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Particle Size, Gas Temperature, And Impingement Cooling Effects On High Pressure Turbine Deposition In Land Based Gas Turbines From Various Synfuels, Jared M. Crosby
Particle Size, Gas Temperature, And Impingement Cooling Effects On High Pressure Turbine Deposition In Land Based Gas Turbines From Various Synfuels, Jared M. Crosby
Theses and Dissertations
Four series of tests were performed in an accelerated deposition test facility to study the independent effects of particle size, gas temperature, and metal temperature on ash deposits from two candidate power turbine synfuels. The facility matches the gas temperature and velocity of modern first stage high pressure turbine vanes while accelerating the deposition process. This is done by matching the net throughput of particulate out of the combustor with that experienced by a modern power turbine. In the first series of tests, four different size particles were studied by seeding a natural-gas combustor with finely-ground coal ash particulate. The …
A 300-Year Geochronological Assessment Of Atmospheric Mercury Depostition In California, Rhea D. Sanders
A 300-Year Geochronological Assessment Of Atmospheric Mercury Depostition In California, Rhea D. Sanders
Capstone Projects and Master's Theses
Aquatic mercury (Hg) contamination and subsequent bioaccumulation pose a threat to human and ecosystem health. The mitigation of contaminated water bodies requires an understanding of natural baselines of metal concentrations and fluxes. In this study, six age-dated sediment cores were analyzed to assess temporal and spatial variability of atmospheric Hg deposition from remote natural lakes throughout California. Geochemical proxies, including 210Pb, particle size, magnetic susceptibility, organic carbon and organic nitrogen, were measured to apportion Hg concentrations between atmospheric deposition, anthropogenic and watershed processes. Anthropogenic Total Hg (HgT) lake sediment concentrations increased by factors of 2 to 10 times that of …