Article
Chemistry, Physical
Manaf Zghaibeh, El Manaa Barhoumi, Paul C. Okonkwo, Ikram Ben Belgacem, Wesam Hassan Beitelmal, Ibrahim B. Mansir
Summary: This paper discusses the feasibility of converting solar energy into hydrogen in a Photovoltaic Hydrogen Station (PVHS) in southern Oman, and presents the sizing of equipment and estimation of hydrogen production in a 5 MWp PVHS. The analysis of investment cost, net profit, and levelized hydrogen energy cost reveals the potential benefits of the project. The findings demonstrate promising green hydrogen production projects in Oman.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Jakov Simunovic, Ivan Pivac, Frano Barbir
Summary: This study examines the capacity and location of hydrogen refueling stations in Croatia, considering various configurations in the absence of hydrogen users. The evaluation includes different options for hydrogen production and charging stations, as well as transportation methods, with a focus on cost and benefits.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
El Manaa Barhoumi, Paul C. Okonkwo, Ikram Ben Belgacem, Manaf Zghaibeh, Iskander Tlili
Summary: Green hydrogen plays a crucial role in reducing carbon dioxide emissions and dependence on fossil fuels, as well as improving the economy of the energy sector. This study analyzes three methods for green hydrogen production based on photovoltaic systems and uses techno-economic models to calculate the Levelized Hydrogen Cost (LHC) for different system configurations. The results of the optimization analysis enable the selection of the optimal solution and show the potential of grid-connected PV systems for cost-effective green hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Paul C. Okonkwo, Ibrahim B. Mansir, El Manaa Barhoumi, Wilfred Emori, Ahmed Bahgat Radwan, Rana A. Shakoor, Paul C. Uzoma, M. Raja Pugalenthi
Summary: This study investigated the optimal solution for a hybrid energy system using meteorological data and HOMER software. The results showed that the selected system had low cost and high efficiency, making it suitable for meeting the hydrogen production and refueling station demands of the AI-Kharj community.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Lifei Song, Weijun Gao, Liting Zhang, Qifen Li, Hongbo Ren
Summary: With the goal of achieving carbon peak in 2030 and carbon neutrality in 2060, the transportation sector in China will face continuous pressure on carbon emissions, making the application of hydrogen fuel cell vehicles crucial. The production of green hydrogen, particularly through photovoltaic hydrogen production, is of practical significance for hydrogen refueling stations. A study on a hydrogen refueling station in Shanghai showed that a photovoltaic hydrogen refueling station can have good economic benefits with a hydrogen price of 6.23 USD or higher, and it can also significantly reduce carbon emissions compared to conventional hydrogen refueling stations, providing environmental benefits.
Review
Chemistry, Physical
Zheng Tian, Hong Lv, Wei Zhou, Cunman Zhang, Pengfei He
Summary: This paper systematically presents the key equipment configuration and quantitatively evaluates the process optimization technology of hydrogen refueling stations (HRSs), and proposes existing problems and future development prospects, laying the foundation for further research on the technical economy of HRSs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Eero Vartiainen, Christian Breyer, David Moser, Eduardo Roman Medina, Chiara Busto, Gaetan Masson, Elina Bosch, Arnulf Jager-Waldau
Summary: Green hydrogen will be a crucial component of the future 100% sustainable energy and industrial system, with a certain proportion of solar and wind electricity being used for hydrogen production through water electrolysis. It is anticipated that by 2030 and 2050, electrolyzer capital expenditure and hydrogen costs will significantly decrease, particularly with the continuous decline in solar PV costs.
