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Energies, Volume 16, Issue 15

2023 August-1 - 268 articles

Cover Story: Radio frequency energy harvesting (RFEH) is a specific type of wireless energy harvesting that enables wireless power transfer by utilizing RF signals. RFEH holds immense potential for extending the lifespan of wireless sensors and wearable electronics that require low-power operation. This literature review focuses on three key areas: materials, antenna design, and power management, to delve into the research challenges of RFEH comprehensively. By providing an up-to-date review of research findings on RFEH, this review aims to shed light on the critical challenges, potential opportunities, and existing limitations. Moreover, it emphasizes the importance of further research and development in RFEH to advance its state-of-the-art and offer a vision for future trends in this technology. View this paper
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Articles (268)

  • Feature Paper
  • Review
  • Open Access
60 Citations
10,649 Views
45 Pages

7 August 2023

The quest for sustainable and environmentally friendly fuel feedstocks has led to the exploration of green solvents for the extraction of bio-oil from various biomass sources. This review paper provides a comprehensive analysis of the challenges and...

  • Article
  • Open Access
4 Citations
2,443 Views
17 Pages

Modelling of Floor Heating and Cooling in Residential Districts

  • Xenia Kirschstein,
  • Joscha Reber,
  • Rouven Zeus,
  • Miriam Schuster and
  • Nadja Bishara

7 August 2023

In this study, a method is proposed to expand the utilization of an existing calculation model for a floor heat exchanger (HX) from room scale to small district scale. The model, namely Trnsys Type 653, is typically employed for the simulation of sin...

  • Feature Paper
  • Article
  • Open Access
8 Citations
2,070 Views
21 Pages

7 August 2023

Improvement of the principles of the implementation of a hybrid solar-wind system equipped with a battery for self-consumption of a local object, with the control of power consumed from the grid, is considered. The aim is to increase the degree of en...

  • Article
  • Open Access
15 Citations
4,527 Views
18 Pages

7 August 2023

Due to the reduction in pollutant emissions, the number of electric vehicles has experienced rapid growth in worldwide traffic. Vehicles equipped with batteries represent a greater danger of explosion and fire in the case of traffic accidents, which...

  • Article
  • Open Access
1,782 Views
15 Pages

Mechanism of Low-Frequency Oscillation When Electric Multiple Units Pass Neutral Zone, and Suppression Method

  • Jixing Sun,
  • Kun Zhang,
  • Jiyong Liu,
  • Kaixuan Hu,
  • Jindong Huo,
  • Shengchun Yan and
  • Yan Zhang

7 August 2023

This article addresses the problem of the contact voltage increase caused by the low-frequency oscillation of the train-grid system in the phase-separation process of EMUs. The article establishes the EMU-contact line-traction substation model, revea...

  • Article
  • Open Access
12 Citations
2,860 Views
11 Pages

A ZnO Gas Sensor with an Abnormal Response to Hydrogen

  • Hao Sun,
  • Yachi Yao,
  • Ruixuan Yang,
  • Zhaonan Yan,
  • Chen Cao,
  • Yanwen Deng,
  • Shengjiang Wu,
  • Shuhai Liu,
  • Qi Xu and
  • Yong Qin

7 August 2023

ZnO is a commonly used material for hydrogen gas sensors. In this study, a ZnO nanofiber film with a diameter of approximately 60 nm was synthesized by the electrospinning method. Compared to previously reported ZnO hydrogen gas sensors, an abnormal...

  • Article
  • Open Access
4 Citations
3,528 Views
28 Pages

7 August 2023

Undertaking various activities aimed at sustainable development, especially energy conservation, is becoming one of the challenges of modern economies, including developing urban areas. One of the most widely promoted activities is designing and impl...

  • Article
  • Open Access
12 Citations
3,040 Views
17 Pages

7 August 2023

Supplementation with iron oxide nanoparticles has been suggested as a potential method for improving energy generation through anaerobic digestion, specifically by enhancing the rate of methane production. This investigation examined the effects of i...

