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Hidayat, Muhammad Syarif. "Studi Overall Thermal Transfer Value (OTTV) di Gedung Kampus Universitas." Metrik Serial Teknologi dan Sains 3, no. 2 (2022): 1–7. http://dx.doi.org/10.51616/teksi.v3i2.344.
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Perkembangan waktu yang cepat dalam ruang itu sendiri menjadi perhatian khusus untuk arsitektur hemat energi. Sistem biaya dapat dilakukan dengan pengaturan beban dan penggunaan sistem pengendalian udara yang sesuai. Untuk mengurangi beban panas luar, Badan Standardisasi Nasional Indonesia dalam SNI 03-6389-2000 tentang Konservasi Energi Lembaran Bangunan yang digunakan dalam Total Thermal Transfer Price (Total Thermal Transfer Value/OTTV) adalah 35 Watt/m². Untuk mencapai kualifikasi Bangunan hemat energi diperlukan parameter energi energi. Jenis energi yang digunakan antara lain kaca dinding atau Window to Wall Ratio (WWR), jenis, warna dinding terang dan luar, pelindung, konduktansi kaca, insulasi atap dan dinding, perbaikan atap dan dinding, arah hadap dan banyak lagi. Penerapan konsep hemat energi pada sektor bangunan akan berpengaruh signifikan terhadap keberlanjutan energi. Salah satu upaya energi pada bangunan gedung adalah dengan mengurangi beban luar. Dalam penelitian ini akan dikaji bagaimana nilai OTTV pada fasad gedung kampus Universitas Mercu Buana Jakarta Barat. Nilai OTTV akan dibandingkan dengan standar OTTV sesuai SNI.
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Sudprasert, Sudaporn, and Sivayu Klinsmith. "Assessment of Overall Thermal Transfer Value (OTTV) in Buildings with Inclined Glass Wall." Journal of Architectural/Planning Research and Studies (JARS) 11, no. 1 (2014): 109–18. http://dx.doi.org/10.56261/jars.v11i1.23882.
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The Ministry of Energy of Thailand promulgated the criteria for computing the Overall Thermal Transfer Values (OTTV) to manage building energy efficiency in 1992. These criteria were improved in 2009 to cover dissimilar heat transfer rates in the daytime and the nighttime for offices, stores and hotels constructed with 0 to 90-degree roofs and walls. However, the assessment of OTTV of buildings with wall inclinations greater than 90 degrees has been excluded with only approximate values being used in the calculation. The objective of this paper, therefore, is to propose a calculation method of Effective Solar Radiation (ESR), a variable in OTTV equation, for office buildings with 105-150 degree wall inclinations, taking into account the effects of ground reflectance values of 0.05, 0.2 and 0.32 for water, grass, and white concrete, respectively. The ESR values for the inclined glass wall were obtained from the slope of linear relationship between the simulated solar heat gain and the glass’s Solar Heat Gain Coefficient (SHGC). The simulated results and the regression analysis showed that the derived ESR values of the vertical wall were compatible with the ESR values in the building energy code (BEC) and the energy used index, similar to that obtained from energy audits. The ESR values decreased by 2.7-37% as the glass wall inclination increased, resulting in a decrease of the OTTV by 2.0-17%. For the high ground reflectance of 0.32 and SHGC of 0.54, the results showed that the OTTVs of the building with inclined walls exceeded 50 W/m2. Therefore, grass and water are recommended for the landscape around energy efficient buildings.
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Yaakob, Yusli. "Overall Thermal Transfer Value: A Preliminary Study of Residential Building in Hot-Humid Climate." Scientific Research Journal 22, Special Issue (2025): 189–205. https://doi.org/10.24191/srj.v22is.12788.
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Malaysia buildings have high intensity of solar radiation and high daily air temperature. Due to excessive heat and high air temperature can cause discomfort, and the occupants need to use the air-conditioning system. The use of air-conditioning has influence to increasing the energy consumption in buildings. To tackle this issue, the Overall Thermal Transfer Value (OTTV) standard as an assessment tool is used to measure of heat gain in the building. OTTV standard is applicable to minimize energy consumption of air conditioning. This study aimed to investigate the OTTV in single terrace house. The method used in this study is by direct calculation. The OTTV was calculated for two cases, namely case study model A and model B. The study considered parameters of building envelope such as window-to-wall ratio. U value, glazing material, and fenestration orientation. Through OTTV calculation, the result for case study model B in the southeast direction is 53.51 W/m2. Solar radiation through fenestration was contributor to the increasing of OTTV. Then, the total OTTV result for case study model A and model B was 22.86 W/m2 and 23.26 W/m2, respectively. The results showed that the building met the minimum requirements for the OTTV, less than 50W/m2. This study shows that some design consideration in building envelope have influence on the OTTV.
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Sari, Tri Wulan, Dyah Nurwidyaningrum, Jonathan Saputra, Denny Yatmadi, and Sujito Sujito. "ANALYSIS OF THERMAL TRANSFER VALUES IN TEACHING CLASSROOMS." AL ULUM: JURNAL SAINS DAN TEKNOLOGI 10, no. 2 (2024): 54. http://dx.doi.org/10.31602/jst.v10i2.15679.
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Erratic weather, such as intense heat followed by heavy rain, is causing air pollution in the sky of Jakarta. According to the SNI 03-6389-2011, which deals with energy conservation in building envelopes, the overall thermal transfer value (OTTV) for walls should not exceed 35 W/m2. This study aims to analyze OTTV in Class T and Class S. Class S uses clear glass, while Class T has a shading device in the form of a sunglass sticker. The method used involves calculating the total outer wall area, glass area, window-to-wall ratio (WWR), solar factor value, and then obtaining the OTTV. The results of the study show that the WWR value for Class T was 0.5, while for Class S it was 0.4. The OTTV value in Class T is 58.74 W/m2, whereas the OTTV in Class S is 70.64 W/m2. Despite both classrooms not meeting the SNI requirements, the classrooms using shading devices have OTTV values closer to the SNI standard.
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Vighio, Anees Ahmed, Rozana Zakaria, Faridahanim Ahmad, et al. "Overall Thermal Transfer Analysis of Glazing Facade Design for Passive Building Energy Efficiency." Civil and Environmental Engineering Reports 34, no. 4 (2024): 503–20. https://doi.org/10.59440/ceer/193131.
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The global warming incremental impacts such as temperature, precipitation, rise in sea level, and extreme weather events are indeed being observed globally. In recent decades, energy demand and greenhouse gas emissions have increased due to buildings being designed with active cooling and heating solutions, despite global attempts to reduce energy consumption. About 50 percent of all energy use is attributed to buildings. There has been a debate for Decades on building active and passive design, but very limited studies have been carried out to confirm the Overall Thermal Transfer Value (OTTV) during the operation phase of the building. This paper highlights the analysis of OTTV in the Passive Design Strategies using several conditions of glazing facades. The passive design of glazing facade strategies includes the variation in opaque wall Colour with different values of the coefficient of solar absorption, change in glazing type (U-Value and Shading Coefficient), and the decrease in the size of the openings. Building parameters were collected and OTTV was determined using the equation in Malaysian Standard MS 1525 for Energy Efficiency. The OTTV was then compared to the recommended value for Malaysia’s tropical climate. Results showed that different paint Colours improved OTTV by up to 23.05%, changing glazing type reduced OTTV from 76.93 W/m² (Base case) to 64.12 W/m² (Double Low-E, e2=.1 Tint green), and reducing glass area by 10% lowered OTTV to 62.24 W/m².Whereas, by combining the Type of Glazing and White facade Colour the OTTV was reduced to 39.68%. It is concluded that this OTTV analysis enhances building energy efficiency and reduces cooling loads.
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Hasanah, Dita, Adi Safyan Yahya, and Eri Saputra. "Analisa Nilai OTTV (Overall Thermal Transfer Value) pada Bangunan Pemerintahan di Kota Lhokseumawe." ETNIK: Jurnal Ekonomi dan Teknik 2, no. 10 (2023): 966–76. http://dx.doi.org/10.54543/etnik.v2i10.254.
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Global warming and the energy crisis are the biggest problems in the world today, many efforts must be made to avoid them. One of them is by continuing to increase the implementation of energy efficient buildings. In Indonesia, energy-efficient buildings must meet the requirements set out in SNI 03-6389-2020 where the maximum limit for the OTTV (Overall Thermal Transfer Value) value is 35 Watt/m² and has been enforced by the Government from now on. However, these requirements have not been fully fulfilled by investors, as well as planning agencies or consulting units. There are still many buildings whose OTTV value is not yet known. As is the case with the object of this research, namely the Lhokseumawe Mayor's Office building. This research aims to calculate and determine the OTTV value for the research object of the Lhokseumawe Mayor's Office building, so that later it will be known whether the building is categorized as an energy efficient building or not. The research method used is an experimental quantitative method using the OTTV Microsoft Excel spreadsheet calculator from the Ministry of Public Works and Public Housing (BGH-PUPR). The results of this research analysis show that the Lhokseumawe Mayor's Office building has many large openings and has sunlight fenestration, so that the overall OTTV value on the building envelope is below the SNI standard threshold of 35 Watt/m² and can be categorized as an energy efficient building.
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Ismail, Amirul Amin, and Azman Zainonabidin. "OVERALL TRANSFER THERMAL VALUE (OTTV) INDEX ASSESSMENT ON 4G11 TOWER, MINISTRY OF WOMEN FAMILY AND COMMUNITY DEVELOPMENT, PUTRAJAYA, MALAYSIA." Malaysian Journal of Sustainable Environment 1, no. 1 (2019): 106. http://dx.doi.org/10.24191/myse.v1i1.5564.
