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Energies, Volume 17, Issue 15

August-1 2024 - 259 articles

Cover Story: This feasibility study investigates extracting thermal energy from the Bedretto tunnel in the Swiss Alps. Our findings indicate that flowing water is the most effective heat source. Estimates indicate that the total extractable thermal energy ranges between 0.8 MWth and 1.5 MWth after reducing the water temperature to 4 °C via a heat pump. This study identifies the most suitable energy sourcing locations based on efficiency and investment costs. Cost analyses reveal that the investment in piping and heat pumps can be amortized within the equipment’s lifespan with appropriate economic models. With the same initial investments, district heating systems are viable in villages with over 30 connections. The payback periods are 10 years for 60 connections, 4.5 years for 90 connections, and immediate for 200 connections. View this paper
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Articles (259)

  • Review
  • Open Access
13 Citations
3,491 Views
32 Pages

5 August 2024

Natural gas (NG) is favored for transportation due to its availability and lower CO2 emissions than fossil fuels, despite drawbacks like poor lean combustion ability and slow burning. According to a few recent studies, using hydrogen (H2) alongside N...

  • Article
  • Open Access
9 Citations
2,145 Views
27 Pages

An Improved Cascaded Boost Converter with an Ultra-High Voltage Gain Suitable for Dielectric Quality Tests

  • Hossein Gholizadeh,
  • Reza Sharifi Shahrivar,
  • Saeed Amini and
  • Tohid Rahimi

5 August 2024

Dielectric quality tests require a high AC voltage with a frequency range of 0.0001 Hz to 1000 Hz. However, providing a high AC voltage with such a frequency variety is challenging. Providing a high DC voltage and then applying such a voltage to an i...

  • Article
  • Open Access
2 Citations
1,483 Views
24 Pages

5 August 2024

Energy-consuming rights trading policies (ECRTPs) represent a significant institutional innovation for China aimed at achieving the dual control targets of total energy consumption and energy consumption intensity. However, the effectiveness of these...

  • Article
  • Open Access
1 Citations
1,453 Views
23 Pages

5 August 2024

In this paper, partial energy processing is applied to the current sharing technique for multiphase LLC resonant converters. The proposed circuit consists of an LLC resonant converter and a flyback converter, where the flyback converter is only used...

  • Review
  • Open Access
5 Citations
2,870 Views
14 Pages

Trends and Challenges after the Impact of COVID-19 and the Energy Crisis on Financial Markets

  • Charalampos Basdekis,
  • Apostolos G. Christopoulos,
  • Ioannis Katsampoxakis and
  • Stylianos Xanthopoulos

5 August 2024

This review aims to examine the impact of increasing energy costs on the global economy, social cohesion, economic growth, and capital markets, with a particular focus on the consequences of the COVID-19 pandemic and the energy crisis intensified by...

  • Review
  • Open Access
7 Citations
3,535 Views
42 Pages

Review of Compensation Topologies Power Converters Coil Structure and Architectures for Dynamic Wireless Charging System for Electric Vehicle

  • Narayanamoorthi Rajamanickam,
  • Yuvaraja Shanmugam,
  • Rahulkumar Jayaraman,
  • Jan Petrov,
  • Lukas Vavra and
  • Radomir Gono

5 August 2024

The increasing demand for wireless power transfer (WPT) systems for electric vehicles (EVs) has necessitated advancements in charging solutions, with a particular focus on speed and efficiency. However, power transfer efficiency is the major concern...

  • Article
  • Open Access
4 Citations
1,985 Views
14 Pages

The Influence of Cyclic Loading on the Mechanical Properties of Well Cement

  • Zhen Zhang,
  • Zhongtao Yuan,
  • Sutao Ye,
  • Yang Li,
  • Lvchao Yang,
  • Xueyu Pang,
  • Kaihe Lv and
  • Jinsheng Sun

5 August 2024

The cyclic loading generated by injection and production operations in underground gas storage facilities can lead to fatigue damage to cement sheaths and compromise the integrity of wellbores. To investigate the influence of cyclic loading on the fa...

  • Feature Paper
  • Article
  • Open Access
2 Citations
3,113 Views
18 Pages

Investigation of Dead Time Losses in Inverter Switching Leg Operation: GaN FET vs. MOSFET Comparison

  • Vincenzo Barba,
  • Salvatore Musumeci,
  • Fausto Stella,
  • Fabio Mandrile and
  • Marco Palma

5 August 2024

This paper investigates the commutation transients of MOSFET and GaN FET devices in motor drive applications during hard-switching and soft-switching commutations at dead time operation. This study compares the switching behaviors of MOSFETs and GaN...

  • Article
  • Open Access
1 Citations
1,563 Views
16 Pages

5 August 2024

Independent lightning rods are often installed in substation grounding systems for lightning protection. The concentrated discharge channel formed when a lightning current flows to the ground through a grounding electrode will cause electromagnetic i...

  • Article
  • Open Access
2 Citations
2,286 Views
20 Pages

Hydroprocessing Microbial Oils for Advanced Road Transportation, Aviation, and Maritime Drop-In Fuels: Industrially Relevant Scale Validation

  • Athanasios Dimitriadis,
  • Loukia P. Chrysikou,
  • Ioanna Kosma,
  • Nikos Tourlakidis and
  • Stella Bezergianni

5 August 2024

Triacylglycerides (TAGs) produced via the syngas fermentation of biogenic residues and wastes were evaluated as a potential feedstock for advanced road transportation, aviation, and maritime drop-in fuels via hydroprocessing technology. Due to the li...

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Energies - ISSN 1996-1073