  • Article
  • Open Access
84 Citations
6,513 Views
21 Pages

The Driving Factors of Italy’s CO2 Emissions Based on the STIRPAT Model: ARDL, FMOLS, DOLS, and CCR Approaches

  • Dulal Chandra Pattak,
  • Farian Tahrim,
  • Mahdi Salehi,
  • Liton Chandra Voumik,
  • Salma Akter,
  • Mohammad Ridwan,
  • Beata Sadowska and
  • Grzegorz Zimon

7 August 2023

As the sustainability of the environment is a very much concerning issue for developed countries, the drive of the paper is to reveal the effects of nuclear, environment-friendly, and non-friendly energy, population, and GDP on CO2 emission for Italy...

  • Feature Paper
  • Article
  • Open Access
6 Citations
5,129 Views
27 Pages

On the Benefits of Active Aerodynamics on Energy Recuperation in Hybrid and Fully Electric Vehicles

  • Petar Georgiev,
  • Giovanni De Filippis,
  • Patrick Gruber and
  • Aldo Sorniotti

7 August 2023

In track-oriented road cars with electric powertrains, the ability to recuperate energy during track driving is significantly affected by the frequent interventions of the antilock braking system (ABS), which usually severely limits the regenerative...

  • Article
  • Open Access
3 Citations
2,277 Views
13 Pages

Hydropower Unit Commitment Using a Genetic Algorithm with Dynamic Programming

  • Shuangquan Liu,
  • Pengcheng Wang,
  • Zifan Xu,
  • Zhipeng Feng,
  • Congtong Zhang,
  • Jinwen Wang and
  • Cheng Chen

7 August 2023

This study presents a genetic algorithm integrated with dynamic programming to address the challenges of the hydropower unit commitment problem, which is a nonlinear, nonconvex, and discrete optimization, involving the hourly scheduling of generators...

  • Article
  • Open Access
2 Citations
5,543 Views
15 Pages

Vacuum Insulation Panel: Evaluation of Declared Thermal Conductivity Value and Implications for Building Energy

  • Fred Edmond Boafo,
  • Jin-Hee Kim,
  • Jong-Gwon Ahn,
  • Sang-Myung Kim and
  • Jun-Tae Kim

7 August 2023

Policymakers regularly implement stricter building energy-efficiency codes towards curtailing building energy use. Inevitably, super-insulating materials such as Vacuum Insulation Panels (VIPs) are essential to satisfy such codes. VIPs have been appl...

  • Article
  • Open Access
8 Citations
2,041 Views
15 Pages

7 August 2023

The inherent randomness, fluctuation, and intermittence of photovoltaic power generation make it difficult to track the scheduling plan. To improve the ability to track the photovoltaic plan to a greater extent, a real-time charge and discharge power...

  • Article
  • Open Access
5 Citations
1,971 Views
18 Pages

7 August 2023

Analyzing and investigating the impact of implementing an environmental policy mix on carbon emission from private cars and social welfare holds significant reference value. Firstly, based on vehicle trajectory big data, this paper employs reverse ge...

  • Article
  • Open Access
2 Citations
3,502 Views
20 Pages

7 August 2023

Biomass and renewable resources are becoming substitutes for fossil-based resources, providing opportunities for more sustainable environmental management and reductions in environmental damage. This paper studies the prospects for wood pellet produc...

  • Brief Report
  • Open Access
1,800 Views
6 Pages

Phenomenological Material Model for First-Order Electrocaloric Material

  • Sabrina Unmüßig,
  • David Bach,
  • Youri Nouchokgwe,
  • Emmanuel Defay and
  • Kilian Bartholomé

7 August 2023

Caloric cooling systems are potentially more efficient than systems based on vapour compression. Electrocaloric cooling systems use a phase transformation from the paraelectric to the ferroelectric state by applying or removing an electric field to p...

  • Article
  • Open Access
4 Citations
2,669 Views
21 Pages

7 August 2023

Backflashover rate (BFR) is strongly dependent on the cumulative peak current distribution (CCD) adopted in the calculations. An original aspect of the present work is that such dependence is simultaneously assessed in estimating the probability of t...

