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Energies, Volume 15, Issue 12

June-2 2022 - 329 articles

Cover Story: In general, the finite element method (FEM) is used to accurately analyze the electromagnetic field characteristic of a permanent magnet generator. Various and complex models, such as overhang and bolting structures, require a characteristic analysis using 3D FEM. However, it is difficult to always reflect the 3D FEM in the initial design, where the analysis time is proportional to the complex design element. In this paper, in order to shorten the analysis time, a semi-3D characteristic analysis of the permanent magnet synchronous generator was performed by considering the overhang and bolting structures in the 2D FEM. The usability of the analysis method is evaluated in terms of the near agreement from results compared to performance. View this paper
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Articles (329)

  • Article
  • Open Access
4 Citations
2,884 Views
11 Pages

20 June 2022

Solar energy storage in the form of chemical energy is considered a promising alternative for solar energy utilization. High-performance solar energy conversion and storage significantly rely on the sufficient active surface area and the efficient tr...

  • Article
  • Open Access
2,158 Views
15 Pages

Numerical Investigation of the Pre-Chamber and Nozzle Design in the Gasoline Engine of an Agricultural Tractor

  • Bowen Zheng,
  • Quan Zhou,
  • Zhenghe Song,
  • Enrong Mao,
  • Zhenhao Luo,
  • Xuedong Shao,
  • Yuxi Liu and
  • Wenjie Li

20 June 2022

With the rapid development of agriculture in China today, the demand for agricultural machinery is rapidly increasing. A large amount of exhaust gas emissions poses a severe threat to the environment. To better promote engine fuel and air mixing, enh...

  • Article
  • Open Access
11 Citations
2,271 Views
19 Pages

20 June 2022

In this paper we present results of research on the transformation of chemical forms of two elements (Cu, Zn) that occurred at the highest concentration in sewage sludge being processed in a composting process. The factor that had impact on the direc...

  • Article
  • Open Access
6 Citations
2,631 Views
21 Pages

Full-Scale Demonstration of Combined Ground Source Heating and Sustainable Urban Drainage in Roadbeds

  • Søren Erbs Poulsen,
  • Theis Raaschou Andersen and
  • Karl Woldum Tordrup

20 June 2022

This paper proposes and demonstrates, in full scale, a novel type of energy geostructure (“the Climate Road”) that combines a ground-source heat pump (GSHP) with a sustainable urban drainage system (SUDS) by utilizing the gravel roadbed s...

  • Article
  • Open Access
2,100 Views
13 Pages

20 June 2022

With the exponential growth of traffic demand, ultra-dense networks have been proposed to cope with such demand. However, the increase of the network density causes more power use, and carbon neutrality becomes an important concept to decrease the em...

  • Article
  • Open Access
50 Citations
5,079 Views
15 Pages

Application of Machine Learning for Lithofacies Prediction and Cluster Analysis Approach to Identify Rock Type

  • Mazahir Hussain,
  • Shuang Liu,
  • Umar Ashraf,
  • Muhammad Ali,
  • Wakeel Hussain,
  • Nafees Ali and
  • Aqsa Anees

20 June 2022

Nowadays, there are significant issues in the classification of lithofacies and the identification of rock types in particular. Zamzama gas field demonstrates the complex nature of lithofacies due to the heterogeneous nature of the reservoir formatio...

  • Article
  • Open Access
2 Citations
2,492 Views
30 Pages

Evaluation of Alternatives for Energy Supply from Fuel Cells in Compact Cities in the Mediterranean Climate; Case Study: City of Valencia

  • Irene Martínez Reverte,
  • Tomás Gómez-Navarro,
  • Carlos Sánchez-Díaz and
  • Carla Montagud Montalvá

20 June 2022

A study of energy supply alternatives was carried out based on a cogeneration fuel cell system fed from the natural gas network of compact Mediterranean cities. As a case study it was applied to the residential energy demands of the L’Illa Perd...

  • Article
  • Open Access
3 Citations
1,871 Views
18 Pages

20 June 2022

In medium-term scheduling, the end-of-term storage energy maximization model is proposed to create conditions for the safety, stability and economic operation of the hydropower system after control term, which satisfies the system load demand underta...

  • Article
  • Open Access
15 Citations
2,449 Views
12 Pages

Employing GMDH-Type Neural Network and Signal Frequency Feature Extraction Approaches for Detection of Scale Thickness inside Oil Pipelines

  • Abdullah M. Iliyasu,
  • Abdulilah Mohammad Mayet,
  • Robert Hanus,
  • Ahmed A. Abd El-Latif and
  • Ahmed S. Salama

20 June 2022

In this paper, gamma attenuation has been utilised as a veritable tool for non-invasive estimation of the thickness of scale deposits. By simulating flow regimes at six volume percentages and seven scale thicknesses of a two phase-flow in a pipe, our...

  • Article
  • Open Access
2 Citations
2,650 Views
18 Pages

Sedimentary Basin Water and Energy Storage: A Low Environmental Impact Option for the Bananal Basin

  • Julian David Hunt,
  • Andreas Nascimento,
  • Oldrich Joel Romero Guzman,
  • Gilton Carlos de Andrade Furtado,
  • Carla Schwengber ten Caten,
  • Fernanda Munari Caputo Tomé,
  • Walter Leal Filho,
  • Bojan Đurin,
  • Maurício Lopes and
  • Yoshihide Wada

20 June 2022

Groundwater storage is an important water management solution that is overlooked by several countries worldwide. This paper evaluates the potential for storing water in the Bananal sedimentary basin and proposes the construction of canals to reduce s...

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Energies - ISSN 1996-1073Creative Common CC BY license