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All Journal Arsitektura : Jurnal Ilmiah Arsitektur dan Lingkungan Binaan Journal of Architectural Research and Design Studies
Gbran, Hassan
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Arts Humanities Civil Engineering, Building, Construction & Architecture Engineering Environmental Science

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Innovative Strategies for Improving Energy Efficiency and Thermal Comfort in Heritage Buildings: A Case Study of Lawang Sewu Gbran, Hassan; Rukayah, Siti; Suprapti, Atiek; Pandelaki, Edward Endrianto
Journal of Architectural Research and Design Studies Vol. 10 No. 1 (2026): May
Publisher : Departement of Architecture, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jars.vol10.iss1.art2

Abstract

This study introduces a novel integration of dynamic electrochromic glazing and CIGS photovoltaics tailored to the tropical heritage context of Lawang Sewu, aiming to provide a replicable retrofit model for similar Southeast Asian climates, focusing on Lawang Sewu, a colonial-era landmark in Semarang, Indonesia. The research integrates field measurements, simulation analyses, and retrofit modelling to assess indoor environmental quality across four functionally distinct rooms over one year. Retrofit interventions included electrochromic glazing, energy recovery ventilation, and Copper Indium Gallium Selenide (CIGS) photovoltaic systems—a flexible thin-film solar technology suitable for heritage facades. Results revealed that electrochromic glazing reduced heating demands, while PV integration achieved up to 90.46% annual energy savings. Seasonal variation and occupancy patterns were found to significantly influence thermal conditions. The PA_RN package—combining passive and renewable solutions—was identified as the optimal retrofit approach, balancing energy performance, thermal comfort, and heritage aesthetics. The study underscores the potential for achieving sustainability in heritage structures through context-sensitive retrofitting, offering a replicable model for similar buildings in tropical climates.
From Physical Models to Innovations: Technology Advances in Architectural and Civil Engineering Gbran, Hassan
Arsitektura : Jurnal Ilmiah Arsitektur dan Lingkungan Binaan Vol 22, No 1 (2024): Arsitektura : Jurnal Ilmiah Arsitektur dan Lingkungan Binaan
Publisher : Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/arst.v22i1.81909

Abstract

This study delves into the profound impact of physical prototypes on engineering design. It explores their historical and ongoing relevance in advancing architectural and civil engineering. The author emphasizes the critical role of measurement prototypes in pioneering engineering endeavors, highlighting their importance in validating innovative designs and ensuring operational integrity and safety. Through illustrative examples from structural engineering and architectural acoustics, the study underscores the enduring significance of physical models in engineering innovation. It provides valuable insights into the symbiotic relationship between physical prototypes and engineering theory, shedding light on their multifaceted role in propelling engineering advancements. Ultimately, the analysis offers a nuanced understanding of the integral contribution of physical prototypes to the advancement of the engineering discipline
Co-Authors Atiek Suprapti Edward Endrianto Pandelaki R Siti Rukayah