Article
Energy & Fuels
Muhammad Aslam Md Yusof, Yen Adams Sokama Neuyam, Mohamad Arif Ibrahim, Ismail M. Saaid, Ahmad Kamal Idris, Muhammad Azfar Mohamed
Summary: This research quantifies the impact of salt precipitation and fines migration on CO2 injectivity through core-flooding experiments. The results indicate a direct correlation between salinity and severity of injectivity alteration, with higher salinity and larger fines size leading to more significant impairment.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2022)
Article
Energy & Fuels
C. Nguyen, G. Loi, T. Russell, S. R. Mohd Shafian, N. N. Zulkifli, S. C. Chee, N. Razali, A. Zeinijahromi, P. Bedrikovetsky
Summary: In this study, a new model is developed to quantify the detachment of fine particles during the increase in water saturation and the resulting impact on oil well productivity. The model shows good agreement with laboratory measurements and production histories of three wells, indicating its effectiveness in predicting formation damage and productivity decline caused by fines migration.
Article
Energy & Fuels
C. Nguyen, G. Loi, T. Russell, S. R. Mohd Shafian, N. N. Zulkifli, S. C. Chee, N. Razali, A. Zeinijahromi, P. Bedrikovetsky
Summary: The study focuses on developing a new model to quantify the total detachment during an increase in water saturation and the consequent formation damage to production well, which shows good agreement with laboratory measurements.
Article
Green & Sustainable Science & Technology
Muhammad Aslam Md Yusof, Muhammad Azfar Mohamed, Nur Asyraf Md Akhir, Mohamad Arif Ibrahim, Mutia Kharunisa Mardhatillah
Summary: This research investigated the impact of salt precipitation and fines migration on permeability during CO2 injection into saline aquifers through core flooding experiments. The study found that brine salinity has a greater influence on permeability reduction, and the presence of both salt precipitation and fines migration can intensify the permeability reduction up to threefold. The newly developed model showed a good fit with experimental data and was statistically validated.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Energy & Fuels
Grace Loi, Cuong Nguyen, Larissa Chequer, Thomas Russell, Abbas Zeinijahromi, Pavel Bedrikovetsky
Summary: Fines migration is a common cause of decline in permeability, injectivity, and productivity in subterranean reservoirs. This study presents a new model that considers the presence of immobile fines trapped in the irreducible water phase. The combined models reveal the effect of fines migration on well impedance (skin factor growth).
Article
Chemistry, Physical
Xinru Li, Xiaohan Zhang, Yanming Zhang, Yubin Su, Yangming Hu, Hai Huang, Yang Liu, Maochang Liu
Summary: The synthesis of nanosized polystyrene microspheres with good uniformity, strong absorptivity, and controllable size has been reported. The nanofluid can effectively reduce interfacial tension and alter wettability, making it favorable for chemical enhanced oil recovery. The fluidic properties of the nanofluid were investigated through core flooding experiments and NMR tests, showing the potential for deep fluid diversion and oil displacement by regulating its behavior.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Marcos Vitor Barbosa Machado, Mojdeh Delshad, Kamy Sepehrnoori
Summary: This paper reviews the mechanisms that impact CO2 injectivity during CCS projects and evaluates their relevance through numerical models. Lab scale mechanisms such as water vaporization, salt precipitation, and mineral dissolution significantly affect reservoir properties and injectivity. Numerical models are used to quantify these impacts in synthetic and real field cases, considering multiple factors such as brine composition and mineral reaction dissolution. The results highlight the importance of managing injectivity loss and uncertainty in CCS projects.
Article
Geochemistry & Geophysics
Wang Dongmei, Shane Namie, Randall Seright
Summary: Effective oil displacement from a reservoir requires adequate and properly directed pressure gradients in areas of high oil saturation. This study examines how the pressure-barrier concept limits the size and viscosity of the polymer bank during a polymer flood. Analytical and numerical methods are used to address this issue. The relevance of the pressure modification concept for different conditions and factors is analyzed, and the relation between the pressure-barrier concept and fractures during polymer injection is examined.
Article
Mechanics
Arsalan Nikdoost, Pouya Rezai
Summary: This study investigates the effects of curvilinear microchannel parameters and shear-thickening nanofluids on the secondary flow in microchannels. It reveals that the average Dean velocity (V-De) of shear-thickening SiO2-water nanofluids is directly proportional to the channel width and fluid axial velocity, while inversely proportional to the SiO2 concentration and channel radius of curvature. An empirical correlation is developed to accurately estimate V-De of shear-thickening fluids, which is useful for the design of particle and cell sorting microdevices.
