Concentrating PV system based on spectral separation of solar radiation

Vincenzi, D.; Busato, Alessandro; Stefancich, Marco; Martinelli, G.

doi:10.1002/pssa.200824468

Cited by 45 publications

(25 citation statements)

References 4 publications

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“…Numerous SSS designs using holographic [3][4][5][6] or dichroic [7][8][9][10] optical filters to spatially isolate solar spectral bands have been proposed. Holographic optical elements (HOE) are a versatile, inexpensive option for SSS, which can: achieve high diffraction efficiency, be used in transmission or reflection geometries, incorporate concentration, and be customized for individual designs by modifying diffracted spectral bands and dispersion characteristics [11][12][13][14] .…”

Section: Introductionmentioning

confidence: 99%

Environmental stability study of holographic solar spectrum splitting materials

Chrysler

Pelaez

et al. 2016

SPIE Proceedings

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In this study the impact of outdoor temperature variations and solar illumination exposure on spectral filter material and holographic optical elements is examined. Although holographic components have been shown to be useful for solar spectrum splitting designs, relatively little quantitative data exist to demonstrate the extent to which these materials can withstand outdoor conditions. As researchers seek to investigate practical spectrum splitting designs, the environmental stability of holographic materials should be considered as an important factor. In the experiment presented, two holographic materials, Covestro Bayfol HX photopolymer and dichromated gelatin, and 3M reflective polymer filter materials are exposed to outdoor conditions for a period of several months. The environmental effect on absorption, spectral and angular bandwidth, peak efficiency, and Bragg matching conditions for the holograms are examined. Spectral bandwidth and transmittance of the 3M reflective filter material are also monitored. Holographic gratings are recorded, measured, and mounted on glass substrates and then sealed with a glass cover plate. The test samples are then mounted on a photovoltaic panel to simulate realistic temperature conditions and placed at an outdoor test facility in Tucson, Arizona. A duplicate set of holograms and 3M filter material is stored as a control group and periodically compared over the test period.

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Section: Introductionmentioning

confidence: 99%

Environmental stability study of holographic solar spectrum splitting materials

Chrysler

Pelaez

et al. 2016

SPIE Proceedings

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“…However, the first experimental demonstration was done by Moon et al by applying a 17-layer dichroic reflector stack [41]. More recently, there have been new investigations on spectral beam splitting systems induced by highly accurate thin film deposition technologies currently available [42][43][44][45].…”

Section: Spectrum Splitting By Geometrical Assemblymentioning

confidence: 99%

Spectrally-Selective Photonic Structures for PV Applications

et al. 2010

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Abstract:We review several examples of how spectrally-selective photonic structures may be used to improve solar cell systems. Firstly, we introduce different spectrally-selective structures that are based on interference effects. Examples shown include Rugate filter, edge filter and 3D photonic crystals such as artificial opals. In the second part, we discuss several examples of photovoltaic (PV) concepts that utilize spectral selectivity such as fluorescence collectors, upconversion systems, spectrum splitting concepts and the intermediate reflector concept. The potential of spectrally selective filters in the context of solar cells is discussed.

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“…Generally, high solar irradiance comes with higher ambient temperatures especially in climatic zones such as Pakistan. For such zones, energy utilization efficiency of PV systems can be improved through different methods for instances: multijunction cells [4], optical frequency shifting [5], multiple generation cells [6], hot carrier cells [7], and concentration photovoltaic system [8]. However, such methods have not been yet commercialized because of their complexity and high cost.…”

Section: Introductionmentioning

confidence: 99%

Performance Investigation of Air Velocity Effects on PV Modules under Controlled Conditions

Ali

Iqbal

Sheikh

et al. 2017

International Journal of Photoenergy

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Junction temperature of PV modules is one of the key parameters on which the performance of PV modules depends. In the present work, an experimental investigation was carried out to analyze the effects of air velocity on the performance of two PV modules, that is, monocrystalline silicon and polycrystalline silicon under the controlled conditions of a wind tunnel in the presence of an artificial solar simulator. The parameters investigated include the surface temperature variation, power output, and efficiency of PV modules under varying air velocity from near zero (indoor lab. conditions) to 15 m/s. Additionally, the results were also determined at two different module angular positions: at 0°angle, that is, parallel to air direction and at 10°a ngle with the direction of coming air to consider the effects of tilt angles. Afterwards, the thermal analysis of the modules was performed using Ansys-Fluent in which junction temperature and heat flux of modules were determined by applying appropriate boundary conditions, such as air velocity, heat flux, and solar radiation. Finally, the numerical results are compared with the experiment in terms of junction temperatures of modules and good agreement was found. Additionally, the results showed that the maximum module temperature drops by 17.2°C and the module efficiency and power output increased from 10 to 12% with increasing air velocity.

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Concentrating PV system based on spectral separation of solar radiation

Cited by 45 publications

References 4 publications

Environmental stability study of holographic solar spectrum splitting materials

Environmental stability study of holographic solar spectrum splitting materials

Spectrally-Selective Photonic Structures for PV Applications

Performance Investigation of Air Velocity Effects on PV Modules under Controlled Conditions

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