Article
Environmental Sciences
Osman Kara
Summary: Increasing concerns about greenhouse gas emissions, climate change, and resource depletion have highlighted the importance of wind energy. This study explored the potential of wind turbines in generating electricity and analyzed their energy, exergy, and economic efficiencies. The energy efficiency of the turbines ranged from 10% to 70%, with Enercon_1500 and Enercon_3050 performing better than Enercon_3500 and Enercon_2350. The highest and lowest annual total energy productions were 12.19 GWh and 4.48 GWh, respectively. Exergy efficiencies varied from 20% to 79%, and the unit electricity cost was higher for Enercon_1500 and lower for Enercon_4200.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Thermodynamics
Ernesto Arteaga-Lopez, Cesar Angeles-Camacho
Summary: This research introduces a new wind energy evaluation approach by integrating CFD studies for optimal placement of small wind turbines, which is more cost-effective than conventional methods. By simulating multidirectional flows and characterizing wind resources as a virtual computational domain (VCD), the VCD implementation allows for more accurate simulations and improved micrositing of wind turbines compared to traditional CFD studies.
Article
Green & Sustainable Science & Technology
Pappu Arumugam, Velraj Ramalingam, Kiran Bhaganagar
Summary: Small wind turbines are gaining attention due to sustainable power generation, but face obstacles in commercialization such as low efficiency, lack of technical knowledge among manufacturers, and cost constraints. The paper reviews research on blade design and development, performance analysis, and novel concepts for enhancing efficiency in utilizing wind energy.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Energy & Fuels
Zirui Liu, Oleg Gaidai, Jiayao Sun, Yihan Xing
Summary: Green renewable energy is generated by floating offshore wind turbines (FOWT) and plays a vital role in the offshore wind energy industry. Accurately evaluating excessive weights in adverse weather conditions is a safety concern. This study proposes a Monte Carlo-based engineering technique to predict extreme statistics of loads or response processes, using commercial FAST software to calculate hydrodynamic ambient wave loads and convert them into FOWT structural loads. The innovative deconvolution technique is explained thoroughly, and the suggested approach provides clear and accurate estimates for severe response values and fatigue life.
ENERGY SCIENCE & ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Ranjit Deshmukh, Amol Phadke, Duncan S. Callaway
Summary: India aims to install over 400 GW of wind and solar electricity generation by 2030, with solar comprising the majority. Research suggests that systems where solar photovoltaic makes up only 25 to 50% of the total renewable target have the lowest carbon mitigation costs, and high renewable energy targets can reduce the need for new fossil fuel power plants. Additionally, a wind-majority high renewable energy system could potentially keep India's 2030 emissions below 2018 levels and below the social cost of carbon.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Multidisciplinary Sciences
Ranjit Deshmukh, Amol Phadke, Duncan S. Callaway
Summary: India has ambitious targets for wind and solar energy installation by 2030, with solar making up the majority of capacity. The study found that systems with solar photovoltaic comprising 25% to 50% of the total renewable target have the lowest carbon mitigation costs. Contrary to assumptions, meeting high renewable targets in India will reduce the need for new fossil fuel power plants. High renewable energy systems with a majority of wind plants could result in electricity costs similar to fossil fuel-dominated systems.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Green & Sustainable Science & Technology
Hamid Reza Karbasian, Javad Abolfazli Esfahani, Aliyu Musa Aliyu, Kyung Chun Kim
Summary: This study numerically investigates the kinematics of dynamic stall and found that the different movements of the blade with the same angle of attack can significantly affect the aerodynamic loads and dynamic stall process. The pure-pitching motion induces higher drag force on the airfoil compared to the pure-heaving motion, while the pure-heaving motion causes excessive turbulence in the boundary layer, leading to more stable coherent structures and higher lift at post-stall.
Article
Energy & Fuels
Azael Duran Castillo, Juan C. Jauregui-Correa, Francisco Herbert, Krystel K. Castillo-Villar, Jesus Alejandro Franco, Quetzalcoatl Hernandez-Escobedo, Alberto-Jesus Perea-Moreno, Alfredo Alcayde
Summary: This article presents an analysis of the performance of a flexible wind turbine blade, which includes a flexible surface and a cam mechanism to adapt the surface to different configurations. Simulation analysis was conducted to determine different aerodynamic coefficients for different deformed surfaces and wind speeds, with results suggesting a potential decrease in extreme and fatigue loads on wind turbines.
