Search results for "fuel"

showing 10 items of 986 documents

Flexibility Services in a Mediterranean Small Island to Minimize Costs and Emissions Related to Electricity Production from Fossil Fuels

2020

In last years, the energy efficiency in non-interconnected islands became an important topic, since the electricity production is often based on diesel generators, thus contributing to the global warming. Italian government recently emitted two decrees to promote the introduction of renewable energy technologies in 21 non-interconnected islands, both for electrical and thermal uses. In this paper, the economic and environmental feasibility of the introduction of renewable energies in the island of Pantelleria was assessed adopting an optimization approach. Furthermore, the flexibility provided from the local desalination plant and the domestic water heaters was evaluated. The final demands …

business.industryNatural resource economics020209 energy020208 electrical & electronic engineeringFossil fuel02 engineering and technologymixed integer linear programmingDesalinationrenewable energyRenewable energyDemand responsedesalinationElectricity generationdemand responseGreenhouse gas0202 electrical engineering electronic engineering information engineeringEnvironmental scienceElectricitybusinessoptimizationEfficient energy use
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Supplying small islands with solar, wind and sea wave. An economic approach to find the best energy share

2019

The progressive installation of power plants based on renewable energy sources is improving the sustainability of the energy sector. Despite the availability of commercial solutions, most of the small islands in the world are nowadays affected by a deep dependence on fossil fuels. In this context, the paper investigates the feasibility of an energy mix composed by solar, wind and sea wave, suggesting a sizing approach based on the minimization of the Levelized Cost of Electricity of the entire energy mix. As case study, the Aeolian Islands are presented.

business.industryNatural resource economics020209 energyFossil fuelContext (language use)Energy mix02 engineering and technology010501 environmental sciences01 natural sciencesSizingRenewable energySustainability0202 electrical engineering electronic engineering information engineeringEnvironmental scienceAeolian processesbusinessCost of electricity by source0105 earth and related environmental sciencesOCEANS 2019 MTS/IEEE SEATTLE
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Perspectives and challenges of small scale plant microalgae cultivation. Evidences from Southern Italy

2020

Abstract In recent years, the cultivation of algae has achieved attention of scientists and practicioniers due to the great variety of products that can be obtained, among which biofuels. The aim of this work is twofold. The first is to perform a profitability analysis of food and biofuel production from microalgae, in a small-scale setting. The second is to assess the economic impact of algae production systems on the dairy farms potentially interested in Southern Italy. The analysis was performed using financial and economic indicators and considering two system management scenarios, namely single and collective. Our results confirm that current microalgae production technology favors bio…

business.industryNatural resource economics020209 energyfoodContext (language use)02 engineering and technology010501 environmental sciencescomputer.software_genre01 natural sciencesfarmers’ incomeProduct (business)Economic indicatorAgricultureSystems managementSettore AGR/01 - Economia Ed Estimo Rurale0202 electrical engineering electronic engineering information engineeringProduction (economics)biofuelprofitabilityProfitability indexEconomic impact analysisbusinessAgronomy and Crop Sciencecomputer0105 earth and related environmental sciences
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Bioenergy Production and Social Sustainability on Finnish Farms

2011

Problems related to energy production have become a significant social issue, also regarding rural areas. There is an apparent need to establish a model for sustainable energy production that would encompass economic, environmental and social sustainability (Elliott 2000). One important solution to reducing carbon dioxide emissions, as well as addressing the depletion of fossil fuel resources, lies in the renewable natural resources that exist in rural areas. However, sustainable and reasonable utilization of these resources is not simple and requires specific analysis of different production models (Mol 2007). Simultaneously, one must consider how these rural resources can be utilized and …

business.industryNatural resource economicsBioenergyFossil fuelSocial sustainabilityProduction (economics)BusinessRural areaSocial issuesNatural resourceAgricultural economicsRenewable energy
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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 …

business.industrySite selectionEnergy Engineering and Power TechnologyRadioactive wasteNuclear powerEnergy policySpent nuclear fuelStratified samplingNuclear Energy and EngineeringEnvironmental impact assessmentBusinessSafety Risk Reliability and QualityNuclear energy policyWaste Management and DisposalEnvironmental planningProgress in Nuclear Energy
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Queue Based Dynamic Charging Resource Allocation and Coordination for Heterogeneous Traffic in an Electrical Vehicle Charging Station

2021

Electric vehicle (EV) fast-charging stations (CSs) with innovative operation management strategies can help to meet the growing EV charging needs. Despite the short charging time associated with th...

business.product_categoryRenewable Energy Sustainability and the Environmentbusiness.industryComputer scienceEnergy Engineering and Power TechnologyDynamic chargingCharging stationFuel TechnologyNuclear Energy and EngineeringElectric vehicleResource allocationbusinessQueueComputer networkEnergy Sources, Part A: Recovery, Utilization, and Environmental Effects
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Design and Modeling of an Interleaving Boost Converter with Quasi-Saturated Inductors for Electric Vehicles

2020

This paper is focused on the analysis and modeling of DC-DC boost converters in interleaving configuration exploiting inductors in the quasi-saturation region. The converter is designed to optimize the power density by minimizing the size of the inductors. A simulation study for electric vehicle applications is conducted analyzing the effects of duty cycle and temperature variation on the ripple of the input current giving, moreover, information on the performances and dynamics of the converter for further implementation and optimizations.

business.product_categorynon-linear magneticsInterleavingComputer science020209 energysaturation020208 electrical & electronic engineeringhybrid vehicle02 engineering and technologyConvertersInductorinductorSettore ING-INF/01 - ElettronicaNon-linear magnetics inductor saturation power electronics interleaving boost converter fuel cell hybrid vehiclefuel cellpower electronicsDuty cyclePower electronicsElectric vehicleBoost converter0202 electrical engineering electronic engineering information engineeringElectronic engineeringbusinessHybrid vehicleinterleaving boost converter
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Sport and Quality of Life