Article
Chemistry, Physical
Dong-Hwan Kim, Jae -Yong Lim, Woo-Il Park, Choong-Hee Joe
Summary: This study conducts a quantitative risk assessment of a mobile hydrogen refueling station and finds that risks are mostly within acceptable levels. The greatest risk factor is an accident resulting from the rupture of the tube trailer at the refueling site.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Alamir H. Hassan, Zhirong Liao, Kaichen Wang, Chao Xu, Mostafa M. Abdelsamie
Summary: This study analyzes the economic and environmental impacts of different operating conditions and design parameters on PEMWE, aiming to enhance economic feasibility and reduce environmental concerns. The findings suggest that increasing cathode pressure, operating temperature, and decreasing membrane thickness can achieve economic viability and environmental sustainability simultaneously.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
L. Bartolucci, S. Cordiner, V. Mulone, C. Tatangelo, M. Antonelli, S. Romagnuolo
Summary: In recent decades, the impacts of climate change due to greenhouse gas emissions have become more severe, prompting international authorities to seek green solutions for sustainable economic development. One such solution is the reduction of fossil fuel usage in the transportation sector, with hydrogen emerging as a promising alternative due to its potential as an emission-free fuel when produced using renewable energy sources. However, there are several barriers to overcome, including production costs and the lack of distribution and storage infrastructure. This study proposes a multi-hub configuration for hydrogen production, combining on-site PV-powered electrolysis and centralized steam methane reforming. The results show that the size of the refueling station significantly affects economic performance, with larger stations offering greater benefits such as a reduction of up to 40% in the Levelized Cost of hydrogen. The synergistic effects of SMR and electrolyzer enable limited CO2 emissions per unit mass of hydrogen, and interconnecting multiple stations can further enhance environmental benefits.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Weiyi Cui, Yupeng Yuan, Liang Tong, Boyang Shen
Summary: The effects of different factors on hydrogen leakage diffusion were studied through numerical simulation, using Ningbo's seaport hydrogen refueling station as the research object. The presence or absence of obstacles significantly influences the leakage angle's impact on hydrogen leakage. Wind direction can greatly affect hydrogen leakage, with downwind and sidewind accelerating discharge and reducing risk. Temperature and humidity have little effect on hydrogen diffusion.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Yongjun Li, Zhirong Wang, Xuemeng Shi, Rujia Fan
Summary: This study simulates the dispersion of hydrogen leakage and the minimum safe distance of explosion in a mobile hydrogen refueling station. A 3D full-scale geometry is established and experimental data validates the numerical models. The effects of ventilation scenarios and ambient wind on hydrogen volume and diffusion distance are analyzed. The investigation provides valuable insights for evaluating and preventing hydrogen leakage accidents in mobile hydrogen refueling stations.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Chemistry, Physical
Alper Cicek
Summary: The issue of electrification of transportation is being discussed due to the depletion of conventional resources and environmental problems. Different options have been proposed for the electrification of electric vehicles (EVs), but the scarcity of charging, swapping, or refueling stations is hindering the increased prevalence of EVs. An all-in-one EV station (AiOEVS) that can serve all types of EVs is needed. This study proposes an economically optimal energy management model of an AiOEVS, including a photovoltaic system, electrolyzer, and different charging options for EVs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Tomoya Suzuki, Kento Shiota, Yu-ichiro Izato, Masahiro Komori, Koichi Sato, Yasuyuki Takai, Takayuki Ninomiya, Atsumi Miyake
Summary: Hydrogen refueling stations (HRSs) are essential for fuel cell vehicles in Japan, but also pose potential hazards such as explosions or fires. With advancements in technology and operational experience, conducting qualitative and quantitative risk assessments for HRSs has become increasingly important.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Sang-Hyun Bae, Ju-Sung Lee, Supaporn Wilailak, Ga-Young Lee, Chul-Jin Lee
Summary: With the increasing number of hydrogen fuel cell vehicles, the installation of necessary infrastructure such as hydrogen refueling stations (HRSs) is crucial. However, the use and storage of high-pressure gaseous hydrogen in conventional HRSs have limitations and safety risks. Ammonia, with its high storage capacity and ability to be stored as a liquid, is considered a potential solution as a carrier for hydrogen. However, ammonia is toxic and can be fatal if accidentally exposed to humans. Therefore, this study aims to develop a process and safety design for HRSs using ammonia as the hydrogen carrier.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Medhat A. Nemitallah, Ibrahim B. Mansir, Md Azazul Haque, Ahmed Abdelhafez, Mohamed A. Habib
Summary: The effects of adiabatic flame temperature (AFT) on stability, combustion, and emission characteristics of swirl-stabilized premixed oxy-methane flames are investigated numerically. The results show that the shape and size of the inner recirculation zone (IRZ) dominate the flame shape and flame-flow interactions. At low to moderate AFTs, the IRZ spreads downstream and becomes stronger, resulting in increased flame stability and more uniform axial temperature profiles.
