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
Energy & Fuels
Wisam Abed Kattea Al-Maliki, Auday Shaker Hadi, Hussein M. H. Al-Khafaji, Falah Alobaid, Bernd Epple
Summary: Several improvements have been made to the referenced parabolic trough power plant (PTPP) model, resulting in increased electricity production, extended operating hours, and reduced dependence on fossil fuels. The optimizations include increasing the collector loops, improving the thermal storage system, and replacing the feedwater circuit with a feedwater/HTF circuit.
Article
Green & Sustainable Science & Technology
M. Medhat El-Bakry, Mahmoud A. Kassem, Muhammed A. Hassan
Summary: Boosting the optical and thermal efficiencies of parabolic trough concentrators is gaining global interest. This study proposes a new design with floating radiation heat shields to enhance energy and exergy efficiencies. The configuration with a diameter of 75 mm and a shading angle of 150 degrees showed the highest improvement ratios.
Article
Green & Sustainable Science & Technology
Anass Zaaoumi, Abdellah Bah, Mihaela Ciocan, Patrick Sebastian, Mugur C. Balan, Abdellah Mechaqrane, Mohammed Alaoui
Summary: In this study, three models were used to estimate the hourly electric production of a parabolic trough solar thermal power plant in Eastern Morocco. The results show that the artificial neural networks (ANN) model performs better than the analytical models, accurately estimating the energy production.
Article
Energy & Fuels
Georgios E. Arnaoutakis, Dimitris Al. Katsaprakakis, Dimitris G. Christakis
Summary: This paper investigates the potential of two concentrating solar power technologies, central power towers and parabolic trough collectors, in the same plant configuration through dynamic modeling. The results show that the configuration of a power tower and parabolic trough collectors has a more stable power profile and higher capacity factor compared to standalone plants based on a single technology.
Article
Energy & Fuels
Lukasz Bartela, Bartosz Stanek, Daniel Wecel, Anna Skorek-Osikowska
Summary: This study presents a new methodology for evaluating solar radiation simulators using 22 reflectors to achieve uniform energy distribution. Research has shown that in terms of maintaining the energy field's homogeneity and the price for the entire radiation simulator, it is more reasonable to construct a simulator consisting of 22 reflectors.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Jose A. Lopez-Alvarez, Miguel Larraneta, Elena Perez-Aparicio, Manuel A. Silva-Perez, Isidoro Lillo-Bravo
Summary: This paper discusses operation strategies and modes for integrated hybrid CSP + PV systems, focusing on parabolic trough solar plants in southern Spain. The study involves defining suitable states for subsystems, proposing modes based on suitable states, and establishing transition conditions depending on operation strategies. It also presents two operation strategies: demand coverage and base load production, which can aid decision making in simulation programs for hybrid solar systems.
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
Energy & Fuels
Cristina Prieto, Francisco Javier Pino, Luisa F. Cabeza
Summary: This study evaluates the technoeconomic potential of a CSP plant with high temperature concrete as TES system compared to the standard commercial molten salts system, and finds that the molten salt system performs better than the high temperature concrete configuration in general conditions.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Mehmet Emre Burulday, Mehmet Selcuk Mert, Nader Javani
Summary: This study investigates a solar energy power plant integrated with a biomass-based hydrogen production system. High-purity hydrogen is obtained from biomass-based syngas using thermochemical processes. The plant is simulated using Aspen HYSYS software, and the thermodynamic performance of the hybrid system is evaluated using exergy analysis. The results show that designing and operating a hybrid high-performance energy system using two different renewable sources is an encouraging approach to reduce the environmental impact of energy conversion processes and effectively utilize energy resources.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Peiye Zhang, Ming Liu, Yongliang Zhao, Junjie Yan
Summary: The Parabolic Trough Solar Receiver-Reactor (PTSRR) of Methanol Decomposition Reaction process (MDR) has gained attention for its ability to achieve chemical storage and efficient utilization of solar energy. A model of PTSRR-MDR is developed and validated to study its performance under off-design conditions and dynamic processes. The analysis shows that exergy destruction caused by solar concentrating and thermochemical reaction limits the improvement of exergy efficiency. The results also provide guidance for efficient operation control.
