Article
Chemistry, Applied
Longjin Du, Jianzhong Liu, Binghong Chen, Zexu Li, Wei Juan Yang
Summary: In this study, B/EtOH/JP-10 suspension fuels with different EtOH contents were prepared and their ignition and combustion characteristics were investigated. The results show that the addition of EtOH changes the ignition pattern of B/JP-10 suspension fuel, shortening its ignition delay. EtOH enhances the microburst of fuel droplets in the early stage of combustion, improving the utilization of oxygen, and gradually breaks the agglomerates, promoting the contact between active boron and oxygen, thereby improving the overall energy release efficiency of the fuel.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Chemical
Longjin Du, Binghong Chen, Jianzhong Liu, Tingting Wu, Weijuan Yang
Summary: Al/JP-10 nanofluid fuel suffers from agglomeration and sedimentation, but this study improves the stability of the fuel system by modifying aluminum nanoparticles with different surfactants. The effects of surfactant molecules' carbon chain length, unsaturated bond, and adsorbent structure on the stability of the fuel system were examined for the first time from a molecular perspective. Span-65 modified aluminum nanoparticles (1 wt %) were found to be highly stable, and the mechanism by which Span-65 improves stability was proposed.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Energy & Fuels
Binghong Chen, Shiquan Shan, Jianzhong Liu
Summary: In this study, metal hydride was introduced into B/JP-10 suspension fuel to enhance its combustion characteristics. The addition of LiH showed the best performance, reducing the initial reaction temperature of boron and increasing the oxygen content in the residue. Thermodynamic calculations revealed the promotion mechanism of LiH on the energy release of the suspension fuel.
Article
Chemistry, Multidisciplinary
Qianmei Yang, Shengji Li, Linhui Ye, Xuefeng Huang
Summary: This study investigates the effect of aluminum (Al) and oleic acid concentrations on the stability, physical properties, evaporation, and microexplosion characteristics of an Al/JP-10/oleic acid nanofluid fuel system. Experimental results show that the optimal mass ratio of Al:oleic acid is 1:2 for Al concentrations below 2.5 wt.% and 1:2.5 for concentrations above 5.0 wt.% to achieve the best stability. With increasing concentrations, the evaporation rates decrease and microexplosions become more frequent and intense. At high ambient temperatures, the addition of oleic acid and Al nanoparticles compensates for the reduction in evaporation rate, improving the overall evaporation and microexplosion performance.
Article
Thermodynamics
Wen Ao, Zhimin Fan, Yi Gao, Yang Wang, Peijin Liu, Larry K. B. Li
Summary: This experimental study investigated the ignition and combustion of boron-based nanofluid fuel. It was found that adding boron nanoparticles can improve the combustion intensity without significantly affecting the oxidation and ignition characteristics. The co-existence of boron and oleic acid leads to more frequent and stronger disintegration of the nanofluid fuel droplet, while the addition of boron promotes ignition but this effect weakens with increasing boron concentration.
COMBUSTION AND FLAME
(2023)
Article
Engineering, Aerospace
Yushu Jin, Suyi Dou, Qingchun Yang, Xu Xu, Qingfei Fu, Lun Pan
Summary: The study investigates the performance of JP-10 slurry fuel containing aluminum nanoparticles in a scramjet engine, finding that the addition of nanoparticles significantly improves combustion efficiency and engine performance, particularly at an equivalence ratio of 0.56.
Article
Energy & Fuels
Bei-jing Zhong, Zhao-mei Zeng, Hou-zhen Zhang
Summary: This study focused on experimental measurements and development of a chemical kinetic model for JP-10 combustion. The model consisting of 189 species and 1287 reactions was validated using laminar flame speeds and literature data. Results showed that decomposition pathways of JP-10 mainly generate small molecules, cyclic C-5 alkenes, and aromatics, with different effects on global reaction rates.
Article
Chemistry, Physical
Souvick Biswas, Dababrata Paul, Chao He, Nureshan Dias, Musahid Ahmed, Michelle L. Pantoya, Ralf I. Kaiser
Summary: Researchers have discovered an active heterogeneous surface chemistry between aluminum nanoparticles (AlNPs) and alumina in hydrocarbon jet fuels, which challenges previous understanding of alumina’s reactivity.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Thermodynamics
LongJin Du, Jianzhong Liu, Binghong Chen, ZhiHao Sun, WeiJuan Yang
Summary: In this study, the surfaces of boron nanoparticles were modified by coating with LiF and AP to enhance the combustion performance and energy release. The effects of coating amount on the ignition temperature and burning intensity were investigated through thermogravimetric and laser ignition experiments.
