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Energies, Volume 18, Issue 16

2025 August-2 - 248 articles

Cover Story: This review highlights the urgent need for decarbonization in Northern Canadian off-grid Indigenous communities, where the dependence on diesel for heat and power results in high greenhouse gas emissions. It examines strategies to improve building efficiency through advanced insulation, airtightness, and reduced thermal bridging, demonstrated by a prototype house in Quaqtaq that cut energy use by over 50%. The study also evaluates renewable options including solar, wind, geothermal, and run-of-river hydropower. Successful projects such as the Innavik hydroelectric initiative and Raglan Mine turbines show the potential to greatly reduce diesel use. The review further emphasizes the importance of Indigenous knowledge to ensure culturally appropriate solutions and identifies key technical and socio-economic barriers that must be addressed for a sustainable and equitable energy transition. View this paper
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Articles (248)

  • Article
  • Open Access
1 Citations
1,360 Views
19 Pages

Numerical Analysis on Thermal and Flow Performance of Honeycomb-Structured Microchannel Cooling Plate for IGBT

  • Guangtao Zhai,
  • Hao Yang,
  • Wu Gong,
  • Fan Wu,
  • Junxiong Zeng,
  • Xiaojin Fu and
  • Tieyu Gao

21 August 2025

In high-power insulated gate bipolar transistor (IGBT) module thermal management, the structural design of microchannel cooling plates plays a crucial role in determining heat dissipation efficiency and temperature uniformity. This study focuses on t...

  • Article
  • Open Access
1,486 Views
20 Pages

21 August 2025

Solid Oxide Fuel Cells (SOFCs) offer high-efficiency electrochemical conversion of fuels like natural gas, yet detailed modeling is crucial for optimization. This paper presents a simulation study of a natural gas-fueled SOFC system, developed using...

  • Feature Paper
  • Article
  • Open Access
1,443 Views
25 Pages

21 August 2025

This study presents a simulation-based analysis of a steel modular building that integrates technologies that support the energy transition in the built environment. The focus is placed on the implementation of building-integrated photovoltaics (BIPV...

  • Article
  • Open Access
1 Citations
1,016 Views
23 Pages

21 August 2025

High-temperature heat pumps (HTHPs) have gradually begun to play an essential role in using heat in industry for waste heat recovery and providing higher-grade heat. The isentropic efficiency and volumetric efficiency of HTHPs are significantly affec...

  • Article
  • Open Access
1,094 Views
32 Pages

21 August 2025

Portugal’s commitment to carbon neutrality by 2050 has intensified the search for renewable energy alternatives, with biomass gasification emerging as a promising pathway for hydrogen production. This comprehensive review analyzes the potential...

  • Article
  • Open Access
1 Citations
916 Views
24 Pages

21 August 2025

To enhance the development efficiency of medium–deep geothermal resources in cold regions, this study focuses on a coaxial borehole heat exchanger (CBHE) located in Dapuzi Town, Xining City, Qinghai Province. Based on field-scale heat exchange...

  • Article
  • Open Access
1 Citations
1,133 Views
18 Pages

Convective Heat Loss Prediction Using the Concept of Effective Wind Speed for Dynamic Line Rating Studies

  • Yuxuan Wang,
  • Fulin Fan,
  • Yu Wang,
  • Ke Wang,
  • Jinhai Jiang,
  • Chuanyu Sun,
  • Rui Xue and
  • Kai Song

21 August 2025

Dynamic line rating (DLR) is an effective technique for real-time assessments on current-carrying capacities of overhead lines (OHLs), improving efficiencies and preventing overloads of transmission networks. Most research related to DLR forecasting...

  • Article
  • Open Access
1 Citations
5,158 Views
35 Pages

21 August 2025

Tokamak technology, as the cornerstone of nuclear fusion energy, holds immense potential in achieving efficient plasma confinement and high energy densities. To comprehensively map the rapidly evolving landscape of this field, this study employs bibl...

  • Article
  • Open Access
1,134 Views
15 Pages

21 August 2025

With the increasing depletion of fossil fuels, it is urgent to build an efficient regional heating scheme. Long-distance heating transportation schemes are important for the integration and utilization of low-grade heat resources. It is worth noting...

  • Article
  • Open Access
1 Citations
1,834 Views
22 Pages

21 August 2025

Energy storage will play an important role in the new power system with a high penetration of renewable energy due to its flexibility. Large-scale energy storage can participate in electricity market clearing, and knowing how to make more profits thr...

