Singgih Dwi Prasetyo, Royb Fatkhur Rizal, Misbahul Munir, Yuki Trisnoaji, Catur Harsito, Zainal Arifin
– This study presents a numerical analysis using Computational Fluid Dynamics (CFD) to evaluate the thermal performance of various Phase Change Material (PCM) container geometries integrated into the Photovoltaic-Thermal (PVT) system. Triangle, quadrilateral, and pentagon PCM container forms were studied under the same conditions, with paraffin as the PCM material. Transient thermal simulations assessed the temperature distribution and phase-change dynamics at 100, 500, and 1000 time intervals. The results showed that the triangular geometry provided the best thermal performance, achieving a maximum PCM temperature of 41.15 °C and a thermal efficiency of 7.84%. In contrast, the five-sided shape performed worst due to uneven heat distribution. ANOVA analysis confirmed that container geometry significantly affected thermal efficiency (p = 0.0013), while the time factor did not have a substantial effect. The trend of electrical efficiency is different and more favorable to geometry with a larger surface area, such as a pentagon. This study emphasizes the importance of PCM container geometry in improving the overall efficiency of PVT systems and as a basis for developing more thermally optimized solar energy storage systems. Copyright © 2025 Praise Worthy Prize S.r.l.-All rights reserved. © 2025 Praise Worthy Prize S.r.l.-All rights reserved.
Power Plant Engineering Technology, Faculty of Vocational Studies, State University of Malang, Malang, 65145, Indonesia; Department of Mechanical Engineering, Universitas Sebelas Maret, Surakarta, 57126, Indonesia; Department of Mechanical Engineering, Faculty of Vocational, Universitas Sebelas Maret, Surakarta, 57126, Indonesia; Department of Mechanical Computer Industrial and Management Engineering, Kangwoon National University, Gangwon, 25913, South Korea