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
(2023)
Review
Chemistry, Physical
Paul C. Okonkwo, El Manaa Barhoumi, Ikram Ben Belgacem, Ibrahim B. Mansir, Mansur Aliyu, Wilfred Emori, Paul C. Uzoma, Wesam H. Beitelmal, Ersin Akyuz, Ahmed Bahgat Radwan, R. A. Shakoor
Summary: Hydrogen embrittlement is a well-known phenomenon in high-strength and storage materials, causing subcritical crack growth, fracture initiation, loss in mechanical properties, and catastrophic failure. The fundamental mechanism of hydrogen embrittlement remains unclear, although various mechanisms responsible for crack development, growth, and fracture have been discussed and reported.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Tao Hai, Ibrahim B. Mansir, Asmaa Khudhair Yakoop, Hasan Mulki, Ali E. Anqi, Ahmed Deifalla, Yong Chen
Summary: Addressing the energy crisis and global warming issues in the future requires the urgent development of efficient and environmentally-benign power generation systems. The biomass-driven solid oxide fuel cell (SOFC) system, hybridized with wind turbines and a PEM electrolyzer, shows potential as a clean power supply for decentralized applications. By incorporating wind turbines, the hybrid system achieves a 7.3% improvement in exergy efficiency and a 13.0% reduction in CO2 emissions. However, the increase in unit electricity cost due to the addition of wind turbines and water electrolyzers needs to be considered.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Thermodynamics
Hao-Feng Lin, Ibrahim B. Mansir, Sayed M. Eldin, Nawaf Alkhamis, Sultan Alqahtani, Sultan Alshehery
Summary: This study investigates the efficiency of segmented in-plane solar annular thermoelectric generator from economic, energetic and exergetic points of view. The results show that the segmented thermoelectric generator is more efficient in terms of economic cost for high heat fluxes. Case 4 provides the lowest dollar/watt value for heat fluxes less than 40 kW/m2.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Correction
Biology
Ibrahim B. Mansir, Alhassan A. Jaoji, Ali S. AlArjani, Sunday A. Jonah
RADIATION AND ENVIRONMENTAL BIOPHYSICS
(2023)
Review
Biology
Ibrahim B. B. Mansir, Alhassan A. A. Jaoji, Ali S. S. AlArjani, Sunday A. A. Jonah
Summary: This paper provides a review of the natural background radiation in the Kingdom of Saudi Arabia, focusing on measurements conducted over the past few decades. Various materials, including soils, building materials, terrestrial sites, and mining sites, were investigated using different experimental techniques. The results indicate that most of the measured locations have natural radiation levels within acceptable limits, although some isolated areas show elevated dose rates. The study suggests the use of improved radiological survey methods to cover the entire country and re-evaluate areas with comparatively high dose rates, particularly in dwellings and mining sites.
RADIATION AND ENVIRONMENTAL BIOPHYSICS
(2023)
Article
Green & Sustainable Science & Technology
Heng Chen, Ibrahim B. Mansir, Bhupendra Singh Chauhan, Ahmed Al-Zahrani, Ahmed Deifalla, Yinhai Hua, Fan Peng
Summary: The study enhances the exergy and energy outputs of a PTC-PV unit by integrating it with porous metal foam and rotating the absorber tube. The rotational PTC-PV-UPF unit shows the highest energy and exergy outputs among the simulated cases. The energy and exergy outputs of the RPTC-PV-UPF unit at the optimum operating condition are 67.41% and 77.47% higher than that of the PTC-PV unit.
Article
Energy & Fuels
Ibrahim B. Mansir, Paul C. Okonkwo, Naeim Farouk
Summary: Increased use of renewable energy sources is expected to contribute to long-term sustainability and robust economic growth. A better global economy and lower greenhouse gas emissions are possible due to intensive research into more effective energy production, storage, and utilization technologies. The exciting solution for advancing the development of green hydrogen production and the clean transportation sector is the conversion of electrical energy generated from wind parks into green hydrogen.
