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Energies, Volume 13, Issue 16

August-2 2020 - 239 articles

Cover Story: A supervisory control concept of a hybrid electric vehicle (HEV) is very important in that it determines the performance of the system though, generally, the control ideas are not disclosed to the public. In this paper, the strategic control concept of a real-world HEV has been analyzed based on the data collected from real-world driving tests. View this paper.
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Articles (239)

  • Article
  • Open Access
16 Citations
4,677 Views
23 Pages

18 August 2020

Energy expenditure is a critical characteristic in evaluating the flight performance of flying insects. To investigate how the energy cost of small-sized insects varies with flight speed, we measured the detailed wing and body kinematics in the full...

  • Article
  • Open Access
10 Citations
3,910 Views
23 Pages

18 August 2020

Sunlight is converted into electrical energy due to the photovoltaic effect in photovoltaic cells. Energy yield of photovoltaic systems depends on the solar array location, orientation, tilt, tracking and local weather conditions. In order to determi...

  • Article
  • Open Access
13 Citations
3,948 Views
17 Pages

18 August 2020

This paper presents the manufacturing challenges of a transverse flux alternator for an aerospace application. For fault tolerance, four independent isolated phases are required to deliver a specific power at low speeds, whilst at over speed, there i...

  • Article
  • Open Access
11 Citations
3,727 Views
14 Pages

Performance Comparison of PD Data Acquisition Techniques for Condition Monitoring of Medium Voltage Cables

  • Muhammad Shafiq,
  • Ivar Kiitam,
  • Kimmo Kauhaniemi,
  • Paul Taklaja,
  • Lauri Kütt and
  • Ivo Palu

18 August 2020

Already installed cables are aging and the cable network is growing rapidly. Improved condition monitoring methods are required for greater visibility of insulation defects in the cable networks. One of the critical challenges for continuous monitori...

  • Review
  • Open Access
23 Citations
6,489 Views
45 Pages

Reviewing the Modeling Aspects and Practices of Shallow Geothermal Energy Systems

  • Paul Christodoulides,
  • Ana Vieira,
  • Stanislav Lenart,
  • João Maranha,
  • Gregor Vidmar,
  • Rumen Popov,
  • Aleksandar Georgiev,
  • Lazaros Aresti and
  • Georgios Florides

18 August 2020

Shallow geothermal energy systems (SGES) may take different forms and have recently taken considerable attention due to energy geo-structures (EGS) resulting from the integration of heat exchange elements in geotechnical structures. Still, there is a...

  • Article
  • Open Access
28 Citations
9,938 Views
9 Pages

Blue-Light Levels Emitted from Portable Electronic Devices Compared to Sunlight

  • David Baeza Moyano,
  • Yolanda Sola and
  • Roberto Alonso González-Lezcano

18 August 2020

Over recent years, a technological revolution has taken place in which conventional lighting has been replaced by light emitting diodes (LEDs). Some studies have shown the possibility that blue light from these artificial sources could have deleterio...

  • Article
  • Open Access
25 Citations
6,791 Views
20 Pages

Do Tense Geopolitical Factors Drive Crude Oil Prices?

  • Fen Li,
  • Zhehao Huang,
  • Junhao Zhong and
  • Khaldoon Albitar

18 August 2020

Geopolitical factors are considered a crucial factor that makes a difference in crude oil prices. Over the last three decades, many political events occurred frequently, causing short-term fluctuations in crude oil prices. This paper aims to examine...

  • Article
  • Open Access
10 Citations
3,324 Views
23 Pages

17 August 2020

Recently, the awareness of the severe consequences of greenhouse gases on the environment has escalated. This has encouraged the world to reduce the usage of fossil fuels for power generation and increase the use of cleaner sources, such as solar ene...

  • Article
  • Open Access
47 Citations
8,805 Views
26 Pages

17 August 2020

Energy Internet, a futuristic evolution of electricity system, is conceptualized as an energy sharing network. Its features, such as plug-and-play mechanism, real-time bidirectional flow of energy, information, and money can lead to significant benef...

  • Article
  • Open Access
6 Citations
3,754 Views
25 Pages

Analytical Modeling of the Cyclic ES-SAGD Process

  • Diego Manfre Jaimes and
  • Matthew Clarke

17 August 2020

Approximately half of the daily oil production from the Canadian oil sands comes from the application of steam assisted gravity drainage (SAGD). Due to the high steam requirements of SAGD, many studies have focused on solvent injection as a means of...

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Energies - ISSN 1996-1073