Wind energy is the fastest growing alternate source of energy in the world since its purely economic potential is complemented by its great positive environmental impact. The wind turbine, whether it may be a Horizontal-Axis Wind Turbine (HAWT) or a Vertical-Axis Wind Turbine (VAWT), offers a practical way to convert the wind energy into electrical or mechanical energy. Although this book focuses on the aerodynamic design and performance of VAWTs based on the Darrieus concept, it also discusses the comparison between HAWTs and VAWTs, future trends in design and the inherent socio-economic and environmental friendly aspects of wind energy as an alternate source of energy.

Wind turbine design with emphasis on Darrieus concept Ion Paraschivoiu

conferencia sobre "Particle Image Velocimetry" de les 13:00-14:00 a la Sala de Juntes de l'FNB impartida pel professor Peter Bueken da l'Antwerp Maritime Acedemy (Belgica)

Particle Image Velocimetry

Fuel reforming in internal combustion engines

The rapid technology evolution and the future challenges demand us to adopt increasingly cutting-edge and up-to-date technological tools. In this perspective, Blockchain technology is revolutionizing countless areas of our daily lives. In this paper, we present a non exhaustive list on the state of the art about Blockchain technology in multiple application fields, both from an industry and business perspective and from a consumer one. We will also present a dedicated focus on the frictions between distributed ledgers and data protection regulations crossing all these areas.

Blockchain, State-of-the-Art and Future Trends

Artificial neural networks modelling of engine-out responses for a light-duty diesel engine fuelled with biodiesel blends

This work analyses the link between the aspect ratio of a vertical-axis straight-bladed (H-Rotor) wind turbine and its performance (power coefficient). The aspect ratio of this particular wind turbine is defined as the ratio between blade length and rotor radius. Since the aspect ratio variations of a vertical-axis wind turbine cause Reynolds number variations, any changes in the power coefficient can also be studied to derive how aspect ratio variations affect turbine performance. Using a calculation code based on the Multiple Stream Tube Model, symmetrical straight-bladed wind turbine performance was evaluated as aspect ratio varied. This numerical analysis highlighted how turbine performance is strongly influenced by the Reynolds number of the rotor blade. From a geometrical point of view, as aspect ratio falls, the Reynolds number rises which improves wind turbine performance.

/pdf/design-of-a-vertical-axis-wind-turbine-how-the-aspect-ratio-1f1pku5w1u.pdf

Design of a vertical-axis wind turbine: how the aspect ratio affects the turbine’s performance

Water Injection in IC - SI Engines to Control Detonation and to Reduce Pollutant Emissions

The contribution of renewable energies to the reduction of the impact of fossil fuels sources and especially energy supply in remote areas has occupied a role more and more important during last decades The estimation of renewable power plants performances by means of deterministic models is usually limited by the innate variability of the energy resources The accuracy of energy production forecasting results may be inadequate An accurate feasibility analysis requires taking into account the randomness of the primary resource operations and the effect of component failures in the energy production process This paper treats a novel approach to the estimation of energy production in a real photovoltaic power plant by means of dynamic reliability analysis based on Stochastic Hybrid Fault Tree Automaton (SHyFTA) The comparison between real data, deterministic model and SHyFTA model confirm how the latter better estimate energy production than deterministic model

https://www.mdpi.com/1996-1073/11/2/306/pdf

Sebastian Brusca

Papers

Design of a vertical-axis wind turbine: how the aspect ratio affects the turbine’s performance

Water Injection in IC - SI Engines to Control Detonation and to Reduce Pollutant Emissions

Dynamic performance evaluation of photovoltaic power plant by stochastic hybrid fault tree automaton model

CFD modeling of a ducted Savonius wind turbine for the evaluation of the blockage effects on rotor performance

A new design methodology to predict wind farm energy production by means of a spiking neural network-based system