Article
Energy & Fuels
G. N. Rameshaiah, Rajesh Kumar Kodi, B. Jyothi, V Deepika, K. T. Prasanna
Summary: This study investigates the purification of biodiesel by dry washing method. The results show that activated bentonite clay with sulfuric acid is efficient in removing soap residue and free fatty acids, thus achieving effective purification of biodiesel.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Engineering, Environmental
Laure Wetterwald, Antoine Leybros, Gatien Fleury, Florian Delrue, Alexandra Dimitriades-Lemaire, Paul Chambonniere, Audrey Hertz
Summary: This study investigates the effects of water content, operating pressure and temperature on supercritical CO2 extraction of lipids from Chlorella vulgaris microalgae. The highest extraction yield was obtained with freeze-dried microalgae at 40℃ and 200 bar. However, extracts obtained at 40℃ and 250 bar had the highest fatty acid content, while those obtained at 60℃ and 250 bar had the highest cetane number and oxidative stability. Water in the initial biomass had a negative impact on total extraction yield, but promoted the extraction of fatty acids, particularly monounsaturated ones.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Manesh Prakash Joshi, Anupam A. Sawant, Sudha Rajamani
Summary: The study reveals the impact of phospholipids on peptide synthesis in a non-activated amino acid system under wet-dry cycles, demonstrating the simultaneous formation of peptides and N-acyl amino acids through ester-amide exchange. Furthermore, the ability of NAAs to self-assemble into vesicles at acidic pH suggests their potential for forming protocellular membranes under acidic geothermal conditions.
Article
Green & Sustainable Science & Technology
Bowen Qi, Ying Chen, Dong Chen, Yong Chen, Luwei Ma, Xiubo Tian, Yanju Li, Yunqian Long
Summary: In this study, it was found that the oil-contaminated soil with higher water content (OCS-II) is easier to wash compared to the drier oil-contaminated soil (OCS-I). This is because the polarity bottom layer in OCS-II can be easily separated from the soil during washing, leading to higher removal rates of polarity component in crude oil.
CLEAN-SOIL AIR WATER
(2021)
Article
Geochemistry & Geophysics
Shinan Lang, Mingzhu Yang, Xiangbin Cui, Lin Li, Yiheng Cai, Xiaojun Liu, Jingxue Guo, Bo Sun, Martin Siegert
Summary: In this study, a semiautomatic method is proposed to predict basal dry-wet distributions in glaciated regions, which improves accuracy by correcting identification thresholds and automatically identifying dry-wet transitions.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Biotechnology & Applied Microbiology
Palaniappan Ramasamy, Ramachandran Krishnakumar, Ravichandran Rekha, Baskaralingam Vaseeharan, K. Saraswathi, Mohan Raj, Robert E. B. Hanna, Gerard P. Brennan, Govindan Dayanithi, Sekar Vijayakumar
Summary: The unique wet and dry wound dressings derived from unprocessed human amniotic membrane (UP-HAM) were prepared with specific processes to ensure durability and stability. The processed human amniotic membrane products demonstrated effectiveness in wound healing and antibacterial properties, making them valuable for medical applications.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Construction & Building Technology
Chunhong Chen, Lei Wang, Ronggui Liu, Pinghua Zhu, Hui Liu, Xinjie Wang, Jiang Yu, Yunchun Chen
Summary: This study investigates the effect of dry-wet ratios and temperature on the chloride corrosion resistance of concrete. Results show that a higher dry-wet ratio intensifies the deterioration of concrete performance. Compared to a dry-wet ratio of 1:3, a dry-wet ratio of 3:1 leads to decreased strength and increased chloride content and erosion depth. Additionally, variable temperature cycles accelerate the decay of mechanical strength and chloride erosion resistance in concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Chemical
Tianshu Ning, Yang Hu, Renjie Ren, Zhengyuan Yi, Gongwei Wang, Li Xiao, Juntao Lu, Lin Zhuang
Summary: The new APE xQAPTF, which has high stability and high ionic conductivity, effectively solves the stability problem of APEFC.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
Yuanpeng Cao, Qiang Sun, Xiuyuan Yang, Chen Dang, Jishi Geng
Summary: Rocks often cycle between dry and wet states due to precipitation and groundwater level changes, which can cause weathering especially in the presence of salt. This study focused on the effects of salt during wet-dry cycling on sandstone, a widely used building material. The research found that higher concentrations of NaCl led to more serious rock weathering, with salt crystallization increasing pore size and indirectly accelerating the weathering rate.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2022)
