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Energies, Volume 18, Issue 5

March-1 2025 - 297 articles

Cover Story: Water scarcity is an escalating global issue which also affects Poland. One of the solutions to this challenge is seawater desalination, particularly using solar stills (SSs). SSs offer a sustainable and low-cost solution for desalination, but their efficiency depends mainly on local solar conditions. Therefore, this study presents long-term experimental results for a single-basin and single-slope SS’s performance in Krakow, Poland, from May to September 2022. The findings show that the SS effectively removed over 98% of the total dissolved solids, with a productivity ranging from 1084 to 5014 mL/(m2·day) and water temperatures reaching up to 80.4 °C. These results highlight the feasibility of solar-powered desalination in Poland and contribute valuable data for future optimization. View this paper
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Articles (297)

  • Article
  • Open Access
1,194 Views
22 Pages

6 March 2025

Methanol synthesis can utilize the product gas from biomass gasification and the hydrogen generated from water electrolysis. Biomass gasification, as an upstream process, affects the subsequent hydrogen supplement amount and has a direct relationship...

  • Article
  • Open Access
1 Citations
1,537 Views
18 Pages

Optimal Bidding Capacity of Virtual Power Plant Incorporating Power-to-X Resources on Day-Ahead Energy Market

  • Kyeong-Hee Cho,
  • Hyung-Chul Jo,
  • Wanbin Son,
  • Soon-Young Kwon and
  • Gilsung Byeon

6 March 2025

Sector coupling technology, which is also called power-to-X (P2X) technology, refers to the conversion of renewable energy system (RES) outputs into various forms of energy, enhancing the utility of RESs and facilitating the development of sustainabl...

  • Feature Paper
  • Review
  • Open Access
2 Citations
3,300 Views
28 Pages

6 March 2025

As energy efficiency measures have reduced the operational carbon footprint of buildings, the significance of embodied carbon has increased. Efforts by all construction players, including material and component manufacturers, are needed to avoid burd...

  • Article
  • Open Access
1,153 Views
19 Pages

Comparative Study of Different Gases for Packed-Bed Thermal Energy Storage Systems

  • Ayah Marwan Rabi’,
  • Jovana Radulovic and
  • James M. Buick

6 March 2025

In recent years, packed-bed systems for large-scale applications have emerged as a highly promising design for Thermal Energy Storage systems because of their high thermal efficiency and economic feasibility. Large-scale application systems typically...

  • Article
  • Open Access
870 Views
30 Pages

6 March 2025

With the high proportion of wind and photovoltaic (PV) power connection in the new electricity system, the system output power volatility is enhanced. When the output fluctuation of the system is suppressed, the pumped storage condition is changed fr...

  • Article
  • Open Access
1 Citations
1,252 Views
25 Pages

6 March 2025

This paper discusses the results of our investigation of the effect of processing parameters on the electrochemical properties of poly(vinylidene fluoride) single-walled carbon nanotube sheets and PVDF-CNTs modified by solution cast polyimide coating...

  • Article
  • Open Access
2,020 Views
18 Pages

6 March 2025

The detailed n-heptane mechanism, which is widely used today, is suitable for a wide range of operating conditions. However, due to the large model involved, it is difficult to use this mechanism for computational fluid dynamics (CFD) simulation. In...

  • Article
  • Open Access
2 Citations
1,644 Views
24 Pages

6 March 2025

High-current-carrying capability with minimum thermal elongation is one of the key reasons for using high-temperature low-sag (HTLS) conductors in modern power systems. However, their higher operational temperature can significantly affect corona dis...

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

Evaluation of Light Electric Flying-Wing Unmanned Aerial System Energy Consumption During Holding Maneuver

  • Artur Kierzkowski,
  • Bartłomiej Dziewoński,
  • Krzysztof Kaliszuk and
  • Mateusz Kucharski

6 March 2025

This study evaluates the energy consumption of a light electric flying-wing unmanned aerial system (UAS) during low-altitude holding maneuvers. Two flight patterns were investigated: circular holding at a specified altitude and a figure-eight traject...

  • Article
  • Open Access
1,200 Views
19 Pages

6 March 2025

A numerical study was conducted on winglet designs with multiple sweep angles for improving the performance of horizontal axis wind turbine (HAWT) blades, and their effect on reducing the wing tip vortex was investigated by CFD analysis. The effects...

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Energies - ISSN 1996-1073