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Abstract
All diesel engines produce exhaust carbon particles. These particles are originated from the carbon deposition formed on the internal surfaces of the exhaust system and the engine. Then they may be expelled at high temperature to the atmosphere. Particles diameter larger than 0.58 mm and at temperature 649oC could ignite flammable materials upon contact, so spark arrestor plays critical role in impeding the embers emission as it is a device that arrests the embers and the sparks. The aim of this study is to make theoretical modeling and experimental verification to compare between two new models of diesel engine spark arrestors and a commercial spark arrestor in terms of the collection efficiency and acoustics. The sparks and embers which are produced from combustion sources could lead to fire and explosions as a result of ignition of flammable materials which are exposed to these emissions. There are many sources of combustion that produce embers such as internal combustion engines, wood burning stoves, steel mill, cement plant,.etc, so spark arrestor plays critical role in impeding the embers emission as it is a device that arrests the embers and the sparks. The aim of this study is to make theoretical modeling and experimental verification to compare between two new prototypes of diesel engine spark arrestor and a commercial spark arrestor in terms of collection efficiency, acoustics, pressure drop, and cost. COMSOL software using finite element is used to model the collection efficiency while SIDLAB using two port theory is used to model the acoustic characteristics. The two new prototypes A and B were manufactured and tested to verify experimentally the theoretical modeling through the different test rigs. Three different flow rates were selected for the experimental verifications