&lt;title&gt;200-W solar energy delivery with optical fiber bundles&lt;/title&gt;

Liang, Dawei; Nunes, Y.; Monteiro, Luís; Monteiro, M. L.; Collares-Pereira, Manuel

doi:10.1117/12.279217

Cited by 24 publications

(17 citation statements)

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“…However, sometimes, solar collectors optically designed for tiny areas are coupled to optical fibers [8][9][10], with the advantage of an optical coupling with a circular receiving area, corresponding to the fiber core. On the contrary, the PV cell is typically squared, so it requests a secondary optics to reshape the image and to improve light distribution uniformity.…”

Section: Concentrating Photovoltaics and Fiber-coupled Systemsmentioning

confidence: 99%

Museum Illumination by Sunlight: A Case Study Using PV Cells and Optical Fibers

Sansoni

Fontani

Francini

2014

Sustainable Indoor Lighting

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Section: Concentrating Photovoltaics and Fiber-coupled Systemsmentioning

confidence: 99%

Museum Illumination by Sunlight: A Case Study Using PV Cells and Optical Fibers

Sansoni

Fontani

Francini

2014

Sustainable Indoor Lighting

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“…Taking into account the significant challenge of manufacturing this bundle, we considered it sufficient to prove the fused bundle concept and thus avoid the investment of new tooling. Considering this constraint, bundles of 144 fibres (1Á8 mm f) were manufactured, which is a number much larger than those considered for successful bundles referenced in literature as far as we are concerned, 3,4,7,16 providing a bundle diameter of 21Á6 mm. As a consequence, the size of the rod and the primary dish are also limited by this constraint.…”

Section: The Fibre Bundlementioning

confidence: 99%

“…M any concepts to use optical fibres with concentrated light have been envisaged and proposed in the past [1][2][3][4][5][6][7][8] not only for photovoltaic 5,6 but also for thermal power generation 7 and other applications such as lighting systems 8 or pumping of solar lasers. 4 Those works have demonstrated the technical viability of fibres to collect and transmit concentrated light power.…”

Section: Introductionmentioning

confidence: 99%

“…The optical waveguide system, if properly designed, can transport the light beam, provide a uniform flux and share it between the cells. Liang et al 3,4 developed flexible fibre-optic bundles consisting of 19 optical fibres of 1Á5 mm diameter each, by polishing the end of the fibres to get hexagonal cross sections. Since this procedure is too expensive to be used for PV applications, we present two alternatives with the objective of manufacturing large bundles at low cost.…”

Section: Introductionmentioning

confidence: 99%

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The PV‐FIBRE concentrator: a system for indoor operation of 1000X MJ solar cells

Antón

Silva

Sala

et al. 2007

Progress in Photovoltaics

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This paper describes the overall design and experimental results obtained with the PV-FIBRE concentrator system (CPV). This system uses a parabolic dish to collect and concentrate the sunlight which is then further guided by a transparent rod and finally by individual short fibres. Eventually, the individual fibres are connected to single cells which are located indoors. Dual-junction III-V-based solar cells with an efficiency of 30% and operating at 1000Â are applied in the PV-FIBRE system. This new system approach allows a suitable optical and electrical interconnection in order to reduce the losses and the indoor operation of the cell receiver. All elements of the CPV system (collector, tracker, transmission rod, cells, fibre bundles, and cooling circuit) have been manufactured according to main design requirements and have been evaluated separately. Finally, the PV-FIBRE CPV system has been installed in Madrid and tested under real operation conditions. The system has demonstrated an optical efficiency of 62% is feasible, providing homogeneous illumination to the cells. Therefore, this concept can lead to overall efficiencies exceeding 20% when combined with MJ solar cells. In this paper we report on the main achievements, identified problems as well as lessons learned and future research lines to improve the system performance.

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“…al. in the early 80th (Cariou et al, 1982;Cariou et al, 1985) and others (Khatri et al, 1993;Nakamura et al, 1995;Liang et al, 1997;Peill and Hoffmann, 1997;Feuermann and Gordon, 1998a). However, these attempts have not yet been utilized successfully in major energy consuming applications such as the power generation industry.…”

Section: Introductionmentioning

confidence: 99%

The TROF (tower reflector with optical fibers): a new degree of freedom for solar energy systems

2001

Fuel and Energy Abstracts

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-The integration of optical fibers into solar energy systems requires a tradeoff between the cost, attenuation, and a limited flux carrying capability (due to limited Numerical Aperture) on one hand, and the flexibility in light distribution on the other hand. This paper presents a novel approach that minimizes the length of fibers in the system while fully utilizing the flexibility advantage. Optical fibers have been steadily improving and their cost has been declining as a result of the proliferation of their use in communication, and more recently in the lighting industry. The use of fibers in concentrating solar thermal systems has potential advantages of providing unprecedented flexibility in the final concentration and the receiver design. A central receiver system based on the Tower Reflector with Optical Fibers (TROF) is presented as a case study in a comparison between conventional concepts of solar thermal power generation, and new concepts employing optical fibers. New approaches to thermal conversion utilizing the flexibility of a fiberbased system are presented, non-isothermal high temperature receivers and distributed receivers. An approximate performance and cost analysis that assumes mass produced solar-optimized fibers is presented. The effects of system size and several fiber types are discussed. The results show that the use of current optical fibers is not competitive for solardriven electricity generation systems. The analysis points to research and development directions that could lead to costeffective TROF and other optical fiber-based systems in the future.

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<title>200-W solar energy delivery with optical fiber bundles</title>

Cited by 24 publications

References 0 publications

Museum Illumination by Sunlight: A Case Study Using PV Cells and Optical Fibers

Museum Illumination by Sunlight: A Case Study Using PV Cells and Optical Fibers

The PV‐FIBRE concentrator: a system for indoor operation of 1000X MJ solar cells

The TROF (tower reflector with optical fibers): a new degree of freedom for solar energy systems

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