Office lighting installations often inefficiently expend energy illuminating space that is unoccupied and/or already receiving adequate daylight. Illuminance and occupancy sensors can enable substantial energy savings by deploying electric lighting only in proximity to occupants, and at levels required to supplement available daylight. Savings vary based on sensor granularity, daylight availability, façade geometry and occupancy. In the current study, an open-plan office is simulated for 1 year to estimate energy savings relative to a conventional configuration. Available daylight is modelled using DAYSIM and occupancy is stochastically modelled in accordance with a standard schedule. Forty-eight combinations of simulation parameters are compared. Savings exceed 60% with high-resolution control. Greater savings are observed where daylight is available and occupancy is low. Estimated savings decrease to less than 35% with coarser lighting zones. The proposed workflow can assess the energy savings of occupancy- and/or daylight-based controls for open-plan offices of any common configuration.

办公照明设备通常会低效率地消耗未被占用和/或已经接受足够日光的能源照明空间。照度和占用传感器可以通过仅在占用者附近并以补充可用日光所需的水平部署电照明来节省大量能源。根据传感器的粒度，日光可用性，立面的几何形状和占用情况，节省的费用会有所不同。在当前的研究中，模拟了一个开放式办公室1年，以估计与传统配置相比的节能量。使用DAYSIM对可用日光进行建模，并根据标准时间表对占用率进行随机建模。比较了四十八种模拟参数组合。高分辨率控制可节省超过60％的电量。在有日光且占用率低的地方，可以节省更多的钱。较粗的照明区域估计节省的费用不到35％。建议的工作流程可以评估任何常见配置的开放式办公室的基于占用和/或基于日光的控件的节能效果。