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Energies, Volume 18, Issue 8

2025 April-2 - 271 articles

Cover Story: This article demonstrates the impact of blending diesel fuel with tire pyrolysis oil (TPO) on rheological properties and compliance with legal fuel requirements. Tests were conducted on blends of normative D100 diesel oil with 5, 7, 10, 15, and 20% m/m TPO. Reference measurements were also performed for pure diesel and pure pyrolysis oil. The kinematic viscosity, density, dynamic viscosity, viscosity index, pour point, cloud point, and cold filter plugging point were determined. Densities were measured at 15–100 °C and viscosities at 20, 40, and 100 °C. Approximating models were built for all analyzed parameters and can be used in future studies. Results were compared with limit values specified in selected standards and regulations. Blends with 0–20% TPO met marine distillate fuel standards, while blends with up to 7% TPO complied with Polish diesel fuel regulations. View this paper
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Articles (271)

  • Review
  • Open Access
7 Citations
2,927 Views
40 Pages

Sustainable Electric Micromobility Through Integrated Power Electronic Systems and Control Strategies

  • Mohamed Krichi,
  • Abdullah M. Noman,
  • Mhamed Fannakh,
  • Tarik Raffak and
  • Zeyad A. Haidar

21 April 2025

A comprehensive roadmap for advancing Electric Micromobility (EMM) systems addressing the fragmented and scarce information available in the field is defined as a transformative solution for urban transportation, targeting short-distance trips with c...

  • Article
  • Open Access
3 Citations
1,136 Views
18 Pages

21 April 2025

As a key component of the power system, the good or bad conditions of synchronous machines will directly affect the stable supply of electric energy. The inter-turn short fault of the stator is one of the main dangers to the synchronous machine and i...

  • Article
  • Open Access
947 Views
23 Pages

21 April 2025

This work focuses on the problem of optimal reactive power adjustment (ORPA) in electric power systems (EPSs) by implementing the Mean-Variance Mapping Algorithm (MVMO) focusing on the control of static devices such as taps in transformers and static...

  • Review
  • Open Access
9 Citations
6,133 Views
33 Pages

Silicon Carbide Converter Design: A Review

  • Asif Rasul,
  • Rita Teixeira and
  • José Baptista

21 April 2025

To achieve lower switching losses and higher frequency capabilities in converter design, researchers worldwide have been investigating Silicon carbide (SiC) modules and MOSFETs. In power electronics, wide bandgap devices such as Silicon carbide are e...

  • Article
  • Open Access
2,021 Views
29 Pages

21 April 2025

Energy generated from wind (in the form of wind farms (WFs)) is expected to help alleviate rising energy demand in Saudi Arabia, driven by industrial development and population growth. However, before implementing wind farms, conducting a comprehensi...

  • Article
  • Open Access
2 Citations
1,628 Views
22 Pages

21 April 2025

The transportation of wind turbine blades in remote wind farm areas poses significant safety risks to both personnel and infrastructure. These risks arise from collision hazards, complex terrain, and the difficulty of real-time monitoring under adver...

  • Article
  • Open Access
2 Citations
1,242 Views
18 Pages

21 April 2025

In this study, straight and looped heat pipes were designed and manufactured, and their performance in cooling cylindrical lithium-ion batteries known as standard 18,650 batteries on the market was investigated. Pure water, methanol, and thermasolv I...

  • Feature Paper
  • Article
  • Open Access
1 Citations
1,100 Views
22 Pages

An FMEA Assessment of an HTR-Based Hydrogen Production Plant

  • Lorenzo Damiani,
  • Francesco Novarini and
  • Guglielmo Lomonaco

21 April 2025

The topic of hydrogen as an energy vector is widely discussed in the present literature, being one of the crucial technologies aimed at human carbon footprint reduction. There are different hydrogen production methods. In particular, this paper focus...

  • Article
  • Open Access
1 Citations
1,285 Views
20 Pages

Molecular and Microstructural Engineering Strategies for High-Performance Polypropylene Insulation Materials

  • Zhaoliang Xing,
  • Hao Ge,
  • Deshen Li,
  • Shaowei Guo,
  • Bo Yang,
  • Chunjia Gao,
  • Bo Qi and
  • Jianhong Hao

21 April 2025

This study develops a high-performance polypropylene (PP) substrate platform by optimizing micro/macrostructures and introduces an efficient catalyst. Key findings include: (1) microstructural analysis identifies ash content impurities (>20 ppm) a...

