Article
Energy & Fuels
Upendra Rajak, Manoj Panchal, Prerana Nashine, Tikendra Nath Verma, Rohit Kumar, Arivalagan Pugazhendhi
Summary: The goal of this study is to find a way to run a diesel engine entirely on spirulina microalgae (SMA) and base fuel (BF) in a dual fuel mode. The effects of keeping the injection settings and compression ratio fixed on the performance and burning of the diesel engine running on SMA-BF are examined. The results show that the SMA20BF80 blend has a slightly lower efficiency and higher fuel consumption compared to BF, but it emits less NOx and smoke at high load.
Article
Energy & Fuels
Xiumei Zhang, Rui Yang, Parthiban Anburajan, Quyet Van Le, Mishal Alsehli, Changlei Xia, Kathirvel Brindhadevi
Summary: By adding nanoparticles and hydrogen to the waste cooking oil biodiesel blends in a direct ignition engine, this research achieved improvements in performance parameters. The use of fuel blends had a positive impact on increasing power, torque, and brake thermal efficiency, while reducing fuel consumption.
Article
Thermodynamics
Cavan McCaffery, Jiacheng Yang, Georgios Karavalakis, Seungju Yoon, Kent C. Johnson, J. Wayne Miller, Thomas D. Durbin
Summary: Off-road engines are a significant source of emissions in the United States. The study evaluates the feasibility and effectiveness of using aftertreatment systems on small off-road diesel engines under 75 hp. Results show that retrofitting engines with diesel particulate filters can achieve over 98% reduction in particulate matter emissions, and selective catalytic reduction systems can reduce nitrogen oxides emissions by 26-91%. Implementing more stringent standards for these engines could lead to significant emissions reductions in California's off-road equipment inventory.
Article
Environmental Sciences
Ali Zare, Svetlana Stevanovic, Mohammad Jafari, Puneet Verma, Meisam Babaie, Liping Yang, M. M. Rahman, Zoran D. Ristovski, Richard J. Brown, Timothy A. Bodisco
Summary: The study found that the use of biofuels significantly affects NOx emissions, especially during cold-start. During cold-start, NO2 and NOx emissions were higher than during hot-operation; diesel fuel had lower levels of NO2 and NOx emissions, while an increase in biofuel blend ratio led to higher emissions.
ENVIRONMENTAL POLLUTION
(2021)
Article
Energy & Fuels
P. Pavan, K. Bhaskar, S. Sekar
Summary: The experimental investigation demonstrated that a 40% reduction in NO emission was observed by introducing 10% pilot fuel and higher injection pressure at 32°bTDC compared with single injection mode at 23°bTDC. Smoke, HC, and CO emissions were found to be lower at 34°bTDC by 26.2%, 19.2%, and 21.5% respectively, with the same strategy. A slight increase in CO2 emission by 1.62% was noticed at 500 bar injection pressure at this injection timing compared to single injection mode.
Article
Green & Sustainable Science & Technology
Ibrahim Aslan Resitoglu
Summary: This study focused on the effect of biodiesel on DOC and SCR efficiency, showing that biodiesel can enhance the activity of DOC without significantly affecting the NOx conversion of SCR catalyst.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Energy & Fuels
Panpan Cai, Chunhua Zhang, Zheng Jing, Yiwen Peng, Jiale Jing, Hongjie Sun
Summary: The study found that blending F-T diesel with petrochemical diesel resulted in improved combustion and emission characteristics under different injection timings and engine loads. The trade-off between NOx and soot emissions was significantly alleviated with F-T blending fuels.
Article
Thermodynamics
Cho-Yu Lee, Jhe-Kai Lin, Wei-Cheng Wang, Rong-Hong Chen, Kun-Mo Lin, Herman Saputro, Huynh Thanh Cong, Thong Duc Hong, Manida Tongroon
Summary: The development of hydro-processed renewable diesel (HRD) was carried out in a lab-scale fixed-bed catalytic reactor. The performance and emissions of D100, H20, and B20 were evaluated using a turbocharged diesel engine. HRD showed little impact on CO and NOx emissions, reduced CO2 emissions by 7.4% compared to D100, and had lower HC emissions than D100 at high engine speeds. HRD also significantly reduced smoke emissions compared to biodiesel. The engine using H20 had better combustion stability and performance compared to D100 and B20.
