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 226 for “"Greenhouse gas (GHG)"”.
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A classification of carbon footprint methods used by companies
The percent increase in greenhouse gas (GHG) concentration in the atmosphere can be harmful to the environment. There is no single preferred method for measuring GHG output. How can a company classify and choose an appropriate method? This thesis offers a classification of current methods used by …
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Catchment Scale Downscaling of Hydroclimatic Variables from General Circulation Model Outputs
… and water resources adversely. Rising greenhouse gas (GHG) concentrations in the atmosphere are considered the dominant cause of climate change. General Circulation Models (GCMs) are used for the projection of climate into future, accounting for the GHG concentrations. However, the …
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A comparative study of climate change mitigation regime proposals, and the Triptych approach, and a South African energy model
… world with the cause being increased levels of greenhouse gas (GHG) emissions. The required solution is a decrease in global GHG emission levels. Under the UNFCCC a number of proposals exist for decreasing CO₂ levels. This thesis first makes use of the FAIR 2.2 policy support tool to determine …
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Aqueous reactivity of glassy industrial byproducts in alternative cementitious systems
… tons cause an estimated 5-11% of global annual greenhouse gas (GHG) emissions. Material substitution with lower-footprint resources is therefore necessary for GHG impact mitigation. Glassy silica-, alumina-, lime-, and/or alkali-rich industrial byproducts (IBs) exhibit the properties necessary …
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A life cycle based energy and greenhouse gas emission assessment of C&D waste and container glass recycling in the City of Cape Town
… difference in cumulative energy demand (CED) and greenhouse gas (GHG) emissions for two waste management options: landfilling and recycling for the two materials of Construction and Demolition (C&D) rubble and container glass in the City of Cape Town (CCT) in order to determine which option has …
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Energy management of nuclear-renewable hybrid energy system for fast charging station
… sector is one of the largest contributors to greenhouse gas (GHG) emissions. Due to this, electric vehicles (EVs) have become popular as it reduces emissions significantly. Despite this significance, EVs negatively impact the grid due to the high load of the charging stations. Hence, an …
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Discrete optimization of upgrade scheduling
… mission to meet climate change goals of reducing greenhouse gas (GHG) emissions is to transition from fossil fuels to zero-emission energy. Fossil fuel production and transportation account for approximately half of the GHG emissions in Canada, making transitioning to zero-emission vehicles (ZEV) …
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Indicators for Minimizing Energy Consumption and GHG Emissions at Wastewater Treatment Facilities
… energy which contributes to large quantities of greenhouse gas (GHG) emissions. According to the U.S.EPA, nearly 3% of the USA's energy is used to treat wastewater. This consumption is increasing at faster rates with increase in population and regulations. Wastewater facilities use large number …
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Greenhouse Gas Emissions from Natural Gas Development in Western Canada: A Gap Analysis
The greenhouse gas (GHG) emissions of conventional and unconventional natural gas are primarily methane and carbon dioxide that are released in natural gas development activities. Addressing these emissions have gained attention because of recent climate commitments. Life Cycle Assessment (LCA) can …
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The value of pumped hydro storage in a decarbonized world
… nuclear, wind, and solar PV and its impact on greenhouse gas (GHG) emissions.
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Optimization of a Hydrogen Alternative Aviation Fuel Supply Chain Under Demand and Emissions Constraints - A Case Study of Canada
… alternative aviation fuels, to meet national greenhouse gas (GHG) emissions reduction commitments was investigated using a mixed-integer-linear-program (MILP) optimization model that minimized the total energy consumed “energy intensity” for a hydrogen-based alternative aviation fuel supply …
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Optimized clean hydrogen production using nuclear small modular reactor and concentrated solar power as a renewable energy source
… as a key fuel and energy source by decreasing greenhouse gas (GHG) emissions. In this research an integral Pressurized Water Reactor-type Small Modular Reactor (iPWR-type SMR), connected to a molten-salt based Concentrated Solar Power (CSP) plant, producing electricity and hydrogen is …
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Improving cold climate performance of heat pumps using market-available systems
… based heating systems for reducing residential greenhouse gas (GHG) emissions, but common mild climate systems suffer significant performance losses at the low outdoor temperatures experienced in cold climates. Improved heat pumps for cold climates already exist, but they are more expensive and …
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A Methodology for Estimating Greenhouse Gas Emissions from Heavy Duty Diesel Trucks Used for Road Transportation in the Construction Sector
… Vehicles (HDDVs) is one of the main causes that Greenhouse Gas (GHG) emissions from the road transportation experienced a significant increase since 1990. With 97.5% of the total fleet used for delivery being HDDVs, these vehicles play an important role in Canada’s freight transportation. Latest …
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The development of a regional inventory database for the material phase of the pavement life-cycle with updated vehicle emission factors using moves
… 14044 guidelines, was performed. As such, the greenhouse gas (GHG) emissions and energy consumption per unit mass of materials were computed and combined to develop a regional LCI database. The study updated the existing vehicle emission factors through simulations using EPA’s newest vehicle …
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A Life Cycle Assessment of Three Department of Defense Airfield Paving Projects
… (DOD) began implementing strategies to reduce greenhouse gas (GHG) emissions to net-zero by 2050. In support of these goals, this thesis uses life cycle assessment (LCA) to analyze one concrete and two asphalt airfield paving projects from three military installations, quantifying associated …
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A Utopian failure The One-Tonne Challenge, climate change and consumer conduct
… all be measured and evaluated according to the greenhouse gas (GHG) inventory, an ecological technology of government that has had its application extended to the 'personal' level. As consumers increasingly engage in practices that are energy efficient, a 'low intensity GHG emission lifestyle' …
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The Potential Environmental Benefits of Hybrid Rice Varieties
… a major issue and potential carbon policies on greenhouse gas (GHG) emissions, Arkansas rice producers may need to undergo some changes in regards to rice cultivar selection. The purpose of this study is to estimate the environmental benefits of cultivating hybrid rice varieties as opposed to …
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Life cycle analysis of hybrid poplar trees for cellulosic ethanol
… poplar's energy input and output as well as greenhouse gas (GHG) emissions. The system boundary is divided into three sections, agriculture, transportation, and ethanol processing. In this LCA, only energy from fossil fuels is accounted for, and only energy yield from ethanol yield is …
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Quantifying greenhouse gases in business supply chains
… must explore a variety of methods for reducing greenhouse gas (GHG) emissions. Whilst national governments and international organisations enact treaties and frameworks, the role of business as a driver of increasing GHG emissions is also being examined. In these circumstances the measurement of …
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