Article
Computer Science, Information Systems
Doron Greenberg, Michael Byalsky, Asher Yahalom
Summary: Israel's limited nonrenewable local energy resources have led to efforts in 'green' energy development, including installations for solar and wind energy. The traditional discounted cash flow method is not suitable for rapidly changing investment climates, leading to the adoption of real options analysis techniques. This study applies these techniques to evaluate wind energy turbines in Israel and highlights the importance of considering uncertainties in investment decisions.
Article
Green & Sustainable Science & Technology
Nasser S. Danapou, Mehrdad Tarafdar Hagh, Syed Hossein Hosseini
Summary: This paper introduces a novel concept for wind systems that aims to improve efficiency, reduce costs, and minimize environmental damage. The proposed system includes innovative designs for wind turbines and power transmission towers, as well as a new power delivery method. By creating a specific phase difference between the power transmission lines, wind turbine power can be injected into the transmission line without the need for large transformers. The proposed system is simulated using MATLAB software and compared with conventional wind farms.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
James Sherwood, Gerardo Tun Gongora, Anne P. M. Velenturf
Summary: The finite capacity of the Earth to provide the resources needed for products is now influencing policy decisions and citizen behaviors. A methodology called 'Performance-weighted abiotic Resource Depletion' (PwRD) is proposed, which normalizes and justifies resource use based on a product's function. This approach enables direct comparison of resource use among different products, similar to an absolute sustainability assessment. The PwRD metric quantifies concerns over element supply risk and suggests reasonable actions for sustaining a circular economy.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Economics
Kristine Grimsrud, Cathrine Hagem, Arne Lind, Henrik Lindhjem
Summary: This paper proposes an environmental taxation scheme that can effectively achieve spatial distribution of new wind power production, reducing social costs. The analysis shows that implementing a tax scheme can lower the environmental and social costs of wind power production in Norway, and that the environmental costs associated with turbines and power lines are crucial for effective spatial allocation.
Article
Biodiversity Conservation
Christopher J. W. McClure, Brian W. Rolek, Leah Dunn, Jennifer D. McCabe, Luke Martinson, Todd Katzner
Summary: The study found that automated curtailment systems can effectively reduce eagle fatalities caused by wind turbines and potentially lessen the conflict between wind energy and raptor conservation. However, automated curtailment did not completely eliminate fatalities, and its efficacy could be improved by combining it with other mitigation actions.
JOURNAL OF APPLIED ECOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Humphrey Adun, Hamagham Peter Ishaku, Ayomide Titus Ogungbemi
Summary: Despite their potential in fossil fuel, the MENA region is affected by weakness in oil prices which has negatively impacted their finances. Additionally, water scarcity and political crisis pose immense challenges in the energy situation. Implementing renewable energy targets requires different policy strategies.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Chemical
Burcin Deda Altan, Afsin Gungor
Summary: This study investigates the performance of the Savonius wind turbine in a dual turbine design with opposing rotations. It is found that placing a triangular plate in front of the turbines improves performance, resulting in a 30% increase in the maximum power coefficient compared to the conventional design.
Article
Engineering, Mechanical
Guido Wager, Jonathan Whale, Thomas Braunl
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING
(2018)
Article
Green & Sustainable Science & Technology
Selina Lyons, Jonathan Whale, Justin Wood
Article
Green & Sustainable Science & Technology
Julius Tanesab, David Parlevliet, Jonathan Whale, Tania Urmee
Review
Green & Sustainable Science & Technology
K. C. Anup, Jonathan Whale, Tania Urmee
Article
Energy & Fuels
Bryn Durrans, Jonathan Whale, Martina Calais
Article
Green & Sustainable Science & Technology
K. C. Anup, Jonathan Whale, Samuel P. Evans, Philip D. Clausen
Article
Green & Sustainable Science & Technology
Ashley Vidinopoulos, Jonathan Whale, Ursula Fuentes Hutfilter
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2020)
Article
Chemistry, Multidisciplinary
Pratigya Sharma, Manickam Minakshi, Jonathan Whale, Annelise Jean-Fulcrand, Georg Garnweitner
Summary: Nickel-based bimetallic oxides, such as NiMoO4 and NiWO4, were synthesized and characterized for their electrochemical properties in pseudo-capacitors. NiMoO4 exhibited superior charge storage performance and better capacity retention after 1000 cycles compared to NiWO4, which was attributed to the reversible redox behavior of NiMoO4 and the formation of a passivation layer composed of WO3 on the electrode in the case of NiWO4.
