Affiliation:
1. Tecnológico Nacional de México/TES Valle de Bravo
Abstract
This work deals with the design and evaluation of a concentrator-luminoduct system for daylighting. A concentrator with a truncated cone profile was designed to capture, transfer and diffuse sunlight, which was concentrated and transported by reflection along the walls of the system and finally projected to the interior of an agricultural building. The illuminance achieved by the system with and without concentration was compared and a significant difference in illumination levels was found. The concentrator obtained concentration factors between 1.7 and 3.6. The critical aspects that determined the concentration of natural light were the angle of acceptance (45.68º), the orientation (45º and 90º) and the reflectance of the material used (95%), in addition, it was possible to reduce the dimensions of these systems, conserving the illuminance. It was proven that this system increased the illumination of the interior space where the light did not reach naturally, improving the illuminance levels (300-500 lx), according to CIE (Commission Internationale l'Eclarige). It was demonstrated that the system represents a viable and adaptable solution for naturally illuminating buildings.
Reference12 articles.
1. Boyce, P. (2022). Light, lighting and human health. Lighting Research & Technology, 54(2), 101–144. https://doi.org/10.1177/14771535211010267
2. Brainard, G., & Glickman, G. (2003). The biological potency of light in humans: Significance to health and behaviour. Proceedings of 25th Session of the CIE, 1, págs. I.22-I.23. San Diego, USA.
3. Callow, J. M. (2003). Daylighting using tubular light guide systems (Doctoral dissertation, University of Nottingham). http://eprints.nottingham.ac.uk/id/eprint/10026
4. Callow, J., & Shao, L. (2003). Air-clad optical rod daylighting system. Lighting Research & Technology, 35(1), 31–38. https://doi.org/10.1191/1477153503li081oa
5. Carter, D. J. (2002). The measured and predicted performance of passive solar light pipe systems. Lighting Research & Technology, 34(1), 39-51. https://doi.org/10.1191/1365782802li029oa