Article
Engineering, Civil
L. Chequer, C. Nguyen, G. Loi, A. Zeinijahromi, P. Bedrikovetsky
Summary: The study focuses on predicting long-term well productivity changes based on production history and fines concentration. The analytical model derived provides detailed analysis of flow domain structure and an implicit formula for well impedance. Validation through field cases and common variation intervals for model parameters confirm the effectiveness of the proposed model.
JOURNAL OF HYDROLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Sara H. Al-Araimi, Abdulkadir Elshafie, Saif N. Al-Bahry, Yahya M. Al-Wahaibi, Ali S. Al-Bemani
Summary: The world economy heavily relies on crude oil, and the use of pullulan as a polymer technology shows promising results in enhancing oil recovery. The newly isolated species A. mangrovei SARA-138H has the potential to increase oil recovery, providing comparable results to other polymers used in oil fields worldwide.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Energy & Fuels
Ivan Carrillo-Berdugo, Javier Sampalo-Guzman, Alejandro Dominguez-Nunez, T. Aguilar, Paloma Martinez-Merino, Javier Navas
Summary: Concentrating solar power technology has the potential to reduce carbon dioxide emissions by mitigating the intermittency of wind and photovoltaic power. Nanofluids have been proposed as heat transfer fluids and volumetric absorbers to improve the efficiency of this technology. This study assesses the expected efficiencies of Pd and Au nanoplate-containing nanofluids in collectors and provides design requirements for achieving maximum working temperatures.
Article
Energy & Fuels
Andrey Viktorovich Minakov, Dmitriy Viktorovich Guzei, Maxim Ivanovich Pryazhnikov, Sergey Anatol'yevich Filimonov, Yulia Olegovna Voronenkova
Summary: The oil recovery factor (ORF) increases with the increase of mass fraction of nanoparticles; increasing the nanoparticle concentration to 0.5% allows an increase in ORF by about 19% compared to water flooding; ORF increases with the decrease of nanoparticle size and declines with the increase of displacing rate.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2021)
Article
Chemistry, Physical
Lei Liang, Yanling Wang, Bin Liu, Jincheng Gong, Wenjing Shi, Shinan Liang
Summary: This article introduces a nanomaterial that can change the wettability of reservoirs. By preparing fluorinated monomers and nano-silica into core-shell structured polymer nanofluids, the adhesion resistance of liquid phase in water-wetting and oil-wetting reservoirs can be reduced, leading to improved energy utilization efficiency.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Petroleum
Madhar Sahib Azad
Summary: Research finds that enhanced oil recovery (EOR) polymer systems, such as hydrolyzed polyacrylamide (HPAM) solutions, exhibit shear-thickening in porous media under high flux conditions. To characterize the viscous and viscoelastic behaviors of polymer solutions in porous media, both oscillatory shear rheology based on linear viscoelastic data and extensional rheology based on nonlinear viscoelastic data have been used. However, this study shows that researchers should also consider using nonlinear steady-shear rheology, as the shear-thickening behavior in high-saline HPAM solutions correlates with their mechanical degradation.
Article
Thermodynamics
Xue Zhang, Yuliang Su, Lei Li, Qi'an Da, Yongmao Hao, Wendong Wang, Jiahui Liu, Xiaogang Gao, An Zhao, Kaiyu Wang
Summary: Injecting CO2 into deep reservoirs with high temperature and pressure has the potential to enhance oil recovery and CO2 utilization and storage. This study conducted water/gas flooding experiments in a microfluidic system to investigate the mechanisms of micro-remaining oil and formation damage. The results showed that scCO2 extraction and carbonated water swelling recovered a significant amount of remaining oil. Additionally, water injection into heterogeneous reservoirs resulted in unstable displacement fronts in high-permeability zones. The subsequent injection of scCO2 led to asphaltene deposition and reduced reservoir permeability.
Article
Energy & Fuels
Guanqun Li, Yuliang Su, Wendong Wang, Qinghao Sun
Summary: This study investigates the mechanism of forced imbibition in energized hydraulic fracturing technology and establishes mathematical models. The research finds that forced imbibition is faster than spontaneous imbibition and leads to higher oil recovery, with smaller pores playing a significant role in the imbibition rate.
