Abstract
Generally, the Differential Pressure Control System has been used to prevent air contamination between adjacent rooms. But, as the system needs long time to change the airflow rate, so, the system sometimes can't keep the air flow direction between rooms when the disturbance happens such as open or shut the door of safety cabinet. Directly Airflow Control System can change airflow rate rapidly linking with the open rate of the door of safety cabinet. It can keep the air flow direction between rooms. This paper shows model experiment and the application to the actual building.
