Steam Turbines Articles
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Wood briquettes packed full of energy
Konolt manages its energy output using RUF briquetting machinery Timber processors Konold are improving their energy balance with the help of their RUF briquetting machine. Wood waste is being pressed into briquettes to create a uniform combustible material. The heat they produce is then used for process heating and to heat their premises, with the residual heat being used to generate ...
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Solar powered mini steam power plant: a simulation approach
The solar powered steam power plant is a mini power plant that is meant to generate power at the location of the consumer hence playing a pivotal role in distributed power generation. This plant will also have a huge impact on the environment as it utilises the sun's energy, making it eco–friendly and reducing its impact on the environment by reducing the amount of fossil fuel consumption. In ...
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Performance enhancement of GT–ST power plant with inlet air cooling using lithium bromide/water vapour absorption refrigeration system
Performance improvement techniques in power generation systems especially in gas turbine–steam turbine (GT–ST) combined cycle (CC) power plants by compressor inlet air cooling prove to be much improvising. In this work, the performance enhancement of CC power plant by inlet air cooling method using lithium bromide–water (LiBr/H2O) absorption refrigeration system powered by waste heat from heat ...
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Exergoeconomic optimisation of steam power plant
The second law of thermodynamics combined with economics forms a powerful tool for systematic analysis and assessment of energy systems. This paper presents an exergoeconomic optimisation of 50 MW steam turbine power plant associated with a large fertiliser industrial unit through Thermoeconomic Evaluation and Optimisation (TEO) method, and identifies the losses in various components. As the ...
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Performance enhancement of GT-ST power plant with inlet air cooling using lithium bromide/water vapour absorption refrigeration system
Performance improvement techniques in power generation systems especially in gas turbine-steam turbine (GT-ST) combined cycle (CC) power plants by compressor inlet air cooling prove to be much improvising. In this work, the performance enhancement of CC power plant by inlet air cooling method using lithium bromide-water (LiBr/H2O) absorption refrigeration system powered by waste heat from heat ...
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Indian CSP - Concentrating efforts to meet the JNNSN deadline
CSP Today reveals the important steps Indian developers are taking to meet the JNNSM deadline in May 2013. In December 2010 the Phase I bidding process of the Jawaharlal Nehru National Solar Mission (JNNSM) in India was completed with more than sixty companies submitting bids. The reverse bidding mechanism that was introduced under the JNNSM meant that solar projects were awarded to the lowest ...
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Sensitivity analysis and thermo-economic optimisation of Steam Injected Gas Turbine cycle design parameters
The purpose of the present work is to apply thermo-economic concepts to a Steam Injected Gas Turbine (STIG) electricity generation system and optimise it to indicate its economical advantages over a simple gas turbine. The system incorporates a combustion chamber, gas turbine, a compressor and a Heat Recovery Steam Generator (HRSG). A detailed sensitivity analysis was also performed to examine ...
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Transient stability improvement of power system using fuzzy operated steam diversion valve
This paper proposes a fuzzy based steam diversion valve to divert the steam to a storage tank during the occurance of a fault in a power system in order to improve stability of the system. The advantages of this technique over fast valving are discussed. The rate of opening and closing of valve are decided by the fuzzy controller. The valve operation is coordinated with fuzzy based braker. The ...
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Opening markets for CSP – the industrial heat application
Heavy industry can be a viable secondary market today for CSP producers, but questions remain on whether start-up costs are justifiable for industrial users, and how reliable CSP can be for processes that can't pace production by the sun. Solar thermal heat implies steam, and industries that need steam include refining, food processing, wood-working, desalination and chemicals, among others. ...
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The rise of Fresnel technology is heavily aided by the consolidation in the CSP industry
The need for increasing project scale is driving a round of partnerships and acquisitions that could soon see the CSP industry reduced to a few vertically-integrated monoliths and this could be aiding the raise of the Fresnel technology with AREVA entering strongly this market. In an industry that has seen more than its fair share of mergers and acquisitions in the last couple of years, ...
