Article
Environmental Sciences
Viktor Alexandrovich Kuznetsov, Daria Mikhailovna Bozheeva, Andrey Viktorovich Minakov
Summary: Combustion or gasification of coal in a nitrogen-free environment is a promising technology for reducing the carbon footprint. This study numerically investigates the oxy-gasification processes of pulverized coal in a CO2-H2O-O-2 environment and examines the influence of various factors on the physicochemical processes and syngas composition. The results show that increasing oxygen concentration in the blast can stabilize ignition and combustion of coal, while decreasing the excess oxygen ratio leads to increased combustible losses in the gasifier.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Dmitry Pashchenko
Summary: This paper presents the concept of regenerating hydrogen-rich fuel through photochemical CO2 transformation. The system involves CO2 capture and algae cultivation for fuel regeneration. The study found that gasification of algae biomass can produce high-calorific hydrogen-rich gas, and the system also allows heat recuperation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Qiang Sun, Hongxia Gao, Teerawat Sema, Zhiwu Liang
Summary: This study compared the CO2 desorption performance of different Si/Al ratios of HZSM-5 zeolites and successfully synthesized hierarchical HZSM-5 with higher catalytic activity. The results showed that desilication by modification in sodium hydroxide could significantly improve the mesoporous surface area and enhance CO2 desorption capacity. These findings are important for improving catalyst design in CO2 capture technology.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Milad Irani, Mahsa Mehrara, Parisa Mojaver, Ata Chitsaz
Summary: This study evaluates and compares a hybrid system of solar methane reforming, including different reforming technologies, gas turbine performance, solar tower plant performance, and CO2 capture and recycle unit. The results show that bi-reforming and auto-reforming require the least solar energy, while the tri-reforming coupled system has the highest power production of the gas turbine.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Engineering, Mechanical
Takeharu Hasegawa
Summary: Utilizing ammonia as a medium, combined with oxyfuel integrated coal gasification combined cycle system, can establish an energy system suitable for backup power and load-leveling, providing the incentive for building future zero-emission thermal power plants.
JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME
(2021)
Article
Engineering, Chemical
Xiaowan Peng, Yun-Lei Peng, Meng Huo, Jin Zhao, Qiuwei Ma, Bei Liu, Chun Deng, Mingke Yang, Baocan Dong, Changyu Sun, Guangjin Chen
Summary: To enhance CO2 capture capacity and selectivity, researchers have developed a porous slurry composed of ZIF-8 and C16 isoparaffin. This optimized slurry exhibits low viscosity, high sorption speed, and low CO2 sorption heat. It also demonstrates higher CO2 sorption capacity and selectivity compared to existing commercial CO2 absorbents. Additionally, the slurry system can be easily regenerated through pressure swing, making it a promising alternative for separating IGCC gas with higher efficiency and lower energy cost.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Dmitry Pashchenko
Summary: Hydrogen-rich fuel can effectively reduce CO2 emissions in a combined cycle power plant. The addition of hydrogen to methane nonlinearly decreases CO2 emissions, and using renewable energy for steam methane reforming can further reduce emissions.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Review
Green & Sustainable Science & Technology
Zucheng Cheng, Shaohua Li, Yu Liu, Yi Zhang, Zheng Ling, Mingjun Yang, Lanlan Jiang, Yongchen Song
Summary: The review discussed the effects of additives on hydrate formation and proposed future research directions, such as the development of more environmentally friendly thermodynamic additives and process optimization.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Engineering, Chemical
Nela Slavu, Cristian Dinca
Summary: This paper explores the utilization of plastic waste for electricity production with low carbon dioxide emissions through the gasification process. The co-gasification of plastic waste with biomass can effectively reduce CO2 emissions. Furthermore, the integration of the chemical absorption process in pre- and post-combustion can further decrease CO2 emissions and has a certain impact on global efficiency.
Article
Chemistry, Physical
Kevin Bioche, Laurent Bricteux, Andrea Bertolino, Alessandro Parente, Julien Blondeau
Summary: This article investigates the combustion characteristics of ammonia/hydrogen blends in a turbulent premixed burner, revealing a trade-off between NOX and NH3 emissions. Adjusting the hydrogen content can achieve flame propagation characteristics similar to a lean methane flame.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Guobiao Zhang, Yifeng Shen, Yun Qi, Hengfeng Shan, Bing Li, Liang Xu
Summary: Hydrate-based CO2 capture and separation is an effective technology in reducing the greenhouse effect. However, limited research has been conducted on the kinetics of the CO2 + N-2 dissolution-hydration reactions. This study investigated the kinetic characteristics of CO2 + N-2 hydrate formation, focusing on the selective adsorption of CO2 and N2 during the process. The findings provide valuable insights for the application of hydrate-based CO2 capture and CO2/N-2 separation.