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In the Eleventh Malaysia Plan, Malaysia will be pioneering a sustainable city development by retrofitting all Government buildings to be energy efficient. Overall Thermal Transfer Value (OTTV) is a measuring tool of thermal efficiency for building envelope. A case study on iconic 4G11 Tower is carried out to determine the possibility of improving OTTV assessment for existing high-rise office building thus enhance the building’s overall efficiency. Through this exercise, several variables influence the OTTV score such as U-Value, Shading Coefficient (SC) and Window-to-Wall Ratio (WWR). Characterised by Baseline Design, MS1525 Design and Platinum Design, this will be a precedent of OTTV assessment for high-rise office building typology.
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Chow, W. "Controlling building energy use by Overall Thermal Transfer Value (OTTV)." Energy 25, no. 5 (2000): 463–78. http://dx.doi.org/10.1016/s0360-5442(99)00079-1.
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Mas'um, Iyad Naufal, Ria Rezky Amalia, and Gusti Hardyanti Musda. "Analisis OTTV (Overall Thermal Transfer Value) sebagai Pendekatan Arsitektur Hemat Energi pada Selubung Bangunan Museum Kota Makassar." Jurnal Ilmu Pengetahuan dan Teknologi 8, no. 2 (2024): 7–11. https://doi.org/10.31543/jii.v8i2.341.
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Salah satu bentuk pendekatan dalam penerapan konsep arsitektur hemat energi adalah dengan menganalisis OTTV pada selubung bangunan guna mengetahui tingkat kenyamanan yang ada pada bangunan tersebut. Tujuan dari penelitian ini adalah untuk menghitung nilai OTTV (Overall Thermal Transfer Value) pada selubung bangunan Museum Kota Makassar sebagai pendekatan terhadap arsitektur hemar energi. Metode yang digunakan pada penelitian ini yaitu metode kuantitatif dengan menghitung nilai OTTV menyesuaikan rumus sesuai dengan sumber literatur. Dari hasil penelitian ditemukan bahwa nilai OTTV pada selubung bangunan Museum Kota Makassar mempunyai angka yang sangat jauh dari standar SNI yaitu 45 45 Watt/m2. Oleh karena nya, diperlukan intervensi yang tepat agar bisa menerapkan konsep aristektur hemat energi pada Museum Kota Makassar.
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Fitria Syafutri, Rissa, Jatmika Adi Suryabrata, and Yani Rahmawati. "Developing The Building Envelope Thermal Transfer Value Calculator Based on BIM-VPL Framework." International Journal of Application on Sciences, Technology and Engineering 1, no. 1 (2023): 343–49. http://dx.doi.org/10.24912/ijaste.v1.i1.343-349.
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The use of formula to calculate OTTV (Overall Thermal Transfer Value) for buildings in Indonesia is written in the SNI (Indonesia National Standard) 6389:2020 document. There are at least 3 equations and 7 tables that require to refer for calculating the thermal transfer value of the building envelope. The series of formulas is quite time consuming and prone to human error if it is done repeatedly at the building design stage. This study aims to develop an OTTV formula based on the SNI 6389:2020 so that the OTTV calculation process can be carried out more effectively. The formula development process has done using the Autodesk Revit 2019 and Autodesk Dynamo 2.2 applications. From the studies that have been conducted, 11 scripts were written to calculate OTTV semi-automatically.
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Iqbal, Muhammad. "OVERALL THERMAL TRANSFER VALUE Studi Kasus : Ruang Kuliah III Pada Program Studi Arsitektur Universitas Malikussaleh." Jurnal Arsitekno 5, no. 5 (2019): 32. http://dx.doi.org/10.29103/arj.v5i5.1227.
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Sistem tata udara menggunakan 50-70% energi dari seluruh energi listrik yang digunakan dalam bangunan perkantoran. Beban internal dari gedung internal, yaitu beban yang ditimbulkan oleh lampu, penghuni dan peralatan lain yang menimbulkan panas dan beban eksternal yaitu panas yang masuk dalam bangunan yang diakibatkan oleh radiasi matahari, konduksi dan ventilasi / infiltrasi melalui selubung bangunan. Untuk mengurangi beban eksternal, SNI 03-6389-2000 menentukan kriteria disain yaitu Keseluruhan Thermal Transfer Value (OTTV) harus lebih kecil atau sama dengan 45 Watt / m². Untuk memudahkan perencanaan dalam mendukung konservasi energi, penelitian ini berusaha mencari Window to Wall Ratio (WWR) yang dapat memenuhi OTTV yang diperlukan. Studi dilakukan pada salah satu ruang kuliah sederhana di Prodi Arsitektur Fakultas Teknik Universitas Malikussaleh. Hasil penelitian ini menunjukkan WWR lebih kecil atau sama dengan 0,30 menghasilkan nilai OTTV memenuhi persyaratan yang ditentukan oleh SNI 03-6389-2000.
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Mukhtar, Mufliha, Baharuddin Hamzah, and Rosady Mulyadi. "PENGARUH GEOMETRI DAN WINDOW TO WALL RATIO TERHADAP OVERALL THERMAL TRANSFER VALUE DAN KONSUMSI ENERGI PENDINGIN BANGUNAN." Nature: National Academic Journal of Architecture 10, no. 1 (2023): 15–26. http://dx.doi.org/10.24252/nature.v10i1a2.
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Abstrak_ Pada umumnya, bangunan gedung mengonsumsi sekitar sepertiga dari total konsumsi energi dunia. Sebagian besar energi pada bangunan di Indonesia digunakan oleh sistem pengkondisian udara. Salah satu upaya yang dapat dilakukan untuk meminimalisir pemborosan energi pada sistem penghawaan udara bangunan adalah dengan menurunkan OTTV (Overall Thermal Transfer Value) untuk mengurangi panas eksternal yang masuk melalui selubung bangunan. Penelitian ini bertujuan untuk menganalisis seberapa besar pengaruh geometri dan WWR (Window to Wall Ratio) terhadap OTTV dan konsumsi energi bangunan melalui proses perhitungan manual dan simulasi pada software Autodesk Ecotect Analysis. Penelitian ini menggunakan metode kuantitatif eksperimental dengan mengambil Menara Bosowa yang berlokasi di Makassar sebagai objek penelitian untuk dijadikan sebagai variabel kontrol dalam membuat alternatif model bangunan. Hasil penelitian menunjukkan bahwa variasi geometri dan WWR pada bangunan cukup memengaruhi nilai OTTV dan konsumsi energi pendingin bangunan. Semakin kecil rasio antara panjang dan lebar alas serta semakin kecil persentase WWR pada bangunan maka semakin kecil pula nilai OTTV dan konsumsi energi pendingin bangunan. Dari penelitian ini, kombinasi geometri dan WWR paling efektif diaplikasikan pada bangunan ialah kombinasi antara geometri 1:1 dan WWR 15%.
 Kata kunci: Geometri; Konservasi energi; Konsumsi energi pendingin; OTTV; WWR.
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Sani, Andi Asrul, Adelia Enjelina Matondang, Guruh Kristiadi Kurniawan, and Anggi Mardiyanto. "KINERJA TERMAL SELUBUNG GEDUNG KULIAH KOTA BANDAR LAMPUNG ITERA." Jurnal Arsitektur ARCADE 3, no. 3 (2019): 267. http://dx.doi.org/10.31848/arcade.v3i3.303.
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Abstract: The use of glass material should consider the comfort of space in the building. Field of glass is needed as natural lighting and visual facilities between the occupants and the surrounding environment. Its function as natural lighting is often accompanied by an increase in temperature in buildings, considering that Indonesia is a tropical country. Building temperatures that increase due to incoming sunlight can cause discomfort to building occupants. Such conditions make building occupants use air conditioner (AC). The use of air conditioners can increase the value of building energy consumption. For this reason, research on the value of heat transfer in buildings or the value of OTTV (Overall Thermal Transfer Value). OTTV value calculation is done by manual calculation. Bandar Lampung City lecture building at the Sumatra Institute of Technology was chosen as the object of this study. From the results of the study found that the value of heat transfer of a building or OTTV (Overall Thermal Transfer Value) is influenced by the factor of the ratio of the window area to the facade or WWR (Window Wall Ratio) and the shading factor (Shading Coefficient).(Keywords: Keyword: energy consumption, building energy, glass. Abstract: Penggunaan material kaca semestinya mempertimbangkan kenyamanan ruang dalam bangunan. Bidang kaca diperlukan sebagai pencahayaan alami dan sarana visual antara penghuni dan lingkungan sekitar. Fungsinya sebagai pencahayaan alami seringkali disertai dengan peningkatan temperatur pada bangunan, mengingat Indonesia merupakan negara yang beriklim tropis. Temperatur bangunan yang meningkat akibat dari radiasi sinar matahari yang masuk dapat menyebabkan ketidaknyamanan bagi penghuni bangunan. Kondisi seperti itu membuat penghuni bangunan menggunakan air conditioner (AC). Penggunaan air conditioner tersebut dapat meningkatkan nilai konsumsi energi bangunan. Untuk itu dilakukan penelitian mengenai nilai perpindahan panas dalam bangunan atau nilai OTTV (Overall Thermal Transfer Value). Penghitungan nilai OTTV dilakukan dengan penghitungan manual. Gedung kuliah Kota Bandar Lampung di Institut Teknologi Sumatera di pilih sebagai objek dalam penelitian ini. Dari hasil penelitian ditemukan bahwa nilai perpindahan panas suatu bangunan atau OTTV (Overall Thermal Transfer Value) dipengaruhi oleh faktor nilai perbandingan luas jendela terhadap bidang fasad atau WWR (Window Wall Ratio) dan faktor pembayangan (Shading Coefficient).Kata kunci : konsumsi energi, energi bangunan, kaca.