Article
Energy & Fuels
Ramozon Khujamberdiev, Haengmuk Cho
Summary: The influence of biodiesel blending on engine emissions using waste swine oil was studied, focusing on particulate matter, nitrogen oxides, hydrocarbons, carbon monoxide, and carbon dioxide emissions at different engine speeds and biodiesel mixing percentages. The results showed that increasing the biodiesel content in diesel blends can reduce particulate matter emissions but may increase nitrogen oxide emissions. Engine speed significantly affects hydrocarbon and carbon monoxide emissions, with biodiesel mixes performing better at higher speeds. The study also found that increasing the biodiesel content leads to higher carbon dioxide emissions and lower brake thermal efficiency. These findings indicate both advantages and disadvantages of using waste swine oil biodiesel as a fuel source, highlighting the need for further research to optimize biodiesel consumption and reduce nitrogen oxide emissions.
Article
Mathematics, Applied
Prem Kumar, Mandeep Singh, Sarbjot Singh Sandhu
Summary: This paper investigates the dynamic characteristics of a combustion process in a diesel engine fueled with biodiesel/diesel blended fuel using wavelet transform techniques. The results show that cyclic variations in combustion parameters are sensitive to engine load and fuel properties, and adding biodiesel into diesel fuel can reduce cyclic variations in combustion parameters.
Article
Energy & Fuels
Fangyuan Zheng, Haengmuk Cho
Summary: Fossil fuels face the problem of strategic resource depletion and ecological damage. In this study, castor plant oil was transesterified to produce biodiesel, and its physicochemical properties were evaluated. Experimental research was conducted to compare the engine performance and emission characteristics of biodiesel blends at various engine speeds. The results showed that biodiesel blends had lower brake thermal efficiency, higher brake-specific fuel consumption, and increased exhaust gas temperature compared to diesel fuel. However, biodiesel enhanced combustion and reduced carbon monoxide and hydrocarbon emissions.
Article
Energy & Fuels
Visan Nicolae Adrian, Niculescu Dan Catalin, Chiriac Radu
Summary: This study investigated the performance of a four-stroke large marine diesel engine using different fuel mixtures. The results showed that a reasonable compromise can be achieved by using the diesel-ethanol15 mixture, which can reduce NOx emissions. However, using the B20-ethanol05 mixture at low speed will reduce soot emissions but increase NOx emissions. At high speed, the diesel-ethanol15 mixture performs well in reducing both soot and NOx emissions.
Review
Engineering, Environmental
Khwaja Alamgir Ahmad, Mohammad Haider Siddiqui, Kamal K. Pant, K. D. P. Nigam, Nagaraj P. Shetti, Tejraj M. Aminabhavi, Ejaz Ahmad
Summary: This article examines the suitability of butyl levulinate (BL) as a blending molecule for diesel fuel and reviews the current state of the art for BL production via bio-chemo-catalytic routes. It is found that BL is the most suitable choice for blending diesel fuel, and the mechanistic insights into the effects of feedstock structure and catalyst properties are developed.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Magin Lapuerta, Angel Ramos, Sara Rubio, Carles Estevez
Summary: In this study, an advanced glycerol-derived biofuel was blended with diesel fuel to reduce particulate matter and NOx emissions by around 50% at 50 km/h and by around 30% and 40% at 70 km/h. These reductions were achieved by optimizing engine calibration and adjusting exhaust gas recirculation and injection timings.
INTERNATIONAL JOURNAL OF ENGINE RESEARCH
(2021)
Article
Thermodynamics
Medhat Elkelawy, Safaa El-din H. Etaiw, Hagar Alm-Eldin Bastawissi, Mohamed Ayad, Ahmed Mohamed Radwan, Mohamed M. Dawood
Summary: The study found that the addition of nano additives and hydrogen peroxide can reduce exhaust emissions, improve combustion efficiency, and enhance thermal efficiency of the fuel in diesel engines.
