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 22 for “"Emissions Model"”.
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A physics-based emissions model for aircraft gas turbine combustors
In this thesis, a physics-based model of an aircraft gas turbine combustor is developed for predicting NO. and CO emissions. The objective of the model is to predict the emissions of current and potential future gas turbine engines within quantified uncertainty bounds for the purpose of assessing …
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Development and assessment of a soot emissions model for aircraft gas turbine engines
… a simplified method to estimate pollutant emissions for current and future aircraft gas turbine engines under different design and operating assumptions. A method for NOx and CO emissions was developed in a previous research effort. This thesis focuses on the addition of a soot mechanism to …
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Divided-chamber automotive diesel engine : development and validation of a performance and emissions model
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1982.
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Three essays on industrial pollution generation and structural change in a regional economy
Applying a regional econometric input-output model for the Chicago metropolitan region, the first part of the thesis analyzes direct and indirect patterns of industrial air pollution. Furthermore, an industry emissions model is developed and tested empirically. Based on output forecasts for the …
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Commercial and informal atmospheric emissions in the Mexico City Metropolitan Area : scenario analysis and policy proposals
… sectors contribute with significant amounts of emissions to the atmospheric pollution problem of the Mexico City Metropolitan Area (MCMA). It is more the case for some pollutants than for others, but, in any case, policies tackling the emissions of these sectors have been very few, and of very …
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Quantifying the Impact of Truck Only Lanes on Vehicular Emissions on a Limited-Access Highway
<p>This thesis seeks to estimate CO<sub>2</sub> emissions on a portion of the U.S. 101 highway in San Luis Obispo County before and after construction of a truck only lane on the Cuesta Grade. Towards that aim, the microsimulation software, VISSIM, was used in conjunction with the Environmental …
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Driver Safety and Emissions at Different PPLT Indications
… profiles. These profiles influence vehicular emissions and hence need to be studied as well. For this purpose, different scenarios are implemented in the driving simulator. Data is analyzed using Microsoft Excel, JMP Statistical tool and MATLAB. Safety of drivers is analyzed with respect to …
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Mitigating emissions and energy consumption for urban transportation networks : simulation-based signal control strategies
… detailed traveler behavior and network supply models. They represent individual vehicles and can therefore account for vehicle-specific technologies. These simulators can be coupled with instantaneous energy consumption and emissions models to yield detailed network-wide estimates of energy …
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Multi-Physics Co-Simulation of Engine Combustion and Exhaust Aftertreatment system: Development of a Multi-Physics Co-Simulation Framework of Engine Combustion and Exhaust Aftertreatment for Model-Based System Optimisation
The incorporation of detailed chemistry models in internal combustion engine simulations is becoming mandatory as new combustion strategies and lower global emissions limits are setting the path towards a more efficient engine cycle simulation tool. In this report, the computational capability of …
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What is measured is managed : statistical analysis of compositional data towards improved materials recovery
… intervals. Additionally, a greenhouse gas emissions model compared carbon dioxide emissions for different disposal methods of waste, in particular landfilling and recycling, based on the waste stream. This allowed for identification of recycling opportunities based on carbon dioxide …
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Potential for meeting the EU new passenger car CO₂ emissions targets
… the European Parliament agreed to limit the CO2 emissions from new passenger cars sold in the European Union to an average of 130g/km by 2015. Further, a probable longer-term CO2 emissions target of 95g/km is specified for 2020. This thesis attempts to assess the feasibility of meeting these …
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Intercomparison of soil hydrology modules in the MIT Integrated Global System Model for analysis of climate issues
… in the MIT Integrated Global System Model will improve its climate prediction capability. This thesis compares the performances of the hydrological modules in the MIT Climate Model and the Natural Emissions Model (NEM) with the off-line National Center for Atmospheric Research (NCAR) …
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The assessment of using SI engines for medium-duty applications
… in this study - ADVISOR and GEM (Greenhouse Gas Emissions Model). ADVISOR is a set of model, data, and script text files for use with MATLAB and Simulink. GEM is a vehicle simulation tool developed by EPA for compliance with the proposed greenhouse gas emissions standards and fuel efficiency …
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The projected pathways and environmental impact of China's electrified passenger vehicles
… in serious problems such as increasing CO2 emissions, energy insecurity, and air pollution. The question I examine here is how electrified vehicles (EVs) can help reduce China's energy demand and greenhouse gas (GHG) emissions in the future, and EV includes hybrid electric vehicle (HEV), …
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Nitrous oxide emissions under different corn field managements in the United States
… fertilizer use has increased agricultural N2O emissions and motivated research efforts to identify field management techniques that best mitigate N2O emissions and reduce these negative environmental impacts. In this study, field N2O emissions were quantified during the 2016 growing season by …
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Optimization tool for transit bus fleet management
… on investigating new bus technologies to reduce emissions and cost. However, they ignored the potential environmental and economic gain by improving the fitness and harmony between individual buses and routes in fleets. This dissertation provided, for the first time, a tool for fleet operator to …
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Investigation of Emissions and Fuel Economy for the Integrated Bus Information System
… objective of this study was to investigate emissions and fuel economy, and develop an Integrated Bus Information System (IBIS) for the Federal Transit Administration (FTA). IBIS included the development of transit fleet emissions models to assist transit agencies in evaluating the emissions …
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Global Commercial Aircraft Fuel Burn and Emissions Forecast: 2016 to 2040
… discusses enhancements to the Global Demand Model (GDM). The model addresses the need to predict: a) number of flights Worldwide by Origin-Destination (OD) airport pair, b) the number of seats (surrogate of demand) by OD airport pair, c) the fleet evolution over time, d) fuel consumption by …
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Multi-modal Energy Consumption Modeling and Eco-routing System Development
… the simulation-based system: energy consumption modeling, subway system development, on-road vehicles dynamic eco-routing, and information effect on route choice behavior. Other submodules such as pedestrian/bicycle modeling will be studied in the future. Towards the research goal, the …
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Emissions of Phthalate Plasticizer from Polymeric Building Materials
… contain a vast array of contaminating sources. Emissions from these sources produce contaminant concentrations that are substantially higher indoors than outside. Because we spend most of our time indoors, exposure to indoor pollutants may be orders-of-magnitude greater than that experienced …
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