Article
Engineering, Environmental
Yunus Aksoy, Halil Hasar
Summary: The study demonstrated the usability of gas-permeable hollow fiber membranes produced with additives in a membrane biofilm reactor. These membranes showed increased oxygen gas diffusion coefficients, leading to improved nitrate reduction and ammonium oxidation. This cost-effective approach could help promote membrane biofilm technology.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Review
Engineering, Chemical
Aparna Gautam, Pundlik R. Bhagat, Sushil Kumar, Dipesh S. Patle
Summary: Both dry and wet routes for biodiesel production from microalgae yield biodiesel of similar quality, but differ significantly in terms of energy consumption, equipment size, and production cost. Significant amount of energy is required for biodiesel production, resulting in high costs.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Article
Chemistry, Inorganic & Nuclear
Emily P. Greenstein, Kenneth R. Poeppelmeier, Laurence D. Marks
Summary: The choice of temperature and gas conditions in a water pressure-controlled reactor is guided by DFT to synthesize nearly phase-pure lanthanide scandate nanoparticles. Low water-vapor partial pressures inhibit particle growth, while excess water vapor leads to undesired rare-earth hydroxide and oxyhydroxide secondary phases. The optimal humidity for high-purity LnScO3 particle synthesis varies with the lanthanide, and DFT is used to calculate the thermodynamics of secondary phase formation to maintain phase purity (>96 mol %) across the series. The combination of thermodynamic calculation and experimental confirmation enables exploration of analogous syntheses of other inorganic perovskite nanoparticles.
INORGANIC CHEMISTRY
(2023)
Article
Biodiversity Conservation
Felicity L. Newell, Ian J. Ausprey, Scott K. Robinson
Summary: Warming temperatures are increasing rainfall extremes, which in turn affects the biomass of arthropods. This study found that rainfall is the primary driver of arthropod biomass, with both high and low rainfall reducing arthropods by half. Additionally, the study predicts shifts in biomass timing within cloud forests due to changes in rainfall patterns. The study also highlights the susceptibility of arthropods to desiccation and the potential destabilization of insectivore food webs.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Environmental Sciences
Maria de Jesus Delmiro Rocha, Iran Eduardo Lima Neto
Summary: Research on 18 strategic reservoirs in the high-density reservoir network of the Brazilian semiarid area found that seasonal variations in total phosphorus concentrations were not significant, attributed to a balance between hydrological processes. Wet season loads typically reflected external TP loads, while dry season loads were dominated by internal TP loads.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Tim H. M. van Emmerik, Louise J. Schreyers, Yvette A. M. Mellink, Ty Sok, Mauricio E. Arias
Summary: Plastic pollution in rivers is a global concern due to its impact on ocean pollution and long-term plastic retention. Reliable observations are crucial for designing effective strategies to reduce plastic pollution. Various measurement methods have been developed, but harmonization is necessary to ensure consistent data collection. In this study, a harmonization approach was applied to estimate plastic transport in the Mekong-Tonle Sap-Bassac river system. Results showed significant variations in plastic transport between wet and dry seasons, with the city of Phnom Penh playing a major role as an entry point for plastic pollution into the Mekong. Uncertainties in data collection methods need to be addressed for more accurate assessments. This study contributes to the harmonization of river plastic monitoring.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Fathimath Afrah Solih, Archina Buthiyappan, Abdul Aziz Abdul Raman, Yan Ying Tan
Summary: Agricultural wastes, including crop residue, livestock waste, agro-industrial waste, and aquaculture waste, contribute significantly to the accumulation of municipal solid waste globally. In this study, banana peel and avocado seed, two types of agro-industrial waste, were used to develop adsorbents with high carbon content and excellent chemical properties. These adsorbents showed promising adsorption performance for removing mixed dyes from aqueous solutions. The study also investigated the effect of operational parameters and found the optimized conditions for efficient adsorption. The findings suggest that the agricultural waste-based adsorbent synthesized from banana peel and avocado seed has the potential to replace conventional adsorbents from a sustainability perspective.