  • Review
  • Open Access
1,628 Views
32 Pages

Comprehensive Review of Hydrogen and Tyre Pyrolysis Oil as Sustainable Fuels for HCCI Engines

  • Dilip S. Borkar,
  • Sushant Satputaley,
  • Santosh Alone and
  • Magdalena Dudek

21 August 2025

This review article provides an overview of the use of hydrogen and tyre pyrolysis oil as fuels for homogeneous charge compression ignition (HCCI) engines. It discusses their properties, the ways they are produced and their sustainability, which is o...

  • Article
  • Open Access
1,712 Views
39 Pages

21 August 2025

Transmission network-expansion planning research requires reproducibility of results and comparability of research from various sources. This paper presents a process for modifying a published electricity network model so that the model can be used f...

  • Article
  • Open Access
1 Citations
1,602 Views
19 Pages

21 August 2025

Reduced chemical kinetic mechanisms are essential for enabling the use of complex fuels in 3D CFD combustion simulations. This study presents the development and optimization of a compact mechanism capable of accurately modeling ethanol–gasolin...

  • Article
  • Open Access
781 Views
20 Pages

21 August 2025

This study proposes a current control strategy to enhance the control stability of an interior permanent magnet synchronous motor (IPMSM) under transient conditions, such as rapid acceleration or deceleration in electric vehicle (EV) applications. Co...

  • Article
  • Open Access
2 Citations
3,963 Views
19 Pages

21 August 2025

Bifacial photovoltaic panels are preferred over monofacial panels due to the ability of their back surfaces to absorb radiation and generate electricity. However, optimizing the rear-side energy contribution remains a critical area of research. This...

  • Article
  • Open Access
1,156 Views
27 Pages

Powering the Woods Hole X-Spar Buoy with Ocean Wave Energy—A Control Co-Design Feasibility Study

  • Daniel T. Gaebele,
  • Ryan G. Coe,
  • Giorgio Bacelli,
  • Thomas Lanagan,
  • Paul Fucile,
  • Umesh A. Korde and
  • John Toole

21 August 2025

Despite its success in measuring air–sea exchange, the Woods Hole Oceanographic Institution’s (WHOI) X-Spar Buoy faces operational limitations due to energy constraints, motivating the integration of an energy harvesting apparatus to impr...

  • Feature Paper
  • Review
  • Open Access
3 Citations
10,862 Views
20 Pages

21 August 2025

The global energy transition is accelerating, yet new and underestimated challenges have emerged since 2024. Rising electricity demand—driven by artificial intelligence data centres, extreme heatwaves, and the electrification of transport&mdash...

  • Article
  • Open Access
4 Citations
2,363 Views
26 Pages

21 August 2025

The transition to fully electric bus (EB) fleets introduces new challenges in coordinating daily operations and managing charging energy needs, while accounting for infrastructure constraints. The paper proposes a three-stage optimization framework t...

  • Article
  • Open Access
1 Citations
2,859 Views
11 Pages

Nuclear Thermal Rocket Emulator for a Hardware-in-the-Loop Test Bed

  • Brandon A. Wilson,
  • Jono McConnell,
  • Wesley C. Williams,
  • Nick Termini,
  • Craig Gray,
  • Charles E. Taylor and
  • N. Dianne Ezell Bull

21 August 2025

To support NASA’s mission to use nuclear thermal rockets for future Mars missions, an instrumentation and control test bed has been built at Oak Ridge National Laboratory. The system is designed as a hardware-in-the-loop test bed for testing co...

  • Article
  • Open Access
1,139 Views
23 Pages

Research on Mode Transition Control of Power-Split Hybrid Electric Vehicle Based on Fixed Time

  • Hongdang Zhang,
  • Hongtu Yang,
  • Fengjiao Zhang,
  • Xuhui Liao and
  • Yanyan Zuo

20 August 2025

In this paper, we address the problem of jerk and disturbance suppression during mode transitions in power-split hybrid electric vehicles. First, a transient switching model of the PS-HEV is developed. Next, the mechanisms underlying shock generation...

  • Article
  • Open Access
1,050 Views
22 Pages

Fault Diagnosis of Wind Turbine Pitch Bearings Based on Online Soft-Label Meta-Learning and Gaussian Prototype Network

  • Lianghong Wang,
  • Zhongzhuang Bai,
  • Hongxiang Li,
  • Panpan Yang,
  • Jie Tao,
  • Xuemei Zou,
  • Jinliang Zhao and
  • Chunwei Wang

20 August 2025

Meta-learning has demonstrated significant advantages in small-sample tasks and has attracted considerable attention in wind turbine fault diagnosis. However, due to extreme operating conditions and equipment aging, the monitoring data of wind turbin...

