Special Issue "Modelling, Simulation and Control in Combustion Processes of Renewable Fuels"

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Green Processes".

Deadline for manuscript submissions: 1 September 2021.

Special Issue Editors

Prof. Dr. Ján Piteľ
Website
Guest Editor
Department of Industrial Engineering and Informatics, Technical University of Kosice, Presov 080 01, Slovakia
Interests: Modelling; Simulation; and Control of Machines and Processes
Assoc. Prof. Dr. Jan Hrdlička
Website
Guest Editor
Department of Energy Engineering, Czech Technical University in Prague, Prague, 166 07, Czech Republic
Interests: Combustion Processes of Solid Fuels in Fluidized Bed; Emission Control; Carbon Capture and Storage/Utilization
Assoc. Prof. Dr. Ivan Pavlenko
Website
Guest Editor
Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, Sumy, 40007, Ukraine
Interests: Numerical Simulation and Experimental Research of Hydrodynamic; Heat and Mass Transfer Processes

Special Issue Information

Dear Colleagues,

The modelling and simulation of combustion processes is still a challenging field. In principle, it requires the integration of heat and mass transfer, flow conditions, and reaction chemistry. Available tools for such modelling are very different, and are usually problem-specific. One special field of interest is fluidized bed combustion of solid fuels, which additionally encounter the fluidized bed hydrodynamics and particle interactions. Recent trends in the field are focusing on more detailed description and understanding of burn-out mechanism of solid fuel particles, which is essential for modelling to have reasonable outputs. From a control point of view, dynamic models of combustion processes are very important, for example, in model-based control algorithms. Due to their complexity, dynamic modelling based on partial differential equations and parameter identification for the corresponding transient models is a topical problem, which can be solved using a comprehensive approach based on experimental data, numerical simulation, regression modeling, and also artificial intelligence methods. One common challenge is validation of the models in real process, which requires in-depth and precise measurements that is typically complicated by limited access into the combustion process zone. This information is important also for control and monitoring of the combustion processes.

This Special Issue on “Modelling, Simulation and Control in Combustion Processes of Renewable Fuels” aims to curate novel advances in the development and application of computational modelling and advanced control to address longstanding challenges in energy efficiency increase and environmental pollution decrease arising also from renewable fuels combustion. Topics include, but are not limited to:

  • Description of current problems in combustion processes of renewable fuels and possible solutions;
  • Up-to-date tools for reaction chemistry modelling and flow, heat and mass transfer simulation during combustion processes
  • Numerical simulation of transient combustion processes
  • Parameter identification for models of combustion processes
  • Advanced control algorithms of combustion processes
  • Sensors for monitoring and control of combustion processes
Prof. Dr. Ján Piteľ
Assoc. Prof. Dr. Jan Hrdlička
Assoc. Prof. Dr. Ivan Pavlenko
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Processes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Combustion
  • Processes
  • Renewable Fuels
  • Modelling
  • Simulation
  • Control
  • Monitoring
  • Sensors

Published Papers (4 papers)