Article
Computer Science, Interdisciplinary Applications
Insaf Mehrez, Ramla Gheith, Fethi Aloui, Sassi Ben Nasrallah
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
(2019)
Article
Energy & Fuels
V. Edwin Geo, Ankit Sonthalia, G. Nagarajan, B. Nagalingam, Fethi Aloui
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
(2019)
Article
Thermodynamics
D. Jesu Godwin, V. Edwin Geo, S. Thiyagarajan, M. Leenus Jesu Martin, T. Maiyalagan, C. G. Saravanan, Fethi Aloui
ENERGY CONVERSION AND MANAGEMENT
(2019)
Article
Chemistry, Physical
V. Edwin Geo, C. Prabhu, S. Thiyagarajan, T. Maiyalagan, Fethi Aloui
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Energy & Fuels
V. Edwin Geo, D. Jesu Godwin, S. Thiyagarajan, C. G. Saravanan, Fethi Aloui
Article
Energy & Fuels
V. EdwinGeo, Guillaume Fol, Fethi Aloui, S. Thiyagarajan, M. Jerome Stanley, Ankit Sonthalia, Kathirvel Brindhadevi, C. G. Saravanan
Summary: The study found that low viscous biofuels blended with diesel can serve as an efficient substitute fuel, improving brake thermal efficiency, reducing CO2 emissions and other pollutants, but showing higher NO emissions. Among them, wintergreen oil stands out as a biofuel with relatively high density and low viscosity, showing advantages in engine performance.
Editorial Material
Energy & Fuels
Fethi Aloui, Varuvel Edwin Geo
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Engineering, Chemical
Ahmad Al Saabi, Heni Dallagi, Fehti Aloui, Christine Faille, Gaetan Rauwel, Laurent Wauquier, Laurent Bouvier, Thierry Benezech
Summary: This study investigated the efficiency of using flowing foams to remove Bacillus spores from stainless steel surfaces in food industry cleaning operations. Under specific conditions, foams were able to achieve high removal rates at the beginning of the cleaning process, possibly due to local high wall shear stress fluctuations and capillary forces.
JOURNAL OF FOOD ENGINEERING
(2021)
Article
Energy & Fuels
V. Edwin Geo, S. Thiyagarajan, Ankit Sonthalia, T. Prakash, Sary Awad, Fethi Aloui, Arivalagan Pugazhendhi
Summary: This study investigates the reduction of CO2 emissions from a CRDI engine by using low carbon biofuels, hydrogen induction, and a zeolite-based after-treatment system. Results show that these methods can significantly reduce CO2 and smoke emissions, as well as improve engine efficiency.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2021)
Article
Mechanics
Hannes Deponte, Donia Djendar, Tim Eckert, Fethi Aloui, Wolfgang Augustin, Stephan Scholl
Summary: The study focuses on the influence of fluid dynamics on particle transport through experimental determination of three-dimensional velocity fields using stereoscopic micro particle image velocimetry (3D-mu PIV) of a suspension in a flow channel. The research quantifies the impact of process parameters (flow velocity, particle concentration, dimple geometry) on turbulence, heat transfer, and particle deposition and removal. The formation of an oscillating vortex inside the dimple is experimentally proven to explain the high heat transfer and low fouling propensity of dimpled surfaces.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2021)
Article
Engineering, Mechanical
Shima Mahmoudirad, Ebrahim Shirani, Fethi Aloui
Summary: This study investigates the vortices and fluid flow structure under different inner cylinder rotation modes by changing parameters. It is found that as the Womersley number increases, there is a time delay in flow following the boundary condition and the critical Taylor number values differ from steady-state conditions.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2021)
Proceedings Paper
Engineering, Multidisciplinary
Houda Hachem, Ramla Gheith, Fethi Aloui
Summary: This study focuses on the performance of a Stirling engine in unsteady laminar regime and its regenerator properties. It is found that finding the suitable regenerator material can reduce losses and improve the overall performance of the engine.
