Review
Green & Sustainable Science & Technology
Karna Dahal, Selma Brynolf, Carlos Xisto, Julia Hansson, Maria Grahn, Tomas Gronstedt, Mariliis Lehtveer
Summary: Substitution of conventional jet fuel with low-to zero-carbon-emitting alternative aviation fuels is crucial for meeting climate targets in aviation. This study reviews alternative fuels and propulsion systems, focusing on costs and technical maturity, and presents conceptual aircraft designs for different aviation fuels. The overall cost is a key factor for future implementation, with renewable aviation fuels showing higher DOC than conventional jet fuels, and bio-jet fuels offering the lowest MJFSP among alternative options.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Energy & Fuels
M. Millinger, L. Reichenberg, F. Hedenus, G. Berndes, E. Zeyen, T. Brown
Summary: Options for reducing emissions in the transport sector, especially the hard-to-electrify parts, are essential to meet ambitious emissions targets. While biofuels are currently the only renewable fuels available at scale, their high costs, lack of scalability, and competition for resources pose significant challenges. Policymakers may need to explore alternative options such as electrofuels and carbon dioxide removal to offset fossil fuel emissions.
Article
Green & Sustainable Science & Technology
Francielle Carvalho, Eduardo Muller-Casseres, Matheus Poggio, Tainan Nogueira, Clarissa Fonte, Huang Ken Wei, Joana Portugal-Pereira, Pedro R. R. Rochedo, Alexandre Szklo, Roberto Schaeffer
Summary: The study evaluates 14 fuel options, finding that Fischer-Tropsch diesel, alcohol-based diesel, vegetable oils, and e-diesel are promising mid-term alternatives, while Bio-LNG is hampered by the risk of methane slip. Green hydrogen and green ammonia may not be competitive alternatives for Brazil in the mid-term but could become alternatives for cabotage transport in the long term.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Pimchanok Su-ungkavatin, Ligia Tiruta-Barna, Lorie Hamelin
Summary: A comprehensive framework is proposed for Life Cycle Assessment (LCA) in the field of commercial aviation, which ensures transparency and comparability when evaluating the environmental performances of emerging aviation systems. The framework uses projected global revenue passenger kilometer (RPK) as the functional unit and provides a methodology for comparing liquid fuels and electric aviation. It also includes specific system boundaries and key activities for each of the studied sustainable aviation systems. Overall, this framework serves as a guideline for LCA practitioners addressing new energy sources for future aviation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Green & Sustainable Science & Technology
A. D. Korberg, S. Brynolf, M. Grahn, I. R. Skov
Summary: This paper analyzes the potential of renewable fuels in different propulsion systems for the maritime sector by 2030, determining the total cost of ownership for different types of ships and fuel options. The study reveals the impact of various fuels on different propulsion systems in terms of cost competitiveness.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Green & Sustainable Science & Technology
Yuzhuo Wang, Jun Jie Wu
Summary: The thermochemical conversion of biomass is of great importance in meeting global demand for sustainable transport fuels. This article reviews different conversion processes and evaluates their merits and demerits, providing examples of industrial applications. It identifies two promising avenues for future development.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Thermodynamics
Davis Rusmanis, Yan Yang, Aoife Long, Nathan Gray, Kelvin C. Martins, Sean Og O. Loideain, Richen Lin, Xihui Kang, Donal Og Cusack, James G. Carton, Rory Monaghan, Jerry D. Murphy, David M. Wall
Summary: Decarbonising hard-to-abate sectors is essential for achieving a future net-zero economy. Electrofuels, which store electricity as low carbon energy vectors, can be used in areas where electrification is challenging, enabling the decarbonisation of sectors like transportation, agriculture, and wastewater treatment. This study analyzed the production of electrofuels at an industrial site using electrolysis to generate green hydrogen. The findings underscored the importance of scaling up hydrogen production.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Economics
Katherine Emma Lonergan, Nicolas Suter, Giovanni Sansavini
Summary: Policymaking is increasingly focused on achieving an energy transition that is not only cost-effective and low carbon, but also fair and just. While energy system models have been valuable tools in achieving the first two objectives, their ability to support a just transition is still uncertain. A review of recent energy systems modelling studies suggests that there is potential for models to support a just transition, especially in terms of assessing distributional outcomes. However, many of the existing approaches in the literature are not well aligned with current energy justice goals and discourses, resulting in decreased policy relevance and suboptimal planning support. The authors propose eight actions for modellers to increase the policy relevance of their studies, including greater engagement with policy and research discourses, conducting location-specific case studies, involving public participation in the modelling process, and considering asset decommissioning.
