Performance of silicone-on-glass Fresnel lenses in EMCORE's Gen 3 high-concentration concentrator photovoltaic system

2012 ◽  
Author(s):  
James S. Foresi ◽  
Rick Hoffman ◽  
David King ◽  
Patrick Ponsardin
Keyword(s):  
Photovoltaic System ◽  
High Concentration ◽  
Fresnel Lenses

scholarly journals Improvement of BIPV Efficiency by Application of Highly Reflective Surfaces at the Building Envelope

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7424
Author(s):  
Dominika Knera ◽  
Pablo Roberto Dellicompagni ◽  
Dariusz Heim
Keyword(s):  
Solar Irradiance ◽  
Numerical Approach ◽  
Building Envelope ◽  
Photovoltaic System ◽  
Solar Irradiation ◽  
High Concentration ◽  
Low Concentration ◽  
Simulation Techniques ◽  
Fresnel Lenses ◽  
Reflective Surfaces

The use of concentrated solar irradiation for the improvement of electric generation improvement has been implemented on different scales, mainly in photovoltaic systems. High-concentration Fresnel lenses are widely chosen for this approach in large installations, while low-concentration systems are rather applied in medium-low scales. For the latter, the improvement on electric performance was revealed, even when no solar tracking was implemented. The presented work aims to analyse a low-concentration photovoltaic installation by a numerical approach. First, the reflective surfaces were designed geometrically considering the optimal slope determined for each month. Subsequently, different simulation techniques were used separately for prediction of solar irradiation and energy production. Three criteria were selected to analyze power generation: the highest increase in total annual solar irradiance on panels with reflective surfaces, the highest total annual solar irradiance collected, and the optimal slope of panels for the entire year. The increase in energy was found to not exceed 10% in the winter months. Whereas in the spring and summer months the energy improvement is about 15–20%. Moreover, it was observed that the temperature of the proposed concentration photovoltaic system increased significantly, reaching more than 90 °C, while for traditional PV panels it did not exceed 75 °C.

scholarly journals Performance Analysis of a Prototype High‐Concentration Photovoltaic System Coupled to Silica Optical Fibres

2021 ◽  
Author(s):  
Giuseppe Mattia Lo Piccolo ◽  
Adriana Morana ◽  
Aziz Boukenter ◽  
Sylvain Girard ◽  
Youcef Ouerdane ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Photovoltaic System ◽  
Optical Fibres ◽  
High Concentration

A Novel High Concentration Fresnel Lens as a Solar Concentrator

2021 ◽  
pp. 1-29
Author(s):  
Kuldeep Awasthi ◽  
Desireddy Shashidhar Reddy ◽  
Mohd. Kaleem Khan
Keyword(s):  
Optical Axis ◽  
Spherical Aberration ◽  
Spherical Surface ◽  
Fresnel Lens ◽  
High Concentration ◽  
Aperture Diameter ◽  
Convex Lens ◽  
Flat Base ◽  
Fresnel Lenses ◽  
Outer Vertex

Abstract This paper describes the design methodology for a novel Fresnel lens. The original Fresnel lens is obtained from a plano-convex lens, whose spherical surface is split into a number of divisions (called facets), collapsed onto the flat base. Thus, all the facets of the original Fresnel lens have the same radius as that of the plano-convex lens. The proposed design aims to achieve better ray concentration and reduced spherical aberration than the original Fresnel lens by constructing spherical facets with unequal radii. The centers and radii of facets are constrained so that the ray refracted from the bottom vertex of each facet on one side of the optical axis and the ray refracted from the outer vertex of the corresponding facet on the other side of the optical axis must intersect at the focal plane. The proposed lens design has resulted in a 275% gain in the concentration ratio and a 72.5% reduction in the spherical aberration compared to the original lens of the same aperture diameter and number of facets. The performance of both novel and original Fresnel lenses when used as solar concentrators with a conical coil receiver is evaluated. The novel Fresnel lens led to increased heat gain and resulted in a compact solar collector design.

