Repository of Research and Investigative Information

Repository of Research and Investigative Information

Kurdistan University of Medical Sciences

A simple method to improve VCP by reducing DGR in an interior lighting installation

(2018) A simple method to improve VCP by reducing DGR in an interior lighting installation. Light and Engineering.

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Discomfort glare rating (DGR) and Unified glare rating (UGR) are main models currently used as discomfort glare evaluation systems, both of which are calculated employing four factors including the luminaire size, the luminaire position relative to the observer, background luminance, and the luminaires number and location. This study aims at proposing a simple solution for reducing DGR and thereby increasing visual comfort perception (VCP) in an interior lighting system. The proposed solution is based solely on variations of luminaire surface area without change in other factors, e.g. candlepower and number and location of luminaires in the lighting system. To this end, firstly, the equations related to DGR were modified for a desired luminaire, and, secondly, by solving the modified equations, the new luminaire surface area was obtained, which caused DGR decrease and VCP improvement. Finally, by some modifications in the location of selected luminaires having main role on DGR, the VCP rose considerably. © 2018, LLC Editorial of Journal "Light Technik". All rights reserved.

Item Type: Article
Keywords: Glare; Glare effects; Lighting fixtures; Location, Background luminance; Discomfort glare; Evaluation systems; Interior lighting; Lighting systems; Modified equation; Surface area; Visual comfort, Lighting
Page Range: pp. 73-80
Journal or Publication Title: Light and Engineering
Volume: 26
Number: 1
Publisher: LLC Editorial of Journal "Light Technik"
ISSN: 02362945
Depositing User: مهندس جمال محمودپور

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