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Energies, Volume 17, Issue 24

December-2 2024 - 287 articles

Cover Story: Opuntia ficus-indica (cactus pear) emerged as a promising crop for sustainable bioenergy production on marginal land, mitigating competition with food crops and lowering the risk of other indirect land use changes. Here, a bottom-up approach using semi-structured interviews was applied to assess the potential of cactus pear pruning residues for bioenergy production in a rural smallholder farming community in Central Mexico, Nopaltepec. It was found that the pruning residues could provide about 9720 m3 biogas per hectare and year without compromising fruit yields in the region. The farmers expressed keen interest in integrating this technology into their farming systems. These results underline the potential of cactus pear for developing a sustainable decentralized bioenergy sector and provide valuable input for future bottom-up assessments in similar rural communities. View this paper
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Articles (287)

  • Article
  • Open Access
1 Citations
1,068 Views
19 Pages

23 December 2024

In the midst of the push for dual-carbon goals, urban centers are faced with the imperative of reducing emissions and conserving energy, while rural regions are harnessing their abundant new energy resources to promote balanced urban–rural deve...

  • Review
  • Open Access
4 Citations
2,464 Views
32 Pages

Evaluation of Coal Repowering Option with Small Modular Reactor in South Korea

  • Semin Joo,
  • Seok Ho Song,
  • Seokjun Oh,
  • Staffan Qvist and
  • Jeong Ik Lee

23 December 2024

The Paris Agreement emphasizes the need to reduce greenhouse gas emissions, particularly from coal power. One suggested approach is repowering coal-fired power plants (CPPs) with small modular reactors (SMRs). South Korea plans to retire CPPs in the...

  • Review
  • Open Access
6 Citations
1,578 Views
32 Pages

Review on Development and Research of Underwater Capacitive Power Transfer

  • Ying Liu,
  • Binghe Li,
  • Liangyi Pan,
  • Shunyu Yao,
  • Zhutao Dong,
  • Jiantao Zhang,
  • Chunbo Zhu and
  • Shumei Cui

23 December 2024

Wireless power transfer (WPT) technology applied to underwater environments has the advantages of no electrical contact, high safety, and high applicability. Underwater capacitive power transfer (UCPT) technology shows great potential in the field of...

  • Article
  • Open Access
3 Citations
1,204 Views
22 Pages

23 December 2024

In the condition of waste heat recovery from mine return air with a temperature of 20~30 °C and velocity about 4 to 8 m/s, the structure of gravity-type heat pipe with fin increases the heat exchange areas and meanwhile increases the resistance o...

  • Article
  • Open Access
3 Citations
1,974 Views
20 Pages

23 December 2024

The asymmetric design of hairpin windings is known as a method for reducing AC losses in electric motors, especially at high frequencies. However, the design of the asymmetric winding is very critical to obtaining the best benefit regarding the effic...

  • Article
  • Open Access
2 Citations
980 Views
18 Pages

Impact of Temperature on the Hygroscopic Behavior and Mechanical Properties of Expansive Mudstone

  • Lingdong Meng,
  • Wenxiu Zhang,
  • Huakui Yang,
  • Shaoyun Xu,
  • Ming Xu,
  • Lina Zhang and
  • Wenlong Dong

23 December 2024

Aiming at the large-scale nonlinear deformation of the roadway in Liangjia Coal Mine, Shandong Province, the mudstone of the 1602 working face is taken as the research object. A high-precision mudstone weathering test system integrating monitoring an...

  • Article
  • Open Access
2 Citations
1,142 Views
15 Pages

23 December 2024

This paper addresses the challenge of enhancing power quality in a standalone microgrid powered by wind and battery systems. Fluctuations in wind power generation and unpredictable electricity demand significantly impact power quality. To mitigate th...

  • Article
  • Open Access
1,360 Views
16 Pages

23 December 2024

This article presents a method for identifying the cause of damage to a rotary air preheater on one of the fluidized bed boilers operating in a power plant. The bearing in question operates under harsh conditions with the exhaust gas temperature reac...

  • Review
  • Open Access
5 Citations
6,892 Views
28 Pages

A Survey on Energy-Efficient Design for Federated Learning over Wireless Networks

  • Xuan-Toan Dang,
  • Binh-Minh Vu,
  • Quynh-Suong Nguyen,
  • Thi-Thuy-Minh Tran,
  • Joon-Soo Eom and
  • Oh-Soon Shin

23 December 2024

Federated learning (FL) has emerged as a decentralized, cutting-edge framework for training models across distributed devices, such as smartphones, IoT devices, and local servers while preserving data privacy and security. FL allows devices to collab...

  • Review
  • Open Access
4 Citations
3,331 Views
35 Pages

23 December 2024

The Integrated Resource Plan (IRP) 2019 outlines South Africa’s goal of achieving a diverse and sustainable energy mix. To achieve this, innovative methods must be found to integrate renewable energy sources while preserving grid stability. Vir...

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Energies - ISSN 1996-1073