  • Article
  • Open Access
2 Citations
1,112 Views
22 Pages

20 August 2025

The flow and heat transfer in a rotating disk cavity with dual axial inlets are investigated under a range of operating conditions. A full 360° computational fluid dynamics model is employed, with 40 simulation cases varying the rotational Reynol...

  • Article
  • Open Access
1,135 Views
19 Pages

20 August 2025

The article discusses the current challenges facing the energy sector in the context of climate policy, technological transformation, and the urgent need to increase energy efficiency while reducing greenhouse gas emissions. Modern thermal energy con...

  • Article
  • Open Access
1,074 Views
27 Pages

Optimal Configuration for Photovoltaic and Energy Storage in Distribution Network Using Comprehensive Evaluation Model

  • Rui Gao,
  • Dan Wang,
  • Chengxiong Mao,
  • Bin Liu,
  • Bingzhao Zhu,
  • Jiawei Huang and
  • Shengjun Wu

20 August 2025

To enhance the efficiency of renewable energy consumption and reduce reliance on fossil fuels, the study addresses the challenges of distributed photovoltaic and energy storage integration in distribution networks, such as voltage fluctuations, safet...

  • Article
  • Open Access
4 Citations
1,294 Views
21 Pages

Smart Monitoring and Management of Local Electricity Systems with Renewable Energy Sources

  • Olexandr Kyrylenko,
  • Serhii Denysiuk,
  • Halyna Bielokha,
  • Artur Dyczko,
  • Beniamin Stecuła and
  • Yuliya Pazynich

20 August 2025

Smart monitoring of local electricity systems (LESs) with sources based on renewable energy resources (RESs) from the point of view of the requirements of the functions of an intelligent system are hardware and software systems that can solve the tas...

  • Article
  • Open Access
1,720 Views
15 Pages

20 August 2025

With the rapid growth in the scale of high-percentage new energy generation, the structure of the new power system is changing. Influenced by the uncertainty and zero marginal cost characteristics of new energy, the security cost required by the powe...

  • Article
  • Open Access
1 Citations
894 Views
22 Pages

Equivalent Modeling and Simulation of Fracture Propagation in Deep Coalbed Methane

  • Cong Xiao,
  • Jiayuan He,
  • Lin Meng,
  • Rusheng Zhang and
  • Dong Xiong

20 August 2025

Deep coalbed methane (CBM) is challenging to develop due to considerable burial depth, high ground stress, and complex geological structures. However, modeling deep CBM in complex formations and setting reasonable simulation parameters to obtain reas...

  • Article
  • Open Access
1,342 Views
29 Pages

20 August 2025

Air separation units (ASUs) are power-intensive devices on the electricity demand side with significant potential for large-scale energy storage. Liquid air energy storage (LAES) is currently a highly promising large-scale energy storage technology....

  • Article
  • Open Access
1,625 Views
15 Pages

Catalytic Role of Nickel in Hydrogen Storage and Release Using Dibenzyltoluene as a Liquid Organic Hydrogen Carrier

  • Jesús Rodríguez Ruiz,
  • Nuria García-Mancha,
  • Roberto Campana and
  • Carlos Tardío

20 August 2025

Liquid Organic Hydrogen Carriers (LOHCs) represent a promising technology for the safe storage and transport of hydrogen. Its technical development largely depends on the catalysts used in the hydrogenation and dehydrogenation processes. Typically, n...

  • Article
  • Open Access
3 Citations
1,675 Views
25 Pages

Thermodynamic Evaluation of Low-GWP A1 Refrigerants for Ultra-Low Temperature Refrigeration Applications

  • Pau Giménez-Prades,
  • Cosmin-Mihai Udroiu,
  • Joaquín Navarro-Esbrí and
  • Adrián Mota-Babiloni

20 August 2025

Slow market development has caused the lack of low-GWP A1 refrigerants for ultra-low temperature (ULT) refrigeration. Consequently, the high-GWP refrigerant R23 (GWP = 14,600) remains widely used within the ULT sector. For this reason, this paper pro...

