Electrical and Electronic Engineering, Energy, Renewable Energy, Sustainability and the Environment
12
Scopus Publications
Scopus Publications
APPLICATION OF PERFORMANCE RATIO USING PVSYST SIMULATION IN THE PLANNING OF A HYBRID SYSTEM ROOFTOP SOLAR POWER PLANT IN CASE: BUILDING I, FACULTY OF ENGINEERING, SRIWIJAYA UNIVERSITY Armin Sofijan, Wirawan Adipradana, Kasmir Kasmir, Sudirman Yahya, Daeny Septi Yansuri, et al. Eureka Physics and Engineering, 2026 This study investigates the planning and performance evaluation of a hybrid rooftop solar power system for Building I, Faculty of Engineering, Sriwijaya University, using PVsyst simulation software. It addresses the challenges of increasing energy demands and reliance on fossil fuels, aligning with Indonesia's commitment to achieving a 23% renewable energy mix by 2025.The research involves designing and simulating a 39.6 kWp solar power system integrated with the State Electricity Company of Indonesia (PLN). The simulation results revealed an annual energy generation potential of 51,655 kWh and a performance ratio of 75%. These findings highlight the system's efficiency in converting solar energy into electricity, with losses attributed to environmental and technical factors, including solar irradiation variability, temperature, shading, and inverter efficiency.The system’s hybrid design, which combines battery storage with grid connectivity, ensures uninterrupted energy supply and enhances system reliability. This feature allows the system to mitigate fluctuations in solar energy availability while reducing dependence on grid electricity. The hybrid approach not only improves energy resilience but also supports sustainable energy solutions by integrating renewable energy sources effectively.The results are particularly applicable in institutional and urban settings where energy reliability and sustainability are critical. The system is well-suited for regions with high solar irradiation and infrastructure capable of supporting solar power technology. By providing cleaner, more sustainable energy, the hybrid system supports Indonesia’s renewable energy targets and contributes to global efforts to transition to greener energy systems
DEVELOPMENT OF PASSIVE COOLING WITH PERFORATED PLATES AND REAL-TIME MONITORING FOR PV EFFICIENCY IMPROVEMENT Armin Sofijan, Riman Sipahutar, Wirawan Adi Pradana, Baginda Oloan Siregar, Irwin Bizzy, et al. Eastern European Journal of Enterprise Technologies, 2025 This study focuses on enhancing photovoltaic (PV) module performance through the development of a passive cooling method using perforated aluminum plates, supported by a real-time monitoring system. The core problem addressed is the thermal inefficiency of PV modules operating in hot, humid environments, where heat accumulation lowers energy output. A real-time data acquisition system was developed using Arduino to monitor voltage, current, surface temperature, humidity, and solar irradiance. Four identical polycrystalline PV modules were tested; three were equipped with aluminum plates of varying perforation diameters (10 mm, 12.5 mm, 15 mm), while one remained uncooled as a control. The results showed that the module with 15 mm perforations had the best performance, achieving a 61.04 W output under peak irradiance (1404 W/m2) and reducing surface temperature by nearly 10°C. These outcomes demonstrate that enhanced natural convection and evaporative effects, enabled by the larger perforations, significantly improved thermal regulation. The synchronized monitoring system validated the temperature-power relationship by capturing environmental dynamics in real time. Due to its energy independence, low cost, and simplicity, this integrated solution is particularly applicable in tropical regions or off-grid installations. The findings establish a practical basis for scalable deployment of passive cooling in PV systems, especially where active cooling is unfeasible
Development of liquid smoke production process as a latex coagulant by utilizing a refrigeration machine Riman Sipahutar, Diah Kusuma Pratiwi, Irwin Bizzy, Armin Sofijan, Baiti Hidayati Iop Conference Series Materials Science and Engineering, 2020 This study aims to obtain a method of producing liquid smoke as a latex freezing material using a pyrolysis reactor equipped with a counter flow condenser with a cold water cooling medium. The raw materials as local wisdom studied were coconut shells and oil palm shells, abundant in South Sumatra. The condensation process uses a shell and tube type heat exchanger with counter flow. The raw materials were pyrolyzed with time variations of 180, 240 and 300 minutes. The production of liquid smoke with a pyrolysis duration of 300 minutes has the highest yield values of 36,66% and 29,74%, respectively, for the the raw materials of oil palm shell and coconut shell. The average amounts of tar separated from liquid smoke in a settling tank are 8.13% and 8.08%, respectively, for raw materials of oil palm shell and coconut shell.
The cooling effect of polycrystalline type PV panels using perforated aluminum plates I Bizzy, R Sipahutar, D Puspitasari, A Sofijan, M A Fajri Iop Conference Series Materials Science and Engineering, 2020 A study has been conducted to improve the efficiency of Polycrystalline type PV panels. This research was conducted at the Energy Technology Research Laboratory, Engineering Faculty, Sriwijaya University, South Sumatra, Indonesia. The disadvantage of PV panel, when receiving solar radiation, it will increase the temperature of the PV panel but decrease the efficiency. This study uses a perforated aluminum plate with hole diameter of 2.5 mm. The plate is placed behind the PV panel. The dimensions of the plate are 960 mm x 600 mm x 20 mm and the number of holes of 1457. The specifications of PV panels are 1020 mm x 670 mm x 30 mm, Polycrystalline type PV panels, maximum power of 100 WP. The results showed that the PV panels given a perforated aluminum plate cooling had higher efficiency than those not given perforated plate cooling.