Article
Energy & Fuels
Zongfa Li, Yuliang Su, Lei Li, Yongmao Hao, Wendong Wang, Yang Meng, An Zhao
Summary: This study explored the potential of water alternating gas (WAG) flooding in CO2 storage through experimental and numerical simulation methods. It was found that WAG flooding after water flooding enhanced oil recovery, but also displaced some of the previously stored CO2. The study identified key factors influencing CO2 storage and achieved higher CO2 storage through optimization.
Article
Water Resources
Han Wang, Yuliang Su, Wendong Wang
Summary: Understanding the mechanisms of nanoconfined liquid flow in nanoporous media is crucial for various applications. This study summarizes and establishes four theoretical models for liquid flow in nanopores and indicates that the apparent viscosity model is the most suitable for coupling lattice Boltzmann method (LBM). A local-apparent-viscosity LBM (LAV-LBM) is proposed to simulate liquid flow in nanoporous media, considering slip boundary and heterogeneous viscosity/density effects. The effects of molecular interactions, porous media geometry, and wall wettability on apparent permeability are discussed using LAV-LBM simulations.
ADVANCES IN WATER RESOURCES
(2022)
Article
Energy & Fuels
Lipeng Zhang, Tianxiang Wang, Ibrahim Albouzedy, Wendong Wang, Xiang Ren
Summary: This paper analyzes the effects of inter-well interference on productivity by studying field data, using three infill horizontal wells in the Sulige East II area gas field as examples. It provides guidance for optimizing fracturing design.
NATURAL GAS INDUSTRY B
(2022)
Article
Mathematics, Interdisciplinary Applications
Guanqun LI, Yuliang Su, Wendong Wang
Summary: Large-scale hydraulic fracturing is crucial for efficient shale oil production, but the mechanisms of fracturing fluid flow in shale micropores and the impact of shale microstructure and physical properties are not well understood. This lack of understanding hinders the optimization of fracturing flowback and limits shale oil recovery enhancement. This study analyzes the characteristics of shale pores using SEM and XRD experiments, finding multiple pore types including organic pores, brittle mineral pores, and clay pores. The study investigates the influence of cross-section shapes on capillary force and analyzes the dynamics of imbibition in different pore types. A shale semi-analytical solution that considers imbibition time, fluid properties, pore cross-section shapes, tortuosity, and forced pressure is established using a shale multi-pores physical model and fractal theory.
FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY
(2023)
Article
Energy & Fuels
Yuxuan Deng, Wendong Wang, Yuliang Su, Shibo Sun, Xinyu Zhuang
Summary: In this study, a double sweet spot analysis system and an optimization method for sweet spot parameters were proposed. Unsupervised machine learning algorithms were used to determine the classification standard of general reservoirs and high-quality sweet spot reservoirs. The results show that this method can accurately locate the sweet spot in gas fields.
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
(2023)
Article
Energy & Fuels
Zongfa Li, Yuliang Su, Fuxiao Shen, Lijuan Huang, Shaoran Ren, Yongmao Hao, Wendong Wang, Yang Meng, Yang Fan
Summary: The feasibility of N2 alternating CO2 injection for improving CO2 storage and oil production was investigated through laboratory experiments and numerical simulation. The results showed that the N2 alternating CO2 flooding had 2.1% lower CO2 storage factor and 7.1% lower enhanced oil recovery compared to continuous CO2 injection. However, the larger the N2 slug volume, the lower the EOR and CO2 storage factor, due to the reduction of CO2 concentration in the gas phase and CO2 solubility in oil and water. Nevertheless, the N2 slugs significantly reduced mobility differences between flowing zones, resulting in a 1.78 times larger gas swept area and a 44% higher cumulative oil production compared to continuous CO2 injection. Moreover, the optimized N2 alternating CO2 injection scheme achieved 19.6% more CO2 storage than continuous CO2 flooding at a field scale. This study provides valuable experimental and theoretical support for improving CO2 storage and oil production in an oil reservoir.
