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Heat Transfer Analysis and Modeling in Furnaces and Boilers

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "J1: Heat and Mass Transfer".

Deadline for manuscript submissions: closed (26 July 2023) | Viewed by 12493

Special Issue Editors


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Guest Editor
Istituto di Scienze e Tecnologie per l'Energia e la Mobilità Sostenibili (STEMS)-CNR, Viale Marconi, 4, 80125 Naples, Italy
Interests: low-emission combustion technologies; turbulent combustion modeling; heat transfer modeling; CFD of reactive flows; optical diagnostics; spray atomization
Special Issues, Collections and Topics in MDPI journals
Institute for Research on Combustion, CNR, Piazzale V. Tecchio 80, 80125 Napoli, Italia
Interests: combustion; low-emission combustion technologies; combustion chemistry; pollutant formation and abatement; heat transfer modeling; design of lab-scale burner and model reactors

Special Issue Information

Dear Colleagues,

The Guest Editors are inviting submissions to a Special Issue of Energies on the subject area of “Heat Transfer Analysis and Modeling in Furnaces and Boilers”.

The analysis and modeling of heat transfer phenomena are fundamental steps to ensure efficient heat exchange in several types of equipment, such as furnaces and boilers. They are of paramount importance to reduce energy consumption, improve energy savings, and to reduce emissions and pollutions from energy systems.

It is a multidisciplinary topic covering conduction, convective and radiating phenomena, to be coupled with complex fluid dynamic patterns and combustion chemistry.

This Special Issue aims to present recent advances in heat transfer analysis and modeling for sustainable development of furnaces and boilers.

We invite investigators to contribute with original research articles as well as review articles describing current research and expected challenges regarding transfer phenomena in boilers, furnaces, and hybrid energy systems, such as solar or nuclear ones. Contributions on heat transfer analysis for energy storage and conversion are also requested for this Special Issue.

Theoretical, experimental, and computational papers are welcome.

Topics of interest for publication include but are not limited to:

  • Fundamental research (convective, conductive, and radiative) on heat transfer mechanisms in boiler and furnaces;
  • Computational coupling among heat transfer modes, fluid dynamics, and combustion chemistry;
  • Laminar/turbulent flows and heat transfer;
  • Optimization in thermal engineering;
  • Radiative heat transfer analysis in boilers and furnaces;
  • Modeling and theoretical analysis for heat transfer enhancement techniques, energy saving, and flue gas cleaning;
  • Heat transfer analysis and modeling for sustainable energy technology—fuel cells, solar energy, energy storage, etc.;
  • Reactive flows and combustion heat transfer;
  • Energy recovery and heat integration in hybrid energy systems (solar, nuclear, etc.);
  • Heat transfer evaluation in industrial biomass and solid fuel boilers.

Dr. Giancarlo Sorrentino
Dr. Pino Sabia
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 submissions that pass pre-check are 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. Energies is an international peer-reviewed open access semimonthly 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 2600 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

  • Heat transfer modeling
  • Thermal engineering
  • Heat transfer in energy systems
  • Heat transfer for energy recovery and storage
  • Furnace and boiler design.

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Published Papers (5 papers)

