Tài liệu miễn phí Năng lượng
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A minimal predictive model for better formulations of solvent phases with low viscosity
In this work, we have analyzed this problem for the example of N,N-dialkylamides in the presence of uranyl nitrate experimentally. Furthermore, we present a minimal model at nanoscale that allows rationalizing the experimental phenomena by connecting the molecular, mesoscopic and macroscopic scale and that allows predicting qualitative trends in viscosity.
6/18/2020 5:24:06 AM +00:00
Validating nuclear data uncertainties obtained from a statistical analysis of experimental data with the “Physical Uncertainty Bounds” method
Concerns within the nuclear data community led to substantial increases of Neutron Data Standards (NDS) uncertainties from its previous to the current version. For example, those associated with the NDS reference cross section 239Pu(n,f) increased from 0.6–1.6% to 1.3–1.7% from 0.1–20 MeV.
6/18/2020 5:23:59 AM +00:00
Infrastructure and international cooperation in research and knowledge transfer: supporting access to key infrastructures and pan-European research lessons learned
he outcome of projects as TALISMAN (I-3), EFNUDAT/NUDAME (I-3), GENTLE (mobility), ENEN-plus (mobility), NUGENIA-plus (mobility within TA of NUGENIA) and ESNII-plus (I-3 similar) will be shortly presented as well as the future European Commission plans in the field of access to research infrastructure.
6/18/2020 5:23:53 AM +00:00
Improved expertise in radiation protection, nuclear chemistry and geological disposal
This paper describes the aims and achievements of these projects and, based on insights and experiences from these projects, provides some recommendations for future policy support regarding maintaining competences in nuclear industry and research.
6/18/2020 5:23:47 AM +00:00
Education, training and mobility: towards a common effort to assure a future workforce in Europe and abroad
The paper highlights the main features of some Euratom projects, which have been running recently in support to education, training and mobility in the nuclear fields. The described projects address various critical aspects of nuclear knowledge management, aiming at maintaining the wealth of nuclear expertise in Europe in an environment characterised by decreased attractiveness of nuclear careers.
6/18/2020 5:23:41 AM +00:00
Nuclear data research supported by EURATOM: CHANDA, ERINDA and EUFRAT
The paper describes the holistic and inclusive approach of these projects that have also worked together to coordinate the European nuclear data research capabilities to improve the facilities, detectors, models and evaluation, validation and simulation tools.
6/18/2020 5:23:35 AM +00:00
Nuclear cogeneration with high temperature reactors
In this context, the European Nuclear Cogeneration Industrial Initiative (NC2I) has launched the projects NC2I-R and GEMINI+ aiming to prepare the deployment of High Temperature Gas-cooled Reactors (HTGR) for this purpose.
6/18/2020 5:23:29 AM +00:00
Advances on GenIV structural and fuel materials and cross-cutting activities between fission and fusion
This paper describes six projects, most of which are part of the research portfolio of the EERA JPNM, devoted to qualification, modelling and development of structural and fuel materials for advanced and innovative nuclear systems, with also two examples of projects addressing issues of cross-cutting interest through fusion and fission.
6/18/2020 5:23:23 AM +00:00
Fuel fabrication and reprocessing issues: the ASGARD project
At the end of the project 27 papers in peer reviewed journals were published and it is expected that the real number will be the double. The training and integration success was evidenced by the fruitful implementation of the Travel Fund as well as the unique schools, e.g. practical and theoretical handling of plutonium.
6/18/2020 5:23:17 AM +00:00
Review of Euratom projects on design, safety assessment, R&D and licensing for ESNII/Gen-IV fast neutron systems
Nine Euratom projects started since late 2011 in support of the infrastructure and R&D of the seven fast reactor systems are briefly presented in the paper in terms of key objectives, results and recommendations.
6/18/2020 5:23:04 AM +00:00
Probabilistic safety assessment for internal and external events/ European projects H2020-NARSIS and FP7-ASAMPSA_E
This project led to a collection of guidance reports that describe existing practices and identify their limits. Moreover, it allowed identifying some idea for further research in the framework of collaborative activities.
6/18/2020 5:22:52 AM +00:00
Safety assessments and severe accidents, impact of external events on nuclear power plants and on mitigation strategies
The Fukushima-Daiichi accidents in 2011 underlined the importance of severe accident management (SAM), including external events, in nuclear power plants (NPP) and the need of implementing efficient mitigation strategies.
