An innovative system for illumination of internal spaces was studied, constructed and tested. The system was dubbed `The Sunflowers' because the solar collectors were designed to track the sun's position during the day. Each Sunflower includes sunlight concentrators, optical fibres and mechanical and electronic systems for sun tracking. A Sunflower lighting system has been successfully installed in a prestigious museum to provide internal illumination of showcases. Solar illumination is obtained by concentrating the sunlight into optical fibres, which guide the light in the interior of the building and realise the lighting points.
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References
1.
Ciamberlini C., Francini F., Longobardi G., Piattelli M., Sansoni P.Solar system for the exploitation of the whole collected energy. Optics and Laser in Engineering2003; 39(2): 233-246.
2.
Fontani D., Francini F., Jafrancesco D., Longobardi G., Sansoni P.Optical design and development of fibre coupled compact solar collectors . Lighting Res. & Technol. 2007; 39(1): 17-30.
3.
Winston R., Goodman NB, Ignatius R., Wharton L.Solid-dielectric compound parabolic concentrators: on their use with photovoltaic devices. Applied Optics1976; 15(10): 2434-2436.
4.
Winston R.Light collection within the framework of geometrical optics. J. Opt. Soc. Amer. 1970; 60(2): 245-247.
5.
Winston R., Minano JC, Benitez P.Non-Imaging Optics. Optics and Photonics USA: Elsevier Academic Press, 2005.
6.
Collares - Pereira M., Rabl A., Winston R.Lens-mirror combinations with maximal concentration . Applied Optics1977; 16(10): 2677-2683.
7.
Xiaohui Ning .Three-dimensional ideal θ1/θ2 angular transformer and its uses in fibre optics. Applied Optics1988; 27(19): 4126-4130.
8.
Cariou JM, Dugas J., Martin L.Transport of solar power with optical fibres. Solar Power1982; 29(5): 397-406.
9.
Liang D., Nunes Y., Monteiro LF, Monteiro MLF, Collares -Pereira M.200W solar power delivery with optical fibre bundles. SPIE1997; 3139: 277-286.
10.
Luque A.Solar cells and optics for photovoltaic concentration. The Adam Hilger Series on Optics and Optoelectronics. Bristol and Philadelphia, ISBN 0-85274-106-5, 1989.
11.
Solar Collectors, Power Storage and Materials. Edited by Francis de Winter. The MIT press Cambridge, MassachusettsLondon ISBN 0-262-04104-9; 1991.
12.
Fontani D., Francini F., Sansoni P.Optical characterisation of solar collectors. Optics and Laser in Engineering2007; 45: 351-359.
13.
Wyszecki G. , Stiles WSColor Science. Concepts and Methods . Quantitative Data and Formulae, 2nd edn, A Wiley-Iterscience Publication, New York: John Wiley and Sons Inc., 1982.
14.
Ohno, Y.CIE Fundamentals for Color Measurements, Proc. IS&T NIP16 International Conference on Digital Printing Technologies , Vancouver, Canada, Oct. 15-20 2000 : 540-545.
15.
Cuttle C.Damage to museum objects due to light exposure. Lighting Res. & Technol. 1996; 28(1): 1-10.
16.
Castellini C., Cetica M., Farini A., Francini F., Sansoni P.Dispositivo per il monitoraggio della radiazione ultravioletta e visibile in ambiente mussale. Colorimetria e Beni culturali - SIOF, atti dei convegni Firenze 1999 e Venezia 2000; 2000: 168-180.
