Solar energy concentration uniformity research
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By utilizing concentrating mirrors to harness solar energy in a potential field test, a heating power of 2.5 kW would facilitate graphene synthesis, consuming less than 1 kWh of solar energy.
Sequential Bayesian-optimized graphene synthesis by direct solar ...
By utilizing concentrating mirrors to harness solar energy in a potential field test, a heating power of 2.5 kW would facilitate graphene synthesis, consuming less than 1 kWh of solar energy.
Design and performance evaluation of a novel CPV-T
In contrast with previous research works, the main innovation of this study is that a brand new solar concentrated PV-thermal (CPV-T) system using both nano-fluid spectrum filter (NSF) and compact multi-mirror concentrator is proposed, which can reach a relatively higher solar concentrating uniformity.
Progress in research and development of phase change materials …
Concentrated solar power (CSP) technologies are seen to be one of the most promising ways to generate electric power in coming decades. However, due to unstable and intermittent nature of solar energy availability, one of the key factors that determine the development of CSP technology is the integration of efficient and cost …
Research Paper Analysis of ultra-High concentration solar cells ...
This approach can potentially revolutionize how we optimize energy output and ensure the longevity of multi-junction solar cells, propelling them toward higher levels of efficiency and reliability in the realm of concentrated solar energy systems. As research continues to explore and refine this innovative cooling technique, it holds the ...
Design and testing of a uniformly solar energy TIR-R concentration ...
In this paper, total internal reflection-refraction (TIR-R) concentration (U-TIR-R-C) lens module were designed for uniformity using the energy configuration method to eliminate hot spots on the surface of solar cell and increase conversion efficiency.
Thermodynamic and optical analyses of a hybrid solar CPV/T …
The MCRT method is used to simulate the solar concentrating processes of the proposed CPV/T system. The simulation results reveal that the uniformity of solar energy flux density distribution on the solar panel is high. The relationships of key structural and optical parameters of the CPV/T system are analyzed.
Optimization and analysis of different extension strategies of the …
1 · η ref is the reference electrical efficiency of photovoltaic cells at the reference photovoltaic cell temperature and the reference solar concentrated irradiance G ref = …
Advanced Energy Materials
1 · Although encouraging progress in spin-coated small-area organic solar cells (OSCs), reducing efficiency loss caused by differences in film uniformity and …
Numerical Analysis on the Performance of High Concentration ...
Due to the uneven energy flow density at high concentration of solar concentrators, it is of great significance to maintain cell temperature uniformity. Based on high-power …
Performance analysis of a low concentrated photovoltaic system …
At present, popular emerging energy sources include solar, wind, geothermal, etc. Solar energy has gradually become the most potential emerging energy source due to its advantages of renewable energy and simple access methods [1, 2]. Solar energy utilization technologies mainly include photovoltaics and solar thermal [3, 4].
Characterisation and impact of non-uniformity on multi-junction solar …
Results show that the electrical performance of the solar cells depends on the spatial and spectral profiles. The present work introduces a procedure to characterise and evaluate the impact of non-uniformities on the output of multi-junction solar cells.
Review of Research Progress on Concentrated Solar Energy …
Among the concentrated solar energy systems, ... indicating that the integrated system has significant potential in improving solar energy utilization. The research of Aguilar-Jiménez et al. 74 also demonstrated the cost-effectiveness of the hybrid system. The equilibrium energy cost of the hybrid system ($0.524/kWh) was estimated …
Progress in heat transfer research for high-temperature solar …
1. Introduction. Solar energy technologies have unprecedented potential to eliminate the reliance of the global economy on fossil fuels [1], [2].Among them, solar thermal systems are distinct by making use of the complete solar spectrum available on Earth, and by being compatible with a broad range of technical applications including …
Design and experimental study of a solar CPV system using …
The optical estimate results of the CPV-T system reveal a relatively high solar concentrating uniformity. The solar tracking deviation evaluation results show that when the north-south tracking deviation is less than 0.3°, the optical efficiency of the CPV-T system can be greater than 0.834.
Optics for concentrating photovoltaics: Trends, limits and ...
