Article
Thermodynamics
Xin Wen, Jie Ji, Zhaomeng Li, Zhiying Song, Tingting Yao
Summary: A concentrated photovoltaic/thermal system with micro-channel heat pipes and thermoelectric generators was constructed. Experimental work demonstrated the feasibility of the system and validated the mathematical model. A simulation study investigated the impact of adding a glass cover and the volume of the water tank, showing improvements in electrical efficiency and temperature with some trade-offs between electrical and thermal performance.
Article
Energy & Fuels
A. Torbatinezhad, A. A. Ranjbar, M. Rahimi, M. Gorzin
Summary: For enhancing the proficiency of photovoltaic cells used in the parabolic concentrated photovoltaic system, the present study investigates the use of a wavy mini-channel heatsink coupled with jet impingement. The impacts of wavelengths of mini-channel and jet angles are explored to achieve better performance. The study also examines the effects of water flow rate variations as a coolant. The results show that adjusting the wavelengths and jet angles can significantly improve system performance, and increasing the coolant flow rate and reducing the mini-channel wavelength can effectively reduce cell temperature and improve electrical efficiency.
Article
Energy & Fuels
Arash Kazemian, Ali Salari, Tao Ma, Hao Lu
Summary: A novel combined photovoltaic thermal system is proposed to solve the low outflow temperature and lack of electrical production drawbacks in conventional systems. The performance of different hybrid nanofluids is compared, and it is found that the multiwall carbon-silicon carbide hybrid nanofluid has the best performance. Moreover, the components of the solar collector in the combined system produce more entropy generation.
Article
Thermodynamics
Muhammad Amir Aziat Bin Ishak, Adnan Ibrahim, Ahmad Fazlizan, Mohd Faizal Fauzan, Kamaruzzaman Sopian, Aqil Afham Rahmat
Summary: A reversed circular flow jet impingement (RCFJI) was used as a cooling mechanism for a bifacial photovoltaic thermal (PVT) solar collector, and the exergy efficiency of this system was analyzed. The experimental results showed that under a solar irradiance of 900W/m2 and a mass flow rate of 0.14kg/s, the highest photovoltaic exergy and thermal exergy achieved were 47.2W and 9.67W, respectively. The exergy efficiency reached a maximum value of 12.64% under the solar irradiance of 900W/m2, with the optimal operational mass flow rate determined as 0.06kg/s.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Kunal Sandip Garud, Moo-Yeon Lee
Summary: In this study, thermodynamic, environmental, and economic analyses were conducted on photovoltaic/thermal (PV/T) and photovoltaic/thermal-thermoelectric generator (PV/T-TEG) systems. The results showed that the PV/T-TEG system outperformed the PV/T system, and Al2O3/Cu nanofluid and oblate spheroid-shaped nanoparticles exhibited superior performances in both systems.
Article
Green & Sustainable Science & Technology
Nabil Elminshawy, Ahmed Elminshawy, Amr Osama, M. Bassyouni, Muslum Arici
Summary: The rise in operating temperature of solar photovoltaic concentrator (C-PV) system modules is a key issue in their intensive utilization. A novel active cooling system with nanofluids is found to effectively cool the C-PV module, improving electrical and thermal efficiencies.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Suqi Wang, Seyed Amin Bagherzadeh, Ahmed N. Abdalla, Muhammad Shahzad Nazir
Summary: This study aims to estimate the annual exergy yield of a hybrid system consisting of a PV/T system and a thermal wheel. A systematic method is proposed to find the optimal configuration of Artificial Neural Network (ANN) for modeling the exergy of the hybrid system.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
T. Zhang, Y. F. Zhang, Z. R. Shi, Q. F. Li, J. Y. Cai
Summary: A hybrid PV/T collector/evaporator was designed and a hybrid system named PV-SAHP/GHP was proposed. Outdoor experiments were conducted to compare the operating characteristics of different modes. The results showed that the GHP-PV/T mode had satisfactory energy-saving effect while the PV-SAHP mode met the temperature demand but had unsatisfactory energy conservation effect. It is recommended to operate the GHP-PV/T mode during intense radiation and the PV-SAHP mode otherwise to balance the thermal performance and energy-saving benefits.
