Lighting system design according to different standards in office building: A technical and economic evaluations
Lighting system is an important sub-system in office buildings. A good design can contribute energy saving and visual comfort to occupants. This paper presents a comparison of lighting system design according to different standards: European Standard EN12464-1 and Malaysian Standard MS1525 i...
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| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2018
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/7217/1/P13855_cf7f352c30d4b7de76d815070fe69f9e.pdf http://eprints.uthm.edu.my/7217/ https://doi.org/10.1088/1742-6596/1049/1/012010 |
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| Summary: | Lighting system is an important sub-system in office
buildings. A good design can contribute energy saving and visual
comfort to occupants. This paper presents a comparison of lighting
system design according to different standards: European Standard
EN12464-1 and Malaysian Standard MS1525 in terms of average
illuminance level and illuminance uniformity. In the design, the
illuminance measurement is according to the Illuminating Engineering
Society of North America (IESNA) and the European Standard
EN12464-1. Three types of luminaires are considered which are: T8,
T5 and light emitting diode (LED) lamps. The technical and economic
evaluations are taken into account in this paper. The technical
evaluations are considered the number of luminaires, average
illuminance level and illuminance uniformity. The energy
consumption (EC) and lighting energy numeric indicator (LENI) are
considered according to the European Standard EN15193. Meanwhile,
the economic evaluation involves billings and luminaires costs and
billing savings. The case study is an office room and it is modelled
and simulated using DIALux software. The results show that the
design according to the European Standard EN12464-1 with
uniformity based method that used T5 lamps had contributed to the
highest number of luminaires and costs. Whereas, the design
according to the Malaysian Standard MS1525 with illuminance level
based method that used LED lamps had contributed to the lowest
number of luminaires and costs. Thus it can provide the higher billing
savings. It can be concluded the LED has great potential to replace T8
and T5 lamps. |
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