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Energies, Volume 14, Issue 8

April-2 2021 - 310 articles

Cover Story: The purpose of this study was to accurately predict the mutual interference of wind turbine wakes, especially in a large-scale wind farm above the ocean, consisting of multiple wind turbine groups. For this purpose, we proposed the CFD porous disk wake model as an intermediate method between engineering wake models and CFD wake models, including actuator line model. Targeting the vertical wind speed distribution in the near-wake region acquired in the lidar, we tuned the parameters of the CFD porous disk wake model. The CFD porous disk wake model applied to the wind-turbine-swept area was found to be very effective. View this paper.
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Articles (310)

  • Article
  • Open Access
4 Citations
6,984 Views
14 Pages

20 April 2021

Wind energy development has been limited by concerns associated to the varying features in wind speed which tends to destabilize the power system. This study aims to clarify the variability of winds within a day in the Philippines, specifically the h...

  • Article
  • Open Access
10 Citations
4,604 Views
15 Pages

Design and Analysis of a Dual Airgap Radial Flux Permanent Magnet Vernier Machine with Yokeless Rotor

  • Mudassir Raza Siddiqi,
  • Tanveer Yazdan,
  • Jun-Hyuk Im,
  • Muhammad Humza and
  • Jin Hur

20 April 2021

This paper presents a novel topology of dual airgap radial flux permanent magnet vernier machine (PMVM) in order to obtain a higher torque per magnet volume and similar average torque compared to a conventional PMVM machine. The proposed machine cont...

  • Article
  • Open Access
3 Citations
2,454 Views
25 Pages

20 April 2021

Battery energy storage systems (BESSs) are increasingly adopted to mitigate the negative effects caused by the intermittent generation of photovoltaic (PV) systems. The majority of commercial BESSs implement the self-consumption, rule-based approach,...

  • Article
  • Open Access
14 Citations
4,961 Views
22 Pages

Development of AI-Based Diagnostic Model for the Prediction of Hydrate in Gas Pipeline

  • Youngjin Seo,
  • Byoungjun Kim,
  • Joonwhoan Lee and
  • Youngsoo Lee

20 April 2021

For the stable supply of oil and gas resources, industry is pushing for various attempts and technology development to produce not only existing land fields but also deep-sea, where production is difficult. The development of flow assurance technolog...

  • Article
  • Open Access
2 Citations
2,768 Views
20 Pages

20 April 2021

The wide use of different alternative fuels (AL) has led to challenges to the internal combustion (IC) engine tribology. To avoid any unpredicted damages to lubrication joints by using AL fuels, this study aims to accurately evaluate the influences o...

  • Article
  • Open Access
3 Citations
3,112 Views
23 Pages

The Use of the Fourier Series to Analyze the Shaping of Thermodynamic Processes in Heat Engines

  • Michał Głogowski,
  • Przemysław Kubiak,
  • Szymon Szufa,
  • Piotr Piersa,
  • Łukasz Adrian and
  • Mateusz Krukowski

20 April 2021

The article presents the application of the Fourier series to theoretical considerations on the method of maximum temperature control in thermodynamic cycles of internal combustion engines equipped with an additional independent kinematic system. The...

  • Article
  • Open Access
14 Citations
3,136 Views
14 Pages

Support Vector Machine Based Fault Location Identification in Microgrids Using Interharmonic Injection

  • Alireza Forouzesh,
  • Mohammad S. Golsorkhi,
  • Mehdi Savaghebi and
  • Mehdi Baharizadeh

20 April 2021

This paper proposes an algorithm for detection and identification of the location of short circuit faults in islanded AC microgrids (MGs) with meshed topology. Considering the low level of fault current and dependency of the current angle on the cont...

  • Article
  • Open Access
6 Citations
3,961 Views
18 Pages

20 April 2021

To incorporate exchanger dimensions as a design objective in plate and fin heat exchangers, a variable that must be taken into consideration is the geometry of the finned surfaces to be used. In this work, a methodology to find the surface geometry t...

  • Article
  • Open Access
21 Citations
3,400 Views
12 Pages

20 April 2021

This study analyzed the performance decline of wind turbine with age using the SCADA (Supervisory Control And Data Acquisition) data and the short-term in situ LiDAR (Light Detection and Ranging) measurements taken at the Shinan wind farm located on...

  • Article
  • Open Access
10 Citations
3,443 Views
22 Pages

Experimental Validation of the Thermal Processes Modeling in a Solar Still

  • Ewelina Radomska,
  • Lukasz Mika,
  • Karol Sztekler and
  • Wojciech Kalawa

20 April 2021

Passive solar distillation is cheap and energy-efficient technology but its main disadvantage is low productivity. Thus, there are many attempts to improve solar stills’ productivity, and one of them is changing the mass of the water. This paper pres...

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Energies - ISSN 1996-1073