Article
Green & Sustainable Science & Technology
T. Chamarande, S. Mathy, B. Hingray
Summary: Autonomous micro-grids based on solar photovoltaic (PV) are a promising solution for electricity access in many regions. This study examines the sensitivity of optimal sizing to variations and uncertainties of technical and economic parameters. The results show that the optimal configuration depends on resource characteristics and can be determined based on simple pre-sizing rules.
ENERGY FOR SUSTAINABLE DEVELOPMENT
(2022)
Article
Green & Sustainable Science & Technology
Nasser Yimen, Louis Monkam, Denis Tcheukam-Toko, Bashir Musa, Roger Abang, Lawrence Fon Fombe, Serkan Abbasoglu, Mustafa Dagbasi
Summary: The study utilized HOMER software to model, simulate, and optimize photovoltaic/wind/battery systems integrated with different biomass power technologies to meet the electricity needs of a remote community in northern Cameroon. The results indicated that integrating anaerobic digester and gasifier generators into the system can reduce the overall system cost and decrease the cost of electricity per kilowatt-hour.
IET RENEWABLE POWER GENERATION
(2022)
Article
Energy & Fuels
V. Buenfil Roman, G. A. Espadas Banos, C. A. Quej Solisa, M. I. Flota-Banuelos, M. Rivero, M. A. Escalante Soberanis
Summary: The main objective of this study is to analyze the feasibility of implementing a HRES based on photovoltaic technology in rural areas, and to present a reliable and adaptable methodology. The analysis of three different power systems showed that the photovoltaic/diesel-generator/AGM battery hybrid power system was the least expensive and most feasible option. This study demonstrates the economic and technical feasibility of satisfying the electrical demand of rural communities at a reasonable and accessible cost.
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
Green & Sustainable Science & Technology
Ahmed Bilal Awan, Muhammad Zubair, Zulfiqar Ali Memon, Nabil Ghalleb, Iskander Tlili
Summary: This paper provides a detailed comparative analysis of two solar technologies, photovoltaic (PV) and dish Stirling engine (DSE), showing that the PV system has higher capacity factor and energy output, as well as better levelized electricity cost and net present value compared to the DSE system.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Chemistry, Physical
Reuben Joseph Soja, Muhammad Bello Gusau, Usman Ismaila, Nuraddeen Nasiru Garba
Summary: This study aims to estimate the cost of nuclear hydrogen production and compare the results with similar studies using the HEEP program. Six existing light water reactors were used to evaluate the levelized cost of nuclear hydrogen production, and the results showed that different reactor technologies and production methods impact the final price of hydrogen.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Green & Sustainable Science & Technology
P. Pandiyan, R. Sitharthan, S. Saravanan, Natarajan Prabaharan, M. Ramji Tiwari, T. Chinnadurai, T. Yuvaraj, K. R. Devabalaji
Summary: This paper provides a comprehensive review on the enhanced hybrid electrification in rural areas using renewable energy sources such as hydro, wind, biogas, and biomass. It highlights the sustainable and reliable operation of hybrid renewable power generation systems, as well as factors influencing the selection of a particular hybrid energy system and the energy management strategy. The outcomes of this study can be utilized by researchers and stakeholders for rural electricity pricing and policymaking.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Energy & Fuels
Sweta Singh, Adam Slowik, Neeraj Kanwar, Nand K. Meena
Summary: This study investigates a techno-economic solution for rural electrification, designing a grid-connected microgrid system with solar photovoltaic and battery energy storage, optimized using the MFABC+ algorithm. Results show that the proposed system can meet the village's 24/7 electricity demand at the lowest levelized cost of electricity.
Article
Green & Sustainable Science & Technology
K. Y. Lau, C. W. Tan
Summary: The study compares the feasibility of using non-renewable, standalone renewable, and hybrid renewable systems to power a remote community in Malaysian Borneo. It shows that both PV and hydrokinetic systems can be used effectively, with the hybrid PV/diesel system having the lowest net present cost among all analyzed types.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2021)
Article
Energy & Fuels
Hani Al-Rawashdeh, Omar Ali Al-Khashman, Laith M. Arrfou, Mohamed R. Gomaa, Hegazy Rezk, Mohammad Shalby, Jehad T. Al Bdour, Mohamed Louzazni
Summary: This paper designs a new hybrid renewable energy system (HRES) using solar photovoltaics (PVs), batteries, an inverter, and a 100 kW diesel generator (DG) to power the irrigation of a remote farm in Al-Jafr, Jordan. The results show significant reductions in energy cost and carbon emissions compared to the DG-only system. It is concluded that HRES successfully reduces energy cost, fuel consumption, emissions, and overall cost for remote areas.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Energy & Fuels
Nurul Hiron, Nundang Busaeri, Sutisna Sutisna, Nurmela Nurmela, Aceng Sambas
Summary: The main issue with electricity supply on densely populated islands is the need for reliable, low-carbon, and sustainable electricity. This study examines the integration of PV systems and diesel power systems on Karimunjawa Island to address these needs from economic, ecological, and technological perspectives, ultimately determining the availability of irradiation to meet the island's electricity demands.
Article
Green & Sustainable Science & Technology
Auroshis Rout, Brijesh Mainali, Suneet Singh, Chetan Singh Solanki, Govind S. Bhati
Summary: India has achieved universal electricity access, but the financial sustainability of supplying electricity in rural areas remains a key concern due to significant annual losses. A study suggests that tariff revision, loss reduction, and load factor improvement could help reduce the financial gap and improve sustainability.
SUSTAINABLE PRODUCTION AND CONSUMPTION
(2021)
Article
Thermodynamics
Aki Pesola
Summary: This paper presents a new optimization approach for hybrid heating systems that combine centralized district heating assets and decentralized heat pumps. A modeling tool was developed to assess the impact of adding heat pumps to the existing district heating system. The results show that optimal use of heating assets can significantly reduce operating expenditure. To fully realize the benefits, heat pumps should be utilized to provide ancillary services and receive compensation for feeding heat into the district heating network. Sensitivity analysis was conducted to evaluate the robustness of the modeling results.
Article
Energy & Fuels
Loiy Al-Ghussain, Muhammed A. Hassan, Ahmed Hamed
Summary: Compact installation of solar photovoltaic systems is necessary in urban regions with limited available solar irradiance. This study evaluates three installation schemes of dual-row near-wall ground-mounted PV systems. Mathematical models are developed to optimize the techno-economic performance based on tilt angles and reflector parameters. The results show favorability of the proposed schemes in terms of energy production and cost compared to the baseline configuration.
Article
Energy & Fuels
Zulkifli Othman, Shahril Irwan Sulaiman, Ismail Musirin, Ahmad Maliki Omar, Sulaiman Shaari
Summary: This paper presents an iterative-based sizing algorithm for determining the optimal model of each system component in stand-alone photovoltaic systems. The algorithm aims to optimize the system's performance ratio or levelized cost of electricity. The results show that the iterative-based sizing algorithm outperforms the conventional algorithm in terms of computational time and convenience of sizing.
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.