Article
Thermodynamics
Waleed Al-Aloosi, Yaser Alaiwi, Hudhaifa Hamzah
Summary: This research employed numerical simulations to study the turbulent flow in a modified parabolic trough solar collector with inserted fins. The purpose of incorporating these fins was to improve heat transfer efficiency. The simulations showed that all modified models had higher thermal performance than the reference model, with the sixth model achieving a maximum thermal performance of 1.4. Additionally, different cross-sectional areas of fins, including circular, elliptical, and square, were examined, with circular fins achieving the highest thermal performance of 1.4.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Muhammad Zubair, Ahmed Bilal Awan, Mohammad Abdul Baseer, Mohammad Nadeem Khan, Ghulam Abbas
Summary: The optimization of the parabolic trough based concentrated solar power system for solar energy export from Saudi Arabia to Asian and European countries has been analyzed. By selling electrical energy generated during peak load hours, the system aims to reduce the customers' load factor and keep the capital cost minimum. A high voltage direct current transmission system is employed for exporting 2 GW solar energy by PT based CSP system transmitted through bipolar 660 kV HVDC transmission line.
Article
Thermodynamics
Zhenghua Rao, Cunyue Peng, Yaqiong Wang, Yitao Wang, Gang Liu, Shengming Liao
Summary: A dynamic thermodynamics model was developed to simulate the response behaviors of CO2-TRC in trough CSP systems, showing that cloud thickness and cover duration have different impacts on system performance, with the recovery time for the regenerative system potentially being three times longer than that for the simple system.
APPLIED THERMAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Paula Chanfreut, Jose M. Maestre, Antonio Gallego, Anuradha M. Annaswamy, Eduardo F. Camacho
Summary: This paper proposes a clustering-based model predictive controller to optimize the heat transfer fluid (HTF) flow rates in solar parabolic trough plants. The hierarchical approach consists of two layers: a bottom layer of model predictive control agents and a top layer that dynamically partitions the loops into clusters. The dynamic clustering reduces the variables to be coordinated and speeds up the computations. Numerical results are provided for a 10-loop and an 80-loop plant.
Article
Green & Sustainable Science & Technology
Gustavo Carielo da Silva, Chigueru Tiba, Glicia Maria Torres Calazans
Review
Green & Sustainable Science & Technology
Ricardo Cesar de Andrade, Chigueru Tiba
Article
Energy & Fuels
Veronica Wilma B. Azevedo, Ana Lucia B. Candeias, Chigueru Tiba
Article
Chemistry, Physical
Chigueru Tiba, Sergio da Silva Leal
INTERNATIONAL JOURNAL OF PHOTOENERGY
(2017)
Article
Energy & Fuels
Igor Cavalcante Torres, Gustavo F. Negreiros, Chigueru Tiba
Article
Energy & Fuels
Manoel Henriques de Sa Campos, Chigueru Tiba
Article
Energy & Fuels
Manoel Henriques de Sa Campos, Chigueru Tiba
Summary: The article introduces a novel solar tracking model based on controlling angle deviation within a single-axis configuration to optimize solar energy utilization by minimizing mechanical wear and energy consumption.
Article
Energy & Fuels
Leonardo Faustino Lacerda de Souza, Naum Fraidenraich, Chigueru Tiba, Jeffrey M. Gordon
Summary: The linear aplanatic Fresnel reflector (LAFR) is a novel optical design suitable for solar thermal power plants, combining a segmented primary reflector with a stationary secondary mirror and receiver. By eliminating geometric aberrations, it achieves high-efficiency light concentration and high intercept factors.
Article
Energy & Fuels
Igor Cavalcante Torres, Daniel M. Farias, Andre L. L. Aquino, Chigueru Tiba
Summary: This study introduces a method of using batteries for voltage regulation, controlling the charging and discharging of energy storage devices under different weather conditions by predicting solar radiation and using an overvoltage mitigation system to maintain a constant state of charge of the battery bank. Increasing the capacity of the battery bank is necessary under low variability weather conditions to meet the condition of maximum accumulated energy.
Article
Green & Sustainable Science & Technology
Chigueru Tiba, Veronica Wilma Bezerra Azevedo, Marcos Diego A. C. Paes, Leonardo F. L. de Souza
Summary: This study simulated a linear parabolic solar plant in Bahia, Brazil, to meet the thermal and electric demand of a small industry. The results showed that the solar plant in Bahia is cost-competitive compared to the US and European markets.
