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 18 of 18 for “"emission limits"”.
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COMMON MODE VOLTAGE ELIMINATION IN THREE-PHASE FOUR-LEG INVERTERS UTILIZING PULSE DENSITY MODULATION
… requirements in MIL-STD-1399 and the conducted emission limits in MIL-STD-461G are met with the proposed controller, while the grid-following converter supplies a desired current to the load.
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Sviluppo di algoritmi avanzati di analisi e diagnosi combustione in tempo reale per motori endotermici alternativi
Increasingly stringent exhaust emission limits and higher fuel economy are the main drivers of the engine development process. As a consequence, the complexity of the propulsion units and its subsystems increase, due to the extensive use of sensors and actuators needed to obtain a precise control …
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The productive reuse of coal, biomass and co-fired fly ash
Stricter greenhouse gas emission limits and renewable energy requirements are expected to further increase the worldwide practices of firing biomass and co-firing biomass with coal, which are both considered more sustainable energy sources than coal-only combustion. Reuse options for the …
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Air quality impacts and benefits under U.S. policy for air pollution, climate change, and clean energy
Policies that reduce greenhouse gas emissions can also reduce outdoor levels of air pollutants that harm human health by targeting the same emissions sources. However, the design and scale of these policies can affect the distribution and size of air quality impacts, i.e. who gains from pollution …
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Evaluation of wood biomass utilization for the greenhouse industry in British Columbia
… the long-term economic value, the air quality emission, and the long-term resource availability are the main barriers for the industry to convert into wood biomass boiler. The main objectives of this study are, to evaluate the economic feasibility of using wood biomass for the greenhouse …
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Optimal control and model reduction for wave energy systems: A moment-based approach
… of supply, and pressure to honor greenhouse gas emission limits, much attention has turned to renewable energy sources in recent years. Ocean wave energy is a massive and untapped resource, which can make a valuable contribution towards a sustainable, global, energy mix. Despite the fact that …
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Experimental Investigation on Different After-treatment Technologies for the Control of Pollutant Emissions from Automotive Diesel Engines.
… efficiency (lower fuel consumption and CO2 emissions), drivability, durability and reliability. Increasing concerns regarding the two main pollutants from Diesel engines, NOx and PM, started a progressive process of tightening of emission limits; Tier 2 (USA) and Euro5b/6 (Europe) emissions …
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Analisi degli aspetti di qualità nella gestione dei sistemi di drenaggio urbano attraverso modellazione numerica e indagini di campo
… as well, through an integrated immission/emissions phylosophy, in which emission limits are associated with effluent standards, based on the receiving water characteristics and their specific use. For surface waters the objective is that of a “good” ecological and chemical quality status. …
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A Comparison of Solvent and Water-Borne Alkyd Coatings and the History of VOC Regulations in the United States
… gloss, contrast ratio, and durability. The VOC emissions for all three alkyd types were as expected; the solvent borne had the highest emission at 253 g/L, followed by water reducible with 166 g/L, and emulsion with 34 g/L.</p> <p><strong>The History of VOC Regulations in the United States …
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VOC Interference with Standard Diesel Particulate Analysis for Mine Samples: Exploring Sources and Possible Solutions
… (MSHA) enforces personal exposure and engine emission limits. These regulations target just the solid portion of diesel exhaust, known as diesel particulate matter (DPM). The majority of DPM mass is attributed to particulate organic carbon (POC) and elemental carbon (EC). Total carbon (TC) is …
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Ultra Wideband Interference on Third-Generation Wireless Networks
… a very wide bandwidth. In principle, the low emissions mask protects incumbent systems operating in the same spectrum from being interfered with, while the wide bandwidth offers the possibility of high data rates, in excess of 250 Mbps. UWB has been regulated to operate in the 3.1 to 10.6 GHz …
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Analysis of Energy Savings and Feasibility of Retrofitting New York City Midrise Multifamily Buildings with Air Source Heat Pump Technology
… impacts of climate change due to greenhouse gas emissions, many dense urban cites throughout the United States have set into law ambitions decarbonization policies that will require buildings to replace fossil fuel space and water heating systems with electric powered alternatives. In many …
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Čištění spalin odsiřováním
Cílem práce je teoretické zpracování oblasti odsiřování spalin a emisních limitů oxidu siřičitého. Práce je rozdělena do tří částí. První část se zabývá obsahem síry v palivu, vznikem oxidů síry a jejich dopadem na lidské zdraví a životní prostředí. Druhá část je věnována zdrojům emisí, emisní …
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The Origin of Polycyclic Aromatic Hydrocarbons in Diesel Exhaust Emissions
Emission limits for diesel engine exhaust pollutants are being continually reduced in line with increasingly stringent emissions legislation. Essential to the task of reducing diesel exhaust emissions is an understanding of the origin of the exhaust pollutants. This research has investigated the …
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Thermal efficiency and emission analysis of advanced thermodynamic strategies in a multi-cylinder diesel engine utilizing valve-train flexibility
<p>Stringent emission regulations and a growing demand for fossil fuel drive the development of new technologies for internal combustion engines. Diesel engines are thermally efficient but require complex aftertreatment systems to reduce tailpipe emissions of unburned hydrocarbons (UHC), …
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Analysis of the quantity and cost of modelled nitrate deposition to the Vaal River from power station emissions with insights for cost-benefit analysis and policy recommendations
… deposition originating from power station NOx emissions. The objectives were: to examine the changes in nitrate deposition for the years 1980, 2005, 2006 and 2014; to determine the costs associated with nitrate deposition to freshwater ecosystems for the South African context; to calculate the …
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Environmental assessment of global site-specific industrial air pollution
… an in-depth analysis of global industrial air emissions and resulting human health impacts from nearly all global fossil power plants, steel mills, oil refineries and cement plants individually. Thus, detailed inventories are developed that link the specific technologies in use at more than 125 …
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Dopady klesající spotřeby vody na čistírnu odpadních vod
Bakalářská práce se zaměřuje na vliv a důsledky klesající spotřeby vody na čistírnu odpadních vod. Práce se zabývá spotřebou vody v ČR i obecně ve světě, přičemž se zohlední dopad na hygienické minimum množství vody na obyvatele; zmíněny jsou příčiny klesající spotřeby vody a důsledky tohoto jevu …