INVESTIGASI ALTERNATIF VARIASI WINDOW-TO-WALL RATIO (WWR) DAN PEMILIHAN MATERIAL KACA JENDELA DALAM MENCAPAI EFISIENSI ENERGI DI BANGUNAN HOTEL BERIKLIM TROPIS
DOI:
https://doi.org/10.31848/arcade.v10i2.4569Keywords:
Energy Efficiency, Hotel Building, Window-to-Wall Ratio (WWR).Abstract
The building sector is a major global energy consumer, with windows being the most critical element for heat gain in tropical climates. This research aims to investigate the optimal Window-to-Wall Ratio (WWR) and glass material selection for energy efficiency in hotel building, using Hotel Voyou in Surakarta as a case study. The methodology employs a qualitative approach through descriptive analysis and expert validation (Expert Validation) involving three key stakeholders: a practitioner architect, a green building expert from GBCI, and a glass material vendor. The results confirm that a WWR range of 20-60% is the optimal efficiency zone for balancing daylighting and cooling loads. Among the tested materials, Sunergy Blue Green (Low-E) is the most recommended choice due to its low U-Value (4.1 W/m2K) and Shading Coefficient (0.43), which effectively reduces heat gain without compromising visual quality. The study concludes that WWR and material performance are interdependent; higher WWR can still achieve energy efficiency if paired with high-performance glazing.
References
Ahmed, A. E., Suwaed, M. Sh., Shakir, A. M., & Ghareeb, A. (2025). The Impact of Window Orientation, Glazing, and Window-To-Wall Ratio on The Heating and Cooling Energy Of an Office Building: The Case of Hot and Semi-Arid Climate. Journal of Engineering Research, 13(1), 409–422. https://doi.org/10.1016/j.jer.2023.10.034
Alwetaishi, M. (2025). Investigation of The Use of External Insulation Materials in Domestic Buildings in Hot Regions Considering Various Window-To-Wall Ratios (WWR). Case Studies in Thermal Engineering, 74, 106900. https://doi.org/10.1016/j.csite.2025.106900
Gilang Pratama, Johanita Anggia Rini, & Isyrin Yus Fauziah. (2025). Pengaruh Shading Eggcrate dan Pengunaan Kaca Panasap Guna Efesiensi Energi yang di Ukur dengan Nilai OTTV Bangunan Bertingkat Studi Kasus : Brilian Tower. Jurnal Kendali Teknik Dan Sains, 3(2), 01–17. https://doi.org/10.59581/jkts-widyakarya.v3i2.4692
Hajji, A. M., & Hilmi, A. R. Z. (2021). Façade design modification in complying the Indonesia’s national standard of energy conservation for tall building envelope – Case study: Green Office Park 9, Serpong, Indonesia. IOP Conference Series: Earth and Environmental Science, 847(1), 012028. https://doi.org/10.1088/1755-1315/847/1/012028
Hendinata, L. K., Siddiq, N. A., Fikri, A. I. R., Suprapto, M. A., & Prilia, R. (2023). Passive Window Energy Performance in Buildings: Modeling of Apartment Buildings in Indonesia. Journal of Artificial Intelligence in Architecture, 2(2), 1–12. https://doi.org/10.24002/jarina.v2i2.6729
Kaasalainen, T., Mäkinen, A., Lehtinen, T., Moisio, M., & Vinha, J. (2020). Architectural Window Design and Energy Efficiency: Impacts on Heating, Cooling and Lighting Needs in Finnish Climates. Journal of Building Engineering, 27, 100996. https://doi.org/10.1016/j.jobe.2019.100996
Latifah, N. L., & Rahadian, E. Y. (2020). Energy Saving Building Strategies through The Application of Solar Control Glass. ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika, 8(2), 388. https://doi.org/10.26760/elkomika.v8i2.388
Mangkuto, R. A., Rohmah, M., & Asri, A. D. (2016). Design optimisation for window size, orientation, and wall reflectance with regard to various daylight metrics and lighting energy demand: A case study of buildings in the tropics. Applied Energy, 164, 211–219. https://doi.org/10.1016/j.apenergy.2015.11.046
Purwoko, G. H., & Purwanto, LMF. (2022). Pengaruh Window-To-Wall Ratio (WWR) dalam Meningkatkan Efisiensi Energi Bangunan. Vitruvian : Jurnal Arsitektur, Bangunan Dan Lingkungan, 11(2), 133. https://doi.org/10.22441/vitruvian.2022.v11i2.004
Rana, Md. J., & Hasan, Md. R. (2020). The Effects of Thermal Insulation on Energy Consumption in Small Office Buildings in The Context of Subtropical Monsoon Climate. Journal of Construction Engineering, Management & Innovation, 3(4), 275–292. https://doi.org/10.31462/jcemi.2020.04275292
Rana, Md. J., Hasan, Md. R., Sobuz, Md. H. R., & Sutan, N. M. (2021). Evaluation of Passive Design Strategies to Achieve NZEB in The Corporate Facilities: The Context of Bangladeshi Subtropical Monsoon Climate. International Journal of Building Pathology and Adaptation, 39(4), 619–654. https://doi.org/10.1108/IJBPA-05-2020-0037
Salgude, R. R., Sawant, S. D., & Sakhare, V. (2024). Achieving Low Energy and Low CO2 Emission Through Effective Application of Window To Wall Ratio and Window Glass Considering Orientation. Journal of Building Pathology and Rehabilitation, 9(1), 40. https://doi.org/10.1007/s41024-024-00391-w
Syafutri, R., Rahmawati, Y., & Suryabrata, J. A. (2025). Investigating Window Design Impact on OTTV Through BIM Modeling in Warm-Humid Cities. Architecture and Engineering, 10(3), 53–66. https://doi.org/10.23968/2500-0055-2025-10-3-53-66
Syukur, A., Alifia Niza Salafy, & Yenni Yosita br Barus. (2025). Improving Thermal Efficiency Of Subsidized Houses Through Window-To-Wall Ratio Design. Built Environment Studies, 6(1). https://doi.org/10.22146/best.v6i1.20979
Utama, H., & Setyowati, E. (2022). Optimalisasi Konservasi Energi Bangunan Bertingkat melalui Pilihan Material Kaca sebagai Fasad. ARSITEKTURA, 20(2), 353. https://doi.org/10.20961/arst.v20i2.65099
Xue, P., Li, Q., Xie, J., Zhao, M., & Liu, J. (2019). Optimization of window-to-wall ratio with sunshades in China low latitude region considering daylighting and energy saving requirements. Applied Energy, 233–234, 62–70. https://doi.org/10.1016/j.apenergy.2018.10.027
Yetim, E., & Kazaz, A. (2024). The Effect of Opaque-Transparent Surface Ratio on Building Energy Performance. Proceedings of the Creative Construction Conference 2024, null-null. https://doi.org/10.3311/CCC2024-134
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