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Energies, Volume 18, Issue 2

January-2 2025 - 227 articles

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Cover Story: Wireless rechargeable sensor networks (WRSNs) are critical for monitoring and data collection in large-scale dynamic environments. Energy autonomy of sensor nodes is crucial for their sustained operation. This paper surveys state-of-the-art technologies in on-demand energy provisioning for large-scale WRSNs. We explore energy harvesting techniques, storage solutions, and management strategies tailored to resource-constrained environments. The survey categorizes literature based on energy sources and discusses advances in storage. We also investigate management techniques that balance consumption and harvesting to optimize network performance. This paper identifies opportunities and challenges in energy provisioning for WRSNs and provides insights for future innovations in sustainable sensor networks, which are critical for smart city solutions. View this paper

Articles (227)

  • Feature Paper
  • Article
  • Open Access
1 Citations
2,121 Views
25 Pages

20 January 2025

The paper analyses multi-variant energy simulations carried out in IDA ICE 4.8 software for a newly designed single-family building within the framework of the 4E Idea. This idea assumes the use of energy-saving, ecological, ergonomic, and economic s...

  • Article
  • Open Access
2 Citations
1,438 Views
20 Pages

20 January 2025

Hydrogen is a promising environmentally friendly fuel with the potential for zero-carbon emissions, particularly in maritime applications. However, owing to its wide flammability range (4–75%), significant safety concerns persist. In confined s...

  • Feature Paper
  • Article
  • Open Access
3 Citations
1,756 Views
15 Pages

20 January 2025

Urban Air Mobility (UAM) is gaining attention as a solution to urban population growth and air pollution. Hydrogen fuel cells are applied to overcome the limitations of battery-based UAM, utilizing a PEMFC (Polymer Electrolyte Membrane Fuel Cell) wit...

  • Article
  • Open Access
1 Citations
1,312 Views
21 Pages

Empirically Validated Method to Simulate Electric Minibus Taxi Efficiency Using Tracking Data

  • Chris Joseph Abraham ,
  • Stephan Lacock ,
  • Armand André du Plessis and
  • Marthinus Johannes Booysen

20 January 2025

Simulation is a cornerstone of planning and facilitating the transition towards electric mobility in sub-Saharan Africa’s informal public transport. The primary objective of this study is to validate and refine the electro-kinetic model used to...

  • Article
  • Open Access
1,081 Views
19 Pages

Estimating a Non-Linear Economic Model for a Small-Scale Pyrolysis Unit

  • Alok Dhaundiyal,
  • András Máté Betovics and
  • Laszlo Toth

20 January 2025

This article used control theory to derive a non-linear exergoeconomic model for a bench-scale pyrolysis unit. A combination of an autoregressive model with an exogenous input model was involved to investigate the energy system. The economic prospect...

  • Review
  • Open Access
7 Citations
3,426 Views
39 Pages

Coal Gangue Utilization: Applications, Challenges, and Sustainable Development Strategies

  • Yinghui Sun,
  • Bohao Bai,
  • Xu Yang,
  • Shujun Zhu,
  • Jilin Tian,
  • Zhuozhi Wang,
  • Li Xu,
  • Lianfei Xu and
  • Boxiong Shen

20 January 2025

Coal gangue is a kind of typical by-product emitted during the coal mining and washing process. With the increase in coal resource utilization, a large amount of coal gangue was not reasonably utilized, causing environmental pollution and resource wa...

  • Article
  • Open Access
2 Citations
1,334 Views
23 Pages

20 January 2025

Solar PV inverters require output filters to reduce unwanted harmonics in their output, where LCL filters are a more economical choice than larger inductance-only filters. A drawback of these filters is that they can introduce power quality disturban...

  • Article
  • Open Access
4 Citations
1,221 Views
19 Pages

20 January 2025

With the transformation of the energy structure, the integration of numerous small-scale, widely distributed renewable energy sources into the power grid has introduced operational safety challenges. To enhance the operational competitiveness, the vi...

  • Article
  • Open Access
1,184 Views
25 Pages

High-Order Engineering Fastest Controller and Its Application in Thermal Power Units

  • Shangyao Shi,
  • Jun Li,
  • Yijia Huo,
  • Ruiqi Li and
  • Pengyun Chen

20 January 2025

In the domain of industrial process control, the ubiquitous proportional–integral–derivative (PID) control paradigm, while foundational, is deemed insufficient amidst evolving complexities. In alignment with China’s strategic &ldquo...

  • Article
  • Open Access
1 Citations
1,480 Views
17 Pages

20 January 2025

Adopting and widely implementing solar photovoltaic (PV) systems are regarded as a promising solution to address energy crises by providing a sustainable and independent electricity supply while significantly reducing greenhouse gas emissions to comb...

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