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Energies, Volume 17, Issue 9

May-1 2024 - 254 articles

Cover Story: The reduction of CO2 by carbon-based fuels through the Boudouard reaction is a promising approach to facilitating the large-scale utilization of CO2 when integrated with the coal gasification industry. The carbon structure of char plays a crucial role in the reduction of CO2 due to the stable chemical properties of CO2. Therefore, the solid carbon-based fuels are first activated to improve the reactivity, and then the Boudouard reaction is enhanced at high temperatures to strengthen the CO2 reduction. This study is dedicated to proposing a technology combining solid carbon activation and high-temperature CO2 reduction and establishing a bench-scale platform. Experimental studies were conducted to verify the effectiveness of the activation process and obtain the CO2 reduction effects of the process with different solid carbon-based fuels. View this paper
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Articles (254)

  • Article
  • Open Access
1 Citations
2,368 Views
17 Pages

6 May 2024

The demand for different energy goods and services is a fundamental component in a country’s economic structure for development. Understanding it is vital in designing economic policies, such as taxes, that can improve the welfare of the popula...

  • Article
  • Open Access
25 Citations
2,395 Views
28 Pages

Neural Network Approximation of Helicopter Turboshaft Engine Parameters for Improved Efficiency

  • Serhii Vladov,
  • Ruslan Yakovliev,
  • Maryna Bulakh and
  • Victoria Vysotska

6 May 2024

The work is devoted to the development of a method for neural network approximation of helicopter turboshaft engine parameters, which is the basis for researching engine energy characteristics to improve efficiency, reliability, and flight safety. It...

  • Article
  • Open Access
3 Citations
2,273 Views
15 Pages

6 May 2024

The application of a two-phase ejector allows for the mixing of liquid and gas and provides effective heat transfer between phases. The aim of the study is a numerical investigation of the performance of a water-driven, condensing two-phase ejector....

  • Article
  • Open Access
2 Citations
1,769 Views
18 Pages

6 May 2024

In a renewable-energy-penetrated power system (RPPS), inverter-based resources (IBRs) pose serious challenges to power system stability due to their completely different dynamic characteristics compared with conventional generators; thus, it is neces...

  • Article
  • Open Access
9 Citations
2,478 Views
17 Pages

6 May 2024

As offline control photovoltaic (PV) plants are not equipped with online communication and remote control systems, they cannot adjust their power in real-time. Therefore, in a distribution network saturated with offline control PVs, the distribution...

  • Feature Paper
  • Article
  • Open Access
7 Citations
3,479 Views
21 Pages

6 May 2024

In Poland and other countries in Central Europe, residential buildings from the second half of the 20th century dominate, which have recently undergone deep thermomodernisation. Research on the retrofitting of residential buildings has focused mainly...

  • Article
  • Open Access
3 Citations
5,277 Views
15 Pages

Minimum Carbon Credit Cost Estimation for Carbon Geological Storage in the Mae Moh Basin, Thailand

  • Chanapol Charoentanaworakun,
  • Komsoon Somprasong,
  • Anusak Duongkaew,
  • Panita Wongchai,
  • Ploypailin Katunyoo and
  • Purin Thanaphanyakhun

6 May 2024

Carbon geological storage (CGS) is one of the key processes in carbon capture and storage (CCS) technologies, which are used to reduce CO2 emissions and achieve carbon-neutrality and net-zero emissions in developing countries. In Thailand, the Mae Mo...

  • Article
  • Open Access
4 Citations
2,176 Views
14 Pages

Solidification and Release Characteristics of Heavy Metals in Gypsum from Coal-Fired Power Plants

  • Dongxu Wang,
  • Shuzhou Wei,
  • Dawei Zhao,
  • Yongzheng Gu and
  • Jiawei Wang

6 May 2024

Heavy metals in flue gas desulfurization (FGD) gypsum from coal-fired power plants are at risk of releaching during the processes of stockpiling and resource utilization. In this study, the effects of organosulfur chelators dithiocarbamate (DTC) and...

  • Article
  • Open Access
5 Citations
2,874 Views
15 Pages

Pre-Treatment of Spent Coffee Grounds Using Hydrodynamic Cavitation

  • Aleksandra Szaja,
  • Agnieszka Montusiewicz,
  • Sylwia Pasieczna-Patkowska,
  • Elżbieta Grządka,
  • Jerzy Montusiewicz and
  • Magdalena Lebiocka

6 May 2024

Spent coffee grounds (SCGs) constitute the main solid residue of the coffee brewing process. SCGs are generated in significant amounts daily, worldwide. The effective management of this waste through biological processes is still an unresolved proble...

  • Article
  • Open Access
7 Citations
3,161 Views
15 Pages

An Experimental Direct Model for the Sky Temperature Evaluation in the Mediterranean Area: A Preliminary Investigation

  • Edoardo De Cristo,
  • Luca Evangelisti,
  • Claudia Guattari and
  • Roberto De Lieto Vollaro

6 May 2024

Since the beginning of the 20th century, many studies have focused on the possibility of considering the sky as a body characterized by an apparent temperature, and several correlations to quantify the apparent sky temperature have been proposed. How...

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Energies - ISSN 1996-1073