Search results for "Energy engineering"
showing 10 items of 1099 documents
Ethical Ratings: A Systematic Analysis Oriented to Business Economics
2013
Abstract In a previous study we have researched the causes of the current global crisis, which manifests itself in financial terms, but whose origin is due to the ethical model of reference. Following these ethical issues, the aims and topics of the present paper are: producing a systematic analysis of the ethical indicators used in the current international practices; extrapolating the ethical ranking models with a high relevance in Business Economics and highlighting the strong limits of the methodology in current use.
EU transition in power sector
2019
Abstract In the past, much of Europe’s electricity grid network has been designed in consideration of the locations of conventional generation plants. However, a large share of today's renewables production – notably variable wind and solar – does not correspond to this grid architecture. Interconnectors, in addition to internal infrastructure, are key to creating new electricity corridors to connect areas of surplus to areas of scarcity. In this context, in 2014 the European Council, in recognizing that a fundamental role of transmission infrastructure is to enable the integration of areas of high renewable energy potential with main consumption areas, endorsed the proposal by the European…
Electrodynamic Control of the Combustion Characteristics and Heat Energy Production
2015
ABSTRACTElectric field effects (EFE) on combustion characteristics, heat energy production, and composition of polluting emissions have been investigated experimentally for different types of fuels (natural gas, biomass) providing experimental study of the EFE in a district heating boiler and complex modeling experiments in a small-scale pilot device. The DC field-induced variations of the produced heat energy, efficiency of heat energy production, flame characteristics, and the composition of polluting emissions have been studied for a positively biased axially inserted electrode and negatively biased (grounded) heat surfaces by varying the applied DC voltage, net current, and consumed ele…
Maximizing energy transfer and RES integration using dynamic thermal rating
2019
Abstract The production of electricity from wind and other renewable sources is rapidly increasing all over the world, causing significant changes in the management of electrical systems. The current structural asset is not adequate to manage this growing generation of energy. The hypothesis of construction of new power lines would mean taking into consideration economic, political and social problems. The following paper reports the experience gained by the Italian TSO, Terna S.p.A, on the use of the DTR (Dynamic Thermal Rating), which is able to dynamically calculate the real transport capacity of an overhead power line. The results obtained are encouraging as they show how it is possible…
Calibration of a knock prediction model for the combustion of gasoline-LPG mixtures in spark ignition engines
2015
Gaseous fuels, such as liquefied petroleum gas (LPG) and natural gas (NG), thanks to their good mixing capabilities, allow complete and cleaner combustion than gasoline in spark ignition (SI) engines, resulting in lower pollutant emissions and particulate matter. In a previous work the authors showed that the simultaneous combustion of gasoline and LPG improves an SI engine efficiency with respect to pure gasoline operation with any significant power loss. The addition of LPG to the gasoline-air mixture produces an increase in knock resistance that allows running the engine at full load with overall stoichiometric mixture and better spark advance. In order to predict both performance and ef…
Quality based classification of gasoline samples by ATR-FTIR spectrometry using spectral feature selection with quadratic discriminant analysis
2013
Abstract A chemometric approach has been developed for characterization of gasoline samples regarding their quality. Attenuated total reflectance – infrared spectrometric data were processed by genetic algorithm (GA) and successive projection algorithm (SPA) feature selection techniques, being employed as an initial step prior to apply a discriminative tool. It was aimed to classify the fuel samples according to their quality passed/failed data. Chemometric predictive procedures were developed using quadratic discriminant analysis (QDA) combined with GA and SPA as a feature subset and feature selection strategy. Results showed 93.3% and 95.6% accuracy for SPA-QDA and GA-QDA models respectiv…
Risk Management Era in European Credit Institutions: Predictable Mutation in XXI Century
2014
Abstract In the market economy, globalization, liberalization and diversification of financial markets, fierce competition between the credit institutions and many of the products and services offered by them are the main factors that have exposed the banking sector to new risks, while leading to multiple challenges. For these reasons it is becoming increasingly important both permanent innovation and risk management techniques tools as well as banking performance. Only a pertinent analysis and a very good knowledge of the new tendencies in banking financial risk management can provide credit institutions in Romania efficient options on their use of management, while obtaining a higher prof…
Applying Marketing Principles in the Field of Medical Services – An Ethical Challenge?
2013
Abstract Article propose in a synthetic and punctual manner, a debate fundamentally aimed on two research directions: to what extent the perception of doctors towards the use of marketing principles in the daily activities is in contradiction with their professional ethics and how it can be modelled the doctor-patient relationship by consistently integrating the principles of marketing in medical work. Authors propose a number of conclusions and suggestions from both scientific literature review and a qualitative research conducted on doctors in Bucharest dental offices. The research suggests that, fundamentally, doctors perceive their work as performing a medical act that exceeds the bound…
Spatial dispersion intensity measure of phase concentration distributions and its applications to quantitative characterization, distinguishing and c…
2008
A method of evaluation of spatial dispersion of structures is presented. A quantitative parameter measuring spatial dispersion is introduced. It is shown that this parameter indeed measures spatial dispersion. A classification of bubble flow structures based on values of this parameter is proposed. An example of application of the method to real flow structures is presented.
The socio-economic and communication challenges of spent nuclear fuel management in Finland
2010
Abstract One of the key factors behind the expansion of nuclear energy policy in Finland is nuclear waste management. As in many countries, nuclear waste management agencies are still struggling with the siting of intermediate and low level nuclear waste management facilities, in Finland Posiva, the nuclear waste company owned by the two nuclear power utilities Teollisuuden Voima (TVO) and Fortum Power and Heat (FPH), has been excavating a underground characterization facility since 2004 in the Olkiluoto site in the municipality of Eurajoki. The facility under construction is meant to be for a part of the final repository for disposal of spent nuclear fuel (SNF). The site selection process …