Article
Thermodynamics
Man -Wen Tian, Ibrahim B. Mansir, Sayed M. Eldin, Hamdi Ayed, Hassen Loukil, Nawaf Alkhamis
Summary: Research shows that using a two-stage thin-film solar thermoelectric generator is a cost-effective option compared to a single-stage design, and it can generate more power. The use of bismuth tellurides in the two-stage configuration significantly reduces the cost while improving the power output and exergy efficiency of the system.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Tao Hai, Ibrahim B. Mansir, Bader Alshuraiaan, Azher M. Abed, H. Elhosiny Ali, Mahidzal Dahari, Hind Albalawi
Summary: This study investigates the performance enhancement of a solar air heater using inclined impinging jets on the heater surface. Two main sets of arrangements are considered for the jet nozzles including the parallel and crossing orientation of nozzles in consecutive rows. It was found that the proposed jet solar air heater improved the Nu number and thermohydraulic performance parameter compared to the conventional unimproved solar air heater.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Engineering, Environmental
Xi Chen, Ibrahim B. Mansir, Bhupendra Singh Chauhan, Saleh Mahmoud, Hamdi Ayed, Hassen Loukil, Ruicheng Tian, Wael Al-Kouz
Summary: This study proposes a novel trigeneration model integrated with a biogas upgrading unit to produce electricity, desalinated water, and methanol. Compared to previous studies, this process improves thermodynamic, economic, and environmental performances, with negative CO2 emission as its main feature. The system is simulated in the Aspen HYSYS software and investigated from the perspectives of energy, exergy, economics, and environment. The overall energy and exergy efficiencies are 51.54% and 87.39%, respectively, showing significant improvements compared to existing literature.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Engineering, Environmental
Man-Wen Tian, Zubairu Abubakar, Bhupendra Singh Chauhan, Saleh Mahmoud, Chuang Lui, Ibrahim B. Mansir
Summary: A novel integrated process is proposed to generate power, hydrogen, and heat through water electrolysis using captured carbon dioxide from power plant flue gas. The system consists of a CO2 capture unit, a solid oxide electrolysis unit, a steam power cycle, a heat recovery unit, and an ammonia power cycle. The overall energy and exergy efficiencies of the power plant are 34.84% and 83%, respectively. The total net output power is determined at 60046.6 kW, and the heat recovery values are 1158 MW and 22.17 MW for the SOEU and CCU units, respectively. The largest exergy destruction occurs in the HRU unit (79%) with a value of 1066340 kW. The environmental analysis shows no direct CO2 emissions and an indirect emission rate of 0.53 kgCO2/kWh. The economic analysis indicates a total annual cost of 75.36 M$ and a production cost of electricity of 0.15 $/kW.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Thermodynamics
Wei Zhang, Chen Shu-jin, Ibrahim B. Mansir, Pradeep Kumar Singh, Fatimah Malek Mohsen, Ahmed Farag, Mahidzal Dahari, H. Elhosiny Ali, Souhail Mohamed Bouzgarrou
Summary: This paper proposes a novel linear arrangement of legs for annular thermoelectric generators, which greatly improves design flexibility compared to the conventional π structure. Numerical simulations were conducted to investigate the effects of various parameters on the performance of the linear annular thermoelectric generator. The results showed that a height ratio, angle ratio, and thickness ratio of 0.5 achieved the highest conversion and exergy efficiencies, while minimizing thermal stress on the legs and cost per watt of output power.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Engineering, Multidisciplinary
Ibrahim Balarabe Mansir
Summary: This article predicts the performance of an integrated energy system using the neural network method and numerical data. The system studied consists of a gas turbine, air preheater, and various subsystems. By changing the parameters, important outputs of the system were extracted and modeled using functions. The results show high accuracy, and the influence of each variable on the system's performance was analyzed using three-dimensional response surface diagrams.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Engineering, Multidisciplinary
Ibrahim B. Mansir, Rishabh Chaturvedi, Zubairu Abubakar, Dahiru Umar Lawal, Jamilu Abdullahi Yusuf
Summary: This study examined the heat transfer and entropy generation rate of water-Fe3O4 magnetic nanofluid flow in three twisted tubes with different cross-sectional shapes. The results showed that the magnetic field effect can significantly enhance the convective heat transfer coefficient and optimize the performance within certain parameter ranges.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