Article
Green & Sustainable Science & Technology
K. C. Anup, Jonathan Whale, Joachim Peinke
Summary: This study analyzed wind conditions at two contrasting locations, finding that turbines in built environment sites have higher intermittency of turbulence and increased likelihood of extreme events. The turbines operating in sites with complex terrain need to be structurally robust and have better control systems.
Article
Green & Sustainable Science & Technology
Ingrid Neunaber, Michael Hoelling, Jonathan Whale, Joachim Peinke
Summary: An experimental wind tunnel study compared the turbulence in the wakes of a static actuator disc and a model wind turbine, finding that both models have similar properties in the far wake, with turbulence in the central wake being independent of the inflow conditions. Both models filter larger scale intermittency in the far wake, and the turbine generates its own turbulence with strong features of homogeneous, isotropic turbulence.
Review
Engineering, Environmental
Su Mei Woo, Jonathan Whale
Summary: Renewable energy generation and increased electrification are crucial for reducing greenhouse gas emissions and addressing climate change. The global deployment of wind turbines is increasing rapidly, but the management of their end-of-life waste poses challenges. The research found that wind turbine EoL management is dynamic and complex, requiring consideration of multiple factors.
WASTE MANAGEMENT & RESEARCH
(2022)
Article
Energy & Fuels
Amir Bashirzadeh Tabrizi, Binxin Wu, Jonathan Whale, Maryam Shahabi Lotfabadi
Article
Green & Sustainable Science & Technology
Julius Tanesab, David Parlevliet, Jonathan Whale, Tania Urmee
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2019)
Article
Transportation Science & Technology
Guido Wager, Jonathan Whale, Thomas Braunl
INTERNATIONAL JOURNAL OF ELECTRIC AND HYBRID VEHICLES
(2018)
Proceedings Paper
Engineering, Aerospace
A. Kc, J. Whale, T. Urmee, J. Peinke, M. Waechter
SCIENCE OF MAKING TORQUE FROM WIND (TORQUE 2018)
(2018)
Article
Green & Sustainable Science & Technology
Cameron Bracken, Nathalie Voisin, Casey D. Burleyson, Allison M. Campbell, Z. Jason Hou, Daniel Broman
Summary: This study presents a methodology and dataset for examining compound wind and solar energy droughts, as well as the first standardized benchmark of energy droughts across the Continental United States (CONUS) for a 2020 infrastructure. The results show that compound wind and solar droughts have distinct spatial and temporal patterns across the CONUS, and the characteristics of energy droughts are regional. The study also finds that compound high load events occur more often during compound wind and solar droughts than expected.
Article
Green & Sustainable Science & Technology
Ning Zhang, Yanghao Yu, Jiawei Wu, Ershun Du, Shuming Zhang, Jinyu Xiao
Summary: This paper provides insights into the optimal configuration of CSP plants with different penetrations of wind power by proposing an unconstrained optimization model. The results suggest that large solar multiples and TES are preferred in order to maximize profit, especially when combined with high penetrations of wind and photovoltaic plants. Additionally, the study demonstrates the economy and feasibility of installing electric heaters (EH) in CSP plants, which show a linear correlation with the penetration of variable energy resources.
Article
Green & Sustainable Science & Technology
M. Szubel, K. Papis-Fraczek, S. Podlasek
Article
Green & Sustainable Science & Technology
J. Silva, J. C. Goncalves, C. Rocha, J. Vilaca, L. M. Madeira
Summary: This study investigated the methanation of CO2 in biogas and compared two different methanation reactors. The results showed that the cooled reactor without CO2 separation achieved a CO2 conversion rate of 91.8%, while the adiabatic reactors achieved conversion rates of 59.6% and 67.2%, resulting in an overall conversion rate of 93.0%. Economic analysis revealed negative net present worth values, indicating the need for government monetary incentives.
Article
Green & Sustainable Science & Technology
Yang Liu, Yonglan Xi, Xiaomei Ye, Yingpeng Zhang, Chengcheng Wang, Zhaoyan Jia, Chunhui Cao, Ting Han, Jing Du, Xiangping Kong, Zhongbing Chen
Summary: This study investigated the effect of using nanofiber membrane composites containing Prussian blue-like compound nanoparticles (PNPs) to relieve ammonia nitrogen inhibition of rural organic household waste during high-solid anaerobic digestion and increase methane production. The results showed that adding NMCs with 15% PNPs can lower the concentrations of volatile fatty acids and ammonia nitrogen, and increase methane yield.