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Research

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18 pages, 5133 KiB  
Article
Influence of Spacers and Skid Sizes on Heat Treatment of Large Forgings within an Industrial Electric Furnace
by Sajad Mirzaei, Nima Bohlooli Arkhazloo, Farzad Bazdidi-Tehrani, Jean-Benoit Morin, Abdelhalim Loucif and Mohammad Jahazi
Energies 2023, 16(7), 2936; https://doi.org/10.3390/en16072936 - 23 Mar 2023
Cited by 2 | Viewed by 2059
Abstract
The influence of stacking patterns, through the different spacer and skid sizes, on the transient temperature distribution uniformity of large-size forgings in a 112-m3 electrical heat treatment furnace was investigated by conducting CFD simulations and real-scale experimental validation. A 3D CFD model [...] Read more.
The influence of stacking patterns, through the different spacer and skid sizes, on the transient temperature distribution uniformity of large-size forgings in a 112-m3 electrical heat treatment furnace was investigated by conducting CFD simulations and real-scale experimental validation. A 3D CFD model of the electrical furnace was generated, including a heat-treating chamber, axial flow fans, large size blocks, skids, and spacers. Real-scale temperature measurements on instrumented test blocks during the heat treatment process were carried out to validate the CFD simulations. Results indicated that the CFD model was capable enough to determine the transient temperature evolution of the blocks with a maximum average deviation of about 6.62% compared to the experimental measurements. It was found that significant temperature non-uniformities of up to 379 K on the surfaces of the blocks due to the non-optimum stacking pattern were experienced by the blocks. Such non-uniformities could be reduced between 24% to 32% if well-adapted spacer and skid sizes were used in the stacking configurations. Based on simulation results and experimental validation work, optimum spacer and skid sizes for uniform temperature distribution were proposed for different stacking patterns. Full article
(This article belongs to the Special Issue Heat Transfer Analysis and Modeling in Furnaces and Boilers)
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14 pages, 8071 KiB  
Article
Digital Twin for Experimental Data Fusion Applied to a Semi-Industrial Furnace Fed with H2-Rich Fuel Mixtures
by Alberto Procacci, Marianna Cafiero, Saurabh Sharma, Muhammad Mustafa Kamal, Axel Coussement and Alessandro Parente
Energies 2023, 16(2), 662; https://doi.org/10.3390/en16020662 - 5 Jan 2023
Cited by 7 | Viewed by 2284
Abstract
The objective of this work is to build a Digital Twin of a semi-industrial furnace using Gaussian Process Regression coupled with dimensionality reduction via Proper Orthogonal Decomposition. The Digital Twin is capable of integrating different sources of information, such as temperature, chemiluminescence intensity [...] Read more.
The objective of this work is to build a Digital Twin of a semi-industrial furnace using Gaussian Process Regression coupled with dimensionality reduction via Proper Orthogonal Decomposition. The Digital Twin is capable of integrating different sources of information, such as temperature, chemiluminescence intensity and species concentration at the outlet. The parameters selected to build the design space are the equivalence ratio and the benzene concentration in the fuel stream. The fuel consists of a H2/CH4/CO blend, doped with a progressive addition of C6H6. It is an H2-rich fuel mixture, representing a surrogate of a more complex Coke Oven Gas industrial mixture. The experimental measurements include the flame temperature distribution, measured on a 6×8 grid using an air-cooled suction pyrometer, spatially resolved chemiluminescence measurements of OH* and CH*, and the species concentration (i.e., NO, NO2, CO, H2O, CO2, O2) measured in the exhaust gases. The GPR-based Digital Twin approach has already been successfully applied on numerical datasets coming from CFD simulations. In this work, we demonstrate that the same approach can be applied on heterogeneous datasets, obtained from experimental measurements. Full article
(This article belongs to the Special Issue Heat Transfer Analysis and Modeling in Furnaces and Boilers)
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25 pages, 9580 KiB  
Article
Comparative Analysis of Numerical Methods for Simulating N-Heptane Combustion with Steam Additive
by Andrey V. Minakov, Viktor A. Kuznetsov, Artem A. Dekterev, Igor S. Anufriev, Evgeny P. Kopyev and Sergey V. Alekseenko
Energies 2023, 16(1), 25; https://doi.org/10.3390/en16010025 - 20 Dec 2022
Cited by 5 | Viewed by 1759
Abstract
Currently, thermal power plants operating on hydrocarbon fuels (gas, fuel oil, peat, shale, etc.) are one of the main sources of electricity. An effective and promising method for suppressing harmful emissions (NOx, carbon oxides, soot) from the combustion of fossil fuels [...] Read more.
Currently, thermal power plants operating on hydrocarbon fuels (gas, fuel oil, peat, shale, etc.) are one of the main sources of electricity. An effective and promising method for suppressing harmful emissions (NOx, carbon oxides, soot) from the combustion of fossil fuels is the injection of steam into the combustion chamber. The influence of various mathematical submodels was studied on the accuracy of the numerical simulation of the process of n-heptane combustion in a laboratory burner with steam additive to the reaction zone as a promising chemical engineering method for the disposal of substandard liquid fuels and combustible waste with the production of thermal energy. The problem was solved in a three-dimensional stationary formulation. Systematic verification of these submodels, and a comparison of the results of the calculation with the experimental data obtained were carried out. The comparison with the experimental data was carried out for gas components and temperature distribution at the burner outlet; high agreement of the results was achieved. Optimal submodels of the methodology for calculating the process of fuel combustion in a jet of steam were determined. The best agreement with the experiment data was obtained using the EDC model in combination with a mechanism consisting of 60 components and 305 elementary reactions. More correct simulation results were obtained using the RSM turbulence model and the DO radiation model. Full article
(This article belongs to the Special Issue Heat Transfer Analysis and Modeling in Furnaces and Boilers)
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19 pages, 8390 KiB  
Article
Development of an Efficient Modelling Approach for Fin-Type Heat-Exchangers in Self-Recuperative Burners
by Nicolas Dinsing, Nico Schmitz, Christian Schubert and Herbert Pfeifer
Energies 2021, 14(21), 6873; https://doi.org/10.3390/en14216873 - 20 Oct 2021
Cited by 2 | Viewed by 2024
Abstract
Self-recuperative burners are a common solution for efficient combustion systems in industrial furnaces. Due to the geometric complexity of the recuperators, a detailed CFD simulation is computationally expensive and not feasible for simulation models of burner-integrated systems such as radiant tubes. Especially in [...] Read more.
Self-recuperative burners are a common solution for efficient combustion systems in industrial furnaces. Due to the geometric complexity of the recuperators, a detailed CFD simulation is computationally expensive and not feasible for simulation models of burner-integrated systems such as radiant tubes. Especially in the FSI studies of radiant tubes, the temperature of the radiant tube surrounding the burner is decisive for the final results. The exclusion of the recuperator from the simulation models introduces significant uncertainties in the simulations results. The presented paper describes an innovative, efficient approach to model a fin-type recuperator in which the recuperator is geometrically reduced. The resulting acceleration of the numerical simulation makes a fully dynamic modelling of the recuperator in a radiant tube simulation possible. Specifically designed source terms are used to model pressure loss and heat transfer inside the recuperator to match results obtained with a detailed simulation model. The results show deviations in total heat transfer of less than 1.3% with a 98.5% reduction of numerical mesh size. The computational savings enable comprehensive modelling of air preheat for radiant tube simulations and accurately replicate flow and temperature profiles in the recuperator. Full article
(This article belongs to the Special Issue Heat Transfer Analysis and Modeling in Furnaces and Boilers)
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Review