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Kahayanto, Dian Wibowo, Agung Dwiyanto, and Erni Setowati. "PENGGUNAAN DESAIN FAÇADE GANDA KACA DI GEDUNG FAKULTAS PSIKOLOGI UNIVERSITAS DIPONEGORO BERDASARKAN PERATURAN PEMERINTAH." Steam Engineering 5, no. 2 (2024): 125–35. http://dx.doi.org/10.37304/jptm.v5i2.12712.
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Indonesia with its tropical climate should adopt green buildings arranged by the Government Regulation. The green buildings usually use the Double Skin Façade (DF) system to mitigate heat transfer into interior spaces. One of the green buildings at Diponegoro University is the Psychology Faculty. This research aims to analyze this green building based on Government Regulation, such as stipulated in SNI 6389-2011 and the Ministerial Regulation of PUPR of the Republic of Indonesia Number 21, dated 2021, which mandates that the overall heat transfer value of the outer building should not exceed 35 W/m². By applying the descriptive qualitative method, the Overall thermal Transfer Value (OTTV) was measured. The results show that Faculty of Psychology building at Diponegoro University utilizes the DSF system, with stopsol Asahimas dark blue glass as the outer skin and predominantly brick inner skin equipped with operable windows with the Overall Thermal Transfer Value (OTTV) value of 42.6 W/m². However, the comprehensive building OTTV value is 54.94 W/m², classified as non-compliant with green building design criteria based on the Government Regulations.
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Li, D. H. W., J. C. Lam, and S. L. Wong. "Daylighting and its implications to overall thermal transfer value (OTTV) determinations." Energy 27, no. 11 (2002): 991–1008. http://dx.doi.org/10.1016/s0360-5442(02)00067-1.
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Bahdad, Ali Ahmed Salem, Sharifah Fairuz Syed Fadzil, and Hilary Omatule Onubi. "Assessment of the Thermal Performance of Vertical Green Walls Using Overall Thermal Transfer Value Based BIM Simulation Method: Case Study of Residential Buildings in Sub-Tropics." Journal of Daylighting 8, no. 2 (2021): 294–312. http://dx.doi.org/10.15627/jd.2021.23.
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Construction of multifunctional building envelopes using vertical greenery walls (VGW) has emerged as a sustainable green technology to improving cooling efficiency. To attaining the desired level of building cooling performance, VGW and overall thermal transfer value (OTTV) of the walls are useful design factors. The study aims to revise the current VGW evaluation, considering the decreased heat flux due to thermal efficiency of wall construction based on OTTV values. To achieve this, OTTV based Building Information Modelling (BIM) simulation method was proposed using Autodesk-Revit and DesignBuilder simulation based on EnergyPlus. Six wall compositions with various OTTV values of south facade for residential buildings located in sub-tropical in cooling season, were evaluated. The findings demonstrate that in the presence of a green system, a good OTTV value of the exterior walls is required for optimal performance, to keep the space within set point of cooling for long time during the cooling season. The comparisons between the bare walls and the VGW have demonstrated a great variation due to the different OTTV reached up to 6.57% and 18.44% reduction in indoor air temperature. The best combination of VGW resulted a maximum of 1.2°C reduction in indoor air temperature, with number of hours (within 28°C or less) were higher by 2506h, representing 85.59% of the overall number of hours (2928h). Overall cooling energy saving is found as 103.3kwh, representing 13.63% of the total of energy saving, and decreased the heat gained by 38.82%, representing 61.51kwh reduction during cooling season compared to base wall.
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Muhfizaturrahmah, N. Yuniarti, T. Sukisno, and Y. Urdifat. "The influence of Overall Thermal Transfer Value (OTTV) on building energy consumption." Journal of Physics: Conference Series 1833, no. 1 (2021): 012046. http://dx.doi.org/10.1088/1742-6596/1833/1/012046.
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Chow, W. K., and Philip C. H. Yu. "Comment on the Overall Thermal Transfer Value (OTTV) for Building Energy Control." Journal of Architectural Engineering 4, no. 4 (1998): 149–54. http://dx.doi.org/10.1061/(asce)1076-0431(1998)4:4(149).
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Zahari, A. Firman, Rosady Mulyadi, and Nurul Jamala. "The Effect of Shading Devices on OTTV (Overall Thermal Transfer Value) Value of Office Buildings: Case Study of PT Industri Kapal Indonesia (IKI) Building." ASTONJADRO 12, no. 3 (2023): 868–85. http://dx.doi.org/10.32832/astonjadro.v12i3.14255.
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One of the passive design strategies that effectively reduce the heat load on the building envelope, especially in areas with a large surface area of glass shading Device. The research aims to measure the design influence of shading devices against the value of Overall Thermal Transfer Value (OTTV) buildings. Research using quantitative methods, research done by trying Shading devices with Vertical Models, Horizontal multiple fins, and Egg crates, which have the length and slope provided by the Indonesian National Standard SNI. It tests each design shading measured on an impairment basis OTTV the best and best under 45 Watt/m². The results of the study show that shading devices affect the impairment of OTTV. The longer the shading device and the higher the slope, the more effective it is in blocking incoming radiation through the glass surface. Impairment OTTV existing buildings without a shading device have an initial value of 69.572 W/m2, decreased by 55% to 31.57 W/m2. Shading an egg crate with length120 cm with a slope of 40° is the best shading based on a comparative analysis between vertical louver shading and horizontal multiple fin shading. This is due to shading egg crates being able to respond to the sun in incoming low and high altitude angles to minimize or block radiation that enters through the glass surface.
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Hariyanti, Annisa Dwi, Erni Setyowati, and Gagoek Hardiman. "ANALISIS TRANSFER PANAS MENYELURUH PADA SELUBUNG BANGUNAN DI DAERAH TROPIS." Jurnal Arsitektur ARCADE 6, no. 3 (2022): 305. http://dx.doi.org/10.31848/arcade.v6i3.1112.
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Abstract: The creation of architectural works in tropical climates must be appropriate and responsive to the climate. In its application, it is expected to comply with the criteria for green building design requirements in SNI 03-6389-2011 and Regulation of the Minister of Public Works and Public Housing Number: 21 of 2021 concerning Green Building Performance Assessment, namely that the overall heat transfer value of the building envelope does not exceed 35 W/m2. The choice of material used in the building envelope affects the amount of heat transfer value in a building. The building envelope of the Polytechnic of Furniture Industry and Wood Processing Campus Education Building on all four sides are dominated by Asahimas green stopsol reflective glass material with a glass thickness of 8 mm and conwood material in several parts. The amount of heat transfer value is analyzed using quantitative research methods with the calculation of OTTV (Overall Thermall Transfer Value). From the analysis, it is known that the overall OTTV value of the building is 54,94 W/m2, so it does not meet the criteria for green building design requirements. It is necessary to make retrofit design efforts to reduce the OTTV value in order to achieve OTTV value as mentioned in the SNI 03-6389-2011 and Regulation of the Minister of Public Works and Public Housing Number: 21 of 2021.Abstrak: Pembuatan karya arsitektur di iklim tropis harus tepat dan responsif terhadap iklim. Dalam penerapannya diharapkan sesuai dengan kriteria persyaratan perancangan bangunan hijau pada SNI 03-6389-2011 dan Permen PUPR RI Nomor: 21 Tahun 2021 tentang Penilaian Kinerja Bangunan Gedung Hijau, yaitu bahwa nilai transfer panas menyeluruh pada selubung bangunan tidak melebihi 35 W/m2. Pemilihan jenis material yang digunakan pada selubung bangunan berpengaruh terhadap nilai transfer panas pada suatu bangunan. Selubung bangunan Gedung Pendidikan Kampus Politeknik Industri Furnitur dan Pengolahan Kayu pada keempat sisinya didominasi material kaca reflektif stopsol green Asahimas dengan ketebalan kaca 8 mm dan material conwood di beberapa bagian. Untuk mengetahui besarnya nilai transfer panas dilakukan analisa menggunakan metode penelitian kuantitatif dengan perhitungan OTTV (Overall Thermall Transfer Value). Dari hasil analisa diketahui bahwa nilai OTTV keseluruhan bangunan sebesar 54,94 W/m2, sehingga tidak memenuhi kriteria persyaratan perancangan bangunan hijau. Perlu dilakukan upaya retrofit desain untuk menurunkan nilai OTTV tersebut agar mencapai nilai OTTV sesuai SNI 03-6389-2011 dan Permen PUPR RI Nomor: 21 Tahun 2021.
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Yasser Arab, Ahmad Sanusi Hassan, Zeyad Amin Al-Absi, Boonsap Witchayangkoon, and Bushra Qanaa. "OTTV'S Assessment on Thermal Performance of High-Rise Apartment Buildings in Penang." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 102, no. 2 (2023): 21–32. http://dx.doi.org/10.37934/arfmts.102.2.2132.
