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.
Results
Showing 1 to 20 of 93 for “"global warming potential"”.
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Heat transfer performance and prediction of low global warming potential R134a refrigerant alternatives
… environmental regulations are phasing out high global warming potential (GWP) refrigerants such as R134a. Since many potential alternative refrigerants have flammability and cost concerns, minimizing system charge is critical. The condenser is typically responsible for 50% of the charge of a …
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Development of the materials, construction, and maintenance phases of a life cycle assessment tool for pavements
… of sustainability in terms of impacts such as global warming potential and total energy demand. This research study details the creation of a regionalized LCA tool, particularly for concrete pavements, focusing on the methodology of the construction and maintenance/rehabilitation phases with …
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Evaluation of environmental foot printing techniques
… the use phase contributes over 95% of the total global warming potential (carbon footprint) given the selected assumptions. For the production phase, printed circuit boards and integrated circuits contribute over 70% of the total global warming potential. The iNEMI Eco-Impact Evaluator …
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Assessment of sludge management options in a waste water treatment plant
… and (3) Composting. Life cycle impacts of global warming potential, eutrophication, acidification, ozone layer depletion potential were calibrated using GaBi.
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Investigation of alternative fuels for various applications: experimental and life cycle assessment studies
… sustainable alternative, exhibiting the lowest global warming potential (0.003 kg CO2 eq/MJ) and abiotic depletion potential. Ethanol and formic acid demonstrated remarkable environmental performance. Diesel, gasoline, and kerosene had the highest impacts on global warming potential, …
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Analysis and optimization of a dual-load vapor compression cycle using non-azeotropic refrigerant mixtures
… Mixtures (NARMs) have been identified as potential replacements for R12 because of their low ozone depletion potential, low global warming potential and promising thermodynamic characteristics which could improve cycle efficiency. A NARM experiences a variable temperature glide during a …
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Experimental investigation and mathematical modelling of dynamic equilibrium of novel thermo-fluids for renewable technology applications
… problems. Solar thermal energy has a potential to diminish the dependency on fossil fuels and reduce CO2 emissions in which solar radiation is converted to heat via a thermal fluid for power and heat generation. Medium and high-temperature solar thermal systems where concentrated …
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Biochar amendment as a tool for improving soil health and carbon sequestration in agro-ecosystems
… software to quantify the carbon balance and global warming potential of biochar produced from three local feedstocks (softwood, hardwood, and hay) applied to pasture soils in Southwest Virginia. Feedstock type, pyrolysis gas yield, and transportation distance significantly contributed to …
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Risk Analysis and Damage Assessment For Flood Prone Areas in Washington DC
… such as detailed digital elevation data, global warming potential, and storm surge for a category IV hurricane. The main goal of this study is to employ a standard method for estimating flooding damages in Washington by supplying combination of the mentioned parameters to the HAZUS-MH 2.0 …
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Development of waste management systems: applications of Durham Region
… exergy efficiencies, 58.7% and 56.8%, the lowest global warming potential, 0.167 kgCO2 eq, and a competitive levelized cost of 0.23$/kWh. Electric fueled trucks have better overall environmental impacts with the least in global warming, ozone depletion, and acidification potential with 3.92E-05 …
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Emissões de gases fluorados causadores de efeitoestufa: desenvolvimento e análise de cenários para o Brasil até 2050
Fluorinated gases are fluids with high global warming potential. Although, presently less than 2% a year, the total global emissions of these compounds have been growing sharply in the last years. This study aims to elaborate scenarios for fluorinated greenhouse gas (HFC, PFC and SF6) emissions in …
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Utilization-adaptive Memory Architectures
… significantly to a server system's cost and global warming potential. To make matters worse, DRAM density scaling has not kept up with the scaling in logic and storage technologies. An effective way to reduce DRAM's monetary and environmental cost is to increase its effective utilization and …
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A Life Cycle Assessment of Three Department of Defense Airfield Paving Projects
… military installations, quantifying associated Global Warming Potential (GWP) contributions from materials, transportation, and construction (life cycle stages A1 through A5). LCA results were calculated using the openLCA software with input data from pavement material Environmental Product …
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Reducing the global footprint in an anesthesia department : a quality improvement project
… agents are potent greenhouse gases with high global warming potential (GWP), long atmospheric lifespans, and significant contributions to perioperative emissions. Despite scavenging systems, a significant portion of these agents are released into the environment, with Desflurane having the …
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Life cycle analysis of waste management options for EBI in Quebec
… environmental impact, Eutrophication Potential. This cost also falls within EBI's constraint of the project costing under one million dollars. Composting is the second recommended option, with no initial investment due to its inclusion in the current infrastructure at EBI, and Global …
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Carbon intensive but decarbonising quickly? Retrospective and prospective life cycle assessments of South African pome fruit
… products with a high carbon footprint through potential trade barriers, border tariffs and consumer lobbying. The objective of this research is to determine whether South African pome fruit has a higher global warming potential (GWP) per kg fruit compared to pome fruit cultivated and packaged …
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Life cycle assessment of conventional and alternative fuels for vehicles
… depletion, acidification, eutrophication, global warming, ozone layer depletion and human toxicity potential using three different impact assessment methods. The analyses show that hydrogen vehicle is found to have the lowest environmental impacts with ozone layer depletion of 8.14×10-10 kg …
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Calculation of Electron Collision Cross Sections in Fluorinated Nitrile (C4F7N) and its Dissociation Fragments
… due to its higher dielectric strength and low global warming potential relative to SF6. To evaluate the behavior of this novel gas during high-voltage gaseous discharges, plasma models require electron-neutral collision cross sections to calculate parameters such as transport coefficients. At …
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The optimal reverse logistics network for consumer batteries in North America
… logistics networks and the execution of a global warming potential analysis for each network. It is shown that, of the two available reverse logistics networks, in terms of kg C02 equivalents generated per metric ton of batteries processed one network is approximately double the …
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Impacts of enhanced efficiency nitrogen fertilizers on yield-scaled N2O emissions in Illinois maize
… greenhouse gas (GHG) with about 300 times the global warming potential of CO2 and significant levels of this GHG come from agriculture. A two-year field experiment was conducted to assess the ability of enhanced efficiency nitrogen fertilizers (EENFs) to minimize yield-scaled N2O emissions …
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