  • Article
  • Open Access
15 Citations
2,971 Views
26 Pages

Advancing Sustainable Decomposition of Biomass Tar Model Compound: Machine Learning, Kinetic Modeling, and Experimental Investigation in a Non-Thermal Plasma Dielectric Barrier Discharge Reactor

  • Muhammad Yousaf Arshad,
  • Muhammad Azam Saeed,
  • Muhammad Wasim Tahir,
  • Halina Pawlak-Kruczek,
  • Anam Suhail Ahmad and
  • Lukasz Niedzwiecki

7 August 2023

This study examines the sustainable decomposition reactions of benzene using non-thermal plasma (NTP) in a dielectric barrier discharge (DBD) reactor. The aim is to investigate the factors influencing benzene decomposition process, including input po...

  • Article
  • Open Access
4 Citations
3,149 Views
23 Pages

7 August 2023

Recent years have seen a rapid uptake in distributed energy resources (DER). Such technologies pose a number of challenges to network operators, which ultimately can limit the amount of rooftop solar photovoltaic (PV) systems that can be connected to...

  • Article
  • Open Access
9 Citations
3,309 Views
14 Pages

Optimal Scheduling of Virtual Power Plant with Flexibility Margin Considering Demand Response and Uncertainties

  • Yetuo Tan,
  • Yongming Zhi,
  • Zhengbin Luo,
  • Honggang Fan,
  • Jun Wan and
  • Tao Zhang

7 August 2023

The emission reduction of global greenhouse gases is one of the key steps towards sustainable development. Demand response utilizes the resources of the demand side as an alternative of power supply which is very important for the power network balan...

  • Article
  • Open Access
1 Citations
2,189 Views
21 Pages

6 August 2023

A periodic pigging operation performed to clean off sediment and provide operators with detailed health information for a pipeline is mandatorily required. The research on pigging-induced issues for the steel catenary riser (SCR), one of the key part...

  • Article
  • Open Access
2 Citations
1,889 Views
14 Pages

6 August 2023

In this work, the thermodynamics and kinetics of hydrate formation in 9.01 wt% tetra butyl ammonium bromide (TBAB) mixed with water-soluble hydroxylated multi-wall carbon nanotube (MWCNTol) systems were characterized by measuring hydrate formation co...

  • Article
  • Open Access
12 Citations
3,687 Views
20 Pages

6 August 2023

Flutter is an instability phenomenon that can occur in wind turbine blades due to fluid–structure interaction, particularly for longer and more flexible blades. Aeroelastic tailoring through bend–twist coupling is an effective method to e...

  • Article
  • Open Access
26 Citations
4,273 Views
26 Pages

Optimal Design and Operation of Hybrid Renewable Energy Systems for Oakland University

  • Edrees Yahya Alhawsawi,
  • Hanan Mikhael D. Habbi,
  • Mansour Hawsawi and
  • Mohamed A. Zohdy

6 August 2023

This research paper presents a comprehensive study on the optimal planning and design of hybrid renewable energy systems for microgrid (MG) applications at Oakland University. The HOMER Pro platform analyzes the technical, economic, and environmental...

  • Article
  • Open Access
1 Citations
2,252 Views
16 Pages

6 August 2023

The ironless linear permanent magnet synchronous motor (ILPMSM) is highly compact, easy to control, and exhibits minimal thrust fluctuations, making it an ideal choice for direct loading applications requiring precise positioning accuracy in linear m...

  • Article
  • Open Access
1 Citations
2,450 Views
24 Pages

6 August 2023

A Permanent Magnet Linear Alternator (PMLA) works seamlessly with a Free Piston Stirling Engine (FPSE) to convert short-stroke and high-frequency linear motion to electric power. Cogging force is an unavoidable opposition force acting on the translat...

  • Review
  • Open Access
11 Citations
3,306 Views
22 Pages

Alternative Methods of Replacing Electric Batteries in Public Transport Vehicles

  • Dariusz Masłowski,
  • Ewa Kulińska and
  • Łukasz Krzewicki

6 August 2023

Current electric vehicle solutions offer the possibility of a fully electrified bus fleet, although due to financial constraints, most cities cannot afford it. Therefore, the possibility of battery replacement is a needed alternative to the electrifi...

  • Article
  • Open Access
8 Citations
3,870 Views
22 Pages

5 August 2023

Accurately predicting power load is a pressing concern that requires immediate attention. Short-term load prediction plays a crucial role in ensuring the secure operation and analysis of power systems. However, existing research studies have limited...

