We have developed a system that enables both daylight and electric light to be efficiently delivered to core areas of a building. Daylight is directed into the building by means of a new and cost-effective canopy system which collects sunlight and directs it into the dual-function luminaire. It efficiently transports and distributes the light along its length, and when the amount of daylight is insufficient, auxiliary electric light is automatically provided by fluorescent lamps. This paper focusses on the prototype illumination control system and its performance.
Get full access to this article
View all access options for this article.
References
1.
Tsangrassoulis A., Doulos L., Santamouris M., Fontoynont M., Maamari F., Wilson M., Jacobs A., Solomon J., Zimmermann A., Pohl W., Mihalakakou G.On the energy efficiency of a prototype hybrid daylighting system. Solar Energy2005; 79(1): 56—64.
2.
Greenup PJ, Edmonds IATest room measurements and computer simulations of the micro-light guiding shade daylight redirecting device. Solar Energy2004; 76(1): 99—109.
Schlegel GO, Burkholder FW, Klein SA, Beckman WA, Wood BD, Muhs JDAnalysis of a full spectrum hybrid lighting system. Solar Energy2004; 76(4): 359—68.
5.
Whitehead LA, Lee EJ, Kotlicki A.New efficient tubular daylighting system for multi-floor buildings. Proceedings of the CIE Quadrennial Conference, San Diego, CA, 2003.
6.
Rosemann A., Mossman M., Whitehead LAA cost-effective solution for core daylighting in office buildings. Proceedings of the Solar 2006 Conference, Denver, CO, 2006.
7.
Whitehead LA , Nodwell RA, Curzon FLNew efficient light guide for interior illumination . Applied Optics1982; 21(15): 2755—57.
8.
Optical Lighting FilmTM, Product No. 2301, from 3M Company, St. Paul, MN, USA, 55144-1000, 1988.
9.
Whitehead LANew simplified design procedures for prism light guide luminaires. Proceedings of the Annual Conference of the Illuminating Engineering Society of North America, Seattle, WA, 1997.
10.
Visible Mirror 2000TM, Product No. VM 2000, from 3M Company, St. Paul, MN, USA, 55144-1000, 2000.
11.
Dali AG, DALI manual. Retrieved from http://www.dali-ag.org, Frankfurt andRichard Pflaum VerlagMünchen, 2001 .
12.
Rosemann A., Cox G., Mossman M., Whitehead LAEfficient hybrid light guide to enable cost-effective core daylighting. Proceedings of the Annual Conference of the Illuminating Engineering Society of North America, Phoenix, AZ, 2007.
13.
EN12464-1 Light and Lighting — Lighting of work places — Part 1: Indoor work places, European standard, 2002.
14.
Rosemann A. , Cox GB, Upward AJ, Friedel PG, Mossman MA, Whitehead LAEfficient dual function solar/electric light guide to enable cost effective core daylighting. Leukos2007; 3(4): 259—76.
