本文对在变风量（VAV）系统中保持最小室外进气率的常用气流测量和控制技术进行了理论误差分析。使用风速管阵列或电子通风控制系统提供的最佳气流平均分析结果表明。使用CO2浓度平衡计算室外空气流量也可以实现充分的系统控制，除非占用率较低或室外空气仅占输送的供气的一小部分。 此外，结果表明，在一般建筑运行条件下，使用温度平衡技术计算室外空气进气量是不够的。在无法测量外部空气流量的情况下，增压压力控制可以充分控制外部空气进气量。最后，在VAV系统中，使用固定的最小外部空气挡板位置或体积风扇跟踪控制策略都不足以维持最小通风速率。 单位:双引文:ASHRAE交易，第106卷，第。2

This paper provides a theoretical error analysis of common airflow measurement and control techniques to maintain minimum outside air intake rates in variable air volume (VAV) systems. The results of the error analysis indicate that control strategies using direct airflow measurement from either an averaging Pitot-tube array or an electronic thermal anemometry provided the best ventilation control. Calculation of the outside airflow rate using a CO2 concentration balance can also allow for adequate system control, except when occupancy is low or when the outside air represents a small fraction of the supply air delivered. In addition, the results show that the use of the temperature balance technique to calculate the outside air intake rate is not adequate under common building operating conditions. In the case when measurement of the outside airflow rates is not possible, plenum pressure control can provide adequate control of outside air intake rates. Finally, the use of a fixed minimum outside air damper position or a volumetric fan tracking control strategy both proved to be inadequate control techniques for maintaining minimum ventilation rates in VAV systems.Units: Dual