Article
Energy & Fuels
Leonardo F. L. de Souza, Naum Fraidenraich, Chigueru Tiba, Jeffrey M. Gordon
Summary: Linear Aplanatic Fresnel Reflectors (LAFRs) have been introduced as a new and viable dual-mirror solar concentrator. Analytic methods for all inherent optical losses in the LAFR have been presented, allowing rapid comparisons among a wide range of possible designs. The results show LAFR designs with higher intercept factor and higher concentration, surpassing the previously determined ones.
Article
Water Resources
Fabio Coutinho, Chigueru Tiba
Summary: This study analyzed and modeled the behavior of a water supply system utilizing PV technology under different meteorological conditions, using an artificial neural network model to predict flow rates with acceptable errors.
SUSTAINABLE WATER RESOURCES MANAGEMENT
(2021)
Proceedings Paper
Green & Sustainable Science & Technology
Veronica Azevedo, Marcos D. C. Paes, Chigueru Tiba
INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS (SOLARPACES 2017)
(2018)
Article
Green & Sustainable Science & Technology
Gustavo Carielo, Glicia Calazans, Glaucia Lima, Chigueru Tiba
Article
Green & Sustainable Science & Technology
Jose Leonaldo De Souza, Gustavo Bastos Lyra, Cicero Manoel Dos Santos, Ricardo Araujo Ferreira Junior, Chigueru Tiba, Guilherme Bastos Lyra, Marco Antonio Maringolo Lemes
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2016)
Article
Energy & Fuels
Siddharth Sradhasagar, Omkar Subhasish Khuntia, Srikanta Biswal, Sougat Purohit, Amritendu Roy
Summary: In this study, machine learning models were developed to predict the bandgap and its character of double perovskite materials, with LGBMRegressor and XGBClassifier models identified as the best predictors. These models were further employed to predict the bandgap of novel bismuth-based transition metal oxide double perovskites, showing high accuracy, especially in the range of 1.2-1.8 eV.
Article
Energy & Fuels
Wei Shuai, Haoran Xu, Baoyang Luo, Yihui Huang, Dong Chen, Peiwang Zhu, Gang Xiao
Summary: In this study, a hybrid model based on numerical simulation and deep learning is proposed for the optimization and operation of solar receivers. By applying the model to different application scenarios and considering multiple performance objectives, small errors are achieved and optimal structure parameters and heliostat scales are identified. This approach is not only applicable to gas turbines but also heating systems.
Article
Energy & Fuels
Mubashar Ali, Zunaira Bibi, M. W. Younis, Muhammad Mubashir, Muqaddas Iqbal, Muhammad Usman Ali, Muhammad Asif Iqbal
Summary: This study investigates the structural, mechanical, and optoelectronic properties of the BaCuF3 fluoroperovskite using the first-principles modelling approach. The stability and characteristics of different cubic structures of BaCuF3 are evaluated, and the alpha-BaCuF3 and beta-BaCuF3 compounds are found to be mechanically stable with favorable optical properties for solar cells and high-frequency UV applications.
Article
Energy & Fuels
Dong Le Khac, Shahariar Chowdhury, Asmaa Soheil Najm, Montri Luengchavanon, Araa mebdir Holi, Mohammad Shah Jamal, Chin Hua Chia, Kuaanan Techato, Vidhya Selvanathan
Summary: A novel recycling system is proposed in this study to decompose and reclaim the constituent materials of organic-inorganic perovskite solar cells (PSCs). By utilizing a one-step solution process extraction approach, the chemical composition of each layer is successfully preserved, enabling their potential reuse. The proposed recycling technique helps mitigate pollution risks, minimize waste generation, and reduce recycling costs.
Article
Energy & Fuels
Peijie Lin, Feng Guo, Xiaoyang Lu, Qianying Zheng, Shuying Cheng, Yaohai Lin, Zhicong Chen, Lijun Wu, Zhuang Qian
Summary: This paper proposes an open-set fault diagnosis model for PV arrays based on 1D VoVNet-SVDD. The model accurately diagnoses various types of faults and is capable of identifying unknown fault types.