Article
Thermodynamics
Alessandro Manzotti, Emanuele Quattrocchi, Antonino Curcio, Stephen C. T. Kwok, Massimo Santarelli, Francesco Ciucci
Summary: Hydrogen is an ideal energy carrier for a sustainable economy, but its current production methods, such as steam reforming and coal gasification, are polluting and energy-intensive. This article focuses on membraneless electrolyzers as a potentially more cost-effective and profitable alternative for hydrogen production, with a levelized cost of hydrogen around 2 USD/kg(H2).
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Engineering, Chemical
Syed Arslan Hassan Naqvi, Tolga Taner, Mehmet Ozkaymak, Hafiz Muhammad Ali
Summary: This study presents hydrogen production through an alkaline electrolyzer, along with a techno-economic and enviro-economic analysis. A prototype of an alkaline electrolyzer is designed and developed using an optimized chemical mixture. The results demonstrate the feasibility of this approach by emphasizing the annual profit of the electrolyzer in terms of the simple payback period of the prototype system.
CHEMICAL ENGINEERING & TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Francesco Superchi, Francesco Papi, Andrea Mannelli, Francesco Balduzzi, Francesco Maria Ferro, Alessandro Bianchini
Summary: This study explores the feasibility of using alkaline electrolyzers to produce green hydrogen by coupling intermittent electric power generation from a wind farm. A realistic model of electrolytic modules was developed, considering efficiency drop, shutdowns, and voltage degradation. The model was calibrated and coupled with real wind farm data to find the optimal combination for the lowest Levelized Cost Of Hydrogen (LCOH). Simulations showed that competitive hydrogen production costs can be achieved, but a future economy of scale in alkaline electrolyzers is needed.
Article
Energy & Fuels
Bradie S. Crandall, Todd Brix, Robert S. Weber, Feng Jiao
Summary: This article provides a techno-economic assessment of green hydrogen carriers, identifying green formic acid as the most cost-effective and safest option. It also offers research and policy outlooks to guide efforts towards a green hydrogen economy.
Article
Chemistry, Physical
Mario Petrollese, Giulia Concas, Francesco Lonis, Daniele Cocco
Summary: This paper conducts a techno-economic analysis of a hydrogen valley. The results demonstrate that a balanced supply from wind and solar energy can lead to improved efficiency and reduced hydrogen production costs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Hadis Alili, Javad Mahmoudimehr
Summary: This study assesses the techno-economic influences of adding a hydrogen energy storage facility to a hybrid photovoltaic/pumped storage hydro-power system. The addition of the hydrogen energy storage unit reduces excess electricity supply and system cost, while improving exergy efficiency.
ENERGY CONVERSION AND MANAGEMENT
(2023)
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)
Review
Agricultural Engineering
R. Yukesh Kannah, S. Kavitha, Preethi, O. Parthiba Karthikeyan, Gopalakrishnan Kumar, N. Vo. Dai-Viet, J. Rajesh Banu
Summary: In order to advance the use of hydrogen as a clean fuel in the future, it is necessary to conduct techno-economic and sensitivity analyses of existing hydrogen production platforms and processes, and to develop new methods to reduce overall production costs. Steam reforming of natural gas is currently the most efficient and cost-effective method for hydrogen production.
BIORESOURCE TECHNOLOGY
(2021)
Article
Thermodynamics
Florian Pruvost, Schalk Cloete, Jan Hendrik Cloete, Chaitanya Dhoke, Abdelghafour Zaabout
Summary: A techno-economic assessment of molten salt pyrolysis process reveals that moderate pressure and limited reactor size can achieve high efficiency and promising economics. In the long-term, turquoise hydrogen can serve as a promising alternative to blue hydrogen in regions with public resistance to CO2 transport and storage. In the medium-term, expensive first-of-a-kind plants can produce carbon that can access smaller high-value markets, ensuring profitable operation even for first movers.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Chemistry, Physical
Sepanta Dokhani, Mohsen Assadi, Bruno G. Pollet
Summary: Population growth and industrial expansion have led to increased energy demand and fossil fuel use, resulting in greenhouse gas emissions and air pollution. Countries are seeking alternatives to fossil fuels, and hydrogen is a promising option for electricity generation. This study examines the production of hydrogen from seawater using a proton exchange membrane electrolyser and explores different energy sources for cost-effective power generation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Multidisciplinary Sciences
Patricia Mayer, Adrian Ramirez, Giuseppe Pezzella, Benedikt Winter, S. Mani Sarathy, Jorge Gascon, Andre Bardow
Summary: A techno-economic analysis and lifecycle assessment were conducted to compare the economics and environmental impacts of blue and green ammonia production. It was found that methane leakage can exacerbate the climate change impacts of blue ammonia in short time horizons, emphasizing the importance of low natural gas leakage for the sustainability of blue ammonia. Technological advances have the potential to further reduce the environmental impacts of photovoltaics-based green ammonia.
