Evaluation of Uniformity and Glare Improvement with Low Energy Efficiency Losses in Street Lighting LED Luminaires Using Laser-Sintered Polyamide-Based Diffuse Covers

Alfonso Gago-Calderón, Manuel Jesús Hermoso-Orzáez, Jose Ramon De Andres-Diaz and Guillermo Redrado-Salvatierra
Additional contact information
Alfonso Gago-Calderón: Department of Graphic Expression, Design and Projects, Universidad of Málaga, 29016 Malaga, Spain
Manuel Jesús Hermoso-Orzáez: Department of Graphic Engineering Design and Projects, Universidad de Jaen, 23071 Jaen, Spain
Jose Ramon De Andres-Diaz: Department of Graphic Expression, Design and Projects, Universidad of Málaga, 29016 Malaga, Spain
Guillermo Redrado-Salvatierra: A.T.P. Technical Lighting Public, 31194 Pamplona, Spain

Energies, 2018, vol. 11, issue 4, 1-17

Abstract: Energy saving in street lighting is garnering more interest and has become a priority in municipal management. Therefore, LED luminaires are gradually becoming prevalent in our cities. Beyond their energy/economic saving potential, quality in public lighting installations concerns aspects such as uniformity and glare which must be maintained if not improved in any installation renewal project using this technology. The high light intensity generated in a discrete point in LED packages and its directional nature result in significant deficiencies in these last two parameters. To soften these effects, translucent covers are being used as one of the most common solutions with the drawback of significant light intensity losses. The objective of this paper is to evaluate the behavior of LED luminaire’s polyamide-based optical covers manufactured with a laser-sintered process. These are designed to improve glare and uniformity output, to minimize light output reductions, and to be industrially manufactured with no increment of cost for their lighting equipment compared to conventional transparent polycarbonate solutions. A laboratory and field lighting test study has been applied to different covers with the same LED lamp and luminaire to compare the performance of three different solutions built with different polymeric materials and with different light transmission surface textures. The photometric results have been observed and discussed to demonstrate the ability to significantly improve the lighting performance of LED luminaires—illuminance and uniformity levels and discomfort and disability glare indexes— using an improved optic cover.

Keywords: outdoor lighting; energy saving; sustainable cities; diffuse optics; photometry; uniformity; glare subject (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

Downloads: (external link)
https://www.mdpi.com/1996-1073/11/4/816/pdf (application/pdf)
https://www.mdpi.com/1996-1073/11/4/816/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:11:y:2018:i:4:p:816-:d:139181

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().