COMBUSTION AND FLAME
(2023)
Article
Thermodynamics
Hangpeng Jiang, Wei Shen, Shijie Bai, Dongping Chen, Chenguang Wang, Xingyu Liang, Kun Wang
Summary: The recently-proposed HyChem approach achieved success in modeling the combustion chemistry of liquid jet fuels, but the role of oxygenated intermediates has not been examined. This study revised the HyChem model by jointly examining pyrolysis and oxidation experiment data to uncover the impact of critical oxygenated intermediates on combustion chemistry. The revised model showed improved predictions, especially for oxygenated intermediates, and was validated using speciation data and global combustion properties.
COMBUSTION AND FLAME
(2023)
Article
Energy & Fuels
Qi Jing, Dan Wang, Congling Shi
Summary: In this study, the deflagration and detonation properties of multiphase mixed fuels obtained by adding different morphologies and particle sizes of aluminum powder to the JP-10/DEE mixed fuel were investigated. Under weak ignition conditions, adding aluminum powder significantly increases the average burning rate and flame intensity of the multiphase mixed fuel. However, the addition of aluminum powder also leads to incomplete combustion and the generation of a large amount of soot in the oxygen-depleted state. Under strong ignition conditions, the DDT process of JP-10/DEE/aluminum powder can be divided into four stages, corresponding to four different pressure wave patterns.
Article
Energy & Fuels
Qi Jing, Dan Wang, Qingming Liu, Changqi Liu, Zhisong Wang, Zongling He, Zhou Yang
Summary: In this study, the deflagration propagation characteristics of JP-10/DEE mixtures were investigated through experiments. It was found that DEE can compensate for the ignition difficulty and incomplete combustion of JP-10, and has a synergistic enhancement effect. The results showed that with the increase of DEE concentration, the propagation speed of the primary flame increased, the induction time of the secondary flame was advanced, and the maximum deflagration intensity occurred at a fuel ratio of 0.6.
Article
Chemistry, Physical
Yucai Lu, Jiuyu Chen, Baozhong Zhu, Jiquan Wang, Cong Jiang, Minggao Xu, Yunlan Sun
Summary: By modifying the surface of aluminum nanoparticles with oleic acid, the dispersion and ignition performance of aluminum-based fuels can be improved. Oleic acid-modified aluminum nanoparticles can effectively protect the aluminum nanoparticles from deep oxidation at low temperatures, and accelerate the oxidative reaction of aluminum nanoparticles at high temperatures.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Thermodynamics
LongJin Du, Jianzhong Liu, ZeXu Li, WeiJuan Yang
Summary: This study investigates the effects of surfactant, temperature, particle concentration and particle size on the surface tension of B/JP-10 nanofluid fuels. The results show that the addition of surfactants helps to reduce the surface tension of the nanofluid fuel, while the surface tension is higher than that of pure JP-10 and increases with increasing particle concentration and decreases with increasing particle size. The surface tension of the suspended fuel decreases linearly with increasing temperature in a certain temperature range (10-60 degrees C).
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Energy & Fuels
Tinghao Jia, Qing Liu, Ji-Jun Zou, Xiangwen Zhang, Lun Pan
Summary: In this study, the dynamics and mechanism of JP-10 thermal oxidative deposition were investigated, and the results revealed the characteristics of the deposits and the influence of temperature on their formation. The stability of alkoxy radical was identified as an important factor affecting the thermal oxidation stability of HED fuels.