Article
Chemistry, Physical
Moritz Raab, Robin Koerner, Ralph-Uwe Dietrich
Summary: This study developed a tool using linear programming approach to evaluate the renewable hydrogen production costs and its interaction with the grid at any location worldwide. Detailed technoeconomic evaluation was conducted for five locations, revealing hydrogen production costs within a certain range. Furthermore, it was found that costs can be further reduced with perspective cost data.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Mohamed Nasser, Hamdy Hassan
Summary: This study evaluates the techno, economic, and environmental aspects of hydrogen production systems powered by low and high temperature electrolyzers using various energy sources. A mathematical model is developed and solved using MATLAB/Simulink based on real data. The results show that waste heat systems have the highest overall efficiency at 22.91%, while PV systems have the lowest efficiency at 11.6%. The Levelized cost of hydrogen (LCOH) ranges from 1.19 to 12.16 $/kg, and the Levelized cost of compressed hydrogen (LCOCH) ranges from 5.03 to 17.1 $/kg. Among the energy sources, waste heat offers the lowest costs. Wind turbine systems are not recommended at certain selling prices, but the waste heat system shows good investment potential. The system configurations also result in significant reductions in CO2 emissions and potential carbon credit gain.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Physical
Moritz Raab, Simon Maier, Ralph-Uwe Dietrich
Summary: The study examines hydrogen transport from Australia to Japan, finding that most studies lack transparency and detailed insights into assumptions, making fair evaluation of different transport pathways challenging. The authors developed a model comparing liquid hydrogen transport with transport via liquid organic hydrogen carrier, finding delivery costs in a certain range.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Youssef Achour, Asmae Berrada, Ameur Arechkik, Rachid El Mrabet
Summary: This study investigates the feasibility of producing green hydrogen using solar PV-electrolysis configuration and compares the performance of three photovoltaic technologies in mountain temperate climate conditions. The results show that polycrystalline technology is the most suitable for hydrogen production, with the lowest degradation rate and cost.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Construction & Building Technology
Jayvant Choudhary, Brind Kumar, Ankit Gupta
Summary: The nature and quantity of filler have a significant impact on the ageing susceptibility of asphalt mixes, as evidenced by changes in TSR, CL, MQ, and MS. For asphalt mixes corresponding to their ITS values, the amount of filler appears to be the key factor influencing their ageing susceptibility. The ageing susceptibility of asphalt concrete mixes is greatly influenced by their apparent film thicknesses.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Water Resources
Nikhil Agrawal, Thomas Patrick, Matthew Davis, Md Ahiduzzaman, Amit Kumar
Summary: This study analyzes water use in multiple provinces and industries in Canada using Sankey diagrams and disaggregated data, finding that the hydro power sector consumes the most water, with oil sands surface mining in Alberta as the largest water consumer, and Alberta also having the largest per capita water consumption.
