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Performance evaluation of lighting fixtures and installations for renewable energy applications
Author(s) -
Akinradewo Oriola Emmanuel,
Obiyemi Obiseye Oluwaniyi,
Oyelami Seun
Publication year - 2018
Publication title -
environmental quality management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 27
eISSN - 1520-6483
pISSN - 1088-1913
DOI - 10.1002/tqem.21587
Subject(s) - light emitting diode , electric light , led lamp , smart lighting , electricity meter , automotive engineering , efficient energy use , architectural engineering , renewable energy , metre , electrical engineering , energy (signal processing) , energy consumption , computer science , engineering , power (physics) , mathematics , statistics , physics , quantum mechanics , astronomy
Energy efficiency has been viewed as the most accessible and cost‐effective form of alternative energy. While lighting occupies only a small percentage in the total electric loads in homes, technological advances in light‐emitting diodes (LEDs) are becoming more convincing in their power consumption and lumens output. This article evaluates the percentage that lighting occupied in the total load spectrum in the two main buildings at Osun State University and verifies the light level in the library reading rooms—places where adequate lighting is imperative—with recommended standards and a comparison between the output of compact fluorescent lamps (CFLs) and the LEDs. The walk‐through energy audit approach was used to evaluate the percentage of energy that lighting consumes in these buildings. This approach involved identifying and grouping all of the electrical loads with their respective power ratings in Watts. Similarly, an illumination level verification campaign was conducted with the use of a digital light meter (a sensor‐based device) connected to a personal computer to log illumination levels in real time along the library's aisles and in the reading cubicles. The same light meter was used for comparing the output of installed CFL and proposed LEDs in an office space. Results indicate that lighting fixtures consume 12.2% of the load spectrum. The lighting installations also do not conform to global illumination standards for the assessed facilities, while the output of the LEDs that were tested was still low compared to the output of the CFLs. It is therefore recommended that better LED light sources be considered for efficient energy, reduction in environmental pollution associated with power generation, reduction in the power needed to maintain a cooling effect, and cost economy.