Article
Green & Sustainable Science & Technology
Jechan Lee, Soosan Kim, Siming You, Young-Kwon Park
Summary: Anthropogenic activities and advancements in industries have resulted in increased global energy demand and fossil fuel consumption, leading to environmental problems like climate change. The use of renewable energy technologies, particularly the thermochemical processing of lignocellulosic biomass integrated with other renewable energy technologies, has gained significant interest as a climate change mitigation strategy. It is crucial to understand the various configurations of thermochemical biomass processing technologies integrated with renewable energy technologies for sustainable and effective power generation with higher environmental benefits. This systematic review provides insights into the integration of thermochemical conversion of lignocellulosic biomass with other renewable energy technologies and also discusses the challenges and future research opportunities in implementing these integrated systems.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Review
Plant Sciences
Amitap Khandelwal, Meenu Chhabra, Piet N. L. Lens
Summary: Biofuels, especially algae, hold promise as a sustainable source of renewable energy and can also produce valuable by-products. Integrating algae cultivation with bio-electrochemical systems, such as microbial fuel cells, can eliminate the need for oxygen quenching and make the overall process more sustainable.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Henning Thiesen
Summary: This study analyzes the future German power system considering sufficient inertia using a novel open-source energy system model. The results indicate that integrating system inertia constraints in energy system models has a high impact on indicators such as system costs.
APPLIED SCIENCES-BASEL
(2022)
Article
Energy & Fuels
Jussi Ikaheimo, Tomi J. Lindroos, Juha Kiviluoma
Summary: Electrofuels, including hydrogen, methane, and ammonia, can play a significant role in achieving net-zero greenhouse gas energy systems. This study analyzed multiple archetypal energy systems and found that hydrogen was a major energy vector, while renewable methane had limited importance. Electrofuel storages were essential in all systems, with the highest capacity in the northern Hemiboreal region. The absence of cavern storage increased the significance of ammonia and led to a 5.5% increase in systemic cost. The findings provide insights into storage and generation technologies for future carbon-neutral systems in different regions.
Article
Energy & Fuels
Saul Antonio Hernandez Martinez, Elda M. Melchor-Martinez, Jesus Alfredo Rodriguez Hernandez, Roberto Parra-Saldivar, Hafiz M. N. Iqbal
Summary: The sustainable generation of biofuels is gaining attention as an alternative to petrochemical-derived products. The integration of nanotechnology and biotechnology offers potential for improving energy production. By using nanobiocatalysis, reactions can be more efficient and stable, leading to higher fuel yields. Magnetic nanoparticles (MNPs) have gained attention as a versatile carrier for enzyme immobilization, with properties such as high surface area, controllable size, and easy separation. Coating MNPs with different materials can enhance properties and enable industrial applications. This article reviews the design considerations for magnetic nanobiocatalysts, including synthesis routes, surface modification, and immobilization techniques, as well as their role in enhancing biofuels production.
Review
Energy & Fuels
Ward Suijs, Sebastian Verhelst
Summary: The increasing share of variable renewable energy sources poses challenges for grid stability and supply security. Chemical storage and power-to-X technologies offer flexibility to overcome these issues. Energy system optimization models help policy makers in national energy planning by quantifying storage system needs. This study investigates the use of size-based scaling laws to predict the efficiency and power values of reciprocating engines, highlighting the need to revise performance parameters when transitioning from fossil fuels to renewables.
Review
Biochemical Research Methods
Fei Liu, Monika Heiner, David Gilbert
Summary: Integrated modelling of biological systems is crucial for obtaining a holistic understanding of their dynamics. This paper reviews popular hybrid modelling methods, discussing their significance, formation from single modelling formalisms, and simulation techniques. Future research requirements for promoting integrated modelling of biological systems are also identified.
BRIEFINGS IN BIOINFORMATICS
(2022)
Article
Energy & Fuels
Philip Swisher, Juan Pablo Murcia Leon, Juan Gea-Bermudez, Matti Koivisto, Helge Aagaard Madsen, Marie Munster
Summary: The study aims to investigate the competitiveness and impact of low wind turbines in the energy system of Northern and Central Europe, finding that investment starts when their price is 45% higher than traditional turbines. It also shows reductions in transmission investment and increased revenue from this technology, suggesting its potential commercial value in the future energy system of Northern and Central Europe, especially in wind-rich areas such as Denmark.
Article
Energy & Fuels
Yi Zheng, Shi You, Henrik W. Bindner, Marie Munster
Summary: In this paper, a comprehensive model for alkaline electrolyser is developed to describe its dynamic behavior, and the optimal dispatch of an electrolyser based on a real-world system is studied using this model. The results show that the model can effectively capture the coupling between thermal-electric dynamics and on-off performance of an electrolyser, and the flexible operation strategy can significantly increase revenues.