Concentrating photovoltaic (CPV) systems are a key step in expanding the use of solar energy. Solar cells can operate at increased efficiencies under higher solar concentration and replacing solar cells with optical devices to capture light is an effective method of decreasing the cost of a system without compromising the amount of solar …
Comparative Study on Heat Flux and Temperature Distribution
Linear Fresnel collector system as main solar energy collecting technology is widely studied. The secondary reflector has significant influence on the heat flux distribution on the linear Fresnel collector. In this work, the heat flux and temperature distribution on linear Fresnel collector is compared with different secondary reflectors of …
Concentrated solar energy applications using Fresnel lenses: A …
Solar energy concentration technology using Fresnel lens is an effective way to make full use of sunlight. This paper makes a review about the recent …
Improvement in the Flux Uniformity of the Solar Dish …
The research showed that the redistribution effect of the convex quartz window on the solar radiation can also improve the uniformity of the flux distribution on
Novel design and thermodynamic analysis of a solar concentration …
A higher solar concentrating uniformity on solar panel surface can increase the photo-electric transformation efficiency [[9], [10], [11]]. Moreover, as solar cells are wavelength-dependent, different spectral response (SR) effects exist for different kinds of cells [12]. That means only part of the solar energy with full-wave band can be used ...
Design and thermodynamic analysis of a novel solar CPV and …
The simulation results of concentrated solar energy distribution performances on the left PV cell and solar receiver tube surfaces are shown in Fig. 6 (a) and (b). The illuminance map presented in Fig. 6 (a) demonstrates that the solar concentrating uniformity on the solar panels is relatively high. On the thermal receiver …
Thermodynamic and optical analyses of a hybrid solar CPV/T …
A novel hybrid solar CPV/T system with spectral beam splitter is proposed.. The proposed CPV/T system has a high solar concentrating uniformity for PV utilization. • The proposed CPV/T system has a higher overall energy efficiency than …
Design and testing of a uniformly solar energy TIR-R …
In this paper, total internal reflection-refraction (TIR-R) concentration (U-TIR-R-C) lens module were designed for uniformity using the energy configuration method to eliminate hot spots on the surface of solar cell …
Numerical Investigation of Solar Flux Homogeneity and Intensity …
Renewable energy has proven to be a successful replacement of fossil fuels. Solar energy can be used in various aspects of life. In particular, the concentrated solar energy can be used to produce electricity on a domestic and commercial scale. Nowadays, solar heating technology is widely employed for different domestic and …
Design and thermodynamic analysis of a novel solar CPV and …
Normally, a high solar concentrating uniformity can increase the photoelectric conversion efficiency of solar panels. And PV systems have a spectral wavelength requirement. In a specific spectral wavelength range, the solar cell has a high responsiveness. ... 2021, International Journal of Energy Research. View all citing …
Theoretical and experimental study on the uniformity of reflective …
The efficiency of GaAs solar cell was significantly reduced resulting from non-uniformity of energy flux-density on receiver surface, and damage of solar cells …
High-uniformity solar concentrators for photovoltaic systems
A novel two-stage solar collector system designed for the National Renewable Energy Laboratory (NREL) is presented here. By tailoring the radial profile of …
High flux solar simulators for concentrated solar thermal research…
Apart from electricity generation, other advanced applications of concentrating solar energy focus on the energy carrier production and raw materials processing [7]. The production of solar fuels, including hydrogen, is based on H 2 O/CO 2 splitting and decarbonization processes (cracking, reforming, and gasification of …
A review of advanced architectural glazing technologies for solar ...
Efficient management of solar radiation through architectural glazing is a key strategy for achieving a comfortable indoor environment with minimum energy consumption. Conventional glazing consisting of a single or multiple glass pane(s) exhibits high visible light transmittance and solar heat gain coefficient, which can be a double …
Dynamic analysis of a concentrating photovoltaic/concentrating solar ...
Wang G, Yao Y, Chen Z, et al. Thermodynamic and optical analyses of a hybrid solar CPV/T system with high solar concentrating uniformity based on spectral beam splitting technology. Energy, 2019, 166: 256–266
Tunable high-flux solar simulator with enhanced uniformity for ...
High-flux solar simulator (HFSS) represents a vital category of controllable platforms designed to provide artificial solar radiation for reproducible studies on concentrated solar energy utilization. To simulate the performance of outdoor solar concentrators, two key metrics, namely, the range and uniformity of the deliverable …
Effect of non-uniform illumination on performance of solar ...
Solar thermoelectric generators (STEGs) are heat engines which can generate electricity from concentrated sunlight. The non-uniform illumination caused by the optical concentrator may affect the performance of solar thermoelectric generators. In this paper, a three-dimensional finite element model of solar thermoelectric generators is …