Results 81 to 90 of about 20,018 (249)

Assessment of the effects of microwave‐produced biodiesel blends on electric generator performance and emissions

Environmental Progress &Sustainable Energy, EarlyView.
Abstract Biodiesels are emerging as alternatives to diesel fuel. However, to be a feasible solution, biodiesels must meet strict criteria including high efficiency and minimal environmental impact. The current study focuses on evaluating ethyl ester biodiesel and its blends with diesel fuel to assess their potential.
Ilham Yahya, Fakher Hamdi, Mehrez Gassoumi, Tommaso Giannoni, Andrea Nicolini, Hakan Serhad Soyhan, Ridha Ennetta   +6 more
wiley   +1 more source

Genetic Algorithm‐Driven Analysis of Gravitational Water Vortex Power Plant Runner Performance: A Comparative Study Integrating Experimental and Computational Fluid Dynamics

Energy Science &Engineering, EarlyView.
This study integrates genetic algorithm optimization, CFD simulation, and experimental validation to identify the optimal runner geometry for a gravitational water vortex turbine. The combined approach enhances vortex stability and improves energy conversion efficiency, demonstrating strong agreement between predicted and measured performance ...
Zakaria. A. Mwakitwange, Adam Faraji
wiley   +1 more source

Use of Hydrogen Energy Storage to Stabilize Solar Power Output With an Energy Efficiency Analysis for European Union Member Countries

Energy Science &Engineering, EarlyView.
Photovoltaic solar power production can be stabilized using hydrogen energy storage. Gaseous hydrogen is produced, compressed, stored, and consumed in fuel cells to provide a constant power output. ABSTRACT Seasonal energy storage as compressed hydrogen offers a potential solution to balance the power grid as intermittent renewable energy sources are ...
Jure Voglar, Blaž Likozar
wiley   +1 more source

Techno-economic optimization of a hybrid heliostat-based CSP-hydropower-biopower system under hydro-limited conditions using Harris Hawks optimization

Scientific Reports
Hydropower-dependent electricity systems are increasingly vulnerable to climate-driven hydrological variability, which threatens supply reliability in water-limited regions.
Ahmad Bilal Ahmadullah, Ahmad Shah Irshad, Ziaul Haq Doost, Hameed Ahmad Rahel, Azeez Qudah, Niaz Muhammad Muslih, Muhammad Adil Abbasi, Zainullah Serat, Tomonobu Senjyu   +8 more
doaj   +1 more source

A comprehensive assessment of hydropower in the Balkan region: from technical potential to integrated spatial planning

Energy Nexus
Hydropower remains the most reliable renewable energy source, with the ability to store and generate electricity on demand. Over the past three decades, the Balkan region has been significantly affected by climate change, manifested in more extreme ...
Tina Dašić, Ružica Stričević, Branka Nakomčić-Smaragdakis, Goran Sekulić, Damir Šljivac, Jovan Todorović, Anica Milanović, Dimitar Kisliakov, Stevcho Mitovski, Frosina Panovska Georgievska, Ljupcho Petkovski, Epari Ritesh Patro   +11 more
doaj   +1 more source

Optimal Lithium‐Ion Battery—Supercapacitor Energy Storage System Capacity for Off‐Grid Intermittent Renewable Energy Mini‐Grids

Energy Science &Engineering, EarlyView.
Deployment of an aging‐based controller during designing of optimal lithium‐ion battery—supercapacitor (LB‐Sc) hybrid energy storage system (HESS) capacity, in off‐grid IREMGs, improves performance of the LB and reduces its aging rate. Also, annualised cost of the LB‐Sc HESS improves by 33.15% in relation to optimal LB SESS.
Isaac Gwayi, Cuthbert Z. M. Kimambo, Sarah Paul Ayeng'o   +2 more
wiley   +1 more source

Ambiguity‐Aware Receding‐Horizon Optimization of Wind‐Hybrid Energy Storage Systems Using Type‐3 Fuzzy Modeling for Multimarket Participation

Energy Science &Engineering, EarlyView.
A Type‐3 fuzzy ambiguity encoder converts rolling wind, price, reserve‐activation, and confidence features into central estimates and nested uncertainty bounds. These parameters are updated within a receding‐horizon MILP/MIQP that coordinates wind, battery, and supercapacitor capacity across day‐ahead and ancillary‐service markets.
Shurong Yan, Manwen Tian, Didar Yedilkhan, Nurkhat Zhakiyev, Aigul Adamova, Ardashir Mohammadzadeh   +5 more
wiley   +1 more source

Towards Water, Food and Energy Security: The Global Challenges and Possible Solutions for a Holistic Vision of Sustainability

Irrigation and Drainage, EarlyView.
ABSTRACT This invited paper gives an overview of the challenges the world is facing and offers a possible solution for water and food security within the holistic integrated concept of the water–energy–food (WEF) nexus. The paper summarizes the experience the author gained through working on various research projects at national and international ...
Ragab Ragab
wiley   +1 more source

Low‐Intensity Precipitation Dominates Peninsular Spain (1961–2022)

International Journal of Climatology, EarlyView.
Spatial analysis across Spain shows a shift in precipitation regimes (1961–2022) toward more frequent low‐intensity precipitation and reduced high‐intensity events, with localised increases in heavy precipitation along some coastal areas. This redistribution—captured through changes in precipitation frequency (RF) and volumetric contribution (RC ...
Ahmed M. El Kenawy, Santiago Beguería, Fernando Domínguez‐Castro, Amar Halifa‐Marín, Maria Adell‐Michavila, Borja Latorre, Magí Franquesa, Islam M. Gaber, Islam M. Hamdi, Sergio M. Vicente‐Serrano   +9 more
wiley   +1 more source

Satellite and Reanalysis Dataset Dependence of ETCCDI Extreme Precipitation Trends in Paraná, Southern Brazil

International Journal of Climatology, EarlyView.
Extreme precipitation trends detected in Paraná, Southern Brazil (1983–2024), are strongly conditioned by the dataset used, with reanalyses indicating coherent inland drying and longer dry spells, observations retaining stronger mesoscale heterogeneity, and satellite products often showing declines in short‐duration extremes. Monthly diagnostics reveal
Paulo Miguel de Bodas Terassi, Jakeline Baratto, Vitor Hugo Rosa Biffi   +2 more
wiley   +1 more source