Article
Chemistry, Physical
Srijit Basu, Alfred John, Akshay, Anil Kumar
Summary: The study compares Solar-Hydrogen, Wind-Hydrogen, and Solar Wind-Hydrogen hybrid systems, concluding that the hybrid system has the most economical levelized cost of energy, suitable for addressing fluctuating output power issues, with higher costs for Solar Photovoltaics and Wind systems.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Y. Kebbati, L. Baghli
Summary: This paper presents a contribution to diversify the energy mix in Algeria by designing and modeling a large-scale hybrid photovoltaic-wind system. An innovative control approach using optimized controllers is proposed to maximize power generation from wind and solar energy resources.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Wei Jiang, Zhipeng Ju, Hangchen Tian, Yang Liu, Muslum Arici, Xiaoying Tang, Qing Li, Dong Li, Hanbing Qi
Summary: This study investigates the retrofitting of existing rural houses into net-zero energy consumption houses in severe cold areas of China. The combination of passive energy-saving retrofit and building attached/applied photovoltaic technique is used. The results show that the optimal case includes an envelope with low U-value and a grid-connected PV system on the roof, with a cost of 22826.84 CNY and a payback period of 5.1 years. This study provides valuable insights for the development of clean construction and zero-carbon operation for rural houses.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Fabio Rinaldi, Farzad Moghaddampoor, Behzad Najafi, Renzo Marchesi
Summary: The study focuses on the techno-economic analysis of hybrid energy systems for off-grid electrification in rural Peru, finding that the hybrid solar-wind-diesel system is the most economically viable and environmentally friendly option. Optimal configurations are determined for different communities based on meteorological data and load characteristics, leading to a reduction in CO(2) emissions. The results can serve as a guideline for designing electrification systems in similar villages to minimize costs and reduce environmental impact.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2021)
Article
Energy & Fuels
Edwin Sheeba Percis, Anandan Nalini, Thanga Nadar Jenish, Joseph Jayarajan, Subramanian Bhuvaneswari, Sankarapuram Thangamuthu Rama
Summary: The advancement in energy exploitation has led to increased demand for alternative generation methods and efficient utilitization systems. This article focuses on developing a self-sustained hybrid microgrid incorporating solar power system and electric vehicle to absorb power variations and enhance system performance in a drought-prone area like Ramanathapuram, India. The use of real field data from the National Institute of Wind Energy demonstrates the variability in temperature and irradiance to promote sustainable development in dry lands and provide a permanent solution for existing power crises.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Computer Science, Information Systems
N. Chinna Alluraiah, P. Vijayapriya
Summary: Recently, a hybrid microgrid system has become crucial in supplying sustainable power to remote areas through renewable energy sources. The research aims to design an optimal system by identifying power production potentials at selected locatios. The proposed design offers sustainable power to meet the varying load demands of different communities in Doddipalli village, India. The system integration includes a hydrogen tank and loads for hydrogen production and energy management strategies. The optimal system was determined through an optimization process, techno-economic, and environmental analysis using HOMER software. The proposed system, consisting of solar PV, wind turbine, and the grid, was found to have the lowest levelized cost of energy, minimum net present cost, and high renewable energy fraction. The analysis shows that the proposed hybrid system is an appropriate model for providing reliable and cost-effective power in the considered area.
Article
Engineering, Electrical & Electronic
Maurilio Matracia, Mustafa A. Kishk, Mohamed-Slim Alouini
Summary: Despite the importance of global connectivity for future wireless networks, telecom providers face economic challenges when investing in rural and remote areas. The use of wind-turbine-mounted base stations may offer a cost-effective solution to enhance cellular infrastructure in regions with high wind energy potential, bridging the digital divide between urban and rural areas.
IEEE COMMUNICATIONS MAGAZINE
(2021)
Article
Green & Sustainable Science & Technology
Jawed Mustafa, Fahad Awjah Almehmadi, Saeed Alqaed, Mohsen Sharifpur
Summary: This study proposes a decentralized hybrid energy system using solar photovoltaics and wind turbines to provide sustainable energy for a community in Saudi Arabia. A dynamic model and HOMER software were used to optimize the system, and artificial neural network successfully estimated renewable energy generation. The results show low energy costs, high renewable energy penetration, and significant greenhouse gas reduction.
