The effectiveness of dayligting through the toplighting design in large-volume building models

Abstract

The utilization of daylighting as an effort to reduce the usage of building energy needs to be optimized. This is because, low-rise buildings with large volumes require specific strategies for proper light distribution throughout the space. Hence, this study aims to explore and compare the effectiveness of daylighting in the openings design of skylight, roof monitor, and sawtooth in large-volume buildings in Bandung. The effectiveness is assessed by examining lighting performance based on distribution patterns, the value of Daylight Factor (DF), and the Coefficient of Uniformity (CU). Experimental research method with simulation program known as Velux Daylight Visualizer 3.0 is used to present and analyze the lighting data. The results showed that the type, position (openings' height and distance), as well as the opening direction affected the distribution patterns and daylighting performance. Based on the simulation, the skylight opening is the most effective in meeting the standard value of Daylight Factor (> 2%) and Coefficient of Uniformity (CU min. 0.3 and DF min. 0.8%). Thus, space and openings model with a percentage roof area of 16.3% in the simulation can be used as a reference for large-volume buildings because, it meets the requirements of Daylight Factor value and sufficient Coefficient of Uniformity.

Intensitas Pencahayaan Alami dan Kenyamanan Visual Untuk Aktivitas Kerja pada Area Semi-Outdoor Cafe di Kota Bandung

“…Terdapat beberapa tipe bukaan atas, yaitu skylight, roof monitor, dan sawtooth. Roof monitor dapat mengurangi panas berlebih, sedangkan sawtooth dapat memasukkan cahaya alami secara maksimal dan dapat mengurangi radiasi matahari [7,10].…”

A Study on Optimal Opening Configuration for Art Museum Exhibition Space Considering Daylight Performance, Indoor Thermal Comfort, and Energy Consumption

“…Based on an extensive review of the literature and considering real-world utilization conditions, this study carefully selected four daylight systems for exhibition spaces, as depicted in Figure 3 [9,[20][21][22][23]. The models, arranged from left to right, include the pyramid skylight model (PMS), sawtooth skylight model (STS), monitor skylight model (MTS), and flat skylight model (FLS).…”