BSL-3实验室不同通风方式下气溶胶颗粒分布的数值研究  

Comparison of Indoor Aerosol Particle Distribution in Different Ventilated BSL-3 Laboratories by Numerical Method

作　　者：耿文清[1] 马宗虎[1] 尚红[1] 张小京[2] 

机构地区：[1]中国医科大学附属第一医院,沈阳110011 [2]北京克力爱尔生物实验室工程公司

出　　处：《医疗卫生装备》2010年第2期24-27,38,共5页Chinese Medical Equipment Journal

基　　金：国家公益性行业科研专项项目(200802021)

摘　　要：目的:对BSL-3主实验室上送上排、上送下排2种通风方式的气流运动以及气溶胶颗粒浓度分布与排除进行数值研究。方法:利用离散轨道模型模拟气溶胶颗粒的轨迹,并与模拟气流运动的标准k-ε湍流模型相耦合。结果:在主实验室送风量及压力不变的情况下,通风方式是影响气溶胶颗粒分布的关键因素。结论:上送上排案例方案对比上送下排案例方案有更多的颗粒逃逸、更少的颗粒悬浮与沉积以及更好的室内排污效率,上送下排案例方案对比上送上排案例方案在呼吸区以及整个室内有更小的颗粒平均浓度。Objective To study the air movement and aerosol particle concentration and distribution of the two ventilation modes in BSL-3 Laboratories. Methods The discrete trajectory model was adopted to simulate particle tracks while the standard two-equation model for solving the continuous air flow was combined. Reml]~ Under the condition that the air supply volume in the main room of BSL-3 laboratory was ensured invariable, different ventilation types were critical factors to affect air distribution. Conehmion The up-supply ＆ up-discharge case has a larger escaped particle mass and a lower particle suspension ＆ deposition as well as better ventilation efficiency than the up-supply ＆ down-discharge one, while the latter was gifted with an average particle concentration in the breathing zone and the laboratory than the former one. [Chinese Medical Equipment Journal, 2010,31 （2） ： 24-27,38]

关 键 词：BSL-3实验室 通风 颗粒 气溶胶 数值模拟 

分 类 号：R122[医药卫生—环境卫生学]