Article
Chemistry, Physical
Luqman H. Hashim, Ahmed Halilu, Yahaya Balarabe Umar, Mohd Rafie Bin Johan, Mohamed Kheireddine Aroua, Paramita Koley, Suresh K. Bhargava
Summary: This study focuses on the design and synthesis of highly active bifunctional catalysts for the conversion of furfural to furfuryl acetate. The catalysts with lower lattice strain exhibited higher catalytic activity.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
A. Arifutzzaman, Intan Najihah Musa, Mohamed Kheireddine Aroua, R. Saidur
Summary: In recent decades, capturing carbon has become a priority in addressing climate change. This paper explores the use of MXenes and activated carbon as CO2 adsorbents, evaluating their performance through various tests and analysis. The AC/MXene sandwich adsorbent showed the highest CO2 adsorption capacity with a significant improvement over AC. The results highlight the potential of emerging nanomaterials in large-scale CO2 capture applications.
JOURNAL OF CO2 UTILIZATION
(2023)
Review
Chemistry, Physical
Nadeem Hussain Solangi, Farihahusnah Hussin, Amna Anjum, Nizamuddin Sabzoi, Shaukat Ali Mazari, Nabisab Mujawar Mubarak, Mohamed Kheireddine Aroua, M. T. H. Siddiqui, Sundus Saeed Qureshi
Summary: Ionic liquids (ILs) are well-known for their CO2 capture properties. The combination of ILs with various materials reduces the problem of high viscosity of ILs. Encapsulated ionic liquid (ENIL) systems can overcome the low CO2 absorption rate and difficulties in solvent regeneration. This review comprehensively evaluates recent literature on ENILs for CO2 capture, including preparation, characterization, reaction kinetics, solubility, selectivity, and regeneration studies.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Chemical
Nur Syahirah Mohamed Hatta, Farihahusnah Hussin, Lai Ti Gew, Mohamed Kheireddine Aroua
Summary: This study investigates the use of egg white as a surface modifier to enhance the adsorption capacity of palm shell activated carbon for CO2 capture. The adsorbent exhibits significant increase in CO2 uptake with the addition of 10 wt.% egg white. The introduction of amide functional group of egg white on the surfaces of activated carbon contributes to the enhanced CO2 adsorption capacity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Mohd Azlan Kassim, Nor Afifah Sulaiman, Rozita Yusoff, Mohamed Kheireddine Aroua
Summary: Carbon dioxide (CO2) absorption in a non-aqueous solution was investigated using a deep eutectic solvent (DES) of choline hydroxide and polyamines, combined with non-aqueous solvents such as sulfolane and dimethylsulfoxide (DMSO). The study found that the 2M ChOH:TETA-DMSO solution had the highest CO2 loading capacity among the tested solutions. The absorption capacity increased with pressure and decreased with temperature, indicating the potential of using a DES polyamine mixed with a non-aqueous solvent for CO2 capture.
Article
Green & Sustainable Science & Technology
Farihahusnah Hussin, Nur Nadira Hazani, Mohamed Kheireddine Aroua
Summary: The aim of this study was to prepare a carbon pellet with excellent surface properties for CO2 capture using low-cost material and a green process. A chemical activation method was introduced by modifying the pellet with potassium acetate to enhance its surface properties. The modified carbon pellet showed remarkable changes in surface morphology and increased CO2 adsorption capacity due to the presence of oxygen-containing functional groups. The results suggest that the carbon pellet modified with potassium acetate is suitable for CO2 adsorption.
Review
Chemistry, Multidisciplinary
Farihahusnah Hussin, Siti Aqilah Nadhirah Md Rahim, Mohamed Kheireddine Aroua, Shaukat Ali Mazari
Summary: Climate change and global warming are crucial environmental issues that require global action. Carbon capture technology and machine learning play important roles in reducing CO2 emissions and addressing climate change. Research and development in this field are crucial for future advancements and combating the challenges of climate change.
JOURNAL OF CO2 UTILIZATION
(2023)
Review
Chemistry, Applied
Farihahusnah Hussin, Nur Nadira Hazani, Munawar Khalil, Mohamed Kheireddine Aroua
Summary: This article provides a systematic review of hydrothermal technology and the life cycle assessment of hydrothermal biomass conversion. The study found that there is limited research on the environmental and economic impacts of hydrothermal biomass conversion, highlighting the need for environmental impact studies to demonstrate the benefits of biomass hydrothermal processing.
