Article
Energy & Fuels
Yang Shen, Yuan-Bin Liu, Bing-Yang Cao
Summary: This study aims to develop accurate and independent surrogate models named C4+ for various thermophysical properties of aviation kerosene RP-3 at supercritical pressures. The surrogate models are optimized using a genetic algorithm to minimize the relative deviations between calculated and experimental data, with the addition of corrections for pyrolysis and autoxidation reactions. The prediction of the surrogate models shows overall good agreement with experimental measurements, demonstrating the highest accuracy among all simplified surrogate models.
Article
Engineering, Marine
Xiuxiu Sun, Mengmeng Wang, Incecik Atilla, Shizhe Feng, Zhixiong Li
Summary: A combustion mechanism based on a multi-component surrogate fuel was developed and validated for simulating diesel combustion process with high accuracy. The study indicates that the ratios of surrogate fuel components have a significant impact on the formation of NOx emissions.
Review
Energy & Fuels
S. Manigandan, Je Ir Ryu, T. R. Praveen Kumar, Mahmoud Elgendi
Summary: Renewable energy resources, such as hydrogen and ammonia fuels, have gained attention as sustainable alternatives to fossil fuels. While these fuels have shown effectiveness in diesel engines, their economic viability remains a concern. This review analyzes hydrogen and ammonia production methods and their effects on performance, combustion, and emissions in diesel engines. The findings suggest that further optimization is needed to realize the economic and societal benefits of these energy sources.
Article
Energy & Fuels
Nawar Al-Esawi, Mansour Al Qubeissi
Summary: The paper introduces a new approach using the Complex Fuel Surrogates Model to formulate fuel surrogates for gasoline, diesel, and their biofuel blends. The results show that this method can effectively match the data of different fuels and achieve good simulation results.
Article
Thermodynamics
Qiankun Zhang, Jin Xia, Zhuoyao He, Jianping Wang, Rui Liu, Liang Zheng, Yong Qian, Dehao Ju, Xingcai Lu
Summary: The purpose of this study is to explore the spray characteristics of six-component diesel surrogate fuel under sub/trans/supercritical conditions with different injection pressures. The results show that the properties of the liquid-phase spray are affected by ambient temperature and pressure, the spray cone angle is mainly influenced by ambient conditions, and the gas entrainment mass varies with changes in ambient temperature and pressure.
Article
Energy & Fuels
Shaodian Lin, Wanchen Sun, Liang Guo, Peng Cheng, Yuxiang Sun, Hao Zhang
Summary: The study develops a simplified mechanism for coal-to-liquid (CTL) and diesel surrogate fuels for 3D computational fluid dynamics (CFD) simulation, and validates it against experimental data to accurately predict conventional compression ignition (CI) combustion for both fuels. Using various reduction methods, different surrogate fuel compositions are determined and coupled to improve the accuracy of predicting combustion parameters. The research demonstrates the capability of the reduced mechanism to accurately predict combustion behavior with errors lower than 25% for medium loads.
Article
Energy & Fuels
Zhanming Chen, Jingjing He, Hao Chen, Limin Geng, Peng Zhang
Summary: A comparative study on the effects of energy substitution ratio (ESR) on the combustion characteristics and performance of a dual fuel engine fueled with diesel/alcohols was conducted. Premixed combustion of diesel was influenced by alcohol enrichment, affecting ignition delay and combustion duration. Methanol was found to be most beneficial in prolonging ignition delay and shortening combustion duration. Energy substitution ratio also affected brake thermal efficiency (BTE) and NOx emissions differently for different alcohol types.
Article
Energy & Fuels
Yongfei Zhu, Ming Jia, Bo Niu, Jiangping Tian, Haiying Li, Juting Fan
Summary: In this study, an optimized decoupling physical-chemical surrogate (DPCS) model was developed to effectively formulate different diesel surrogates. The model accurately predicted the physical-chemical properties and combustion behavior of the surrogates, and identified the factors influencing the characteristics of different diesel fuels.
Review
Thermodynamics
Anand Krishnasamy, Saurabh K. Gupta, Rolf D. Reitz
Summary: Low Temperature Combustion (LTC) strategies offer potential for reducing NOx and soot emissions from diesel engines while improving thermal efficiency, but face challenges such as precise ignition timing control and unburned fuel emissions. Addressing these challenges may require modifications to engine or fuel design, and exploring alternative fuels suitable for different LTC strategies.
INTERNATIONAL JOURNAL OF ENGINE RESEARCH
(2021)
Article
Energy & Fuels
Ali Diane, Gounkaou Woro Yomi, Sidiki Zongo, Tizane Daho, Herve Jeanmart
Summary: Gas from a small biomass gasification unit can be used as the main fuel in a dual-fuel engine for decentralized power generation in West Africa. Combustion analysis of the LPGN2 mixture in the engine showed similar overall behavior to diesel, with lower pressure peaks in dual-fuel mode. However, the engine exhibited longer ignition delay and diffusive combustion phase, resulting in lower indicated mean effective pressure and fuel efficiency. Dual-fuel operation also increased the coefficient of variation (COVIMEP) and led to higher CO emissions, slight reduction in CO2, and substantial decrease in nitrogen oxides compared to neat diesel.