  • Article
  • Open Access
4 Citations
2,698 Views
15 Pages

5 August 2023

Understanding the electrochemical and mechanical degradations inside the electrodes of lithium-ion battery is crucial for the design of robust electrodes. A typical lithium-ion battery electrode consists of active particles enclosed with conductive b...

  • Feature Paper
  • Article
  • Open Access
4 Citations
2,402 Views
33 Pages

Seismic Characterization of the Blue Mountain Geothermal Field

  • Kai Gao,
  • Lianjie Huang and
  • Trenton Cladouhos

5 August 2023

Subsurface characterization is crucial for geothermal energy exploration and production. Yet hydrothermal reservoirs usually reside in highly fractured and faulted zones where accurate characterization is very challenging because of low signal-to-noi...

  • Article
  • Open Access
4 Citations
2,217 Views
13 Pages

Energy Efficiency Indicator of Pumping Equipment Usage

  • Oleksandr Ivchenko,
  • Vladyslav Andrusiak,
  • Vladyslav Kondus,
  • Ivan Pavlenko,
  • Serhii Petrenko,
  • Andżelika Krupińska,
  • Sylwia Włodarczak,
  • Magdalena Matuszak and
  • Marek Ochowiak

5 August 2023

The rational choice of pumping units and the effective usage of the corresponding pumping equipment are urgent problems in terms of ensuring the energy efficiency of up-to-date enterprises. The research aims to develop an energy efficiency indicator...

  • Article
  • Open Access
12 Citations
2,556 Views
17 Pages

Weightless Neural Network-Based Detection and Diagnosis of Visual Faults in Photovoltaic Modules

  • Naveen Venkatesh Sridharan,
  • Jerome Vasanth Joseph,
  • Sugumaran Vaithiyanathan and
  • Mohammadreza Aghaei

5 August 2023

The present study introduces a novel approach employing weightless neural networks (WNN) for the detection and diagnosis of visual faults in photovoltaic (PV) modules. WNN leverages random access memory (RAM) devices to simulate the functionality of...

  • Article
  • Open Access
1 Citations
1,494 Views
20 Pages

5 August 2023

Regenerative electric heating has gradually become one of the main forms of winter heating with the promotion of “coal to electricity” project. By fully exploiting its regulating capacity, it can effectively achieve a win–win situat...

  • Article
  • Open Access
14 Citations
3,664 Views
14 Pages

5 August 2023

To overcome the safety hazard of the liquid electrolytes used in traditional lithium batteries, solid electrolytes have drawn more attention because of their advantages such as non-volatility, easy processing, good mechanical properties, and stabilit...

  • Article
  • Open Access
9 Citations
4,227 Views
19 Pages

5 August 2023

Wakes between neighboring wind turbines are a significant source of energy loss in wind farm operations. Extensive research has been conducted to analyze and understand wind turbine wakes, ranging from aerodynamic descriptions to advanced control str...

  • Article
  • Open Access
7 Citations
2,066 Views
22 Pages

Simulation Analysis of Mechanical Fluidized Bed in Adsorption Chillers

  • Wojciech Kalawa,
  • Karol Sztekler,
  • Agata Mlonka-Mędrala,
  • Ewelina Radomska,
  • Wojciech Nowak,
  • Łukasz Mika,
  • Tomasz Bujok and
  • Piotr Boruta

5 August 2023

Adsorption systems are alternatives to compressor cooling systems. Apart from many advantages, these systems are characterized by low COP and SCP parameters. One of the most promising options to improve the performance of adsorption chillers is the r...

  • Article
  • Open Access
6 Citations
3,089 Views
17 Pages

Helical Static Mixer Simulations for Its Integration in the Pour Plate Method: Mixing Agar and a Nutrient Solution

  • Ana M. Díaz,
  • Inés Terrones-Fernandez,
  • Pedro Javier Gamez-Montero and
  • Robert Castilla

5 August 2023

In microbiology laboratories, it is essential to obtain high-quality samples where the culture media are completely homogeneous. The pour plate method includes having to melt the culture media—a mixture of agar and a nutrient solution—bef...