  • Article
  • Open Access
828 Views
19 Pages

Cabling Optimization in Wind Power Plants, Enhancing the Cable Type-Based Formulation

  • Ramon Abritta,
  • Alexey Pavlov,
  • Damiano Varagnolo,
  • Børre T. Børresen and
  • Ivo Chaves da Silva Junior

19 August 2025

The collection grid represents a relevant share of the total initial investments into a wind power plant. Planning/optimizing collection grids is a task that grows severely in complexity according to the size of the analyzed plant, i.e., its number o...

  • Article
  • Open Access
2 Citations
903 Views
22 Pages

19 August 2025

As the installed power of wind turbines increases, new challenges for the implementation of wind energy in the national power system emerge. Several hours of high energy productivity from wind turbines, together with the periodic occurrence of relati...

  • Article
  • Open Access
3 Citations
1,398 Views
22 Pages

A Graph Deep Reinforcement Learning-Based Fault Restoration Method for Active Distribution Networks

  • Yangqing Dan,
  • Hui Zhong,
  • Chenxuan Wang,
  • Jun Wang,
  • Yanan Fei and
  • Le Yu

19 August 2025

The topology of distribution networks changes frequently, and the uncertainty of load level and distributed generator (DG) output makes the operation scenarios more complex and variable. Based on this, a fault recovery method for active distribution...

  • Article
  • Open Access
3 Citations
1,295 Views
19 Pages

19 August 2025

The article discusses a regenerative heat exchange system for a solid oxide electrolyzer cell (SOEC) used in the production of green hydrogen. The heating system comprises four heat exchangers, one condenser heat exchanger, and a mixer evaporator. A...

  • Feature Paper
  • Review
  • Open Access
3 Citations
2,217 Views
32 Pages

19 August 2025

This article provides an overview of current hydrogen technologies used in road transport, with particular emphasis on their potential for decarbonizing the mobility sector. The author analyzes both fuel cells and hydrogen combustion in internal comb...

  • Article
  • Open Access
931 Views
19 Pages

Research on Transformer Hot-Spot Temperature Inversion Method Under Three-Phase Unbalanced Conditions

  • Mingming Xu,
  • Bowen Shang,
  • Ning Zhou,
  • Wei Wang,
  • Xuan Dong,
  • Yunbo Li and
  • Jiangjun Ruan

19 August 2025

When a transformer operates under three-phase unbalanced conditions, the location of the winding hot-spot temperature (HST) is no longer fixed on a certain phase. Taking an S13-M-100 kVA/10 kV transformer as the research object, this paper proposes a...

  • Article
  • Open Access
2 Citations
836 Views
27 Pages

19 August 2025

Microgrids play a crucial role in the development of future smart grids, with multiple interconnected microgrids forming large-scale multi-microgrid systems that operate as smart grids. Multi-agent system (MAS)-based control solutions are the most su...

  • Article
  • Open Access
1 Citations
859 Views
18 Pages

Dynamic Deformation Testing and Analysis of Wet Cylinder Liners Using the Eddy Current Method

  • Haining He,
  • Lizhong Shen,
  • Song Zu,
  • Yuchen Xu,
  • Jianping Song and
  • Yuhua Bi

19 August 2025

Improving the thermal efficiency of internal combustion engines plays a crucial role in reducing fuel consumption and engine emissions. Studies have shown that the friction loss caused by the piston ring–cylinder liner pair accounts for approxi...

  • Article
  • Open Access
4 Citations
1,337 Views
18 Pages

19 August 2025

As the demand for efficient heat dissipation in information devices continues to escalate, the heat flux of integrated packaging devices is poised to reach 100 W/cm2 universally, rendering microchannel liquid cooling technology a pivotal solution in...

  • Feature Paper
  • Review
  • Open Access
2,165 Views
27 Pages

A Review of Software and Hardware Tools for Microgrid Protection Testbeds

  • Majid Arabahmadi,
  • Saeed Sanati,
  • Innocent Kamwa and
  • Himanshu Grover

19 August 2025

This paper provides a comprehensive review of the various software and hardware tools used in microgrid protection studies, including experimental setup requirements. While these tools have broad applications in power system research, this review spe...

  • Article
  • Open Access
1 Citations
1,410 Views
22 Pages

Performance Evaluation of Closed Crankcase Ventilation System in an Industrial NG Engine

  • Arturo Quintero Castillo,
  • Juan Felipe Rodríguez,
  • Bret Windom and
  • Daniel B. Olsen

19 August 2025

This study evaluates the impact of a Closed Crankcase Ventilation (CCV) system on Caterpillar G3516J NG engine performance and emissions, focusing on engine performance, methane (CH4) emissions, oil consumption, and oil particle size distribution. Th...

