Article
Thermodynamics
K. Owebor, E. O. Diemuodeke, T. A. Briggs
Summary: The study investigated the thermo-economic and environmental analysis of an integrated power system with carbon capture and storage, modeling key parameters and proposing CO2 capture and enhanced oil recovery strategies. Cost analysis showed a total cost of $186 million, CO2 avoidance cost of $110 per tonne, levelized cost of energy at $0.123 per kWh, and payback period of 5.2 years. The study also explored parametric simulations and highlighted the potential impact on energy policy and climate action landscapes.
Article
Chemistry, Physical
Akbar Salehi, Seyedmostafa Mousavi, Ahmad Fasihfar, Mehdi Ravanbakhsh
Summary: This study introduces a novel tri-generation plant composed of MCFC unit, SE, HRSG, and two types of ARCs. The system is evaluated from energy, exergy, and environmental impact perspectives. Parametric study shows that the proposed system with GAX or VAR cycle demonstrates acceptable functionality in thermodynamic and environmental aspects.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
Like Zhong, Erren Yao, Hansen Zou, Guang Xi
Summary: A novel combined cooling and power system integrating SOFC, SCO2 partial heating cycle, and ejector refrigeration cycle is proposed, with a multi-objective optimization required to balance conflicting system performance among thermodynamic, exergoeconomic, and environmental aspects.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Thermodynamics
Sambhaji T. Kadam, Alexios-Spyridon Kyriakides, Muhammad Saad Khan, Mohammad Shehabi, Athanasios I. Papadopoulos, Ibrahim Hassan, Mohammad Azizur Rahman, Panos Seferlis
Summary: This study compares the thermodynamic, environmental, and economic performance of different configurations of district cooling plants. The results show that the novel acetaldehyde-N,N-dimethylformamide working fluid has higher absorption refrigeration performance and lower energy consumption.
Article
Thermodynamics
B. Citarella, L. Viscito, K. Mochizuki, A. W. Mauro
Summary: This paper proposes a thermo-economic analysis method to explore design options for commercial refrigeration units based on factors such as refrigerant type, manufacturer and customer perspectives. Results indicate that R449A performs better in the European market, while R454C may be a suitable long-term replacement. Environmental analysis reveals that the optimal performance configuration does not necessarily have the lowest environmental impact.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Korhan Okten, Burak Kursun
Summary: In this study, an absorption refrigeration cycle (ARC) was integrated into the pumped thermal energy storage system (PTES) to increase power generation. Thermodynamic analyses and thermoeconomic evaluation were conducted, indicating that the proposed system has high potential for application, with increased electrical energy supplied to the grid and reduced storage cost.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Jose Ramon Serrano, Francisco Jose Arnau, Luis Miguel Garcia-Cuevas, Fabio Alberto Gutierrez
Summary: Oxy-fuel combustion is an attractive alternative to reduce pollutant emissions. However, purchasing large amounts of high-purity oxygen may be unprofitable for certain industries. This study analyzes the potential of an oxygen production cycle for factories using oxy-fuel combustion, considering prices of high-purity oxygen, electricity, and natural gas. The oxygen is produced using membrane means and waste heat is used to power the cycle. Two cases are analyzed, both showing competitiveness regarding the average price of high-purity oxygen.
Article
Energy & Fuels
Wenpan Xu, Pan Zhao, Feifei Gou, Aijie Liu, Wenze Wu, Jiangfeng Wang
Summary: This study proposes a combined cooling, heating, and power system based on a liquid carbon dioxide energy storage system to achieve stable energy supply. The system utilizes waste heat recycling and a self-evaporating method. Parametric analysis results show that the system has high roundtrip efficiency and energy density, and it has advantages in economic performance for large-scale energy storage systems.
Article
Energy & Fuels
Alhasan Ali Abdulwahid, Hongxia Zhao, Zheng Wang, Guangdi Liu, Essam E. Khalil, Yanhua Lai, Jitian Han
Summary: This study improves a combined transcritical CO2 refrigeration and boosted multi-effect desalination system by increasing the inlet heat source temperature and the number of booster modules, resulting in enhanced desalination efficiency and thermal-economic performance.
