model based on an extended Eddy Dissipation Concept (EDC) combined with finite rate chemistry is described and some applications are shown. This model can be regarded as an extension of the previously used Eddy Breakup model (EBU) where infinite fast ch...

Ethylene combustion is studied at elevated pressures on Pd(100) and compared with supported Pd catalysts. Specific rates of CO2 formation were determined on Pd(100), 1 wt% (dPd = 2.5 nm) and 5 wt% (dPd = 4.2 nm) Pd/SiO2 catalysts as a function of the O2/C2H4 ratio over the temperature range 428–473 K. Reaction rates and apparent activation energies on these catalysts are particle size and react...

Highly energetic thermite compounds have potential applications in combustion synthesis of various materials and processes, but they are hard to ignite by conventional means. A new technique for ignition of pure thermite powder in air atmosphere, using localized microwaves, was demonstrated recently. This exothermic zero-oxygen-balanced reaction may occur underwater, but due to the hydrophobic ...

The hydrogen abstraction/acetylene addition (HACA) mechanism has long been viewed as a key route to aromatic ring growth of polycyclic aromatic hydrocarbons (PAHs) in combustion systems. However, doubt has been drawn on the ubiquity of the mechanism by recent electronic structure calculations which predict that the HACA mechanism starting from the naphthyl radical preferentially forms acenaphth...

The benzyl radical (1) is a key intermediate in the combustion and tropospheric oxidation of toluene. Because of its relevance, the reaction of 1 with molecular oxygen was investigated by matrix-isolation IR and EPR spectroscopy as well as computational methods. The primary reaction product of 1 and O2 is the benzylperoxyl radical (2), which exists in several conformers that can easily intercon...

Introduction Diesel soot elimination is a very difficult problem. The catalytic filters seems to be one of the technological alternatives in order to trap and burn the soot, at the exhaust gas temperature. In order to advance in a rational catalyst design, the reaction mechanism must be understood. In spite of this need, and even though there are many papers in the field, detailed studies regar...

sulfur emission from coal combustion presents many environmental problems. the techniques used to reduce the amount of sulfur in coal before combustion, include physical, chemical and biological processes.biological processes based on degradation of sulfur compounds by microorganisms offer many advantages over the conventional physical and chemical processes. the processes are performed under m...

Visual simulation of fire is used as special effects in movies, applications of fire simulation for the training in disaster prevention. In this paper, we propose techniques for simulating fire spread taking into account the various properties of materials, and for an effective visualization of combustion phenomenon. In our simulation method, the flame dynamics is obtained by combining the Navi...