  • Article
  • Open Access
3 Citations
1,444 Views
17 Pages

21 April 2025

To fully utilize the reactive power resources of distributed photovoltaic (PV) systems, this study proposes a coordinated var-voltage control strategy for the main distribution network, incorporating the reactive power regulation capability of distri...

  • Article
  • Open Access
2 Citations
1,922 Views
21 Pages

21 April 2025

With the continuous expansion of distributed photovoltaic (PV) integration, the hosting capacity of distribution networks has become a critical issue in power system planning and operation. Under varying meteorological and load fluctuation conditions...

  • Article
  • Open Access
3 Citations
1,658 Views
19 Pages

21 April 2025

Standalone wind–solar–diesel–storage microgrids serve as a crucial solution for achieving energy self-sufficiency in remote and off-grid areas, such as rural regions and islands, where conventional power grids are unavailable. Addre...

  • Article
  • Open Access
1 Citations
880 Views
14 Pages

Enhancing Thermal Conductivity of SiC Matrix Pellets for Accident-Tolerant Fuel via Atomic Layer Deposition of Al2O3 Coating

  • Yumeng Zhao,
  • Wenqing Wang,
  • Jiquan Wang,
  • Xiao Liu,
  • Yu Li,
  • Zongshu Li,
  • Rong Chen and
  • Wei Liu

21 April 2025

This study investigates the enhancement of thermal conductivity in silicon carbide (SiC) matrix pellets for accident-tolerant fuels via atomic layer deposition (ALD) of alumina (Al2O3) coatings. Pressure-holding ALD protocols ensured precursor satura...

  • Article
  • Open Access
3 Citations
5,492 Views
18 Pages

Barriers to Balcony Solar and Plug-In Distributed Energy Resources in the United States

  • Daniel L. Gerber,
  • Achim Ginsberg-Klemmt,
  • Lyn Stoler,
  • Jordan Shackelford and
  • Alan Meier

21 April 2025

Plug-in distributed energy resources (DERs), such as balcony solar, backfeed power to the home through a standard plug. These systems may represent the future of residential solar and storage, particularly as recent net metering policies have reduced...

  • Article
  • Open Access
2 Citations
1,647 Views
20 Pages

Comparable Study on Celadon Production Fueled by Methanol and Liquefied Petroleum Gas at Industry Scale

  • Yihong Song,
  • Shangbo Han,
  • Teng Hu,
  • Huajie Lyu,
  • Nuo Chen,
  • Xiao Zhang,
  • Saisai Lin,
  • Chenghang Zheng,
  • Peng Liu and
  • Xiang Gao

21 April 2025

As a major contributor to industrial energy consumption and carbon emissions, the kiln industry faces increasing pressure to adopt cleaner energy sources. This study investigated the combustion characteristics, redox processes in celadon firing, prod...

  • Feature Paper
  • Article
  • Open Access
2 Citations
2,805 Views
27 Pages

21 April 2025

Energy storage technology is crucial for promoting the replacement of traditional energy with renewable energy and regulating the energy supply–demand relationship. This paper investigates a triplex-tube thermal energy unit storage to solve the...

  • Article
  • Open Access
2,055 Views
18 Pages

21 April 2025

This article presents the simulation results of synchronization of a permanent magnet synchronous generator (PMSG) dedicated for a hydroelectric plant without power converter devices. The proposed machine design allows to connect a generator to the g...

  • Review
  • Open Access
2 Citations
3,836 Views
35 Pages

Green Synthesis of Core/Shell Phase Change Materials: Applications in Industry and Energy Sectors

  • Aikaterini Feizatidou,
  • Vassilios Binas and
  • Ioannis A. Kartsonakis

21 April 2025

Engineered substances that demonstrate superior properties compared with conventional materials are called advanced materials. Thermal energy storage systems based on phase change materials (PCMs) offer an eco-friendly solution to reduce fuel and ele...

  • Article
  • Open Access
7 Citations
1,667 Views
24 Pages

Assessment of the Energy Security of EU Countries in Light of the Expansion of Renewable Energy Sources

  • Aleksandra Kuzior,
  • Yevhen Kovalenko,
  • Inna Tiutiunyk and
  • Larysa Hrytsenko

21 April 2025

In response to disturbances in the European energy market due to Russia’s invasion of Ukraine, Europe had to strengthen its strategic resilience and reduce reliance on Russian gas imports by conserving energy, producing clean energy, and divers...

  • Review
  • Open Access
2 Citations
3,809 Views
19 Pages

21 April 2025

This paper investigates the application of utility theory in decision-making related to energy use behavior and management practice in the energy sector. By conducting a systematic literature review, this study aims to understand the theoretical and...

