power plant optimization Articles
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Thermal exergy optimisation for an irreversible cogeneration power plant
The optimal design model, based on exergy analysis, of an irreversible cogeneration cycle has been presented using finite-time thermodynamics. The external irreversibility is due to the thermal resistance between the system and the heat reservoirs while the internal irreversibility is due to the non-isentropic compression and expansion process within the system. The internal irreversibility of ...
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A necessary condition for optimum Rankine cycle power plants
Consumers pay more for electricity than necessary partly because commercial power plant operating criteria are not universally valid. Although such plants are commonly designed to provide electricity at least cost for given conditions, operating criteria lack a rigorous thermodynamic basis. The current empiricism alone costs US consumers billions of dollars per year. This dilemma exists because ...
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Utility-Scale PV Solar Trends: Increasing Power and Module Size
A primary goal of utility-scale PV power plants is to optimize power production. To achieve that goal, manufacturers are turning to increased module sizes in the hopes of increasing module power. This can bring lower levelized cost of energy, lower balance of system costs, faster installation, and, sometimes, even reduced land costs. With 650W+ modules now available, it appears that large module ...
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Performance optimisation of the combined single flash binary geothermal power plant
In this paper, the optimal operating conditions of a hypothetical combined single flash-binary geothermal power plant are investigated and performance analyses are performed based on Aydin-Germencik field in Turkey. The relationship between flashing pressure, turbine inlet pressure of the binary cycle and total heat transfer area of the heat exchanger are determined for maximum power output of ...
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Simulation tool for optimising the design and operation of combined cycles
Carrying out a preliminary analysis of the complex thermal processes of combined cycle power plants enables us to optimise their performance, reduce costs and ensure the supply chain. The use of mathematical modelling and simulation tools plays a key role in these environments because we can study the transient states that take place in the system. Developed by Empresarios Agrupados, EcosimPro is ...
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Electricity reforms and firm level responses: changing ownership, fuel choices, and technology decisions
This paper examines how electricity reforms in India managed to influence the responses of generating firms. Indian electricity reforms have federal and state character. This paper utilises an extensive survey of generation units in Gujarat State. The findings suggest that reforms have created heterogeneous ownership of generation units. The fuel-mix and technology choices of new owners differ ...
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Less is more? Results from a case study on improving the safety review process at a nuclear power plant
This paper focuses on technical safety reviews of plant modifications at a Swedish nuclear power plant. The primary aims of the presented study include identifying the main areas for improvement of the existing technical safety review process, developing a new process, and evaluating whether any improvements were accomplished. It was concluded that grading of the primary safety review reports ...
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The 700?C steam turbine power plant ? status of development and outlook
This paper appraises the current development status of the 700?C steam power plant under consideration of process optimisation as well as design aspects of the steam turbine and steam generator. The results for a compact arrangement of the steam turbine and steam generator are also presented. Based on a cycle analysis, a net efficiency between 49.3% and 51.4% can be achieved with the 700?C steam ...
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First nuclear power in Nigeria: an attempt to address the energy crisis?
This paper attempts to explore to what extent a first Nuclear Power Plant (NPP) will improve the energy situation in Nigeria and investigates the socio–economic impacts of the NPP on the communities where the facilities are to be sited. Other issues that are addressed in this paper include the policy issues, lack of investments in power infrastructure and the security threat owing to incessant ...
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Thermo-economic efficiency of low capacity coal-based power plants
The method of estimation of thermo-economic factors, allowing the justification of the construction of low capacity coal-based power plants has been developed in the present paper. The C-curve method applied for thermo-economic analysis is used here for determination of the optimal ratio between specific exergetic and cost-performance factors. The results of the analysis show that for coal-based ...
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Assessing and improving the efficiencies of a steam power plant using exergy analysis. Part 2: improvements from modifying reheat pressure
The effect of increasing reheat pressure on the exergy efficiency of a coal-fired steam power plant is investigated. The results show that although the irreversibility rate associated with heat transfer in the steam generator decreases as reheat pressure increases, the overall-plant exergy efficiency decreases, mainly owing to the relatively large decrease in shaft power output. The results ...
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Stellio heliostat set to cut CSP tower costs by 20%
A new heliostat modeled on South African data is using a pentagonal reflector design, innovative construction techniques and smart software to boost the cost efficiency of tower plants. Heliostat fields typically contribute about 50% of the capital investment for CSP tower plants, according to a study by SBP Sonne, the German engineering firm which has developed the Stellio heliostat design. ...
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Technical and economic studies on the optimisation of prospective coal-fired power stations
The paper considers problems of choosing rational parameters of thermal power plants on fossil fuel. A technique for comparison of the energy and economic efficiency of prospective coal-fired power plants is described. The optimisation results of parameters of combined-cycle plants with coal gasification at low and high-temperature levels and steam turbine plants on supercritical steam parameters ...
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Pulp and Paper Factory S.A. Choose Clarke Energy in Romania
Combinatul de Celuloza si Hârtie S.A (Pulp and Paper Factory) in Romania, have chosen Clarke Energy to install a combined heat and power (CHP) plant to optimise the utility costs of their operation. The main objective of this investment is to increase operational energy efficiency at CCH S.A. Drobeta Turnu Severin through the implementation of the high-efficiency cogeneration plant. The ...
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Dcentralizing Data Center Power
Replacing a centralized electrical distribution system with a distributed power architecture sets up a facility to handle unexpected demand spikes. The Covid-19 pandemic has radically changed the way people are using the digital infrastructure. The stay-at-home advisories and social distancing measures have increased the demand for a reliable internet speed. Whole industries have moved vast ...
By AKCP
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Opportunities to improve the efficiency of existing coal-fired power plants
Executive Summary Reducing the carbon footprint of energy production activities has emerged as one of the defining environmental issues of the 21st century. The U.S. energy infrastructure encompasses an enormous investment in capital assets and systems to produce fuels and electric power for businesses, transportation, and homes. While the long‐term opportunity to reshape this ...
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Modelling and exergoeconomic based design optimisation of combined power plants
In this research a combined cycle power plant (CCPP) which can provide 80 MW of electrical power has been studied. The design parameters of the plant were chosen as: compressor pressure ratio, compressor isentropic efficiency, gas turbine isentropic efficiency, and turbine inlet temperature, pinch difference temperature, steam turbine inlet temperature, steam turbine isentropic efficiency, ...
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Will natural gas dim solar’s shine?
As natural gas booms, renewable energy proponents ponder whether it will serve as a bridge or roadblock to photovoltaic power On the outskirts of downtown St. Paul, Minn., Xcel Energy’s High Bridge Generating Station offers an iconic view of the current state of electrical generation in the United States. Opened in 2008 as a replacement for an aging coal plant, the 534-megawatt natural gas ...
By Ensia
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