Daylight Annual Illuminance Investigation in Elementary School Classrooms for the Tropic of Lhokseumawe, Indonesia

Atthaillah; Rizki A. Mangkuto; M. Donny Koerniawan; F. X. Nugroho Soelami

doi:10.6180/jase.202202_25(1).0013

Daylight Annual Illuminance Investigation in Elementary School Classrooms for the Tropic of Lhokseumawe, Indonesia

Physics

Atthaillah This email address is being protected from spambots. You need JavaScript enabled to view it.^1,2, Rizki A. Mangkuto³, M. Donny Koerniawan⁴, and F.X. Nugroho Soelami³

¹Architecture Program, Faculty of Engineering, Universitas Malikussaleh, Jl. Cot Teungku Nie, Aceh Utara 24355, Indonesia
²Engineering Physics Doctorate Program, Faculty of Industrial Technology Institut Teknologi Bandung, Jl. Ganesha 10, Labtek VI, Bandung 40132, Indonesia
³Building Physics Research Group, Faculty of Industrial Technology, Institut Teknologi Bandung, Jl. Ganesha 10, Labtek VI, Bandung 40132, Indonesia
⁴Building Technology Research Group, School of Architecture, Planning, and Policy Development, Institut Teknologi Bandung, Jl. Ganesha 10, Labtek VI, Bandung 40132, Indonesia

Received: December 9, 2020
Accepted: February 16, 2021
Publication Date: July 19, 2021

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202202_25(1).0013

ABSTRACT

This study investigated twenty-two (22) state elementary schools, regarding daylight annual illuminance in the classrooms, using climate-based daylight modelling (CBDM) metrics. This is due to the missing information on the annual daylight performance inside the classroom in Indonesia. Over 250 classrooms were assessed using Rhinoceros and Grasshopper computational platforms. Furthermore, Daysim simulation engine was employed through the advantage of Ladybug tools to connect and automate the simulation workflow parametrically. Since there were no prior studies using CBDM metrics for daylight assessment of classrooms in the Indonesian context, the illuminance range from 250 to 750 lux was taken as the target for the annual useful daylight illuminance (UDI), as suggested in the Indonesian daylighting standard. Result shows 35 classrooms under the good daylight performance, 171 classrooms in sufficient category and 50 others under unsatisfactory of annual illuminance. The most sensitive contributors are both corridor and back shading depth with Spearman correlation of -0.70 and -0.76 respectively. The strong sensitive variables both has p-values lower than 0.05 which indicates statistically significant for the model.

Keywords: Daylighting; Elementary School Classrooms; Climate Based Daylight Modeling; Computer Simulation; Annual Illuminances

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