Article
Chemistry, Multidisciplinary
Muath S. Al-Bukhari, Ismail Abdulazeez, Mahmoud M. Abdelnaby, Isam H. Aljundi, Othman Charles S. Al Hamouz
Summary: This article reports the synthesis of newly designed 3D porous polymers with tuned porosity. The polymers showed permanent porosity and high thermal stability. They demonstrated selective CO2 capture and the ability for hydrogen storage. The M2 polymer, in particular, showed high adsorption capacity for CO2 and considerable microporosity, making it a potential material for flue gas purification and hydrogen storage.
FRONTIERS IN CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Xiao-Li Yang, Yang-Tian Yan, Wen-Juan Wang, Ze-Ze Hao, Wen-Yan Zhang, Wenhuan Huang, Yao-Yu Wang
Summary: A new 3D Co-MOF with high BET surface area and good water stability was successfully synthesized using two ligands. The MOF exhibits selective adsorption of Congo red and high CO2 adsorption capacity, as well as excellent CO2 chemical conversion.
INORGANIC CHEMISTRY
(2021)
Article
Energy & Fuels
David Berstad, Geir Skaugen, Simon Roussanaly, Rahul Anantharaman, Petter Neksa, Kristin Jordal, Stian Traedal, Truls Gundersen
Summary: The capture conditions for CO2 vary greatly among industrial point sources. Different capture technologies are required depending on the CO2 fraction and pressure level to achieve cost- and energy-efficient decarbonization. This study proposes a process design for low-temperature CO2 capture from an Integrated Gasification Combined Cycle (IGCC) power plant. Steady-state simulations were conducted and the performance of the overall process and major components were investigated. The results show that compressor and expander efficiencies, as well as synthesis gas separation temperature, have the highest impact on power requirements. Modifying the process to produce cold liquid CO2 for ship transport increases net power requirements by 16% and is suitable for capturing CO2 for shipping.
Article
Chemistry, Multidisciplinary
M. Abdullah Khan, Ahad Hussain Javed, Memoona Qammar, Muhammad Hafeez, Muhammad Arshad, Mazhar Iqbal Zafar, Afrah M. Aldawsari, Afzal Shah, Zia Ur Rehman, Naseem Iqbal
Summary: The research shows that the type and content of nitrogen directly affect the adsorption and release behavior of carbon materials towards CO2, with higher nitrogen loading leading to higher adsorption enthalpy values and significant CO2 uptake at high temperatures. The process is reversible and the adsorbed CO2 can be easily released with a mild vacuum exposure.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Thermodynamics
Subha Mondal, Chitta Sahana, Sudipta De
Summary: Utilizing saturated water exiting the high-pressure vapour separator as the motive stream for an ejector in a flash steam cycle can enhance power output and reduce thermal energy losses. The use of the ejector increases steam pressure and power output, leading to a 6.67% increase in maximum achievable power output and a 4.5% reduction in levelized cost of electricity compared to the baseline cycle.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Subha Mondal, Chitta Sahana, Sudipta De
Summary: In this study, an ejector-assisted dual-evaporator organic flash refrigeration cycle is integrated with a single flash geothermal steam cycle. The integrated cycle shows higher second law efficiency compared to the single flash geothermal steam cycle, but lower than a dual flash steam cycle. When components are removed, the organic flash refrigeration cycle only produces power output, while the integrated single flash geothermal steam cycle and organic flash refrigeration cycle yield higher efficiency than the dual flash steam cycle. Using n-pentane as the working fluid instead of isopentane slightly improves the performance of the combined cycle.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Sayan Das, Avishek Ray, Sudipta De
Summary: India, with a large poor population, faces challenges in supplying centralized grid power to remote villages due to adverse topography and poor economic conditions. A decentralized energy combination using locally available resources proves to be a more sustainable solution. The cost and environmental impact of storage devices and dispatch strategies play a significant role in the economy of such a hybrid system. This study analyzes the techno-economic factors of five storage devices and their dispatch strategies, highlighting the benefits of zinc bromide batteries.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2022)
Article
Green & Sustainable Science & Technology
Sayan Das, Avishek Ray, Sudipta De
Summary: This study explores an optimized desalination unit driven by renewable energy for coastal villages in Tamil Nadu, India, in order to address the severe water crisis. The analysis optimizes economic and environmental impacts, leading to the conclusion that the best solution is to use renewable PV-wind-battery systems supported by a small diesel generator and reverse osmosis desalination technique.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Archishman Bose, Richard O'Shea, Richen Lin, Aoife Long, Karthik Rajendran, David Wall, Sudipta De, Jerry D. Murphy
Summary: This paper investigates the environmental and economic performance of photosynthetic biogas upgrading at different scales and highlights its benefit as a low-carbon technology. The results show that the process can reduce emissions and achieve high returns at an industrial scale, with a biomethane sale price of 3 ceuro/kWh.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
Sayan Das, Sudipta De