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This study evaluates the envelope thermal performance of high-rise apartment buildings in Malaysia, which are being largely dominated due to the high economic development and increased population. The evaluation was conducted using the Overall Thermal Transfer Value (OTTV), which is the key tool used in the Green Building Index to assess the Energy Efficiency of buildings. Different high-rise apartment buildings were selected with different architecture styles, to account for several periods of building construction. The OTTV value was calculated for the west-oriented façade of the selected buildings, which is considered as a critical orientation that receives high solar radiation. The results showed that four out of the five investigated buildings achieved the minimum requirements for the OTTV, i.e., less than 50 W/m². The maximum and minimum OTTV values with the buildings’ original design were 82.60 W/m² and 41.54 W/m², respectively. However, one of the buildings achieved a lower OTTV value with the installation of shading devices by the owners, i.e., decreased from 48.39 W/m² to 37.60 W/m². The solar radiation penetration through the fenestration was found to be the major contributor to the total OTTV, while it can be controlled by the shading devices. Besides, using dark paints increased the heat conduction through the opaque walls by more than double compared to light paints. This study shows that some design considerations, such as paint colour, shading devices, and glazing material, can have a great influence on the heat gain in buildings.
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Pamurti, Andarina Aji. "Analisa Penggunaan Energi Pada Gedung Berdasar Overall Thermal Transfer Value (OTTV) di Kawasan Simpang Lima Kota Semarang." G-Tech: Jurnal Teknologi Terapan 7, no. 3 (2023): 939–48. http://dx.doi.org/10.33379/gtech.v7i3.2653.
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Kota merupakan penyumbang penggunaan energi yang besar di bumi. Kawasan Simpang Lima merupakan kawasan pusat kota Semarang yang memiliki beberapa gedung bertingkat dengan dominan material kaca. Desain facade gedung, penggunaan material bangunan dan sun shading device memberikan pengaruh terhadap besarnya penggunaan energi. Tujuan penelitian ini untuk mengetahui penggunaan energi pada gedung di kawasan Simpang Lima Semarang dengan studi kasus Gedung Indosat dan Gedung Bapelkes. Metode penelitian yang digunakan kuantitatif deskriptif dengan perhitungan menggunakan rumus Overall Thermal Transfer Value. Hasil penelitian ini berdasar perhitungan OTTV, penggunaan energi Gedung Indosat Semarang untuk orientasi utara yaitu 83 Watt/m2, orientasi barat 65.7 Watt/m2 dan orientasi timur 75.3 Watt/m2. Gedung Bapelkes Semarang dengan facade utama orientasi timur adalah 68.2 Watt/m2. Jadi Gedung Indosat Kota Semarang dan Gedung Bapelkes Semarang berdasarkan perhitungan OTTV melebihi 35 watt/m2 sehingga termasuk gedung yang penggunaan energi nya besar dan kawasan Simpang Lima memberikan peranan penting dalam besarnya penggunaan energi kota.
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Hendrawati, D., and M. Z. Arientaka. "Building Envelope Performance to Achievement of Energy-Efficient Buildings : a case study analysis in Ulil Albab Mosque Yogyakarta." IOP Conference Series: Earth and Environmental Science 1218, no. 1 (2023): 012040. http://dx.doi.org/10.1088/1755-1315/1218/1/012040.
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Abstract The performance of the building envelope is one of the most important in energy-efficient buildings. As the outermost layer, the building envelope will be very decisive for heat transfer from outside to inside the building. The performance of the building envelope in heat transfer refers to as the Overall Thermal Transfer Value (OTTV). OTTV measures the average heat gain into the building through the building envelope. It is a measure widely adopted in many countries to improve the design of energy-efficient buildings. The OTTV value strongly influences the ratio of transparent openings on the building facade. The size of the transparent opening will affect the inclusion of natural lighting in the building. This study aims to see how closely the relationship between the OTTV value and the achievement of natural lighting in buildings according to standards. The values used as success standards are the GBCI and SNI parameters. This research expects to provide a reference for existing buildings to improve building performance, especially for energy efficiency. This study uses a simulation method with OTTV worksheets and DIAlux Evo calculations. The mosque chooses to be a case study because the mosque is a building that has a distinctive orientation. In this research, Ulil Albab mosque, Yogyakarta, for the case study. For the location of Yogyakarta, the Qibla direction is azimuth direction 294° 42′ 39.894″ (Northwest) from Yogyakarta, where the radiation factor value is the largest. The results of this study indicate that the OTTV value can follow the standard by lowering the percentage of WWR in a facade with a high radiation factor value. Still, a WWR that is too small can result in natural lighting being unable to enter the room. In this building, the most efficient thing to do is replace the transparent material with one with better thermal properties.
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Muhammad Hafeez Abdul Nasir, Ahmad Sanusi Hassan, Mohd Nasrun Mohd Nawi, and Aimi Salihah Abdul Nasir. "Analysis of Hotel Façade Thermal Performance with a Special Reference to the City Hotels in George Town, Penang." Journal of Advanced Research in Applied Sciences and Engineering Technology 28, no. 3 (2022): 199–208. http://dx.doi.org/10.37934/araset.28.3.199208.
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The present study identifies issues pertaining energy efficiency of high-rise city hotels in Malaysia and aims to examine the thermal performance of high-rise hotels with different façade design configurations. Large hotels in the tropics of Malaysia are found to be energy intensive among commercial building categories. The present study proposes two case studies of high-rise city hotels in George Town, Penang, with different façade configurations to determine their capability to comply the Overall Thermal Transfer Value (OTTV) requirements set by the Malaysian Standards MS 1525;14 and the Green Building Index (GBI). Utilizing the OTTV formula as stipulated in the MS 1525:14, the OTTV of each case study was manually calculated using the identified façade design parameters. Comparative analysis of the results indicate that each of the cases garnered OTTV which exceeded the recommended value of 50 Wm-2. General guidelines and recommendations for improvement in the hotel façade design in the tropics are also included in the discussion.
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Nasution, Aulia Muflih, Saufa Yardha Moerni, and Yunita Syafitri Rambe. "Efisiensi Energi Berkelanjutan: Strategi Desain dan Perhitungan Optimalisasi Efisiensi Energi pada Selubung Bangunan." MARKA (Media Arsitektur dan Kota) : Jurnal Ilmiah Penelitian 7, no. 2 (2024): 167–82. http://dx.doi.org/10.33510/marka.2024.7.2.167-182.
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Global warming is an increase in the temperature of the Earth's surface over the last few decades. Building energy consumption is the number two contributor to global warming. About 5-13% of the energy consumed during construction and the remaining 87-95% occur during the lifetime of a building, mainly for heating, cooling, and lighting purposes. This requires the selection of building materials that are certified green or environmentally friendly to help reduce energy consumption. The aim of this study is to evaluate the energy efficiency of a variety of designs of the building cover best in the glass protector as a building wall material. The research method uses comparative research that involves comparing energy efficiency between 4 different designs and materials with the calculation of OTTV on the facade of the building. Overal Thermal Transfer Value (OTTV) is a design parameter used to measure the level of energy efficiency of a building in reducing the heat from sunlight entering through walls and roofs. The results of the study showed massive walls with a 0.8 m high parapet and 1.2 m sharpening (Aluminum 4 mm with semi-flash white paint + 30 mm airspace + 150 mm precast concrete), along with window walls using the Stopray Vision 52 T (8 mm (#2) +12 mm Anti-Shatter+6 mm Clear Glass) and horizontal shading as high as 0.4 m, as well as openings with a configuration of 8 mm (No2) + 12 mm anti-shatter + 6 mm Clear glass, showing that the Overall Thermal Transfer Value (OTTV) reached its peak with a 29% decrease from the standard value. It states the combination of these elements provides optimal thermal performance, minimizing overall heat transfer.
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Eid, A. S., M. M. Aboulnaga, and A. H. Mahmoud. "VPL-based Code Compliance Checking for Building Envelope Design Using OTTV Calculation." IOP Conference Series: Earth and Environmental Science 1056, no. 1 (2022): 012033. http://dx.doi.org/10.1088/1755-1315/1056/1/012033.
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Abstract Building Envelope plays a vital role in reducing thermal loads, minimizing energy consumption, and ensuring sustainability. The Overall Thermal Transfer Value (OTTV) is a recognized method to evaluate the thermal performance of buildings. Building Information Modelling (BIM) has added great value to the AEC industry as an efficient tool to facilitate the building design process. With the development of BIM, more properties and material characteristics are assigned to the project design and building model that are getting more complex. Meanwhile, performing OTTV assessment and checking compliance with the assigned values involving time-consuming calculations with the possibility of ambiguity. Hence, automation of the code compliance checking process has become on-demand within the BIM environment. The objective is to develop a Visual Programming Language (VPL)-based script for automating the OTTV rule-based code compliance checking process. The applied method is to integrate BIM, VPL, and OTTV requirements; and develop a visual script that is responsible for extracting parameters from the BIM model, performing OTTV calculation, comparing output with assigned standard values of OTTV aiming answering the research question whether automated code compliance checking process can contribute to code compliance facilitation effectively. The results indicate that integrating VPL into the code compliance checking process has promising signs in facilitating the compliance checking process, increasing the accuracy and reliability of outcomes.
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Putra, D. A., C. Ichwania, A. R. I. Utami, A. H. D. Abdullah, Suwandi, and A. N. S. Gunawan. "Evaluating the Impact of Biocomposite Brick Materials on The OTTV and Diverse Thermal Characteristics of Rooms in Residential Buildings." Journal of Physics: Conference Series 2673, no. 1 (2023): 012023. http://dx.doi.org/10.1088/1742-6596/2673/1/012023.
