Discussion on air supply velocity of the class Ⅰ clean operating room

The revised code adjusts the average air velocity and the measure section height for the velocity in working area in the classⅠclean operating rooms. Carries a theory research in order to obtain air supply velocity and air supply rate corresponding to average air velocity in working area. The results show that the air supply velocity should be up to 0.30 to 0.37 m/s and the air supply rate should be up to 6 800 to 8 400 m³/h for the classⅠclean operating rooms, whose storey height is three meters, in order to obtain the average air velocity of 0.20 to 0.25 m/s in the projection area of air supply face at 1.2 meters from the floor.