Article
Energy & Fuels
Richard Felsberger, Armin Buchroithner, Bernhard Gerl, Bernhard Schweighofer, Hannes Wegleiter
Summary: The study introduces a new design and retrofit approach for a concentrated photovoltaic thermal system based on a parabolic trough collector, which employs a simplified topology and hybrid absorber equipped with multi-junction solar cells to achieve high electrical efficiency at reduced costs. Tests on the scaled prototype in Graz, Austria, showed average system efficiency of 75.5%, with peak solar cell efficiency reaching 30%, showcasing the potential for cost reduction in CPV-T systems.
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)
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)
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
Mechanics
Abdullah Albaker, Nestor Cuba Carbajal, Manuel Octavio Fernandez Atho, Anderson Nunez Fernandez, Maria Del Carmen Delgado Laime, Ani Mary Borda Echavarria, Reza Alayi, Morteza Aladdin
Summary: The aim of this study is to numerically investigate the performance of a solar physical surface absorption cooling system using activated carbon/methanol as a working pair inside a parabolic-shaped solar collector. The mathematical model is based on the conservation equations and thermodynamics of the physical surface absorption process. The model is validated through comparisons with previous laboratory and numerical studies. The effects of various parameters on the system's performance are investigated, and the solar performance coefficient and specific cooling power are determined to be 0.12 and 45.6 W/kg, respectively, based on the experimental model and working conditions.
Review
Thermodynamics
Tawfiq Chekifi, Moustafa Boukraa
Summary: This article presents a comprehensive review of the performance improvement research on parabolic trough collectors, with a focus on works using numerical methods. It outlines the possible further developments of these devices and identifies areas that need more attention and investigation.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Green & Sustainable Science & Technology
Yousef N. Dabwan, Gang Pei, Trevor Hocksun Kwan, Bin Zhao
Summary: The study introduces a new hybrid solar preheating intercooled gas turbine (SP-IcGT), which outperforms the conventional hybrid solar preheating gas turbine (SP-GT) in terms of fuel-based efficiency and specific fuel consumption. By integrating solar energy with the intercooled gas turbine, fuel consumption and greenhouse gas emissions can be greatly reduced while achieving economic benefits.
Article
Green & Sustainable Science & Technology
Natraj, K. S. Reddy
Summary: Solar parabolic trough collectors are a mature technology, but improvements in structural stability and accuracy of reflectors and receivers are necessary. This study investigates the combined effect of thermo-structural instability on collector performance. Results show a decrease in optical efficiency and significant loss due to bending and deflection in the reflector and receiver. This research will benefit the design and monitoring of trough collectors.
Article
Green & Sustainable Science & Technology
Hui Xiao, Peng Liu, Zhichun Liu, Wei Liu
Summary: This study proposed a research on achieving the uniformity of wall temperature in the parabolic trough collector through the longitudinal swirls impinging cooling method. The comparison of three different baffles revealed that the A1 type baffle demonstrated the best performance in terms of wall temperature uniformity and efficiency.
Article
Energy & Fuels
Kai Zhao, Hongguang Jin, Zhongrui Gai, Hui Hong
Summary: This study proposes a novel strategy for enhancing the thermal efficiency of solar collector by applying multiple solar selective-absorbing coatings in different sections of the collector. Analysis using a heat transfer model shows that the proposed strategy significantly improves the thermal performance of the system, reducing heat loss and enhancing thermal efficiency.
Article
Thermodynamics
Sara Sallam, Mohamed Taqi
Summary: Direct steam generation in parabolic trough solar collectors is a promising technology, but it requires adequate control to avoid deterioration risk. This study presents a detailed numerical model to analyze the operating conditions of the system. The results show that choosing appropriate mass flow rate and pressure can prevent stratification and regulating the flow rate according to solar radiation ensures high quality and duration of steam production.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Xiaojing Li, Pengpeng Yan, Jiangjiang Wang, Tao Yang
Summary: This study presents a numerical simulation of parabolic trough solar collector systems with different forms of vortex generators inserted in the absorber tube using [EMIM][BF4] ionic liquid. The effects of varying parameters on the thermal performance of the system are discussed. The results show that the use of vortex generators can significantly improve the thermal efficiency and exergetic efficiency of the system under certain parameters.
