本文介绍了一项日光模拟研究，以证明基于时间的信息在建筑性能分析中的重要性，并讨论如何将其用于建筑信息模型。在通过辐射度进行的日光模拟中，指定了一个带有单开门和可调节百叶窗的房间，并通过HDRI摄影技术在2小时内以5分钟的间隔对天空条件进行了实地采样。通过分析不同时间的天空条件、百叶窗的最佳位置和相应的室内照度水平，发现每小时的天气数据不足以进行日光控制研究。 然后提出了天空条件表示的可能替代方案。引用:ASHRAE/IBPSA-USA楼宇模拟形态，佐治亚州亚特兰大，2014年9月

This paper presents a daylight simulation study to demonstrate the importance of "time"-based information in building performance analysis and discuss how it can be used with building information model. In the daylight simulations by Radiance, a chamber with single opening and adjustable blinds was specified and the sky conditions were field-sampled in 5-minute interval over 2-hour duration by HDRI photography technique. By analyzing the sky conditions, the optimal positions of blinds and corresponding indoor illuminance level at different time, it was found that hourly weather data are not detailed enough for daylight control study. Possible alternatives for sky condition representation are then proposed.