6/18/2020 5:22:46 AM +00:00
Innovative and safe supply of fuels for reactors
Within the Euratom research and training program 2014–2018, three projects aiming at securing the fuel supply for European power and research reactors have been funded. Those three projects address the potential weaknesses – supplier diversity, provision of enriched fissile material – associated with the furbishing of nuclear fuels.
6/18/2020 5:22:40 AM +00:00
Advanced numerical simulation and modelling for reactor safety contributions from the CORTEX, HPMC, McSAFE and NURESAFE projects
The goal of the simulation strategies is to model complex multi-physics and multi-scale phenomena specific to nuclear reactors. The use of machine learning combined with such advanced simulation tools is also demonstrated to be capable of providing useful information for the detection of anomalies during operation.
6/18/2020 5:22:27 AM +00:00
Reactor performance, system reliability, instrumentation and control
The paper discusses scientific challenges faced in the beginning and achievements made throughout the projects, including the industrial impact and lessons learned.
6/18/2020 5:22:21 AM +00:00
Safety assurance through advances in long-term operation
Mindful of the challenges to long-term operation, especially the severe safety and environmental consequences shown through historical nuclear power plant accidents (e.g. Fukoshima, Chernobyl, etc), it is imperative that European research and innovation focuses on demonstrating reliable long-term operation.
6/18/2020 5:22:15 AM +00:00
Euratom success stories in facilitating pan-European education and training collaborative efforts
The European Atomic Energy Community (Euratom) Research and Training framework programmes are benefitting from a consistent success in pursuing excellence in research and facilitating Pan European collaborative efforts across a broad range of nuclear science and technologies, nuclear fission and radiation protection.
6/18/2020 5:22:09 AM +00:00
UC1 sampling plan, liquid waste storage tanks, JRC Ispra
In this paper, deliverable 3.4 (D 3.4) is presented for WP 3, where the strategy developed in deliverables 3.1 (D 3.1) to 3.3 (D 3.3) is applied to the first of three reference use cases representative of existing decommissioning scenarios.
6/18/2020 5:22:03 AM +00:00
INSIDER UC2: the BR3 biological shield preliminary results and future work
Aiming at economical optimization, the characterisation of the biological shield of the Belgian Reactor 3 is one of the three use cases intended to validate the integrated characterization methodology developed within the INSIDER project.
6/18/2020 5:21:57 AM +00:00
Preliminary proliferation study of the molten salt fast reactor
This paper has the main objective of presenting some proliferation challenges for the reference version of the Molten Salt Fast Reactor (MSFR), a large power reactor based on the thorium fuel cycle.
6/18/2020 5:21:51 AM +00:00
Effect of the [U(IV)]/[U(III)] ratio on selective chromium corrosion and tellurium intergranular cracking of Hastelloy N alloy in the fuel LiF-BeF2-UF4 salt
Effect of the [U(IV)/U(III)] ratio of fuel salt on selective chromium corrosion and tellurium intergranular cracking (IGC) of Hastelloy N alloy in the LiF-BeF2-UF4 salt mixture was investigated. The chromium corrosion of Hastelloy N alloy is caused by the oxidation of chromium on the alloy surface by reaction with UF4.
6/18/2020 5:21:43 AM +00:00
Influence of the dissolved hydrogen concentration on the radioactive contamination of the primary loops of DOEL-4 PWR using the OSCAR code
The aim of this article is to evaluate the influence of the change in the Dissolved Hydrogen (DH) concentration on the contamination of the primary loops of DOEL-4 PWR, a Belgian unit. After the description of the principle of the OSCAR V1.3 code, its use is illustrated with the simulation of DOEL-4.
6/18/2020 5:21:37 AM +00:00
Energy efficiency through lighting and cooling system approach
This work reports the implementation of using energy efficient electronic devices to reduce the electricity consumption in Universitas Muhammadiyah Yogyakarta (UMY). The first step taken by UMY is to replace lighting and cooling system in all its rooms using energy saving devices. This research was conducted in building E4.
