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 58 for “"GWP"”.
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Detection of refrigerant leaks with focus on low-GWP mixtures
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Flow condensation of low GWP refrigerants inside smooth and micro/nano-structured macro/mini channels
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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Vapor-liquid equilibria of a low GWP refrigerant, R-1234ze(E), mixed with a POE lubricant
… densities of binary mixtures of an emerging low-GWP (Global Warming Potential) refrigerant, R-1234ze(E), and a polyol ester (POE) oil, RL68H, are measured. Data are presented for oil mass fractions ranging from 0 to 0.85 over a temperature range from -10 to 60°C, and the results are compared to …
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Performance optimization of advanced vapor compression systems working with low-GWP refrigerants using numerical and experimental methods
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-05-01
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Impact of two potential policy options on atmospheric chemistry and climate: hydrogen economy and low-GWP alternatives to ozone depleting substances
… policy options, (1) hydrogen economy and (2) low-GWP (Global Warming Potential) alternatives to hydrofluorocarbons (HFCs) and hydrochlorofluorocarbons (HCFCs), on the composition of the atmosphere, on environment, on climate and on stratospheric ozone. This research is accomplished by using …
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Life Cycle Optimization of a Zero Carbon Building for CO2e, Energy, and Cost Using Stochastic Controls for an Energy System Integrating a Heat Pump, Solar Air Wall, PV, and a Smart Grid-integrated Thermal Storage (SGTS) Hydronic Battery
… Canada. LCO is for global warming potential (GWP), energy, cost, and renewable friendliness. A life cycle assessment (LCA) based methodology (carbon return on investment – CROI) is proposed for design and retrofit decisions on the basis of GWP and cost. Sustainable building rating systems are …
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Lateral stakeholder alignment in the Global Water Partnership
… called the Global Water Partnership (GWP). The GWP represents a new breed of organization, a Global Multi-Stakeholder Network Organization (GMSNO), that has emerged in greater numbers in the last fifteen years as a means of addressing complex global social and environmental issues. …
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Government Wage Policy, Wage Determination, and the Development Process: A Case Study of Tanzania
… a study of the role of government wage policy (GWP) in economic development and labor market behavior with special reference to Tanzania. GWP includes not only direct action on wages, but legal and institutional changes which indirectly affect labor market processes and industrial relations.
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Carbon intensive but decarbonising quickly? Retrospective and prospective life cycle assessments of South African pome fruit
… fruit has a higher global warming potential (GWP) per kg fruit compared to pome fruit cultivated and packaged in other countries. Following on from this finding, is to determine whether the Greenhouse Gas (GHG) emissions for pome fruit in South Africa are declining, ,as could be expected based …
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Design and Lab Implementation of an Air Source Transcritical CO2 Heat Pump
… the performance of low-global-warming-potential (GWP) refrigerants for cold climate applications. A custom climate chamber was also constructed to simulate winter weather conditions typical of the northeastern United States. Both the TCHP and the chamber were fully instrumented to collect …
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Sustainability within the polyester value chain
… it was found that the global warming potential (GWP) and non-renewable resource use could be reduced by 28% and 16% respectively. Ethanol, and hence ethylene, can also be produced from willow, a lignocellulosic biomass, which could also potentially reduce nonrenewable resource use by 16%. …
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Multi-Material Continuum Topology Optimization for Embodied Carbon Objectives
… as such, minimize the global warming potential (GWP). This research provides an exploration of bi-material optimization problems that minimize GWP as well as compliance for a series of representative models. Two materials are considered; one with a stiff, high embodied carbon coefficient (ECC) …
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Assessment of the environmental acceptability of refrigerants by discrete mathematics: cluster analysis and Hasse diagram technique
… quantified by the global warming potential (GWP). ODP and GWP are related to the atmospheric lifetime (ALT), a third indicator. Hence, the environmental impact of a refrigerant may be characterised by a triple of ODP, GWP and ALT values. In this respect, an acceptable refrigerant is a …
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Reducing the global footprint in an anesthesia department : a quality improvement project
… 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 highest GWP among commonly …
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A Life Cycle Assessment of Three Department of Defense Airfield Paving Projects
… 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 Declarations (EPD) and …
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EVALUATING THE POTENTIAL OF TEMPERATE INLAND MINERAL SOIL WETLANDS AS NATURAL CLIMATE SOLUTIONS
… model. It demonstrates that the use of dynamic GWP* CO₂-e.q. metric is essential for detecting climate benefits or detriments associated with wetland drainage and restoration. Dynamic GWP* outperforms static GWP and SGWP metrics in terms of aligning wetland net CO₂-e.q. budgets to their …
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Heat transfer performance and prediction of low global warming potential R134a refrigerant alternatives
… 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 system; it is vital to have a …
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Identifying sustainable organic management systems in urban India : case study of Pune, India
… waste processing. The global warming potential (GWP) of anaerobic digestion, pelletization, composting, and landfilling is estimated to be -51, -42, 38, and 510 kg CO-eq/ton, respectively. A city looking to minimize its contribution to global warming could achieve significant reductions in …
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Removing the Quantum Barrier to Sustainable LH2 Fuel in Aviation: A Mechanistic, Process, and Environmental Life Cycle Assessment of the Ortho-Para Conversion in Liquefaction
… incorporating the Global Warming Potential (GWP) of vented boil-off hydrogen. The findings reveal that the carbon intensity of the electricity source and boil-off management are the dominant factors determining the overall GWP. When produced with renewable electricity, LH2 can achieve GWP …
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Correlation Analyses among Soil, Plant, and Environmental Variables and Greenhouse Gas Emissions from Furrow-irrigated Rice on a Silt-loam Soil
… and emissions and global warming potential (GWP) and near-surface soil properties and environmental factors over two growing seasons (2018 and 2019) under furrow-irrigated rice on a silt-loam soil in eastern Arkansas. Gas samples were collected weekly between planting and harvest from …
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