Transport of solar energy with optical fibres

Cariou, Jean-Michel; Dugas, J.; Martin, L.

doi:10.1016/0038-092x(82)90076-7

Cited by 73 publications

(39 citation statements)

References 4 publications

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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: 89%

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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Section: Introductionmentioning

confidence: 89%

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 procedure maximizes concentration for any specified number of mirror elements, and for acceptance angle, with the height of the concentrator or the reflector area as a constraint. The use of concentrated solar energy and its transport in optical fibers was early studied by Cariou et al [13]. Transmission properties of fibers as well as geometrical conditions of the association between fibers and concentrator were investigated: from which it was shown that modules where one fiber is associated with a small parabolic mirror might supply 2 W with efficiency greater than 70%, whereas the concentration on the exit end of a 10 m long fiber may exceed 3000.…”

Section: Solar Concentrators and Lscsmentioning

confidence: 99%

A new design of luminescent solar concentrator and its trial run

Chen

Abdul‐Rahman

Rao

2010

Int. J. Energy Res.

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SUMMARYNormal luminescent solar concentrators (LSC) have a great limitation in their light transportation because the light produced by the recently reported LSCs is not a point light source. In order to enable LSCs to use optical fibers as the effective remote light transport media, a new design of LSC, which uses three color luminescent fibers for solar absorption and uses clear optical fiber bundles to transport the absorbed sunlight into a remote place, is fabricated and tested. Radiation flux ratios with a mean value of 5.7%, the luminous flux up to 114.1 lumens, and the light efficiency of 0.56% have been achieved during the trial run. The luminous efficacy as 0.643 lm W À1 is higher than that of combusting candles (0.3 lm W À1 ) but lower than that of the incandescent light bulbs (16-40 lm W À1). Further, since the sun light is free, different from electrical light sources, the luminous efficacy of the new LSC does not result in any electricity consumption when it is under operation. A color analysis and spectrum test proves that the light produced by the new LSC performs a great match to the direct sun light in color.

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“…Owing to the unavailability of high-quality optical fibres and the high cost of their design, this project limited itself to theoretical analysis only. With the availability of possible fibre-optic techniques today, solar energy can be transmitted by highquality optical fibres of large core diameter and large numerical aperture (NA) [2,4,5]. The concept of transmission of concentrated solar energy via fibre-optic bundles (FOBs) provides flexible solutions for numerous implementations such as solar lighting, solar power generation, solar surgery, photobioreactors and hydrogen *Correspondence to: C. Kandilli, Muhendislik Fakultesi, Usak Universitesi, 64200 Usak, Turkey.…”

Section: Introductionmentioning

confidence: 99%

Transmission performance of fibre-optic bundle for solar lighting

Kandilli

Turkoglu

Ülgen

2009

Int. J. Energy Res.

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SUMMARYTransmission of concentrated solar energy via fibre-optic bundle (FOB) has a great potential for numerous applications. In this paper, it is aimed to determine the transmission performance of a constructed plastical FOB-based solar lighting system. The experiments and measurements are carried out by means of a metal halide source simulating the spectral distribution of solar radiation in visible range of wavelength. Optical efficiency, luminous efficacy, attenuation, spectral characterization under different bending conditions, integration of optical filters and FOB were investigated. The effects of the optical filter proposed are discussed for a solar lighting system. Spectral and colour properties of FOB and the optical filter are also presented.

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Transport of solar energy with optical fibres

Cited by 73 publications

References 4 publications

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

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

A new design of luminescent solar concentrator and its trial run

Transmission performance of fibre-optic bundle for solar lighting

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