Article
Green & Sustainable Science & Technology
Govinda R. Timilsina
Summary: Renewable energy technologies, especially solar and wind energy technologies, have experienced a rapid decline in costs over the past two decades, making them cost-competitive with fossil fuel technologies. However, there is currently no consensus on the cost competitiveness due to wide variations in factors influencing LCOEs across countries and technologies.
Article
Green & Sustainable Science & Technology
Abbas Asakereh, Mohsen Soleymani, Seyed Mohammad Safieddin Ardebili
Summary: This study developed a fuzzy multi-criteria decision-making method for ranking renewable power generation technologies, with results indicating that solar photovoltaics and concentrated solar power are the top choices in Khuzestan province, Iran.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Review
Multidisciplinary Sciences
Emmanuel P. Agbo, Collins. O. Edet, Thomas O. Magu, Armstrong O. Njok, Chris M. Ekpo, Hitler Louis
Summary: The article reviews the current status and research progress of solar energy in Nigeria, highlighting the country's overdependence on crude oil and natural gas leading to an energy consumption crisis. It also emphasizes the potential of solar energy generation in Nigeria and the challenges it faces, with recommendations and policies proposed to address them.
Article
Green & Sustainable Science & Technology
Muhammad Shahid Mastoi, Hafiz Mudassir Munir, Shenxian Zhuang, Mannan Hassan, Muhammad Usman, Ahmad Alahmadi, Basem Alamri
Summary: This article analyzes the structure of China's electric power industry and demonstrates how different energy policies can promote the application of renewable energy. The study highlights the increase in electricity generation and consumption in China from 2020 to 2021, as well as the growth of renewable energy capacity. However, there are still risks associated with China's renewable energy development.
Review
Green & Sustainable Science & Technology
Faissal Jelti, Amine Allouhi, Mahmut Sami Buker, Rachid Saadani, Abdelmajid Jamil
Summary: This article focuses on the role of the supply chain in the renewable power generation sector, evaluating its contribution and recommending key measures to overcome barriers to development. Key performance indicators are established to achieve high efficiency and sustainability performances in the power sector.
Review
Chemistry, Physical
Zineb Aqachmar, Hicham Ben Sassi, Khadija Lahrech, Abdelfettah Barhdadi
Summary: This paper provides a detailed review of the latest advancements in solar electricity production devices, categorizing them into different types and evaluating their environmental and financial performances. A statistical study is conducted to determine the rankings of various solar technologies in terms of electricity production worldwide, while also highlighting research trends in the development of solar electricity plants.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Energy & Fuels
Chris Johnathon, Ashish Prakash Agalgaonkar, Joel Kennedy, Chayne Planiden
Summary: This paper discusses the challenges faced by global electricity markets in the process of energy transition, as well as the characteristics and barriers of various market models.
Article
Multidisciplinary Sciences
Natanael Bolson, Pedro Prieto, Tadeusz Patzek
Summary: In light of the consequences of climate change and the war in Ukraine, it is crucial to decarbonize electrical power systems globally while avoiding repeated blackouts. A comprehensive understanding of the performance and reliability of various power sources is essential for this endeavor. The capacity factor serves as a direct measure of the effectiveness and cost of power generation, enabling calculations to determine the necessary capacity to replace or expand current fossil fuel-based electricity generation using solar PV or wind power.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Green & Sustainable Science & Technology
Carla Cristiane Sokulski, Murillo Vetroni Barros, Rodrigo Salvador, Evandro Eduardo Broday, Antonio Carlos de Francisco
Summary: The use of non-renewable energy sources increases environmental impacts. This article analyzes the trends in renewable electricity supply in the G20 countries and finds that Brazil and Canada have the largest renewable electricity matrices, while Saudi Arabia has the smallest. The countries with the highest GDP are not necessarily the largest producers of renewable electricity, and hydroelectric energy is still the dominant source. However, wind and solar energy are growing in their contribution to the electrical matrices, and other sources are showing a slow but steady increase in participation.
