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All Journal Journal of Climate Change Society Indonesian Journal of Science and Education
Yulkifli
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Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Electrical & Electronics Engineering Environmental Science Materials Science & Nanotechnology Physics Social Sciences

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Increasing The Effectiveness Of 20 WP Solar Panel Power Absorption Using Three Angle Variations Based On The Effect Of Temperature Changes In Padang City Yulianis; Mairizwan; Yulkifli
Journal of Climate Change Society Vol. 1 No. 2 (2023)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jccs/Vol1-iss2/15

Abstract

In this paper, a system has been successfully designed to measure the effectiveness of solar panel power absorption with three variations in location and temperature changes in the city of Padang. The performance specifications for this system use three 20-watt solar panels with varying angles of 50°, 65°, and 75°. Use of the INA219 sensor, DS18B20 sensor, and BH1750 sensor, which measure power, temperature, and light intensity parameters. The system uses a Bluetooth serial terminal as a data logger and data storage device. The design specifications for sensor accuracy are 97.5% for current, 98.3% for voltage, 98.7% for temperature, and 99.7% for light intensity. Sensor accuracy is 99.905% for current, 99.996% for voltage, 99.838% for temperature, and 99.383% for light intensity. Based on these results, the smart garden tool design can work well. The results of the increase for three variations of angles at three locations in the city are: Power absorption at an angle of 50° at 3 different locations obtained power absorption of 3447.07 Watts (urban), 2566.3 Watts (hills), and 2461 Watts (beach). Power absorption at an angle of 65 ° at 3 different locations obtained power absorption of 2324.67 Watts (urban), 1679.35 Watts (hills), and 1779.03 Watts (beach). Power absorption at an angle of 75° at 3 different locations obtained power absorption of 2162.16 Watts (urban), 1687.85 Watts (hills), and 1799.58 Watts (beach). From the measurement results, it can be concluded that increasing the effectiveness of solar panel energy harvesting can be done in urban locations at an angle of 50°.
Systematic Literature Review Method for Identifying Efficiency and Photovoltaic Technology as a Renewable Energy Innovation Audia, Washilla; Yendri Sudiar, Nofi; Hamdi; Yulkifli; Nofriandi, Alwi
Journal of Climate Change Society Vol. 2 No. 1 (2024)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jccs/Vol2-iss1/24

Abstract

Photovoltaics or solar cells are a device that can convert/convert solar energy into electrical energy. The use of photovoltaics as a renewable energy innovation is very necessary in developing photovoltaic technology and increasing the efficiency of the energy produced. The main electricity supply is PLN, which is not always continuous in its distribution due to the limited availability of fossil energy. This can result in disruption of human activities and productivity. The technology developed is organic and inorganic photovoltaic technology. Photovoltaic efficiency refers to the ability of solar panels to convert sunlight energy into electrical energy. Currently it is not known how much technology has been developed by photovoltaics and the efficiency that photovoltaics have produced. This research aims to identify developments in photovoltaic efficiency research and technology used in the world whose data was obtained from related journals in 2013-2022. There are 1,503 studies related to photovotaic efficiency. The method used in this research is the Systematic Literature Review (SLR) Method. The SLR method is used to identify, review, evaluate, and interpret all available research on a topic area of ​​interest, with specific relevant research questions. By using the SLR method, a systematic review and identification of journals can be carried out, with each process following predetermined steps or protocols. The research results show that the technology that is widely used in developing photovoltaic efficiency is organic photovoltaic technology and the highest efficiency that has been obtained is 38.9%.
A Systematic Literature Review: Integration of Project-Based Learning, Entrepreneurship, and Ethnoscience in Science Education Dewi Juita; yulkifli; yerimadesi; Muhyiatul Fadhillah; festiyed; asrizal; Yusmaridi M
Indonesian Journal of Science and Education Vol. 10 No. 1 (2026): Indonesian Journal of Science and Education (In Press)
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v10i1.3241

Abstract

This study systematically reviews the integration of Project-Based Learning (PjBL), entrepreneurship, and ethnoscience in science education as a transformative 21st-century learning framework that connects scientific inquiry, cultural values, and entrepreneurial competencies. Although these concepts have been widely examined separately, studies that integrate all three remain limited. This study employed a Systematic Literature Review (SLR) approach guided by the PRISMA framework to ensure transparency and methodological rigor. Data were retrieved from the Scopus database, yielding 263 initial articles. After applying inclusion and exclusion criteria, 12 relevant articles published between 2022 and 2025 were selected for final analysis. The findings indicate that PjBL functions as a central pedagogical bridge connecting entrepreneurship and ethnoscience by promoting contextual, culture-based, and product-oriented science learning. The reviewed studies were dominated by quasi-experimental and Research and Development (R&D) designs. The most frequently targeted competency was entrepreneurship (44%), followed by critical thinking (17%) and cultural character (11%). Based on these findings, this study proposes an Ethnoscience-Based Project-Based Entrepreneurship Learning (PBEL) model to strengthen students’ creativity, collaboration, innovation, and cultural awareness. The proposed model offers a promising framework for advancing science education that is locally grounded, competence-oriented, and responsive to 21st-century learning demands.
Co-Authors Alwi Nofriandi Asrizal Audia, Washilla Dewi Juita Festiyed Hamdi Mairizwan Muhyiatul Fadhillah Yendri Sudiar, Nofi Yerimadesi Yulianis Yusmaridi M