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Fire
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Clean Combustion and New Energy
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Clean Combustion and New Energy

A special issue of Fire (ISSN 2571-6255). This special issue belongs to the section "Mathematical Modelling and Numerical Simulation of Combustion and Fire".

Deadline for manuscript submissions: 30 June 2025 | Viewed by 1268

Special Issue Editor

Dr. Huaming Dai

E-Mail Website
Guest Editor
School of Safety Science and Emergency Management, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China
Interests: efficient combustion; clean and new energy; carbon emission reduction; hydrogen production

Special Issue Information

Dear Colleagues,

The hazards of fossil energy combustion have become a global concern. Cleaner combustion and the utilization of new energy sources attract much attentions in order to meet the challenge of exacerbating environmental problems, such as global warming and air pollution, as a result of the greenhouse gases and other pollutants produced by its emissions.

The advantages of cleaner combustion and new energy sources lie in their diversity, environmental friendliness and sustainability. Clean combustion minimizes the emission of harmful gases and particulate matter through efficient combustion technologies and purification facilities, reducing the negative impact on the atmosphere. New energy covers renewable energy sources such as solar, wind and geothermal energy, the use of which reduces dependence on finite fossil energy sources and reduces the emission of pollutants while at the same time realizing the sustainability of energy supply.

The purpose of this Special Issue is to provide an overview of relevant directions in cleaner combustion and new energy utilization and conversion. Through in-depth study of chemical reaction mechanisms in the combustion process, optimization of fuel and oxidant combinations, and development of efficient energy conversion technologies, the cleaner, more efficient and sustainable use of energy can be further achieved. This Special Issue will cover the following topics related to clean combustion and new energy utilization and conversion:

  1. Greenhouse gas emission reduction technologies;
  2. Research and application of clean combustion technologies;
  3. Development and utilization of new energy sources;
  4. Materials and catalysts for energy conversion;
  5. Construction of sustainable energy supply chains;
  6. Hydrogen production and utilization;
  7. Application of renewable energy in industrial processes.

I look forward to receiving your submissions.

Dr. Huaming Dai
Guest Editor

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. Fire 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 2400 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

  • clean combustion
  • new energy
  • carbon reduction
  • heat and mass transfer
  • energy conversion and utilization
  • hydrogen energy
  • catalyst

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

14 pages, 9504 KiB  
Article
Experimental and Numerical Simulation Study of the Influence of Fe(C5H5)2-SiO2 Composite Dry Powders on Characteristics of Hydrogen/Methane/Air Explosion
by Zhiqian Zheng, Huiqian Liao, Hongfu Mi, Kaixuan Liao, Haoliang Zhang, Yi Li, Yanhui Ren, Zhijun Li, Nanfang Li and Wei Xia
Fire 2025, 8(5), 198; https://doi.org/10.3390/fire8050198 - 15 May 2025
Viewed by 85
Abstract
In order to ensure the safety of methane/hydrogen, regular SiO2 powder was modified. Fe(C5H5)2/SiO2 composite dry powder (CDP) was selected as the explosion-suppression material. Explosion-suppression experiments and numerical simulations were adopted to investigate the inhibition [...] Read more.
In order to ensure the safety of methane/hydrogen, regular SiO2 powder was modified. Fe(C5H5)2/SiO2 composite dry powder (CDP) was selected as the explosion-suppression material. Explosion-suppression experiments and numerical simulations were adopted to investigate the inhibition effect of 0% (XH2 = 0%) and 20% (XH2 = 20%) hydrogen doping ratios. The flame structure, flame propagation speed, and maximum explosion pressure are depicted to compare the inhibition effect of different mass fractions (XFe(C5H5)2 = 0–6%). The results showed that CDP significantly reduced the flame propagation velocity and maximum explosion pressure of XH2 = 0%. The best effect was observed when 6% Fe(C5H5)2 was added, with the velocity reduced to 9.241 m/s. The maximum explosion pressure was reduced to 0.518 MPa, and the effect was relatively weak for XH2 = 20%, with the maximum pressure reduced to 0.525 MPa. In addition, the key radical production and temperature sensitivity showed that Fe(C5H5)2 altered the molar fractions of the major species and increased the consumption of •H, •O, and •OH. As the mass fraction of Fe(C5H5)2 increased, the steady-state concentrations of •H, •O, and •OH in the system showed a significant decreasing trend. This phenomenon originated from the two-step synergistic mechanism of Fe(C5H5)2 inhibiting radical generation and accelerating radical consumption. This study provides insight into the process of Fe(C5H5)2/SiO2 composite dry powder inhibition and renders theoretical guidance for the explosion protection of methane/hydrogen. Full article
(This article belongs to the Special Issue Clean Combustion and New Energy)
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17 pages, 4871 KiB  
Article
Comparative Study on the Evolution of Airflow Temperature and Valid Ventilation Distance Under Different Cooling Strategies in High-Temperature Tunnels for Mining Thermal Energy
by Fangchao Kang, Jinlong Men, Binbin Qin, Guoxi Sun, Ruzhen Chen, Weikang Zhang, Jiamei Chen and Zhenpeng Ye
Fire 2025, 8(1), 16; https://doi.org/10.3390/fire8010016 - 3 Jan 2025
Viewed by 756
Abstract
A comprehensive understanding of airflow temperature distribution within high-temperature tunnels is crucial for developing effective cooling strategies that ensure a safe environment and acceptable construction costs. In this paper, we introduce a novel cooling strategy that integrates thermal insulation layers and heat exchangers [...] Read more.
A comprehensive understanding of airflow temperature distribution within high-temperature tunnels is crucial for developing effective cooling strategies that ensure a safe environment and acceptable construction costs. In this paper, we introduce a novel cooling strategy that integrates thermal insulation layers and heat exchangers aligned along the tunnel axis (TIL-HE strategy). We investigate variations in airflow temperature and valid ventilation distance (VVD) and compare them with two other cooling strategies: natural tunnels only employing mechanical ventilation (NT strategy) and tunnels featuring thermal insulation layers (TIL strategy), through the 3D k-ε turbulence model in COMSOL Multiphysics. Our findings indicate that (1) the TIL-HE strategy demonstrates superior cooling performance, resulting in significantly lower airflow temperatures and markedly higher VVD; (2) higher water velocity and more heat exchangers contribute to lower airflow temperature and prolonged VVD; (3) positioning the heat exchangers within the surrounding rock rather than inside the insulation layer leads to even lower airflow temperature and longer VVD. Longitudinal-arranged heat exchangers present fewer construction challenges compared to traditional radial-drilled ones, ultimately reducing tunnel construction costs. These findings provide valuable insights for optimizing cooling strategies and engineering parameters in high-temperature tunnel environments. Full article
(This article belongs to the Special Issue Clean Combustion and New Energy)
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