The pollutant control performance of exhaust hoods plays a crucial role in the indoor air quality and energy consumption of ventilation systems in industrial buildings. To better understand the impact of local ventilation on the industrial indoor environment, this paper presents a literature review of exhaust hood performance and its improvement technologies. To create an index for evaluating the performance of exhaust hoods, the capture velocity, capture efficiency, flow ratio of pollutant emissions and exhaust airflow and energy consumption are first introduced. A number of factors affecting exhaust hood performance are assessed such as hood type, hood opening size, exhaust rate, installation distance, pollution source emission and environmental disturbance. Compared to structural improvement methods, the use of active airflow is a more effective way to improve the exhaust hood performance. The most commonly used methods for determining the exhaust rate are the controlled speed method and the flow ratio method. The use of an exhaust hood with an appropriate exhaust rate and jet parameters (for an active air-assisted hood) can effectively improve the pollutant control performance and reduce the energy consumption that would be wasted on the redundant exhaust rate. With more information focused on exhaust hood performance, this work suggests more effective strategies for improving indoor air quality and reducing energy consumption in industrial buildings.

排烟罩的污染物控制性能对工业建筑室内空气质量和通风系统能耗起着至关重要的作用。为了更好地了解局部通风对工业室内环境的影响，本文对排风罩性能及其改进技术进行了文献综述。为了建立评价排烟罩性能的指标，首先引入了捕集速度、捕集效率、污染物排放流量与排风量的比值以及能耗。评估了影响排风罩性能的多种因素，如排风罩类型、排风罩开口尺寸、排风量、安装距离、污染源排放和环境干扰。与结构改进方法相比，采用主动气流是提高排烟罩性能的更有效方法。最常用的确定排气速率的方法是控制速度法和流量比法。使用具有适当排气量和射流参数的排气罩（对于主动空气辅助排气罩）可以有效提高污染物控制性能，并减少浪费在多余排气量上的能源消耗。随着更多关于排气罩性能的信息，这项工作提出了更有效的策略来改善工业建筑的室内空气质量和减少能源消耗。使用具有适当排气量和射流参数的排气罩（对于主动空气辅助排气罩）可以有效提高污染物控制性能，并减少浪费在多余排气量上的能源消耗。随着更多关于排气罩性能的信息，这项工作提出了更有效的策略来改善工业建筑的室内空气质量和减少能源消耗。使用具有适当排气量和射流参数的排气罩（对于主动空气辅助排气罩）可以有效提高污染物控制性能，并减少浪费在多余排气量上的能源消耗。随着更多关于排气罩性能的信息，这项工作提出了更有效的策略来改善工业建筑的室内空气质量和减少能源消耗。