2022

Negli ultimi trent’anni lo sport ha assunto un significato molto rilevante nella vita delle persone e, seppure con notevoli differenze, sia nei paesi a sviluppo economico avanzato, sia in quelli in via di sviluppo. A livello individuale, esso ha costituito un’area di investimento identitario quando ha assunto la forma di sport spettacolo del quale fruire, alimentando la pratica del tifo e il fandom o costituendo il modello di uno stile di vita vincente; ma anche quando ha assunto la forma di pratica del tempo libero attraverso la quale tenersi in forma, facendo crescere, in questo caso, la diffusione di una cultura della salute e del benessere. Si tratta di due modalità di approcciare al co…

but also when he took the form of free time practice through which to keep fit making grow in this case the diffusion of a culture of health and well-being. These are two ways of approaching the consumption of sports by spectators and actorIn the last thirty years sport has taken on a very significant meaning in people's lives and albeit with considerable differences both in advanced economic development countries and in developing countries. On an individual level it constituted an area of identity investment when it assumed the shape of “sport spectacle” to be enjoyed fueling the practice of cheering and fandom or constituting the model of a winning lifestyleand the two ways of use can be strongly related to the perception and assessment of the quality of life. The “semantic universes” which however connote sport and “free time sports” have often appeared polarized. Commercial sport and sports professionalism are intertwined with the institutions of economics politics and culture which above all stress its “spectacularity” in order to capture first and foremost the audience. But also the sport of leisure time is intertwined with the actions of the institutions of economics politics and culture with the difference that these stress above all its “healthy value” aimed at the “healthy and rational” investment of time in an activity which improves the quality of life in the short medium and long period. This polarization between the consumption of sport entertainment - commercial sport - and the consumption of sport as a leisure activity - sport for all - has become increasingly interconnected precisely because of the increased collective identity demand via sport. In other words we have witnessed the spread of shape of sports entertainment that recall the importance of sports for psychophysical well-being for integration and social participation for the reduction of social inequalities ethnic and cultural differences and in which the importance assumed was weakened in the show from agonism from competition from the physical confrontation between two contenders or two teams. A sport in which we act with competitors as well as against competitors. And on the other hand we have gradually witnessed the spectacularization of sports in our free time to the point that the sharing of the results obtained through the declination of a competitive spirit that presents itself as directed no longer against other contenders but against its own performance limits it has become the way in which each person makes part of his or her own life spectacular the one he often considers most authentic. The aim of this work is to describe how the intertwining between the commercial/professional dimension of the sports show and the playful/recreational dimension of sports practice are fueled by a demand and an offer of social identity that characterizes these two “semantic universes”.Settore SPS/07 - Sociologia Generale
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Microbial Fuel Cell with Ni–Co Cathode Powered with Yeast Wastewater

2018

Wastewater originating from the yeast industry is characterized by high concentration of pollutants that need to be reduced before the sludge can be applied, for instance, for fertilization of croplands. As a result of the special requirements associated with the characteristics of this production, huge amounts of wastewater are generated. A microbial fuel cell (MFC) forms a device that can apply wastewater as a fuel. MFC is capable of performing two functions at the same time: wastewater treatment and electricity production. The function of MFC is the production of electricity during bacterial digestion (wastewater treatment). This paper analyzes the possibility of applying yeast wastewate…

cathodeControl and OptimizationMicrobial fuel cellyeast wastewaterEnergy Engineering and Power TechnologySewage02 engineering and technology010501 environmental scienceslcsh:Technology01 natural sciencesmicrobial fuel cell; yeast wastewater; environmental engineering; renewable energy source; cathode; Ni–Co alloyIndustrial wastewater treatmentmicrobial fuel cellElectrical and Electronic EngineeringEngineering (miscellaneous)0105 earth and related environmental sciencesenvironmental engineeringlcsh:TRenewable Energy Sustainability and the Environmentbusiness.industryChemical oxygen demand021001 nanoscience & nanotechnologyPulp and paper industryWaste treatmentWastewaterEnvironmental scienceSewage treatmentNi–Co alloyrenewable energy source0210 nano-technologyEnergy sourcebusinessEnergy (miscellaneous)Energies
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Solid-state compatibility of Ca:LaNbO4 with perovskite cathodes: Evidences from X-ray microspectroscopy

2022

The solid-state compatibility between calcium-doped lanthanum niobate and three perovskite cathode materials was investigated using two X-ray microbeam techniques, micro X-ray fluorescence and micro X-ray absorption spectroscopy. The cathode powders (lanthanum strontium ferrite, either cobalt or copper-doped, and lanthanum strontium cobaltite) in contact with the dense electrolyte pellet were annealed at 1150 degrees C for 12-144 h to simulate the effect of thermal stresses due to fabrication and long-term operation. As a result, several interdiffusion phenomena were then observed on the bilayer cross-sections: in particular, the chemical state and coordination environment of calcium, iron,…

cathodeMaterials scienceAbsorption spectroscopyGeneral Chemical EngineeringNiobiumchemistry.chemical_elementPositive ionelectrolyteinterfaceschemistry.chemical_compoundchemical compatibilityLanthanumscheelitesolid oxide fuel cellElectrochemistryLanthanumx-ray microspectroscopySOFClanthanum strontium cobaltiteperovskitePerovskite (structure)Compatibility (geochemistry)CobaltiteChemical statechemistryChemical engineeringNiobium compoundStrontiumSettore CHIM/03 - Chimica Generale E InorganicaLaNbO4X ray absorption spectroscopylanthanum strontium ferriteCalciumCobaltlanthanum niobate
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