6/18/2020 4:48:17 AM +00:00
Renewable energy investment for middle and upper class housing sector in Indonesia: Investigating the scope for a change in policy
This is because the battery leads to high investment and maintenance cost. From a government point of view, developing policy towards renewable energy usage in urban households could help to reach national electrification and environmental targets without extra capital allocation as well as relieve pressure on the already overburdened state electricity company, the PLN.
6/18/2020 4:48:05 AM +00:00
A novel two-phase approach for solving the multi-compartment vehicle routing problem with a heterogeneous fleet of vehicles: a case study on fuel delivery
This paper is motivated by the fuel delivery problem where the main objective of this research is to minimize the total driving distance using a minimum number of vehicles.
6/17/2020 10:43:01 PM +00:00
Wavelet analysis of renewable, non-renewable energy consumption and environmental degradation as a precursor to economic growth: Evidence from Malaysia
The present study utilized continuous wavelet power range, and wavelet coherence power range estimations to analyze the relationship among renewable energy consumption, non-renewable energy consumption and environmental degradation by taking about quarterly data for the time of 1997(1) to 2017(4). Moreover, the consequences of wavelet coherence affirm that ENG and CO2 emission have a bi-directional causal association with one another in the medium run and a uni-directional causal relationship where ENC is driving in a short run era. However, we found no proof of a causal relationship in a long and long run period. Finally, the aftereffects of wavelet coherence affirm that RENE and CO2 emission have a bi-directional causal association with one another in short run and a uni-directional causal relationship where CO2 emission is driving in medium run day and age.
5/20/2020 3:55:26 AM +00:00
Toward developing energy star rating development in Jordan
The objective of this article is to provide an efficient means of enforcing green building in Jordan, the Middle East. The paper is proposing assessment tool of Energy Star Rating Scheme and also explaining its role for achieving sustainable development during buildings lifecycle and hence reducing energy and water usage. The scheme development will remove considerable environmental, social and economic issues as Jordan is a country that renowned for its poor energy and water resources. The article provides technical aspects, means, technologies and processes for proposing and implementation green star ratings for buildings.
5/20/2020 3:55:20 AM +00:00
The contribution of environmental strategies, entrepreneurial innovation and entrepreneurial orientation in enhancing firm environmental performance and energy efficiency
The objective of the current study is to empirically investigate the link between entrepreneurial attributes, strategic capabilities, and environmental nexus in Malaysian manufacturing firms. In doing so, the present study is motivated to recognize the role of entrepreneurial innovation, entrepreneurial orientation and environmental strategies in influencing firm’s energy efficiency potential and environmental performance. To the best of our knowledge, the current study is first of its kind in investigating the effect of the considered explanatory variables on energy efficiency. Moreover, in line with the rising emphasis on environmental impact of firms, the current study is novel for identifying the relationship of firm’s internal expertise and capabilities in leading environmental performance.
5/20/2020 3:54:44 AM +00:00
Techno-economic feasibility of energy supply of water pumping in palestine by photovoltaic-systems, diesel generators and electric grid
The agriculture sector nowadays in Palestine relies mostly on conventional energy sources and traditional irrigation ways. Considering some factors such as high costs of fossil fuels and providing new electrical network, especially to remote areas and where grid electricity is either inaccessible or expensive to expand, therefore a solar photovoltaic (PV) powered irrigation system can be a practical choice for irrigating. In this paper, a PV-powered direct-current water pump system design for irrigation is presented, techno-economic feasibility of using solar PV systems for water pumping to replace a diesel engines and electric pumps also is presented. The PVSyst simulation software was used for convenience and monetary issues. Solar PV water pumping is found to be more economically in comparison to diesel or electricity water pumping in rural, urban and remote regions in Palestine.
5/20/2020 3:54:38 AM +00:00
Technical efficiency of thermal electricity generators in Kenya
The Government of Kenya introduced energy sector reforms in the late 1990s aimed at improving efficiency in the supply of energy. After over two decades of reforms, there has been no comprehensive study to estimate the technical efficiency amongst electricity generators in Kenya. This study examined 27 thermal electricity generating plants in Kenya using data sourced from Energy Regulation Commission for the period July 2015 to December 2017. The study applied two methods to estimate efficiency, viz., the Stochastic Frontier Analysis and Data Envelope Analysis. The results indicated that there is inefficiency in thermal power generation.
5/20/2020 3:54:32 AM +00:00