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 10 of 10 for “"depletion potential"”.
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Assessment of sludge management options in a waste water treatment plant
… Composting. Life cycle impacts of global warming potential, eutrophication, acidification, ozone layer depletion potential were calibrated using GaBi.
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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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Sustainable design of hydrocarbon refrigerants applied to the hermetic compressor
… (HFCs) such as R134a which has a zero ozone depletion potential (ODP). The use of HFCs has also come under scrutiny as they have high global warming potential (GWP) and inferior thermodynamic and lubricating properties and have been replaced by hydrocarbon (HC) refrigerants such as R600a in …
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Investigation of alternative fuels for various applications: experimental and life cycle assessment studies
… 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, acidification potential, …
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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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The Influence of Nonadsorbed Polymer on the Behavior of Weakly Flocculated Suspensions
… nature. Correspondingly, total interparticle potential calculations obtained by summing van der Waals and steric interactions yielded an attractive minimum of a few $k\sb{b}T$, at interparticle separation distances $h \approx$ 2$\delta$. Upon the addition of nonadsorbed PMMA species, …
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Design, Testing And Controls For Air Source Heat Pump System In Cold Climates Using Natural & Conventional Refrigerants
… to the HFC refrigerants. R744 has zero ozone depletion potential (ODP) and a global warming potential (GWP) of 1 which is almost thousand times lower than the HFC refrigerants.</p> <p>In this study, air source heat pump systems with natural refrigerant and conventional refrigerant R410A have …
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Scuffing and wear of engineering materials under different lubrication regimes in the presence of environmentally friendly refrigerants
… and non-toxic, but posses a high ozone depletion potential (ODP). Despite the fact that HFCs have zero ODP, they were found to have a high global warming potential (GWP) being considered one of the green house substances to be banned by the Kyoto agreement. The interest for long term …
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Assessment of the environmental acceptability of refrigerants by discrete mathematics: cluster analysis and Hasse diagram technique
… ozone layer, quantified by the ozone depletion potential (ODP). Some of the first replacements mooted were hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs), which contribute to the global warming, quantified by the global warming potential (GWP). ODP and GWP are related …
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Dynamics and assembly of colloidal particles
In this dissertation, I present research into the dynamics and assembly of colloidal particles. This involves investigations into single particle dynamics, collective dynamics of assembled clusters, and thermodynamic studies of colloidal superstructure formation. To do this, I have utilized a …