Article
Thermodynamics
Yassir A. Alamri, Ibrahim Albaik, Saad Mahmoud, Raya Al-Dadah, Mohamed A. Ismail
Summary: The paper developed a concentrated photovoltaic system using multi-junction solar cells with a high optical efficiency and overall energy conversion efficiency. By simulating active cooling and an Organic Rankine Cycle system, the study aimed to maximize solar energy utilization for providing electricity to buildings in Saudi Arabia, which has abundant solar radiation.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Mussad Alzahrani, Asmaa Ahmed, Katie Shanks, Senthilarasu Sundaram, Tapas Mallick
Summary: This study investigates the differences between theoretical and experimental optical characterization results of a Fresnel Lens - silicon on glass (SOG) as a primary optical component for ultra-high concentration photovoltaic (UHCPV) design. The research shows a strong agreement between theoretical and experimental results for multi-junction solar cells, with discrepancies ranging from 2% to 6%. Additionally, a theoretical analysis is performed to estimate optical losses and their impact on optical efficiency and concentration ratio.
Article
Green & Sustainable Science & Technology
Arvind Singhy, Robin Thakur, Raj Kumar
Summary: This paper evaluates the performance of standalone thermal system and cogeneration PVT system under a two-stage linear Fresnel lens system. The study shows that with an increase in concentration, the electrical efficiency of the system decreases, but the output power increases.
Article
Thermodynamics
Warga Chegeno Meraje, Chang-Chiun Huang, Jagadish Barman, Chao-Yang Huang, Chung-Feng Jeffrey Kuo
Summary: This study designed and verified a Fresnel lens-based solar concentrator integrated with a nanofluid spectral splitting photovoltaic thermal system. The optical loss was minimized by increasing the surface area and decreasing the optical path length. The spectral transmittance of the synthesized nanofluid was measured experimentally and a dynamic modeling energy balance equation was computed using MATLAB programming. The findings highlight the potentials of employing a low-cost ZnO nanofluid in a concentrated photovoltaic thermal system for full spectrum utilization.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Optics
Guohan Gao, Heng Shi, Lihua Wang, Dun Liu, Jiong Wang, Junfeng Du, Jiang Bian, Bin Fan, Hu Yang
Summary: This study focuses on large aperture high diffraction efficiency off-axis Fresnel lens and presents the fabrication of a 4-level off-axis Fresnel lens with high diffraction efficiency. The influence of alignment errors on the diffraction efficiency distribution is analyzed and discussed.
Article
Green & Sustainable Science & Technology
Kexin Zhang, Ying Su, Haiyu Wang, Qian Wang, Kai Wang, Yisen Niu, Jifeng Song
Summary: Fresnel lenses are lenses that can concentrate sunlight up to thousands of times and their concentrated flux can be studied using experimental or simulation methods. This study developed an experimental system for measuring the concentrated flux density of Fresnel lenses and confirmed that the flux level of the lenses can reach 5000 suns.
Article
Energy & Fuels
Duc Tu Vu, Ngoc Hai Vu, Seoyong Shin, Thanh Tuan Pham
Summary: This article introduces a new optical device - cylindrical Fresnel lenses, historically used in lighthouse concentrators, for application in the field of concentrator photovoltaic. The solar concentrator has the ability to distribute focal points over an arc at any light incidence and has a high acceptance angle. Through simulation and experimentation, the convergence feature and current gain improvement of the new lens design were confirmed.
Article
Computer Science, Information Systems
Sarah El Himer, Mariya Ouaissa, Mariyam Ouaissa, Junaid Rashid, Jungeun Kim
Summary: The first part of the study focuses on the development and evaluation of a 3D solar concentrator with a flat circular Fresnel lens and a hyperbolic concentrator. The second part introduces a cost-effective method using IoT to remotely monitor and assess the operation of a photovoltaic plant.
Article
Energy & Fuels
Jawad Sarwar, Muhammad Rizwan Shad, Arshmah Hasnain, Farman Ali, Konstantinos E. Kakosimos, Aritra Ghosh
Summary: This study investigated the temperature regulation and electrical output of a concentrated photovoltaic system coupled with a phase change material system, comparing it with a single sun crystalline photovoltaic system. Results showed that the CPVPCM system with S-series salt performed the best overall, consistently producing more power in different months compared to other phase change materials.
Article
Energy & Fuels
N. Vignesh, U. C. Arunachala, K. Varun
Summary: This study explores the use of a refractive Fresnel lens for electrical and thermal energy through an irradiance bi-focusing method. The experiment uses a real-size polycrystalline PV module and a passive cooling technique to maintain its surface temperature below 80 degrees Celsius. The concentrator system increases the power output of the PV module by more than double, and the thermal collector performs similarly to a conventional solar water heater.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Energy & Fuels
Duc Tu Vu, Hoang Vu, Ngoc Hai Vu
Summary: A new design for concentrated photovoltaics (CPV) system was proposed, mimicking the structure of crustacean's eyes to enhance light uniformity and optical efficiency. By splitting the light beam into small channels and redistributing it, higher uniformity and optical efficiency can be achieved.
Article
Energy & Fuels
Yizhou Zhu, Benchi Ma, Baichuan He, Xinyu Ma, Dengwei Jing
Summary: Efficiently converting solar radiation into energy sources for storage and consumption is an urgent issue. A new design is presented where a liquid spherical lens is used as the secondary optical element in a concentrating solar system, collecting radiation energy through spectral beam splitting. This design improves the heat dissipation of solar cells and increases the operating temperature of the electrolyzer, achieving higher solar-to-hydrogen efficiency.
Article
Energy & Fuels
Mengdi Liu, Udo Romer, Nicholas J. Ekins-Daukes, Alison Lennon
Summary: This study compares the impact of different light management finger designs on the optical performance of concentrated photovoltaic (CPV) systems. The results show that shaped, light diverting metal fingers can significantly improve the optical efficiency of the system.
PROGRESS IN PHOTOVOLTAICS
(2022)
Article
Thermodynamics
Hai Wang, Mengjie Song, Haoteng Li, Jiayu Xiao, Jin Huang
Summary: This study demonstrates the design and optical performance analysis of a fixed linear-focus Fresnel lens solar system (FLFS) with three different tracking methods to reduce end loss. The simulation results indicate that the FLFS coupling curved slip rail has significant advantages and can improve optical efficiency at almost all sunlight incident angles.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2022)
Article
Energy & Fuels
Haoteng Li, Jin Huang, Hai Wang, Mengjie Song
Summary: Through analyzing the receiver parameters of the FLFS system, this study discusses an effective method to address the issue of optical end loss in linear solar concentrators. The results demonstrate that adjusting the receiver position and solar declination angle can improve the optical efficiency of the system.
