Numerical Study on Effects of Door-Opening on Airflow Patterns and Dynamic Cross-Contamination in an ISO Class 5 Operating Room  

作　　者：董书芸 涂光备 曹荣光 于振峰 

机构地区：[1]School of Environmental Science and Engineering,Tianjin University [2]Beijing Building Construction Research Institute [3]Hong Kong Hua Yi Designing Consultants(Shenzhen) Co.,Ltd.

出　　处：《Transactions of Tianjin University》2009年第3期210-215,共6页天津大学学报（英文版）

摘　　要：The contamination diffusion to the operating room when the door is open was simulated with a computational fluid dynamic(CFD) method,to give the extent of the contamination diffusion.The influence of the door-opening procedure was ignored since the door of the operating room is normally a sliding one.The flow field in the case of the 16 s course of opening the door was simulated.The simulated and the experimental results demonstrate that the extent of the contamination diffusion is around 1.5 m when there is no temperature difference between indoor and outdoor,and there is hardly any contamination diffusion when the temperature difference is 1 ℃.It can be concluded that the positive pressure difference in the operating room lost its function in preventing the contamination when the door is open.That the temperature of corridor is lower than that of operating room contributes to contamination control.Keeping 1 ℃ temperature difference between corridor and operating room and increasing positive pressure and air flow are suggested.It is more secure to set up an anteroom if persons come in or out of the operation room at the course of surgery.The contamination diffusion to the operating room when the door is open was simulated with a computational fluid dynamic （CFD） method, to give the extent of the contamination diffusion. The influence of the door-opening procedure was ignored since the door of the operating room is normally a sliding one. The flow field in the case of the 16 s course of opening the door was simulated. The simulated and the experimental results demonstrate that the extent of the contamination diffusion is around 1.5 m when there is no temperature difference between indoor and outdoor, and there is hardly any contamination diffusion when the temperature difference is 1 ℃. It can be concluded that the positive pressure difference in the operating room lost its function in preventing the contamination when the door is open. That the temperature of corridor is lower than that of operating room contributes to contamination control. Keeping 1℃temperature difference between corridor and operating room and increasing positive pressure and air flow are suggested. It is more secure to set up an anteroom if persons come in or out of the operation room at the course of surgery.

关 键 词：contamination control computational fluid dynamic method operating room door-opening biological clean operating room 

分 类 号：R197.3[医药卫生—卫生事业管理]