  • Article
  • Open Access
2 Citations
2,535 Views
15 Pages

Comparative Analysis of Energy Efficiency in High-Voltage Ozone Generators: Resonant Versus Non-Resonant Systems

  • Tongpian Prombud,
  • Ekkapol Anusurain,
  • Chainarong Wisassakwichai and
  • Choosak Kamonkhantithorn

21 April 2025

The effective generation of ozone by high-voltage systems is essential for several industrial and environmental purposes. This paper performs a thorough comparative examination of energy efficiency in ozone generators, emphasizing resonant and non-re...

  • Review
  • Open Access
14 Citations
9,962 Views
24 Pages

Research Progress of Thermoelectric Materials—A Review

  • Jun Wang,
  • Yonggao Yin,
  • Chunwen Che and
  • Mengying Cui

21 April 2025

Thermoelectric materials are functional materials that directly convert thermal energy into electrical energy or vice versa, and due to their inherent properties, they hold significant potential in the field of energy conversion. In this review, we e...

  • Article
  • Open Access
2 Citations
1,219 Views
17 Pages

Accuracy Performance of Open-Core Inductive Voltage Transformers at Higher Frequencies

  • Josip Ivankić,
  • Igor Žiger,
  • Bruno Jurišić and
  • Dubravko Franković

20 April 2025

The new revision of the main instrument transformer standard, IEC 61869-1:2023, premiered requirements for the performance of instrument transformers in terms of transfer accuracy at higher frequencies. Five accuracy class extensions were introduced...

  • Review
  • Open Access
6 Citations
4,572 Views
33 Pages

Concentrated Solar Thermal Power Technology and Its Thermal Applications

  • Chunchao Wu,
  • Yonghong Zhao,
  • Wulin Li,
  • Jianjun Fan,
  • Haixiang Xu,
  • Zhongqian Ling,
  • Dingkun Yuan and
  • Xianyang Zeng

20 April 2025

The industrial sector accounts for approximately 65% of global energy consumption, with projections indicating a steady annual increase of 1.2% in energy demand. In the context of growing concerns about climate change and the need for sustainable ene...

  • Review
  • Open Access
17 Citations
5,920 Views
64 Pages

Mechanisms and Modelling of Effects on the Degradation Processes of a Proton Exchange Membrane (PEM) Fuel Cell: A Comprehensive Review

  • Krystof Foniok,
  • Lubomira Drozdova,
  • Lukas Prokop,
  • Filip Krupa,
  • Pavel Kedron and
  • Vojtech Blazek

20 April 2025

Proton Exchange Membrane Fuel Cells (PEMFCs), recognised for their high efficiency and zero emissions, represent a promising solution for automotive applications. Despite their potential, durability challenges under real-world automotive operating co...

  • Article
  • Open Access
2 Citations
1,076 Views
30 Pages

20 April 2025

Methanol has garnered attention as a promising alternative fuel for marine engines due to its high octane number and superior knock resistance. However, methanol-fueled engines face cold-start challenges under low-temperature conditions. Laser igniti...

  • Article
  • Open Access
2 Citations
856 Views
42 Pages

Gossip Coordination Mechanism for Decentralised Learning

  • Philippe Glass and
  • Giovanna Di Marzo Serugendo

20 April 2025

In smart grids, renewable energies play a predominant role, but they produce more and more data, which are volatile by nature. As a result, predicting electrical behaviours has become a real challenge and requires solutions that involve more all micr...

  • Article
  • Open Access
896 Views
14 Pages

Optimization of Injection Strategy for CH4/Diesel Dual-Fuel Engine Using Response Surface Methodology

  • Sarah Ouchikh,
  • Mohand Said Lounici,
  • Khaled Loubar and
  • Mohand Tazerout

20 April 2025

Dual-fuel combustion technology allows for lower emissions of particulate matter (PM) and nitrogen oxide (NOx). However, under low load conditions, this mode of combustion has large amounts of emissions of carbon monoxide (CO) and unburned hydrocarbo...

  • Article
  • Open Access
2 Citations
1,203 Views
16 Pages

19 April 2025

Battery pack casings with a total energy of 12.432 kWh were designed using two types of materials: aluminum alloy and carbon fiber reinforced composite filament based on polyphthalamide or high-performance/high-temperature nylon (PPA-CF). The effecti...

