power plant Articles
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Closing the door on building new coal-fired power plants in America
Community opposition, legal challenges, and financial uncertainty over future carbon costs are prompting companies to rethink their plans for coal. Since the beginning of 2007, 95 proposed coal-fired power plants have been cancelled or postponed in the United States--59 in 2007, 24 in 2008, and at least 12 in the first three months of 2009. This covers nearly half of the 200 or so U.S. coal-fired ...
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Accident analysis for nuclear power plants with modular high temperature gas cooled reactors
BACKGROUND This report on modular high temperature gas cooled reactors (modular HTGRs) is intended to supplement the IAEA Safety Standards Series. The publications in this series related to the present report are the Safety Requirements on Safety of Nuclear Power Plants: Design [1] and the Safety Guide on Safety Assessment and Verification for Nuclear Power Plants [2]. Clarification of the ...
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Accident analysis for nuclear power plants with modular high temperature gas cooled reactors
This report on modular high temperature gas cooled reactors (modular HTGRs) is intended to supplement the IAEA Safety Standards Series. The publications in this series related to the present report are the Safety Requirements on Safety of Nuclear Power Plants: Design [1] and the Safety Guide on Safety Assessment and Verification for Nuclear Power Plants [2]. Clarification of the accident analysis ...
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Complete Overhaul of unique hydro power plant Želina - Case Study
The small hydro power plant Želina built on Ohre river has been commissioned since1908 year and these days is being listed as technical heritage of the Czech Republic. Generating technology is still oparated by CEZ. Scope of Želina power plant works is complete overhaul and modernization of two Francis turbine units, installation of new intake trash racks, up-grading of trash raking machines and ...
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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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Application of the contingent valuation method in a developing country: a case study of the Yusufeli Dam in northeast Turkey
Hydroelectric power plants and dams often play an important role in developing countries in terms of their contribution to economy. In accordance with the energy policies of Turkish Republic, Yusufeli Dam and Hydroelectric Power Plant in Northeastern Turkey have been initiated. In this study, the Contingent Valuation Method (CVM) was conducted in Yusufeli Village to determine the environmental ...
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Halifax case study
Highway 101 Landfill Sackville, Nova Scotia In 2001 Highland Energy Inc. was contacted by the Halifax Regional Municipality regarding their recently closed landfill on route 101 in Sackville, Nova Scotia, with regards to determining the potential to develop a landfill gas to energy project. Highland conducted its due diligence and feasibility studies and concluded that, subject to certain ...
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The combined effect of changes in the condenser cooling seawater temperature, fouling and salinity on the thermal performance of a pressurised water reactor nuclear power plant
This study presents the effect of temperature, fouling factor and salinity of the condenser cooling seawater and adverse effect on the thermal performance of a nuclear power plant. These are the most important factors affecting the condenser performance. The study is carried out on a pressurised water reactor nuclear power plant. The results showed that a loss in the plant output power and ...
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Project - Solar Storage Portfolios in Europe
The European largest operational solar farm is Mula Photovoltaic Power Plant in Spain, with a total installed capacity of 494MW, built by ACS, a subsidiary of Cobra, in 2019. However, the title will not last for long as another Spanish solar power plant, the Francisco Pizarro Plant, is under construction with a total installed capacity of 590MW and 1.7 million solar modules, announced by ...
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The state of the art in nuclear power plant instrumentation and control
Advances over the past decade in process Instrumentation and Control (I&C) for nuclear power plants have occurred in three areas: 1. digital I&C; 2. sensors and transmitters; 3. online monitoring. These areas are the subject of this paper, including a discussion of the related opportunities and challenges.Keywords: digital instrumentation, digital control, nuclear power plants, NPP, nuclear ...
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Thermodynamic analysis of an integrated gasification combined cycle power plant: effect of nitrogen supply on system performance
A comprehensive thermodynamic analysis of a conceptual integrated coal gasification combined cycle power plant is presented. Energy and exergy efficiencies and exergy destructions of each sub–unit are calculated. The effect of nitrogen, which is supplied from the Air Separation Unit (ASU) of the gasification unit to the combustion chamber of the gas turbine (GT) cycle, on system performance is ...
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Environmental impact of radioactive releases due to Trino Vercellese Nuclear Power Plant decommissioning
As a consequence of the decision to cease operating the Italian Nuclear Power Plant (NPP) at Trino Vercellese, the environmental impact of its decommissioning has been evaluated. The radioactive releases from the NPP are very small and it is indeed very difficult to determine the critical group. The effective doses to representative members of the critical group are extremely low and well below ...
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On system validity, quasi-experiments, and safety: a critique of NUREG/CR-6393
Based on the methods of Cook and Campbell (1979), a quasi-experimental validation model for complex human–machine systems has been recommended for the final evaluation of nuclear power plant control rooms (O'Hara et al., 1997). This model-based approach to validating systems and assuring safety is critiqued in terms of experimental theory and engineering practice. It is concluded that the model ...
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Studies on competitiveness of space and terrestrial solar power plants using global energy model
Global energy model GEM-10R has been used to analyse the possible conditions and scale of using space and terrestrial solar power plants in the long-term perspective (up to the end of the 21st century). Different external conditions, when these alternative energy technologies may be feasible, have been revealed and discussed.Keywords: global energy model, space-based power systems, lunar power ...
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Time response measurements of the Angra 1 nuclear power plant using direct and indirect methodologies
Estimation of sensor response characteristics is necessary to satisfy requirements on allowable response time for nuclear power plants. The methodology currently used includes direct and indirect measurements, each of them having its advantages and disadvantages. The objective of this work is to compare the time response measurements of temperature and pressure sensors which the Brazilian Angra 1 ...
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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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Compilation of wind energy assessment software and wind energy assessment in the northwest of Iran
Development trend of wind data assessment software, Visual WIDA®, is discussed in this paper. In the beginning, theories and standards required for wind energy assessment which are used in the software are introduced and some methods provided by the writers for the calculation of the main parameters are described. Afterwards, capabilities of Visual WIDA are illustrated in detail. In this ...
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Modelling and simulation of reaction kinetics of carbon dioxide absorption into aqueous ammonia in a wetted wall column
Carbon dioxide accounts for about 80% of all greenhouse gases (GHG) and thus becomes the major source responsible for global warming which is considered as the greatest environmental challenge the world is facing. The post–combustion capture is the main way to lower the emission of existing power plants and future power plants where CO2 is produced during the combustion. Solvent–based ...
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The cultural organisation model: analysing the cultural construction of nuclear safety
The economic deregulation of the electricity markets which began in most Western countries in the 1990s has given rise to a previously non–existent field of research. Nuclear power plants have been particularly affected, and as a result of these financial pressures are undergoing significant cultural changes that are having a negative impact on their safety. This research aims to examine this ...
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NUTEMA: a tool for supervising nuclear technology and for the transfer of knowledge
In this paper is presented NUTEMA (Nuclear Power Plant Technology Management System) an IT innovative system dealing with the nuclear technology. The overall goal is to offer a framework capable to present in one room whatever is concerned with a Nuclear Power Plant (NPP) unit implementing together a multilevel and multi–view user access according to enterprise architecture models. The NUTEMA ...
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