Optimization of lighting design in classroom for visual comfort (Case Study : Universitas Tridinanti Palembang Tower)

Abstract

Currently, the learning process in the classroom uses an LCD projector to display material on the white board. This LCD projector produces its own light, so the light source in the room will be added (beside daylight and artificial light). This condition makes a visual discomfort and not efficient energy uses. Based on previous study, the classroom users in UTP tower got visual comfort when the lamps were on 100% if projector used. But, in other condition when the projector is off, users will comfort if daylight and electric lighting combined. Based on these problems, this study is aimed to test the effective combination of daylight and artificial lighting so that the iso-contour of illumination spread evenly and visual comfort achieved. The method of experiment is used to find out the effect of various placements of artificial light that are on to the iso-contour of illumination. The experiments conducted with the help of simulation to experiment with design parameter is the placements of artificial light that turn on. The evaluation of visual comfort is based on the iso-contour of illumination and reflectance value on the indoor surface. The result of this research will show that the placements of light on will affect the illumination contour.

Evaluation of the Visual Comfort and Daylight Performance of the Visual Art Classrooms

“…The implementation of daylighting strategies should be done in combination with a well-designed artificial lighting system. The daylight control mechanisms [41], individual lighting control features [33], and the development of activity-based lighting scenarios [40] enables to adjust lighting levels during periods with low availability of natural light or use the art studio during the evenings.…”

“…In Madrid, to achieve the appropriate level of illuminance in classrooms, the application of LED lighting systems and white paint of the walls was suggested [39]. Setiati and Budiarto [40] suggest developing several lighting scenarios based on the schedule and the use of the necessity of the whiteboard use and grouping the lighting sources in a way that provides the optimal visual comfort using natural and artificial light. Dong et al [41] propose using curtains for natural light control in combination with sensors, which can adjust artificial light at the desired intensity.…”

“…Illuminance is the most frequently used field metric [29,33,36,38,39,43,45,46], which is often combined with the occupants' survey. Illuminance [29][30][31][32]44,39,40,[44][45][46]51,52] and Daylight Factor [30,36,37,[44][45][46]52] are the most used metrics for the daylight simulation which can be complemented with the Spatial Daylight Autonomy [36,40,43,46] and Useful Daylight Illuminance [36,45,46]. Glare [35,46] and light uniformity [29,30,31] contribute to the evaluation of visual comfort in the classroom.…”

Sustainable Lighting through Design and Energy Efficiency Consumption of Artificial Lighting in Educational Building.

“…The reflected light (brightness) is always less than the incident light (illumination), therefore the RF is always less than 1, and since reflected light is always little, the RF is never 0. Artificial lighting systems play an important role in the energy consumption due to incorrect placement of lamp points and parallel lighting zoning will result in excessive use of artificial lighting (Setiati & Budiarto, 2021). Previous study conducted by Vollaro et al, (2014) has suggested that lighting design by means of energy consumption assessment connects with lighting requirements.…”