Article
Thermodynamics
Jian Zhong Liu, Bing Hong Chen, Ting Ting Wu, Wei Juan Yang, Jun Hu Zhou
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2019)
Article
Thermodynamics
Bing Hong Chen, Jian Zhong Liu, Wei Juan Yang, He Ping Li, Long Jin Du
COMBUSTION SCIENCE AND TECHNOLOGY
(2020)
Article
Thermodynamics
Bing H. Chen, Jian Z. Liu, Feng Yao, Yong He, Wei J. Yang
COMBUSTION AND FLAME
(2019)
Article
Chemistry, Physical
Bing Hong Chen, Jian Zhong Liu, Shi Quan Shan, Wei Juan Yang
Summary: The adsorption mechanism of oleic acid on the surface of aluminum nanoparticles was studied using ReaxFF molecular dynamics simulation. It was found that as the concentration of OA increased, the adsorption mechanism changed from chemical monolayer adsorption to chemical-physical bilayer adsorption.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Optics
Shiquan Shan, Binghong Chen, Zhijun Zhou, Yanwei Zhang
Summary: In this study, the spectral radiation characteristics of gaseous media during oxy-fuel combustion were investigated using the heat transfer method from the perspective of energy quality and utilization. It was found that temperature is the dominant influencing factor, and a model for predicting radiative exergy was proposed.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2021)
Article
Energy & Fuels
Shiquan Shan, Binghong Chen, Chunhui Shou
Summary: Through experimentation and analysis, this study found that NF-TPV combined with a water cooling system has optimal operating parameter ranges, which helps to achieve high efficiency and output power of the system.
Article
Thermodynamics
Shiquan Shan, Binghong Chen, Zhijun Zhou
Summary: This study introduces a novel NFTPV-TE hybrid system and analyzes its performance through numerical simulation, investigating the impact of operating parameters on system efficiency. The results show that the NFTPV-TE hybrid system outperforms single NFTPV system, suitable for solar energy conversion but not for low-temperature waste heat recovery.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Shiquan Shan, Binghong Chen, Zhijun Zhou, Yanwei Zhang
Summary: By studying the spectral radiation characteristics of semi-coke jet flame, this research found that the intensity of radiative energy and exergy increases with oxygen ratio and temperature. The spectral radiation below 1.1-3 micrometers shows high utilization potential and exergy-to-energy ratio can reach between 76% and 85% in the waveband below 3 micrometers. Temperature is the main factor affecting the radiation exergy.
Article
Energy & Fuels
Shiquan Shan, Qi Zhang, Binghong Chen, Gan He, Siqi Jia, Zhijun Zhou
Summary: This study investigates the energy conversion and performance analysis of solar thermo-photovoltaic (STPV) systems based on selective absorber/emitter using micro/nano materials. The study introduces two new concepts to evaluate the performance of the emitter and provides guidance for the design and application of STPV systems.
Article
Energy & Fuels
Binghong Chen, Shiquan Shan, Jianzhong Liu, Zhijun Zhou
Summary: A novel molten salt energy storage-solar thermophotovoltaic integrated system was proposed in this study, which can improve the efficiency of the system and increase the output power, showing promising application prospects in small-scale distributed energy utilization.
Article
Thermodynamics
Binghong Chen, Shiquan Shan, Jianzhong Liu
Summary: The research investigates the combustion characteristics of boron suspension fuel using a CO2 laser ignition test system, revealing the combustion process can be divided into different stages under full oxygen supply, and simultaneous combustion of boron and JP-10 can be achieved by controlling oxygen content.
COMBUSTION AND FLAME
(2022)
Article
Thermodynamics
Shiquan Shan, Jialu Tian, Binghong Chen, Yanwei Zhang, Zhijun Zhou
Summary: The mismatch between solar radiation spectrum and photovoltaic cells can be solved by solar spectrum-split conversion (SSSC) and solar thermophotovoltaic (STPV). This study compares these two technologies from the perspectives of thermodynamic evaluation and parameter analysis. Theoretical models are established to analyze the thermodynamic limitation and parameter optimization of the two technologies. The study finds that the SSSC system has a higher efficiency and provides guidance for the integrated utilization of solar energy.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Binghong Chen, Shiquan Shan, Jianzhong Liu
Summary: In this study, metal hydride was introduced into B/JP-10 suspension fuel to enhance its combustion characteristics. The addition of LiH showed the best performance, reducing the initial reaction temperature of boron and increasing the oxygen content in the residue. Thermodynamic calculations revealed the promotion mechanism of LiH on the energy release of the suspension fuel.
Article
Thermodynamics
Shiquan Shan, Binghong Chen
Summary: This paper studies the spectral radiation characteristics of gas-fuel combustion media through numerical calculation, analyzing the effects of temperature, pressure, path-length, and other parameters on the proportion of radiative energy and heat flux. The study also proposes methods to improve energy quality.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
