Article
Green & Sustainable Science & Technology
Virendra Vishnu Bhagwat, Sujit Roy, Biplab Das, Nikhilkumar Shah, Avijit Chowdhury
Summary: This study investigated the performance of a heat pipe assisted parabolic trough collector with paraffin wax based phase change material for solar energy storage. The experiment was conducted in North-East India, comparing the system with and without circular fins in the heat pipe evaporator section. The presence of fins improved both charging and discharging efficiency of the latent heat storage system.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Energy & Fuels
Ridha Chargui, Bourhan Tashtoush, Sami Awani
Summary: This study presents an experimental evaluation of a new design of a parabolic trough solar collector, which achieved significant improvements in maximizing energy yield and system thermal efficiency compared to other designs. An economic study indicated a gross payback period of 3.3 years, demonstrating promising economic feasibility.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Multidisciplinary Sciences
Youssef Drira, Nadim Fakhfakh, Skander Jribi, Hatem Bentaher, Ilyes Benhassine, Lotfi Ammar
Summary: Parabolic trough collectors (PTCs) are advanced and widely used in solar concentrating systems, but their high cost and technology requirements hinder their implementation in low-income countries. This study assessed the performance of two small-scale solar thermal production units (SPLFR and PTC-SS) as alternatives to PTCs.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Ali M. Aqlan, Musaed Aklan, Abdulmalik E. Momin
Summary: This study aims to develop a single solar still that is directly connected with a solar parabolic trough and does not utilize any heat exchanger. Through field experiments, it was found that the overall water productivity of the modified solar still increased by 177% compared to the conventional still. The study also proposed future investigation of a step-shaped conical unit for the same device, which appears more promising and easier to handle, install, and maintain.
Article
Green & Sustainable Science & Technology
Muhammad Amin, Hamdani Umar, Fazri Amir, Suma Fachruri Ginting, Putu Brahmanda Sudarsana, Wayan Nata Septiadi
Summary: The study demonstrated the performance of a tubular solar distillation device equipped with HE using a parabolic trough collector, producing a sufficient amount of permeate with a peak efficiency of 48.2% during solar radiation.
Article
Energy & Fuels
Ali Malekpour, Rouhollah Ahmadi, Sadegh Sadeghzadeh
Summary: The study investigates the effectiveness of utilizing renewable energy and phase change energy storage technology to reduce energy consumption and greenhouse gas emissions in buildings, as well as the advantages of underfloor heating systems in providing comfortable heating conditions.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Green & Sustainable Science & Technology
Diogo do Carmo Zidan, Cristiana Brasil Maia, Mohammad Reza Safaei
Summary: Numerical simulations were conducted to predict the performance of PTC systems operating with eight different nanofluid compositions. The model also estimated daily incident solar radiation, beneficial energy gain, overall efficiency, thermal losses, and system pressure drop.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Multidisciplinary Sciences
Mohamed Mahran Kasem
Summary: This study presents a novel multi-objective optimization model for the design optimization of PTCs, with thermal and exergetic efficiencies being the primary performance indicators. The optimization model effectively maximizes both thermal and exergetic efficiencies, with water and helium achieving the highest optimal values, respectively.
SCIENTIFIC REPORTS
(2022)
Review
Green & Sustainable Science & Technology
Alibakhsh Kasaeian, Koosha Mirjavadi, Peyman Pourmoghadam, Faezeh Asgari Sima, Yasaman Amirhaeri, Sara Borhani, Leila Fereidooni
Summary: This paper provides a detailed review of the literature on parabolic trough collectors (PTC) combined with organic Rankine cycles (ORC). It examines various aspects such as modeling and simulation, optimization, exergy, economics, and experimental studies. The review also highlights the impact of different parameters on the performance of the proposed systems.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Engineering, Chemical
Amrit Kumar Thakur, Ravishankar Sathyamurthy, R. Velraj, I. Lynch, R. Saidur, A. K. Pandey, Swellam W. Sharshir, Zhenjun Ma, P. GaneshKumar, A. E. Kabeel
Summary: Solar energy is considered the most influential source for sustainable applications, showcasing its ability to convert brackish water into freshwater. This study presents a novel method of integrating a parabolic trough collector and activated carbon pellet to enhance water productivity in desalination units using sea-water as feed water.
Article
Engineering, Mechanical
Hafiz Muhammad Ali Hassan, Muhammad Amjad, Zia Ur Rehman Tahir, Adnan Qamar, Fahad Noor, Yanwei Hu, Talha Bin Yaqub, Enio P. Bandarra Filho
Summary: The study evaluated the performance of an integrated model of conventional solar still, flat plate collector, and parabolic trough collector using nanomaterials for producing potable water. The results showed that the integrated system with CNT nanofluid had the highest water production rate.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Natraj, B. N. Rao, K. S. Reddy
Summary: Solar energy, an emerging technology, is increasingly utilizing concentrating power technology in solar power plants, with the structural stability of parabolic trough collectors being crucial in maintaining optical and thermal efficiencies under wind loads. The study highlights the impact of wind loads on slope deviations and the importance of yaw and pitch angles in collector design, as well as the differences in performance between collectors made of different materials.
