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Energies, Volume 14, Issue 24

2021 December-2 - 412 articles

Cover Story: Numerical simulation of multiple components in turbomachinery applications is very CPU demanding but remains necessary to capture the proper coupling and a reliable flow prediction in most cases. The use of realistic boundary conditions capable of accurately reproducing this coupling between components at a lower cost is of great interest. This paper presents a method able to generate more realistic boundary conditions for isolated turbine Large-Eddy Simulation (LES). The unsteady boundary conditions to be used at the inflow of the isolated turbine LES are built from the modal decomposition of the database recorded at the interface between the two components of the integrated LES simulation. The results demonstrate the capacity of this type of conditions to reproduce the coupling between the combustion chamber and the turbine when standard conditions cannot.View this paper
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Articles (412)

  • Review
  • Open Access
4 Citations
3,939 Views
16 Pages

Inclusion of Renewable Energy Sources in Municipal Environmental Policy—The Case Study of Kraków, Poland

  • Tomasz Jeleński,
  • Marta Dendys,
  • Elżbieta Radziszewska-Zielina and
  • Małgorzata Fedorczak-Cisak

20 December 2021

This article reviews the evolution of local environmental policy in the context of energy transition and particularly the implementation of RES. The study concerns Kraków, whose policy has been compared with other cities and metropolises and w...

  • Article
  • Open Access
12 Citations
3,085 Views
15 Pages

20 December 2021

This scientific publication is dedicated to the development of scientific methodological and practical recommendations about the formation of ecologistics approaches towards usage of the energetical potential of wooden biomass as a promising trend of...

  • Article
  • Open Access
10 Citations
4,402 Views
19 Pages

A Multimodal Improved Particle Swarm Optimization for High Dimensional Problems in Electromagnetic Devices

  • Rehan Ali Khan,
  • Shiyou Yang,
  • Shafiullah Khan,
  • Shah Fahad and
  • Kalimullah

20 December 2021

Particle Swarm Optimization (PSO) is a member of the swarm intelligence-based on a metaheuristic approach which is inspired by the natural deeds of bird flocking and fish schooling. In comparison to other traditional methods, the model of PSO is wide...

  • Article
  • Open Access
23 Citations
7,234 Views
25 Pages

Photovoltaic Solar Energy from Urban Sprawl: Potential for Poland

  • Artur Hołuj,
  • Mateusz Ilba,
  • Piotr Lityński,
  • Karol Majewski,
  • Marcin Semczuk and
  • Piotr Serafin

20 December 2021

Urban sprawl is a process that shapes contemporary urban spaces. Generally, this process is associated with negative effects due to the generation of high costs. However, not all the effects of urban sprawl should be considered in the context of the...

  • Article
  • Open Access
1 Citations
2,647 Views
14 Pages

20 December 2021

Nowadays, every large enterprise is concerned about reducing CO2 emissions. Along with legislation, management, packaging, and transportation decisions, optimising the operation of automated systems in the industry is important. Overheating processes...

  • Article
  • Open Access
26 Citations
3,625 Views
22 Pages

20 December 2021

Partial discharge detection is an important means of insulation diagnosis of electrical equipment. To effectively suppress the periodic narrowband and white noise interferences in the process of partial discharge detection, a partial discharge interf...

  • Article
  • Open Access
11 Citations
5,042 Views
22 Pages

A New Prediction Method for the Complete Characteristic Curves of Centrifugal Pumps

  • Huokun Li,
  • Hongkang Lin,
  • Wei Huang,
  • Jiazhen Li,
  • Min Zeng,
  • Jiming Ma and
  • Xin Hu

20 December 2021

Complete pump characteristics (CPCs) are the key for establishing pump boundary conditions and simulating hydraulic transients. However, they are not normally available from manufacturers, making pump station design difficult to carry out. To solve t...

  • Article
  • Open Access
7 Citations
3,723 Views
21 Pages

Effect of Seawater and Fly Ash Contaminants on Insulator Surfaces Made of Polymer Based on Finite Element Method

  • I Made Yulistya Negara,
  • I. G. N. Satriyadi Hernanda,
  • Dimas Anton Asfani,
  • Mira Kusuma Wardani,
  • Bonifacius Kevin Yegar and
  • Reynaldi Syahril

20 December 2021

Polymer is an insulating substance that has become increasingly popular in recent years due to its benefits. Light density, superior dielectric and thermal properties, and water-resistant or hydrophobic properties are only a few of the benefits. The...