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49 pages, 4168 KiB  
Review
Heat Transfer Analysis Using Thermofluid Network Models for Industrial Biomass and Utility Scale Coal-Fired Boilers
by Pieter Rousseau, Ryno Laubscher and Brad Travis Rawlins
Energies 2023, 16(4), 1741; https://doi.org/10.3390/en16041741 - 9 Feb 2023
Cited by 4 | Viewed by 2685
Abstract
Integrated whole-boiler process models are useful in the design of biomass and coal-fired boilers, and they can also be used to analyse different scenarios such as low load operation and alternate fuel firing. Whereas CFD models are typically applied to analyse the detail [...] Read more.
Integrated whole-boiler process models are useful in the design of biomass and coal-fired boilers, and they can also be used to analyse different scenarios such as low load operation and alternate fuel firing. Whereas CFD models are typically applied to analyse the detail heat transfer phenomena in furnaces, analysis of the integrated whole-boiler performance requires one-dimensional thermofluid network models. These incorporate zero-dimensional furnace models combined with the solution of the fundamental mass, energy, and momentum balance equations for the different heat exchangers and fluid streams. This approach is not new, and there is a large amount of information available in textbooks and technical papers. However, the information is fragmented and incomplete and therefore difficult to follow and apply. The aim of this review paper is therefore to: (i) provide a review of recent literature to show how the different approaches to boiler modelling have been applied; (ii) to provide a review and clear description of the thermofluid network modelling methodology, including the simplifying assumptions and its implications; and (iii) to demonstrate the methodology by applying it to two case study boilers with different geometries, firing systems and fuels at various loads, and comparing the results to site measurements, which highlight important aspects of the methodology. The model results compare well with values obtained from site measurements and detail CFD models for full load and part load operation. The results show the importance of utilising the high particle load model for the effective emissivity and absorptivity of the flue gas and particle suspension rather than the standard model, especially in the case of a high ash fuel. It also shows that the projected method provides better results than the direct method for the furnace water wall heat transfer. Full article
(This article belongs to the Special Issue Heat Transfer Analysis and Modeling in Furnaces and Boilers)
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