Validation of dynamic RADIANCE-based daylight simulations for a test office with external blinds
Validation of dynamic RADIANCE-based daylight simulations for a test office with external blinds
复制标题
DOI：
10.1016/s0378-7788(01)00058-5
复制
发表时间：
2001-09
影响因子：
6.7
通讯作者：
C. Reinhart;O. Walkenhorst
中科院分区：
文献类型：
--
作者：
C. Reinhart;O. Walkenhorst
该研究包括验证基于 RADIANCE 的动态日光模拟方法 DAYSIM，该方法使用日光系数的概念和 Perez 天空模型来预测室内照度的短时间步长发展。在配备双层玻璃和外部百叶窗的全尺寸测试办公室中，对 10,097 种天空条件下的测量照度和模拟照度进行了比较。与传统的日光模拟相比，解决了设计人员额外的规划工作。研究发现，直射阳光的处理强烈影响日光系数法的准确性。研究了直射阳光的三种不同模拟模式。仿真结果证明，对于任意天空条件下的各种百叶窗设置，可以以相当的精度对室内照度进行建模。日光自主预测的准确度低于 2%，其中模拟误差大致相等地来自于光线追踪和天空模型。
The study encompasses the validation of the dynamic, RADIANCE-based daylight simulation method DAYSIM, which uses the concept of daylight coefficients and the Perez sky model to predict the short-time-step development of indoor illuminances. Measured and simulated illuminances have been compared under 10,097 sky conditions in a full-scale test office with a double glazing and external venetian blinds. The additional planning effort for the designer compared to a conventional daylight simulation is addressed. It has been found that the treatment of direct sunlight strongly influences the accuracy of the daylight coefficient method. Three different simulation modes for the direct sunlight are investigated. The simulation results prove that indoor illuminances can be modeled with comparable accuracy for various blind settings under arbitrary sky conditions. Daylight autonomies are predicted with an accuracy below 2% points, where simulation errors stem with roughly equal parts from the raytracing and the sky model.