  • Article
  • Open Access
4 Citations
6,484 Views
12 Pages

20 December 2021

A 1.2 kV SiC MOSFET with an integrated heterojunction diode and p-shield region (IHP-MOSFET) was proposed and compared to a conventional SiC MOSFET (C-MOSFET) using numerical TCAD simulation. Due to the heterojunction diode (HJD) located at the mesa...

  • Article
  • Open Access
11 Citations
3,259 Views
15 Pages

20 December 2021

The increasing popularity of automated systems and the increased market share of producers of robotic feeding equipment for cows causes the need for a deeper study of energy demand in such technologies. This article provides an analysis of the inputs...

  • Review
  • Open Access
92 Citations
16,711 Views
71 Pages

A Review on Power Electronics Technologies for Power Quality Improvement

  • Joao L. Afonso,
  • Mohamed Tanta,
  • José Gabriel Oliveira Pinto,
  • Luis F. C. Monteiro,
  • Luis Machado,
  • Tiago J. C. Sousa and
  • Vitor Monteiro

20 December 2021

Nowadays, new challenges arise relating to the compensation of power quality problems, where the introduction of innovative solutions based on power electronics is of paramount importance. The evolution from conventional electrical power grids to sma...

  • Article
  • Open Access
7 Citations
3,689 Views
29 Pages

20 December 2021

Underground mining machines, such as wheel-tyre drilling rigs, are articulated and equipped with booms that project far beyond the undercarriage. Such a structure makes these machines prone to losing stability. Hence, it is necessary to analyse the d...

  • Editorial
  • Open Access
3 Citations
3,068 Views
6 Pages

Advances in Fluid Power Systems

  • Ryszard Dindorf,
  • Jakub Takosoglu and
  • Piotr Wos

20 December 2021

The main purpose of this special edition of “Advances in Fluid Power Systems” was to present new scientific work in the field of fluid power systems for the hydraulic and pneumatic control of machines and devices that are used in various...

  • Article
  • Open Access
3 Citations
3,034 Views
18 Pages

Application of the ARMA Model to Describe and Forecast the Flotation Feed Solids Flow Rate

  • Jarosław Joostberens,
  • Aurelia Rybak,
  • Joachim Pielot and
  • Artur Dylong

20 December 2021

The flow rate of solids is subject to random disturbances of the changing feed and can significantly affect the quantitative and qualitative parameters of the coal flotation products. This quantity can be described as a stochastic process. The paper...

  • Article
  • Open Access
16 Citations
3,415 Views
17 Pages

20 December 2021

This article discusses issues regarding electromagnetic interference generated unintentionally by transport telematics systems and electronic security systems (ESS) located within a railway area. These systems should operate correctly, since they ens...

  • Article
  • Open Access
8 Citations
3,540 Views
11 Pages

20 December 2021

Recently, the use of new and renewable energy sources to reduce carbon dioxide emissions and minimize global warming has attracted attention. Among the different renewable energy sources, solar energy is utilized for energy reduction in buildings bec...

  • Article
  • Open Access
40 Citations
7,877 Views
19 Pages

Well-Logging Prediction Based on Hybrid Neural Network Model

  • Lei Wu,
  • Zhenzhen Dong,
  • Weirong Li,
  • Cheng Jing and
  • Bochao Qu

20 December 2021

Well-logging is an important formation characterization and resource evaluation method in oil and gas exploration and development. However, there has been a shortage of well-logging data because Well-logging can only be measured by expensive and time...

  • Article
  • Open Access
7 Citations
2,721 Views
20 Pages

20 December 2021

This numerical investigation presents the effects of the position of baffles in the shape of a circle’s segment placed inside a circular channel to improve the thermal and flow performance of a solar air heater. Three different baffles’ p...