Article
Energy & Fuels
Qiliang Wang, Yao Yao, Zhicheng Shen, Hongxing Yang
Summary: A novel parabolic trough collector-photovoltaic (PTC-PV) system is proposed to enhance the thermal performance and solar utilization efficiency. Mathematical models are established and experiments are conducted to validate the superior performance of the hybrid PTC-PV system.
Article
Green & Sustainable Science & Technology
Liu Liu, Jianlei Niu, Jian-Yong Wu
Summary: This study evaluated the use of phase change material nano-emulsions as coolants in liquid-cooled photovoltaic/thermal systems to improve overall efficiency. Two different phase change material nano-emulsions with melting points of 29 degrees C and 38 degrees C were tested at various flow rates and solar irradiance periods. The nano-emulsion improved the thermal-equivalent energy efficiency of the module to an average of 84.41% and a maximum of 89.23%, compared to 79.95% and 83.23% for the water-cooled system. However, the total exergy efficiency was lower with the nano-emulsion at 10.69% compared to 11.66% with water. The study also highlighted the importance of latent heat release within a narrow temperature range for better energy performance.
Article
Green & Sustainable Science & Technology
P. Jidhesh, T. V. Arjunan, N. Gunasekar
Summary: This research developed a thermal modeling for a semitransparent photovoltaic-thermal hybrid collector and validated the results experimentally. It was found that using nanofluid significantly improved efficiency, reduced temperature, and enhanced both electrical and thermal efficiency compared to traditional PV modules under the climatic conditions of Coimbatore, India.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Cherif Ould-Lahoucine, Hamza Ramdani, Driss Zied
Summary: An energetic and exergetic analysis was conducted on a hybrid photovoltaic-thermal solar collector with a rectangular channel circulating water-TiO2 nanofluid. Simulation results showed no substantial advantage of the water-TiO2 based hybrid collector over the water-based one. Additionally, a novel method for determining the height of the heat exchanger with a rectangular cross-section was proposed, showing a similar result to the one calculated using a different formula.
Article
Thermodynamics
Omar Rafae Alomar, Omar Mohammed Ali
Summary: The present study involved an exhaustive analysis of a hybrid photovoltaic thermal (PVT) system in North of Iraq, showcasing the significant impact of climate conditions on its efficiency. Energy and exergy analysis revealed that the system's thermal efficiency ranged from 25% to 58% and electrical efficiency ranged from 12% to 16%.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Energy & Fuels
Emin Acikkalp, Hakan Caliskan, Hiki Hong, Hongjie Piao, Dohyun Seung
Summary: In this paper, a photovoltaic-thermal (PVT) module based desiccant air-cooling system for buildings is analyzed using extended exergy analysis. The results show that extended exergy analysis provides different results from conventional exergy analysis in terms of exergy destruction and exergy efficiency. The exergy equivalent of capital has the highest portion, mainly due to the significant expenses of electricity consumption. Therefore, it is important to increase exergy efficiency and reduce exergy destruction.
Article
Energy & Fuels
Emin Acikkalp, Hakan Caliskan, Hiki Hong, Hongjie Piao, Dohyun Seung
Summary: In this study, a PVT module based desiccant air-cooling system for buildings is analyzed using extended exergy analysis, revealing differences in exergy destruction and efficiency compared to conventional analysis, with electricity consumption being the main contributor to exergy destruction.
Article
Energy & Fuels
Anmol Gupta, Sanjay Agrawal, Yash Pal
JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME
(2020)
Article
Thermodynamics
Sourav Diwania, Anwar S. Siddiqui, Sanjay Agrawal, Rajeev Kumar
Summary: This paper examines the performance of a PVT air collector with V-groove absorber theoretically and experimentally under different climate conditions in Ghaziabad city, India, in June 2019. The results show that the theoretical model aligns with the experimental results, achieving high electrical, thermal, and overall efficiencies.
HEAT AND MASS TRANSFER
(2021)
Article
Engineering, Electrical & Electronic
Arvind Kumar Yadav, V. K. Deolia, S. Agrawal
Summary: This study explores the resonant characteristics of a third order passive filter based qZSI, presents optimal parameter selection and controller design, achieves closed-loop stable control and disturbance rejection for input variations.