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Development of a tribological failure knowledge model
Many of the component failures occurring in service can be delayed by better incorporation of tribological principles into engineering design and maintenance. However, the concept of tribology has not yet penetrated successfully into the industry in general and there is an urgent need for the practical tribology design criteria and transference of tribological knowledge to the engineering ...
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Bioenergy and charcoal production: an alternative option for disposal of combustible municipal wastes
This project explored the possibility of using a CSIRO process to convert green waste (70,000 T/yr) to bioenergy. Tests conducted using CSIRO fluidised bed technique show that these wastes can be successfully converted to charcoal, and that this charcoal is very suitable for use as cooking fuels. The charcoal recovery rates achieved are also acceptable for commercial production and use as ...
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Plan B 4.0 by the numbers - data highlights on solar energy
Concerns about global warming, rising fossil fuel prices, and oil insecurity have prompted calls for a new energy economy, one that replaces fossil fuels with renewables. The sun is an enormous reservoir of energy; in fact, the sunlight reaching Earth in just one hour is enough to power the global economy for a whole year. Harnessing some of this energy is an essential component of Earth Policy ...
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Charting economic climate
The economic climate affects our day-to-day lives. Work activities are intricately interconnected with social well-being which in turn effects family harmony and trickles on down to impact personal wherewithal. Still, 'climate' is what it is. There is nothing any of us alone can do about it. At the same time, however, how we think about it tends to shift the reality we experience day to day. ...
By Special-Lite
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Energy analysis of Brayton combined cycles
Economic and environmental considerations dictate the need for improved fuel utilisation in thermal power stations. To meet this goal, a design project was undertaken to assess the suitability for Combined Cycle application of different Gas Turbine (GT) cycles: Simple, Intercooled, Reheated, Intercooled/Reheated, Intercooled/Reheated/Regenerative cycle. Comparative figures for efficiency and ...
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World geothermal power generation nearing eruption
With fossil fuel prices escalating and countries searching for ways to reduce oil dependence and greenhouse gas emissions, capturing the earth’s heat for power generation is garnering new attention. First begun in Larderello, Italy, in 1904, electricity generation using geothermal energy is now taking place in 24 countries, 5 of which use it to produce 15 percent or more of their total ...
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World geothermal power generation nearing eruption
With fossil fuel prices escalating and countries searching for ways to reduce oil dependence and greenhouse gas emissions, capturing the earth’s heat for power generation is garnering new attention. First begun in Larderello, Italy, in 1904, electricity generation using geothermal energy is now taking place in 24 countries, 5 of which use it to produce 15 percent or more of their total ...
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In situ weld repair of blade tenon of steam turbine in a power plant
During one of the routine inspections in a nuclear power plant, it was found that a tenon of one of the third-stage blades of the Low-Pressure (LP) turbine had been worn/broken off the turbine blade, leaving only the remaining tenon riveted to the shroud piece. With only one of the two tenons remaining, the blade was at risk of getting freed from the shroud piece. Hence, it was necessary to ...
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Numerical simulation of a large power steam turbine run-up
The purpose of this paper is to propose a new behavioural evaluation of a large steam turbine during the run-up period based on a numerical simulation of the transient fluid dynamic processes that occur in the turbine during start-up. The transient process begins when the run-up valve starts its opening trip and ends when the rotor speed achieves the required value. This original approach is a ...
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Evaluation of a process simulator for modelling and analysis of Rankine cycle steam power plants
Applicability of the HYSYS process simulation package to thermodynamic modelling and analysis of Rankine cycle steam power plants, using first and second law analyses, has been evaluated. Theoretical Rankine cycles, and more realistic cycles based on power plants modelled in other studies, were simulated. Energy, exergy and efficiency values determined from the simulations were compared to those ...
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