BackExaminar Artículos por departamento (eus.) "Ingeniaritza nuklearra eta jariakinen mekanika"
Now showing items 1-20 of 78
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5 MW Wind Turbine Annual Energy Production Improvement by Flow Control Devices
; ; ; ; ; López Guede, José Manuel
; Sancho Saiz, Javier (MDPI, 2018-11-06)
Several flow control devices have been studied in recent years. Majority of them were designed firstly for aeronautical purposes. At present many research is aimed to introduce these devices in wind turbines (WTs) in order ... -
A Battery Management System with EIS Monitoring of Life Expectancy for Lead–Acid Batteries
Olarte, Javier; Martínez de Ilarduya Martínez de San Vicente, Jaione; ; Ferret, Raquel; ; López Guede, José Manuel (MDPI, 2021-05-21)
Abstract This work presents a battery management system for lead–acid batteries that integrates a battery-block (12 V) sensor that allows the online monitoring of a cell’s temperature, voltage, and impedance spectra. The ... -
A Context-Aware Oil Debris-Based Health Indicator for Wind Turbine Gearbox Condition Monitoring
(MDPI, 2019-09-02)One of the greatest challenges of optimising the correct operation of wind turbines is detecting the health status of their core components, such as gearboxes in particular. Gearbox monitoring is a widely studied topic in ... -
A Parametric Study of Trailing Edge Flap Implementation on Three Different Airfoils Through an Artificial Neuronal Network
Rodríguez Eguía, Igor; ; ; Blanco Ilzarbe, Jesús María; ; Sáenz Aguirre, Aitor (MDPI, 2020-05-18)
Trailing edge flaps (TEFs) are high-lift devices that generate changes in the lift and drag coefficients of an airfoil. A large number of 2D simulations are performed in this study, in order to measure these changes in ... -
Accuracy of the Cell-Set Model on a Single Vane-Type Vortex Generator in Negligible Streamwise Pressure Gradient Flow with RANS and LES
; ; ; ; Sancho Saiz, Javier (MDPI, 2020-12-02)
Passive flow control devices are included in the design of wind turbine blades in order to obtain better performance and reduce loads without consuming any external energy. Vortex Generators are one of the most popular ... -
Aerodynamic Performance of Vertical-Axis Wind Turbines
(MDPI, 2023-07-05)The nonstationary separated incompressible flows around Darrieus and Savonius rotors of vertical-axis wind turbines were investigated through computational simulation using the Reynolds averaged Navier–Stokes equations and ... -
Analysis of Alpha Activity Levels and Dependence on Meteorological Factors over a Complex Terrain in Northern Iberian Peninsula (2014–2018)
; Legarda Ibañez, Fernando; Alegría Gutiérrez, Natalia (MDPI, 2020-10-29)
Alpha ambient concentrations in ground-level air were measured weekly in Bilbao (northern Spain) by collecting aerosols in filters between 2014 and 2018. Over this period, the alpha activity concentrations in the aerosol’s ... -
Analysis of the comparison of in situ measurements made on biological shielding of the BR3 nuclear reactor
(Springer, 2022-05)INSIDER (Improved Nuclear SIte characterization for waste minimization in D&D operations under constrained EnviRonment) was a European project funded under the H2020-EURATOM programme and launched in June 2017. The project ... -
Artificial-intelligence-model to optimize biocide dosing in seawater-cooled industrial process applications considering environmental, technical, energetic, and economic aspects
; ; ; ; Gómez Solaeche, Miguel Ángel (Taylor & Francis, 2024-06-10)
[EN] This research introduces an Artificial Intelligence (AI) based model designed to concurrently optimize energy supply management, biocide dosing, and maintenance scheduling for heat exchangers. This optimization ... -
Automatic Identification Algorithm of Equivalent Electrochemical Circuit Based on Electroscopic Impedance Data for a Lead Acid Battery
Olarte, Javier; Martínez de Ilarduya Martínez de San Vicente, Jaione; ; Ferret, Raquel; ; López Guede, José Manuel (MDPI, 2021-06-06)
