Evaluation of Building Envelope Performance of Shophouses as an Energy-Saving Measure (Case Study: Coffee Shop in Lamgugop, Banda Aceh City)

Hannisa Handri; Intan Agustina Pratiwi; Muhammad Rasyidul Ilmi; Achnia Tiffany Nurfadillah; Musyaffa Rifqi Harimardika

doi:10.30998/rvydek03

Authors

Hannisa Handri Riau University Author
Intan Agustina Pratiwi Riau University Author
Muhammad Rasyidul Ilmi Riau University Author
Achnia Tiffany Nurfadillah Riau University Author
Musyaffa Rifqi Harimardika Riau University Author

DOI:

https://doi.org/10.30998/rvydek03

Keywords:

Energy Efficiency, OTTV, Shading Simulation, Solar Panel

Abstract

Banda Aceh City as a tropical region receives constant sunlight for ±12 hours per day throughout the year. This causes high levels of heat radiation and air humidity in the area. To create thermal comfort in buildings, people use artificial ventilation systems such as fans and air conditioners. Dependence on electrical energy, which is mostly sourced from fossil fuels, needs to be minimized through energy saving strategies. This study aims to evaluate the energy efficiency of a commercial building in the form of a two-story coffee shop in Lamgugop, Banda Aceh City, through analysis of the Overall Thermal Transfer Value (OTTV) value, shading simulation, and estimation of solar panel requirements. A quantitative approach was used by collecting primary data (building dimensions, orientation, facade materials) and secondary data (local climate and SNI 03-6389:2011 standards). The results show that the OTTV value of 38.7 W/m² exceeds the standard threshold, which indicates low thermal efficiency of the building. Suggested improvement strategies include the use of Low-E glass, reducing the Window to Wall Ratio (WWR), and adding shading devices. Solar simulations show that shading elements are effective in reducing direct radiation load into the space. Furthermore, to meet energy needs independently, 135 solar panels with a capacity of 100 Wp and 26 batteries with a capacity of 12–175 Ah are required. The benefits of this research are to provide practical recommendations for building designers and owners in implementing energy-saving strategies, as well as serve as an academic reference in developing studies on building energy efficiency in tropical regions.

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Author Biographies

Hannisa Handri, Riau University

Program Studi Arsitektur, Universitas Riau
Intan Agustina Pratiwi, Riau University

Program Studi Arsitektur, Universitas Riau
Muhammad Rasyidul Ilmi, Riau University

Program Studi Arsitektur, Universitas Riau
Achnia Tiffany Nurfadillah, Riau University

Program Studi Arsitektur, Universitas Riau
Musyaffa Rifqi Harimardika, Riau University

Program Studi Arsitektur, Universitas Riau

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