CANADIAN WATER RESOURCES JOURNAL
(2022)
Article
Thermodynamics
Sunil Kumar, Surath Ghosh, Shaher Momani, S. Hadid
Summary: The population model plays an important role in biology for interpreting the spreading rate of viruses and parasites, as well as identifying fragile species. This study proposed a new YAC fractional operator with a non-singular kernel to solve nonlinear partial differential equations in biological population models. The solutions were expressed in terms of Mittag-Leffler functions and compared with exact solutions, with three examples provided to demonstrate accuracy and efficiency.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2022)
Article
Thermodynamics
Sunil Kumar, R. P. Chauhan, Shaher Momani, Samir Hadid
Summary: This paper investigates the complex behavior of a dynamical system using fractional and fractal-fractional operators, showcasing the evolution of the systems through numerical solutions and proposing methods for chaos control and system synchronization.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2022)
Article
Engineering, Environmental
Shweta Sharma, Gaurav Sharma, Amit Kumar, Tahani Saad AlGarni, Mu Naushad, Zeid A. ALOthman, Florian J. Stadler
Summary: This study synthesized a novel polysaccharide-based hydrogel with excellent swelling properties and adsorption capacity for dyes, showing its potential as an efficient adsorbent for removing dyes from aqueous solutions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Mathematics, Applied
Sunil Kumar, Ram P. Chauhan, Mohamed S. Osman, S. A. Mohiuddine
Summary: The main aim of this work is to numerically investigate a mathematical model of the HIV/AIDS disease with awareness effect. The study extends the integer-order model to fractional order using the generalized Caputo fractional derivative. A fixed-point approach is utilized to prove the existence and uniqueness of the model. The fractional-order HIV/AIDS transmission model is then solved using a new numerical technique based on the Adams-Bashforth predictor-corrector method, and the results are illustrated through graphs.
MATHEMATICAL METHODS IN THE APPLIED SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Swati Agrawal, Subodh Kumar, Rajni Chaudhary, Anuj Chauhan, Amit Kumar, B. Sivamani
Summary: The study focused on identifying SNPs in the FCGRT gene in buffaloes and evaluating their association with IgG concentration in colostrum. The results indicated a significant link between exonic SNPs and haplotypes in the FCGRT gene and colostral IgG concentration, highlighting the potential to prevent passive transfer failure in neonatal ruminants by identifying females with desirable genetic variations.
MOLECULAR BIOLOGY REPORTS
(2022)
Article
Genetics & Heredity
Sheikh Firdous Ahmad, Akansha Singh, Snehasmita Panda, Waseem Akram Malla, Amit Kumar, Triveni Dutt
Summary: This study analyzed the genome-wide copy number variations (CNVs) in Vrindavani cattle and found CNVRs associated with different production and reproduction traits. Important genes overlapping with CNVRs were identified, and the CNVRs were also found to overlap with important QTLs affecting milk yield, composition, reproduction, and immune function traits. The study provides insights into the understanding of CNVs in Vrindavani cattle and their association with important traits.
Article
Biotechnology & Applied Microbiology
Harish K. P. Kumar, Amit Kumar, Shikha Saxena, Arnav Mehrotra, Sheikh Firdous Ahmad, Basavaraj Sajjanar, Sudhir Srivastava, Waseem Akram Malla, Anuj Chauhan, Pronab Dhar, Bishnu Prasad Mishra, Triveni Dutt, Raj Kumar Singh
Summary: This study aimed to compare the immune response between indigenous Ghurrah and exotic Landrace pigs in response to CSF virus infection. RNA-sequencing analysis showed that MDMs of Ghurrah pigs exhibited a stronger immune regulation with more significantly differentially expressed genes (DEGs) compared to Landrace pigs. The principal regulators of inflammation were differentially regulated in the two pig breeds, with upregulation in Landrace and downregulation in Ghurrah.
Article
Green & Sustainable Science & Technology
Shristi Kharola, Mangey Ram, Nupur Goyal, Sachin Kumar Mangla, O. P. Nautiyal, Anita Rawat, Yigit Kazancoglu, Durgesh Pant
Summary: This research aims to identify the barriers to organic waste management solutions from an actor's perspective and explore their causal relationships to overcome the organic waste management problem from a system perspective. By discovering and evaluating the detailed knowledge of barriers leading to organic waste, it provides structural support to managers.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Biochemistry & Molecular Biology
Sudarshan Mahala, Anju Kala, Amit Kumar
Summary: In the livestock sector, dairy animals contribute 18% of global greenhouse gas emissions in the form of methane. Reducing methane emissions is a new challenge for sustainable livestock farming. Efforts have been made to reduce emissions through nutritional and genetic interventions, but there are challenges in accurately measuring methane levels and addressing phenotypic variations.
