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 37 for “"process industries"”.
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Development of lightweight insulating refractories for steelmaking and other high-temperature process industries
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1996, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science & Engineering, 1996.
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Algorithms, analysis and software for the global optimization of two-stage stochastic programs
Optimization models in the chemical process industries often include uncertain model parameters due to uncertainties in market forces and the environment, use of reduced-order and surrogate process models, and difficulty in measuring parameters accurately. Optimal solutions to formulations that …
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Effect of Engineered Surfaces on Valve Performance
… valves is a major maintenance concern in process industries. Anecdotal information indicates that reliability of some high maintenance valves has been improved by using an ion deposition process to achieve engineered surfaces on selected components. This project compared friction for …
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Process potentiometric sequential injection titrations
… the fact that many acid-base titrations in the process industries rely on manual titration which is time consuming. Miniaturization of these titration processes becomes attractive because of the reduced reagent consumption. These industries must produce higher quality products economically and …
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A collaborative, multi-agent based methodology for abnormal events management
… and conceal faults, causing many faults in the process to remain undetected, until serious consequences occur. This thesis strives to explore new methodologies suitable for fault detection and identification (FDI) during transient mode of operations. Though the emphasis of this thesis is mainly …
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Practical modelling and control implementation studies on a pH neutralization process pilot plant
… of advanced control techniques for the process industries has become more demanding, mainly due to the increasing complexity of the processes themselves as well as to enhanced requirements in terms of product quality and environmental factors. Therefore the process industries require …
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Gain Conditioning for Linear Model Predictive Control
… control (MPC) is used in a wide variety of process industries. Linear MPCs calculate adjustments in multiple manipulated variables (MVs) to ensure that operating constraints are obeyed and that controlled variables (CVs) are maintained near their setpoints. Industrial practitioners who …
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Real-Time and Energy-Efficient Routing for Industrial Wireless Sensor-Actuator Networks
… of industrial standards such as WirelessHART, process industries are adopting Wireless Sensor-Actuator Networks (WSANs) that enable sensors and actuators to communicate through low-power wireless mesh networks. Industrial monitoring and control applications require real-time communication among …
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Cyber-Physical Co-Design of Wireless Control Systems
… (WSAN) technology is gaining rapid adoption in process industries because of its advantages in lowering deployment and maintenance cost in challenging environments. While early success of industrial WSANs has been recognized, significant potential remains in exploring WSANs as unified networks …
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Design and development of a target-costing model for machining
… that companies in automotive, electronic and process industries have reaped the benefits of target costing. However target costing approach has not been applied in the machining industry, but other techniques based on Geometric Programming, Goal Programming, and Lagrange Multiplier have been …
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Electroplating process plant automation and management using emerging automation and communications technologies
The Electroplating (EP) process industry is currently facing some challenging process control problems in their production plant due to an insufficient level of automation being applied in the industry; the control is largely manual, and the monitoring of both plant and processes is ad hoc. The …
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Bolted flanged connections made of fiber reinforced plastic materials
… materials have been used in the chemical and process industries for several decades, chiefly because of the ability of many FRP materials to resist attack by various chemicals. FRP tanks, pressure vessels and piping have successfully been used to replace expensive equipment formerly made in …
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Computational analysis of non-isothermal flow of non-Newtonian fluids
… is a model problem in bio-fluidics and in process industries. We investigate a class of such fluids and flows under conditions of heat and/or mass transfer. Experiments have shown that under certain flow conditions, some complex fluids (e.g. worm-like micellar solutions and some polymeric …
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Expert systems for fault analysis
… Tree Analysis, FMEA and Fault Diagnosis in the Process Industries. This thesis described a proposed architecture for such an Expert System. The purpose of the System is to produce a descriptive model of faults and fault propagation from a description of the physical structure of the plant. From …
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Factors affecting human reliability in the chemical process industry
… may influence human reliability within chemical process plants - these factors are referred to as Performance Shaping Factors (PSFs). Following a period of familiarization within the industry, a number of case studies were undertaken covering a range of basic influencing factors. Plant records …
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Computational fluid dynamical studies of structured distillation packings
… packings have become more widely used in the process industries because of their improved volumetric efficiency. Most structured packings consist of corrugated sheets placed in the vertical plane The corrugations provide a regular network of channels for vapour liquid contact. Until recently …
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Investigation of chaotic mixing in laminar fluid systems by the use of computational fluid dynamics
… advance towards designing chaotic mixers for process industries. Domains inducing chaotic motion through twisting flows are also briefly considered. This work concludes by offering possible advancements to the property developed to quantify disorder and suggestions of domains and associated …
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Application of expert systems in heavy capital plant.
… of equipment for the oil, steel and chemical process industries, the Heavy Capital Plant Industry (H.C.P.I.). The production of bespoke equipment relies heavily on experience, which makes it a prime candidate for the application of expert systems. A company operating in this area, producing …
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Modeling and experimental validation of a single-feed semi-batch precipitation process
… throughout the chemical and pharmaceutical process industries. Despite its widespread application, crystallization still suffers a disproportionate number of process difficulties due to the complexity of the steps involved in the process. In particular, the final characteristics of the …
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