Obtaining tools to analyze and predict the performance of batteries is a non-trivial challenge because it involves non-destructive evaluation procedures. At the research level, the development of sensors to allow cell-level ... -
Battery Sizing Optimization in Power Smoothing Applications
(MDPI, 2022-01-19)The main objective of this work was to determine the worth of installing an electrical battery in order to reduce peak power consumption. The importance of this question resides in the expensive terms of energy bills when ... -
Calibration of Reanalysis Data against Wind Measurements for Energy Production Estimation of Building Integrated Savonius-Type Wind Turbine
(MDPI, 2020-12-17)In this work, a cost-effective wind resource method specifically developed for the ROSEO-BIWT (Building Integrated Wind Turbine) and other Building Integrated Wind Turbines is presented. It predicts the wind speed and ... -
Catalyst Deactivation And Regeneration Processes In Biogas Tri-Reforming Process. The Effect Of Hydrogen Sulfide Addition
Izquierdo Ereño, Urko; ; ; ; Barrio Cagigal, Victoria Laura ; Cambra Ibáñez, José Francisco ; (MDPI AG, 2018-01-09)
This work studies Ni-based catalyst deactivation and regeneration processes in the presence of H2S under a biogas tri-reforming process for hydrogen production, which is an energy vector of great interest. 25 ppm of hydrogen ... -
Cell-Set Modelling for a Microtab Implementation on a DU91W(2)250 Airfoil
(MDPI, 2020-12-20)Microtabs (MTs) are a regularly used flow control device in terms of wind turbine optimization. The present study introduces the application of the novel cell-set model for an MT implementation on a DU91W(2)250 airfoil. ... -
Classification and categorization of the constrained environments in nuclear/radiological installations under decommissioning and dismantling processes
(Pergamon-Elsevier, 2020-06)INSIDER is an EU Horizon 2020 research project, within the topic NFRP-7 of the EURATOM programme, that aims to develop and validate a new and improved integrated characterization methodology and strategy for the nuclear ... -
CNN-based flow control device modelling on aerodynamic airfoils
(Nature, 2022-06-17)Wind energy has become an important source of electricity generation, with the aim of achieving a cleaner and more sustainable energy model. However, wind turbine performance improvement is required to compete with ... -
Combining random forests and physics-based models to forecast the electricity generated by ocean waves: A case study of the Mutriku wave farm
; ; Sáenz Aguirre, Jon; Ulazia Manterola, Alain (Pergamon-Elsevier, 2019-10-01)
This paper combines random forests with physics-based models to forecast the electricity output of the Mutriku wave farm on the Bay of Biscay. The period analysed was 2014-2016, and the forecast horizon was 24 h in 4-h ... -
Computational Characterization of a Rectangular Vortex Generator on a Flat Plate for Different Vane Heights and Angles
Ibarra Udaeta, Iosu; ; ; ; Sancho Saiz, Javier (MDPI, 2019-03-01)
Vortex generators (VG) are passive flow control devices used for avoiding or delaying the separation of the boundary layer by bringing momentum from the higher layers of the fluid towards the surface. The Vortex generator ... -
Computational Methods for Modelling and Optimization of Flow Control Devices
Ballesteros Coll, Alejandro; ; ; ; López Guede, José Manuel (MDPI, 2020-07-19)
Over the last few years, the advances in size and weight for wind turbines have led to the development of flow control devices. The current work presents an innovative method to model flow control devices based on a cell-set ... -
Computational Modeling of Gurney Flaps and Microtabs by POD Method
(MDPI, 2018-08)Gurney flaps (GFs) and microtabs (MTs) are two of the most frequently used passive flow control devices on wind turbines. They are small tabs situated close to the airfoil trailing edge and normal to the surface. A study ...