基于二氧化碳的需求控制通风（DCV）有潜力实现节能，同时提供可接受的室内空气质量（IAQ）。在被占用空间内，CO2浓度的空间分布可能不均匀；然而，关于传感器位置如何影响呼吸区CO2浓度传感性能的信息有限。本研究使用经实验验证的计算流体动力学（CFD）模型，探索基于CO2的DCV系统在考虑不同通风系统（排量与混合）、换气率和乘员条件的情况下的最佳传感器位置。结果表明，置换通风可使CO2垂直分层，而混合通风可使CO2分布更加均匀。 在混合通风系统中，位于房间回流排气口的二氧化碳传感器提供了符合标准要求的合理精度。在置换通风策略下，由于二氧化碳分层，排气二氧化碳传感器的误差超过了这些要求，而放置在呼吸高度的壁装传感器产生的误差小于排气传感器。结果还表明，放置在桌面上的CO2传感器的精度不稳定，主要由于乘员热羽流的影响而发生显著变化。引用:佛罗里达州奥兰多2020年冬季会议论文

CO2–based demand-controlled ventilation (DCV) has the potential to achieve energy saving while providing acceptable indoor air quality (IAQ). The spatial distribution of CO2 concentration could be non-uniform within an occupied space; however, limited information is available on how the sensor location affects the sensing performance of the breathing zone CO2 concentration. This study used experimentally validated Computational Fluid Dynamic (CFD) models to explore the optimal sensor position for the CO2–based DCV system considering varied ventilation system (displacement vs. mixing), air change rate, and occupant condition. The results show that the displacement ventilation causes vertical stratification of CO2, while mixing ventilation can achieve more uniform CO2 distribution. With mixing ventilation system, CO2 sensors located at the room return exhaust provide reasonable accuracies that meet the standard requirements. With displacement ventilation strategy, the errors of exhaust CO2 sensors exceed those requirements due to CO2 stratification and wall–mounted sensors placed at the breathing height yield smaller errors than the exhaust sensor. The results also indicate the accuracies of the CO2 sensors placed on the desk are unstable and vary significantly mainly due to impact of occupant thermal plume.