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Abstract The development of biocomposite materials for building purposes, including their incorporation in bricks, has gained momentum. Bricks are extensively utilized in residential buildings in Indonesia, making their performance a critical factor. To ensure building performance meets certain standards, Indonesia adheres to SNI 6389:2011, which mandates compliance with the Overall Thermal Transfer Value (OTTV) before construction commences. This study aims to examine the impact of using biocomposite bricks on the OTTV value. Additionally, it investigates the effects on various thermal properties of the room, such as humidity, air temperature, operative temperature, and Mean Radiant Temperature (MRT), which serve as indicators for assessing thermal comfort. The findings demonstrate that the use of biocomposite bricks can reduce the OTTV value by approximately 7.9% - 10.2%. However, there is no significant alteration observed in the physical properties of the room when compared to conventional bricks. As a result, it can be inferred that the use of biocomposite bricks holds promise for further progress in enhancing energy efficiency and addressing environmental concerns.
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Gendo, Ricky, Jimmy Priatman, and Sandra Loekito. "ANALISA KONSERVASI ENERGI SELUBUNG BANGUNAN BERDASARKAN SNI 03-6389-2011. STUDI KASUS: GEDUNG P1 DAN P2 UNIVERSITAS KRISTEN PETRA SURABAYA." Dimensi Utama Teknik Sipil 2, no. 1 (2015): 1–7. http://dx.doi.org/10.9744/duts.2.1.1-7.
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Nowadays, people talk a lot about energy crisis problem. In fact, demand for energy grows every year while this growing demand is not matched by the growth of the energy source. As the impact, future generation will possibly face energy crisis. In Indonesia, the effort to conserve energy still has not been considered by many parties. Just in these recent years, Greenship certification which is awarded by GBCI (Green Building Council Indonesia) to certified green buildings in Indonesia, started to be recognized by project stakeholders and moreover in short time, Greenship will be one of requierements for applying building permit (IMB) in Surabaya. OTTV (Overall Thermal Transfer Value) calculation is one of criteria in Greenship assessment, where heat transfer through the whole building envelope is minimized to reduce building cooling load. The maximum value of OTTV is 35 W/m2 based on SNI 03-6389-2011. This research is conducted to study whether the OTTV of P1 and P2 of Petra Christian University Surabaya building has met this standard or not. If not, OTTV will be minimized by considering the facade material selection.
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LATIFAH, NUR LAELA, and ERWIN YUNIAR RAHADIAN. "Energy Saving Building Strategies through The Application of Solar Control Glass." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 8, no. 2 (2020): 388. http://dx.doi.org/10.26760/elkomika.v8i2.388.
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ABSTRAKSesuai dengan konsep Green Building, desain bangunan harus memperhatikan penghematan energi operasional bangunan. Semakin besar beban termal, maka semakin boros konsumsi energi listrik. Salah satu cara untuk menurunkan energi listrik adalah dengan mengurangi beban termal eksternal, sehingga pemilihan jenis solar control glass merupakan aspek yang sangat penting. Metoda analisis dilakukan secara kuantitatif. Sebagai kasus studi yaitu Gedung Kantor Pengelola Bendungan Sei Gong di Batam, dan berdasarkan perhitungan Calculator OTTV akan ditentukan alternatif solar control glass yang tepat agar memenuhi syarat dengan batas maksimal OTTV di Indonesia (45 Watt per meter persegi). Manfaat penelitian ini adalah memperoleh masukan pemilihan tipe kaca yang tepat berdasarkan SHGC, pada kasus bangunan kantor.Kata kunci: Hemat energi operasional bangunan, Overall Thermal Transfer Value, Solar Control Glass, Solar Heat Gain Coefficient ABSTRACTIn accordance with the Green Building concept, building designs must pay attention to building operational energy savings. The greater the thermal load, the more wasteful the electricity consumption of the AC system. One way to reduce AC loads is to reduce external thermal loads, then choosing the type of solar control glass is a very important aspect. The method of analysis is done quantitatively. As a case study is Sei Gong Dam Management Office Building in Batam, and based on OTTV Calculator calculation an appropriate solar control glass alternative will be determined to meet the requirements with the maximum OTTV limit in Indonesia (45 Watt per square meter). The benefit of this research is to get input on selection of the right type of glass based on SHGC, in the case of office buildings.Keywords: Energy saving on building operation, Overall Thermal Transfer Value, solar control glass, Solar Heat Gain Coefficient
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Chan, A. L. S., and T. T. Chow. "Evaluation of Overall Thermal Transfer Value (OTTV) for commercial buildings constructed with green roof." Applied Energy 107 (July 2013): 10–24. http://dx.doi.org/10.1016/j.apenergy.2013.02.010.
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Vighio, Anees A., Rozana Zakaria, Faridahanim Ahmad, and Eeydzah Aminuddin. "Real-Time Monitoring and Development of a Localized OTTV Equation for Building Energy Performance." Civil Engineering Journal 11, no. 2 (2025): 544–64. https://doi.org/10.28991/cej-2025-011-02-09.
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Global warming negatively impacts indoor environments, affecting human comfort. Despite global efforts, energy demand and greenhouse gas emissions continue to rise. As sustainable building designs become more critical, enhancing energy efficiency through real-time data analytics is essential. The Overall Thermal Transfer Value (OTTV) is a key metric for assessing a building’s energy usage, considering factors like orientation, location, and climate. However, limited research has examined real-time data's impact on OTTV coefficients. Therefore, this research aims at developing and validating new OTTV coefficients using real-time data with the EQUEST simulation engine. The coefficients of OTTV (Equivalent Temperature Difference TDeq, Temperature Difference ∆T, and Solar Factor SF) were monitored in real-time using HOBO Temperature Data loggers and Delta Ohm Photometer for Solar Radiations. Focusing on UTM Eco-Home building, the study calculates heat gain components, including transmission through walls, windows, and radiation heat gain. The findings of the study suggest that the modified OTTV equation accurately determines a building's OTTV, enhancing energy efficiency evaluations. The novelty of the study lies in the development of a new OTTV equation for the specific climate of Johor, Malaysia, and the real-time monitoring of OTTV that helps the energy managers analyze the Thermal Transmittance of Building envelopes in real-time. Doi: 10.28991/CEJ-2025-011-02-09 Full Text: PDF
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Octarino, Christian Nindyaputra, and Henry Feriadi. "EVALUASI KINERJA SELUBUNG BANGUNAN GEDUNG AGAPE UNIVERSITAS KRISTEN DUTA WACANA YOGYAKARTA." LANGKAU BETANG: JURNAL ARSITEKTUR 8, no. 2 (2021): 86. http://dx.doi.org/10.26418/lantang.v8i2.45436.
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Di tengah fenomena perubahan iklim dan pemanasan global, arsitektur sudah semestinya turut berperan dalam menjaga lingkungan dengan menghadirkan desain-desain bangunan yang memiliki performa tinggi, yang dapat memberikan kenyamanan optimal bagi penghuninya tanpa mengorbankan kualitas lingkungan di sekitarnya. Karakter iklim Indonesia yang merupakan iklim tropis menyebabkan tingginya temperatur lingkungan, sehingga berpotensi menimbulkan ketidaknyamanan bagi penghuni bangunan. Upaya dalam meningkatkan kenyamanan tentu akan membutuhkan konsumsi energi yang tinggi, sehingga perlu dipikirkan strategi konservasi energi agar bangunan tidak berdampak negatif terhadap lingkungan. Sebagai bagian dari kompleks Universitas Kristen Duta Wacana Yogyakarta, Gedung Agape adalah gedung dengan fungsi perkantoran yang menggunakan sistem pendingin udara. Setelah digunakan selama 12 tahun, Gedung ini memiliki evaluasi kenyamanan termal yang cukup baik oleh para penghuninya. Namun demikian, diyakini Gedung Agape masih memiliki potensi penghematan energi yang cukup besar melalui kinerja selubung bangunannya. Studi ini bertujuan untuk mengevaluasi bagaimana kinerja selubung bangunan Gedung Agape UKDW dalam fungsinya mereduksi panas dari lingkungan serta menentukan strategi apa saja yang dapat diterapkan untuk menekan nilai Overall Thermal Transfer Value (OTTV) dalam upaya mendukung konservasi energi pada bangunan. Standar Nasional Indonesia tentang konservasi energi Gedung menetapkan nilai OTTV maksimal sebesar 35 W/m2. Berdasarkan hasil perhitungan dengan worksheet, didapatkan nilai OTTV Gedung Agape sebesar 49,06 35 W/m2, cukup jauh dari standar SNI. Beberapa strategi untuk menekan nilai OTTV dicoba disimulasikan melalui modifikasi material bukaan dan penyesuaian window to wall ratio, sehingga pada akhirnya dapat mencapai 34,86 W/m2.EVALUATION OF BUILDING ENVELOPE PERFORMANCE ON AGAPE BUILDING UNIVERSITAS KRISTEN DUTA WACANA YOGYAKARTA In response to the worldwide issue about climate change and global warming, architecture should play a role to protecting the environment by presenting high performance building designs. This kind of building can provide optimal comfort for its occupants without sacrificing the quality of the surrounding environment. The character of Indonesia's tropical climate, causes high environmental temperatures, thus potentially causing discomfort for building occupants. The effort to increase comfort will certainly require high energy consumption, so it is necessary to consider about energy conservation strategies to minimize negative impact on the environment. As a part of Universitas Kristen Duta Wacana area, Agape is an office building that uses air conditioning system. After being used for 12 years, this building has a satisfactory evaluation about the thermal comfort from the occupants. However, it is believed that the building still has considerable potential of energy saving through the performance of the building envelope. This study aims to evaluate performance of Agape Building’s envelope in term of heat transfer reduction and determine strategies that can be applied to reduce the Overall Thermal Transfer Value (OTTV) value to support energy conservation. Indonesian National Standards (SNI) about building’s energy conservation determine a maximum OTTV value of 35 W/m2. Based on calculation, the OTTV value of Agape Building was obtained 49,06 W/m2, has not been able to reach the SNI standard. Several strategies to reduce the OTTV value have been simulated by modifying the opening material and adjusting the window to wall ratio, so that in the end the OTTV value could meet the standards, 34,86 W/m2.
