Investigating Daylight Quality in Malaysian Government Office Buildings Through Daylight Factor and Surface Luminance
In recent years, there has been an increasing interest in using daylight to save energy in buildings. In tropical regions, daylighting is always an energy saver. On the other hand, daylight provides visual comfort. According to standards, it shows that many criteria should be taken into consideration in order to have daylight utilization and visual comfort. The current standard in Malaysia, MS 1525 does not provide sufficient guideline. Hence, more research is needed on daylight performance. If architects do not consider daylight design, it not only causes inconvenience in working spaces but also causes more energy consumption as well as environmental pollution. This research had surveyed daylight performance in 5 selected office buildings from different area of Malaysian through experimental method. Several parameters of daylight quality such as daylight factor, surface luminance and surface luminance ratio were measured in different rooms in each building. The result of this research demonstrated that most of the buildings were not designed for daylight utilization. Therefore, it is very important that architects follow the daylight design recommendation to reduce consumption of electric power for artificial lighting while the sufficient quality of daylight is available.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1062582Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2836
 D.H.W Li and J.C. Lam and S.L.Wong,Daylighting and its implications to overall thermal transfer value (OTTV) determinations , Energy, vol.27 , 2002, pp 991-1008.
 YJ. Huang,B. Thom,B. Ramadan, A daylighting design tool for Singapore based on DOE-2.1C simulations, Proceedings of the ASHRAE Far East Conference on Air-conditioning in Hot Climates, Kuala Lumpur; 1989, pp 2027.
 N. Ibrahim and A. Zain Ahmed,A Simple Prediction Tool for Energy Savings due to Daylighting in Malaysia, ISESCO Science and Technology Vision. 2(1),2006, pp 25-29.
 A. Zain-Ahmed and k. Sopian and M.Y.H. Othman and Abidin, Z. Zainol,The Availability of Daylight from Tropical Skies: A Case Study of Malaysia, Renewable Energy,vol.25, 2002, pp 21-30.
 D.R. Ossen,Optimum Overhang Geometry for High Rise Office Building Energy Saving in Tropical Climates, Ph.D., Faculty of Built Environment, Universiti Teknologi Malaysia,2005.
 A.N.M. Shahriar andM.A. Mohit, Estimating depth of daylight zone and PSALI for side lit office spaces using the CIE Standard General Sky, Building and Environment,Vol. 42,2007,pp 2850-2859.
 Y.W. Lim and M.H. Ahmad and D.R.Ossen, Effect of solar shading, fenestration and room geometry on office building energy efficiency in hot humid tropic, 3rd International Conference on Built Environment in Developing Countries. 2-3 December. Universiti Sains Malaysia, USM, Penang, Malaysia,2009,pp 174-185.
 E. Ghisi and J.A. Tinker, An Ideal Window Area concept for energy efficient integration of daylight and artificial light in buildings, Building and Environment, Vol.40,2005, pp 51-61.
 A. Tzempelikos and A.K. Athienitis and P. Karava, Simulation of faade and envelope design options for a new institutional building, Solar Energy, 81(9),2007,pp 1088-1103.
 Y.W. Lim and M.A.Hamdan, Daylight and Users- Response in High Rise Open Plan Office: A case study of Malaysia, 3rd International Graduate Conference on Engineering, Science, and Humanities,2010, Universiti Teknologi Malaysia, UTM, Malaysia.
 Department of Standards Malaysia,Malaysian Standard: Code of Practice on Energy efficiency and Use of Renewable Energy for Non- Residential Buildings (1st Revision), Malaysia, MS 1525:2007.
 M.C. Dubois, Impact of Solar Shading Devices on Daylight Quality: Measurements in Experimental Office Rooms, Research Report,2001, Lund, Sweden, Lund University.