Article
Energy & Fuels
Wendong Wang, Chengwei Wang, Yuliang Su, Yang Zhao, Jiayi Wen, Lei Li, Yongmao Hao
Summary: CO2 storage is an important technique for achieving carbon peak and carbon neutralization, and depleted gas reservoirs are potential candidates for geological CO2 storage. High water-bearing wells in volcanic depleted gas reservoirs can be selected for CO2 storage. The gas-water distribution characteristics of the gas reservoir after CO2 injection are evaluated and the CO2 injection timing and volume are optimized. Typical wells have been selected for CO2 storage based on the research results.
Article
Energy & Fuels
Wendong Wang, Xincheng Guo, Penghui Duan, Bo Kang, Da Zheng, Atif Zafar
Summary: This study simulated the plugging process by microspheres and nanospheres and evaluated their plugging performance on the core matrix. The best combination of injection parameters was optimized and the results showed that nanospheres had a higher plugging rate compared to microspheres. The maximum oil recovery after plugging was achieved with an injection ratio of 2:1 between nanospheres and microspheres, a total injection of 0.6 pore volume, an injection rate of 1.5 mL/min, and an aging time of 6 days.
NATURAL GAS INDUSTRY B
(2023)
Article
Energy & Fuels
Wendong Wang, Jiayi Wen, Chengwei Wang, Sina Rezaei Gomari, Xinyue Xu, Shuang Zheng, Yuliang Su, Lei Li, Yongmao Hao, Dongxia Li
Summary: CO2 storage with enhanced gas recovery (CSEGR) technology is a pivotal solution for mitigating the greenhouse effect and complying with energy conservation and emission reduction policies. This paper thoroughly analyzes the mechanisms and potential of CO2 storage in gas reservoirs, as well as the factors affecting CSEGR. It also examines the current challenges and future trends in CSEGR development.
Article
Chemistry, Multidisciplinary
Han Wang, Jianchao Cai, Yuliang Su, Zhehui Jin, Mingshan Zhang, Wendong Wang, Guanqun Li
Summary: In this study, an improved multicomponent and multiphase lattice Boltzmann method is proposed to investigate the effects of water phase on CO2 huff-n-puff in shale nanoporous media. The competitive adsorption behaviors between oil and CO2 and the miscibility of oil-CO2 are considered. Additionally, the effects of oil-CO2 miscibility on oil-water flow behaviors and relative permeability are discussed. The results show that water phase has a significant impact on oil recovery and CO2 storage, and the oil-CO2 miscibility affects the oil-water relative permeability in calcite nanoporous media.
Editorial Material
Engineering, Chemical
Wei Yu, Zhiming Chen, Bin Wang, Wendong Wang, Kamy Sepehrnoori
TRANSPORT IN POROUS MEDIA
(2023)
Article
Energy & Fuels
Qiuheng Xie, Wendong Wang, Yuliang Su, Han Wang, Zhouyuan Zhang, Wubin Yan
Summary: In this study, a pore-scale numerical simulation based on the lattice Boltzmann method is used to investigate the calcite dissolution process. The impact of pressure difference and temperature on the dissolution dynamics and dissolution patterns are analyzed. The results show that pressure difference has a decreasing effect on calcite dissolution with increasing temperature, and high temperature and high injection rate are favorable for mineral trapping.
GAS SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Zhong-Zheng Wang, Kai Zhang, Guo-Dong Chen, Jin-Ding Zhang, Wen-Dong Wang, Hao-Chen Wang, Li -Ming Zhang, Xia Yan, Jun Yao
Summary: Production optimization is crucial in the smart oilfield community for maximizing economic benefits and oil recovery. This study proposes an efficient and robust method, evolutionary-assisted reinforcement learning (EARL), to achieve real-time production optimization under uncertainty. The approach models the optimization problem as a Markov decision process and uses a deep convolutional neural network to adaptively adjust well controls based on reservoir states. Simulation results demonstrate that EARL outperforms prior methods in terms of optimization efficiency, robustness, and real-time decision-making capability.
Article
Energy & Fuels
Yingna Du, Chen Huang, Wei Jiang, Qiangwei Yan, Yongfei Li, Gang Chen
Summary: In this study, anionic surfactants modified hydrotalcite was used as a flow improver for crude oil under low-temperature conditions. The modified hydrotalcite showed a significant viscosity reduction effect on crude oil. The mechanism of the modified hydrotalcite on viscosity and pour point of crude oil was explored through characterization and analysis of the modified hydrotalcite and oil samples.