Article
Green & Sustainable Science & Technology
Zhong Ge, Xiaodong Wang, Jian Li, Jian Xu, Jianbin Xie, Zhiyong Xie, Ruiqu Ma
Summary: This study evaluates the thermodynamic, exergy, and economic performance of a double-stage organic flash cycle (DOFC) using ten eco-friendly hydrofluoroolefins. The influences of key parameters on performance are analyzed, and the advantages of DOFC over single-stage type are quantified.
Article
Green & Sustainable Science & Technology
Nicolas Kirchner-Bossi, Fernando Porte-Agel
Summary: This study investigates the optimization of power density in wind farms and its sensitivity to the available area size. A novel genetic algorithm (PDGA) is introduced to optimize power density and turbine layout. The results show that the PDGA-driven solutions significantly reduce the levelized cost of energy (LCOE) compared to the default layout, and exhibit a convex relationship between area and LCOE or power density.
Article
Green & Sustainable Science & Technology
Chunxiao Zhang, Dongdong Li, Lin Wang, Qingpo Yang, Yutao Guo, Wei Zhang, Chao Shen, Jihong Pu
Summary: In this study, a novel reversible liquid-filled energy-saving window that effectively regulates indoor solar radiation heat gain is proposed. Experimental results show that this window can effectively reduce indoor temperature during both summer and winter seasons, while having minimal impact on indoor illuminance.
Article
Green & Sustainable Science & Technology
Alessandro L. Aguiar, Martinho Marta-Almeida, Mauro Cirano, Janini Pereira, Leticia Cotrim da Cunha
Summary: This study analyzed the Brazilian Equatorial Shelf using a high-resolution ocean model and found significant tidal variations in the area. Several hypothetical barrages were proposed with higher annual power generation than existing barrages. The study also evaluated the installation effort of these barrages.
Article
Green & Sustainable Science & Technology
Francesco Superchi, Nathan Giovannini, Antonis Moustakis, George Pechlivanoglou, Alessandro Bianchini
Summary: This study focuses on the optimization of a hybrid power station on the Tilos island in Greece, aiming to increase energy export and revenue by optimizing energy fluxes. Different scenarios are proposed to examine the impact of different agreements with the grid operator on the optimal solution.
Article
Green & Sustainable Science & Technology
Peimaneh Shirazi, Amirmohammad Behzadi, Pouria Ahmadi, Sasan Sadrizadeh
Summary: This research presents two novel energy production/storage/usage systems to reduce energy consumption and environmental effects in buildings. A biomass-fired model and a solar-driven system integrated with photovoltaic thermal (PVT) panels and a heat pump were designed and assessed. The results indicate that the solar-based system has an acceptable energy cost and the PVT-based system with a heat pump is environmentally superior. The biomass-fired system shows excellent efficiency.
Article
Green & Sustainable Science & Technology
Zihao Qi, Yingling Cai, Yunxiang Cui
Summary: This study aims to investigate the operational characteristics of the solar-ground source heat pump system (SGSHPS) in Shanghai under different operation modes. It concludes that tandem operation mode 1 is the optimal mode for winter operation in terms of energy efficiency.
Article
Green & Sustainable Science & Technology
L. Bartolucci, S. Cordiner, A. Di Carlo, A. Gallifuoco, P. Mele, V. Mulone
Summary: Spent coffee grounds are a valuable biogenic waste that can be used as a source of biofuels and valuable chemicals through pyrolysis and solvent extraction processes. The study found that heavy organic bio-oil derived from coffee grounds can be used as a carbon-rich biofuel, while solvent extraction can extract xantines and p-benzoquinone, which are important chemicals for various industries. The results highlight the promising potential of solvent extraction in improving the economic viability of coffee grounds pyrolysis-based biorefineries.
Article
Green & Sustainable Science & Technology
Luiza de Queiroz Correa, Diego Bagnis, Pedro Rabelo Melo Franco, Esly Ferreira da Costa Junior, Andrea Oliveira Souza da Costa
Summary: Building-integrated photovoltaics, especially organic solar technology, are important for reducing greenhouse gas emissions in the building sector. This study analyzed the performance of organic panels laminated in glass in a vertical installation in Latin America. Results showed that glass lamination and vertical orientation preserved the panels' performance and led to higher energy generation in winter.
Article
Green & Sustainable Science & Technology
Zhipei Hu, Shuo Jiang, Zhigao Sun, Jun Li
Summary: This study proposes innovative fin arrangements to enhance the thermal performance of latent heat storage units. Through optimization of fin distribution and prediction of transient melting behaviors, it is found that fin structures significantly influence heat transfer characteristics and melting behaviors.