Daylighting can be fluorescent: Development of a fiber solar concentrator and test for its indoor illumination

Abstract Many limitations such as the strict dependence on beam irradiation and difficulties for wiring remain in conventional remote daylighting devices. This paper provides a brief discussion on the working theory and limitations for those conventional devices and presents a new concept developed by the first author for remote indoor daylighting. Based on the developed concept, a new device was designed and fabricated accordingly, which is an optical fiber solar concentrator consisting of a PMMA plate and 150 pieces of three-color 1 m long Φ 2 mm fluorescent fibers. This new device is mounted on a university building roof and the concentrated light is transported to a remote dark room through 10 m long Φ 2 mm clear optical fibers. Outdoor testing and evaluations for remote indoor daylighting and power production have been conducted. A 6-month monitored data from 24th May 2008 to 23rd Nov 2008 has been presented and the results reveal this new device a pleasant potential in remote indoor daylighting for large amount application in building integration.

[1]  Marc Schiler.  Simplified Design of Building Lighting , 1992 .

[2]  Danny H.W. Li,et al.  Luminous efficacy of daylight under different sky conditions , 1996 .

[3]  Yoshihiro Ohno,et al.  Color rendering and luminous efficacy of white LED spectra , 2004, SPIE Optics + Photonics.

[4]  Toshiro Maruyama,et al.  Static solar concentrator with vertical flat plate photovoltaic cells and switchable white/transparent bottom plate , 2005 .

[5]  Arif Hepbasli,et al.  Exergetic assessment of transmission concentrated solar energy systems via optical fibres for building applications , 2008 .

[6]  Yoonhyung Kim.  Rational and effective use of energy in Korea's industrialization , 1983 .

[7]  Renata Reisfeld,et al.  Prospects of sol-gel technology towards luminescent materials , 2001 .

[8]  Enedir Ghisi,et al.  Evaluating the potential for energy savings on lighting by integrating fibre optics in buildings , 2006 .

[9]  Dj Carter.  Developments in tubular daylight guidance systems , 2004 .

[10]  Hiroyuki Ohtsuka,et al.  Static concentrator photovoltaic module with prism array , 2001 .

[11]  A H Rawicz,et al.  Thin-film luminescent concentrators for position-sensitive devices. , 1997, Applied optics.

[12]  J Franklin,et al.  Optimisation of a three-colour luminescent solar concentrator daylighting system , 2004 .

[13]  S A Evenson,et al.  Thin-film luminescent concentrators for integrated devices: a cookbook. , 1995, Applied optics.

[14]  Harald Ries,et al.  An astigmatic corrected target-aligned heliostat for high concentration , 1995 .

[15]  Ivan Moreno,et al.  Color uniformity of the light distribution from several cluster configurations of multicolor LEDs , 2005, SPIE Optics + Photonics.

[16]  M. David Egan.  Concepts In Architectural Lighting , 1983 .

[17]  B. Richards.  Enhancing the performance of silicon solar cells via the application of passive luminescence conversion layers , 2006 .

[18]  Jean-Louis Scartezzini,et al.  Assessing Daylighting Performances of Electrochromic Glazings Coupled to an Anidolic Device , 2003 .

[19]  Veronica Garcia Hansen,et al.  NATURAL ILLUMINATION OF DEEP-PLAN OFFICE BUILDINGS: LIGHT PIPE STRATEGIES , 2003 .

[20]  P. Würfel.  Physics of solar cells : from principles to new concepts , 2005 .

[21]  J. Cariou,et al.  Transport of solar energy with optical fibres , 1982 .

[22]  J. S. Batchelder,et al.  Luminescent solar concentrators. 1: Theory of operation and techniques for performance evaluation. , 1979, Applied optics.

[23]  J. Lambe,et al.  Luminescent greenhouse collector for solar radiation. , 1976, Applied optics.

[24]  Abbas Elmualim,et al.  Measurement and modelling of light pipe for energy efficient lighting , 1998 .

[25]  Geoffrey Smith.  Materials and systems for efficient lighting and delivery of daylight , 2004 .

[26]  Renata Reisfeld,et al.  Luminescent solar concentrators for energy conversion , 1982 .

[27]  Glenn Sweitzer.  Three advanced daylighting technologies for offices , 1993 .

[28]  M. Fontoynont,et al.  Day-lighting of underground spaces: design rules , 1996 .