INTERNATIONAL JOURNAL OF ELECTRONICS
(2021)
Article
Engineering, Mechanical
Sourav Diwania, Anwar S. Siddiqui, Sanjay Agrawal, Rajeev Kumar
Summary: The study found that the Cu/water nanofluid outperformed the Al2O3/water nanofluid and pure water in terms of PVT performance. With a 2% volume concentration of Cu nanoparticles, there was a 4.98% and 5.23% increase in average electrical and thermal efficiencies, respectively. Furthermore, while tube diameter had minimal impact on performance, the thermo-electrical performance of the hybrid PVT collector significantly improved with the increase in the number of tubes.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2021)
Article
Energy & Fuels
Anmol Gupta, Sanjay Agrawal, Yash Pal
Summary: The performance analysis of the PV-TE-SWC system has been conducted and compared with a PV-TE air collector. The results show that the PV-TE-SWC system has significant advantages in terms of overall electrical efficiency and environmental energy gains, indicating its great potential for energy saving and emission reduction.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Thermodynamics
Anmol Gupta, Sanjay Agrawal, Yash Pal
Summary: This paper introduces a photovoltaic-thermoelectric system with a serpentine water collector to enhance the electrical, thermal, and exergy performance of the hybrid system. Compared to an air collector, the proposed PV-TE-SW collector shows better overall performance with higher electrical gain, electrical efficiency, and exergy efficiency. The design parameters such as collector dimensions, mass flow rate, and fluid inlet temperature greatly influence the performance of the PV-TE-SW collector.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2022)
Review
Energy & Fuels
Harish Kumar Ghritlahre, Manoj Verma, Jyoti Singh Parihar, Dilbag Singh Mondloe, Sanjay Agrawal
Summary: This study evaluates the energy and exergy investigations into various forms of solar air heaters and identifies research gaps for future research.
Article
Energy & Fuels
Jyoti Singh Parihar, Satish Kumar, Lalit Kumar, Yogesh Kumar, Harish Kumar Ghritlahre, Manoj Verma, Ajay Kumar Gupta, Sanjay Agrawal, Shiena Shekhar
Summary: This study conducted an experiment on a novel solar dryer in India for drying banana slices. The results showed that forced convection drying was the most efficient method.
Proceedings Paper
Materials Science, Multidisciplinary
Pankaj K. Gupta, Abhishek Misal, Sanjay Agrawal
Summary: The paper presents the development and testing of a low-cost reflective panel type solar cooker. The results show that the panel type cooker exhibits slightly lower temperatures in the cooking pots compared to the box type cooker, but with fewer modifications, it can become a low-cost competitor to the box type cooker.
MATERIALS TODAY-PROCEEDINGS
(2021)
Article
Energy & Fuels
Sourav Diwania, Sanjay Agrawal, Anwar S. Siddiqui
Summary: This study implemented three different optimisation techniques to optimise the parameters of SCGPVT module, with WOA algorithm achieving the highest exergy efficiency and fastest convergence rate.
INTERNATIONAL JOURNAL OF AMBIENT ENERGY
(2021)
Proceedings Paper
Computer Science, Interdisciplinary Applications
Sourav Diwania, Anmol Gupta, Anwar S. Siddiqui, Sanjay Agrawal
INTELLIGENT COMPUTING TECHNIQUES FOR SMART ENERGY SYSTEMS
(2020)
Proceedings Paper
Computer Science, Interdisciplinary Applications
Anmol Gupta, Sourav Diwania, Sanjay Agrawal, Anwar S. Siddiqui, Yash Pal
INTELLIGENT COMPUTING TECHNIQUES FOR SMART ENERGY SYSTEMS
(2020)
Review
Energy & Fuels
Sourav Diwania, Sanjay Agrawal, Anwar S. Siddiqui, Sonveer Singh
INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING
(2020)
Proceedings Paper
Materials Science, Multidisciplinary
Subhash Chandra, Arvind Yadav, Sanjay Agrawal, Durg Singh Chauhan
MATERIALS TODAY-PROCEEDINGS
(2020)
Article
Engineering, Multidisciplinary
Amit Kumar Dash, Sanjay Gairola, Sanjay Agrawal, Shweta Shukla
INTERNATIONAL JOURNAL OF MATHEMATICAL ENGINEERING AND MANAGEMENT SCIENCES
(2019)
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.