  • Article
  • Open Access
6 Citations
3,264 Views
31 Pages

Robust Enough? Exploring Temperature-Constrained Energy Transition Pathways under Climate Uncertainty

  • Claire Nicolas,
  • Stéphane Tchung-Ming,
  • Olivier Bahn and
  • Erick Delage

20 December 2021

In this paper, we study how uncertainties weighing on the climate system impact the optimal technological pathways the world energy system should take to comply with stringent mitigation objectives. We use the TIAM-World model that relies on the TIME...

  • Article
  • Open Access
4 Citations
3,798 Views
21 Pages

20 December 2021

In this work, the production of I111n radionuclide has been investigated theoretically via heavy-ion fusion reactions of two stable nuclei: C37l+G74e, M26g+R85b, S30i+B81r, and C46a+C65u reactions. Fusion cross-sections, barrier distributions, and po...

  • Article
  • Open Access
2,204 Views
12 Pages

Non-Dimensional Analysis of Diffusion Characteristics in Polymer Electrolyte Membrane Fuel Cells with Mismatched Anodic and Cathodic Flow Channels

  • Hyeok Kim,
  • Geonhwi Kim,
  • Jaeyeon Kim,
  • Dasol Kim,
  • Obeen Kwon,
  • Hongnyoung Yoo,
  • Hyeonjin Cha,
  • Heesoo Choi and
  • Taehyun Park

20 December 2021

Polymer electrolyte membrane fuel cells were analyzed to investigate changes in the structure of the flow field and operating conditions. The cell performance, which was controlled by adjusting the width of the cathodic channel, improved as the backp...

  • Article
  • Open Access
31 Citations
7,168 Views
12 Pages

20 December 2021

Heavy-duty trucks contribute approximately 20% of fuel consumption in the United States of America (USA). The fuel economy of heavy-duty vehicles (HDV) is affected by several real-world parameters like road parameters, driver behavior, weather condit...

  • Article
  • Open Access
35 Citations
5,071 Views
14 Pages

Forecasting of Natural Gas Consumption in Poland Based on ARIMA-LSTM Hybrid Model

  • Anna Manowska,
  • Aurelia Rybak,
  • Artur Dylong and
  • Joachim Pielot

20 December 2021

Natural gas is one of the main energy sources in Poland and accounts for about 15% of the primary energy consumed in the country. Poland covers only 1/5 of its demand from domestic deposits. The rest is imported from Russia, Germany, Norway, the Czec...

  • Article
  • Open Access
13 Citations
4,421 Views
19 Pages

Combined NOx and NH3 Slip Reduction in a Stoker Boiler Equipped with the Hybrid SNCR + SCR System FJBS+

  • Robert Wejkowski,
  • Sylwester Kalisz,
  • Przemysław Garbacz and
  • Izabella Maj

20 December 2021

The application of secondary NOx control methods in medium to low-capacity furnaces is a relatively new topic on the energy market and thus requires further research. In this paper, the results of full-scale research of SNCR and hybrid SNCR + SCR met...

  • Article
  • Open Access
12 Citations
3,904 Views
19 Pages

Numerical Modelling of Various Aspects of Pipe Pile Static Load Test

  • Michał Baca,
  • Alexander L. Ivannikov and
  • Jarosław Rybak

20 December 2021

Due to the development of dedicated software and the computing capabilities of modern computers, the application of numerical methods to analyse more complex geotechnical problems is becoming increasingly common. However, there are still some areas w...

  • Article
  • Open Access
17 Citations
4,850 Views
16 Pages

20 December 2021

This paper presents the method for evaluation of the turns ratio correction of the inductive current transformer using the magnetization curves determined at the non-load state and in the load conditions. The presented method may be applied to determ...

  • Article
  • Open Access
15 Citations
5,226 Views
26 Pages

Blockchain-Enabled Energy Demand Side Management Cap and Trade Model

  • Alain Aoun,
  • Hussein Ibrahim,
  • Mazen Ghandour and
  • Adrian Ilinca

20 December 2021

Global economic growth, demographic explosion, digitization, increased mobility, and greater demand for heating and cooling due to climate change in different world areas are the main drivers for the surge in energy demand. The increase in energy dem...