  • Article
  • Open Access
2,495 Views
25 Pages

The Impact of Selected Market Factors on the Prices of Wood Industry By-Products in Poland in the Context of Climate Policy Changes

  • Anna Kożuch,
  • Dominika Cywicka,
  • Marek Wieruszewski,
  • Miloš Gejdoš and
  • Krzysztof Adamowicz

19 August 2025

The objective of this study was to analyze price variability and the factors influencing the formation of monthly prices of by-products of the wood industry in Poland between October 2017 and January 2025. The analysis considered the impact of econom...

  • Article
  • Open Access
3 Citations
1,403 Views
19 Pages

Evaluation of XGBoost and ANN as Surrogates for Power Flow Predictions with Dynamic Energy Storage Scenarios

  • Perez Yeptho,
  • Antonio E. Saldaña-González,
  • Mònica Aragüés-Peñalba and
  • Sara Barja-Martínez

19 August 2025

Power flow analysis is essential for managing power systems, helping grid operators ensure reliability and efficiency. This paper explores the use of machine learning (ML) techniques as surrogates for computationally intensive power flow calculations...

  • Article
  • Open Access
1 Citations
1,377 Views
16 Pages

Effect of Electrical Load and Operating Conditions on the Hydraulic Performance of a 10 kW Pelton Turbine Micro Hydropower Plant

  • Raúl R. Delgado-Currín,
  • Williams R. Calderón-Muñoz,
  • J. C. Elicer-Cortés and
  • Renato Hunter-Alarcón

19 August 2025

Micro-hydroelectric power plants play a fundamental role in microgrid systems and rural electrification projects based on non-conventional renewable energies, where the stability of the electricity supply and load variability are critical factors for...

  • Article
  • Open Access
2 Citations
2,167 Views
25 Pages

19 August 2025

Energy transition, encompassing the development of renewable energy sources and associated power transmission grids, may significantly impact landscape visual resources, particularly those legally protected. Large-scale energy transitions require a m...

  • Article
  • Open Access
1,015 Views
25 Pages

Spaces, Energy and Shared Resources: New Technologies for Promoting More Inclusive and Sustainable Urban Communities

  • Fabrizio Cumo,
  • Elisa Pennacchia,
  • Patrick Maurelli,
  • Flavio Rosa and
  • Claudia Zylka

19 August 2025

Renewable Energy Communities (RECs) are central to Europe’s strategy for reducing greenhouse gas emissions and advancing a sustainable, decentralized energy system. RECs aim to transform consumers into prosumers—individuals who both produ...

  • Review
  • Open Access
2 Citations
2,364 Views
27 Pages

19 August 2025

With the gradual penetration of new energy generation/storage, accurate and reliable load forecasting (LF) plays an increasingly important role in different energy management applications (e.g., power resource allocation, peak demand response, energy...

  • Article
  • Open Access
1 Citations
1,090 Views
23 Pages

Integration of PV Systems in Urban Environments: Complementary Metrics to Analyze Their Performance

  • Carlos Gilabert-Torres,
  • Leocadio Hontoria-García,
  • Juan Ignacio Fernández-Carrasco,
  • Adel Mellit and
  • Catalina Rus-Casas

19 August 2025

The decarbonization of the energy sector drives the implementation of building-integrated and building-applied photovoltaic (BIPV–BAPV) systems. However, these systems face space and design limitations in urban environments. This study proposes...

  • Review
  • Open Access
1 Citations
2,236 Views
40 Pages

19 August 2025

Improving the efficiency and range of hydrogen-powered electric vehicles (HPEVs) is essential for their global adoption, especially in developing countries with limited resources. This study systematically evaluates regenerative braking and suspensio...

  • Article
  • Open Access
1 Citations
1,441 Views
27 Pages

Day-Ahead Photovoltaic Power Forecasting Based on SN-Transformer-BiMixer

  • Xiaohong Huang,
  • Xiuzhen Ding,
  • Yating Han,
  • Qi Sima,
  • Xiaokang Li and
  • Yukun Bao

19 August 2025

Accurate forecasting of photovoltaic (PV) power is crucial for ensuring the safe and stable operation of power systems. However, the practical implementation of forecasting systems often faces challenges due to missing real-time historical power data...

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Energies - ISSN 1996-1073