Article Per Year (5 Year)
p-Index From 2021 - 2026
0.61
P-Index
This Author published in this journals
All Journal AL-ULUM: JURNAL SAINS DAN TEKNOLOGI JURNAL PENDIDIKAN DAN ILMU FISIKA
Jonathan Saputra
Politeknik Negeri Jakarta, Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Education Energy Physics

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
ANALYSIS OF THERMAL TRANSFER VALUES IN TEACHING CLASSROOMS Tri Wulan Sari; Dyah Nurwidyaningrum; Jonathan Saputra; Denny Yatmadi; Sujito Sujito
AL ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 10, No 2 (2024)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jst.v10i2.15679

Abstract

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. 
ANALYSIS OF THERMAL TRANSFER VALUES IN TEACHING CLASSROOMS Tri Wulan Sari; Dyah Nurwidyaningrum; Jonathan Saputra; Denny Yatmadi; Sujito Sujito
AL ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 10, No 2 (2024)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jst.v10i2.15679

Abstract

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. 
Pengaruh Radiasi Panas Area Bukaan terhadap Kenyamanan Termal pada Gedung Sekolah X Tri Wulan Sari; Muhammad Daffa Rafliansyah; Dyah Nurwidyaningrum; Qori Febrianti; Sujito Sujito; Jonathan Saputra
Jurnal Pendidikan dan Ilmu Fisika Vol 5 No 2 (2025): Desember 2025
Publisher : Universitas Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52434/jpif.v5i2.42533

Abstract

Thermal comfort is one of the key factors in supporting the teaching and learning process in classrooms, especially in tropical regions like Indonesia, which experience high solar radiation intensity. This study aims to analyze the effect of heat radiation from opening areas on thermal comfort in School Building X. The method involved measuring the dimensions of the building's openings and facades to calculate the Window to Wall Ratio (WWR), as well as determining the Solar Factor (SF) and Shading Coefficient (SC) based on SNI 03-6389-2020. The heat radiation value (Qf”) was calculated for the east and west orientations, which receive the most direct sunlight exposure. The results showed that the highest radiation occurred on the west side at 18.91 W/m² and the east side at 16.42 W/m². Meanwhile, the north and south sides had no Qf” value due to the absence of window openings (WWR = 0). The increase in indoor temperature caused by radiation through openings has a direct impact on the thermal comfort of students, teachers, and university students using the classrooms. Therefore, passive design strategies such as shading and the use of low-E glass are highly recommended to reduce heat load and create a comfortable learning environment.
Co-Authors Denny Yatmadi DYAH NURWIDYANINGRUM Joumil Aidil Saifuddin Muhammad Daffa Rafliansyah Qori Febrianti Sujito Sujito Tri Wulan Sari Tri Wulan Sari