  • Article
  • Open Access
1 Citations
1,417 Views
32 Pages

Evaluation of Environmental Factors Influencing Photovoltaic System Efficiency Under Real-World Conditions

  • Krzysztof Pytel,
  • Wiktor Hudy,
  • Roman Filipek,
  • Malgorzata Piaskowska-Silarska,
  • Jana Depešová,
  • Robert Sito,
  • Ewa Janiszewska,
  • Izabela Sieradzka and
  • Krzysztof Sulkowski

19 April 2025

The study addresses the impact of selected environmental factors on the energy production of photovoltaic systems under real outdoor conditions, with particular emphasis on the application of evolutionary computation techniques. The experiment was ca...

  • Article
  • Open Access
3 Citations
805 Views
16 Pages

Adaptive Gain-Based Double-Loop Full-Order Terminal Sliding Mode Control of a Surface-Mounted PMSM System

  • Minghao Zhou,
  • Xueran Fei,
  • Wei Xu,
  • William Cai,
  • Ying Xie and
  • Zizhen Qiu

19 April 2025

This article proposes a new adaptive gain, full-order terminal sliding mode control algorithm for the speed regulation of a surface-mounted permanent magnet synchronous motor (SPMSM) control system. To deal with the mismatched uncertainties in the do...

  • Article
  • Open Access
2 Citations
1,377 Views
21 Pages

19 April 2025

This paper proposes a novel hybrid metaheuristic algorithm (MHA) for maximum power point tracking (MPPT), integrating particle swarm optimization (PSO), the differential evolution algorithm (DEA), and the grey wolf optimizer (GWO). The proposed metho...

  • Article
  • Open Access
1 Citations
810 Views
20 Pages

19 April 2025

Due to the increasing availability of new energy sources, the adaptability of traditional fault analysis and calculation methods has declined when applied to distribution networks. The reason is that the traditional ideal voltage source model cannot...

  • Review
  • Open Access
5 Citations
4,538 Views
35 Pages

Advances on Deflagration to Detonation Transition Methods in Pulse Detonation Engines

  • Zhiwu Wang,
  • Weifeng Qin,
  • Lisi Wei,
  • Zixu Zhang and
  • Yuxiang Hui

19 April 2025

Pulse detonation engines (PDEs) have become a transformative technology in the field of aerospace propulsion due to the high thermal efficiency of detonation combustion. However, initiating detonation waves within a limited space and time is key to t...

  • Review
  • Open Access
24 Citations
4,995 Views
28 Pages

Advancements and Challenges in Photovoltaic Power Forecasting: A Comprehensive Review

  • Paolo Di Leo,
  • Alessandro Ciocia,
  • Gabriele Malgaroli and
  • Filippo Spertino

19 April 2025

The fast growth of photovoltaic (PV) power generation requires dependable forecasting methods to support efficient integration of solar energy into power systems. This study conducts an up-to-date, systematized analysis of different models and method...

  • Feature Paper
  • Article
  • Open Access
4 Citations
1,209 Views
23 Pages

19 April 2025

Battery longevity and hydrogen consumption efficiency are primary optimization goals for EMS in high-performance fuel cell hybrid electric vehicles (FCHEVs). This article provides an overview of an FCHEV powertrain and a hierarchical control scheme t...

  • Article
  • Open Access
14 Citations
1,910 Views
20 Pages

18 April 2025

The economic assessment of CO2 emissions from fossil fuels is gaining importance in the context of sustainable development. Climate change, driven by excessive greenhouse gas emissions, poses a significant threat to humanity, requiring an integrated...

  • Article
  • Open Access
1 Citations
928 Views
14 Pages

18 April 2025

Lithium-ion batteries (LIBs) are widely utilized in consumer electronics, electric vehicles, and large-scale energy storage systems due to their high energy density and long lifespan. Accurately estimating the state of health (SOH) and predicting the...

  • Article
  • Open Access
1,206 Views
16 Pages

Knowledge Graph-Augmented ERNIE-CNN Method for Risk Assessment in Secondary Power System Operations

  • Xiang Huang,
  • Ping Li,
  • Ye Wang,
  • Xuchao Ren,
  • Zhenbing Zhao and
  • Gang Li

18 April 2025

With the increasing complexity of modern power systems, traditional risk assessment methods relying on expert experience and historical data face challenges in accuracy and adaptability. This study proposes a knowledge graph-augmented ERNIE-CNN metho...

  • Article
  • Open Access
6 Citations
1,316 Views
28 Pages

18 April 2025

This paper presents a study on the development of a hybrid modeling framework for the optimal operation of microgrids based on renewable energy resources. Accurate prediction of both renewable energy generation and consumer demand is crucial for the...