Article
Green & Sustainable Science & Technology
Jianan Zhang, Yuesen Wang, Valerie L. Muldoon, Sili Deng
Summary: Biodiesels are crucial in achieving low-carbon transportation as renewable fuels. The utilization of crude glycerol, a waste byproduct, to produce glycerol for fuel purposes is an affordable and direct approach. Combining crude glycerol with solid fuels can improve combustion performance, while glycerol as an oxygenated fuel additive lowers NOx emissions.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Chemistry, Physical
Surya Kanth, Sumita Debbarma, Biplab Das
Summary: This study investigates the effects of fuel injection pressure and injection timing on the performance, combustion, and emissions characteristics of a diesel engine using kar-anja biodiesel with enriched hydrogen. The results show that a blend of KB20H10 at 240 bar injection pressure and 23 degrees CA bTDC injection timing achieves a 4% increase in fuel thermal efficiency compared to diesel. Additionally, the blend exhibits lower emissions of UHC, CO, and smoke opacity, but higher NOx emissions compared to diesel.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Xue Dong, Huiquan Duan, Ming Jia, Shaohua Wu, Yachao Chang
Summary: This study developed a practical soot model to describe the soot behaviors of diesel surrogate and oxygenated fuels. The fuel molecular structures were used to emphasize their influence on soot behaviors. The soot particle dynamics were described by directly solving the moment transport equations. The model successfully predicted the soot fraction and density for various fuels without parameter tuning.
Article
Thermodynamics
Harish Venu, V. Dhana Raju, S. Lingesan, Manzoore Elahi M. Soudagar
Summary: The research shows that adding 20 ppm alumina nano additive in ternary fuel blend can enhance engine performance and combustion efficiency, while reducing exhaust emissions.
Article
Energy & Fuels
Zhiqing Zhang, Jie Tian, Jiangtao Li, Junshuai Lv, Su Wang, Yunhao Zhong, Rui Dong, Sheng Gao, Chao Cao, Dongli Tan
Summary: This study investigates and compares the effects of blended fuels with different alcohol substitution ratios on the combustion, performance, and emission characteristics of a diesel engine. The results show that the D80M10B10 blended fuel is the most beneficial in improving cylinder pressure, prolonging ignition delay, and shortening combustion duration. Additionally, the addition of alcohol fuels reduces soot, HC, and CO emissions, but increases NOx emissions.
Article
Engineering, Chemical
Ronghong Lin, Austin Ladshaw, Yue Nan, Jiuxu Liu, Sotira Yiacoumi, Costas Tsouris, David W. DePaoli, Lawrence L. Tavlarides
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2015)
Article
Chemistry, Physical
Yue Nan, Jiuxu Liu, Ronghong Lin, Lawrence L. Tavlarides
JOURNAL OF SUPERCRITICAL FLUIDS
(2015)
Article
Chemistry, Physical
Jiuxu Liu, Ronghong Lin, Yue Nan, Lawrence L. Tavlarides
JOURNAL OF SUPERCRITICAL FLUIDS
(2015)
Article
Energy & Fuels
Ronghong Lin, Yiying Zhu, Lawrence L. Tavlarides
Article
Energy & Fuels
Ronghong Lin, Yiying Zhu, Lawrence L. Tavlarides
Article
Engineering, Chemical
Ronghong Lin, Jiuxu Liu, Yue Nan, David W. DePaoli, Lawrence L. Tavlarides
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2014)
Article
Mechanics
Ronghong Lin, Lawrence L. Tavlarides
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2009)
Article
Biochemical Research Methods
Ronghong Lin, Lawrence L. Tavlarides
JOURNAL OF CHROMATOGRAPHY A
(2010)
Article
Chemistry, Physical
Ronghong Lin, Lawrence L. Tavlarides
JOURNAL OF SUPERCRITICAL FLUIDS
(2010)
Article
Chemistry, Physical
Ronghong Lin, Lawrence L. Tavlarides
JOURNAL OF SUPERCRITICAL FLUIDS
(2013)
Meeting Abstract
Chemistry, Multidisciplinary
Ronghong Lin, Lawrence L. Tavlarides
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2012)
Meeting Abstract
Chemistry, Multidisciplinary
Ronghong Lin, Lawrence L. Tavlarides
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2012)
Meeting Abstract
Chemistry, Multidisciplinary
Ronghong Lin, Lawrence L. Tavlarides
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2012)
Meeting Abstract
Chemistry, Multidisciplinary
Jiuxu Liu, Tao Cong, George Anitescu, Ronghong Lin, Lawrence L. Tavlarides
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2012)
Article
Chemistry, Physical
P. Belmonte, J. M. Garcia-Vargas, J. F. Rodriguez, I. Garrido, M. T. Garcia, M. J. Ramos
Summary: In this study, four polythiourethane films with different types of polyols and isocyanates were synthesized, characterized, and foamed. The results showed that the type of isocyanate greatly influenced the crystallinity and stiffness of the polymers, while the type of polyol modified the FT-IR spectra and the decomposition curve of the material with temperature. Furthermore, the choice of isocyanate also affected the properties of the foams obtained from the polymeric material.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Xutao Zhu, Jianguo Yan, Shouchun Liu, Fengling Zhu