Article
Computer Science, Interdisciplinary Applications
Hassan Abouobaida, Lais de Oliveira-Assis, Emanuel P. P. Soares-Ramos, Hassane Mahmoudi, Josep M. Guerrero, Mohsin Jamil
Summary: In this paper, a method of energy management shared with storage devices in a standalone DC microgrid is proposed. The management aims to satisfy energy demand while ensuring good regulation and stability of DC bus voltage. The method takes into account losses in static converters by calculating the effective power available on the common DC bus. The control strategy combines fuzzy logic control for extracting maximum power from photovoltaic and wind sources, and sliding mode control for controlling storage power converters. The simulation results demonstrate the validity of the proposed energy management and control strategy.
SIMULATION MODELLING PRACTICE AND THEORY
(2023)
Article
Green & Sustainable Science & Technology
Yumi Kobayashi, Titta Kotilainen, Gema Carmona-Garcia, Adrian Leip, Hanna L. Tuomisto
Summary: Indoor vertical farming can be an important solution for future food insecurity by reducing land use and being unaffected by environmental conditions. However, its energy-intensive operation raises environmental concerns. This study examines the feasibility of operating indoor vertical farming with renewable energy by assessing land use requirements and renewable energy generation potential. The results show that with current technologies, the saved land area is only sufficient for energy production in lettuce farming using solar energy. However, with improved technologies, the saved land area can generate electricity with solar energy for all crops except tomatoes in Sweden. Wind energy only satisfies lettuce production even with future technologies. This study provides valuable insights for determining the feasibility of operating indoor vertical farming with renewable energy in different regions of Europe.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Vineet Tirth, Ali Algahtani, Abdulaziz H. Alghtani, Tawfiq Al-Mughanam, Kashif Irshad
Summary: As concern about global warming and the depletion of fossil fuel supplies grows, the world is looking for sustainable energy alternatives to protect the earth for future generations. The most promising option is renewable energy sources, particularly hydropower, which can meet our energy needs and preserve the environment. The effectiveness of solar panels can be enhanced using nanotechnology and nanomaterials, resulting in increased electricity production and longer lifespan.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Thermodynamics
Qazi Shahzad Ali, Man-Hoe Kim
Summary: The study focuses on the aerodynamic design of an airborne wind turbine, utilizing numerical methods such as BEM and RANS-CFD. 3D simulations are conducted to investigate the design and off-design behavior of the rotor. The study also confirms a 21.3% power gain with the rotor equipped with diffuser geometry.
Article
Energy & Fuels
Piotr Kulyk, Mariola Michalowska, Pawel Szudra
Summary: This paper presents the important directions and conditions of contemporary changes in the solar energy market in the Visegrad Group countries. It highlights the significance of economic conditions, subsidies, and the development of renewable energy sources for the development of solar energy.
Article
Energy & Fuels
Meisam Mahdavi, Francisco Jurado, Ricardo Alan Verdu Ramos, Augustine Awaafo
Summary: The high dependence on imported fossil fuels and the need to reduce greenhouse gas emissions have driven Morocco to focus on renewable energy sources such as hydro, wind, and solar. However, in recent years, wind and solar energy usage has outpaced hydropower due to water level reductions caused by rainfall drop, global warming, and droughts. Morocco has great potential for solar and wind energy generation due to its sunny days, vast desert areas, long coastlines, and suitable wind conditions. However, integrating wind and solar units into the power grid has challenges due to variations in wind speed, solar irradiation uncertainty, and expensive energy storage systems. Biomass power generation can compensate for the decrease in wind and solar energy during cloudy or non-windy periods. Therefore, this study evaluates the hybrid utilization of biomass, wind, and solar energy in a Moroccan village and rural area, finding it to be a more appropriate approach compared to individual operation of wind turbines or other combinations of renewable energy sources.
Article
Engineering, Electrical & Electronic
Harish Kumar Pujari, Mageshvaran Rudramoorthy
Summary: This study conducted an economic analysis on six different hybrid renewable energy systems in a village in India using HOMER software, finding that one of the systems was optimized in terms of net present cost, levelized cost of energy, renewable fraction, and unmet electric loads.
INTERNATIONAL TRANSACTIONS ON ELECTRICAL ENERGY SYSTEMS
(2021)
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.