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Optimalisasi Konservasi Energi Bangunan Bertingkat melalui Pilihan Material Kaca sebagai Fasad Hari Utama; Erni Setyowati
Arsitektura : Jurnal Ilmiah Arsitektur dan Lingkungan Binaan Vol 20, No 2 (2022): 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.v20i2.65099

Abstract

Box-shaped buildings covered by glass and minimal shading elements are increasingly common, then causes more large building energy consumption. This research aims to analyze the selection of the most optimal glass material for the Undip Integrated Laboratory Building, so that the Overall Thermal Transfer Value (OTTV) of the building is expected to meet the SNI 6389:2020 standard. The research was conducted with an experimental quantitative approach using a spreadsheet calculator OTTV Microsoft Excel of the Ministry of Public Works and Housing. The simulation is divided into three treatment variations, namely variations in BNFL glass thickness; variations in the color of Panasap's glass; and various types of glass. The results show that glass materials with good thermal properties have low shading coefficient (SC), solar factor (SF), and U-value. In addition, the brighter and thicker the glass material, the better the thermal performance. The Undip Integrated Laboratory Building has a total OTTV that meets SNI 6389:2020 standards. However, if viewed partially, the OTTV of the east facade of the building needs to be retrofitted.
Net-Zero energy strategies for tropical hotels using passive design and PCM-Based envelope systems Hepi Duchovny Young; Erni Setyowati; Eddy Prianto; Agung Dwiyanto
ARTEKS : Jurnal Teknik Arsitektur Vol 11 No 2 (2026): ARTEKS : Jurnal Teknik Arsitektur | April 2026 ~ June 2026
Publisher : Program Studi Arsitektur Fakultas Teknik Universitas Katolik Widya Mandira

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30822/arteks.v11i2.4720

Abstract

Motivated by the advancement of the net-zero hospitality concept in Indonesia, and considering the relatively high average humidity levels found in tropical countries with varied climatic conditions, this study examines the effects of integrating phase change materials (PCMs) into hotel building envelope systems across six Indonesian cities representing a wide range of tropical climate classifications (Af, Am, Aw, and Bsh). The objective is to improve total energy consumption (TEC), life cycle cost (LCC), and carbon dioxide (CO?) emissions performance. This research evaluates the efficiency of PCM-reinforced wall systems under two dual-objective optimization scenarios: (1) TEC versus LCC and (2) TEC versus CO? emissions, using an integrated simulation framework combining DesignBuilder, EnergyPlus, and a multi-objective genetic algorithm (NSGA-II). The results indicate that PCM integration can substantially enhance total energy savings and reduce CO? emissions by up to 47.80 percent and 52.96 percent, respectively, particularly in earth-based and masonry wall assemblies. Significant economic benefits were also identified, with life cycle cost savings reaching up to 29.62 percent and reductions in the average tariff cost per square meter of approximately 22.15 percent in high-tariff zones, such as Denpasar, when these construction systems are applied. The optimal PCM configurations were found to be climate-dependent, performing most effectively with external PCM placement and melting temperature ranges between 23 and 29°C. Overall, the findings demonstrate that PCM integration can provide sustainable, cost-effective, and climate-responsive building envelope solutions for the hospitality sector in tropical regions. Furthermore, the study presents a robust optimization framework that is scalable for both retrofit applications and new construction, supporting Indonesia’s ecotourism development and zero-emission building agenda.
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Qodir Abdul Qodir Adelina Noor Rahmahana Adelina Noor Rahmahana, Adelina Noor Adityo Fajar Vakumoro Agitta Raras Putri Agitta Raras Putri Agung Dwiyanto Anggana Fitri Satwikasari Annisa Dwi Hariyanti Ardi Sandriya Aseani, Wingky atik suprapti Ayudia Kanthi Lestari, Ayudia Kanthi ayuta lestariani Ayuta Lestariani bagas laksawicaka Bambang Setioko Bambang Sujono Bambang Supriyadi Budi Sudarwanto Denny Nugroho Sugianto Dewi Setyaningrum Dwijayanti, Rts. Sherly Dyah Hendrawati Eddy Indarto Eddy Prianto Erni Dwi Puji Setyowati, Erni Dwi Puji Evi Puspitasari Fariz Nizar Fisa Savanti Gagoek Hardiman Hana Faza Surya Rusyda Hapsari Dewi Puspitorini Hardiman, Gagok Hari Utama Hariyanti, Annisa Dwi Hartawan, Varian Dedy Hasliza Marshalita Hendro Trilistyo Hepi Duchovny Young Heri Sugianto HERMAWAN Hermawan Hermawan Ikhwanul Ahfadz, Ikhwanul Indah Susilowati Indriastjario Indriastjario Jantu, Mochamad Athar jumratul akbar, jumratul Jundi Jundullah Afghani Karomah, Uli Kartika Putri, Tabita Febriawaty Kusumastuti, Diana Masrokan Masrokan Masrokan, Masrokan Nashrullah Dahlan Lubis Nauvaldy Amru Tsani Nizar, Fariz Norhayati Mahyuddin Odi Andanu Pramono, Syaref Prasetyo, Kukuh Dwi Prita Shintania, Prita Putri, Agitta Raras Rahmalia Fajri Setiani, Rahmalia Rahmat Hidayat Reza Alvi Yulita samia saragi Sari, Suzanna Sasmito, Adi satriya wahyu firmandani, satriya Septana Bagus Pribadi Septana, Septana Simarmata, Karina Siti Roudhotul Jannah, Siti Roudhotul Sri Yuliani Sri Yuliani Subrata Aditama Kittie Aidon Uda sukawi sukawi Suryono Suryono Sutrati Melissa Malik Suzanna Ratih Sari Suzanna Ratih Sari Wahyu Setia Budi Wibowo, Danang Rujito Wijayanti Wijayanti Wingky Aseani Wiwik Setyaningsih Yashinta I.P. Hematang Yudi Kurnia