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All Journal Journal of Artificial Intelligence in Architecture Arsir: Jurnal Arsitektur Jurnal Arsitektur ARCADE
Hariyadi, Agus
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Arts Civil Engineering, Building, Construction & Architecture Computer Science & IT

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THERMAL PERFORMANCE: INFLUENCE OF MATERIAL AND INCLINATION ANGLE ON VAULTED ROOFS IN TROPICAL CLIMATE Muri, Ilham Sukarno Puji; Hariyadi, Agus
Jurnal Arsitektur ARCADE Vol 8 No 3 (2024): Jurnal Arsitektur ARCADE September 2024
Publisher : Prodi Arsitektur UNIVERSITAS KEBANGSAAN

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstract: Rapid urbanization demands significant growth in basic infrastructure, particularly in affordable housing. Concurrently, the escalating development necessitates an increased demand for energy. Among the strategies to mitigate high energy consumption is the optimization of building envelopes, such as roofs which experience the highest solar gain in tropical regions. This research aims to identify the effect of inclination angle and material of roof on thermal performance in tropical climate. Five configurations of roof inclination angles with various materials, facing both North-South and East-West orientations, were analyzed using Ladybug and Honeybee Tools. The results revealed that roof inclination angle, material significantly affect the average conduction. In a sequential order, the roofing materials with the lowest average conductivity values are concrete tiles, clay tiles, PVC roofs, and metal roofs. A greater inclination angle correlates with a lower average conductivity value, indicative of enhanced thermal performance, and vice versa. Roofs with inclination angles > 0°, featuring the same material, oriented North-South exhibit lower average conductivity compared to those facing East-West.Keyword: Thermal Performance, Roof Inclination Angle, Roof MaterialsAbstrak: Urbanisasi yang pesat menuntut pertumbuhan infrastruktur dasar yang signifikan, khususnya perumahan yang terjangkau. Pada saat yang sama, peningkatan pembangunan memerlukan peningkatan kebutuhan energi. Salah satu strategi untuk memitigasi konsumsi energi yang tinggi adalah optimalisasi selubung bangunan, seperti atap yang memperoleh perolehan sinar matahari tertinggi di wilayah tropis. Penelitian ini bertujuan untuk mengetahui pengaruh sudut kemiringan dan material atap terhadap kinerja termal pada iklim tropis. Lima konfigurasi sudut kemiringan atap dengan material berbeda, menghadap orientasi Utara-Selatan dan Timur-Barat, dianalisis menggunakan Ladybug dan Honeybee Tools. Hasil penelitian menunjukkan bahwa sudut kemiringan atap, material berpengaruh nyata terhadap konduksi rata-rata. Secara berurutan, bahan atap dengan nilai konduktivitas rata-rata paling rendah adalah genteng beton, genteng tanah liat, atap PVC, dan atap metal. Sudut kemiringan yang lebih besar berkorelasi dengan nilai konduktivitas rata-rata yang lebih rendah, yang menunjukkan peningkatan kinerja termal, dan sebaliknya. Atap dengan sudut kemiringan > 0°, dengan bahan yang sama, berorientasi Utara-Selatan menunjukkan konduktivitas rata-rata lebih rendah dibandingkan atap yang menghadap Timur-Barat Kata Kunci: Kinerja Termal, Sudut Kemiringan Atap, Material Atap
The Influence of Inlet and Outlet Ratios on the Performance of Natural Ventilation in Mosque, Indonesia Ahmadi, Imron; Hariyadi, Agus
Journal of Artificial Intelligence in Architecture Vol. 4 No. 2 (2025): Artificial Intelligence for Transformative Architecture: Integrating AR, Comput
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jarina.v4i2.11420

Abstract

Natural Ventilation is a sustainable passive strategy for enhancing thermal comfort and reducing energy consumption in buildings with fluctuating occupancy levels, such as mosques. This study investigates the effects of varying inlet-to-outlet opening ratios using different schemes, simulated through Computational Fluid Dynamics (CFD) with the RANS model via OpenFOAM (Butterfly plugin in Grasshopper). Based on urban wind profiles, this research evaluates wind-driven Ventilation under isothermal conditions. The simulation examines five inlet-outlet opening ratios (ranging from 1:1 to 1:5), two inlet configurations (single vs. double), five building lengths (5×10, 10×10, 15×10, 20×10, and 25×10 m), and three building heights (3 m, 4 m, and 5 m). Results indicate that an opening ratio of 1:3 provides the optimal balance between airflow efficiency and thermal stability, particularly concerning solar radiation effects. The single-inlet configuration yields higher air velocity at standing height (1.1 m), whereas the double-inlet setup promotes a more uniform vertical airflow distribution. Increasing building height enhances airflow due to reduced ground-level resistance, while elongated floor plans (over 10 m in length) experience flow stagnation in the central zone. These findings underscore that optimal natural ventilation in mosques depends on opening ratios, spatial proportions, and inlet configurations. Such insights contribute to climate-responsive mosque design, especially in dense urban environments, supporting energy-efficient and comfortable indoor conditions during congregational prayers.
Pengaruh Konfigurasi Balkon Dalam terhadap Kinerja Energi Pendinginan pada Bangunan Hunian Vertikal di Indonesia Nurma Prasetyo, Ade; Hariyadi, Agus
Arsir: Jurnal Arsitektur Vol 9 No 1 (2025): Arsir
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/arsir.v9i1.287

Abstract

Buildings in major Indonesian cities are projected to be dominated by vertical housing such as public housing, which is anticipated to make up most building stock. Buildings contribute to around 40% of global primary energy consumption and account for one-third of CO2 emissions, both of which can significantly impact global warming. One consequence of this is the rise in ambient temperatures, which drives the increased use of active cooling solutions like air conditioning (AC) to counter thermal discomfort caused by global warming. Post-COVID-19, the shift toward more indoor activities has further fuelled the demand for cooling. One solution to reduce this demand is through passive design, utilizing economical shading elements on the building envelope. Building facades—covering the front, sides, and rear—interact directly with the external environment, and this study focuses on the configuration of recessed balconies. The study uses simulation methods with software such as Rhinoceros and Grasshopper, employing the Honeybee and Ladybug plugins to run EnergyPlus simulations. Simulation results show that recessed U-shaped balconies improve cooling energy performance as their depth increases. This improvement is attributed to the higher conductivity of deeper walls at night. The use of recessed balcony types can reduce cooling energy for units with recessed balcony placements, without altering room layouts.
Co-Authors Ahmadi, Imron Muri, Ilham Sukarno Puji Nurma Prasetyo, Ade