Comparison of Cooling Energy Consumption Performance and Economic Feasibility of Applying Double-Pane and Triple-Pane Windows in Type E Office Buildings in Indonesia

DOI

10.2991/978-94-6463-944-5_32How to use a DOI?

Keywords

Office Building; Energy Consumption; Fenestration System; OpenStudio

Abstract

This study evaluates the cooling energy savings and economic feasibility of double pane and triple pane windows for Indonesia’s Type E office buildings. Type E buildings, which represent government office facilities with high occupancy and long operating hours, were selected because they contribute significantly to the public sector’s overall building energy consumption. Whole building simulations were conducted in OpenStudio and EnergyPlus using a standardized Type E model with window to wall ratios (WWR) of 0.2, 0.3, and 0.4 across four climatic locations: Jakarta, Balikpapan, Kupang, and Semarang. Compared to single glazing, double pane windows reduced cooling energy by approximately 2.89 to 5.04 percent, while triple pane windows achieved reductions of about 9.11–17.30 percent, with larger WWR values providing greater savings. The economic analysis using the payback period method with an electricity tariff of Rp1,699.53 per kWh resulted in very long payback periods, ranging from 318 to 533 years for double pane windows and 266 to 453 years for triple pane windows. These long payback times are caused by the relatively small annual cost savings compared to the high initial investment. Therefore, while both glazing systems are effective in reducing cooling demand, they are not economically feasible for low energy intensity Type E office buildings under current conditions. Their application may become more attractive in buildings with higher WWR or energy intensity, or if significant changes occur in electricity prices or material costs.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Daffa Khairi
AU  - Panji Dewandaru
AU  - Nur Abdillah Siddiq
AU  - Sentagi Sesotya Utami
PY  - 2025
DA  - 2025/12/26
TI  - Comparison of Cooling Energy Consumption Performance and Economic Feasibility of Applying Double-Pane and Triple-Pane Windows in Type E Office Buildings in Indonesia
BT  - Proceedings of the International Conference on Sustainable Energy: Toward Energy Transition and Net-Zero Emission (ICOSE 2025)
PB  - Atlantis Press
SP  - 505
EP  - 530
SN  - 3005-155X
UR  - https://doi.org/10.2991/978-94-6463-944-5_32
DO  - 10.2991/978-94-6463-944-5_32
ID  - Khairi2025
ER  -