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 81 for “"Separators"”.
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Computer simulation of general systems of interlinked multistaged separators
Thesis: M.S., Massachusetts Institute of Technology, Department of Chemical Engineering, 1982
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Improving Efficiencies in Water-Based Separators Using Mathematical Analysis Tools
… the performance of conventional teeter-bed separators. Investigations utilizing the mathematical model were carried out and have predicted solid feed rates of up to 71 tph/m² (6 tph/ft²) can be achieved at acceptable efficiencies. The model also predicts that the unfavorable impact of …
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Shape Optimisation for Hydrodynamic Stability and its Application to Cyclone Separators
In many engineering applications it is desirable to have a steady flow field that is stable to perturbations. This can be described through a global stability analysis. This is an eigenvalue problem which gives a series of mode shapes (the eigenfunctions) and their growth rates and frequencies (the …
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A computational and experimental investigation into the performance of industrial refrigeration helical oil separators
An oil separator is a key component in an industrial refrigeration system as it prevents the compressor discharge oil creating a liquid film on the internal walls of the heat exchangers which leads to a reduction in efficiency of the system and increased operating costs. The Henry Technologies …
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Low-Density Cluster Separators for Large, High-Dimensional, Mixed and Non-Linearly Separable Data.
… clustering structures, using low-density cluster separators that bi-partition datasets using cluster boundaries that pass through regions of minimal density, separating regions of high probability density, associated with clusters. The bi-partitions arising from a succession of minimum density …
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Characterization and Cancellation of High-Frequency Parasitics for EMI Filters and Noise Separators in Power Electronics Applications
… characterization, evaluation and design of noise separators. Both theoretical and experimental analyses are applied to each topic. This dissertation tries to explore several important issues related to EMI filters and noise separators. The author wishes to find some helpful approaches to benefit …
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Impact of degradation of the moisture separators on the overall performance of the moisture separator reheater in a nuclear power plant
… The performance and optimisation of moisture separators is well studied in literature; however, there have been few investigations on the impact of moisture separator degradation on MSR performance. To investigate this impact a mathematical model, representing the steam flow through the MSR, …
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Evaluation of Hydraulic Separator Applications in the Coal and Mineral Industries
… industry has commonly utilized hydraulic separators throughout history for classification and gravity concentration of various minerals. More commonly referred to as hindered-bed or fluidized-bed separators, these units make use of differential particle settling rates to segregate …
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Spectral partitioning, eigenvalue bounds, and circle packings for graphs of bounded genus
… two longstanding questions about finding good separators in graphs of bounded genus and degree: 1. It is a classical result of Gilbert, Hutchinson, and Tarjan [12] that one can find asymptotically optimal separators on these graphs if he is given both the graph and an embedding of it onto a low …
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Mechanical behavior of shell casing and separator of lithium-ion battery
… test, characterization and modeling of battery separators since the mechanical properties of separators are crucial to internal shorts of lithium-ion batteries. Mechanical properties of commercially available four typical separators that including polypropylene (PP), trilayer (PP-PE-PP), …
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Downhole Gas Separator Performance in Sucker Rod Pumping System
… entering into the pump is to use downhole gas separators. The main purpose of these devices is to facilitate agglomeration of gas bubbles so that they migrate upwards and can be released through the casing annulus. Design and selection of downhole gas separators is usually done using …
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Scale-up of continuous chemical synthesis systems
… to test scaled-up membrane-based liquid-liquid separators which were studied in detail. Previous work demonstrated the use of microfiltration membranes to separate liquid-liquid systems by leveraging the dominance of interfacial tension over gravity at small scales. When scaling up, it was …
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Flow and separation of the oil from compressor discharge to external separator
… separation, and the design suggestions for oil separators. Characteristics of the oil mist at the compressor discharge are quantified by flow visualization techniques in this dissertation. Oil droplets are formed by oil film breakup during the periodic reed valve movement. The oil droplets are …
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Quality and intensity of pain associated with continuously applied orthodontic stresses of relatively high and low magnitudes
… during 4 phases: baseline, post-placement of separators, early and later tooth-loading. Pain intensity (MMPQ-SF, VAS, PPI) and generalized/emotional subscale scores showed no significant differences between stresses. Localized subscale scores were higher for 78 kPa compared to 4 kPa sides. …
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Continuous hydride generation in the presence of L- cysteine for the determination of arsenic, bismuth, antimony and tin in steels by inductively coupled plasma atomic emission spectrometry
… into four different types of gas-liquid separators. Two of the gas-liquid separators were available in-house. A third was developed for this project and a fourth was based on a design used by CET AC. The best signal intensity was achieved by the type II frit-based gas-liquid separator, …
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Assessment of the potential environmental impacts arising from mercury-free dental restorative materials
… capture device, the amalgam separator. Amalgam separators capture Hg and dental amalgam particles before wastewater discharge occurs. These amalgam separators are required to be installed in Ireland since the 1st of January 2019 in accordance with EU Directive 2017/852. The overarching objective …
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New Approaches to Automated Analytical Instrumentation
… is described. Various designs of gas-liquid separators (GLS) were investigated for continuous flow hydride generation, including a glass 'U' tube GLS, a silicone rubber membrane GLS and a microporous polytetrafluoroethylene membrane GLS.
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Aerodynamic Interactions in Vortex Tube Separator Arrays
… of axial flow gradients within associated separators that could affect filtration efficiency. The key factor here is the global swirl intensity, which is increased in array flows due to high angular momentum contributions from separators that are radially distant from the duct center. A …
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Predicting Motion of Engine-Ingested Particles Using Deep Neural Networks
… the design of gas turbine engine particle separators by reducing the computational expense to accurately simulate the fluid flow and particle motion inside the separator. It has been well-documented that particle ingestion yields many detrimental impacts for gas turbine engines. The …
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