Application of daylighting systems for energy-efficient buildings in Malaysia
2000
M.Y. Othman | Sayigh, A.A.M. | K. Sopian | A. Zain-Ahmed | Surendran, P.N.
The Malaysian climatic conditions typically signify high temperatures, high humidities and high solar radiation (annual mean of 16.4 MJmE-2 day E-1). The mean maximum daily otudoor temperature and relative air humidity can reach 35 degree Centigrade and 100% respectively. The sun is also a high natural light source, with maximum illumination exceeding 80 klux on plane surfaces, which may be utilised for internal illumination of buildings. Innovative use of daylighting systems can reduce the number of artificial or electric lighting required to illuminate the spaces within buildings. However, the climatic impact on buildings is paradoxical against the visual requirements. High illuminance causes high unwanted thermal gains which also caused glare in some instances. This paper reports on studies made on the design strategies in simple buildings in Malsysia applied to modify illumination levels in the building spaces. Sveral daylighting systems are presented showing their implication on thermal performance and possible energy savings produced by applying these systems to building fenestrations.
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