Article
Green & Sustainable Science & Technology
Tarun Kumar Aseri, Chandan Sharma, Tara C. Kandpal
Summary: The study explores ways to enhance the competitiveness of parabolic trough collector-based CSP plants by utilizing advanced materials and thermal storage technologies. By evaluating the impact of proposed changes on component requirements, the estimated reduction in capital costs for implementing these changes in India is approximately 12.3% to 29.9%.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Multidisciplinary Sciences
Wisam Abed Kattea Al-Maliki, Sajda S. Alsaedi, Hayder Q. A. Khafaji, Falah Alobaid, Bernd Epple
Summary: The validated dynamic model of a parabolic trough power plant (PTPP) is improved by introducing a new feedwater circuit and a reference feedwater circuit, as well as developing the steam turbine model. The purpose is to increase the power output during the day and extend the night operating hours at a lower cost. This improvement reduces the reliance on fossil fuel backup system and lowers the specific energy cost of the PTPP.
SCIENTIFIC REPORTS
(2023)
Article
Thermodynamics
P. Ferrer, Khaled Mohamad, M. C. Cyulinyana, Victor Kaluba
Summary: In this article, design approaches to a receiver enclosed in an opaque cavity and heated by a solar parabolic trough collector are discussed. The optimization of the interaction between the cavity receiver and the solar radiation from a collector mirror is explored, which differs from conventional receivers and is essential for utilizing the benefits of using a cavity sleeve. Through simulations, different focal plane positions and the relative sizes of the receiver elements are investigated, and a focal plane close to the surface of the absorber pipe is found to have the highest efficiency at 62%. An experimental cavity receiver and parabolic trough system are then built based on the simulations, and the simulation results are validated against measured data with a maximum discrepancy of 8%. A novel method using the cooling behavior of the receiver is also applied to confirm the physical parameters through simulations.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Seyed Houman Razavi, Rouhollah Ahmadi, Alireza Zahedi
APPLIED THERMAL ENGINEERING
(2018)
Article
Electrochemistry
S. A. Amirkhalili, A. R. Zahedi
Article
Green & Sustainable Science & Technology
Alireza Zahedi, Hossein Timasi, Alibakhsh Kasaeian, Seyed Abolfazl Mirnezami
Article
Thermodynamics
Seyed Abolfazl Mirnezami, Alireza Zahedi, Ardeshir Shayan Nejad
Article
Green & Sustainable Science & Technology
Ali Reza Zahedi, Seyed Abolfazl Mirnezami
Article
Chemistry, Physical
Ali Reza Zahedi, Sina Labbafi, Ali Ghaffarinezhad, Kaveh Habibi
Summary: This study focuses on designing, optimizing, and constructing a hybrid system to enhance the sustainability of wind power. Various parameters in different sections are investigated to improve system performance and efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Esfandyar Askari, Seyed Morteza Naghib, Alireza Zahedi, Amir Seyfoori, Yasser Zare, Kyong Yop Rhee
Summary: A novel graphene reinforced gelatin hydrogel was studied for tissue engineering and localized therapy, utilizing protein-integrated graphene (PIG) to control the release rate of chemotherapy agents. The effectiveness of the controlled release system was confirmed through MCF-7 cell viability and 3D tumor spheroid tests as in vivo models.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Green & Sustainable Science & Technology
Mahyar Tafavogh, Alireza Zahedi
Summary: In this study, nanoencapsulation of PCM n-Octadecane with PMMA polymeric shell enhanced with comonomer PEHA was achieved via miniemulsion polymerization. The addition of comonomer EHA improved the thermal stability and morphology of the polymeric shell. Optimized nanocapsules demonstrated an encapsulation percentage of 83.3% and latent heat of 66 Jg(-1), providing effective thermal comfort in the proposed heating system.
Article
Energy & Fuels
Alireza Zahedi, Sina Labbafi
Summary: A novel hybrid system was designed and constructed to cultivate Nannochloropsis oculata microalgae efficiently, achieving a maximum biomass production. The efficiency of biofuel-to-biodiesel conversion was studied and obtained a conversion rate of 80.4%.
Article
Green & Sustainable Science & Technology
Mohammad Nahavandinezhad, Alireza Zahedi
Summary: This study investigated the feasibility of utilizing geothermal and solar energy to replace natural gas in Sistan/Baluchestan province, Iran. By modeling and evaluating four solar-assisted ground source heat pump systems, the optimal solution was found to have high investment return and environmental benefits.
Article
Green & Sustainable Science & Technology
A. Tizvir, M. H. Shojaeefard, A. Zahedi, G. R. Molaeimanesh
Summary: This study investigated the performance and emission characteristics of biodiesel produced from Dunaliella tertiolecta microalgae for the first time. Results showed that B10 and B20 biofuels emitted less pollutants than diesel fuel but produced more O-2 and CO2, and using B20 fuel led to a decrease in engine output power and an increase in BSFC.
Article
Energy & Fuels
Peyman Taheri, Ali Reza Zahedi
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.
