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 55 for “"Electric Arc"”.
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Electrode length measurement in electric arc furnaces
Accurate measurement of electrode length in electric arc furnaces will result in decreased maintenance time, and improved plant productivity. This thesis describes the development of a microwave-based Soderberg electrode length-measurement system. Various methods of electrode-length measurement …
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Pyrohydrolytic de-halogenation of electric arc furnace dusts
Includes bibliographical references (pages 200-204).
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Mathematical modeling of D.C. electric arc furnace operations
A fundamental study of the Direct Current Electric Arc Furnace (DC-EAF) for steel-making has been carried out through the development of a rigorous mathematical model. The mathematical representation involves the simultaneous solution of Maxwell's equations for the electromagnetic fields, and the …
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Air quality at an electric-arc steel manufacturing plant
… air sampling program was conducted at an electric-arc secondary steel manufacturing facility using the HI-VOLUME Sampler reference method for suspended particulates. A wind recording device was installed at the facility to provide a continuous record of wind data for correlation with the …
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Characterization of thermo-chemical properties of electric arc plasma actuators
Made available in DSpace on 2012-05-22T00:32:49Z (GMT). No. of bitstreams: 3 Sanders_Bradley.pdf: 3950226 bytes, checksum: 6d13168dd33011bda773e827fa05155e (MD5) Sanders_Bradley.docx: 27837244 bytes, checksum: bca4e05988b21491e4ef301725bb4666 (MD5) license.txt: 4065 bytes, checksum: …
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Modelling and state-estimation of steelmaking in an electric arc furnace.
… control of the steelmaking process in the electric arc furnace are presented and progress made in applying computer control is reviewed. The development of a mathematical model of the refining process is shown to be restricted by the complex metallurgical nature of the process and the …
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Modelling and analysis of electric arc loads using harmonic domain techniques
… has been reported that as much as 12% of global electricity production goes into producing artificial light using arc discharge lamps and that global annual production of these lamps may be as much as 1.2 billion units. In the liquid steel production industry, one metric tone of steel demands, on …
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Active control of supersonic boundary layers using electric arc plasma actuators
… Plasma Jet (PPJ) and an array of Localized Arc Filament Plasma Actuators (LAFPAs), which both have shown promise for supersonic applications. The PPJ design consists of three electrodes and two circuits. One circuit is a high-voltage, trigger circuit, which creates an arc discharge between …
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The development of a construction material using electric arc furnace dust
… further. This solution was selected by Roanoke Electric Steel as a possible way to dispose of electric arc furnace dust, a by-product which contains a variety of heavy metals which are classified as hazardous by the United States Environmental Protection Agency. In this study, the furnace dust …
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Design and calibration of a high temperature continuous run electric arc wind tunnel
… performance of a high temperature continuous-run electric arc wind tunnel. A pilot model of such a facility was designed assuming that equilibrium air was the working gas. The pilot model facility was constructed and consisted of the following components; arc chamber, stagnation chamber, nozzle …
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Economic evaluation and design of an electric arc furnace controller based on economic objectives
Please read the abstract in the section, 00front of this document
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Active control of massively separated high-speed/base flows with electric arc plasma actuators
… was undertaken to evaluate the effects of electric arc plasma actuators on high-speed separated flows. Two underlying goals motivated these experiments. The first goal was to provide a flow control technique that will result in enhanced flight performance for supersonic vehicles by altering …
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Design of a primary off-gas scrubber for a ferro-manganese electric arc furnace process
An electric arc furnace makes use of electrical energy in the form of an arc to heat charged material. In the ferromanganese smelting process the ferric oxide (Fe2O3) and manganese oxide (MnO2) are reduced with coke. The basic reaction that takes place is described in the following equation Fe203 + …
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Treatment of inorganic hazardous waste constituents found in electric arc furnace dust by solidification/stabilization
… were evaluated for use as a treatment method for electric arc furnace dust. Specific objectives were (1) to develop a solidified material capable of meeting EPA requirements for heavy metal leaching, and (2) to develop a solidified material that could be used for construction. Results from the …
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Assessing Opportunities to Reduce Carbon Dioxide Emissions from Electric Arc Furnace Steelmaking in the United States
… the energy transition. This thesis focuses on Electric Arc Furnace (EAF) steelmaking, which accounts for roughly 70% of steel production in the United States. Decarbonization levers for EAF producers are diverse—encompassing energy efficiency (EE) measures, fuel switching, material input …
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A theoretical plasma physics model of the plasmatron
… to determine the behavior of a high pressure electric arc discharge inside the Plasmatron Fuel Reformer. The Plasmatron Fuel Reformer uses an electric arc to partially combust fuel in an internal combustion engine to increase efficiency and reduce emissions. Solutions of the conservation …
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Identification of The Steel Decarbonization Options for Different Regions
… for substantial decarbonization. This research endeavors to identify such pathways through comprehensive modeling. We evaluate the impact of technology replacement, fuel switching, and carbon capture and storage (CCS) on energy demand, costs, and emissions in crude steel production. The …
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