  • Article
  • Open Access
14 Citations
2,752 Views
16 Pages

20 December 2021

The expansion of Internet of Things (IoT) services and the huge amount of data generated by different sensors signify the importance of cloud computing services such as Storage as a Service more than ever. IoT traffic imposes such extra constraints o...

  • Article
  • Open Access
27 Citations
4,914 Views
24 Pages

Simulation and Techno-Economic Analysis of a Power-to-Hydrogen Process for Oxyfuel Glass Melting

  • Sebastian Gärtner,
  • Daniel Rank,
  • Michael Heberl,
  • Matthias Gaderer,
  • Belal Dawoud,
  • Anton Haumer and
  • Michael Sterner

20 December 2021

As an energy-intensive industry sector, the glass industry is strongly affected by the increasingly stringent climate protection targets. As established combustion-based production systems ensure high process stability and glass quality, an immediate...

  • Article
  • Open Access
15 Citations
4,998 Views
23 Pages

20 December 2021

An analysis of the influence of injection well location on CO2 storage efficiency was carried out for three well-known geological structures (traps) in deep aquifers of the Lower Jurassic Polish Lowlands. Geological models of the structures were used...

  • Article
  • Open Access
8 Citations
3,428 Views
17 Pages

20 December 2021

Energy storage (ES) only contributes to a single-scene (peak or frequency modulation (FM)) control of the power grid, resulting in low utilization rate and high economic cost. Herein, a coordinated control method of peak modulation and FM based on th...

  • Article
  • Open Access
23 Citations
3,287 Views
19 Pages

19 December 2021

Battery Management Systems (BMSs) are used to manage the utilization of batteries and their operation in Electric and Hybrid Vehicles. It is imperative for efficient and safe operation of batteries to be able to accurately estimate the State of Charg...

  • Article
  • Open Access
2 Citations
3,687 Views
15 Pages

19 December 2021

The paper discusses two mathematical models for the air flow through a plate heat exchanger with parallel plates. The first exhausts the used air and then supplies the fresh air. The second exhausts the used air above the plate and simultaneously sup...

  • Article
  • Open Access
14 Citations
6,469 Views
21 Pages

19 December 2021

This paper presents an experimental study on a shell and tube mini heat exchanger (STMHE). The STMHE consisted of seven tubes in a triangular arrangement, with an 0.8 mm inner diameter and 1.0 mm outer diameter. The heat exchanger shell had an inner...

  • Article
  • Open Access
20 Citations
5,300 Views
23 Pages

Potential Energy Savings from Circular Economy Scenarios Based on Construction and Agri-Food Waste in Italy

  • Patrizia Ghisellini,
  • Amos Ncube,
  • Gianni D’Ambrosio,
  • Renato Passaro and
  • Sergio Ulgiati

19 December 2021

In this study, our aim was to explore the potential energy savings obtainable from the recycling of 1 tonne of Construction and Demolition Waste (C&DW) generated in the Metropolitan City of Naples. The main fraction composing the functional unit...

  • Article
  • Open Access
9 Citations
3,435 Views
20 Pages

19 December 2021

To predict the temperature distribution of the tooth surface of a herringbone gear pair, a numerical method for the determination of frictional heat generation was proposed by establishing a thermal elastohydrodynamic lubrication (TEHL) model in the...

  • Article
  • Open Access
9 Citations
2,593 Views
17 Pages

19 December 2021

This paper addresses the impact of location on energy management and ground heat transfer in a commercial large-scale broiler house. Four locations in Europe were selected for analysis: Krakow (Poland), Vienna (Austria), Modena (Italy), and Oslo (Nor...

  • Article
  • Open Access
4 Citations
4,331 Views
21 Pages

Implementation of a Multi-Zone Numerical Blow-by Model and Its Integration with CFD Simulations for Estimating Collateral Mass and Heat Fluxes in Optical Engines

  • Edoardo De Renzis,
  • Valerio Mariani,
  • Gian Marco Bianchi,
  • Giulio Cazzoli,
  • Stefania Falfari,
  • Christian Antetomaso and
  • Adrian Irimescu

19 December 2021

Nowadays reducing green-house gas emissions and pushing the fossil fuel savings in the field of light-duty vehicles is compulsory to slow down climate change. To this aim, the use of new combustion modes and dilution strategies to increase the stabil...

