Window-to-Wall Ratio as a Mode of Daylight Optimization for an Educational Building with Opaque Double-Skin Façade

Ova Candra Dewi; Kartika Rahmasari; Tika Ardina Hanjani; Agust Danang Ismoyo; Amardeep M. Dugar

doi:10.5755/j01.sace.30.1.29744

Window-to-Wall Ratio as a Mode of Daylight Optimization for an Educational Building with Opaque Double-Skin Façade

Ova Candra Dewi, Kartika Rahmasari, Tika Ardina Hanjani, Agust Danang Ismoyo, Amardeep M. Dugar

Department of Architecture

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

This study investigates the impact of Window-to-Wall Ratio (WWR) and Shading Coefficients (SC) as passive design strategies to optimise daylight in an opaque brick Double-Skin Façade (DSF) of an education building in Depok, Indonesia. A sample education building was simulated with DiaLux software for calculating the daylight distribution due to WWR on a daily basis during normal office hours. The optimum amount of window size and glazing were investigated for a typical floor plate area of 315.16m2. WWR was considered from 30% to 60% at 10% intervals in a horizontal and vertical expanding method of window. The simulations were performed in two sky conditions (sunny sky and standard CIE overcast sky) on different dates using glazing material of different SC. The primary findings of this study are that 40% WWR with SC 0.42 and 60% WWR with SC 0.95 achieve the best results for the north and south façade respectively of a DSF building.

Original language	English
Pages (from-to)	142-152
Number of pages	11
Journal	Journal of Sustainable Architecture and Civil Engineering
Volume	30
Issue number	1
DOIs	https://doi.org/10.5755/j01.sace.30.1.29744
Publication status	Published - 2022

Keywords

daylight performance
double skin façade
shading coefficient
window-to-wall ratio

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.5755/j01.sace.30.1.29744

Cite this

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title = "Window-to-Wall Ratio as a Mode of Daylight Optimization for an Educational Building with Opaque Double-Skin Fa{\c c}ade",

abstract = "This study investigates the impact of Window-to-Wall Ratio (WWR) and Shading Coefficients (SC) as passive design strategies to optimise daylight in an opaque brick Double-Skin Fa{\c c}ade (DSF) of an education building in Depok, Indonesia. A sample education building was simulated with DiaLux software for calculating the daylight distribution due to WWR on a daily basis during normal office hours. The optimum amount of window size and glazing were investigated for a typical floor plate area of 315.16m2. WWR was considered from 30% to 60% at 10% intervals in a horizontal and vertical expanding method of window. The simulations were performed in two sky conditions (sunny sky and standard CIE overcast sky) on different dates using glazing material of different SC. The primary findings of this study are that 40% WWR with SC 0.42 and 60% WWR with SC 0.95 achieve the best results for the north and south fa{\c c}ade respectively of a DSF building.",

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note = "Funding Information: All authors contributed equally in the preparation of this manuscript. The authors gratefully acknowledge support from the Department Architecture, Faculty of Engineering, Universitas Indonesia, especially Dr. Toga H. Panjaitan. The authors thank Bayu Ariaji Wicaksono and Herdinal Muhammad Boer for support in undertaking the preliminary study. The authors also thank the anonymous reviewers for their valuable comments. Publisher Copyright: {\textcopyright} 2022, Kauno Technologijos Universitetas. All rights reserved.",

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AU - Dewi, Ova Candra

AU - Rahmasari, Kartika

AU - Hanjani, Tika Ardina

AU - Ismoyo, Agust Danang

AU - Dugar, Amardeep M.

N1 - Funding Information: All authors contributed equally in the preparation of this manuscript. The authors gratefully acknowledge support from the Department Architecture, Faculty of Engineering, Universitas Indonesia, especially Dr. Toga H. Panjaitan. The authors thank Bayu Ariaji Wicaksono and Herdinal Muhammad Boer for support in undertaking the preliminary study. The authors also thank the anonymous reviewers for their valuable comments. Publisher Copyright: © 2022, Kauno Technologijos Universitetas. All rights reserved.

PY - 2022

Y1 - 2022

N2 - This study investigates the impact of Window-to-Wall Ratio (WWR) and Shading Coefficients (SC) as passive design strategies to optimise daylight in an opaque brick Double-Skin Façade (DSF) of an education building in Depok, Indonesia. A sample education building was simulated with DiaLux software for calculating the daylight distribution due to WWR on a daily basis during normal office hours. The optimum amount of window size and glazing were investigated for a typical floor plate area of 315.16m2. WWR was considered from 30% to 60% at 10% intervals in a horizontal and vertical expanding method of window. The simulations were performed in two sky conditions (sunny sky and standard CIE overcast sky) on different dates using glazing material of different SC. The primary findings of this study are that 40% WWR with SC 0.42 and 60% WWR with SC 0.95 achieve the best results for the north and south façade respectively of a DSF building.

AB - This study investigates the impact of Window-to-Wall Ratio (WWR) and Shading Coefficients (SC) as passive design strategies to optimise daylight in an opaque brick Double-Skin Façade (DSF) of an education building in Depok, Indonesia. A sample education building was simulated with DiaLux software for calculating the daylight distribution due to WWR on a daily basis during normal office hours. The optimum amount of window size and glazing were investigated for a typical floor plate area of 315.16m2. WWR was considered from 30% to 60% at 10% intervals in a horizontal and vertical expanding method of window. The simulations were performed in two sky conditions (sunny sky and standard CIE overcast sky) on different dates using glazing material of different SC. The primary findings of this study are that 40% WWR with SC 0.42 and 60% WWR with SC 0.95 achieve the best results for the north and south façade respectively of a DSF building.

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Window-to-Wall Ratio as a Mode of Daylight Optimization for an Educational Building with Opaque Double-Skin Façade

Abstract

Keywords

UN SDGs

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