Summary: This study experimentally assessed the hydrodynamic characteristics of supercritical-pressure R134a in a horizontal circular tube. It was found that the hydrodynamic characteristic curve of R134a under supercritical pressure does not have a negative-slope region but a transition region. The transition region becomes more evident with increasing heat flux, while it weakens with increasing pressure and inlet temperature. Moreover, the onset of the transition region shifts in the direction of high mass flow rate with increasing heat flux.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Stefania Mottola, Iolanda De Marco
Summary: In this study, corticosteroids were micronized with cyclodextrin using Supercritical Assisted Atomization (SAA), resulting in spherical micrometric particles with improved dissolution time.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Honghai Liu, Yu Xie, Zhilan Li, Xiaokai Zhang
Summary: This study compared the effects of supercritical carbon dioxide dewatering (SCD) and conventional kiln drying (CKD) at a temperature of 55 degrees C on the dewatering rate, moisture transfer and distribution, shrinkage, and stress characteristics of bamboo strips. The results showed that SCD had a faster dewatering rate and lower shrinkage compared to CKD, but was less effective in reducing drying stress in bamboo.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Tahmasb Hatami, Ozan N. Ciftci
Summary: This study fills the gap in previous research by establishing a hierarchy of significance for factors affecting SFE profitability, providing a deeper understanding of how technical and economic factors impact profitability. The findings highlight that the SFE facility becomes profitable when the extractor capacity surpasses 42 L.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Tingshan Guo, Chuang He, Zhiyuan Liang, Qinxin Zhao
Summary: The initial oxidation behavior of Fe10Cr and Fe20Cr alloys in supercritical H2O and supercritical CO2 with O2 has been investigated. The results show that O2 has the highest adsorption energy on FeCr alloys and reacts faster than H2O and CO2.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Vikash Chandra Roy, Jin-Seok Park, Ahmed Redwan Haque, Md Sadek Ali, Hee-Jeong Lee, Byung-Soo Chun
Summary: This research aimed to valorize brewery spent grain (BSG) using subcritical water hydrolysis (SWH) modified by six different natural deep eutectic solvents (DES) and determining their bipotentialities. The findings showed that BSG hydrolysates obtained through DES-induced SWH contained high levels of sugars, proteins, flavonoids, phenolic compounds, and essential amino acids. The hydrolysates also demonstrated antimicrobial activities, and the presence of bioactive compounds was confirmed through FT-IR analysis. This comprehensive profiling of bioactive compounds from BSG using DES-mediated SWH can contribute to the efficient valorization of BSG for industrial purposes.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Kailiang Zhang, Hanyu Wang, Tong Liu, Zhu Wang, Lvxing Wang, Ping Fan, Feng Chen, Mingqiang Zhong, Bozhen Wu, Shanqiu Liu, Jintao Yang
Summary: This study investigates the influence of foam cell structure on the electromagnetic interference shielding performance of conductive polymer composite foam. The results suggest that foamed composites exhibit improved EMI shielding performance, and bimodal cell foams have higher electric conductivity but lower EMI shielding compared to uniform cell foams.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Jaromir Valtr, Petr Roztocil, David Dasek, Radek Musalek, Frantisek Lukac, Jakub Klecka, Marek Janata, Mariana Arnoult-Ruzickova, Eva Mistova, Ludek Jelinek, Petr Sajdl, Jan Macak
Summary: This paper focuses on the design of an experimental facility for in-situ electrochemical testing at supercritical water conditions, including the design of the electrode system and surface insulation coating for electrode leads.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Richard Djimasbe, Mikhail A. Varfolomeev, Nailya M. Khasanova, Ameen A. Al-Muntaser, Rustam R. Davletshin, Muneer A. Suwaid, Gazinur Z. Mingazov
Summary: This study confirms the capability of supercritical water to generate active hydrogen that interacts with different fractions in unconventional feedstocks, leading to synthetic oil production during hydrothermal reactions. The findings suggest that a maximum yield of 16.78% can be achieved at a temperature of 380 oC and a reaction time of 1-12 hours.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