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Rahmanda ; Yasmin Suriansyah, Agung Pyawi. "OTTV OPTIMIZATION FOR ENERGY SAVING OF EMERSIA HOTEL LAMPUNG BASED ON GREENSHIP CRITERIA." Riset Arsitektur (RISA) 5, no. 01 (2020): 18–35. http://dx.doi.org/10.26593/risa.v5i01.4415.18-35.
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Abstract- The energy crisis is caused by uncontrolled energy consumption that is increasing beyond the availability. The biggest energy consumption in buildings is energy to cool the room using Air Conditioning (AC). This happens because the design of the building envelope cannot effectively reduce heat transfer from outside to inside the building. GBCI (Green Building Council Indonesia) determines the appropriate building envelope design standards in conserving energy stated in OTTV (Overall Thermal Transfer Value) not more than 35 Watt / m2.Emersia Lampung Hotel is a 4 star hotel that did renovations in 2012. Judging from the design of the building, the architect is trying to make a hotel that is environmentally friendly. Starting from the north-south building orientation, external shading in each opening, to the addition of secondary skin on the west side of the building. But after calculating the OTTV, the Emersia Hotel building envelope still has problems with the building envelope in reducing heat transfer. The OTTV value of this hotel is still above the criteria of 40.19 W / m2, therefore it is necessary to do research on the building envelope elements in order to reduce the building OTTV value. This study aims to find out the cause of the heat problems that occur and provide suggestions for improvements that can reduce heat transfer in the envelope of the Emersia Hotel Lampung building so that it meets the OTTV value standards issued by the GBCI (Green Building Council Indonesia).The research method used is descriptive-evaluative. The study was conducted by analyzing the elements of the building envelope Emersia Hotel. Then analyze how the effort to reduce heat transfer in the building envelope. The results of the study are recommendations for improvements to the building envelope that can reduce the value of OTTV in Emersia Hotel.The results showed that the main cause of the high heat transfer that occurred in the envelope of the Emersia Hotel Lampung building was a large WWR value on all three sides of the building and lack of sun shade, especially on the east side causing the radiation and conduction value of the window to become large. In addition to these two things, the trees and vegetation around the site are still small so that the area of the site has minimal shadowing and causes high temperatures. Efforts such as reducing the value of WWR to the replacement of glass material with a small Uf value can reduce the value of building OTTV up to 24.05 W / m2. Other efforts such as increasing the shade ratio to changing the orientation of the openings can also reduce the value of OTTV, but the decline does not occur up to the specified OTTV standards.
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Yasser Arab, Ahmad Sanusi Hassan, Zeyad Amin Al-Absi, Hussam Achour, Boonsap Witchayangkoon, and Bushra Qanaa. "Retrofitting of a High-Rise Residential Building for Energy Efficiency with OTTV as an Assessment Tool." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 102, no. 2 (2023): 110–19. http://dx.doi.org/10.37934/arfmts.102.2.110119.
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Buildings account for nearly 50% of the total energy consumption. The use of air-conditioning is one of the major influencers to the high energy consumption in buildings. To tackle this high energy consumption, buildings are required to be more energy efficient. This study aimed to investigate the retrofitting of existing residential building for energy efficiency by using the Overall Thermal Transfer Value (OTTV) as an assessment tool. Various retrofitting measures were involved, including varying the colour of the opaque wall with different solar absorptivity, the U-value and shading coefficient of the Glazing system, and the type and projection of the external shading. The results showed that applying the retrofitting measures individually (i.e., using light colour with low solar absorptivity, replacing the glazing system to have lower shading coefficient and U-value, and the installation of external shading systems with low shading coefficient) can decrease the OTTV by 26% to 33.4%. However, combining these measures managed to decrease the OTTV by up to 75.6% (i.e., the OTTV decreased from 82.87 W/m² to 20.19 W/m²). This can improve the building energy efficiency as it contributes to less cooling load for the air-conditioned buildings, while it provides a better indoor environment in non-air-conditioned buildings.
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Zahrah, Zahrah, and Theresye Yoanita Octora. "Analisis Konservasi Energi Pada Dinding Kaca Ruang Tunggu Bandara Ahmad Yani Semarang." Jurnal Teknik Transportasi 2, no. 2 (2023): 115–27. http://dx.doi.org/10.54324/jtt.v2i2.29.
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The implementation of green building principles in building structures in Indonesia has a positive impact on reducing the effects of global climate change. In this regard, several airports in Indonesia have adopted the green building concept. One example of an airport that has been implemented this approach is Ahmad Yani International Airport, located in Semarang City, Central Java, Indonesia. In this study, an exploratory quantitative approach was used to analyze thermal comfort in buildings using the overall thermal transfer value (OTTV) formula according to SNI 03-6389-2020 guidelines, and utilizing data collected in the field. Furthermore, this study only focuses on the type of glass wall material and certain orientations. Based on the analysis result, it was found that the OTTV value for glass walls reached 54,98 W/m². However, it should be remembered that these result actually exceeds the set standard. However, these result do not actually cover the entire context of OTTV values as a whole, because this study considers one type of material and a certain orientation.
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Wibawa, Baju Arie, and Alif Nur Hutama. "OPTIMALISASI BUKAAN DAN KENYAMANAN RUANG MELALUI ANALISIS OTTV DAN SUN SHADING." MODUL 19, no. 2 (2019): 68. http://dx.doi.org/10.14710/mdl.19.2.2019.68-77.
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The window as the opening of natural lighting is more critical to conserve building energy, but if the size opening is too broad will increase the solar heat into the room. Over of heat, will also cause discomfort in the place because the value of OTTV (overall thermal transfer value) will also increase. The purpose of this study is to identify components, calculate the OTTV value and the analysis of shadow of the sun into the room. In the meeting room of the UPGRIS post-graduate building, there is too many windows that make the room glare and hot. It is felt to affect inefficient artificial energy (Air Conditioning). The method used is a type of quantitative research with an experimental approach. The results of the OTTV study in this room is 52.33 watts/m2, and this is exceeded from SNI (35 watts/m2). This research redesign of windows and shading to comply with maximum standard.
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Utama, Hari, and Erni Setyowati. "Optimalisasi Konservasi Energi Bangunan Bertingkat melalui Pilihan Material Kaca sebagai Fasad." ARSITEKTURA 20, no. 2 (2022): 353. http://dx.doi.org/10.20961/arst.v20i2.65099.
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<p><em>Box-shaped buildings covered by glass and minimal shading elements are increasingly common</em><em>, then</em><em> </em><em>causes </em><em>more</em><em> large building energy consumption. This </em><em>research</em><em> 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.</em></p>
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Wahyudi, Bambang, Abdul Munir, and Mochammad Afifuddin. "EVALUASI NILAI OTTV GEDUNG IGD R.S MEURAXA BANDA ACEH." Jurnal Teknik Sipil 1, no. 4 (2018): 781–98. http://dx.doi.org/10.24815/jts.v1i4.10039.