Article
Thermodynamics
Jan Wajs, Michal Mrozek, Elzbieta Fornalik-Wajs
Summary: The withdrawal of high-GWP refrigerants will have a significant impact on the maritime industry. This paper proposes a cold supply system concept that uses low-GWP refrigerants and improves energy efficiency in difficult environmental conditions. Comparative thermodynamic analyses were performed to demonstrate the advantages of this concept compared to existing cold supply systems used on ships.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Saman Khalilzadeh, Alireza Hossein Nezhad, Alessandro Romagnoli, Bakytzhan Akhmetov
Summary: This study examines the integration of an absorption heat transformer cycle in CCHP systems, demonstrating through comparisons of different configurations and system performance parameters the advantages of the proposed hybrid system in terms of energy consumption, environmental impact, and economic benefits.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Leyla Khani, Mahsa Mohammadpour, Mousa Mohammadpourfard, Saeed Zeinali Heris, Gulden Gokcen Akkurt
Summary: This article presents a quadruple-generation system combining a solid oxide fuel cell system, a generator absorber heat exchanger absorption refrigeration cycle, and a proton exchange membrane electrolyzer unit. The system is capable of utilizing most of the fuel energy while recovering waste heat and material. Comprehensive studies on the thermodynamic and environmental performances of the system reveal the impacts of key operating parameters. The optimization results demonstrate the potential to achieve a high exergy efficiency of 0.6443.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
David Diskin, Yonah Kuhr, Ido Yohai Ben-Hamo, Sabrina Spatari, Leonid Tartakovsky
Summary: This study examines the feasibility of a novel combined electrothermo-chemical propulsion technology and compares it to battery electric vehicles. The findings suggest that this technology, which includes a fuel-cell, an internal combustion engine, and thermochemical recuperation, performs better in terms of environmental impacts such as climate change and air pollution. The study highlights the potential of alternative propulsion systems and calls for further research in this area.
Article
Thermodynamics
Amit Bhowmick, Balaram Kundu
Summary: A new system for waste heat recovery process, which combines cooling and power cycle, is proposed in this study. The thermodynamic and economic viability of the system is comprehensively analyzed. The results show that the combustion chamber is the major source of irreversibility and there is potential for improvement. A parametric study is conducted to assess the effect of major design parameters, and a multi-objective optimization is performed to determine the overall exergy efficiency and total product cost. The findings provide insights for practical applications and cost-effectiveness.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Fatih Yilmaz
Summary: Due to environmental concerns, green energy generation and effective use of renewable energy-based multigeneration systems have become increasingly important. This study proposes a new flash-binary geothermal power plant that can generate beneficial outputs such as power, hydrogen, hot and clean water. Thermodynamic, economic, and environmental impact analyses are conducted to examine and investigate the energy efficiency, exergy efficiency, cost ratio, and emission rate of the whole plant and subsystems. The analysis demonstrates that the energetic performance of the multigeneration plant is significantly greater than that of the single-generation plant.
Article
Thermodynamics
Ifeanyi Henry Njoku, Ogheneruona E. Diemuodeke
Summary: This study conducted a comparative techno-economic analysis of wet and dry cooling systems for steam turbine cycles in five tropical regions in Nigeria. The results indicate that in hot and dry areas, wet cooling systems perform better, while in cooler and more humid regions, dry cooling systems are more favorable. High ambient temperatures increase the size and cost requirements of air-cooled systems, while relative humidity significantly influences the total power consumption of water-cooled systems.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Engineering, Mechanical
Ogheneruona E. Diemuodeke, Ilai Sher
Summary: This paper introduces novel analytical droplet breakup criteria based on the critical Weber number, emphasizing the importance of turbulence effects on droplet breakup criteria. The model outperforms existing criteria models by supporting parametric investigations in turbulent flow fields and showing good agreement with experimental data. It is expected to be incorporated into larger CFD codes for spray simulation and has potential applications in other natural and engineering systems.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING
(2021)
Article
Energy & Fuels
Zafar A. Khan, Muhammad Imran, Abdullah Altamimi, Ogheneruona E. Diemuodeke, Amged Osman Abdelatif
Summary: In addition to zero-carbon generation, the decreasing cost of renewable energy sources is enabling the increased use of distributed-generation sources. However, without appropriate design and understanding of the load nature, renewable energy sources can be unreliable and expensive. Limited research has been done on designing small-scale hybrid energy systems for irrigation pumping, hence this paper presents a comprehensive feasibility analysis for an off-grid hybrid renewable energy system for irrigation in Sudan. The results suggest that the selection of the system depends on the cost, wind speed volatility, solar radiation, and system size, and currently, hybridization is not the primary option at most sites.
