Article
Energy & Fuels
Yongliang Xie, Na Lv, Xujiang Wang, Dejian Wu, Shimao Wang
Summary: This study conducted a numerical research on the effects of longitudinal ventilation strategies on hydrogen jet flames in tunnels, showing that ventilation greatly influences the flame characteristics. Critical ventilation velocity increases with hydrogen leakage rates and the predicted theoretical model can accurately predict critical ventilation velocity for hydrogen jet fires. Increasing longitudinal ventilation velocity significantly reduces maximum ceiling temperatures and impacts flame bending characteristics.
Article
Chemistry, Physical
M. L. Blaylock, L. E. Klebanoff
Summary: This study examines the release of hydrogen associated with hydrogen fuel cell technology on vessels. The results show that the release of hydrogen is influenced by the hydrogen exit speed and wind speed under certain conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
William Buttner, Jonathan Hall, Simon Coldrick, Phil Hooker, Tashi Wischmeyer
Summary: The research focuses on studying the behavior of liquid hydrogen releases to enhance the safe use of hydrogen as an energy carrier. Through field experiments, model development, and monitoring methods like HyWAM, the aim is to elucidate the release behavior of liquid hydrogen.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Yubo Bi, Qiulan Wu, Shilu Wang, Jihao Shi, Haiyong Cong, Lili Ye, Wei Gao, Mingshu Bi
Summary: This paper proposes a hybrid model based on deep learning for accurately predicting the location of hydrogen leakage in hydrogen refueling stations. The model utilizes data noise reduction and feature extraction techniques to improve prediction performance, achieving excellent results.
Article
Chemistry, Physical
Yongjun Li, Zhirong Wang, Xuemeng Shi, Rujia Fan
Summary: This paper numerically investigates the leakage and dispersion of hydrogen gas in a mobile hydrogen refueling station. The research focuses on the geometry derived from a Chinese mobile hydrogen refueling station and verifies the numerical models with experimental data. The study analyzes the combustible danger region, hydrogen concentration distribution, and the volume of hydrogen gas cloud. The effects of leakage positions and flow rates on hydrogen diffusion in the mobile station and open space are analyzed. The findings provide significant references for explosion and risk assessment studies of mobile hydrogen refueling stations.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Organic
Lucie Wohlrabova, Jana Okorocenkova, Eduardo Palao, Erika Kuzmova, Karel Chalupsky, Petr Klan, Tomas Slanina
Summary: In this study, it was discovered that sulfonothioated BODIPY can cleave a sulfonylthio group from the meso-methyl position with a 10-fold higher quantum yield than previously studied leaving groups. The photocleavage was observed in both solution and cells, and it led to the controlled release of H2Sn. Therefore, sulfonothioated BODIPY has potential applications in cell signaling, redox homeostasis, and metabolic regulation studies.
Article
Engineering, Civil
Randy C. Shurtz, Alexander L. Brown, Lynelle K. Takahashi, Eric N. Coker
Summary: This paper investigates the conversion fraction of tritium to the water form in a fire scenario, which is one of the key metrics for radiological safety assessments. Measurements of oxidation rates for non-radioactive hydrogen isotopes are used to extrapolate a model suitable for tritium. CFD simulations demonstrate the significant impact of accurate kinetic models on the simulated conversion outcome.
FIRE SAFETY JOURNAL
(2023)
Review
Chemistry, Physical
Fuyuan Yang, Tianze Wang, Xintao Deng, Jian Dang, Zhaoyuan Huang, Song Hu, Yangyang Li, Minggao Ouyang
Summary: The development and application of hydrogen energy hold promise for effectively addressing issues of energy waste and pollution in various industries, but the inherent characteristics of hydrogen make it challenging to ensure high safety during production, transportation, storage, and utilization. Therefore, key safety issues such as hydrogen leakage and diffusion, ignition, and explosion must be carefully analyzed and addressed to guarantee the safe and reliable utilization of hydrogen.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Tao Shu, Yuan Xue, Wenkai Liang, Zhuyin Ren
Summary: The modified models MLC and MNQ show improved accuracy in predicting flame speeds and Markstein lengths, especially for lean hydrogen/air flames. As pressure increases, both unmodified and modified models can reduce uncertainty and the impact of finite flame structure becomes less significant.
COMBUSTION AND FLAME
(2021)
Article
Geosciences, Multidisciplinary
Nicholas Santella
Summary: Natural hazards are responsible for 1 to 7 percent of hazmat releases reported in the US annually. The frequency of these releases caused by natural hazards has increased over the years, primarily due to the impact of hurricanes, floods, storms, and wind. The variability of these releases is linked to extreme weather events and climate indices. It is essential to pay greater attention to managing natural hazard risks, especially in bulk storage facilities, to prevent further escalation in the occurrence and severity of these events.
Article
Chemistry, Physical
K. M. Gitushi, M. L. Blaylock, L. E. Klebanoff
Summary: This study investigates the effects of hydrogen leaks on the flammable region inside a fuel cell room using computational fluid dynamics modeling. The results show that the size of the flammable region is initially limited by self-induced entrainment and recirculation of air caused by the buoyant rising of hydrogen. Ventilation has an impact on the stability of the flammable region. By adjusting the ventilation rate and leak level, timely hydrogen evacuation and leak detection can be achieved.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Yuejuan Li, Xulei Hou, Cheng Wang, Qiubo Wang, Wei Qi, Jianwei Li, Xiaolu Zhang
Summary: This study investigates the influence of obstacle locations on the hydrogen diffusion behavior in a simplified cuboid enclosure with obstacles. The results show that obstacle positions affect the time for hydrogen to reach the ceiling and sidewalls, and the presence of obstacles increases the size of the flammable zone in the enclosure.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Wesley R. Boyette, Scott A. Steinmetz, Thibault F. Guiberti, Matthew J. Dunn, William L. Roberts, Assaad R. Masri
Summary: This study investigates the effects of hydrogen and ammonia on soot production in turbulent flames, finding that hydrogen substitution increases soot production while ammonia substitution inhibits it. The results show that peak mean soot volume fraction is significantly lower in cases where ammonia is substituted for nitrogen, indicating the formation of smaller soot nanoparticles.
COMBUSTION AND FLAME
(2021)
Article
Engineering, Industrial
Muhammad Gibran Alfarizi, Federico Ustolin, Jorn Vatn, Shen Yin, Nicola Paltrinieri
Summary: Hydrogen is a clean alternative to hydrocarbon fuels in the marine industry. Liquid hydrogen can be used to transport and store large quantities of hydrogen. However, further research is needed to assess the potential risks and safety measures for this novel application.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2023)
Article
Chemistry, Physical
Wenhao Yuan, Jingfeng Li, Ruiping Zhang, Xinkun Li, Junlong Xie, Jianye Chen
Summary: This study assesses the risks of hydrogen leakage in a liquid hydrogen refueling station in Pinghu, China and investigates the factors that affect the consequences of the leakage. The results show that factors such as wind direction, layout, and leakage parameters have an impact on the consequences of the LH2 leakage, and suggest measures to reduce explosion hazards.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)