Optimal design of the reflective curved surface on the high concentration photovoltaic system

2021 ◽  
Vol 2021.74 (0) ◽  
pp. B42
Author(s):  
Chang-Jun LIN ◽  
Lei GAO ◽  
Chaobin DANG ◽  
Yuhi FUJII ◽  
Koshi TANAKA
Keyword(s):  
Optimal Design ◽  
Photovoltaic System ◽  
Curved Surface ◽  
High Concentration

Theoretical and experimental study on the uniformity of reflective high concentration photovoltaic system with light funnel

2019 ◽  
Vol 133 ◽  
pp. 893-900 ◽  
Author(s):  
Cheng-Long Wang ◽  
Jing-Hu Gong ◽  
Jia-Jie Yan ◽  
Yuan Zhou ◽  
Duo-Wang Fan
Keyword(s):  
Experimental Study ◽  
Photovoltaic System ◽  
High Concentration

scholarly journals Theoretical Investigation of the Temperature Limits of an Actively Cooled High Concentration Photovoltaic System

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1902 ◽  
Author(s):  
Asmaa Ahmed ◽  
Katie Shanks ◽  
Senthilarasu Sundaram ◽  
Tapas Kumar Mallick
Keyword(s):  
Solar Cell ◽  
Concentration Ratio ◽  
Photovoltaic System ◽  
Thermal System ◽  
Outlet Temperature ◽  
Water Mixture ◽  
High Concentration ◽  
Cell Temperature ◽  
Photovoltaic Thermal System ◽  
Different Types

Concentrator photovoltaics have several advantages over flat plate systems. However, the increase in solar concentration usually leads to an increase in the solar cell temperature, which decreases the performance of the system. Therefore, in this paper, we investigate the performance and temperature limits of a high concentration photovoltaic Thermal system (HCPVT) based on a 1 cm2 multi-junction solar cell subjected to a concentration ratio from 500× to 2000× by using three different types of cooling fluids (water, ethylene glycol and water mixture (60:40), and syltherm oil 800). The results show that, for this configuration, the maximum volumetric temperature of the solar cell did not exceed the manufacturer’s recommended limit for the tested fluids. At 2000× the lowest solar cell temperature obtained by using water was 93.5 °C, while it reached as high as 109 °C by using syltherm oil 800, which is almost equal to the maximum operating limit provided by the manufacturer (110 °C). Overall, the best performance in terms of temperature distribution, thermal, and electrical efficiency was achieved by using water, while the highest outlet temperature was obtained by using syltherm oil 800.

Installation and Operation of Southern Nevada Water Authority High Concentration Amonix Multi-Junction System

2010 ◽  
Author(s):  
Gary Wood ◽  
Aaron Sahm ◽  
Rick Hurt ◽  
Robert Boehm ◽  
Kenneth W. Stone
Keyword(s):  
Control Systems ◽  
Tracking Control ◽  
Photovoltaic System ◽  
Basic Operation ◽  
High Concentration ◽  
Southern Nevada ◽  
Pv Modules ◽  
Southern Nevada Water Authority

The Southern Nevada Water Authority contracted with Amonix, Inc. in 2008 to procure 220 kWdc of their latest generation multi-junction cell High Concentration Photovoltaic system. This paper describes the installation of the six HCPV systems including the design layout of the field, installation of the foundations, the PV modules, and tracking control systems. In addition, the basic operation and features of the Amonix HCPV system are discussed, along with data showing the performance of each system since the start of operation.

Development of the high concentration III-V photovoltaic system at INER, Taiwan

2009 ◽  
Vol 34 (8) ◽  
pp. 1931-1933 ◽  
Author(s):  
Cherng-Tsong Kuo ◽  
Hwa-Yuh Shin ◽  
Hwen-Fen Hong ◽  
Chih-Hung Wu ◽  
Cheng-Dar Lee ◽  
...  
Keyword(s):  
Photovoltaic System ◽  
High Concentration
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