Article
Energy & Fuels
Mohammad Saeid Rostami, Mohammad Mehdi Khodaei
Summary: In this study, a hybrid structure, MIL-53(Al)@MWCNT, was synthesized by combining MIL-53(Al) particles and -COOH functionalized multi-walled carbon nanotube (MWCNT). The hybrid structure was then embedded in a polyethersulfone (PES) polymer matrix to prepare a mixed matrix membrane (MMM) for CO2/CH4 and CO2/N2 separation. The addition of MWCNTs prevented MIL-53(Al) aggregation, improved membrane mechanical properties, and enhanced gas separation efficiency.
Article
Energy & Fuels
Yunlong Li, Desheng Huang, Xiaomeng Dong, Daoyong Yang
Summary: This study develops theoretical and experimental techniques to determine the phase behavior and physical properties of DME/flue gas/water/heavy oil systems. Eight constant composition expansion (CCE) tests are conducted to obtain new experimental data. A thermodynamic model is used to accurately predict saturation pressure and swelling factors, as well as the phase boundaries of N2/heavy oil systems and DME/CO2/heavy oil systems, with high accuracy.
Article
Energy & Fuels
Morteza Afkhamipour, Ebad Seifi, Arash Esmaeili, Mohammad Shamsi, Tohid N. Borhani
Summary: Non-conventional amines are being researched worldwide to overcome the limitations of traditional amines like MEA and MDEA. Adequate process and thermodynamic models are crucial for understanding the applicability and performance of these amines in CO2 absorption, but studies on process modeling for these amines are limited. This study used rate-based modeling and Deshmukh-Mather method to model CO2 absorption by DETA solution in a packed column, validated the model with experimental data, and conducted a sensitivity analysis of mass transfer correlations. The study also compared the CO2 absorption efficiency of DETA solution with an ionic solvent [bmim]-[PF6] and highlighted the importance of finding optimum operational parameters for maximum absorption efficiency.
Article
Energy & Fuels
Arastoo Abdi, Mohamad Awarke, M. Reza Malayeri, Masoud Riazi
Summary: The utilization of smart water in EOR operations has gained attention, but more research is needed to understand the complex mechanisms involved. This study investigated the interfacial tension between smart water and crude oil, considering factors such as salt, pH, asphaltene type, and aged smart water. The results revealed that the hydration of ions in smart water plays a key role in its efficacy, with acidic and basic asphaltene acting as intrinsic surfactants. The pH also influenced the interfacial tension, and the aged smart water's interaction with crude oil depended on asphaltene type, salt, and salinity.
Article
Energy & Fuels
Dongao Zhu, Kun Zhu, Lixian Xu, Haiyan Huang, Jing He, Wenshuai Zhu, Huaming Li, Wei Jiang
Summary: In this study, cobalt-based metal-organic frameworks (Co-based MOFs) were used as supports and co-catalysts to confine the NHPI catalyst, solving the leaching issue. The NHPI@Co-MOF with carboxyl groups exhibited stronger acidity and facilitated the generation of active oxygen radicals O2•, resulting in enhanced catalytic activity. This research provides valuable insights into the selection of suitable organic linkers and broadens the research horizon of MOF hybrids in efficient oxidative desulfurization (ODS) applications.
Article
Energy & Fuels
Edwin G. Hoyos, Gloria Amo-Duodu, U. Gulsum Kiral, Laura Vargas-Estrada, Raquel Lebrero, Rail Munoz
Summary: This study investigated the impact of carbon-coated zero-valent nanoparticle concentration on photosynthetic biogas upgrading. The addition of nanoparticles significantly increased microalgae productivity and enhanced nitrogen and phosphorus assimilation. The presence of nanoparticles also improved the quality of biomethane produced.
Article
Energy & Fuels
Yao Xiao, Asma Leghari, Linfeng Liu, Fangchao Yu, Ming Gao, Lu Ding, Yu Yang, Xueli Chen, Xiaoyu Yan, Fuchen Wang
Summary: Iron is added as a flocculant in wastewater treatment and the hydrothermal carbonization (HTC) of sludge produces wastewater containing Fe. This study investigates the effect of aqueous phase (AP) recycling on hydrochar properties, iron evolution and environmental assessment during HTC of sludge. The results show that AP recycling process improves the dewatering performance of hydrochar and facilitates the recovery of Fe from the liquid phase.