  • Article
  • Open Access
1,140 Views
29 Pages

Research on Energy Management Strategies for Fuel Cell Hybrid Vehicles Based on Time Classification

  • Lihua Ye,
  • Zixing Zhang,
  • Qinglong Zhao,
  • Xu Zhao,
  • Zhou He and
  • Aiping Shi

18 April 2025

In order to minimize the carbon emission and energy consumption of fuel cell hybrid vehicles and, at the same time, solve the problem of low accuracy of working condition identification in the working condition identification strategy, this paper pro...

  • Article
  • Open Access
1 Citations
818 Views
34 Pages

Optimizing Photovoltaic Generation Placement and Sizing Using Evolutionary Strategies Under Spatial Constraints

  • Carlos Henrique Silva,
  • Saymon Fonseca Santos Mendes,
  • Lina P. Garcés Negrete,
  • Jesús M. López-Lezama and
  • Nicolás Muñoz-Galeano

18 April 2025

This study presents a methodology for optimizing the placement and sizing of photovoltaic generation in power distribution networks. In addition to technical and budgetary constraints, the proposed approach incorporates georeferenced spatial restrict...

  • Review
  • Open Access
4 Citations
2,499 Views
21 Pages

18 April 2025

Critical raw materials are economically and strategically important for industry both in the short and long term. However, their supply is at high risk due to limited domestic deposits and reliance on imports. As demand for these materials grows, alt...

  • Article
  • Open Access
3 Citations
868 Views
28 Pages

18 April 2025

As concerns about sustainable energy solutions grow, the exploration of bio-inspired techniques for optimizing renewable energy systems becomes increasingly important. This study presents a theoretical application of bio-inspired algorithms, specific...

  • Article
  • Open Access
984 Views
26 Pages

Winglet Geometries Applied to Rotor Blades of a Hydraulic Axial Turbine Used as a Turbopump: A Parametric Analysis

  • Daniel da Silva Tonon,
  • Jesuino Takachi Tomita,
  • Ezio Castejon Garcia,
  • Cleverson Bringhenti,
  • Luiz Eduardo Nunes de Almeida,
  • Jayanta Kapat and
  • Ladislav Vesely

18 April 2025

Turbines are rotating machines that generate power by the expansion of a fluid; due to their characteristics, these turbomachines are widely applied in aerospace propulsion systems. Due to the clearance between the rotor blade tip and casing, there i...

  • Review
  • Open Access
2 Citations
4,056 Views
27 Pages

Fiber Optic Daylighting with Concentrating Solar Collectors: A State-of-the-Art Review

  • Taher Maatallah,
  • Faisal Wahab,
  • Mussad Alzahrani,
  • Arshad Jamal and
  • Sajid Ali

18 April 2025

Nowadays, the development of innovative and feasible sustainable solutions able to reduce lighting costs and enhance the building’s energy efficiency is a hot topic and one of the most challenging research avenues. In this context, fiber optic...

  • Article
  • Open Access
4 Citations
1,318 Views
28 Pages

Research on Measures to Limit Short-Circuit Current by Changing the Structure of the Power Grid

  • Shuqin Sun,
  • Guanghao Zhou,
  • Yunting Song,
  • Xiaojun Tang,
  • Yuguang Zhou and
  • Zhenghai Yuan

18 April 2025

This paper addresses the increasingly severe issue of excessive short-circuit currents brought about by the rapid development of large power grids. The working principles of structural changes in the grid as a means of limiting currents are studied,...

  • Review
  • Open Access
6 Citations
1,847 Views
54 Pages

Photovoltaic Technology and Rural Landscapes: A Systematic Literature Review on Challenges and Sustainable Integration

  • Stefano Bigiotti,
  • Mariangela Ludovica Santarsiero,
  • Carlo Costantino and
  • Alvaro Marucci

18 April 2025

Energy supply through photovoltaic technology represents one of the most widely applied solutions in achieving energy transition goals. However, its expansion in rural contexts raises concerns due to the unique characteristics of the natural environm...

  • Article
  • Open Access
745 Views
20 Pages

Low-Voltage Power Restoration Based on Fog Computing Load Forecasting and Data-Driven Wasserstein Distributionally Robust Optimization

  • Ruoxi Liu,
  • Yifan Song,
  • Yuan Gui,
  • Hanqi Dai,
  • Zhiyong Wang,
  • Chengdong Yin,
  • Qinglei Qin,
  • Wenqin Yang and
  • Yue Wang

18 April 2025

This paper proposes a fault self-healing recovery strategy for passive low-voltage power station areas (LVPSAs). Firstly, being aware of the typical structure and communication conditions of the LVPSAs, a fog computing load forecasting method is prop...

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Energies - ISSN 1996-1073