Gershey E L, Reiman J, Wood W, Party E
Rockefeller University, New York City 10021, USA.
Infect Control Hosp Epidemiol. 1998 Oct;19(10):760-6. doi: 10.1086/647720.
To develop a method to evaluate directional airflow patterns, air dilution, and air mixing in facilities where tuberculosis patients are seen.
A tuberculosis patient isolation room was evaluated by analyzing pressure differential between the room and the corridor and by using theatrical fog to visualize room air movement and impact of dilution and exchange, as well as air capture and displacement. Tracer gas was compared to fog results and used to calculate air exchange rates.
A small research hospital.
By adding theatrical fog to the patient room at several locations, we quickly learned that most of the air entering the room through the transom and around the door to the corridor was exhausted through the three exhaust vents. Little air appeared to move toward the exhaust fan. For comparison and to confirm the room air exchange rate, tracer gas was distributed and sampled. The kinetics of decay were very similar whether the tracer gas and room air were mixed during sampling or not.
The fog procedure allowed good visual confirmation of air mixing and airflow patterns and provided quantitative data for evaluating the efficacy of air capture and displacement or dilution and exchange.
开发一种方法，用于评估诊治结核病患者的场所中的定向气流模式、空气稀释和空气混合情况。
通过分析病房与走廊之间的压差，并使用舞台烟雾来可视化病房内的空气流动以及稀释和交换的影响，以及空气捕获和置换情况，对一间结核病患者隔离病房进行评估。将示踪气体的结果与烟雾结果进行比较，并用于计算空气交换率。
一家小型研究医院。
通过在病房的多个位置添加舞台烟雾，我们很快了解到，通过气窗和通往走廊的门周围进入病房的大部分空气是通过三个排气口排出的。几乎没有空气流向排气扇。为了进行比较并确认病房的空气交换率，分布并采样了示踪气体。无论采样期间示踪气体与室内空气是否混合，其衰减动力学都非常相似。
烟雾程序能够很好地直观确认空气混合和气流模式，并为评估空气捕获和置换或稀释和交换的效果提供定量数据。