APPLIED THERMAL ENGINEERING
(2024)
Review
Engineering, Multidisciplinary
Morteza Bayareh, Azam Usefian
Summary: The parabolic trough solar collector (PTSC) is a medium-temperature solar system used for heat and power generation. It has been the focus of numerous theoretical and numerical investigations to improve its performance. This review paper discusses the fundamentals of PTSC systems, mathematical and turbulence models used for simulation, and presents challenges and future directions for researchers to achieve more accurate results with lower computational costs.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Green & Sustainable Science & Technology
Sara Ruiz-Moreno, Adolfo J. Sanchez, Antonio J. Gallego, Eduardo F. Camacho
Summary: This study proposes a methodology for detecting and isolating faults in parabolic-trough solar power plants. The methodology consists of three layers, including a neural network for fault detection and classification, analysis of flow rate dynamics, and analysis of thermal losses. The methodology has been applied and achieved high accuracies in fault detection and isolation.
Article
Green & Sustainable Science & Technology
Muhammed A. Hassan, Aya Fouad, Khaled Dessoki, Loiy Al-Ghussain, Ahmed Hamed
Summary: This study investigates the performance of four double-glazed receivers by comparing the evacuated and non-evacuated annular spaces and varying the absorber tube diameter and glass shell diameter ratios. The results show that fully evacuating the receiver and using the smallest diameter of the three concentric cylinders lead to the highest energy and exergy efficiencies. However, evacuating only the inner annular space is sufficient to achieve almost the same performance level. Double glazing the receivers is advantageous at high operating temperatures of sCO2, reducing thermal losses compared to single-glazed receivers.
Article
Energy & Fuels
Giorgio Cau, Vittorio Tola, Alberto Pettinau
Article
Energy & Fuels
Mario Petrollese, Luis Valverde, Daniele Cocco, Giorgio Cau, Jose Guerra
Article
Thermodynamics
Mario Cascetta, Giorgio Cau, Pierpaolo Puddu, Fabio Serra
APPLIED THERMAL ENGINEERING
(2016)
Article
Energy & Fuels
Mario Cascetta, Fabio Serra, Simone Arena, Efisio Casti, Giorgio Cau, Pierpaolo Puddu
Article
Thermodynamics
Vittorio Tola, Valentina Meloni, Fabrizio Spadaccini, Giorgio Cau
ENERGY CONVERSION AND MANAGEMENT
(2017)
Article
Energy & Fuels
Mario Petrollese, Daniele Cocco, Giorgio Cau, Euro Cogliani
Article
Energy & Fuels
Mario Petrollese, Giorgio Cau, Daniele Cocco
Article
Energy & Fuels
Giorgio Cau, Vittorio Tola, Francesca Ferrara, Andrea Porcu, Alberto Pettinau
Article
Energy & Fuels
Vittorio Tola, Simone Arena, Mario Cascetta, Giorgio Cau
Article
Energy & Fuels
Fabio Serra, Marialaura Lucariello, Mario Petrollese, Giorgio Cau
Review
Energy & Fuels
Joseph Oyekale, Mario Petrollese, Vittorio Tola, Giorgio Cau
Editorial Material
Energy & Fuels
Giorgio Cau, Mario Petrollese, Vittorio Tola
Article
Thermodynamics
Mario Petrollese, Mario Cascetta, Vittorio Tola, Daniele Cocco, Giorgio Cau
Summary: A novel Pumped Thermal Energy Storage (PTES) system integrated with a Concentrating Solar Power (CSP) plant is proposed and investigated. The system operates with the same working fluid as the CSP plant and includes a Thermal Energy Storage (TES) system composed of three packed-bed tanks. Mathematical models were developed to simulate the system's performance and evaluate the thermal profiles of the TES tanks. A feasible design with an exergetic roundtrip efficiency of about 60% was proposed based on the results.
Article
Energy & Fuels
Daniele Cocco, Lorenzo Lecis, Davide Micheletto
Summary: The aim of this paper is to evaluate the overall life cycle environmental impact of an adiabatic compressed air energy storage (ACAES) system. The study compares the impacts of a photovoltaic (PV) power plant and an integrated PV-ACAES system with a reference scenario in which the end user demand is met entirely by the grid. The best configuration found is a 30 MW PV plant integrated with an ACAES section using an underground cavern for air storage, which achieves improvements in energy self-consumption and reduces the environmental impact by 80-91% depending on the impact category in comparison to the reference scenario.
Proceedings Paper
Thermodynamics
S. Arena, G. Cau, C. Palomba
33RD UIT (ITALIAN UNION OF THERMO-FLUID DYNAMICS) HEAT TRANSFER CONFERENCE
(2015)
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.