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Suspended particle device windows in residential buildings: Measurement-based assessment of comfort and energy performance for optimal control during intermediate and heating seasons
Energy and Buildings ( IF 6.6 ) Pub Date : 2025-01-18 , DOI: 10.1016/j.enbuild.2025.115339
Soo-Jin Lee, Sue-Young Choi, Seung-Yeong Song

Smart windows effectively reduce cooling loads by controlling the visible light transmittance (VT) and solar heat gain coefficient (SHGC), and several previous studies have focused primarily on the analysis of comfort and cooling energy performance attributable to smart windows during the summer. However, understanding the annual effects of changes in the VT and SHGC of smart windows on indoor visual and thermal environments is crucial since windows impact the comfort and energy performance of buildings throughout the year. Therefore, this study comprehensively evaluates the performance of suspended particle device (SPD) smart windows during intermediate and heating seasons because insufficient research has been conducted. The experimental residential building is located in Sejong city, Republic of Korea (36.5°N latitude, 127.3°E longitude) and is characterized by a temperate climate zone. Measurements from September to December 2023 assessed glare, indoor daylight illuminance, thermal comfort, and heating and lighting energy under various sky conditions and smart window control methods. Considering the results of the measurements comprehensively, this study recommends the following operational strategies: during intermediate periods, an “always transparent state” should be employed on cloudy days, and “automatic control” based on the indoor illuminance levels should be employed on clear days. During heating periods, an “always transparent state” should be adopted on cloudy days, and “automatic control” should be adopted on the basis of glare occurrence on clear days.

中文翻译:


住宅建筑中的悬浮颗粒装置窗户:基于测量的舒适度和能源性能评估,以便在中期和供暖季节进行最佳控制



智能窗户通过控制可见光透射率 (VT) 和太阳热增益系数 (SHGC) 有效降低制冷负荷,之前的几项研究主要集中在分析智能窗户在夏季的舒适度和冷却能源性能。然而,了解智能窗户的 VT 和 SHGC 变化对室内视觉和热环境的年度影响至关重要,因为窗户全年都会影响建筑物的舒适度和能源性能。因此,由于研究不足,本研究全面评估了悬浮粒子装置 (SPD) 智能窗在中间和供暖季节的性能。实验性住宅楼位于韩国世宗市(北纬 36.5°,东经 127.3°),气候温带。2023 年 9 月至 12 月的测量评估了各种天空条件和智能窗户控制方法下的眩光、室内日光照度、热舒适度以及供暖和照明能源。综合考虑测量结果,本研究推荐了以下操作策略:在中间时段,阴天应采用“始终透明状态”,晴天应采用基于室内照度水平的“自动控制”。在供暖期间,阴天应采用“始终透明状态”,晴天应根据眩光的发生采取“自动控制”。
更新日期:2025-01-18
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