MOLECULAR BIOLOGY REPORTS
(2022)
Review
Chemistry, Multidisciplinary
Pooja Dhiman, Dipanshi Goyal, Garima Rana, Amit Kumar, Gaurav Sharma, Linxin, Gagan Kumar
Summary: New single-atom catalysts, particularly single-atom carbon-based nano-photocatalysts, show promise for environmental remediation due to their ultra-high efficiency, environmental compatibility, structural/chemical stability, and effective usage of active metal centres. These catalysts have sparked interest among researchers for their outstanding structure and features, such as enormous activity, selectivity, maximal atom usage, and improved intrinsic catalytic activity. Carbon and carbon-based nanomaterials provide an excellent substrate for stabilizing single-atom catalysts, thanks to their low-cost production, excellent conductivity, high surface area, functionality, and tunable properties. However, there is limited work on utilizing carbon supported single-atom catalysts for the high-performance removal/degradation of a broad range of noxious organic and inorganic contaminants from water.
JOURNAL OF NANOSTRUCTURE IN CHEMISTRY
(2022)
Article
Computer Science, Theory & Methods
Anupam Gupta, Amit Kumar, Debmalya Panigrahi
Summary: This article considers two generalizations of the classical weighted paging problem that incorporate the notion of delayed service of page requests. The authors propose O(log k log n)-competitive algorithms for the PageTW and PageD problems, significantly improving on previous bounds. They also study the offline variants of these problems and provide approximation algorithms and APX-hardness proofs.
SIAM JOURNAL ON COMPUTING
(2022)
Article
Mathematics, Applied
Sara S. Alzaid, Pawan Kumar Shaw, Sunil Kumar
Summary: This paper investigates the initial value problem of fractional differential equations and proposes two numerical schemes. Through comparative analysis, it is found that fractional differential equations are more effective in modeling, and the convergence and accuracy of the proposed schemes are proven.
Article
Computer Science, Artificial Intelligence
Joshua James Engelsma, Debayan Deb, Kai Cao, Anjoo Bhatnagar, Prem Sewak Sudhish, Anil K. Jain
Summary: In many developing countries, infants suffer and die from preventable diseases and malnutrition due to the lack of official identification documentation. Infant-Prints is proposed as a low-cost fingerprint recognition system for infants, which can accurately track their vaccination and nutritional supplement status, potentially preventing unnecessary suffering and premature death.
IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE
(2022)
Article
Thermodynamics
Yong Cheng, Fukai Song, Lei Fu, Saishuai Dai, Zhiming Yuan, Atilla Incecik
Summary: This paper investigates the accessibility of wave energy absorption by a dual-pontoon floating breakwater integrated with hybrid-type wave energy converters (WECs) and proposes a hydraulic-pneumatic complementary energy extraction method. The performance of the system is validated through experiments and comparative analysis.
Article
Thermodynamics
Jing Gao, Chao Wang, Zhanwu Wang, Jin Lin, Runkai Zhang, Xin Wu, Guangyin Xu, Zhenfeng Wang
Summary: This study aims to establish a new integrated method for biomass cogeneration project site selection, with a focus on the application of the model in Henan Province. By integrating Geographic Information System and Multiple Criterion Decision Making methods, the study conducts site selection in two stages, providing a theoretical reference for the construction of biomass cogeneration projects.
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The current study presents a hybrid small modular nuclear reactor and solar-based system for sustainable communities, integrating floating and bifacial photovoltaic arrays with a small modular reactor. The system efficiently generates power, hydrogen, ammonia, freshwater, and heat for residential, agricultural, and aquaculture facilities. Thermodynamic analysis shows high energy and exergy efficiencies, as well as large-scale ammonia production meeting the needs of metropolitan areas. The hybridization of nuclear and solar technologies offers advantages of reliability, environmental friendliness, and cost efficiency compared to renewable-alone and fossil-based systems.
Editorial Material
Thermodynamics
Wojciech Stanek, Wojciech Adamczyk
Article
Thermodynamics
Desheng Xu, Yanfeng Li, Tianmei Du, Hua Zhong, Youbo Huang, Lei Li, Xiangling Duanmu
Summary: This study investigates the optimization of hybrid mechanical-natural ventilation for smoke control in complex metro stations. The results show that atrium fires are more significantly impacted by outdoor temperature variations compared to concourse/platform fires. The gathered high-temperature smoke inside the atrium can reach up to 900 K under a 5 MW train fire energy release. The findings provide crucial engineering insights into integrating weather data and adaptable ventilation protocols for smoke prevention/mitigation.
