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Full-Text Articles in Engineering
Contemporary Problems In Aerosol Aggregation And Gelation, Pai Liu
Contemporary Problems In Aerosol Aggregation And Gelation, Pai Liu
McKelvey School of Engineering Theses & Dissertations
Aggregation of nanoparticles in aerosols is a fundamental phenomenon with important implications to diverse fields ranging from material synthesis to pollutant control. The past few decades have witnessed extensive research on investigating the structure and growth mechanism of aerosol aggregates with sizes spanning across several orders of magnitude. This dissertation focuses on some contemporary problems that remain unaddressed in this topical area. Aerosol aggregates in sub-micron regimes, which are formed via the irreversible collision and aggregation of solid nanoparticle monomers, are fractal-like in their morphology. A mathematical description of this seemingly random structure dates to the seminal works by Forest …
Modeling The Effects Of Distribution System Topology On Water Quality, Chun-Ying Chao
Modeling The Effects Of Distribution System Topology On Water Quality, Chun-Ying Chao
McKelvey School of Engineering Theses & Dissertations
Inadequate treatment of drinking water causes the formation of disinfection by-products and the regrowth of harmful microbial species. Various studies have addressed the problem of water quality monitoring, but very few have employed topological analysis, a valuable mathematical tool widely applied in biological, business, and social research. This thesis examines the relationship between the topological properties of water distribution systems and water-quality models. In particular, the research proposes a novel framework for mapping network topological attributes to water-quality models. This research adopts topological metrics to assess the accuracy of the predictions of chlorine concentrations in dead ends. It examines four …
Role Of Submicrometer Particles In Advanced Technologies Of Carbon Capture, Zhichao Li
Role Of Submicrometer Particles In Advanced Technologies Of Carbon Capture, Zhichao Li
McKelvey School of Engineering Theses & Dissertations
Oxy-combustion and post-combustion carbon capture technologies are two of the most promising strategies for carbon capture and storage (CCS), which is a commonly accepted approach to address the challenge of climate change. Pressurized oxy-combustion has been actively studied due to its great potential to enhance the power plant energy efficiency by recovering latent heat from water vapor condensation without incurring additional gas compression cost. On the other hand, amine-based CO2 scrubbers have been demonstrated to have high removal efficiency of CO2 with the possibility to recycle amine solutions, which makes the technology a promising candidate for post-combustion carbon capture. Nonetheless, …
Role Of Submicrometer Particles In Advanced Technologies Of Carbon Capture, Zhichao Li
Role Of Submicrometer Particles In Advanced Technologies Of Carbon Capture, Zhichao Li
McKelvey School of Engineering Theses & Dissertations
Oxy-combustion and post-combustion carbon capture technologies are two of the most promising strategies for carbon capture and storage (CCS), which is a commonly accepted approach to address the challenge of climate change. Pressurized oxy-combustion has been actively studied due to its great potential to enhance the power plant energy efficiency by recovering latent heat from water vapor condensation without incurring additional gas compression cost. On the other hand, amine-based CO2 scrubbers have been demonstrated to have high removal efficiency of CO2 with the possibility to recycle amine solutions, which makes the technology a promising candidate for post-combustion carbon capture. Nonetheless, …
Recent Advances In Low-Cost Particulate Matter Sensor: Calibration And Application, Jiayu Li
Recent Advances In Low-Cost Particulate Matter Sensor: Calibration And Application, Jiayu Li
McKelvey School of Engineering Theses & Dissertations
Particulate matter (PM) has been monitored routinely due to its negative effects on human health and atmospheric visibility. Standard gravimetric measurements and current commercial instruments for field measurements are still expensive and laborious. The high cost of conventional instruments typically limits the number of monitoring sites, which in turn undermines the accuracy of real-time mapping of sources and hotspots of air pollutants with insufficient spatial resolution. The new trends of PM concentration measurement are personalized portable devices for individual customers and networking of large quantity sensors to meet the demand of Big Data. Therefore, low-cost PM sensors have been studied …