Akademik Veri Yönetim Sistemi
Energy and Buildings, cilt.361, 2026 (SCI-Expanded, Scopus)
Despite the growing interest in phase change material (PCM)-integrated glazing systems for passive thermal regulation in buildings, limited studies have systematically examined the seasonal performance of such systems and the differences between passive and active discharging mechanisms under humid subtropical climates. Therefore, this study aims to investigate the thermal performance of PCM-integrated (paraffin wax RT-28HC) solar windows and evaluate the effectiveness of different discharging strategies through combined numerical and experimental analyses. Three different double-glazing window designs are analyzed, including a conventional double-glazing window, a solar passive PCM-based window with passive discharging, and a hybrid solar PCM-based window with water circulation for active discharging. The results demonstrate that solar passive windows with PCM integration can reduce internal room temperatures by up to 11.9 ℃, a 24.28% higher cooling compared to a standard double-glazing window of similar geometry and external conditions. Subsequently, the heat transfer rate from the window to the room is reduced by up to 41.3% in the solar passive window. Furthermore, the solidification process for the hybrid solar window with water circulation is completed within 69 min, compared to 96 min for the solar passive window, resulting in a faster cycle by 28.12%. The numerical model deviates from the experimental data by an average of 10%. Moreover, the seasonal analysis also indicates that solar passive windows are effective in storing a considerable amount of energy while also reducing indoor temperatures, thereby achieving significant energy savings in buildings.