Article
Thermodynamics
Yi Zheng, Shi You, Ximei Li, Henrik W. Bindner, Marie Muenster
Summary: This paper introduces a grid-connected Power-to-Methanol system, which is modeled, simulated, and optimized for its daily operation by considering participation in day-ahead electricity markets. The results show that the proposed data-driven method performs well in reducing operational costs.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Review
Green & Sustainable Science & Technology
Soner Candas, Christoph Muschner, Stefanie Buchholz, Rasmus Bramstoft, Jonas van Ouwerkerk, Karlo Hainsch, Konstantin Loeffler, Stephan Guenther, Sarah Berendes, Stefanie Nguyen, Aparna Justin
Summary: Energy system modeling is commonly used for exploring policy recommendations and understanding energy transformation pathways. However, the lack of open-source availability in practice often leads to low interpretability and transparency of energy modeling system configurations. This study compares five open-source energy system modeling frameworks, highlighting methodological differences in renewable energy system modeling. Through implementing two scenarios depicting the German electricity system, the impacts of different model configurations on results are demonstrated.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Green & Sustainable Science & Technology
Jonas van Ouwerkerk, Karlo Hainsch, Soner Candas, Christoph Muschner, Stefanie Buchholz, Stephan Guenther, Hendrik Huyskens, Sarah Berendes, Konstantin Loeffler, Christian Bussar, Fateme Tardasti, Luja von Koeckritz, Rasmus Bramstoft
Summary: Recent European and German climate targets call for a faster transition towards renewable energy sources in the power sector. This study compares the performance of five Open Source power sector models and identifies differences in their results. The analysis reveals that linear programming-based models differ significantly from models with pre implemented dispatch orders. Additionally, variations in parameters and characteristics have different impacts on the models, indicating that reliance on renewable generation shares alone is not enough to achieve emission reductions. The study emphasizes the need for increased investments in renewable generation capacities, storage, and transmission to meet the new targets.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Energy & Fuels
Yi Zheng, Jiawei Wang, Shi You, Ximei Li, Henrik W. Bindner, Marie Munster
Summary: A decision-making framework based on data-driven robust chance constrained programming (DRCCP) is proposed in this paper, which effectively handles uncertainties, manages risks, and reduces operational costs for wind/hydrogen systems.
Article
Multidisciplinary Sciences
Sebastian Franz, Nicolas Campion, Sara Shapiro-Bengtsen, Rasmus Bramstoft, Dogan Keles, Marie Munster
Summary: The study finds that achieving emission reduction targets in the shipping industry requires high growth rates in green fuel availability, high carbon pricing, and significant fuel demand savings.
Article
Economics
Juan Gea-Bermudez, Rasmus Bramstoft, Matti Koivisto, Lena Kitzing, Andres Ramos
Summary: Offshore hydrogen generation may have a limited role in the future energy system, and sending offshore wind energy to shore as electricity has higher value. Forcing all hydrogen generation offshore would increase energy system costs. The economic value of future offshore hydrogen generation should not only be derived from minimizing costs, but also from the perspective of the whole integrated energy system.
Article
Green & Sustainable Science & Technology
Nicolas Campion, Hossein Nami, Philip R. Swisher, Peter Vang Hendriksen, Marie Munster
Summary: This paper develops a fast-solving open-source model for dynamic power-to-X plant techno-economic analysis and investigates the bias in using other state-of-the-art power-to-X cost calculation methods. The model optimizes investments and operation-costs based on techno-economic data, power profiles, and grid prices. The study focuses on ammonia fuel synthesized from electrolytic hydrogen produced by photovoltaics, wind turbines, or the grid. Comparisons are made using different weather profiles and electrolyser technologies. The results show that a semi-islanded set-up is the most cost-effective option, reducing costs by up to 23% compared to off-grid systems.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Energy & Fuels
Ioannis Sifnaios, Daniel Moller Sneum, Adam R. Jensen, Jianhua Fan, Rasmus Bramstoft
Summary: The study demonstrates that the use of thermal energy storage systems is crucial for achieving carbon neutrality in the energy system. Compared to other energy storage technologies, pit thermal energy storage systems have lower average heat prices and higher flexibility.
Article
Multidisciplinary Sciences
Jonathan Vincents Eriksen, Sebastian Marco Franz, Julius Steensberg, Adam Vejstrup, Mikkel Bosack, Rasmus Bramstoft, Fabian Scheller
Summary: This study assesses future demand for renewable fuels in Germany by combining technological progress and socio-economic pathways in an energy system analysis. The findings show that renewable fuel demand varies depending on electrification levels, and considering socio-economic aspects and behavioral change can significantly alter demand projections.
Review
Energy & Fuels
Pinrolinvic D. K. Manembu, Angreine Kewo, Rasmus Bramstoft, Per Sieverts Nielsen
Summary: This article provides important findings on the impact and characteristics of appliance usage on load profiles through a literature review on load-shifting at the appliance level. It emphasizes the significance of load-shifting in improving energy efficiency and contributes through the development of load-shifting optimization algorithms and other methods.
Article
Chemistry, Multidisciplinary
Sara Shapiro-Bengtsen, Lorie Hamelin, Lars Bregnbaek, Lele Zou, Marie Munster
Summary: This study assesses the large-scale scenarios for utilizing residual biomass and simulates impacts to electricity and heating systems, finding major benefits in all impact categories and identifying nitrogen leaching as posing the largest economic impact.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Energy & Fuels
Yi Zheng, Shi You, Henrik W. Bindner, Marie Munster
Summary: This paper proposes a two-stage multi-objective optimization framework to reveal optimal investment plans considering different operational strategies. The results show a trade-off between system investment and operational performance, and different operation objectives affect component capacities during the planning phase.
CSEE JOURNAL OF POWER AND ENERGY SYSTEMS
(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.