Article
Chemistry, Physical
Charlie Wilson, Simon De Stercke, Caroline Zimm
Summary: Granular energy technologies, with smaller unit sizes and costs, have advantages in faster deployment, job creation, and wider distribution of benefits compared to large-scale alternatives. A study analyzed 93 green recovery funding programs in France, Germany, South Korea, and the UK, and found that South Korea's program had the highest technological granularity, focusing on distributed renewables, smart technologies, and low-cost technologies that are quick to implement. The UK, on the other hand, concentrated public funds on a few mega-scale energy projects with high implementation risks, resulting in the least granular portfolio. The study demonstrates the importance of technological granularity in achieving green recovery goals.
Article
Green & Sustainable Science & Technology
Daud Abdul, Wenqi Jiang, Arsalan Tanveer
Summary: Renewable energy sources offer an efficient solution to the worldwide energy crisis and environmental issues. The assessment model prioritizes hydropower as the best option, followed by wind energy, biomass energy, and solar energy. The assessment results can assist decision-makers in Pakistan in formulating sustainable energy policies.
Article
Green & Sustainable Science & Technology
Qiao Peng, Weilong Liu, Yong Zhang, Shihong Zeng, Byron Graham
Summary: Increased use of environmentally friendly and energy-efficient transportation, such as electric vehicles, leads to higher demand for power supply, which puts pressure on the electricity infrastructure. This study proposes a combinatorial optimization approach using fuzzy set theory to effectively plan power production across multiple technologies. The approach considers uncertain factors as fuzzy variables in a multi-period optimization task and incorporates return and risk objectives. Experimental results in the Chinese energy market illustrate seasonal variation in profits and risks of each production technology. The proposed approach assists decision-makers in establishing multi-period production planning and provides guidance for regulators in formulating appropriate policies.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Green & Sustainable Science & Technology
Lucas de Oliveira, Ivan Felipe Silva dos Santos, Nagila Lucietti Schmidt, Geraldo Lucio Tiago Filho, Ramiro Gustavo Ramirez Camacho, Regina Mambeli Barros
Summary: Capturing wave power from the ocean is a renewable energy form with great potential in countries like Brazil. The study shows that a high capacity factor has a significant impact on LCOE values, making ocean wave energy a competitive option compared to photovoltaic solar energy.
Article
Chemistry, Multidisciplinary
Peter Durcansky, Branislav Zvada, Radovan Nosek, Jan Najser, Tomas Najser
Summary: The use of renewable resources has been increasing in recent years, which is closely related to state support. The article analyzes the use of renewable energy sources in the Czech Republic and the impact of state support on the number of installations. It also presents the development of the legislative framework and predicts the future impact of government measures.
APPLIED SCIENCES-BASEL
(2023)
Article
Thermodynamics
Svante Monie, Annica M. Nilsson, Joakim Widen, Magnus Aberg
Summary: Power systems with high shares of wind and solar power require flexibility in power generation and demand. A study in Sweden tested the hypothesis that a residential area could form a virtual power plant to provide power-balancing services to the national power system, showing that it can offer increased flexibility by providing such services.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Mike Uche Ajieh, Nosakhare Andrew Amenaghawon, Kesiena Owebor, Oghenero Henry Orugba, Esua Bassey Bassey
Summary: Water-soluble polymers are used to improve drilling operations, but excessive utilization of these additives may have negative implications on drilling outcomes, increasing the equivalent circulating density may lead to formation damage.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
M. U. Ajieh, H. I. Owamah, L. C. Edomwonyi-Otu, G. I. Ajieh, P. Aduba, K. Owebor, S. C. Ikpeseni
Summary: The Water Boiling Test (WBT) was conducted to measure carbon monoxide (CO) and particulate matter (PM2.5) emissions. A laboratory setup, called the Laboratory Emission Monitoring System (LEMS), was used to model a typical rural kitchen environment, and a WBT tailored tool for Controlled Cooking Test (CCT) was employed. Five different types of cookstoves were tested, and the CO emissions were represented by categories such as CO-unvented natural draft (COUN) and CO-general cookstove (COGE). Similarly, the PM emissions were represented as PM-unvented natural draft (PMUN) and PM-general cookstove (PMGE). The study found that COGE and CODS had the lowest emissions, while COTH had the highest. Similarly, PMTH had the highest PM emissions. The study highlights the importance of improving cookstove design and ventilation to improve health outcomes in low-income rural areas.