PROCEEDINGS OF ASME 2021 FLUIDS ENGINEERING DIVISION SUMMER MEETING (FEDSM2021), VOL 1
(2021)
Article
Energy & Fuels
V. Edwin Geo, G. Nagarajan, B. Nagalingam, Fethi Aloui, Mohand Tazerout
Article
Environmental Sciences
Hiba Rejeb, Emna Berrich, Mohamed Hachemi Chahbani, Fethi Aloui
INTERNATIONAL JOURNAL OF GLOBAL WARMING
(2020)
Proceedings Paper
Engineering, Mechanical
Fethi Aloui, Amal Elawady, Khaled J. Hammad
PROCEEDINGE OF THE ASME/JSME/KSME JOINT FLUIDS ENGINEERING CONFERENCE, 2019, VOL 1
(2019)
Article
Energy & Fuels
Shitong Fang, Houfan Du, Tao Yan, Keyu Chen, Zhiyuan Li, Xiaoqing Ma, Zhihui Lai, Shengxi Zhou
Summary: This paper proposes a new type of nonlinear VIV energy harvester (ANVEH) that compensates for the decrease in peak energy output at low wind speeds by introducing an auxiliary structure. Theoretical and experimental results show that ANVEH performs better than traditional nonlinear VIV energy harvesters under various system parameter variations.
Article
Energy & Fuels
Wei Jiang, Shuo Zhang, Teng Wang, Yufei Zhang, Aimin Sha, Jingjing Xiao, Dongdong Yuan
Summary: A standardized method was developed to evaluate the availability of solar energy resources in road areas, which combined the Analytic Hierarchy Process (AHP) and the Geographic Information System (GIS). By analyzing critical factors and using a multi-indicator evaluation method, the method accurately evaluated the utilization of solar energy resources and guided the optimal location selection for road photovoltaic (PV) projects. The results provided guidance for the application of road PV projects and site selection for route corridors worldwide, promoting the integration of transportation and energy.
Article
Energy & Fuels
Chang Liu, Jacob A. Wrubel, Elliot Padgett, Guido Bender
Summary: The study investigates the effects of coating defects on the performance of the anode porous transport layer (PTL) in water electrolyzers. The results show that an increasing fraction of uncoated regions on the PTL leads to decreased cell performance, with continuous uncoated regions having a more severe impact compared to multiple thin uncoated strips.
Article
Energy & Fuels
Marcos Tostado-Veliz, Xiaolong Jin, Rohit Bhakar, Francisco Jurado
Summary: In this paper, a coordinated charging price mechanism for clusters of parking lots is proposed. The research shows that enabling vehicle-to-grid characteristics can bring significant economic benefits for users and the cluster coordinator, and vehicle-to-grid impacts noticeably on the risk-averse character of the uncertainty-aware strategies. The developed pricing mechanism can reduce the cost for users, avoiding to directly translate the energy cost to charging points.
Article
Energy & Fuels
Duan Kang
Summary: Building an energy superpower is a key strategy for China and a long-term goal for other countries. This study proposes an evaluation system and index for measuring energy superpower, and finds that China has significantly improved its ranking over the past 21 years, surpassing other countries.
Article
Energy & Fuels
Fucheng Deng, Yifei Wang, Xiaosen Li, Gang Li, Yi Wang, Bin Huang
Summary: This study investigated the synergistic blockage mechanism of sand and hydrate in gravel filling layer and the evolution of permeability in the layer. Experimental models and modified permeability models were established to analyze the effects of sand particles and hydrate formation on permeability. The study provided valuable insights for the safe and efficient exploitation of hydrate reservoirs.
Article
Energy & Fuels
Hao Wang, Xiwen Chen, Natan Vital, Edward Duffy, Abolfazl Razi
Summary: This study proposes a HVAC energy optimization model based on deep reinforcement learning algorithm. It achieves 37% energy savings and ensures thermal comfort for open office buildings. The model has a low complexity, uses a few controllable factors, and has a short training time with good generalizability.
Article
Energy & Fuels
Moyue Cong, Yongzhuo Gao, Weidong Wang, Long He, Xiwang Mao, Yi Long, Wei Dong
Summary: This study introduces a multi-strategy ultra-wideband energy harvesting device that achieves high power output without the need for external power input. By utilizing asymmetry, stagger array, magnetic coupling, and nonlinearity strategies, the device maintains a stable output voltage and high power density output at non-resonant frequencies. Temperature and humidity monitoring are performed using Bluetooth sensors to adaptively assess the device.