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Abstract: Emergency Installation Building is one of the existing buildings in the Meuraxa Hospital Complex consisting of several buildings with the location on the Soekarno Hatta street km 2 City Banda Aceh. The tropical climate of Banda Aceh region with temperatures ranging from 25.5 ℃ to 32.5 ℃ is located in the northern hemisphere causing the sun shining 12 hours each day resulting in high consumption of electrical energy caused by the use of artificial weather carriage. The development of the city that seemed modern and futuristic is an architectural phenomenon characterized by the use of dominant glass on the building sheath as well as the facade of RS.Meuraxa Emergency Installation Building. . In the effort of government energy conservation through National Standardization of Indonesia in SNI 03-6389-2011 stated that maximum thermal transfer value limit on the outer wall or called Overall Thermal Transfer Value (OTTV) is 35 Watt / m2. This research aims to generate a reference design of sheath and get the factors that affect the amount of OTTV value from the results of simulating the calculation toward all variables. The calculation result obtained the total value of OTTV is 51,47 Watt/m2. To decrease the result, some variation of modification simulation by inputting all data of the coefficient value of the material which likely to be applied in the design. The simulations consist of Uf modifications (double glazing), Uw (Outer Wall Isolation), WWR (Glass comparison ratio), α (paint color), SC (shield). The simulation results are included in the table and trendline linear graphs so that the slope value is obtained to analyze the influence / significance level toward OTTV value. The result of the research shows that the modification of SC (glass and effective) by installing shade and modification of glass specification greatly influences the decrease of OTTV value in the effort of energy conservation by still presenting the concept of tropical architecture with traditional theme of Aceh.Abstrak: Gedung Instalasi Gawat Darurat merupakan salah satu dari gedung yang ada di Komplek Rumah Sakit Meuraxa yang terdiri dari beberapa bangunan dengan lokasi berada di jalan Soekarno Hatta km 2 Kota Banda Aceh. Wilayah Banda Aceh yang beriklim tropis dengan suhu berkisar antara 25,5 ℃ hingga 32,5℃ berada di belahan bumi Utara menyebabkan matahari bersinar 12 jam setiap harinya terus menerus setiap tahunnya sehingga berdampak pada tingginya konsumsi energi listrik akibat dari penggunaan penghawaan buatan. Perkembangan kota yang berkesan modern dan futuristik merupakan fenomena konsep tampilan bangunan dengan bercirikan penggunaan kaca yang dominan pada selubung bangunan seperti halnya yang diterapkan pada bangunan gedung IGD Rs.Meuraxa. Dalam upaya konservasi energi pemerintah melalui Badan Standarisasi Nasional Indonesia yang dimuat dalam SNI 03-6389-2011 menentukan batasan nilai perpindahan termal menyeluruh pada dinding luar atau disebut dengan Overall Thermal Transfer Value (OTTV) maksimal 35 Watt/m2. Penelitian ini bertujuan menghasilkan acuan desain selubung dan mendapatkan faktor penyebab yang mempengaruhi besaran nilai OTTV dari hasil melakukan simulasi perhitungan terhadap semua variabelnya. Perhitungan OTTV pada IGD RS.Meuraxa terdiri 3 komponen nilai yaitu: nilai konduksi dinding, radiasi matahari dan konduksi kaca terhadap empat orientasi fasad bangunan dengan perolehan hasil total nilai OTTV 51,47 Watt/m2. Untuk menurunkan nilai dilakukan beberapa variasi simulasi modifikasi dengan menginput semua data nilai koefisien material yang dimungkinakan untuk diaplikasikan dalam desain. Simulasi terdiri dari modifikasi Uf (kaca ganda), Uw (Isolasi Dinding Luar), WWR (Rasio perbandingan kaca), a (warna cat), SC (alat peneduh dan spec.kaca). Hasil simulasi dimasukkan dalam tabel dan grafik trendline linear sehingga didapatkan nilai slope /kemiringan untuk dianalisis tingkat pengaruh/ signifikan terhadap nilai OTTV. Hasil penelitian diperoleh bahwa modifikasi SC (kaca dan effectif) yaitu pemasangan alat peneduh dan modifikasi spesifikasi kaca sangat mempengaruhi penurunan nilai OTTV dalam upaya konservasi energi dengan tetap mengedepankan konsep arsitektur tropis yang bertemakan tradisional Aceh.
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Kusumawati, Lili, Erni Setyowati, and Agus Budi Purnomo. "Practical-Empirical Modeling on Envelope Design towards Sustainability in Tropical Architecture." Sustainability 13, no. 5 (2021): 2959. http://dx.doi.org/10.3390/su13052959.
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The building envelope’s overall thermal transfer value (OTTV) is an essential aspect of creating sustainable and energy-saving architecture. The original OTTV formula makes it difficult for any user who is not an expert to calculate OTTV. Designers usually need an empirical formula to determine the design direction in the initial design stage. Instead of replacing the previous SNI (The Indonesian National Standard) 6389:2011, this paper will introduce several simple equations as empirical formulas covering solar factor (SF), effective shading coefficient (SCeff), and OTTV. Three hundred architraves units of facade models were investigated to make the formulas or equations. Regression analysis was used to make three practical formulas in this paper. The research validation consists of first and crossed-validation to determine the Root Mean Square Error (RMSE) and Average Percentage of Error (APE) between the rule of thumb and original equation of OTTV from the Indonesian standard. The results show that the RMSE is only 1.12 W/m2, while the APE is 1.05%. By these results, the empirical formulas can be implemented to be the rules of thumb in the first stage of the design process because the values of RMSE and APE are still under the design margin of thermal design in the building.
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Kurniawan, Rizky. "Optimalisasi Perubahan Desain Fasad Gedung Rumah Sakit terhadap Penurunan Nilai Ottv dengan Metode Rekayasa Nilai." Syntax Literate ; Jurnal Ilmiah Indonesia 8, no. 12 (2023): 6897–912. http://dx.doi.org/10.36418/syntax-literate.v8i12.14312.
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Sustainable construction is a way for the construction industry to achieve sustainable development by considering social, economic, environmental and cultural issues. Generally, in every commercial building, the equipment that uses the largest amount of energy is air conditioning equipment, including hospital buildings, which is influenced by the surface design concept of the building facade, so this research was created to optimize green building-based building facade design through heat transfer values on the building wall facade or Overall Thermal Transfer Value (OTTV) which refers to SNI 6389:2011 concerning Energy Conservation of Building Envelopes using value engineering methods. The results show that the use of 310 Wp Solar Panels, blue green Stopsol Glass, Aluminum Composite Panels (ACP), Acian Plaster Walls, Wheatershield Paint has an increase in initial costs of 31.23% from existing conditions, but is superior in reducing heat with the highest OTTV value low at 34.16 Wh/m2 and provides the most optimal savings in electricity usage costs of 30.5%.
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Vijayalaxmi, J. "Concept of Overall Thermal Transfer Value (OTTV) in Design of Building Envelope to Achieve Energy Efficiency." International Journal of Thermal and Environmental Engineering 1, no. 2 (2010): 75–80. http://dx.doi.org/10.5383/ijtee.01.02.003.
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Enggarsiwi, Astri Resmi, Sri Yuliani, and Yosafat Winarto. "Thermal Performance of Tall Building Envelope Design in Tropical Urban Region." IOP Conference Series: Earth and Environmental Science 1361, no. 1 (2024): 012018. http://dx.doi.org/10.1088/1755-1315/1361/1/012018.
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Abstract The construction sector contributes to producing carbon gas emissions of more than 40%, using materials from nature that are quite large, donating waste, and reducing areas for water catchment and green areas. This research focuses on what needs to be considered in the design of energy-efficient buildings is the variable building envelope. Building envelope design is critical in promoting sustainable and energy-efficient tall buildings. Envelope design consists of characteristics and configuration of building materials, that contribute to thermal performance. The performance of a building’s envelope is significant, as it impacts the overall energy consumption of the building. The research aims to verify and investigate the performance of envelopes in tall buildings in the tropical urban region. The research uses a model simulation method that can analytically-quantitatively calculate the energy value of buildings, with a case study at UNS Tower in Surakarta. The UNS Tower building is used as a simulation model to calculate its thermal performance by comparing it with the base case building in the EDGE web application and Overall Thermal Transfer Value (OTTV) calculation. The result shows that thermal performance of UNS Tower does not meet the OTTV standard of 35 W/m2 according to the Indonesian National Standard (SNI) 6389:2020 for energy conservation in building envelopes. The total OTTV of UNS Tower is 35.17 W/m2, with the highest OTTV contribution coming from the parts of the building envelope that utilize unshaded glass materials, specifically the Northwest façade with 47.61 W/m2 and the Southeast façade with 44.95 W/m2. Based on the simulation results using the EDGE web application, the base case shows that UNS Tower is not energy-efficient. The result shows that building envelope selection in the tall building can significantly improve overall energy efficiency. The research offer valuable insights also encourages building envelope design development in tall buildings to improve building energy efficiency.
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Imran, Mohammad. "Analisa Hemat Energi Terhadap Gedung GPIB Kelapa Gading Melalui Pendekatan OTTV." Jurnal Linears 2, no. 2 (2020): 79–91. http://dx.doi.org/10.26618/j-linears.v2i2.3127.
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OTTV (Overall Thermal Transfer Value) adalah suatu nilai yang ditetapkan sebagai kriteria perancangan untuk dinding dan kaca bagian luar bangunan Gedung yang dikondisikan meliputi tiga elemen dasar perpindahan panas yang terjadi pada selubung luar bangunan yaitu radiasi matahari melalui kaca, konduksi panas melalui dinding tak tembus cahaya dan konduksi panas melalui kaca. Lokasi penelitian adalah Gedung GPIB Kelapa Gading yang ada di Jalan Janur Asri Jakarta. Tujuan penelitian adalah untuk menganalisa hemat energi pada Bangunan GPIB Kelapa Gading dengan menggunakan pendekatan Nilai Perpindahan thermal menyeluruh atau OTTV untuk setiap bidang dinding luar bangunan dengan orientasi utara, orientasi selatan, orientasi barat dan orientasi timur. Hasil penelitian menunjukkan bahwa bangunan GPIB Kelapa Gading memiliki banyak jendela yang besar namun tidak memiliki fenetrasi sinar matahari, keseluruhan selubung bangunan jauh di atas 45 watt/m2. Untuk itu Bangunan GPIB Kelapa Gading perlu dikontrol ulang terhadap desain dan kenyamanan bangunannya.
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Syarifudin, Syarifudin, and Andrial Imran. "An Analysis of Energy Consumption In The Goverment Buildings’ In Indonesian Border." Jurnal Indonesia Sosial Teknologi 5, no. 3 (2024): 930–38. http://dx.doi.org/10.59141/jist.v5i3.943.
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In this research, energy consumption analysis was conducted at the Main building regent’s office of nunukan. The analysis was conducted on the main variables of energy efficiency, namely: measurement of temperature and relative humidity, calculation of Overall Thermal Transfer Value (OTTV) and Roof Thermal Transfer Value (RTTV), calculation of Energy Consumption Intensity (IKE) in air-conditioned and non-air-conditioned rooms as well as an analysis of opportunities to increase the efficiency of energy consumption in the buildings.. Based on the calculation and result of IKE in both buildings, they are still considered in the category of EFFICIENT. However, based on the measurement of temperature and relative humidity, it shows that in both buildings air conditioning is still necessary to achieve the level of thermal comfort, therefore an increase of efficiency in the load is needed to avoid wastage.