  • Article
  • Open Access
11 Citations
3,289 Views
16 Pages

4 August 2023

Electric vehicles are seen as the prevailing choice for eco-friendly transportation. In electric vehicles, the thermal management system of battery cells is of great significance, especially under high operating temperatures and continuous discharge...

  • Article
  • Open Access
9 Citations
2,960 Views
24 Pages

4 August 2023

Establishing carbon neutrality (or Net Zero) in cities appears to be an ambitious challenge, which drives urban transformation efforts around the world to enhance people-centric living. Cities launch corresponding strategies focusing mainly on the Un...

  • Article
  • Open Access
1 Citations
1,531 Views
19 Pages

4 August 2023

Coal is the main energy source in China. As flat and shallow coal seams are being depleted, adverse coal seams such as inclined and steeply inclined coal seams account for larger proportion of seams that are mined. For these coal seams, instability s...

  • Review
  • Open Access
14 Citations
7,665 Views
19 Pages

4 August 2023

Subsea oil and gas (O&G) exploration demands significantly high power to supply the electrical loads for extraction and pumping of the oil and gas. The energy demand is usually met by fossil fuel combustion-based platform generation, which releas...

  • Article
  • Open Access
30 Citations
2,524 Views
22 Pages

4 August 2023

The conventional resonant inductor–inductor–capacitor (L2C) DC–DC converters have the major drawbacks of poor regulation, improper current sharing, load current ripples, conduction losses, and limiting the power levels to operate at...

  • Article
  • Open Access
4 Citations
2,295 Views
16 Pages

4 August 2023

As the penetration of renewable energy sources into a power system increases, the significance of precise short-term forecasts for wind power generation becomes paramount. However, the erratic and non-periodic nature of wind poses challenges in accur...

  • Review
  • Open Access
68 Citations
6,348 Views
17 Pages

4 August 2023

With the rapid development of smart grids and distributed energy sources, the home energy management system (HEMS) is becoming a hot topic of research as a hub for connecting customers and utilities for energy visualization. Accurate forecasting of f...

  • Review
  • Open Access
12 Citations
5,171 Views
34 Pages

4 August 2023

Adsorption cooling technology is a promising alternative to replace conventional solutions. However, adsorption chillers still need to be improved in terms of performance parameters. One of the most important factors affecting their efficiency is the...

  • Feature Paper
  • Article
  • Open Access
2 Citations
1,764 Views
22 Pages

4 August 2023

The control and regulation of thermal fields is of great significance in solving various thermal management problems in human life. Benefitting from the emerging space transformation technique and thermal meta-material, thermal meta-structures with u...

  • Feature Paper
  • Article
  • Open Access
4 Citations
2,604 Views
25 Pages

4 August 2023

This paper develops a multi-sector computable general equilibrium (CGE) model with specific features for Greece and the non-EU Rest of the World (RoW). The novelty of this work stems from the lack of energy-focused CGE models for Greece in the curren...

  • Review
  • Open Access
40 Citations
28,965 Views
17 Pages

Indian Scenario of Biomass Availability and Its Bioenergy-Conversion Potential

  • Harshita Negi,
  • Deep Chandra Suyal,
  • Ravindra Soni,
  • Krishna Giri and
  • Reeta Goel

4 August 2023

The current energy scenario and policies demand the transition of the fuel economy from conventional fossil fuels to renewable fuels, carbon-neutral fuels, and/or decarbonized fuels. The impact of biomass-derived fuels is well-known as their radiocar...

  • Article
  • Open Access
1,394 Views
21 Pages

Robust Proportional–Integral Sliding Mode Control for Induction Motors with Input Time Delay

  • Saulo Crnkowise Garcia,
  • Lucas Carvalho Souza,
  • Luciano de Souza da Costa e Silva and
  • Falcondes José Mendes de Seixas

4 August 2023

This paper proposes a control strategy applied to a three-phase induction motor (TIM) subject to parametric uncertainties, perturbations, and input time delay, whose primary objective is to achieve high-performance speed–torque control. The con...

  • Article
  • Open Access
6 Citations
1,978 Views
21 Pages

4 August 2023

This article presents the results of computer analysis of selected switching networks. In these analyses, the influence of selected parasitic components of electronic switches on the total and active power losses in these switches is considered. Anal...

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Energies - ISSN 1996-1073