ENERGY FOR SUSTAINABLE DEVELOPMENT
(2023)
Article
Nanoscience & Nanotechnology
Mohamed R. Berber, Muhammad Imran, Hanako Nishino, Hiroyuki Uchida
Summary: The addition of hygroscopic silica nanoparticles to the Pt/C anode catalyst layer can greatly prolong the lifetime of a Nafion membrane in the accelerated stress test and improve the output performance at low relative humidity. It can also decrease the formation rate of H2O2 and reduce the ohmic resistance, leading to effective utilization of Pt cathode catalyst. These findings provide a rational explanation for the enhancement of PEM durability and output performance.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Agricultural Engineering
M. O. Ukoba, E. O. Diemuodeke, T. A. Briggs, M. Imran, K. Owebor, C. O. Nwachukwu
Summary: Despite challenges, Nigeria has a potential to utilize biomass resources from forests and crop residues for clean energy generation. The estimated energy potential for crop and forest residues is 3477.02 and 685.90 PJ/yr respectively, indicating the significance of biomass energy in meeting the country's energy demands. The study also proposes policy pathways and biomass-to-energy conversion technologies to promote the penetration of biomass energy in Nigeria.
BIOMASS & BIOENERGY
(2023)
Article
Thermodynamics
Muhammad Ahmed, Abubakr Ayub, Nadeem Ahmed Sheikh, Muhammad Wakil Shahzad, Muhammad Haroon, Muhammad Imran
Summary: This paper focuses on the optimization of supercritical CO2 recompression and partial cooling cycles under various conditions. The study investigates the effects of heat sink temperature, mass split fraction, and cycle minimum pressure on the thermal efficiency of the power cycles. Response surface method and ANOVA approach are used to develop mathematical models and analyze the most influential parameters. The results reveal that the heat sink temperature has the greatest impact on thermal efficiency in the recompression cycle, while the minimum pressure plays the most significant role in the partial cooling cycle.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Hafiz M. Asfahan, Muhammad Sultan, Muhammad Farooq, Sobhy M. Ibrahim, Muhammad Imran, Ahmed A. Askalany, Muhammad W. Shahzad, Yuguang Zhou, Uzair Sajjad, Yong-qiang Feng
Summary: This study investigates the emerging adsorbents for adsorption desalination cum cooling system (ADCS) based on water production potential (WPP), specific cooling potential (SCP), energy required (ER), and coefficient of performance (COP). Among the studied adsorbents, A++, RD, Syloid 72FP + 57 wt% Emim-Ac, bipy-CTF500, and PS-II show relatively good performance. Syloid 72FP + 57 wt% Emim-Ac exhibits 5.6 times higher performance compared to A++ and could be a potential adsorbent for ADCS. The COP of all the studied adsorbents ranges from 0.74 to 0.93.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Physical
Tabbi Wilberforce, A. G. Olabi, Muhammad Imran, Enas Taha Sayed, Mohammad Ali Abdelkareem
Summary: This study investigates the production of green hydrogen using a polymer electrolyte membrane electrolyzer powered by a vertical axis wind turbine. A comprehensive mathematical model of the system was developed using a numerical approach and simulation tools. The study explores different types of electrolyzers and recommends the use of Proton Exchange Membrane Electrolysers. Various power electronics required for connecting the wind turbine to the electrolyzer were also discussed. The performance of the electrolyzer was found to be influenced by temperature, pressure, and wind intensity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Israr Ahmed, Jamal Umer, Abdullah Altamimi, Ahmad Raza Khan Rana, Zafar A. A. Khan, Muhammad Imran, Muhammad Awais, Saeed Alyami
Summary: The heat loss through the building envelope is mainly due to air leaks through cracks and windows, with windows being the weakest part of the thermal envelope. A systematic approach is needed to analyze the selection of glass for buildings. This study aims to analyze the energy-saving potential of different glasses and their payback time in terms of energy saving. The results of the quantitative simulation study show that performance glasses with a tint have better energy-saving efficiency, with a payback time of 3-7 months. Among all glasses, float glass contributes the most to the total cooling load, while tinted double-glazed glass contributes the least.