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Research

Open AccessArticle
Isothermal Kinetic Analysis of the Thermal Decomposition of Wood Chips from an Apple Tree
Processes 2021, 9(2), 195; https://doi.org/10.3390/pr9020195 - 21 Jan 2021
Viewed by 222
Abstract
The thermal decomposition of wood chips from an apple tree is studied in a static air atmosphere under isothermal conditions. Based on the thermogravimetric analysis, the values of the apparent activation energy and pre-exponential factor are 34 ± 3 kJ mol−1 and [...] Read more.
The thermal decomposition of wood chips from an apple tree is studied in a static air atmosphere under isothermal conditions. Based on the thermogravimetric analysis, the values of the apparent activation energy and pre-exponential factor are 34 ± 3 kJ mol−1 and 391 ± 2 min−1, respectively. These results have also shown that this process can be described by the rate of the first-order chemical reaction. This reaction model is valid only for a temperature range of 250–290 °C, mainly due to the lignin decomposition. The obtained results are used for kinetic prediction, which is compared with the measurement. The results show that the reaction is slower at higher values of degree of conversion, which is caused by the influence of the experimental condition. Nevertheless, the obtained kinetic parameters could be used for the optimization of the combustion process of wood chips in small-scale biomass boilers. Full article
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Open AccessArticle
A Numerical Study on the Pilot Injection Conditions of a Marine 2-Stroke Lean-Burn Dual Fuel Engine
Processes 2020, 8(11), 1396; https://doi.org/10.3390/pr8111396 - 02 Nov 2020
Cited by 1 | Viewed by 391
Abstract
The global demand for clean fuels is increasing in order to meet the requirements of the International Maritime Organization (IMO) of 0.5% global Sulphur cap and Tier III emission limits. Natural gas has begun to be popularized on liquefied natural gas (LNG) ships [...] Read more.
The global demand for clean fuels is increasing in order to meet the requirements of the International Maritime Organization (IMO) of 0.5% global Sulphur cap and Tier III emission limits. Natural gas has begun to be popularized on liquefied natural gas (LNG) ships because of its low cost and environment friendly. In large-bore marine engines, ignition with pilot fuel in the prechamber is a good way to reduce combustion variability and extend the lean-burn limit. However, the occurrence of knock limits the increase in power. Therefore, this paper investigates the effect of pilot fuel injection conditions on performance and knocking of a marine 2-stroke low-pressure dual-fuel (LP-DF) engine. The engine simulations were performed under different pilot fuel parameters. The results showed that the average in-cylinder temperature, the average in-cylinder pressure, and the NOx emissions gradually decreased with the delay of the pilot injection timing. Furthermore, the combustion situation gradually deteriorated as the pilot injection duration increased. A shorter pilot injection duration was beneficial to reduce NOx pollutant emissions. Moreover, the number of pilot injector orifices affected the ignition of pilot fuel and the flame propagation speed inside the combustion chamber. Full article
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Open AccessArticle
A Numerical Investigation on De-NOx Technology and Abnormal Combustion Control for a Hydrogen Engine with EGR System
Processes 2020, 8(9), 1178; https://doi.org/10.3390/pr8091178 - 17 Sep 2020
Viewed by 543
Abstract
The combustion emissions of the hydrogen-fueled engines are very clean, but the problems of abnormal combustion and high NOx emissions limit their applications. Nowadays hydrogen engines use exhaust gas recirculation (EGR) technology to control the intensity of premixed combustion and reduce the NOx [...] Read more.
The combustion emissions of the hydrogen-fueled engines are very clean, but the problems of abnormal combustion and high NOx emissions limit their applications. Nowadays hydrogen engines use exhaust gas recirculation (EGR) technology to control the intensity of premixed combustion and reduce the NOx emissions. This study aims at improving the abnormal combustion and decreasing the NOx emissions of the hydrogen engine by applying a three-dimensional (3D) computational fluid dynamics (CFD) model of a single-cylinder hydrogen-fueled engine equipped with an EGR system. The results indicated that peak in-cylinder pressure continuously increased with the increase of the ignition advance angle and was closer to the top dead center (TDC). In addition, the mixture was burned violently near the theoretical air–fuel ratio, and the combustion duration was shortened. Moreover, the NOx emissions, the average pressure, and the in-cylinder temperature decreased as the EGR ratio increased. Furthermore, increasing the EGR ratio led to an increase in the combustion duration and a decrease in the peak heat release rate. EGR system could delay the spontaneous combustion reaction of the end-gas and reduce the probability of knocking. The pressure rise rate was controlled and the in-cylinder hot spots were reduced by the EGR system, which could suppress the occurrence of the pre-ignition in the hydrogen engine. Full article
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Open AccessArticle
Numerical Investigation of a Portable Incinerator: A Parametric Study
Processes 2020, 8(8), 923; https://doi.org/10.3390/pr8080923 - 02 Aug 2020
Viewed by 638
Abstract
The application of incinerators for the municipal solid waste (MSW) is growing due to the ability of such instruments to produce energy and, more specifically, reduce waste volume. In this paper, a numerical simulation of the combustion process with the help of the [...] Read more.
The application of incinerators for the municipal solid waste (MSW) is growing due to the ability of such instruments to produce energy and, more specifically, reduce waste volume. In this paper, a numerical simulation of the combustion process with the help of the computational fluid dynamics (CFD) inside a portable (mobile) incinerator has been proposed. Such work is done to investigate the most critical parameters for a reliable design of a domestic portable incinerator, which is suitable for the Iranian food and waste culture. An old design of a simple incinerator has been used to apply the natural gas (NG), one of the available cheap fossil fuels in Iran. After that, the waste height, place of the primary burner, and the flow rate of the cooling air inside the incinerator, as the main parameters of the design, are investigated. A validation is also performed for the mesh quality test and the occurrence of the chemical reactions near the burner of the incinerator. Results proved that the numerical results have less than 5% error compared to the previous experimental and numerical approaches. In addition, results show that by moving the primary burner into the secondary chamber of the incinerator, the temperature and the heating ability of the incinerator could be affected dramatically. Moreover, it has been found that by increasing the flow rate of the cooling air inside the incinerator to some extent, the combustion process is improved and, on the other hand, by introducing more cooling air, the evacuation of the hazardous gases from the exhaust is also improved. Full article
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