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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 25 for “"Steam Turbines"”.
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Dynamic clearance modelling of steam turbines
… operation has become important to the field of steam turbine modelling. This study sought to develop a computationally inexpensive turbine model with minimal OEM intervention in order to predict the internal clearances of high-pressure and intermediate-pressure turbines from Eskom's current …
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Unsteady Wetness Effects in Low Pressure Steam Turbines
… prediction of the droplet size distribution in steam turbines is crucial for the correct analysis of wetness losses and other two-phase effects. Measurements taken in the later stages of LP turbines have shown broader size distributions with larger average sizes than those predicted by numerical …
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Numerical Loss Prediction of high Pressure Steam Turbine airfoils
Steam turbines are widely used in various industrial applications, primarily for power extraction. However, deviation for operating design conditions is a frequent occurrence for such machines, and therefore, understanding their performance at off design conditions is critical to ensure that the …
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Development of appropriate steam turbine models in Flownex
… this goal. The development of appropriate steam turbine models in Flownex supports fulfilment of this goal. Steam turbines of fossil and nuclear power plants make up most of the generating capacity for the majority of industrialised and industrial developing countries, except for those …
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Techno-economic modelling of cogeneration options for the South African sugar industry
… were back-pressure and condensing extraction steam turbines, as well as, high-efficiency gas engines in open and closed cycles. The least-cost optimizing TIMES modelling framework was used to evaluate the cogeneration investment decision for different cogeneration configurations under …
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Diverting steam created in a nuclear reactor to produce electricity more economically
… by varying the load to the turbine by diverting steam from before the turbine while the nuclear reactor runs at full power. In order to understand this project idea of diverting steam to a thermal storage to increase profit, literature on nuclear systems, steam turbines, and regulations was …
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Electricity production from sugar industries in Africa : a case of South Africa
… as much as 9.4 TWh, using Condensing Extraction Steam Turbines. However, this increase varies among countries with the highest being Swaziland, 67%, and the lowest South Africa, 1.5%, due to the current capacity. The actualization of this technical potential, however, can only come about with …
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Enhancing the effectiveness of the utility energy supply chain in integrated steel manufacturing
… systems, and 90% of the industry uses standard steam boilers, steam turbines and BOP (Basic Oxygen Process). The boilers produce steam which is used for power generation and production processes. The system consumes oil, natural gas and blast furnace gas (BFG) to produce this steam and …
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Mechanical properties of materials for fusion power plants
… is transformed into heat and electricity via steam turbines. The constant ux of neutrons on the rst wall of the reactor produces atomic displacement damage through collisions with nuclei, and gas bubbles as a result of transmutation reactions. This leads eventually to hardening and …
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A survey of cylindrical bearing practice of the United States
… engines, aircraft engines, Diesel engines, steam turbines, electric motors, and generators, rolling mills, railroad cars and engines, heavy duty equipment, line shafting, gyroscopes, ships and steam engines. (d) The basic theory of the perfectly lubricated journal bearing is understood, but …
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Aerodynamics of Low Pressure Steam Turbine Exhaust Systems
… avenue for improving the performance of large steam turbines. For this reason, LP exhaust systems have attracted the attention of the research community for decades. Nevertheless, we still lack understanding of the flow physics and loss mechanisms in the exhaust system, especially at part-load …
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Real gas effects in ORC turbines
… on turbine performance. Most prominently ORC turbines are operating with a multitude of different working fluids that have very strong variations in gas properties. Moreover, this also applies to conventional steam turbines or first stage HP turbines with very high temperatures, where the gas …
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Tests of a Kerr steam turbine with saturated steam
Made available in DSpace on 2017-11-30T22:46:03Z (GMT). No. of bitstreams: 2 5966517.pdf: 5699447 bytes, checksum: 443c188a304540b3e643b2e2a5bd9a44 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1907
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Tailoring hydrodynamics of non-wetting droplets with nano-engineered surfaces
… in almost all energy processes, including steam turbines, oil pumping, condensers and boilers, the efficiency of energy transportation can be maximized such that the liquid-solid interaction is optimized. Texture based super-hydrophobicity, also known as the Lotus effect, has been one of …
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Comprehensive throughflow method for steam turbine development
… measurements. However, condensation in steam turbines is much more complex and optical measurements show a much broader droplet spectrum than in nozzles and steady cascade expansions. The dominant theory explaining this behaviour is that large-scale fluctuations in static temperature …
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Influence of heat treatment condition on the stress corrosion cracking properties of low pressure turbine blade steel FV520B
… industry especially in low pressure (LP) steam turbine blades operating in the phase transition zone. An investigation has therefore been conducted to examine the effect of heat treatment condition on the microstructure, mechanical properties and SCC properties of one such LP turbine blade …
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Tests of a 60 h.p. Kerr steam turbine with superheated steam
Made available in DSpace on 2017-11-30T22:46:02Z (GMT). No. of bitstreams: 2 5966317.pdf: 5958325 bytes, checksum: f0b7cb13481442d98e01f34ffbd72dbf (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1907
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Homopolar bearingless slice motors with magnet-free rotors for extracorporeal life support
… and high-temperature applications, such as steam turbines and turbochargers in vehicles.
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Westinghouse PWR : the rise and fall of a dominant design in the electric power industry
… on electrical components, notably the large steam-turbines used in nuclear power plants. The emergence and consolidation of a dominant design in any industry has many consequences. In nuclear power, some of the relevant issues are standardization, learning effects, economies of scale, and …
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Integrated renewable energy polygeneration networks: a multi-objective optimisation and game theoretic approach
… contains a boiler for generating high-pressure steam, steam turbines for power production, a multi-effect evaporation system for desalinating seawater, and an absorption refrigeration system to produce chilled water. This layer also includes the option of connecting the boiler to a solar-thermal …
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