Comparative control strategies for roller shades with respect to daylighting and energy performance
Comparative control strategies for roller shades with respect to daylighting and energy performance
复制标题
卷帘在采光和能源性能方面的比较控制策略
DOI：
10.1016/j.buildenv.2013.05.016
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发表时间：
2013
影响因子：
7.4
通讯作者：
Hui Shen
中科院分区：
文献类型：
--
作者：
Athanasios Tzempelikos;Hui Shen
传统上，自动遮阳操作包括开闭策略，试图在控制眩光和太阳能增益的同时保持舒适的环境。本文采用全年瞬态综合热照明模拟方法，研究了四种不同的动态遮阳控制策略（恒定和可变设定值）对室外景观、采光指标、热负荷和能耗以及对私人办公室中可能导致视觉不适的过度照度的影响。研究结果表明：（1）遮阳板在工作时间内的打开时间取决于朝向和天气条件;（2）根据太阳辐射控制遮阳板的方法可能不是一种有效的方法;相反，照度阈值可能更合适（iii）第三种控制策略导致降低的源能量消耗和最大化的日光利用;然而，需要仔细考虑内部照度以避免眩光的风险;（iv）控制策略之间的年源能源消耗差异范围为10.1%至34.4%，取决于玻璃和遮光性能;以及（v）应在不同方向使用不同策略。具有代表性的情况下，与全尺寸的实验结果的验证。需要通过照明能源使用、太阳能和内部热增益之间的相互作用来研究采光效益和热要求之间的相互作用和整合，同时考虑根据所使用的遮阳控制策略而变化的舒适性参数。
Traditionally, automated shading operation includes open-closed strategies trying to maintain a comfortable environment while controlling glare and solar gains. Four different dynamic shading control strategies with constant and variable set points were developed and studied in this paper using year-round transient integrated thermal and lighting simulation, to investigate their impact on outdoor view, daylighting metrics, thermal loads and energy consumption as well as on excessive illuminance that can cause visual discomfort in private offices. The strategies and generic and can be applied to any location, orientation and climate if appropriate set points are selected.The results showed that: (i) shades remain open for a significant portion of working hours depending on orientation and weather conditions (ii) controlling shades based on solar radiation as suggested in previous studies might not be an effective method; instead, illuminance thresholds are probably more appropriate (iii) the third control strategy leads to reduced source energy consumption and maximized daylight utilization; however, careful consideration of interior illuminances is needed to avoid the risk of glare; (iv) differences in annual source energy consumption between control strategies range from 10.1% to 34.4% depending on glazing and shading properties and (v) different strategies should be used in different orientations. Validation of results with full-scale experiments is presented for representative cases. The interactions and integration between daylighting benefits and thermal requirements need to be studied through the interplay between lighting energy use, solar and internal heat gains, while considering comfort parameters that vary depending on the shading control strategy used.