Article
Energy & Fuels
Tianshu Dong, Xiudong Duan, Yuanyuan Huang, Danji Huang, Yingdong Luo, Ziyu Liu, Xiaomeng Ai, Jiakun Fang, Chaolong Song
Summary: Electrochemical water splitting is crucial for hydrogen production, and improving the hydrogen separation rate from the electrode is essential for enhancing water electrolyzer performance. However, issues such as air bubble adhesion to the electrode plate hinder the process. Therefore, a methodology to investigate the two-phase flow within the electrolyzer is in high demand. This study proposes using a microfluidic system as a simulator for the electrolyzer and optimizing the two-phase flow by manipulating the micro-structure of the flow.
Article
Energy & Fuels
Shuo Han, Yifan Yuan, Mengjiao He, Ziwen Zhao, Beibei Xu, Diyi Chen, Jakub Jurasz
Summary: Giving full play to the flexibility of hydropower and integrating more variable renewable energy is of great significance for accelerating the transformation of China's power energy system. This study proposes a novel day-ahead scheduling model that considers the flexibility limited by irregular vibration zones (VZs) and the probability of flexibility shortage in a hydropower-variable renewable energy hybrid generation system. The model is applied to a real hydropower station and effectively improves the flexibility supply capacity of hydropower, especially during heavy load demand in flood season.
Article
Energy & Fuels
Zhen Wang, Kangqi Fan, Shizhong Zhao, Shuxin Wu, Xuan Zhang, Kangjia Zhai, Zhiqi Li, Hua He
Summary: This study developed a high-performance rotary energy harvester (AI-REH) inspired by archery, which efficiently accumulates and releases ultralow-frequency vibration energy. By utilizing a magnetic coupling strategy and an accumulator spring, the AI-REH achieves significantly accelerated rotor speeds and enhanced electric outputs.
Article
Energy & Fuels
Yi Yang, Qianyi Xing, Kang Wang, Caihong Li, Jianzhou Wang, Xiaojia Huang
Summary: In this study, a novel hybrid Quantile Regression (QR) model is proposed for Probabilistic Load Forecasting (PLF). The model integrates causal dilated convolution, residual connection, and Bidirectional Long Short-Term Memory (BiLSTM) for multi-scale feature extraction. In addition, a Combined Probabilistic Load Forecasting System (CPLFS) is proposed to overcome the inherent flaws of relying on a single model. Simulation results show that the hybrid QR outperforms traditional models and CPLFS exceeds the best benchmarks in terms of prediction accuracy and stability.
Article
Energy & Fuels
Wen-Jiang Zou, Young-Bae Kim, Seunghun Jung
Summary: This paper proposes a dynamic prediction model for capacity fade in vanadium redox flow batteries (VRFBs). The model accurately predicts changes in electrolyte volume and capacity fade, enhancing the competitiveness of VRFBs in energy storage applications.
Article
Energy & Fuels
Yuechao Ma, Shengtie Wang, Guangchen Liu, Guizhen Tian, Jianwei Zhang, Ruiming Liu
Summary: This paper focuses on the balance of state of charge (SOC) among multiple battery energy storage units (MBESUs) and bus voltage balance in an islanded bipolar DC microgrid. A SOC automatic balancing strategy is proposed considering the energy flow relationship and utilizing the adaptive virtual resistance algorithm. The simulation results demonstrate the effectiveness of the proposed strategy in achieving SOC balancing and decreasing bus voltage unbalance.
Article
Energy & Fuels
Raad Z. Homod, Basil Sh. Munahi, Hayder Ibrahim Mohammed, Musatafa Abbas Abbood Albadr, Aissa Abderrahmane, Jasim M. Mahdi, Mohamed Bechir Ben Hamida, Bilal Naji Alhasnawi, A. S. Albahri, Hussein Togun, Umar F. Alqsair, Zaher Mundher Yaseen
Summary: In this study, the control problem of the multiple-boiler system (MBS) is formulated as a dynamic Markov decision process and a deep clustering reinforcement learning approach is applied to obtain the optimal control policy. The proposed strategy, based on bang-bang action, shows superior response and achieves more than 32% energy saving compared to conventional fixed parameter controllers under dynamic indoor/outdoor actual conditions.
