Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 35 for “"PARTICULATE EMISSIONS"”.
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Determination of particulate emissions from confined animal housing
Determining particulate emission from mechanically ventilated confined animal feeding buildings is a challenging undertaking. This is due to the relatively large particle sizes involved, wide size range and difficulties in measurement of the ventilation rate of the building. This study seeks to …
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Measurement and control of particulate emissions from cattle feedlots in Kansas
Emissions of particulate matter (PM) are an increasing concern for large open beef cattle feedlots. Research is needed to develop science-based information on PM emissions and abatement measures for mitigating those emissions. This research was conducted to (1) measure PM concentrations emitted …
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Parameterizing Climate-Relevant Properties of Biofuel and Biomass Particulate Emissions Based on Combustion Conditions
… a larger mass fraction of hygroscopic smoldering emissions; however the mixture's growth was less than the growth of pure smoldering emissions. The optical properties of the mixture were dominated by the soot.
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Creating a low-cost, low-particulate emissions corn cob charcoal grinder for use in Peru
… significantly reduce a user's exposure to the particulate matter responsible for the detrimental health effects. The MIT D-Lab has have developed a method of creating charcoal using agriculture wastes such as bagasse and corncobs. However, it has been found that corncob charcoal produces …
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Ash impacts on gasoline particulate filter performance and service life
… change concerns by reducing greenhouse gas emissions, are causing increased use of gasoline direct-injection (GDI) engines in light-duty vehicles (LDV). Separate new regulations that aim to reduce particulate emissions to address air pollution concerns are taking effect concurrent with …
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Soot formation in direct injection spark ignition engines under cold-idle operating conditions
… engines also emit higher concentrations of particulate matter than conventional port fuel injected engines. In light of evidence linking particulate matter to adverse human health impacts, particulate emissions standards have been strengthened in both the United States and in Europe. A great …
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Combustion emissions from conventional boiler firing coal and tire derived fuel
… Tech Power Plant to measure and compare stack emissions while firing coal alone and coal mixed with shredded tires. The coal-tire mixtures consisted of 10 and 20 percent tire chips. Modified EPA method 5 sampling train was used to determine particulate emissions. CO emissions were determined …
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Reactive based NOx sensor
… has virtually eliminated carbon monoxide and particulate emissions. Sulfur oxide emissions have been eliminate by the use of ultra-low sulfur fuel. Nitrogen oxide (NOx) emissions are still not in line with up-coming EPA regulations. NOx sensors are required for all catalysts being developed …
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Environmental Performance of Copper Slag and Barshot as Abrasives
… rate (of the abrasive- ton/2000ft2; lb/ft2) and particulate emissions (mg/ft2; mg/lb; lb/lb; lb/kg; lb/ton). This would help in evaluating the clean technologies for dry abrasive blasting and would help shipyards to optimize the productivity and minimize the emissions by choosing the best …
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Environmental Performance of Steel Grit and Specialty Sand as Abrasives
… steel plates commonly blasted at shipyards. The emissions were measured using EPA Source Test Method to quantify particulate emissions. Steel Grit was observed to be more productive, less consuming, and more environmentally friendly compared to Specialty Sand. The findings obtained in this study …
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Environmental Performance of Coal Slag and Garnet as Abrasives
… generation rate (ton/2000 ft2; lb/ ft2), (3) particulate emission factors (mg/ft2; mg/lb; lb/lb; lb/kg; lb/ton). In order to achieve the study objectives, an emission test facility was built and necessary equipment and materials were procured. Blasting was performed on rusted steel panels …
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The effect of sulphur in fuel on the performance of automotive catalysts
… conditions and gave rise to increased sulphate particulate emissions. These sulphate emissions could fortunately be reduced by better air/fuel control. However, the introduction of more active catalyst compositions, in particular the use of cerium oxide components on the wash coat, led to bad …
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Development of a micro-dilution tunnel system for in-use, on-board heavy-duty vehicle particulate matter emissions measurement
A novel portable particulate matter measuring system was designed, developed and qualified. The heavy-duty engine Federal Test Procedure (FTP) requires the use of a full-flow tunnel to measure particulate emissions from diesel fueled engines. However, a full-flow tunnel based constant volume …
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Particle and gas combustion in catalytic systems
… This suggests that the 80 per cent reduction in "particulate" emissions which is shown by tests with catalyst-equipped stoves is due to catalytic oxidation of high molecular weight vapors rather than due to particle burnup. Dilute (500 and 250 ppm) acetylene/air mixtures flowing between parallel …
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Pyrolysis oil combustion characteristics and exhaust emissions in a swirl-stabilized flame
… as a baseline fuel for comparison. Gaseous and particulate exhaust emissions have been measured, and the particulate samples studied with scanning electron microscopy (SEM) to investigate morphology and composition. In-situ visualization studies have been performed by employing high speed …
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A theoretical assessment of fuel combustion attributes to enhance the operational envelope of HCCI engines
… producing ultra-low nitrous oxides (NOx) and particulate matter (PM) emissions compared to existing compression ignition (CI) and spark ignition (SI) engines. HCCI engines operate on the principle of having a dilute, premixed charge that reacts and burns volumetrically throughout the cylinder …
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Developing fundamentally based models for autoignition
… engine, highly promising with its low Nox and particulate emissions and high efficiency. However it is difficult to control HCCI autoignition. In general accurate prediction of the autoignition behavior of fuel/air mixtures has been difficult, due to inadequate knowledge of low temperature (< …
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Experimental study of lube oil characteristics in the PCV system and effects on engine oil consumption
… is an important source of hydrocarbon and particulate emissions in modem automobile engines. Great efforts have been made by automotive manufacturers to minimize the impact of oil consumption on engine emissions. Research engineers in the last decade have been trying to study the sources …
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A deterministic model for wear of piston ring and liner and a machine learning-based model for engine oil emissions
… engines, to meet the energy saving and the emissions standards in the new era. Engine emissions and engine durability are two of the most important factors in the development of IC engines. Engine particulate emissions are strongly correlated with the lubricant oil consumption. On the other …
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