Article
Energy & Fuels
Zafar A. Khan, Muhammad Imran, Jamal Umer, Saeed Ahmed, Ogheneruona E. Diemuodeke, Amged Osman Abdelatif
Summary: Climate change is causing more frequent droughts, leading to water scarcity and affecting crop yields. Underground pumping systems can provide water for crops, but the energy required is expensive and harmful to the environment. Developing renewable energy sources to power water pumping systems is crucial for improving crop yields and reducing carbon emissions, especially in regions like northern Sudan that are more vulnerable to drought.
Article
Thermodynamics
K. Owebor, E. O. Diemuodeke, T. A. Briggs
Summary: The study investigated the thermo-economic and environmental analysis of an integrated power system with carbon capture and storage, modeling key parameters and proposing CO2 capture and enhanced oil recovery strategies. Cost analysis showed a total cost of $186 million, CO2 avoidance cost of $110 per tonne, levelized cost of energy at $0.123 per kWh, and payback period of 5.2 years. The study also explored parametric simulations and highlighted the potential impact on energy policy and climate action landscapes.
Article
Energy & Fuels
Kesiena Owebor, Ogheneruona E. Diemuodeke, Tobinson A. Briggs, Ogheneakpobo J. Eyenubo, Oreva J. Ogorure, Michael O. Ukoba
Summary: This paper presents a multi-criteria optimization of integrated power systems. It proposes, models, and analyzes five power configurations that combine various cycles and technologies. The proposed plants are further subjected to TOPSIS optimization and the results suggest the most ideal solution. This research highlights the importance of incorporating carbon capture technology and retrofitting existing power plants with more efficient and environmentally friendly technologies.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Article
Energy & Fuels
Mike Uche Ajieh, Nosakhare Andrew Amenaghawon, Kesiena Owebor, Oghenero Henry Orugba, Esua Bassey Bassey
Summary: Water-soluble polymers are used to improve drilling operations, but excessive utilization of these additives may have negative implications on drilling outcomes, increasing the equivalent circulating density may lead to formation damage.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Constantinos Vassiliades, Ogheneruona Endurance Diemuodeke, Eric Boachie Yiadom, Ravita D. Prasad, Wassim Dbouk
Summary: This study examines the cooking space of the Global South, particularly in rural communities, and proposes alternative energy sources, technologies, and policies for clean cooking services. By conducting a comparative study across Fiji, Ghana, and Nigeria, the study aims to harmonize stakeholders and present policy pathways for adopting clean cooking services in rural communities for sustainable development. A government-driven, followed by incentive-driven and private-sector-driven business model is proposed for the clean cooking business in rural areas.
Review
Energy & Fuels
Nnaemeka Vincent Emodi, Chukwumerije Okereke, Fidelis Ibiang Abam, Ogheneruona Endurance Diemuodeke, Kesiena Owebor, Uchenna Alexander Nnamani
Summary: Decarbonising the transport sector in the Global South is crucial for achieving net-zero emissions by mid-century. This study investigates the progress and challenges of decarbonisation in the transport sector, highlighting the need for special mechanisms to address issues such as revenue generation, funding, competition for alternative fuels, and impacts on low-income consumers. The study also identifies cost-effective options and knowledge gaps for future research.
