Hobson Brodie W, Gunay H Burak
Department of Civil and Environmental Engineering, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada.
Energy Build. 2022 Jul 1;266:112121. doi: 10.1016/j.enbuild.2022.112121. Epub 2022 Apr 20.
Partial occupancy of commercial offices has become the norm in the wake of the COVID-19 pandemic. Given this, occupant-centric control (OCC), which adapt building systems based on occupants' presence or preferences, offer an alternative to traditional control that assumes full occupancy. However, poor sequences of operation can degrade the benefits of OCC. This paper explores this interaction by examining energy data from two buildings - one with two control logic faults corrected and an occupancy-based ventilation OCC implemented in 2020, and one with traditional ventilation - from 2019 to 2020. Sequences that impacted implementation in the first building are discussed. Then, a calibrated energy model of the second building is developed to evaluate how occupancy-based ventilation alongside changes to the sequences of operation - namely supply air temperature (SAT) reset and economizer high limits - impacted energy use. The inclusion of OCC and improved sequences in the second building saved 30.6% and 9.6% of annual heating and cooling energy, respectively. Without an SAT reset, OCC saved 4.4% and 3.9% of heating and cooling, respectively, compared to 15.7% and 5.7% when an SAT was present. These results begin to characterize the relationship sequences of operation and OCC implementations have with one another in commercial offices.
在新冠疫情之后，商业写字楼部分占用已成为常态。鉴于此，以 occupant 为中心的控制（OCC），即根据 occupant 的在场情况或偏好来调整建筑系统，为假定全占用的传统控制提供了一种替代方案。然而，不佳的运行顺序会降低 OCC 的益处。本文通过检查两座建筑的能源数据来探究这种相互作用——一座建筑在 2020 年纠正了两个控制逻辑故障并实施了基于占用情况的通风 OCC，另一座建筑采用传统通风方式，时间跨度为 2019 年至 2020 年。讨论了影响第一座建筑实施的顺序。然后，开发了第二座建筑的校准能源模型，以评估基于占用情况的通风以及运行顺序的变化——即送风温度（SAT）重置和节能器高限——对能源使用的影响。在第二座建筑中纳入 OCC 和改进顺序分别节省了年度供暖和制冷能源的 30.6%和 9.6%。没有 SAT 重置时，与存在 SAT 时的 15.7%和 5.7%相比，OCC 分别节省了 4.4%和 3.9%的供暖和制冷能源。这些结果开始刻画商业写字楼中运行顺序与 OCC 实施之间的关系。 （注：原文中“occupant”未翻译，可能是特定术语，需根据实际背景确定准确含义。）