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Viriezky, Viata, Ova Candra Dewi, and Amardeep M. Dugar. "Lighting Energy Reduction by Optimizing Daylight while Maintaining Cooling Load in Tropical Educational Building, Depok, Indonesia." Journal of Sustainable Architecture and Civil Engineering 32, no. 1 (2023): 145–61. http://dx.doi.org/10.5755/j01.sace.32.1.32267.
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This study aims to reduce the lighting energy consumption in educational buildings while avoiding an increase in cooling load. The Faculty of Engineering building in Universitas Indonesia, Depok, West Java, Indonesia is used as a case study. Daylight optimization can have an impact on lighting energy, which is the largest energy consumer in educational buildings. However, given Indonesia’s tropical climate, daylight leading to heat gain is a concern. Current passive design interventions for controlling daylight and heat gain include light shelves, clerestories, and glazing materials. Daylighting performance is simulated using DIALux software. Results of each intervention are analyzed quantitatively and qualitatively by theories and parameters, namely illuminance level, light uniformity, and overall thermal transfer value (OTTV). Light shelves result in increased uniformity and lower OTTV. Clerestories result in increased average illuminance but higher OTTV. Active intervention with a dimming and grouping system is applied after daylight increases. The combination of passive design interventions and active dimming of electric lights reduces lighting energy with the same OTTV as existing. This study recommends the use of passive and active daylighting strategies considering their effect on the cooling load of buildings.
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Kurniawan, Tri B., Deshinta A. Dewi, Fathoni Usman, and Fadly Fadly. "Towards Energy Analysis and Efficiency for Sustainable Buildings." Emerging Science Journal 7, no. 6 (2023): 2226–38. http://dx.doi.org/10.28991/esj-2023-07-06-022.
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Energy analysis that leads to energy efficiency becomes one of the most important factors in the building design process, especially considering the current energy crisis and the effects of global warming. Building designers greatly benefited from the review and analysis to optimize energy usage for the building in the design stage. While the current design approach is mostly done manually, this paper presents the automated version using the developed BIM plugin. It eases the designer’s choice of alternative plans that yield an effectively designed building. The development of energy analysis in the application aims to promote energy efficiency by calculating the energy consumption estimation based on energy codes MS2680 and MS1525. This application is improved by a simulation that uses the Building Information Modeling (BIM) platform and extracts the necessary parameters from the BIM model with the aid of the created plugins. This study measured energy consumption and efficiency using the two primary parameters of Overall Thermal Transfer Value (OTTV) and Roof Thermal Transfer Value (RTTV). According to the results, OTTV reaches 42.72% and RTTV reaches 8.02%, both of which respectively meet Malaysian Energy Code limits of less than 50% and 25%. Doi: 10.28991/ESJ-2023-07-06-022 Full Text: PDF
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Lim, Yaik-Wah, Taki Eddine Seghier, Muhamad Farhin Harun, Mohd Hamdan Ahmad, Azurah A. Samah, and Hairudin Abdul Majid. "Computational BIM for Building Envelope Sustainability Optimization." MATEC Web of Conferences 278 (2019): 04001. http://dx.doi.org/10.1051/matecconf/201927804001.
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Building envelope plays an important role to protect a building from external climatic factors while providing a comfortable indoor environment. However, the choices of construction materials, opening sizes, and glazing types for optimized sustainability performance require discrete analyses and decision-making processes. Thereby this study explores the use of computational building information modelling (BIM) to automate the process of design decision-making for building envelope sustainability optimization. A BIM tool (Revit), a visual programming tool (Dynamo) and multi objective optimization algorithm were integrated to create a computational BIM-based optimization model for building envelope overall thermal transfer value (OTTV) and construction cost. The proposed model was validated through a test case; the results showed that the optimized design achieved 44.78% reduction in OTTV but 19.64% increment in construction cost compared to the original design. The newly developed computational BIM optimization model can improve the level of automation in design process for sustainability.
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Safitra, Arrad Ghani, and Mochammad Denis Arifin Pratama Putra. "KONSERVASI ENERGI SEKTOR BANGUNAN RUMAH SAKIT CEMPAKA PUTIH PERMATA SURABAYA." Jurnal Technopreneur (JTech) 8, no. 2 (2020): 97–102. http://dx.doi.org/10.30869/jtech.v8i2.617.
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Konservasi energi didefinisikan sebagai penggunaan energi dan sumber daya energi secara efisien dan rasional tanpa mengurangi penggunaan energi yang memang benar-benar diperlukan. Konservasi dilakukan pada salah satu rumah sakit di Surabaya yaitu Rumah Sakit Cempaka Putih, Kebon Agung, Surabaya. Konservasi energi difokuskan pada sistem pengkondisian udara dengan metode menghitung Cooling Load Temperature Difference (CLTD) dan Overall Thermal Transfer Value (OTTV) untuk mengetahui peluang penghematan energi. OTTV memiliki standar nilai yaitu ≤ 45 Watt/m2 yang ditentukan oleh SNI 03-6389-2000 sedangkan perhitungan beban pendinginan akan dibandingkan dengan kapasitas AC yang terpasang. Pengambilan data dilakukan menggunakan environment meter, digital distance meter, dan tang ampere untuk memperoleh data temperatur, kelembaban, dan dimensi setiap ruangan. Hasil perhitungan beban pendinginan dengan asumsi okupansi setiap ruangan maksimum maka gedung Rumah Sakit Cemapaka Putih Permata termasuk tidak terjadi pemborosan ketika dibandingkan dengan kapasitas AC yang terpasang namun dari sisi kenyamanan dapat dikatakan kurang memenuhi kebutuhan. Hasil perhitungan OTTV gedung RSIA Cempaka Putih Permata sebesar 31,47 Watt/m2 termasuk bangunan hemat energi. Solusi yang dapat diterapkan berdasarkan analisa tersebut adalah menambah jumlah AC agar memenuhi tingkat pengkondisian udara ruangan dan selanjutnya diikuti dengan retrofit fluida refrigeran dengan hidrokarbon guna untuk menurunkan konsumsi daya listrik sebesar 20%
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Chiradeja, Pathomthat, Surakit Thongsuk, Santipont Ananwattanaporn, Atthapol Ngaopitakkul, and Suntiti Yoomak. "A Study on Transparent Type Envelope Material in Terms of Overall Thermal Transfer, Energy, and Economy for an Office Building Based on the Thai Building Energy Code." Sustainability 15, no. 13 (2023): 10435. http://dx.doi.org/10.3390/su151310435.
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Energy consumption in buildings has increased significantly as population and economic activities are concentrated in urban areas. Air conditioning accounts for a significant percentage of energy consumption in buildings, especially in tropical climates. The main area where heat can be transferred into the building is through glass windows. Thus, this study aims to evaluate feasibility in terms of overall thermal transfer value (OTTV), energy, and economics for retrofitting different glass materials in an office building in Thailand by using building energy code (BEC) software. The software uses Thailand’s building energy code as the standard to evaluate the energy performance of the case study building in comparison with different glass types used in retrofitted cases. From an economic perspective, the internal rate of return (IRR) and discounted payback periods (DPP) were used as determining indexes. The results demonstrated that retrofitted windows with the best energy-efficient glass might achieve energy performance, but installation cost can reduce economic feasibility, while the glass with the second lowest heat transfer coefficient can reduce the OTTV by 68.89% and building energy consumption by 16.87%. However, it can achieve the highest economic performance with 10.70% IRR and DPP at 11.83 years. Therefore, the balance between energy and economic factors must be considered to provide energy-efficient and investment-friendly glass materials for retrofit projects. In addition, the study focuses specifically on tropical climates. Thus, the finding may not be reflected similarly for buildings located in different regions.
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Pinich, Sarin, Kantaphong Srimuang, and Atch Sreshthaputra. "Optimization of Envelope Heat Gain and Interior Daylight Illuminance in Building Facade Design Under Reflectance Limitations: A Case Study of Office Buildings in Thailand." Nakhara : Journal of Environmental Design and Planning 22, no. 3 (2023): 317. http://dx.doi.org/10.54028/nj202322317.
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The popularity of using glass as the main building envelope material in commercial high-rise buildings has brought about numerous legal actions in recent years due to the widespread impact of the visible light reflectance of glass facades on the surrounding area. However, choosing suitable reflectance values for glazing the building facade remains a viable solution to lessen envelope heat gain and reduce cooling energy demand. Despite this, maximizing daylight is essential to maintaining healthy vision and the circadian rhythm of the building users. As a result, finding the optimal solution for envelope glass property selection to provide minimum heat gain through the building facade and maximum indoor daylight became a great challenge. The experimental research is conducted to identify the relationship between overall thermal transfer value (OTTV) and useful daylight illuminance (UDI) and to find suitable enveloped glass performance properties. Two typical high-rise office buildings in Thailand with a square-shaped and a rectangular-shaped floor plan are selected as case studies. BEC, a web-based program developed by Thailand’s Department of Energy Development and Efficiency, and Rhinoceros 6, along with Grasshopper, Ladybug, and Honeybee plugins, are used to calculate the OTTVs and transmitted visible light within the building, respectively. The results show that the maximum proportion of the building area that passes UDI requirements while in accordance with OTTV criteria is 23% and 26% in the square-shaped plan and the rectangular-shaped plan, respectively. These cases are with the WWR 80 and with glass performance values of SHGC 0.2, VLT 31%, and U-value 1.62 W/m2K.