Article
Thermodynamics
Da Guo, Heping Xie, Mingzhong Gao, Jianan Li, Zhiqiang He, Ling Chen, Cong Li, Le Zhao, Dingming Wang, Yiwei Zhang, Xin Fang, Guikang Liu, Zhongya Zhou, Lin Dai
Summary: This study proposes a new in-situ pressure-preserved coring tool and elaborates its pressure-preserving mechanism. The experimental and field test results demonstrate that this tool has a high pressure-preservation capability and can maintain a stable pressure in deep wells. This study provides a theoretical framework and design standards for the development of similar technologies.
Article
Thermodynamics
Aolin Lai, Qunwei Wang
Summary: This study assesses the impact of China's de-capacity policy on renewable energy development efficiency (REDE) using the Global-MSBM model and the difference-in-differences method. The findings indicate that the policy significantly enhances REDE, promoting technological advancements and marketization. Moreover, regions with stricter environmental regulations experience a higher impact.
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Thermodynamics
Zhang Ruan, Lianzhong Huang, Kai Wang, Ranqi Ma, Zhongyi Wang, Rui Zhang, Haoyang Zhao, Cong Wang
Summary: This paper proposes a grey box model for fuel consumption prediction of wing-diesel hybrid vessels based on feature construction. By using both parallel and series grey box modeling methods and six machine learning algorithms, twelve combinations of prediction models are established. A feature construction method based on the aerodynamic performance of the wing and the energy relationship of the hybrid system is introduced. The best combination is obtained by considering the root mean square error, and it shows improved accuracy compared to the white box model. The proposed grey box model can accurately predict the daily fuel consumption of wing-diesel hybrid vessels, contributing to operational optimization and the greenization and decarbonization of the shipping industry.
Article
Thermodynamics
Huayi Chang, Nico Heerink, Junbiao Zhang, Ke He
Summary: This study examines the interaction between off-farm employment decisions between couples and household clean energy consumption in rural China, and finds that two-paycheck households are more likely to consume clean energy. The off-farm employment of women is a key factor driving household clean energy consumption to a higher level, with wage-employed wives having a stronger influence on these decisions than self-employed ones.
Article
Thermodynamics
Hanguan Wen, Xiufeng Liu, Ming Yang, Bo Lei, Xu Cheng, Zhe Chen
Summary: Demand-side management is crucial to smart energy systems. This paper proposes a data-driven approach to understand the relationship between energy consumption patterns and household characteristics for better DSM services. The proposed method uses a clustering algorithm to generate optimal customer groups for DSM and a deep learning model for training. The model can predict the possibility of DSM membership for a given household. The results demonstrate the usefulness of weekly energy consumption data and household socio-demographic information for distinguishing consumer groups and the potential for targeted DSM strategies.
Article
Thermodynamics
Xinglan Hou, Xiuping Zhong, Shuaishuai Nie, Yafei Wang, Guigang Tu, Yingrui Ma, Kunyan Liu, Chen Chen
Summary: This study explores the feasibility of utilizing a multi-level horizontal branch well heat recovery system in the Qiabuqia geothermal field. The research systematically investigates the effects of various engineering parameters on production temperature, establishes mathematical models to describe their relationships, and evaluates the economic viability of the system. The findings demonstrate the significant economic feasibility of the multi-level branch well system.
Article
Thermodynamics
Longxin Zhang, Songtao Wang, Site Hu
Summary: This investigation reveals the influence of tip leakage flow on the modern transonic rotor and finds that the increase of tip clearance size leads to a decline in rotor performance. However, an optimal tip clearance size can extend the rotor's stall margin.
Article
Thermodynamics
Kristian Gjoka, Behzad Rismanchi, Robert H. Crawford
Summary: This paper proposes a framework for assessing the performance of 5GDHC systems and demonstrates it through a case study in a university campus in Melbourne, Australia. The results show that 5GDHC systems are a cost-effective and environmentally viable solution in mild climates, and their successful implementation in Australia can create new market opportunities and potential adoption in other countries with similar climatic conditions.
Article
Thermodynamics
Jianwei Li, Guotai Wang, Panpan Yang, Yongshuang Wen, Leian Zhang, Rujun Song, Chengwei Hou
Summary: This study proposes an orientation-adaptive electromagnetic energy harvester by introducing a rotatable bluff body, which allows for self-regulation to cater for changing wind flow direction. Experimental results show that the output power of the energy harvester can be greatly enhanced with increased rotatory inertia of the rotating bluff body, providing a promising solution for harnessing wind-induced vibration energy.