Summary: Increasing the share of renewable energy in power supply is a global priority, especially in remote areas where reliable grid power is not available. However, issues such as limited availability of local renewable resources, high unit electricity cost, and investors' uncertainty in return on investment pose challenges. This study aims to find technically efficient, economically optimal, and environmentally friendly energy combinations for distributed generation, using a comprehensive analysis that integrates techno-economic optimization, uncertainty analysis, and environmental impact assessment. The analysis results suggest that a solar photovoltaic-diesel generator-battery system combination is the possible optimum solution, with a cost of electricity of $0.21/kW.h, a standard deviation of 0.07 for investment risk, and moderate environmental impact.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Sayan Das, Sudipta De
Summary: Decentralized hybrid energy system is considered as a potential sustainable solution for global energy transition. Optimization for better sustainability is complex, involving technical, economic, and environmental issues. A methodology integrating techno-economic optimization, life cycle assessment, and multi criteria decision making approach is demonstrated for a remote Indian village, aiming to achieve technically efficient, economically feasible, and environmentally benign energy solutions.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Green & Sustainable Science & Technology
Subha Mondal, Akash Saha, Sudipta De
Summary: Using CO2-propane and CO2-R152a mixtures as working fluids can reduce the operating pressure of the CO2 cycle, resulting in higher output power and lower electricity costs.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2023)
Article
Thermodynamics
Sayan Das, Sudipta De
Summary: The global energy transition faces the challenge of meeting increasing energy demand at an affordable cost with low carbon options. Each country needs to prioritize strategies based on their energy sector's strengths, weaknesses, opportunities, and threats. A multi-criteria decision-making approach is critical to determine the appropriate priority of strategies for a better energy transition towards sustainability.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
Sayan Das, Sayak Pradhan, Sudipta De
Summary: Decentralized hybrid renewable energy systems are becoming possible solutions for remote locations without grid power. Electrochemical storage systems are currently the most common devices used to bridge the gap between demand and supply. An alternative option could be generating hydrogen with excess renewable power, which can then be converted back to electricity with fuel cells. However, the practical feasibility of these options depends on their economic viability and return on investment risks.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Inorganic & Nuclear
Rupam Sen, Sudipta De, Antonio M. dos Santos, Livia B. L. Escobar, Paula Cristina Brandao, Filipe A. Almeida A. Paz, Mario S. Reis, Zhi Lin
Summary: A novel triazole bridged cobalt fluorophosphate coordination polymer has been synthesized and characterized. The compound consists of Co-5 clusters that build the whole framework, with all cobalt centers in octahedral geometry. The compound shows antiferromagnetic interactions among the Co(II) ions and exhibits high catalytic activity in the conversion of olefins to their corresponding epoxides, with a selectivity of up to 65% and high TON numbers.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Green & Sustainable Science & Technology
Soumitra Pati, Sudipta De, Ranjana Chowdhury
Summary: Biomass co-gasification and syngas fermentation using wheat straw and sugarcane bagasse as feedstock was studied. An equilibrium model was developed using Aspen plus to analyze the process performance. Regression equations were constructed to account for the effects of biomass ratio, gasification temperature, and equivalence ratio on ethanol production, energy efficiency, and CO2 emission. Multi-objective optimization was performed to maximize ethanol production and system efficiency and minimize CO2 emission, and an optimum condition was identified.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Thermodynamics
Chitta Sahana, Sudipta De, Subha Mondal
Summary: In this study, the steam flashing device of the conventional combined flash binary geothermal cycle (CFBGC) is replaced by an ejector to enhance power output. The optimized ejector assisted combined flash binary geothermal cycle (EACFBGC) achieves a 8.08% higher second law efficiency and a 5.7% lower levelized cost of electricity compared to the conventional CFBGC for geo-fluid available at 170 degrees C.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Risav Dutta, Sayan Das, Sudipta De
Summary: The global energy transition requires an increasing share of renewable energy in the power mix. The challenges of distributed renewable energy systems lie in the intermittency of resources and the variability of load. Uncertainty in load affects the capacity determination of hybrid energy systems and accurate forecasting can minimize this uncertainty. This study integrates accurate load forecasting with techno-economic and environmental impact assessment to improve economic and environmental performance and enhance overall sustainability.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Soumitra Pati, Sudipta De, Ranjana Chowdhury
Summary: This study evaluates the techno-economic feasibility and environmental sustainability of a co-gasification-fermentation hybrid model for bio-ethanol production. The results show that the model is economically viable and has lower CO2 emissions compared to conventional bio-ethanol production processes.
JOURNAL OF CLEANER PRODUCTION
(2023)
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.