Article
Energy & Fuels
He Liang, Tao Wang, Zhenmin Luo, Jianliang Yu, Weizhai Yi, Fangming Cheng, Jingyu Zhao, Xingqing Yan, Jun Deng, Jihao Shi
Summary: This study investigated the influence of inhibitors (carbon dioxide, nitrogen, and heptafluoropropane) on the lower flammability limit of hydrogen and determined the critical inhibitory concentration needed for complete suppression. The impact of inhibitors on explosive characteristics was evaluated, and the inhibitory mechanism was analyzed with chemical kinetics. The results showed that with the increase of inhibitor quantity, the lower flammability limit of hydrogen also increased. The research findings can contribute to the safe utilization of hydrogen energy.
Article
Energy & Fuels
Zonghui Liu, Zhongze Zhang, Yali Zhou, Ziling Wang, Mingyang Du, Zhe Wen, Bing Yan, Qingxiang Ma, Na Liu, Bing Xue
Summary: In this study, high-performance solid catalysts based on phosphotungstic acid (HPW) supported on Zr-SBA-15 were synthesized and evaluated for the one-pot conversion of furfural (FUR) to γ-valerolactone (GVL). The catalysts were characterized using various techniques, and the ratio of HPW and Zr was found to significantly affect the selectivity of GVL. The HPW/Zr-SBA-15 (2-4-15) catalyst exhibited the highest GVL yield (83%) under optimized reaction conditions, and it was determined that a balance between Bronsted acid sites (BAS) and Lewis acid sites (LAS) was crucial for achieving higher catalytic performance. The reaction parameters and catalyst stability were also investigated.
Article
Energy & Fuels
Michael Stoehr, Stephan Ruoff, Bastian Rauch, Wolfgang Meier, Patrick Le Clercq
Summary: As part of the global energy transition, an experimental study was conducted to understand the effects of different fuel properties on droplet vaporization for various conventional and alternative fuels. The study utilized a flow channel to measure the evolution of droplet diameters over time and distance. The results revealed the temperature-dependent effects of physical properties, such as boiling point, liquid density, and enthalpy of vaporization, and showed the complex interactions of preferential vaporization and temperature-dependent influences of physical properties for multi-component fuels.
Article
Energy & Fuels
Yuan Zhuang, Ruikang Wu, Xinyan Wang, Rui Zhai, Changyong Gao
Summary: Through experimental validation and optimization of the chemical kinetic model, it was found that methanol can accelerate the oxidation reaction of ammonia, and methanol can be rapidly oxidized at high concentration. HO2 was found to generate a significant amount of OH radicals, facilitating the oxidation of methanol and ammonia. Rating: 7.5/10.
Article
Energy & Fuels
Radwan M. EL-Zohairy, Ahmed S. Attia, A. S. Huzayyin, Ahmed I. EL-Seesy
Summary: This paper presents a lab-scale experimental study on the impact of diethyl ether (DEE) as an additive to waste cooking oil biodiesel with Jet A-1 on combustion and emission features of a swirl-stabilized premixed flame. The addition of DEE to biodiesel significantly affects the flame temperature distribution and emissions. The W20D20 blend of DEE, biodiesel, and Jet A-1 shows similar flame temperature distribution to Jet A-1 and significantly reduces UHC, CO, and NOx emissions compared to Jet A-1.
Article
Energy & Fuels
Jiang Bian, Ziyuan Zhao, Yang Liu, Ran Cheng, Xuerui Zang, Xuewen Cao
Summary: This study presents a novel method for ammonia separation using supersonic flow and develops a mathematical model to investigate the condensation phenomenon. The results demonstrate that the L-P nucleation model accurately characterizes the nucleation process of ammonia at low temperatures. Numerical simulations also show that increasing pressure and concentration can enhance ammonia condensation efficiency.
Article
Energy & Fuels
Shiyuan Pan, Xiaodan Shi, Beibei Dong, Jan Skvaril, Haoran Zhang, Yongtu Liang, Hailong Li
Summary: Integrating CO2 capture with biomass-fired combined heat and power (bio-CHP) plants is a promising method for achieving negative emissions. This study develops a reliable data-driven model based on the Transformer architecture to predict the flowrate and CO2 concentration of flue gas in real time. The model validation shows high prediction accuracy, and the potential impact of meteorological parameters on model accuracy is assessed. The results demonstrate that the Transformer model outperforms other models and using near-infrared spectral data as input features improves the prediction accuracy.