  • Article
  • Open Access
22 Citations
4,133 Views
24 Pages

19 December 2021

The effective operation of photovoltaic systems depends on many factors and parameters that must be continuously monitored. The factors listed in the article are frequently variable, which makes it very difficult to predict the amount of radiation th...

  • Article
  • Open Access
4 Citations
3,326 Views
22 Pages

Area under Rapeseed Cultivation as a Factor Differentiating the Economic Performance of Biodiesel Producers

  • Aneta Bełdycka-Bórawska,
  • Krzysztof Józef Jankowski,
  • Tomasz Rokicki and
  • Michał Gostkowski

19 December 2021

The aim of this study was to assess the impact of the area under rapeseed cultivation on the economic performance and organization of farms. The study was conducted in 164 rapeseed farms in different Polish voivodeships. A targeted sampling procedure...

  • Article
  • Open Access
8 Citations
3,211 Views
15 Pages

19 December 2021

This paper presents the analysis, modeling, simulation and practical studies of resonant inverters with a voltage limitation on the resonant capacitor. The power circuits obtained in this way are characterized by the fact that the power consumption d...

  • Article
  • Open Access
7 Citations
4,127 Views
20 Pages

19 December 2021

This article presents a case study of a single-family house with several photovoltaic micro-installations oriented in different directions, in which the energy electricity storage systems have been operating for several months. In the house, the heat...

  • Article
  • Open Access
7 Citations
5,746 Views
19 Pages

Field Study on Energy-Saving Behaviour and Patterns of Air-Conditioning Use in a Condominium

  • Kazui Yoshida,
  • Hom B. Rijal,
  • Kazuaki Bogaki,
  • Ayako Mikami and
  • Hiroto Abe

19 December 2021

In the international movement to combat the threat of climate change, the timely implementation of residential energy-saving practises is becoming an urgent issue. Because the number of apartments is increasing, we analysed data from home energy mana...

  • Article
  • Open Access
5 Citations
2,909 Views
11 Pages

19 December 2021

Tar remaining in the gasification cavity during underground coal gasification (UCG) is an important pollution source, while the reported studies only focus on the tar behavior at the outlet. The present work aims to compare the tar properties from th...

  • Article
  • Open Access
2 Citations
6,696 Views
18 Pages

How to Adapt Mongolian Yurt to the Modern Requirements and European Climate—Airtightness versus CO2 Concentration?

  • Tomasz Kisilewicz,
  • Katarzyna Nowak-Dzieszko,
  • Katarzyna Nowak,
  • Sabina Kuc,
  • Ksenia Ostrowska and
  • Piotr Śliwiński

18 December 2021

There are currently trends in the world to transfer and adapt traditional solutions to contemporary needs. This applies, inter alia, to mobile shelters used by nomadic peoples. The article is devoted to the research on the quality of internal air in...

  • Article
  • Open Access
1 Citations
3,031 Views
26 Pages

18 December 2021

This study evaluates the effects of pooling heat demands in a district for the purpose of upscaling heat production units by means of energy, exergy, economic, exergoeconomic, and environmental indicators, as well as the sensitivity to investment and...

  • Article
  • Open Access
12 Citations
4,847 Views
18 Pages

EMT Real-Time Simulation Model of a 2 GW Offshore Renewable Energy Hub Integrating Electrolysers

  • Jane Marchand,
  • Ajay Shetgaonkar,
  • Jose Luis Rueda Torres,
  • Aleksandra Lekic and
  • Peter Palensky

18 December 2021

Due to their weak nature, such as low inertia, offshore energy hubs are prone to unprecedented fast dynamic phenomena. This can lead to undesired instability problems. Recent literature, with main focus on onshore systems, suggests that electrolysers...

  • Article
  • Open Access
12 Citations
4,085 Views
22 Pages

18 December 2021

This work investigates loss model sets based on empirical loss correlations for subsonic centrifugal compressors. These loss models in combination with off-design performance prediction algorithms make up an essential tool in predicting off-design be...

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Energies - ISSN 1996-1073