ENERGY STRATEGY REVIEWS
(2022)
Article
Green & Sustainable Science & Technology
M. U. Ajieh, H. I. Owamah, L. C. Edomwonyi-Otu, G. I. Ajieh, P. Aduba, K. Owebor, S. C. Ikpeseni
Summary: The Water Boiling Test (WBT) was conducted to measure carbon monoxide (CO) and particulate matter (PM2.5) emissions. A laboratory setup, called the Laboratory Emission Monitoring System (LEMS), was used to model a typical rural kitchen environment, and a WBT tailored tool for Controlled Cooking Test (CCT) was employed. Five different types of cookstoves were tested, and the CO emissions were represented by categories such as CO-unvented natural draft (COUN) and CO-general cookstove (COGE). Similarly, the PM emissions were represented as PM-unvented natural draft (PMUN) and PM-general cookstove (PMGE). The study found that COGE and CODS had the lowest emissions, while COTH had the highest. Similarly, PMTH had the highest PM emissions. The study highlights the importance of improving cookstove design and ventilation to improve health outcomes in low-income rural areas.
ENERGY FOR SUSTAINABLE DEVELOPMENT
(2023)
Article
Agricultural Engineering
M. O. Ukoba, E. O. Diemuodeke, T. A. Briggs, M. Imran, K. Owebor, C. O. Nwachukwu
Summary: Despite challenges, Nigeria has a potential to utilize biomass resources from forests and crop residues for clean energy generation. The estimated energy potential for crop and forest residues is 3477.02 and 685.90 PJ/yr respectively, indicating the significance of biomass energy in meeting the country's energy demands. The study also proposes policy pathways and biomass-to-energy conversion technologies to promote the penetration of biomass energy in Nigeria.
BIOMASS & BIOENERGY
(2023)
Review
Energy & Fuels
Fidelis Ibiang Abam, Chinedum Oscar Nwachukwu, Nnaemeka Vincent Emodi, Chukwumerije Okereke, Ogheneruona E. Diemuodeke, Abdulhameed Babatunde Owolabi, Kesiena Owebor, Dongjun Suh, Jeung-Soo Huh
Summary: The buildings sector plays a significant role in global energy utilization and carbon emissions. This study examines low-carbon buildings in selected global south regions under deep decarbonization scenarios. The findings highlight the importance of population, gross domestic product, dwelling characteristics, and urbanization as critical drivers of emissions in these regions. It emphasizes the need for total investment from the private and public sectors to achieve decarbonization in the building sector.
FRONTIERS IN ENERGY RESEARCH
(2023)
Proceedings Paper
Energy & Fuels
Ogheneruona E. Diemuodeke, Kesiena Owebor
Summary: This study investigates the utilization of syngas from solid wastes and natural gas, combined with carbon capture technology, to reduce greenhouse gas emissions from power plants and landfills. The results demonstrate that an optimal syngas and natural gas composition of 0.47 and 0.53, respectively, can generate 208.8 MW of electrical power. The system's technical efficiency is 43%, with a carbon dioxide emission factor of 0.029 tonnes per MWh and a CO2 transportation rate of 612.2 kilotonnes per year. The proposed power system is estimated to cost USD 236.7 million, with a unit energy cost of 0.141 USD per kWh, a CO2 avoidance cost of 110 USD per tonne of CO2, and a payback period of 5.2 years. The study also suggests incorporating hydrogen energy storage for reliable electricity supply throughout the year, but further research is needed to optimize its integration into the proposed power plant.
PROCEEDINGS OF THE INTERNATIONAL RENEWABLE ENERGY STORAGE CONFERENCE, IRES 2022
(2023)
Article
Energy & Fuels
J. C. Ofodu, O. A. Ophori, E. O. Diemuodeke
Summary: The study focuses on the thermoeconomic analysis of a proposed combined cooling, heating and power (CCHP) energy system for agrarian communities based on agro-wastes. It shows the feasibility of generating electricity and solving the perishable farm produce issue in Nigeria.
INTERNATIONAL JOURNAL OF AMBIENT ENERGY
(2021)
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.
