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THE BEHAVIOR OF INTERNAL HUMIDITY FROM FIBRE OPTIC DAYLIGHTING SYSTEM APPLICATION

Electrical lighting consumed 13% to 43% from overall energy which considered as second major usage of electrical energy in a building. Fibre optic daylighting is a potential approach for the remote source daylighting which is able to minimize the usage of electrical light if the minimum recommended standard of human comfort is achieved. Since the internal humidity also plays an important role in human comfort, the objectives of this research are to investigate the effects of the application inside building for humidity. This research assessed the potential of fibre optic daylighting for interior illumination using 4 m x 5 m x 2.8 (H-Ceiling) spaces through empirical data collection in an actual environment. The data were collected for every 5 minutes from 8:00 AM to 6:00 PM on the 17 th May 2013 until the 2 nd June 2013 using 4 computer-linked sensors to record humidity for both external and internal building. The comparison approach was selected in analyzing the data collected with the observation. . It is shown that the fibre optic daylighting system has no significant effect in relative humidity even possibly increases the internal room temperature by 2 o C .