FUEL PROCESSING TECHNOLOGY
(2023)
Review
Engineering, Chemical
Kay Yi Chook, Mohamed Kheireddine Aroua, Lai Ti Gew
Summary: In this study, the advancements and breakthroughs in emerging biocatalysis reactor technologies over the past decade were documented. The focus was on the production of glycerides using enzyme biocatalysis. Reaction parameters and optimization strategies, such as temperature and residence time, were reviewed and discussed. The selection of reactor type and agitator was found to be crucial for enzyme activity. The conversion of enzymes from waste streams into functional products could enhance the sustainability of biocatalysis. This work serves as a stepping stone for the biocatalysis industry, providing a reference for those interested in exploring this field.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Engineering, Chemical
Wei Pu, Abdul Aziz Abdul Raman, Mahar Diana Hamid, Xiaoming Gao, Archina Buthiyappan
Summary: This review provides a comprehensive analysis of proactive risk reduction strategies (RRSs) and techniques for evaluating the performance of inherent safety, health, and environmental aspects. Background information is presented on the development and implementation of inherently safer process design and approaches for achieving inherently healthier and environmentally friendlier processes. The characteristics of inherency assessment tools (IATs) based on available information at different process stages are examined, and evaluation methods and historical development of IATs are investigated. The study concludes that there is a need for further research on no-chemical hazards-based IATs to improve the safety level of process plants.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2023)
Article
Engineering, Chemical
Xiaoming Gao, Abdul Aziz Abdul Raman, Hanee F. Hizaddin, Archina Buthiyappan, Mustapha M. Bello
Summary: Over the years, there have been numerous serious laboratory accidents, leading to injuries, deaths, and economic losses, which has prompted increased attention to laboratory safety. However, current safety measures rely too heavily on additional safeguards and pay insufficient attention to reducing hazardous factors at their origins. This study introduces the concept of inherent safety and develops a tool called the Generic Laboratory Safety Metric (GLSM) to minimize laboratory hazards. Through a case study of a university laboratory, it is demonstrated that the GLSM can effectively increase safety levels after risk-based inherently safer retrofitting, providing relatively satisfactory laboratory conditions. This work presents a set of generic solutions and the GLSM as an implementation tool for achieving inherently safer laboratories, contributing to risk quantification and identification of key risk factors for targeted and fundamental safety measures.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2023)
Article
Engineering, Environmental
Chee Yung Pang, Gulnaziya Issabayeva, Yean Ling Pang, Mee Chu Wong, Mohamed Kheireddine Aroua
Summary: The demand for zinc oxide increased significantly during the Covid-19 pandemic, as gloves became essential in daily life. This study successfully demonstrated the removal and recovery of zinc ions from real industrial wastewater, using an adsorption-desorption-chemical precipitation approach, to produce usable secondary zinc oxide.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Engineering, Environmental
C. S. Then, I. A. W. Tan, W. H. T. Ting, S. F. Salleh, N. Abdul Wahab, Abdul Aziz Abdul Raman
Summary: In this study, a dynamic model for batch crystallizer was developed to investigate the eutectic freeze crystallization process of ammonium sulphate (AS) in aqueous solutions. Through process optimization, the significant parameters were identified as initial concentration and initial temperature of cooling fluid, and it was found that AS and ice reached maximum crystallization at 255 K which was close to the eutectic point of AS-water system at 254 K. The dynamic model established in this study demonstrated effectiveness in predicting the crystallization of AS in aqueous solutions.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Review
Engineering, Electrical & Electronic
Md Shafiullah, Saidur Rahman, Binash Imteyaz, Mohamed Kheireddine Aroua, Md Ismail Hossain, Syed Masiur Rahman
Summary: The Southeast Asian region is increasingly interested in smart city initiatives, with a focus on promoting energy efficiency, reducing greenhouse gas emissions, and implementing renewable energy targets. However, challenges related to leadership, governance, citizen support, and investment, among others, arise in implementing smart energy systems. This article discusses the concept of smart cities, highlights different types of initiatives in Southeast Asian countries, and explores the challenges and potential solutions for implementing smart energy systems.
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.
