| Title |
Annual Energy Production Analysis of a Wall-Mounted Air-Based PVT System through Empirical Experimentation |
| Authors |
전새봄(Jeon, Saebom) ; 오진환(Oh, Jinhwan) ; 남유진(Nam, Yujin) |
| DOI |
https://doi.org/10.5659/JAIK.2026.42.8.261 |
| Keywords |
Photovoltaic Thermal system; Faced Installation; Seasonal Energy Performance; SOC-Based Output Control; Zero Energy Building(ZEB) |
| Abstract |
This study presents a year-long experimental analysis of a wall-mounted air-based photovoltaic thermal (PVT) system installed on a vertical
wall (tilt 90°, azimuth 225°) in Gijang-gun, Busan, Korea. The wall-mounted air-based PVT system simultaneously generates electricity and
recovers thermal energy through forced air circulation. Real-time data were collected at 1-minute intervals from June 2024 to May 2025,
including solar irradiance, power and thermal output, module temperature, and ambient conditions. Seasonal analysis revealed that winter
produced 43.9% more total energy than summer, primarily due to improved thermal recovery under low ambient temperatures and stable
electrical efficiency. On a clear reference day (December 9), electrical output responded rapidly to solar irradiance, while thermal output
showed a delayed peak due to air thermal inertia. Additionally, power output limitations were observed when the battery’s state of charge
(SOC) reached 100%, triggering MPPT control restrictions. These findings highlight the importance of SOC-based control strategies and
battery capacity optimization. This study offers empirical insights into the seasonal behavior of PVT systems installed on building facades and
supports their application in urban zero-energy building (ZEB) designs. |