Article
Thermodynamics
Arvin Sohrabi, Nima Asgari, Muhammad Imran, Muhammad Wakil Shahzad
Summary: This study focuses on two different configurations of high-temperature Kalina cycles, and proposes an enhanced thermal performance by embedding thermoelectric generators in the condensers. The thermodynamic, economic, and environmental assessments were conducted, showing that the use of thermoelectric generators improves the total power capacity and the economic feasibility of the cycles. Furthermore, a parametric study was carried out to analyze the influences of different parameters on the performance criteria of the cycles.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
Muhammad Ahmad Jamil, Muhammad Wakil Shahzad, Ben Bin Xu, Muhammad Imran, Kim Choon Ng, Syed M. Zubair, Christos N. Markides, William M. Worek
Summary: There has been a significant increase in cooling demand in recent decades. The current focus of research in cooling is on the development of unconventional, sustainable cooling systems, such as indirect evaporative coolers, which have shown great potential. However, these systems are still in the development stage and face certain design challenges.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Physical
Hafiz M. M. Asfahan, Muhammad Sultan, Muhammad Farooq, Fahid Riaz, Sobhy M. M. Ibrahim, Md Shamim Ahamed, Muhammad Imran
Summary: This study evaluates the performance of four phenol resin derivative/refrigerant pairs for adsorption cooling and adsorption heating applications. It is found that KOH6-PR/ethanol exhibits the best performance under optimal working conditions. The cooling and heating capacities vary with different pressure conditions.
Review
Energy & Fuels
Fidelis Ibiang Abam, Chinedum Oscar Nwachukwu, Nnaemeka Vincent Emodi, Chukwumerije Okereke, Ogheneruona E. Diemuodeke, Abdulhameed Babatunde Owolabi, Kesiena Owebor, Dongjun Suh, Jeung-Soo Huh
Summary: The buildings sector plays a significant role in global energy utilization and carbon emissions. This study examines low-carbon buildings in selected global south regions under deep decarbonization scenarios. The findings highlight the importance of population, gross domestic product, dwelling characteristics, and urbanization as critical drivers of emissions in these regions. It emphasizes the need for total investment from the private and public sectors to achieve decarbonization in the building sector.
FRONTIERS IN ENERGY RESEARCH
(2023)
Article
Agronomy
Hadeed Ashraf, Saliha Qamar, Nadia Riaz, Redmond R. Shamshiri, Muhammad Sultan, Bareerah Khalid, Sobhy M. Ibrahim, Muhammad Imran, Muhammad Usman Khan
Summary: The estimation of reference evapotranspiration (ETo) in Punjab, Pakistan was conducted to assess the spatiotemporal variation of climatic parameters on ETo. The results indicated that ETo was mainly influenced by minimum temperature, maximum temperature, and windspeed, with higher values in southern Punjab compared to northern Punjab. Accurate estimation of ETo can contribute to improved irrigation scheduling for different crops in Punjab.
Proceedings Paper
Energy & Fuels
Ogheneruona E. Diemuodeke, Kesiena Owebor
Summary: This study investigates the utilization of syngas from solid wastes and natural gas, combined with carbon capture technology, to reduce greenhouse gas emissions from power plants and landfills. The results demonstrate that an optimal syngas and natural gas composition of 0.47 and 0.53, respectively, can generate 208.8 MW of electrical power. The system's technical efficiency is 43%, with a carbon dioxide emission factor of 0.029 tonnes per MWh and a CO2 transportation rate of 612.2 kilotonnes per year. The proposed power system is estimated to cost USD 236.7 million, with a unit energy cost of 0.141 USD per kWh, a CO2 avoidance cost of 110 USD per tonne of CO2, and a payback period of 5.2 years. The study also suggests incorporating hydrogen energy storage for reliable electricity supply throughout the year, but further research is needed to optimize its integration into the proposed power plant.
PROCEEDINGS OF THE INTERNATIONAL RENEWABLE ENERGY STORAGE CONFERENCE, IRES 2022
(2023)
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.
